阅读说明：本技术 一种电动车辆充电装置的故障反馈方法、装置及设备 (Fault feedback method, device and equipment for electric vehicle charging device ) 是由 王超 朱冲 于 2021-11-03 设计创作，主要内容包括：本文涉及电动车辆领域,尤其涉及一种电动车辆充电装置的故障反馈方法、装置及设备。其方法包括,获取电动车辆充电装置的充电装置信息；根据所述充电装置信息确定所述充电装置的故障信息；根据所述故障信息以及充电装置信息的原通信频率获取高于所述原通信频率的调整频率,其中,所述充电装置信息的原通信频率由电动车辆控制器设定；根据所述调整频率向所述电动车辆控制器发送所述充电装置信息,以使所述电动车辆控制器根据所述充电装置信息确定所述充电装置的故障。通过本文实施例,提高了充电装置信息的发送速度,以使电动车辆控制器根据充电装置信息快速确定并处理故障,降低充电的安全隐患。(The present disclosure relates to the field of electric vehicles, and more particularly, to a method, an apparatus, and a device for fault feedback of an electric vehicle charging apparatus. The method comprises the steps of acquiring charging device information of a charging device of the electric vehicle; determining fault information of the charging device according to the charging device information; acquiring an adjustment frequency higher than the original communication frequency according to the fault information and the original communication frequency of the charging device information, wherein the original communication frequency of the charging device information is set by an electric vehicle controller; and sending the charging device information to the electric vehicle controller according to the adjusting frequency so that the electric vehicle controller determines the fault of the charging device according to the charging device information. Through the embodiment, the sending speed of the charging device information is increased, so that the electric vehicle controller can quickly determine and process faults according to the charging device information, and potential safety hazards of charging are reduced.)

1. A fault feedback method of an electric vehicle charging apparatus, characterized in that the method comprises,

acquiring charging device information of a charging device of an electric vehicle;

determining fault information of the charging device according to the charging device information;

acquiring an adjustment frequency higher than the original communication frequency according to the fault information and the original communication frequency of the charging device information, wherein the original communication frequency of the charging device information is set by an electric vehicle controller;

and sending the charging device information to the electric vehicle controller according to the adjusting frequency so that the electric vehicle controller determines the fault of the charging device according to the charging device information.

2. The fault feedback method of an electric vehicle charging apparatus according to claim 1, wherein the fault information includes a fault type.

3. The method of claim 2, wherein obtaining an adjustment frequency higher than the original communication frequency according to the fault information and the original communication frequency of the charging device information further comprises searching frequency values corresponding to both the original communication frequency and the fault type in a preset frequency table, and taking the searched frequency values as the adjustment frequency.

4. The method of feeding back the fault of the electric vehicle charging device according to claim 3, wherein the charging device information includes a supply voltage and a switching state of the charging device.

5. The method of feeding back the failure of the electric vehicle charging device according to claim 4, wherein determining the failure information of the charging device based on the charging device information further comprises,

calculating the difference value between the power supply voltage and a preset value of the power supply voltage;

determining a fault type of the electric vehicle charging device according to the difference.

6. The method of feeding back the failure of the electric vehicle charging device according to claim 4, wherein determining the failure information of the charging device based on the charging device information further comprises,

and determining the fault type of the electric vehicle charging device according to the power supply voltage and the corresponding relation between the preset power supply voltage range and the fault type.

7. The fault feedback method of an electric vehicle charging apparatus according to claim 5 or 6, wherein the fault type includes an under-voltage functional limit, an under-voltage non-functional limit, an over-voltage non-functional limit.

8. The method for fault feedback of an electric vehicle charging apparatus according to claim 7, further comprising,

judging whether the undervoltage no-function limit or the overvoltage no-function limit fault type of the charging device changes within preset time;

and if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency.

9. The method of feeding back the failure of the electric vehicle charging device according to claim 4, wherein determining the failure information of the charging device based on the charging device information further comprises,

and determining the fault type of the electric vehicle charging device according to the switch state and the corresponding relation between the preset switch state and the fault type which are configured in advance.

10. The method of feeding back the malfunction of the electric vehicle charging apparatus according to claim 4, wherein before acquiring the charging apparatus information of the electric vehicle charging apparatus, further comprising,

acquiring a charging strategy transmitted by the electric vehicle controller at the original communication frequency;

and executing the charging strategy to obtain an execution result, wherein the execution result comprises the on-off state of the charging device.

11. The fault feedback method of an electric vehicle charging apparatus according to claim 10, wherein the execution result further includes an execution state indicating whether the charging strategy is executed;

determining fault information of the charging device based on the charging device information further comprises,

calculating the difference between the switching state of the charging device and the charging strategy, and determining the fault type of the charging device according to the difference, and/or determining the fault type of the charging device according to the execution state.

12. The method for fault feedback of an electric vehicle charging apparatus according to claim 1, further comprising,

judging whether the charging device has a fault according to the charging device information;

and if the fault does not exist, the charging device communicates with the electric vehicle controller at the original communication frequency.

13. A failure feedback device of an electric vehicle charging device, characterized in that the device comprises,

a charging device information acquisition unit configured to acquire charging device information of a charging device of an electric vehicle;

a fault information determination unit configured to determine fault information of the charging device according to the charging device information;

an adjustment frequency acquisition unit configured to acquire an adjustment frequency higher than an original communication frequency of the charging device information, which is set by an electric vehicle controller, from the fault information and the original communication frequency of the charging device information;

a charging device information transmitting unit configured to transmit the charging device information to the electric vehicle controller according to the adjustment frequency to cause the electric vehicle controller to determine a failure of the charging device according to the charging device information.

14. The failure feedback device of an electric vehicle charging device according to claim 13, characterized in that the failure information includes a failure type.

15. The failure feedback device of an electric vehicle charging device according to claim 14, wherein said adjustment frequency acquiring unit further comprises,

an original communication frequency obtaining module configured to obtain the original communication frequency;

an adjustment frequency obtaining module configured to search frequency values corresponding to the original communication frequency and the fault type in a preset frequency table, and use the searched frequency values as the adjustment frequency.

16. The fault feedback device of an electric vehicle charging device according to claim 15, wherein the charging device information includes a supply voltage and a switching state of the charging device.

17. The failure feedback device of an electric vehicle charging device according to claim 16, characterized in that the failure information determination unit further comprises,

the power supply voltage difference value calculation module is configured to calculate the difference value between the power supply voltage and a power supply voltage preset value;

the fault information determination unit is further configured to determine a type of fault of the electric vehicle charging device according to the difference value.

18. The failure feedback device of an electric vehicle charging device according to claim 16, characterized in that the failure information determination unit further comprises,

and the voltage range comparison module is configured to determine the fault type of the electric vehicle charging device according to the power supply voltage and the corresponding relation between the preset power supply voltage range and the fault type, which is configured in advance.

19. The fault feedback device of an electric vehicle charging device according to claim 17 or 18, wherein the fault type includes an under-voltage functional limit, an under-voltage non-functional limit, an over-voltage non-functional limit.

20. The failure feedback device of an electric vehicle charging device according to claim 19, characterized in that the failure information determination unit further comprises,

the fault type monitoring module is configured to judge whether the under-voltage non-functional limitation or the over-voltage non-functional limitation fault type of the charging device changes within preset time;

and if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency.

21. The failure feedback device of an electric vehicle charging device according to claim 16, characterized in that the failure information determination unit further comprises,

and the switch state comparison module is configured to determine the fault type of the electric vehicle charging device according to the switch state and the corresponding relation between the preset switch state and the fault type, which is configured in advance.

22. The failure feedback device of an electric vehicle charging device according to claim 16, wherein said charging device information acquisition unit further includes,

a charging strategy acquisition module configured to acquire a charging strategy transmitted by the electric vehicle controller at the original communication frequency;

and the charging strategy execution module is configured to execute the charging strategy to obtain an execution result, and the execution result comprises the on-off state of the charging device.

23. The failure feedback device of an electric vehicle charging device according to claim 22, wherein the execution result further includes an execution state indicating whether the charging strategy is executed;

the failure information determination unit further includes a failure information determination unit,

and the switching state difference calculation module is used for calculating the difference between the switching state of the charging device and the charging strategy and determining the fault type of the charging device information according to the difference, and/or the execution state analysis module is used for determining the fault type of the charging device information according to the execution state.

24. The failure feedback device of an electric vehicle charging device according to claim 13,

the fault information determination unit is further configured to determine whether a fault still exists in the charging device information according to the charging device information;

if there is no fault, the charging device information transmitting unit is further configured to communicate with the electric vehicle controller at the original communication frequency.

25. A computer device comprising a memory, a processor, and a computer program stored on the memory, wherein the computer program, when executed by the processor, performs the instructions of the method of any one of claims 1-12.

26. A computer storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor of a computer device, executes instructions of a method according to any one of claims 1-12.

Technical Field

The present disclosure relates to the field of electric vehicles, and more particularly, to a method, an apparatus, and a device for fault feedback of an electric vehicle charging apparatus.

Background

With the rapid development of new energy industries, the number of electric vehicles is increasing, and large-scale electric vehicles bring huge potential safety hazards, wherein the most important is to ensure the safety of the electric vehicles in the charging process.

The electric pile that fills is adopted for charging for electric vehicle among the prior art mostly, and its charging process can be summarized as: inserting a charging gun of a charging pile into a charging device of an electric vehicle, the electric vehicle charging device acquiring the type of the charging gun and a charging voltage, and the type and the charging voltage of the charging gun are sent to a controller of the electric vehicle through a communication bus, the controller of the electric vehicle generates a charging strategy according to the type and the charging voltage of the charging gun, the residual electric quantity of the electric vehicle and the like and sends the charging strategy to a charging device according to a certain sending frequency, the charging device controls the closing of a switch according to the charging strategy and connects the current of the charging gun into a charging system of the electric vehicle, further, the charging device acquires the state of the switch after controlling the closing of the switch according to the charging strategy, and the switch state is sent to the electric vehicle controller at the same sending frequency, so that the electric vehicle controller can realize the closed-loop control of the charging process.

In order to reduce the pressure of an electric vehicle communication bus, the message type and the message sending frequency are usually limited, when an electric vehicle charging device fails, due to the limitation of the message type and the message sending frequency, an electric vehicle controller cannot acquire the failure information of the charging device in time, and further cannot adjust a charging strategy in time to control the on-off state of the charging device, and a charging pile continuously charges the electric vehicle through the failed charging device, so that the potential safety hazard of charging is increased.

At present, a fault feedback method for an electric vehicle charging device is needed, so that the problem that when the electric vehicle charging device in the prior art is in fault, an electric vehicle controller cannot acquire fault information of the vehicle charging device in time, and potential safety hazards of charging are increased is solved.

Disclosure of Invention

In order to solve the problem that in the prior art, when an electric vehicle charging device fails, an electric vehicle controller cannot timely acquire fault information of the vehicle charging device, and potential charging safety hazards are increased, embodiments herein provide a fault feedback method, device and apparatus for an electric vehicle charging device, which send the charging device information when the electric vehicle fails to operate to the electric vehicle controller when detecting that the electric vehicle fails, without adding new hardware or message types, so that the electric vehicle controller can timely acquire the fault of the vehicle charging device, and potential charging safety hazards are reduced.

In order to solve the technical problems, the specific technical scheme is as follows:

in one aspect, embodiments herein provide a fault feedback method of an electric vehicle charging apparatus, including,

acquiring charging device information of a charging device of an electric vehicle;

determining fault information of the charging device according to the charging device information;

acquiring an adjustment frequency higher than an original communication frequency according to the fault information and the original communication frequency of the charging device information, wherein the original communication frequency of the charging device information is set by an electric vehicle controller;

and sending the charging device information to the electric vehicle controller according to the adjusting frequency so that the electric vehicle controller determines the fault of the charging device according to the charging device information.

Further, the fault information includes a fault type.

Further, obtaining an adjustment frequency higher than the original communication frequency according to the fault information and the original communication frequency of the charging device information further includes searching frequency values corresponding to the original communication frequency and the fault type in a preset frequency table, and taking the searched frequency values as the adjustment frequency.

Further, the charging device information includes a supply voltage and a switching state of the charging device.

Further, determining fault information of the charging device based on the charging device information further includes,

calculating the difference value of the power supply voltage and a preset value of the power supply voltage;

determining a type of failure of the electric vehicle charging device based on the difference.

Further, determining fault information of the charging device based on the charging device information further includes,

and determining the fault type of the electric vehicle charging device according to the power supply voltage and the corresponding relation between the preset power supply voltage range and the fault type.

Further, the fault types include under-voltage with functional limitation, under-voltage without functional limitation, over-voltage with functional limitation, over-voltage without functional limitation.

Further, the method may further comprise,

judging whether the undervoltage no-function limit or the overvoltage no-function limit fault type of the charging device changes within preset time;

if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency.

Further, determining fault information of the charging device based on the charging device information further includes,

and determining the fault type of the electric vehicle charging device according to the switch state and the corresponding relation between the preset switch state and the fault type which are configured in advance.

Further, before acquiring the charging device information of the charging device of the electric vehicle, further comprising,

acquiring a charging strategy transmitted by an electric vehicle controller at an original communication frequency;

and executing the charging strategy to obtain an execution result, wherein the execution result comprises the switching state of the charging device.

Further, the execution result further comprises an execution state, and the execution state represents whether the charging strategy is executed or not;

determining the fault information of the charging device based on the charging device information further includes,

the method includes calculating a difference between a switching state of the charging device and a charging strategy, determining a fault type of the charging device according to the difference, and/or determining the fault type of the charging device according to an execution state.

Further, the embodiment herein provides a method for feeding back a fault of an electric vehicle charging device, further comprising determining whether the charging device has a fault according to charging device information;

if there is no fault, the charging device communicates with the electric vehicle controller at the original communication frequency.

In another aspect, embodiments herein also provide a fault feedback device of an electric vehicle charging device, the device including,

a charging device information acquisition unit configured to acquire charging device information of a charging device of an electric vehicle;

a fault information determination unit configured to determine fault information of the charging device according to the charging device information;

an adjustment frequency acquisition unit configured to acquire an adjustment frequency higher than an original communication frequency of the charging device information, which is set by the electric vehicle controller, from the fault information and the original communication frequency of the charging device information;

a charging device information transmitting unit configured to transmit charging device information to the electric vehicle controller according to the adjustment frequency so that the electric vehicle controller determines a malfunction of the charging device according to the charging device information.

Further, the fault information includes a fault type.

Further, the adjustment frequency obtaining unit further comprises,

the original communication frequency acquisition module is configured to acquire an original communication frequency;

and the adjusting frequency obtaining module is configured to search frequency values corresponding to the original communication frequency and the fault type in a preset frequency table, and use the searched frequency values as the adjusting frequency.

Further, the charging device information includes a supply voltage and a switching state of the charging device.

Further, the failure information determination unit further includes,

the power supply voltage difference value calculation module is configured to calculate the difference value between the power supply voltage and a power supply voltage preset value;

the fault information determination unit is further configured to determine a type of fault of the electric vehicle charging device according to the difference value.

Further, the failure information determination unit further includes,

and the voltage range comparison module is configured to determine the fault type of the electric vehicle charging device according to the power supply voltage and the corresponding relation between the preset power supply voltage range and the fault type, which are configured in advance.

Further, the fault information determination unit is further configured to determine the fault type includes an under-voltage functional limitation, an under-voltage non-functional limitation, an over-voltage functional limitation, and an over-voltage non-functional limitation.

Further, the failure information determination unit further includes,

the fault type monitoring module is used for judging whether the under-voltage non-functional limitation or the over-voltage non-functional limitation fault type of the charging device changes within preset time;

if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency.

Further, the failure information determination unit further includes,

and the switch state comparison module is configured to determine the fault type of the electric vehicle charging device according to the switch state and the corresponding relation between the preset switch state and the fault type, which is configured in advance.

Further, the charging device information acquisition unit may further include,

the charging strategy acquisition module is configured to acquire a charging strategy transmitted by the electric vehicle controller at an original communication frequency;

and the charging strategy execution module is configured to execute the charging strategy to obtain an execution result, and the execution result comprises the on-off state of the charging device information.

Further, the execution result further comprises an execution state, and the execution state represents whether the charging strategy is executed or not;

the failure information determination unit may further include,

and the switching state difference calculation module is configured to calculate the difference between the switching state of the charging device and the charging strategy and determine the fault type of the charging device information according to the difference, and/or the execution state analysis module determines the fault type of the charging device information according to the execution state.

Further, the fault information determination unit is further configured to determine whether there is a fault in the charging device information according to the charging device information;

if there is no fault, the charging device information transmission unit is further configured to communicate with the electric vehicle controller at the original communication frequency.

In another aspect, embodiments herein also provide a computer device comprising a memory, a processor, and a computer program stored on the memory, the processor implementing the above method when executing the computer program.

Finally, embodiments herein also provide a computer storage medium having a computer program stored thereon, the computer program, when executed by a processor of a computer device, performing the above-described method.

By utilizing the embodiment, the electric vehicle communicates with the electric vehicle controller through the original communication frequency, when a charging device of the electric vehicle breaks down, the adjusting frequency higher than the original communication frequency is obtained according to the fault information and the original communication frequency, and the charging device information is sent to the electric vehicle controller according to the adjusting frequency, so that the sending speed of the charging device information is improved, the electric vehicle controller can quickly obtain the charging device information when the charging device breaks down, the electric vehicle controller can quickly determine and process the fault according to the charging device information, and the potential safety hazard of charging is reduced.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a system for implementing a fault feedback method for an electric vehicle charging device according to an embodiment of the disclosure;

FIG. 2 is a flow chart illustrating a method of fault feedback for an electric vehicle charging apparatus according to an embodiment of the present disclosure;

FIG. 3 illustrates a process for determining a fault type based on a supply voltage according to embodiments herein;

FIG. 4 illustrates a process for obtaining execution results according to a charging strategy according to embodiments herein;

FIG. 5 illustrates a process for recovering an original communication frequency after determining that a fault condition is eliminated according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram illustrating a fault feedback device of an electric vehicle charging device according to an embodiment of the present disclosure;

fig. 7 is a detailed structural view showing a failure feedback device of an electric vehicle charging device according to an embodiment of the present invention;

fig. 8 is a data flow diagram illustrating a charging device feeding back a fault to a controller according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a computer device according to an embodiment of the present disclosure.

[ description of reference ]:

101. charging piles;

102. an electric vehicle;

1021. a charging device;

1022. a controller;

1023. a battery;

601. a charging device information acquisition unit;

602. a failure information determination unit;

603. an adjustment frequency acquisition unit;

604. a charging device information transmitting unit;

701. a charging device information acquisition unit;

7011. a supply voltage acquisition module;

7012. a charging strategy acquisition module;

7013. a charging policy enforcement module;

7014. an execution state acquisition module;

7015. a switch state acquisition module;

702. a failure information determination unit;

7021. a supply voltage difference value calculation module;

7022. a switch state difference calculation module;

7023. an execution state analysis module;

7024. a voltage range comparison module;

7025. a fault type monitoring module;

7026. a switch state comparison module;

703. an adjustment frequency acquisition unit;

7031. an original communication frequency acquisition module;

7032. adjusting a frequency acquisition module;

704. a charging device information transmitting unit;

902. a computer device;

904. a processing device;

906. a storage resource;

908. a drive mechanism;

910. a communication bus;

912. a network interface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments herein without making any creative effort, shall fall within the scope of protection.

It should be noted that the terms "first," "second," and the like in the description and claims herein and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments herein described are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

Fig. 1 is a schematic diagram of a system for implementing a fault feedback method for an electric vehicle charging device according to an embodiment of the present disclosure, including: charging pile 101, electric vehicle 102, wherein electric vehicle 102 includes charging device 1021, controller 1022 and battery 1023. When the electric vehicle 102 is charged, the charging gun of the charging pile 101 is inserted into the charging device 1021 of the electric vehicle 102, the charging device 1021 acquires the type and charging voltage of the charging gun of the charging pile 101, and transmits the type and charging voltage of the charging gun to the controller 1022 through the communication bus, the controller 1022 generates a charging policy according to the type and charging voltage of the charging gun, the remaining power of the battery 1023, and transmits the charging policy to the charging device 1021 according to a certain transmission frequency, and the charging device 1021 controls the closing of the switch according to the charging policy, charges the power of the charging pile 101 into the battery 1023 of the electric vehicle 102, and further charges the electric vehicle 102. In addition, the charging device 1021 acquires the state of the switch after controlling the switch to be closed according to the charging strategy, and transmits the state of the switch to the controller 1022 at the same transmission frequency, thereby realizing the closed-loop control of the charging process by the controller 1022. In the embodiment herein, the electric vehicle 102 is an electric automobile, and may also be other types of electric vehicles, such as an electric bicycle, and the embodiments herein do not limit the types of electric vehicles.

In order to reduce the pressure on the communication bus of the electric vehicle 102, the message type and the message sending frequency are usually limited, and when the charging device 1021 fails, due to the limitation of the message type and the message sending frequency, the controller 1022 cannot acquire the failure information of the charging device 1021 in time, and cannot adjust the charging strategy in time to control the on-off state of the charging device 1021, so that the charging pile 101 continuously charges the electric vehicle 102 through the failed charging device 1021, and the potential safety hazard of charging is increased.

The method, the device and the equipment for feeding back the fault of the electric vehicle charging device can be applied to the charging device 1021, and the problem that when the charging device 1021 is in fault in the prior art is solved, the controller 1022 cannot acquire the fault information of the charging device 1021 in time, so that potential safety hazards of charging are increased is solved.

Specifically, embodiments herein provide a method for feeding back a fault of a charging device of an electric vehicle, which can improve a transmission speed of information of the charging device and reduce a potential safety hazard of charging. Fig. 2 is a flowchart illustrating a fault feedback method of an electric vehicle charging apparatus according to an embodiment of the present disclosure. The process of fault feedback for an electric vehicle charging apparatus is described in this figure, but may include more or fewer operational steps based on conventional or non-inventive labor. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual system or apparatus product executes, it can execute sequentially or in parallel according to the method shown in the embodiment or the figures. Specifically, as shown in fig. 2, the method may include:

step 201: acquiring charging device information of a charging device of an electric vehicle;

step 202: determining fault information of the charging device according to the charging device information;

step 203: acquiring an adjustment frequency higher than an original communication frequency according to the fault information and the original communication frequency of the charging device information, wherein the original communication frequency of the charging device information is set by an electric vehicle controller;

step 204: and sending the charging device information to the electric vehicle controller according to the adjusting frequency so that the electric vehicle controller determines the fault of the charging device according to the charging device information.

According to the method, the electric vehicle communicates with the electric vehicle controller through the original communication frequency, when a charging device of the electric vehicle breaks down, the adjusting frequency higher than the original communication frequency is obtained according to the fault information and the original communication frequency, the charging device information is sent to the electric vehicle controller according to the adjusting frequency, the sending speed of the charging device information is improved, the electric vehicle controller can quickly obtain the charging device information when the charging device breaks down, the electric vehicle controller can quickly determine and process faults according to the charging device information, and potential safety hazards of charging are reduced.

In the embodiment, when the charging device of the electric vehicle works normally, the charging device and the controller need to communicate continuously, and the charging device sends the charging device information to the controller through a certain frequency, so that the controller guides charging according to the charging device information. When the charging device breaks down, the adjusting frequency higher than the original communication frequency is obtained through the original communication frequency of the fault information and the charging device information, the charging device information is sent to the controller through the adjusting frequency, and the controller can receive the charging device information more quickly and determine the fault of the charging device according to the charging device information.

According to one embodiment herein, the determining in step 202 that the fault information of the charging device includes a fault type from the charging device information.

In the embodiment, the charging device information and the preset fault characteristics can be compared to determine the fault type, wherein the charging device information can comprise a plurality of information types, and therefore, the plurality of fault types can be determined according to the charging device information.

According to an embodiment herein, in order to increase the sending speed of the charging device information and ensure the normal operation of other modules of the electric vehicle, the step 203 of obtaining the adjustment frequency further includes searching frequency values corresponding to both the original communication frequency and the fault type in a preset frequency table, and using the searched frequency values as the adjustment frequency.

In this embodiment, the preset frequency table may use the original communication frequency and the fault type as an index to obtain frequency values corresponding to the specified original communication frequency and the fault type, where the magnitude of the frequency value may indicate the severity of the fault type, and the more serious a certain fault is, the larger the corresponding frequency value is, so as to reduce the time for the controller to receive the charging device information. In addition, the original communication frequency of the charging device information is set by the electric vehicle controller, and the original communication frequency can represent the load condition of the communication bus of the electric vehicle, so that the load condition of the current communication bus is considered when the adjustment frequency is obtained in the embodiment of the text, and further, when the transmission frequency of the charging device information is increased, the normal operation of other modules of the electric vehicle is not influenced.

According to one embodiment herein, the charging device information of the electric vehicle charging device acquired in step 201 further includes a supply voltage and a switching state of the charging device.

In the embodiment, when the supply voltage of the charging device does not conform to the preset normal operating voltage, the normal operation of the charging device is affected, which causes the charging device to malfunction, and therefore the supply voltage of the charging device needs to be sent to the controller, so that the controller determines the malfunction of the charging device according to the magnitude of the supply voltage. In addition, when the switching state of the charging device does not match the preset switching state, the charging device cannot charge the electric vehicle according to the charging strategy set by the controller, so that the charging device fails, and the charging safety hazard is increased.

In this step, for example, the preset normal operating voltage range of the charging device is 8.4V-16.2V, and according to one embodiment of the present disclosure, the fault types represented by the supply voltage of the charging device include: the power supply voltage values corresponding to the fault types can be shown in table 1.

TABLE 1

According to one embodiment herein, to determine the type of fault of the charging device from the supply voltage, as shown in fig. 3, step 202 further comprises,

step 301: calculating the difference value of the power supply voltage and a preset value of the power supply voltage;

step 302: determining a type of failure of the electric vehicle charging device based on the difference.

In this embodiment, a difference between the current supply voltage and the preset value of the supply voltage may indicate whether the charging device is under-voltage or over-voltage, and if the charging device is under-voltage, the too low supply voltage may not meet the working requirements of the modules of the charging device, and if the charging device is over-voltage, the too high supply voltage may cause damage to one or some of the modules of the charging device. In addition, when undervoltage or overvoltage occurs, the specific module with the fault can be further judged according to the physical characteristics of electronic devices in the modules of the charging device, for example, when the power supply voltage is lower than a preset voltage value within a certain range, which modules can still work normally and which modules can not work normally.

Therefore, in this step, a difference between the supply voltage and the preset value of the supply voltage is calculated, a fault type of the electric vehicle charging device is determined according to the difference, so that an adjustment frequency higher than the original communication frequency is obtained according to the fault type and the original communication frequency of the charging device information, the supply voltage of the charging device is sent to the electric vehicle controller according to the adjustment frequency, and the electric vehicle controller determines the fault of the charging device according to the supply voltage. In addition, the fault type of the charging device may also be determined by comparing the supply voltage with the supply voltage range corresponding to each fault state, which is not limited in the embodiment of the present specification.

According to one embodiment herein, step 202 further comprises determining a fault type of the electric vehicle charging apparatus based on the supply voltage and a pre-configured preset supply voltage range to fault type correspondence.

In this step, the corresponding relationship between the power supply voltage range and the fault type shown in table 1 may be configured in advance, and then the power supply voltage range corresponding to the current power supply voltage value of the charging device is searched, so as to determine the fault type corresponding to the current power supply voltage value. For example, the current supply voltage is 8V, and it is determined that the current fault type is under-voltage no-function limitation according to the correspondence between the supply voltage range and the fault type shown in table 1.

With reference to table 1, the preset frequency table in the embodiment of the present disclosure may be as shown in table 2:

TABLE 2

According to the contents of table 2, if the original communication frequency is 200ms, when it is determined that the fault type of the charging device is under-voltage with functional limitation according to the power supply voltage of the charging device, the power supply voltage of the charging device is transmitted to the electric vehicle controller at the adjustment frequency of 20 ms.

According to an embodiment of the present disclosure, in order to avoid a problem that a communication bus pressure is too high when a fault determined according to a supply voltage of a charging device is not serious, the charging device still sends the supply voltage of the charging device to an electric vehicle controller at an adjustment frequency higher than an original communication frequency, the fault feedback method of the charging device for the electric vehicle provided in the embodiment of the present disclosure further includes determining whether a fault type of the charging device that is under-voltage and without functional limitation or over-voltage and without functional limitation changes within a preset time; if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency.

In this step, the faults of the undervoltage non-functional limitation and the overvoltage non-functional limitation are not serious, and the charging device can still work normally, so that whether the fault type of the undervoltage non-functional limitation or the overvoltage non-functional limitation of the charging device changes or not can be judged within the preset time. The preset time may be set according to the adjustment frequency, for example, if the adjustment frequency is 20ms, it may be determined whether the under-voltage non-functional limitation or the overvoltage non-functional limitation fault type of the charging device changes within a time range corresponding to the 5 adjustment frequencies. And if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency, so that the pressure of the communication bus of the electric vehicle is reduced.

According to one embodiment herein, step 202 further includes determining a fault type of the electric vehicle charging apparatus based on the switch state and a pre-configured preset switch state to fault type correspondence.

In this step, the corresponding relationship between the switch state and the fault type may be configured in advance, and then the current switch state of the charging device and which switch state belongs to the preset switch state may be determined, so as to determine the fault type corresponding to the current switch state.

According to an embodiment herein, in order to obtain the switch state in time, thereby reducing the probability of misjudgment and improving the accuracy of fault feedback, as shown in fig. 4, before step 201,

step 401: acquiring a charging strategy transmitted by an electric vehicle controller at an original communication frequency;

step 402: and executing the charging strategy to obtain an execution result, wherein the execution result comprises the switching state of the charging device.

In this embodiment, the controller sends a charging policy at the original communication frequency of the charging device information in step 203, where the charging policy includes a switch state of the charging device, and the charging device adjusts the switch state according to the charging policy when executing the charging policy, so that the current of the charging pile is charged into the battery of the electric vehicle through the switch of the charging device. In this step, the charging device acquires the switch state after executing the charging strategy, so that the timeliness of acquiring the switch state is improved, the probability of misjudgment is reduced, and the accuracy of fault feedback is improved.

According to an embodiment of the present disclosure, the execution result obtained in step 402 further includes an execution status, which indicates whether the charging policy of step 401 is executed.

In embodiments herein, the failure of the charging device may further include not executing the charging strategy, but not successfully executing, and thus step 202 further includes calculating a difference between a state of a charging device switch and the charging strategy, determining a type of failure of the charging device based on the difference, and/or determining the type of failure of the charging device based on the execution state.

In this step, the difference between the on-off state of the charging device and the on-off state in the charging strategy can be calculated, and the charging device switch different from the charging strategy can be found according to the difference; the failure that the charging strategy is not executed can be determined according to the execution state; in combination with the determination of the type of the fault from the difference and the determination of the type of the fault of the charging device from the execution state, it is possible to determine that the charging policy is executed but the successful execution is not performed.

According to an embodiment of the present disclosure, in order to avoid the problem that communication bus pressure is too high due to communication between the electric vehicle charging device and the controller still being performed at an adjustment frequency higher than an original communication frequency after the fault is eliminated, as shown in fig. 5, a fault feedback method for an electric vehicle charging device according to an embodiment of the present disclosure further includes,

step 501: judging whether the charging device has a fault according to the charging device information;

step 502: if there is no fault, the charging device communicates with the electric vehicle controller at the original communication frequency.

In this step, the charging device information may include a supply voltage of the charging device and a switching state of the charging device, and may determine whether the charging device has a fault according to a difference between the supply voltage of the charging device and a preset value of the supply voltage, or may determine whether the charging device has a fault according to the switching state of the charging device and an acquired difference between charging policies sent by the electric vehicle controller and/or according to an execution state of the charging policies. If the fault does not exist, the charging device communicates with the electric vehicle controller at the original communication frequency, the pressure of a communication bus is reduced, and therefore normal work of other modules of the electric vehicle is guaranteed.

Based on the same inventive concept, the present specification further provides a fault feedback device of an electric vehicle charging device, as shown in fig. 6, including a charging device information obtaining unit 601, a fault information determining unit 602, an adjustment frequency obtaining unit 603, and a charging device information transmitting unit 604:

a charging device information acquisition unit 601 that acquires charging device information of an electric vehicle charging device;

a failure information determination unit 602 that determines failure information of the charging device from the charging device information acquired by the charging device information acquisition unit 601;

an adjustment frequency acquisition unit 603 that acquires an adjustment frequency higher than an original communication frequency, which is set by the electric vehicle controller, from the failure information determined by the failure information determination unit 602 and the original communication frequency of the charging device information;

charging device information transmitting section 604 transmits the charging device information acquired by charging device information acquiring section 601 to the electric vehicle controller so that the electric vehicle controller can determine the failure of the charging device based on the charging device information, according to the adjustment frequency acquired by adjustment frequency acquiring section 603.

Further, a detailed structure diagram of the fault feedback device of the electric vehicle charging device according to the embodiment of the present disclosure is shown in fig. 7, where a detailed structure of the fault feedback device of the electric vehicle charging device is described in this figure, and specifically includes a charging device information obtaining unit 701, a fault information determining unit 702, an adjustment frequency obtaining unit 703, and a charging device information transmitting unit 704.

According to an embodiment herein, the charging device information obtaining unit 701 further includes a supply voltage obtaining module 7011, configured to obtain a supply voltage of the charging device, so that the electric vehicle controller determines the fault of the charging device according to a magnitude of the supply voltage.

According to an embodiment of the present disclosure, the charging device information obtaining unit 701 further includes a charging policy obtaining module 7012, configured to obtain a charging policy sent by the electric vehicle controller according to an original communication frequency, where the charging policy includes a switching state of the charging device, and then send the charging policy to the charging policy executing module 7013, so that the charging policy executing module 7013 adjusts the switching state of the charging device according to the obtained charging policy, so that a current of the charging pile is charged into a battery of the electric vehicle through the switching of the charging device.

According to one embodiment herein, the charging device information acquiring unit 701 further includes a charging policy executing module 7013 configured to adjust a switching state of the charging device according to the charging policy acquired by the charging policy acquiring module 7012, so that the current of the charging pile is charged into the battery of the electric vehicle through the switching of the charging device.

According to an embodiment herein, the charging device information acquiring unit 701 further includes an execution state acquiring module 7014, configured to acquire an execution state of the charging policy, where the state may indicate whether the charging policy executing module 7013 executes the charging policy. In the present embodiment, the failure of the charging device further includes that the charging policy is not executed, the charging policy is executed but the execution is not successful, which is indicated by the execution status. Execution state acquisition module 7014 sends the acquired execution state to failure information determination unit 702, so that failure information determination unit 702 determines the type of failure of the charging device according to the execution state.

According to an embodiment of the present disclosure, the charging device information acquiring unit 701 further includes a switch state acquiring module 7015, configured to acquire the switch state of the charging device after the charging policy executing module 7013 executes the charging policy, and then send the switch state of the charging device to the fault information determining unit 702, so that the fault information determining unit 702 determines the fault type of the charging device according to the switch state of the charging device.

According to an embodiment herein, the fault information determining unit 702 further includes a supply voltage difference calculating module 7021, configured to determine a fault type of the charging device according to the supply voltage of the charging device acquired by the supply voltage acquiring module 7011. In this embodiment, a difference between the current supply voltage and the preset value of the supply voltage may indicate whether the charging device is under-voltage or over-voltage, and if the charging device is under-voltage, the too low supply voltage may not meet the working requirements of all modules of the charging device, and if the charging device is over-voltage, the too high supply voltage may cause damage to one or some modules of the charging device. In addition, when undervoltage or overvoltage occurs, the specific module with the fault can be further judged according to the physical characteristics of electronic devices in the modules of the charging device, for example, when the power supply voltage is lower than a preset voltage value within a certain range, which modules can still work normally and which modules can not work normally. Specifically, a difference between the supply voltage and a preset value of the supply voltage may be calculated, a fault type of the electric vehicle charging apparatus may be determined according to the difference, so that the adjustment frequency obtaining unit 703 obtains an adjustment frequency higher than an original communication frequency according to the fault type and the original communication frequency of the charging apparatus information, the charging apparatus information transmitting unit 704 transmits the supply voltage of the charging apparatus to the electric vehicle controller according to the adjustment frequency, and the electric vehicle controller determines a fault of the charging apparatus according to the supply voltage.

According to an embodiment of the present disclosure, the fault information determining unit 702 further includes a switch state difference calculating module 7022, configured to calculate a difference between the switch state acquired by the switch state acquiring module 7015 and the switch state in the charging policy acquired by the charging policy acquiring module 7012, find a charging device switch different from the charging policy according to the difference, and determine a fault type of the charging device. So that the adjustment frequency acquisition unit 703 acquires an adjustment frequency higher than the original communication frequency according to the type of the fault and the original communication frequency of the charging device information, the charging device information transmission unit 704 transmits the switching state of the charging device to the electric vehicle controller according to the adjustment frequency, and the electric vehicle controller determines the fault of the charging device according to the switching state.

According to an embodiment of the present disclosure, the fault information determining unit 702 further includes an execution state analyzing module 7023, configured to analyze the execution state acquired by the execution state acquiring module 7014, and determine a fault that the charging policy is not executed according to the execution state.

According to an embodiment herein, the fault information determination unit 702 further includes a voltage range comparison module 7024 for determining a fault type of the electric vehicle charging apparatus according to the switch status and a pre-configured corresponding relationship between the preset switch status and the fault type. The fault types represented by the power supply voltage of the charging device in the embodiment of the invention can include undervoltage functional limitation, undervoltage non-functional limitation, overvoltage functional limitation and overvoltage non-functional limitation as shown in table 1.

Specifically, the corresponding relationship between the supply voltage range and the fault type shown in table 1 may be configured in advance, and then the supply voltage range corresponding to the current supply voltage value of the charging device is searched, so as to determine the fault type corresponding to the current supply voltage value. For example, the current supply voltage is 8V, and it is determined that the current fault type is under-voltage no-function limitation according to the correspondence between the supply voltage range and the fault type shown in table 1.

According to an embodiment of the present disclosure, the fault information determining unit 702 further includes a fault type monitoring module 7025, which determines whether the under-voltage and non-functional limitation or the overvoltage and non-functional limitation fault type of the charging device changes within a preset time; if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency.

In this embodiment, the faults of the under-voltage non-functional limitation and the overvoltage non-functional limitation are not serious, and the charging device can still work normally, so that whether the fault type of the under-voltage non-functional limitation or the overvoltage non-functional limitation of the charging device changes or not can be judged within a preset time. The preset time may be set according to the adjustment frequency, for example, if the adjustment frequency is 20ms, it may be determined whether the under-voltage non-functional limitation or the overvoltage non-functional limitation fault type of the charging device changes within a time range corresponding to the 5 adjustment frequencies. And if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency, so that the pressure of the communication bus of the electric vehicle is reduced.

According to an embodiment herein, the fault information determination unit 702 further includes a switch state comparison module 7026 for determining a fault type of the electric vehicle charging apparatus according to the switch state and a pre-configured corresponding relationship between a preset switch state and the fault type.

In this embodiment, the corresponding relationship between the switch states and the fault types may be preconfigured, and then the current switch state of the charging device and which switch state belongs to the preconfigured switch states may be determined, so as to determine the fault type corresponding to the current switch state.

According to an embodiment herein, the fault information determination unit 702 may further determine a fault that the charging policy is executed but the execution is not successful, in combination with the fault type determined by the switch state difference calculation module 7022 and the fault type determined by the execution state analysis module 7023.

According to an embodiment of the present disclosure, the fault information determining unit 702 may further determine whether the charging device has a fault according to the charging device information acquired by the charging device information acquiring unit 701, and if the charging device has no fault, the charging device communicates with the electric vehicle controller at the original communication frequency acquired by the original communication frequency acquiring module 7031, so as to avoid a problem that communication bus pressure is too high due to communication between the electric vehicle charging device and the controller still performed at an adjustment frequency higher than the original communication frequency after the fault is eliminated.

Specifically, whether the charging device has a fault may be determined according to the difference between the supply voltage of the charging device and the preset value of the supply voltage, which is obtained by the supply voltage obtaining module 7011, or according to the difference between the on-off state of the charging device, which is obtained by the on-off state obtaining module 7015, and the charging policy, which is obtained by the charging policy obtaining module 7012, and/or according to the execution state of the charging policy, which is obtained by the charging execution state obtaining module 7014.

According to an embodiment herein, the adjustment frequency obtaining unit 703 further includes an original communication frequency obtaining module 7031 for obtaining an original communication frequency for communicating with the charging device set by the electric vehicle controller according to a load condition of a communication bus of the electric vehicle. When the charging device of the electric vehicle works normally, the charging device and the controller continuously communicate according to the original communication frequency, the charging device sends charging device information including power supply voltage and switching state to the controller through the original communication frequency, and the controller guides charging according to the charging device information.

According to an embodiment of the present disclosure, the adjustment frequency obtaining unit 703 further includes an adjustment frequency obtaining module 7032, configured to obtain an adjustment frequency higher than the original communication frequency according to the fault type of the charging device determined by the fault information determining unit 702 and the original communication frequency obtained by the original communication frequency obtaining module 7031, so that the adjustment frequency obtaining unit 703 obtains the adjustment frequency higher than the original communication frequency according to the fault type and the original communication frequency of the charging device information, the charging device information sending unit 704 sends the power supply voltage of the charging device to the electric vehicle controller according to the adjustment frequency, and the electric vehicle controller determines the fault of the charging device according to the power supply voltage.

Specifically, frequency values corresponding to the original communication frequency and the fault type may be searched in a preset frequency table, and the searched frequency values are used as adjustment frequencies, where the preset frequency table may use the original communication frequency and the fault type as indexes to determine frequency values corresponding to the specified original communication frequency and the fault type, where the frequency value may indicate the severity of the fault type, and the more serious a certain fault is, the larger the corresponding frequency value is, so as to reduce the time for the controller to receive the charging device information. In addition, the original communication frequency of the charging device information is set by the electric vehicle controller, and the original communication frequency can represent the load condition of the communication bus of the electric vehicle, so that the load condition of the current communication bus is considered when the adjustment frequency is obtained, and further, when the transmission speed of the charging device information is increased, the normal operation of other modules of the electric vehicle is not influenced.

According to an embodiment herein, the charging device information transmitting unit 704 is configured to transmit the charging device information including the supply voltage and the switching state of the charging device acquired by the charging device information acquiring unit 701 to the electric vehicle controller according to the adjustment frequency acquired by the adjustment frequency acquiring module 7032, so that the electric vehicle controller receives the charging device information more quickly and determines the failure of the charging device according to the charging device information.

Fig. 8 is a data flow diagram of the charging device feeding back the fault to the controller according to the embodiment of the present disclosure, which includes the following specific processes:

step 801, the charging device receives a current of a charging pile.

In this step, the charging device may further obtain information of the charging pile, and send the information of the charging pile to the controller, so that the controller generates a charging policy according to the information of the charging pile.

Step 802, the controller sends a charging strategy to the charging device according to the original communication frequency.

And step 803, the charging device adjusts the switch state according to the charging strategy, and charges the current of the charging pile into the battery.

In this step, the charging device may include a plurality of switches, and the switches are controlled to be turned on and off according to the charging policy, so as to charge the battery with the current of the charging pile.

And step 804, the charging device acquires the power supply voltage and the switching state, and sends the power supply voltage and the switching state to the controller at the original communication frequency.

In this step, when the charging device fails, the power supply voltage and the switching state of the charging device need to be acquired, and the power supply voltage and the switching state are sent to the controller, so that the controller monitors the operation of the charging device.

In step 805, the charging device obtains a supply voltage and a charging policy execution result.

In this step, the charging device obtains the execution results of the power supply voltage and the charging policy in the fault state, and determines whether a fault occurs according to the execution results of the power supply voltage and the charging policy.

In step 806, the charging device determines fault information of the charging device according to the supply voltage.

In this step, the charging device determines the fault information of the charging device according to the difference between the supply voltage in the fault state and the preset value of the supply voltage. The fault information includes a fault type, for example, a difference value between a supply voltage and a preset value of the supply voltage may indicate whether the charging device is under-voltage or over-voltage, and the like, if the charging device is under-voltage, an excessively low supply voltage may not meet the working requirements of each module of the charging device, and if the charging device is over-voltage, an excessively high supply voltage may cause damage to one or some modules of the charging device. In addition, when undervoltage or overvoltage occurs, the specific module with the fault can be further judged according to the physical characteristics of electronic devices in the modules of the charging device, for example, when the power supply voltage is lower than a preset voltage value within a certain range, which modules can still work normally and which modules can not work normally.

In addition, the fault type of the electric vehicle charging device can be determined according to the power supply voltage and the corresponding relation between the preset power supply voltage range and the fault type, wherein the preset power supply voltage range and the corresponding relation are configured in advance. Specifically, the corresponding relationship between the supply voltage range and the fault type shown in table 1 may be configured in advance, and then the supply voltage range corresponding to the current supply voltage value of the charging device is searched, so as to determine the fault type corresponding to the current supply voltage value.

In the embodiments herein, the fault types represented by the charging device supply voltage may include an under-voltage functional limit, an under-voltage non-functional limit, an over-voltage functional limit, and an over-voltage non-functional limit as shown in table 1.

In step 807, the charging device obtains the adjustment frequency according to the fault information and the original communication frequency.

In this step, the charging device may search frequency values corresponding to the original communication frequency and the fault type in a preset frequency table, and use the searched frequency values as adjustment frequencies, and the preset frequency table may use the original communication frequency and the fault type as indexes to obtain frequency values corresponding to the specified original communication frequency and the fault type, where the frequency value may indicate a severity of the fault type, and the more serious a certain fault is, the larger the corresponding frequency value is, so as to reduce a time for the controller to receive information of the charging device.

Step 808, the charging device sends the supply voltage to the controller according to the adjustment frequency, so that the controller determines the fault according to the fault information.

In this step, the charging device sends the supply voltage to the controller according to the adjustment frequency higher than the original communication frequency, so that the controller can receive the supply voltage when the charging device fails more quickly, and the failure of the charging device can be determined more quickly.

In step 809, the charging device determines fault information of the charging device according to the execution result of the charging policy.

In this step, the fault information includes a fault type, and the execution result of the charging policy includes an execution state of the charging policy and a switch state, where the execution state indicates whether the charging policy is executed. Calculating the difference between the on-off state of the charging device and the on-off state in the charging strategy, and finding the charging device switch different from the charging strategy according to the difference; the failure that the charging strategy is not executed can be determined according to the execution state; in combination with the determination of the type of the fault from the difference and the determination of the type of the fault of the charging device from the execution state, it is possible to determine that the charging policy is executed but the successful execution is not performed.

In addition, the fault type of the electric vehicle charging device can be determined according to the switch state and the corresponding relation between the preset switch state and the fault type, wherein the preset switch state and the fault type are configured in advance. Specifically, the corresponding relationship between the switch state and the fault type may be configured in advance, and then the current switch state of the charging device and which switch state belongs to the preset switch state may be determined, so as to obtain the fault type corresponding to the current switch state.

In step 810, the charging device obtains an adjustment frequency according to the fault information and the original communication frequency.

In this step, similar to step 807, the charging device may search frequency values corresponding to the original communication frequency and the fault type in a preset frequency table, and use the searched frequency values as the adjustment frequency.

In step 811, the charging device sends the switching status to the controller according to the adjustment frequency, so that the controller determines the fault according to the fault information.

In this step, the charging device sends the switching state to the controller according to the adjustment frequency higher than the original communication frequency, so that the controller can receive the switching state when the charging device fails more quickly, and the failure of the charging device can be determined more quickly.

At step 812, the controller adjusts the charging strategy based on the switch state.

In step 813, the controller sends the adjusted charging policy to the charging device according to the adjustment frequency.

In this step, in order to process the failure more quickly, the adjusted charging policy is transmitted to the charging device according to the adjustment frequency higher than the original communication frequency, so that the charging device can receive the adjusted charging policy more quickly so as to process the failure by executing the adjusted charging policy.

In step 814, the charging device executes the adjusted charging policy and determines whether there is any fault.

In this step, after executing the adjustment strategy, the charging device determines whether there is any fault in the same manner as in steps 806 and 809, and if there is any fault, repeats step 805 and 811.

In addition, the charging device can also judge whether the undervoltage no-function limit or the overvoltage no-function limit fault type of the charging device changes within the preset time; if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency. The charging device can still work normally, so that whether the type of the faults of the charging device is changed within the preset time can be judged. The preset time may be set according to the adjustment frequency, for example, if the adjustment frequency is 20ms, it may be determined whether the under-voltage non-functional limitation or the overvoltage non-functional limitation fault type of the charging device changes within a time range corresponding to the 5 adjustment frequencies. And if the communication frequency is not changed, the charging device sends the power supply voltage of the charging device to the electric vehicle controller according to the original communication frequency, so that the pressure of the communication bus of the electric vehicle is reduced.

Step 815, the charging device sends the charging voltage and the switch state to the controller according to the original communication frequency when the fault does not exist.

In this step, if there is no fault, the charging device communicates with the electric vehicle controller at the original communication frequency, and the pressure of the communication bus is reduced, thereby ensuring the normal operation of other modules of the electric vehicle.

As shown in fig. 9, which is a schematic structural diagram of a computer device in an embodiment herein, a fault feedback device of an electric vehicle charging apparatus in the present embodiment may be a computer device in the present embodiment, and performs the method in the present embodiment. Computer device 902 may include one or more processing devices 904, such as one or more Central Processing Units (CPUs), each of which may implement one or more hardware threads. Computer device 902 may also include any storage resources 906 for storing any kind of information, such as code, settings, data, etc. For example, without limitation, storage resources 906 may include any one or more of the following in combination: any type of RAM, any type of ROM, flash memory devices, hard disks, optical disks, etc. More generally, any storage resource may use any technology to store information. Further, any storage resource may provide volatile or non-volatile reservation of information. Further, any storage resources may represent fixed or removable components of computer device 902. In one case, when processing device 904 executes associated instructions stored in any storage resource or combination of storage resources, computer device 902 can perform any of the operations of the associated instructions. The computer device 902 also includes one or more drive mechanisms 908, such as a crystal oscillator or the like, for interacting with any storage resource to provide an operational clock signal for the processing device.

The computer device 902 may also include one or more network interfaces 912, such as a CAN receive module, for receiving data sent by the controller. One or more communication buses 910 couple the above-described components together.

Corresponding to the methods in fig. 2-5, 8, the present embodiments also provide a computer readable storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the method for optimizing a fault feedback device of an electric vehicle charging device.

Embodiments herein also provide a computer readable instruction, wherein when the instruction is executed by a processor, the program causes the processor to execute the method as shown in fig. 2-5, 8.

It should be understood that, in various embodiments herein, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments herein.

It should also be understood that, in the embodiments herein, the term "and/or" is only one kind of association relation describing an associated object, meaning that three kinds of relations may exist. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments herein.

In addition, functional units in the embodiments herein may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present invention may be implemented in a form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The principles and embodiments of this document are explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts; meanwhile, for the general technical personnel in the field, according to the idea of this document, there may be changes in the concrete implementation and the application scope, in summary, this description should not be understood as the limitation of this document.