阅读说明：本技术 一种电动汽车充电指示灯控制系统 (Electric automobile charge indicator control system ) 是由 潘志强 张明 吴波 黄敏 于 2020-12-18 设计创作，主要内容包括：本发明设计的电动汽车充电指示灯控制系统,包括：车载充电机、充电插座、整车控制器或电池管理系统、车身控制器、LED显示总成。本发明可以减少独立式交流、直流插座所带来的的布置问题和成本、重量、体积等劣势,可以显示更多的充电状态信息,给用户更好的充电体验。(The invention designs an electric automobile charging indicator lamp control system, which comprises: the vehicle-mounted charging device comprises a vehicle-mounted charger, a charging socket, a vehicle control unit or a battery management system, a vehicle body controller and an LED display assembly. The invention can reduce the problems of arrangement, cost, weight, volume and the like caused by independent AC and DC sockets, can display more charging state information and provides better charging experience for users.)

1. The utility model provides an electric automobile charge pilot lamp control system which characterized in that includes:

the vehicle-mounted charger charges the power battery pack;

the charging socket supplies power to the vehicle-mounted charger;

the vehicle control unit or the battery management system is communicated and interacted with the vehicle-mounted charger, controls the charging process, identifies the current charging and discharging scene, and sends a charging and discharging state signal and an SOC value to the vehicle body controller;

the vehicle body controller controls the LED display assembly to display different lamp languages according to the recognized charging and discharging scene according to the charging and discharging state signal and the SOC value from the vehicle controller or the battery management system;

and the LED display assembly is communicated with the vehicle body controller, and different charging and discharging scenes are represented by lamp words with different states and colors.

2. The electric vehicle charging indicator light control system of claim 1, wherein: the vehicle-mounted charger collects the CC resistance value of the charging socket and reports the CC signal to the vehicle controller or the battery management system through CAN communication.

3. The electric vehicle charging indicator light control system of claim 1, wherein: the vehicle controller or the battery management system is charged and interacted with the charger through CAN communication, and the charging state is informed to the vehicle body controller through the CAN.

4. The electric vehicle charging indicator light control system of claim 1, wherein: and the vehicle body controller controls the display state of the LED display assembly in an SCI communication mode according to the charging state to display charging information.

5. The electric vehicle charging indicator light control system of claim 1, wherein: the charging and discharging scene comprises the following steps:

scene 1: the vehicle-mounted charger cannot detect the CC signal of the gun end when the gun is not plugged; the signal reported to the vehicle controller or the battery management system is 0;

scene 2: during charging, a signal reported by a vehicle-mounted charger to a vehicle controller or a battery management system is 100, or 220, or 680, or 1500; and the Charging state signal reported by the vehicle-mounted charger is Charging; and the vehicle control unit or the battery management system judges that the SOC value is lower than 100 percent and the battery is not fully charged.

Scene 3: when the vehicle is fully charged, the signal reported by the vehicle-mounted charger to the vehicle controller or the battery management system is 100, or 220, or 680, or 1500; and the vehicle control unit or the battery management system judges that the SOC value is equal to 100 percent and the battery is fully charged.

Scene 4: when charging and discharging faults occur, the charging state signal reported to the vehicle controller or the battery management system by the vehicle-mounted charger is Fault;

scene 5: reserving for charging, wherein a signal reported to a vehicle controller or a battery management system by a vehicle-mounted charger is 100, or 220, or 680, or 1500; and the vehicle control unit or the battery management system receives a reserved charging instruction from the vehicle TBOX;

scene 6: during DisCharging, a signal reported by the vehicle-mounted charger to the vehicle controller or the battery management system is 2200, and a charging state signal reported by the vehicle-mounted charger is Discharging;

scene 7: when the gun is not charged, the signal reported to the vehicle controller or the battery management system by the vehicle-mounted charger is 100, or 220, or 680, or 1500; the charging state signal reported by the vehicle-mounted charger is Standby;

scene 8: when the gun is not discharged, the signal reported to the vehicle controller or the battery management system by the vehicle-mounted charger is 2200; and the charging state signal reported by the vehicle-mounted charger is Standby.

6. The electric vehicle charging indicator light control system of claim 1, wherein: the vehicle-mounted charger is an integrated charger controller or an independent charger module which integrates a DCDC or PDU distribution box module.

7. The electric vehicle charging indicator light control system of claim 1, wherein: the LED display assembly comprises five LED lamps, and each LED lamp represents 20% of SOC when being always on as green.

8. The electric vehicle charging indicator light control system of claim 1, wherein: the charging socket is an alternating current-direct current integrated charging socket.

Technical Field

The invention belongs to the technical field of electric automobile charging equipment, and particularly relates to a control system of an electric automobile charging indicator lamp.

Background

The charging mode of the electric automobile comprises alternating current charging and direct current charging, and an alternating current charging seat and a direct current charging socket are respectively applied, and the two charging sockets can be independently arranged on the automobile and can also be integrated into a whole. The mainstream charging socket product scheme is an alternating current socket and a direct current socket which are independently arranged, but the independent scheme has no advantages in cost, volume and weight. Some new car building forces are more prospective in the design of the charging socket, more AC/DC integrated charging sockets are applied, the arrangement on the whole car can be simplified, the weight and the cost are reduced, the novel car building potential is more attractive, and the customer perception is better.

The electric vehicle charging indicator light or the charging atmosphere light has application cases on electric vehicles of various home enterprises, but the technical scheme, the shape and the control strategy are different, but the design is simple generally, the displayed information is limited, and only the simple charging state is displayed, such as charging and charging ending, the user perception is poor, and the user experience is poor.

Disclosure of Invention

Aiming at the problems in the background art, the invention aims to provide an electric vehicle charging indicator lamp control system which can display more charging information and improve the charging experience of a user.

In order to achieve the above object, the present invention provides a control system for a charging indicator lamp of an electric vehicle, comprising:

the vehicle-mounted charger charges the power battery pack;

the charging socket supplies power to the vehicle-mounted charger;

the vehicle control unit or the battery management system is communicated and interacted with the vehicle-mounted charger, controls the charging process, identifies the current charging and discharging scene, and sends a charging and discharging state signal and an SOC value to the vehicle body controller;

the vehicle body controller controls the LED display assembly to display different lamp languages according to the recognized charging and discharging scene according to the charging and discharging state signal and the SOC value from the vehicle controller or the battery management system;

and the LED display assembly is communicated with the vehicle body controller, and different charging and discharging scenes are represented by lamp words with different states and colors.

Preferably, the vehicle-mounted charger collects a CC resistance value of the charging socket and reports a CC signal to the vehicle control unit or the battery management system through CAN communication.

Preferably, the vehicle control unit or the battery management system performs charging interaction with the charger through CAN communication, and informs the charging state to the vehicle body controller through the CAN.

Preferably, the vehicle body controller controls the display state of the LED display assembly in an SCI communication mode according to the charging state to display the charging information.

Preferably, the charging and discharging scenario includes:

scene 1: the vehicle-mounted charger cannot detect the CC signal of the gun end when the gun is not plugged; the signal reported to the vehicle controller or the battery management system is 0;

scene 2: during charging, a signal reported by a vehicle-mounted charger to a vehicle controller or a battery management system is 100, or 220, or 680, or 1500; and the Charging state signal reported by the vehicle-mounted charger is Charging; and the vehicle control unit or the battery management system judges that the SOC value is lower than 100 percent and the battery is not fully charged.

Scene 3: when the vehicle is fully charged, the signal reported by the vehicle-mounted charger to the vehicle controller or the battery management system is 100, or 220, or 680, or 1500; and the vehicle control unit or the battery management system judges that the SOC value is equal to 100 percent and the battery is fully charged.

Scene 4: when charging and discharging faults occur, the charging state signal reported to the vehicle controller or the battery management system by the vehicle-mounted charger is Fault;

scene 5: reserving for charging, wherein a signal reported to a vehicle controller or a battery management system by a vehicle-mounted charger is 100, or 220, or 680, or 1500; and the vehicle control unit or the battery management system receives a reserved charging instruction from the vehicle TBOX;

scene 6: during DisCharging, a signal reported by the vehicle-mounted charger to the vehicle controller or the battery management system is 2200, and a charging state signal reported by the vehicle-mounted charger is Discharging;

scene 7: when the gun is not charged, the signal reported to the vehicle controller or the battery management system by the vehicle-mounted charger is 100, or 220, or 680, or 1500; the charging state signal reported by the vehicle-mounted charger is Standby;

scene 8: when the gun is not discharged, the signal reported to the vehicle controller or the battery management system by the vehicle-mounted charger is 2200; and the charging state signal reported by the vehicle-mounted charger is Standby.

Preferably, the vehicle-mounted charger is an integrated charger controller integrated with a DCDC or PDU power distribution box module or an independent charger module.

Preferably, the LED display assembly includes five LED lamps, and each LED lamp represents 20% SOC when it is normally on green.

Preferably, the charging socket is an alternating current-direct current integrated charging socket.

The invention has the beneficial effects that: the invention can reduce the problems of arrangement, cost, weight, volume and the like caused by independent AC and DC sockets, can display more charging state information and provides better charging experience for users.

The user can know that the vehicle is currently in a charging, discharging, reserved charging or charging failure state through the lamp language of the charging indicator lamp, can know the SOC of the current vehicle battery, knows the approximate electric quantity, and more clearly knows the charging state of the vehicle.

Drawings

FIG. 1 is a system block diagram of the present invention

Detailed Description

The invention will now be described in further detail, including the preferred embodiments, by means of figure 1 and by way of a list of some alternative embodiments of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

As shown in fig. 1, the present invention provides a control system for an electric vehicle charging indicator light, comprising: the system comprises a charging socket, an LED display assembly, an on-board battery charger (OBC), a Vehicle Control Unit (VCU) or Battery Management System (BMS), a vehicle Body Controller (BCM), CAN communication, Serial Communication (SCI) and a CC resistance sampling line.

And the vehicle-mounted charger (OBC) converts alternating current into direct current to charge the power battery pack. The vehicle-mounted charger detects a CC resistance signal from a charging gun end; preferably, the vehicle-mounted charger is an integrated charger controller integrated with a DCDC or PDU power distribution box module or an independent charger module. The vehicle-mounted charger collects the CC resistance value of the charging socket and reports the CC signal to the vehicle controller or the battery management system through CAN communication (depending on whether the vehicle is charged through a VCU or a BMS and the charger).

The charging socket supplies power to the vehicle-mounted charger; preferably, the charging socket is an alternating current-direct current integrated charging socket; the AC charging socket and the DC charging socket are integrated into a part, and an AC charging gun can be inserted into the part or a DC charging gun can be inserted into the part.

And the Vehicle Control Unit (VCU) or the Battery Management System (BMS) is communicated and interacted with the vehicle-mounted charger, controls the charging process, identifies the current charging and discharging scene and sends the charging and discharging state signal and the SOC value to the vehicle body controller. The vehicle controller or the battery management system is charged and interacted with the charger through CAN communication, and the charging state is informed to the vehicle body controller through the CAN.

And the vehicle Body Controller (BCM) controls the LED display assembly to display different lamp languages according to the charge and discharge state signals and the SOC value from the vehicle controller or the battery management system and the identified charge and discharge scene. And the vehicle body controller controls the display state of the LED display assembly in an SCI communication mode according to the charging state to display charging information.

And the LED display assembly is communicated with the vehicle body controller, and different charging and discharging scenes are represented by lamp words with different states and colors.

The invention divides charging and discharging scenes and displays different charging information according to different scenes.

The battery S0C of the electric vehicle is 0-100%, and each LED represents 20% of SOC;

the charging scene is divided into: the method comprises 8 scenes of no gun insertion charging, full gun insertion, charging and discharging failure, reserved charging, external discharging, gun insertion but not charging, and gun insertion but not external discharging;

for the display of the SOC, taking the scene during charging as an example, when the current SOC is 20% to 40% SOC, the LED1 is normally on in green, and the LED2 flashes in green; when the current SOC is 40% -60% SOC, the LED1 is normally on in green, the LED2 is normally on in green, and the LED3 is flickering in green;

taking SOC (state of charge) of more than or equal to 20% and less than 40% as an example, the control strategy of the charge indicator lamp based on the charge and discharge scene designed by the invention is shown in the following table.

And (3) a user inserts a gun, the vehicle-mounted charger is awakened by the CC signal, the charging opportunity reports the detected CC state signal to the VCU/BMS, and the charger reports the charging state signal of the charger to the VCU/BMS.

Scene 1: the OBC can not detect the CC signal of the gun end when the gun is not inserted; the signal reported to the VCU/BMS is 0.

Scene 2: during charging, the signal reported to the VCU/BMS by the OBC is 100, 220, 680 or 1500; and the Charging state signal reported by the OBC is Charging; and the VCU/BMS judges that the SOC value is lower than 100 percent and the battery is not fully charged.

Scene 3: fully charged, the signal reported by the OBC to the VCU/BMS is 100, or 220, or 680, or 1500; and the VCU/BMS judges that the SOC value is equal to 100 percent and the battery is fully charged.

Scene 4: and when the charging and discharging faults occur, the charging state signal reported to the VCU/BMS by the OBC is Fault.

Scene 5: charging is reserved, and the signal reported to the VCU/BMS by the OBC is 100, 220, 680 or 1500; and the VCU/BMS receives the scheduled charging command from the vehicle TBOX.

Scene 6: during DisCharging, the signal reported to the VCU/BMS by the OBC is 2200, and the charging state signal reported by the OBC is Discharging.

Scene 7: when the gun is not charged, the signal reported to the VCU/BMS by the OBC is 100, or 220, or 680, or 1500; and the charging state signal reported by the OBC is Standby.

Scene 8: the gun is not discharged, and the signal reported to the VCU/BMS by the OBC is 2200; and the charging state signal reported by the OBC is Standby.

With reference to GB/T18487.1-2015, the meaning of the various signals indicated in the present invention is:

100: indicating that the vehicle interface is fully connected and the charging cable capacity is 63A;

220: indicating that the vehicle interface is fully connected and the charging cable capacity is 32A;

680: indicating that the vehicle interface is fully connected and the charging cable capacity is 16A;

1500: indicating that the vehicle interface is fully connected and the charging cable capacity is 10A;

2200: indicating that the vehicle has attached the discharge gun;

charging: charging;

a Fault: a failure;

discharging: discharging;

standby: and (5) standby.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and any modification, combination, replacement, or improvement made within the spirit and principle of the present invention is included in the scope of the present invention.