阅读说明：本技术 充电系统 (Charging system ) 是由 杨满 李小冬 贺石磊 倪威 王成昆 于 2021-07-29 设计创作，主要内容包括：本申请实施例提供了一种充电系统,包括：第一电池箱、第二电池箱、充电机箱以及控制机箱。第一电池箱中设置有第一电池包组件以及主控制组件,第一电池包组件与主控制组件电连接,第二电池箱中设置有第二电池包组件,第二电池包组件与主控制组件电连接。控制机箱中设置有从控制组件、第一控制开关以及第二控制开关,第一控制开关以及第二控制开关均与从控制组件电连接,第一电池包组件通过第一控制开关与充电模块电连接,第二电池包组件通过第二控制开关与充电模块电连接。因此,在给电动汽车的两个电池箱进行换电的过程中,主控制组件可以通过电信号控制从控制组件,使得两个电池箱充电结束后的电压、温度保持一致。(An embodiment of the present application provides a charging system, including: the battery charger comprises a first battery box, a second battery box, a charger box and a control cabinet. The first battery box is provided with a first battery pack assembly and a main control assembly, the first battery pack assembly is electrically connected with the main control assembly, the second battery box is provided with a second battery pack assembly, and the second battery pack assembly is electrically connected with the main control assembly. The control cabinet is provided with a slave control assembly, a first control switch and a second control switch, the first control switch and the second control switch are electrically connected with the slave control assembly, the first battery pack assembly is electrically connected with the charging module through the first control switch, and the second battery pack assembly is electrically connected with the charging module through the second control switch. Therefore, in the process of replacing the batteries of the two battery boxes of the electric automobile, the main control assembly can control the auxiliary control assembly through the electric signal, so that the voltages and the temperatures of the two battery boxes after the charging are kept consistent.)

1. An electrical charging system, comprising: the battery charger comprises a first battery box, a second battery box, a charger box and a control cabinet;

the first battery box is provided with a first battery pack assembly and a main control assembly, and the first battery pack assembly is electrically connected with the main control assembly; a second battery pack assembly is arranged in the second battery box and is electrically connected with the main control assembly;

the charger box is provided with a charging module and a control module, the main control assembly is electrically connected with the control module, and the charging module is electrically connected with the control module; a slave control assembly, a first control switch and a second control switch are arranged in the control cabinet, and the master control assembly is electrically connected with the slave control assembly; the first control switch and the second control switch are electrically connected with the slave control assembly, the first battery pack assembly is electrically connected with the charging module through the first control switch, and the second battery pack assembly is electrically connected with the charging module through the second control switch;

the main control assembly is used for acquiring battery data of the first battery pack assembly and the second battery pack assembly, determining first power supply information of the first battery pack assembly and the second battery pack assembly according to the battery data, and sending the first power supply information to the control module so that the control module can control the charging module to output target voltage according to the first power supply information, and the main control assembly sends an instruction to the slave control assembly so that the slave control assembly controls the first control switch and the second control switch to be in a conducting state.

2. The charging system according to claim 1, wherein a first cooling assembly is further provided in the first battery box, the first cooling assembly being electrically connected to the main control assembly;

a second cooling assembly is further arranged in the second battery box and electrically connected with the main control assembly;

the main control assembly is used for controlling the first cooling assembly and the second cooling assembly so that the first cooling assembly and the second cooling assembly respectively control the temperature of the first battery pack assembly and the temperature of the second battery pack assembly in the charging process.

3. The charging system according to claim 2, wherein a power module is further arranged in the charger case, and the power module is electrically connected with the control module;

the power supply module is electrically connected with the master control assembly, the slave control assembly, the first cooling assembly and the second cooling assembly respectively;

the power module is used for providing electric energy for the master control assembly, the slave control assembly, the first cooling assembly and the second cooling assembly so as to enable the master control assembly, the slave control assembly, the first cooling assembly and the second cooling assembly to operate.

4. The charging system of claim 1, wherein the slave control component is further configured to monitor second power information of the first control switch and the second control switch in real time, and feed the second power information back to the master control component, so that the master control component adjusts the first power information in real time according to the second power information and the battery data.

5. The charging system of claim 1, further comprising a control switch, a first end of the control switch being electrically connected to the power module, a second end of the control switch being electrically connected to the master control assembly, the slave control assembly, the first cooling assembly, and the second cooling assembly, respectively;

the control end of the control switch is electrically connected with the control module, and the control module is used for controlling the on/off of the control switch.

6. The charging system of claim 1, further comprising a first battery compartment and a second battery compartment;

a first contact is arranged on the first battery box, a first electrode is arranged in the first battery compartment, and the first contact is matched with the first electrode;

a second contact is arranged on the second battery box, a second electrode is arranged in the second battery compartment, and the second contact is matched with the second electrode;

the slave control assembly is electrically connected with the first electrode and the second electrode respectively, and is used for acquiring first conduction information on the first electrode and second conduction information on the second electrode so as to determine whether the first contact is in contact with the first electrode or not and whether the second contact is in contact with the second electrode or not.

7. The charging system according to claim 6, wherein a data transmission module is further arranged in the charger case;

the data transmission module is electrically connected with the master control assembly, the slave control assembly is used for sending the first conduction information and the second conduction information to the master control assembly, the master control assembly sends the received first conduction information and the received second conduction information to the data transmission module, and the data transmission module sends the first conduction information and the second conduction information to the station end system;

and under the condition that the first contact is not in contact with the first electrode and/or under the condition that the second contact is not in contact with the second electrode, the station end system sends alarm information.

8. The charging system of claim 7, wherein the master control assembly is electrically connected to the data transmission module;

the main control assembly is used for transmitting the battery data to the data transmission module, the data transmission module is used for sending the battery data to the station end system, and the station end system is used for determining whether to charge the first battery pack assembly and the second battery pack assembly according to the battery data.

9. The charging system of any one of claims 1-8, wherein the main control assembly is electrically connected to the control module via a CAN bus.

10. The charging system of any of claims 1-8, wherein the first battery pack assembly comprises a first battery pack assembly, a first temperature sensor, and a first battery cell monitoring controller, the first temperature sensor and the first battery cell monitoring controller are both connected to the first battery cell assembly, and the first temperature sensor and the first battery cell monitoring controller are both electrically connected to the main control assembly, the first battery cell monitoring controller is configured to monitor a voltage of the first battery cell assembly, and the first temperature sensor is configured to monitor a temperature of the first battery cell assembly;

the second battery pack assembly comprises a second battery core assembly, a second temperature sensor and a second battery core monitoring controller, the second temperature sensor and the second battery core monitoring controller are all connected with the second battery core assembly, the second temperature sensor and the second battery core monitoring controller are all electrically connected with the main control assembly, the second battery core monitoring controller is used for monitoring the voltage of the second battery core assembly, and the second temperature sensor is used for monitoring the temperature of the second battery core assembly.

Technical Field

The application relates to the technical field of electric automobiles, in particular to a charging system.

Background

With the progress of science and technology, the application of electric vehicles is more and more popular, at present, when the first battery box and the second battery box are arranged in the electric vehicle, and when the first battery box and the second battery box are replaced, the replaced insufficient-power battery box is generally charged by adopting a box-dividing charging system, namely, two chargers respectively charge the first battery box and the second battery box separately at set rated voltage. After charging is finished, the voltage, the temperature and the electric quantity of the two battery boxes may be inconsistent, and the safety risk of the electric automobile during running is increased.

Content of application

The embodiment of the application provides a charging system, can solve when charging for two battery boxes of electric automobile, two chargers all charge for two battery boxes separately with the rated voltage who sets for respectively, nevertheless after charging, the voltage, temperature, the electric quantity of two battery boxes probably are inconsistent, lead to the great problem of safety risk when electric automobile traveles.

In order to solve the technical problem, the present application is implemented as follows:

an embodiment of the present application provides a charging system, the charging system includes: the battery charger comprises a first battery box, a second battery box, a charger box and a control cabinet;

the first battery box is provided with a first battery pack assembly and a main control assembly, and the first battery pack assembly is electrically connected with the main control assembly; a second battery pack assembly is arranged in the second battery box and is electrically connected with the main control assembly;

the charger box is provided with a charging module and a control module, the main control assembly is electrically connected with the control module, and the charging module is electrically connected with the control module; a slave control assembly, a first control switch and a second control switch are arranged in the control cabinet, and the master control assembly is electrically connected with the slave control assembly; the first control switch and the second control switch are electrically connected with the slave control assembly, the first battery pack assembly is electrically connected with the charging module through the first control switch, and the second battery pack assembly is electrically connected with the charging module through the second control switch;

the main control assembly is used for acquiring battery data of the first battery pack assembly and the second battery pack assembly, determining first power supply information of the first battery pack assembly and the second battery pack assembly according to the battery data, and sending the first power supply information to the control module so that the control module can control the charging module to output target voltage according to the first power supply information, and the main control assembly sends an instruction to the slave control assembly so that the slave control assembly controls the first control switch and the second control switch to be in a conducting state.

Optionally, a first cooling assembly is further disposed in the first battery box, and the first cooling assembly is electrically connected with the main control assembly;

a second cooling assembly is further arranged in the second battery box and electrically connected with the main control assembly;

the main control assembly is used for controlling the first cooling assembly and the second cooling assembly so that the first cooling assembly and the second cooling assembly respectively control the temperature of the first battery pack assembly and the temperature of the second battery pack assembly in the charging process.

Optionally, a power module is further arranged in the charger box, and the power module is electrically connected with the control module;

the power supply module is electrically connected with the master control assembly, the slave control assembly, the first cooling assembly and the second cooling assembly respectively;

the power module is used for providing electric energy for the master control assembly, the slave control assembly, the first cooling assembly and the second cooling assembly so as to enable the master control assembly, the slave control assembly, the first cooling assembly and the second cooling assembly to operate.

Optionally, the slave control assembly is further configured to monitor second power information of the first control switch and the second control switch in real time, and feed back the second power information to the master control assembly, so that the master control assembly adjusts the first power information in real time according to the second power information and the battery data.

Optionally, the charging system further includes a control switch, a first end of the control switch is electrically connected to the power module, and a second end of the control switch is electrically connected to the master control assembly, the slave control assembly, the first cooling assembly, and the second cooling assembly, respectively;

the control end of the control switch is electrically connected with the control module, and the control module is used for controlling the on/off of the control switch.

Optionally, the charging system further comprises a first battery compartment and a second battery compartment;

a first contact is arranged on the first battery box, a first electrode is arranged in the first battery compartment, and the first contact is matched with the first electrode;

a second contact is arranged on the second battery box, a second electrode is arranged in the second battery compartment, and the second contact is matched with the second electrode;

the slave control assembly is electrically connected with the first electrode and the second electrode respectively, and is used for acquiring first conduction information on the first electrode and second conduction information on the second electrode so as to determine whether the first contact is in contact with the first electrode or not and whether the second contact is in contact with the second electrode or not.

Optionally, a data transmission module is further arranged in the charger box;

the data transmission module is electrically connected with the master control assembly, the slave control assembly is used for sending the first conduction information and the second conduction information to the master control assembly, the master control assembly sends the received first conduction information and the received second conduction information to the data transmission module, and the data transmission module sends the first conduction information and the second conduction information to the station end system;

and under the condition that the first contact is not in contact with the first electrode and/or under the condition that the second contact is not in contact with the second electrode, the station end system sends alarm information.

Optionally, the main control assembly is electrically connected with the data transmission module;

the main control assembly is used for transmitting the battery data to the data transmission module, the data transmission module is used for sending the battery data to the station end system, and the station end system is used for determining whether to charge the first battery pack assembly and the second battery pack assembly according to the battery data.

Optionally, the main control assembly is electrically connected with the control module through a CAN bus.

Optionally, the first battery pack assembly includes a first battery core assembly, a first temperature sensor and a first battery core monitoring controller, the first temperature sensor and the first battery core monitoring controller are both connected to the first battery core assembly, and are both electrically connected to the main control assembly, the first battery core monitoring controller is configured to monitor a voltage of the first battery core assembly, and the first temperature sensor is configured to monitor a temperature of the first battery core assembly;

the second battery pack assembly comprises a second battery core assembly, a second temperature sensor and a second battery core monitoring controller, the second temperature sensor and the second battery core monitoring controller are all connected with the second battery core assembly, the second temperature sensor and the second battery core monitoring controller are all electrically connected with the main control assembly, the second battery core monitoring controller is used for monitoring the voltage of the second battery core assembly, and the second temperature sensor is used for monitoring the temperature of the second battery core assembly.

In this application embodiment, be provided with first battery package subassembly and main control assembly in the first battery case, first battery package subassembly with main control assembly electricity is connected, be provided with second battery package subassembly in the second battery case, second battery package subassembly with main control assembly electricity is connected. Be provided with from control assembly, first control switch and second control switch in the control cabinet, first control switch and second control switch all with from the control assembly electricity and connect, first battery package subassembly passes through first control switch with the module electricity that charges is connected, second battery package subassembly passes through second control switch with the module electricity that charges is connected. Therefore, in the process of replacing the batteries for the two battery boxes of the electric automobile, the main control assembly can control the auxiliary control assembly through the electric signals, so that the voltages and the temperatures of the two battery boxes after charging are kept consistent, and the safety risk of the electric automobile in the driving process is reduced.

Drawings

Fig. 1 shows a schematic diagram of a charging system according to an embodiment of the present disclosure.

Reference numerals:

10: a charging box; 20: a control cabinet; 30: a first battery box; 40: a second battery box; 11: a data transmission module; 12: a control module; 13: a power supply module; 14: a charging module; 21: a slave control component; 22: a first control switch; 23: a second control switch; 31: a main control assembly; 32: a first cooling assembly; 33: a first battery pack assembly; 41: a second cooling assembly; 42: a second battery pack assembly; 131: and controlling the switch.

Detailed Description

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

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Before explaining the charging system provided by the embodiment of the present application, an application scenario of the charging system provided by the embodiment of the present application is specifically explained: in the related art, an electric vehicle has a first battery box and a second battery box, and when a battery is replaced for the first battery box and the second battery box, a split charging system is usually adopted to charge the replaced power-loss battery box, that is, two chargers respectively charge the first battery box and the second battery box at a set rated voltage, and the chargers cannot simultaneously obtain battery information (voltage, temperature, and the like) of the two battery boxes. Even if the resistances of the two battery boxes are consistent, the temperature of the battery boxes during charging can affect the actual resistances of the battery boxes, which can cause the problem that the voltages of the two battery boxes may not be consistent after the charging is finished. Therefore, when the electric automobile runs, the two parallel battery boxes can have the phenomenon that the battery box with higher voltage charges the battery box with lower voltage, and when the current is too large, the fuse in the battery box can be blown and even the battery pack can be damaged, so that the service life of the battery box is shortened, the maintenance cost of the battery box is increased, and the safety risk of the electric automobile in the running process is increased.

Referring to fig. 1, a schematic diagram of a charging system provided in an embodiment of the present application is shown, and as shown in fig. 1, the charging system includes: a first battery box 30, a second battery box 40, a charger box 10 and a control cabinet 20. The first battery box 30 is provided with a first battery pack assembly 33 and a main control assembly 31, the first battery pack assembly 33 is electrically connected with the main control assembly 31, the second battery box 40 is provided with a second battery pack assembly 42, and the second battery pack assembly 42 is electrically connected with the main control assembly 31.

The charging box 10 is provided with a charging module 14 and a control module 12, the main control assembly 31 is electrically connected with the control module 12, and the charging module 14 is electrically connected with the control module 12. The control cabinet 20 is provided with a slave control assembly 21, a first control switch 22 and a second control switch 23, and the master control assembly 31 is electrically connected with the slave control assembly 21; the first control switch 22 and the second control switch 23 are both electrically connected to the slave control module 21, the first battery pack assembly 33 is electrically connected to the charging module 14 through the first control switch 22, and the second battery pack assembly 42 is electrically connected to the charging module 14 through the second control switch 23.

The master control module 31 is configured to obtain battery data of the first battery pack assembly 33 and the second battery pack assembly 42, determine first power information of the first battery pack assembly 33 and the second battery pack assembly 42 according to the battery data, send the first power information to the control module 12, so that the control module 12 controls the charging module 14 to output a target voltage according to the first power information, and send an instruction to the slave control module 21 by the master control module 31, so that the slave control module 21 controls the first control switch 22 and the second control switch 23 to be in a conducting state.

In the embodiment, since the first battery pack assembly 33 and the main control assembly 31 are disposed in the first battery box 30, the second battery pack assembly 42 is disposed in the second battery box 40, and both the first battery pack assembly 33 and the second battery pack assembly 42 are electrically connected to the main control assembly 31, the main control assembly 31 can simultaneously connect the first battery pack assembly 33 and the second battery pack assembly 42.

Because the charging module 14 and the control module 12 are arranged in the charging cabinet 10, the main control component 31 is electrically connected with the control module 12, and the charging module 14 is electrically connected with the control module 12, the main control component 31 can send the charging requirement information to the control module 12, and the control module 12 controls the charging module 14 according to the charging requirement information. Since the slave control assembly 21, the first control switch 22 and the second control switch 23 are disposed in the control cabinet 20, the first control switch 22 and the second control switch 23 are both electrically connected to the slave control assembly 21, the first battery pack assembly 33 is electrically connected to the charging module 14 through the first control switch 22, and the second battery pack assembly 42 is electrically connected to the charging module 14 through the second control switch 23. Therefore, the first control switch 22 and the second control switch 23 can be controlled by the control module 21, the charging module 14 is connected with the first battery pack assembly 33 and the second battery pack assembly 42 at the same time, and the first battery pack assembly 33 and the second battery pack assembly 42 are connected in parallel. In addition, since the master control unit 31 is electrically connected to the slave control unit 21, the master control unit 31 transmits a command to the slave control unit 21 to transmit information, and the slave control unit 21 may feed back information to the master control unit 31.

Since the main control component 31 can simultaneously connect the first and second battery pack assemblies 33 and 42, the main control component 31 can acquire battery data of the first and second battery pack assemblies 33 and 42, wherein the battery data includes voltage, temperature, battery remaining capacity (State of Charge, SOC), battery Health (State of Health, SOH), and the like. In addition, the main control unit 31 may determine first power information of the first battery pack assembly 33 and the second battery pack assembly 42 based on the battery data, wherein, based on experimental data during the charging of the first and second pack assemblies 33 and 42 (the experimental data including the charging voltage, the voltage and temperature of the first pack assembly 33, and the voltage and temperature of the second pack assembly 42, etc.), the main control module 31 is provided with an information look-up table in advance, in which the voltage and temperature of the first battery pack assembly 33 and the voltage and temperature of the second battery pack assembly 42 can be used to look up the corresponding charging voltage, therefore, the main control assembly 31 can determine from the acquired voltage and temperature of the first battery pack assembly 33 and the voltage and temperature of the second battery pack assembly 42, the corresponding first power information, which is the charging voltage of the first battery pack assembly 33 and the second battery pack assembly 42, is found in the information look-up table.

The main control module 31 may transmit the first power information to the control module 12, so that the control module 12 controls the charging module 14 to output the target voltage according to the first power information, and outputs the target voltage on the first battery pack assembly 33 and the second battery pack assembly 42. The master control unit 31 may send a command to the slave control unit 21 so that the slave control unit 21 controls the first control switch 22 and the second control switch 23 to be closed, and the charging system is turned on. Therefore, in the embodiment, the master control assembly 31 can control the slave control assembly 21 through the electric signal, so that the voltage and the temperature of the two battery boxes after the charging are kept consistent, and the safety risk of the electric vehicle in the driving process is reduced.

It should be noted that, in the embodiment of the present application, at present, an electric vehicle is generally provided with two battery boxes, that is, the first battery box 30 and the second battery box 40, and with the development of the electric vehicle industry and the improvement of the energy storage requirement of the electric vehicle battery, a third battery box, a fourth battery box … … to an nth battery box (N ≧ 2) may be further added to the charging system.

In addition, the main control component 31 may obtain the first power information from the information comparison table, and may also set a computer algorithm for determining the first power information on a built-in chip of the main control component 31, and of course, the main control component 31 may also determine the first power information in other manners, which is not limited herein in this embodiment of the present application.

In the embodiment of the present application, a first cooling assembly 32 is further disposed in the first battery box 30, and the first cooling assembly 32 is electrically connected to the main control assembly 31. A second cooling module 41 is further provided in the second battery box 40, and the second cooling module 41 is electrically connected to the main control module 31. The main control unit 31 is configured to control the first cooling unit 32 and the second cooling unit 41 such that the first cooling unit 32 and the second cooling unit 41 perform temperature control on the first battery pack assembly 33 and the second battery pack assembly 42, respectively, during charging.

Since the main control unit 31 can acquire the battery data of the first battery pack assembly 33 and the second battery pack assembly 42, the battery data includes the temperature. In the charging process, when the temperatures of the first battery pack assembly 33 and the second battery pack assembly 42 acquired by the main control assembly 31 are different, the first cooling assembly 32 may control the temperatures of the first battery pack assembly 33 and the second battery pack assembly 42, respectively, and the temperatures of the first battery pack assembly 33 and the second battery pack assembly 42 may be kept consistent.

It should be noted that the first cooling assembly 32 and the second cooling assembly 41 may be a refrigerator, a condenser, an evaporator, and the like, and the embodiment of the present application is not limited herein.

In the embodiment of the application, the charger box 10 is further provided with a power module 13, and the power module 13 is electrically connected with the control module 12; the power module 13 is electrically connected to the master control module 31, the slave control module 21, the first cooling module 32, and the second cooling module 41, respectively; the power module 13 is used for supplying power to the master control assembly 31, the slave control assembly 21, the first cooling assembly 32 and the second cooling assembly 41 so as to operate the master control assembly 31, the slave control assembly 21, the first cooling assembly 32 and the second cooling assembly 41.

Because the power module 13 is electrically connected to the control module 12, and the power module 13 is also electrically connected to the master control assembly 31, the slave control assembly 21, the first cooling assembly 32, and the second cooling assembly 41, respectively, the control module 12 can control the power module 13 to supply power to the master control assembly 31, the slave control assembly 21, the first cooling assembly 32, and the second cooling assembly 41, so that the power supply of the master control assembly 31, the slave control assembly 21, the first cooling assembly 32, and the second cooling assembly 41 can be ensured during the operation of the charging system.

In the embodiment of the present application, the slave control module 21 is further configured to monitor the second power information of the first control switch 22 and the second control switch 23 in real time, and feed back the second power information to the master control module 31, so that the master control module 31 adjusts the first power information in real time according to the second power information and the battery data.

Since the slave control module 21 is further configured to monitor second power information of the first control switch 22 and the second control switch 23 in real time, and feed back the second power information to the master control module 31, where the first control switch 22 is connected in parallel with the second control switch 23, and the second power information includes respective current and parallel voltage in two lines after the first control switch 22 and the second control switch 23 are turned on. Also, since the first control switch 22 is connected in series with the first battery pack assembly 33 and the second control switch 23 is connected in series with the second battery pack assembly 42, the actual current and parallel voltage of the first battery pack assembly 33 and the second battery pack assembly 42 during charging are monitored in real time from the control assembly 21, and the actual current and parallel voltage information of the first battery pack assembly 33 and the second battery pack assembly 42 during charging is transmitted to the main control assembly 31.

The control module 12 controls the charging module 14 to output the target voltage according to the first power information, because the charging module 14 in the charging box 10 has aging problem, the target voltage output by the charging module 14 and the voltage in the first power information may have inconsistency problem, the slave control module 21 monitors the parallel charging voltage (the second power information) of the first battery pack assembly 33 and the second battery pack assembly 42 in real time, after feeding back to the master control module 31, the main control unit 31 acquires the temperature, voltage (battery data) and second power supply information of the first battery pack assembly 33 and the second battery pack assembly 42, compares and corrects the temperature, voltage and charging voltage of the first battery pack assembly 33 and the second battery pack assembly 42 set on the information comparison table, and outputs the corrected first power supply information, therefore, the main control component 31 can adjust the first power information in real time according to the second power information and the battery data. That is, the second power information is fed back from the control module 21 to the main control module 31, so that the main control module 31 can control the temperature and the voltage of the first battery pack module 33 and the second battery pack module 42, the consistency of the temperature and the voltage of the first battery pack module 33 and the second battery pack module 42 can be ensured in real time, and the accuracy of the charging voltage of the first battery pack module 33 and the second battery pack module 42 can be ensured.

It should be noted that the master control module 31 and the slave control module 21 may be both BMS battery management systems, and the master control module 31 and the slave control module 21 may also be other systems or modules; the slave control module 21 may monitor voltages of the first battery pack assembly 33 and the second battery pack assembly 42 through an HVD voltage monitoring relay, monitor currents of the first battery pack assembly 33 and the second battery pack assembly 42 through a hall current sensor, and may also monitor the slave control module 21 through other types of voltage and current monitoring devices, which is not limited herein.

When the charging module 14 is damaged and the control component 21 monitors that the current in the first battery pack assembly 33 is larger than the rated current of the first battery pack assembly 33, the control component 21 can control the first control switch 22 to be switched off; when the current in the second battery pack assembly 42 is greater than the rated current of the second battery pack assembly 42, the slave control assembly 21 may control the second control switch 23 to be turned off to ensure that the first battery box 30 and the second battery box 40 are not damaged.

When the voltages in the battery data of the first battery pack assembly 33 and the second battery pack assembly 42 acquired by the main control assembly 31 both reach the rated voltage, the main control assembly 31 sends a command to the slave control assembly 21 to finish charging, and after receiving the command from the slave control assembly 21, the first control switch 22 and the second control switch 23 are turned off, and the charging module 14 stops charging the first battery pack assembly 33 and the second battery pack assembly 42.

In addition, in some embodiments, at a certain time during the charging process, when the main control component 31 obtains that the charging voltage of a certain battery pack assembly is relatively large and the charging is too fast, a series voltage-dividing resistor may also be provided for the battery pack assembly with the relatively large charging voltage, for example: when the rated voltage is 60v, at a certain time in the charging process, the charging voltage of the first battery pack assembly 33 is 51.6v, the charging voltage of the second battery pack assembly 42 is 51v, a switch may be arranged between the first battery pack assembly 33 and the series resistor, and when the main control assembly 31 acquires the voltages of the first battery pack assembly 33 and the second battery pack assembly 42, the main control assembly 31 may close the switch to divide the voltage of the series resistor of the first battery pack assembly 33, so as to ensure the consistency of the voltages of the first battery pack assembly 33 and the second battery pack assembly 42.

In the embodiment of the present application, the charging system further includes a control switch, a first end of the control switch is electrically connected to the power module 13, and a second end of the control switch is electrically connected to the master control assembly 31, the slave control assembly 21, the first cooling assembly 32, and the second cooling assembly 41 respectively; the control end of the control switch is electrically connected with the control module 12, and the control module 12 is used for controlling the on/off of the control switch.

Because the charging system further comprises a control switch, a first end of the control switch is electrically connected with the power module 13, a second end of the control switch is electrically connected with the master control assembly 31, the slave control assembly 21, the first cooling assembly 32 and the second cooling assembly 41 respectively, and a control end of the control switch is electrically connected with the control module 12, after the control module 12 receives a charging instruction, the control switch can be controlled to be closed to form a circuit, so that the master control assembly 31, the slave control assembly 21, the first cooling assembly 32 and the second cooling assembly 41 are charged.

It should be noted that the control switch may be an electromagnetic relay, and the control switch may also be a contactor, a universal transfer switch, and the like, which is not limited herein in the embodiments of the present application.

In an embodiment of the present application, the charging system further includes a first battery compartment and a second battery compartment; a first contact is arranged on the first battery box 30, a first electrode is arranged in the first battery compartment, and the first contact is matched with the first electrode; a second contact is arranged on the second battery box 40, a second electrode is arranged in the second battery compartment, and the second contact is matched with the second electrode; the slave control component 21 is electrically connected to the first electrode and the second electrode, and the slave control component 21 is configured to obtain first conduction information on the first electrode and second conduction information on the second electrode to determine whether the first contact is in contact with the first electrode or not and whether the second contact is in contact with the second electrode or not.

The charging system further comprises a first battery compartment and a second battery compartment, the first battery compartment and the second battery compartment can be used for placing a first battery box 30 and a second battery box 40, a first contact is arranged on the first battery box 30, a first electrode is arranged in the first battery compartment, the first contact can be aligned with the first electrode in a matching mode, a second contact is arranged on the second battery box 40, a second electrode is arranged in the second battery compartment, and the second contact can be aligned with the second electrode in a matching mode. When the control switch is turned on, the power module 13 supplies power to the master control component 31, the slave control component 21, the first cooling component 32 and the second cooling component 41, that is, after the master control component 31 is awakened, at this time, the slave control component 21 is electrically connected to the first electrode and the second electrode, the slave control component 21 can acquire first conduction information on the first electrode and second conduction information on the second electrode, and whether the first contact and the first electrode, and the second contact and the second electrode are in good contact or not is determined by the first conduction information on the first electrode and the second conduction information on the second electrode. When the slave control module 21 determines that the first contact is in good contact with the first electrode and the second contact is in good contact with the second electrode, that is, the lines between the first battery compartment and the first battery box 30 and between the second battery compartment and the second battery box 40 are conducted, the master control module 31 will start to acquire the battery data of the first battery pack assembly 33 and the second battery pack assembly 42.

It should be noted that the first conduction information and the second conduction information may be resistances, that is, the slave control module 21 may determine whether the lines between the first battery compartment and the first battery box 30 and between the second battery compartment and the second battery box 40 are conducted by respectively obtaining the resistances of the first battery compartment and the first battery box 30 and between the second battery compartment and the second battery box 40. In addition, the first conduction information and the second conduction information may also be voltages, which is not limited herein in this embodiment of the application.

In the embodiment of the application, the charger box 10 is further provided with a data transmission module 11; the data transmission module 11 is electrically connected with the master control assembly 31, the slave control assembly 21 is configured to send the first conduction information and the second conduction information to the master control assembly 31, the master control assembly 31 sends the received first conduction information and the received second conduction information to the data transmission module 11, and the data transmission module 11 sends the first conduction information and the second conduction information to the station-side system; and under the condition that the first contact is not in contact with the first electrode and/or under the condition that the second contact is not in contact with the second electrode, the station-side system sends alarm information.

Because the charging box 10 is further provided with the data transmission module 11, the data transmission module 11 is electrically connected with the main control assembly 31, and the main control assembly 31 can send the first conduction information and the second conduction information to the station end system through the data transmission module 11. When the slave control module 21 determines that the first contact and the first electrode and/or the second contact and the second electrode are not in contact, that is, the first battery compartment and the first battery box 30 and/or the second battery compartment and the second battery box 40 are disconnected, the slave control module 21 may further send the information that the connection between the first battery compartment and the first battery box 30 and/or the connection between the second battery compartment and the second battery box 40 fails to the master control module 31, the master control module 31 sends the information that the connection between the first battery compartment and the first battery box 30 and/or the connection between the second battery compartment and the second battery box 40 fails to the data transmission module 11, the data transmission module 11 sends the information that the connection fails to the station side system, and the station side system sends alarm information after receiving the information that the connection fails. According to the alarm information sent by the system and the first conduction information and the second conduction information acquired from the control assembly 21, the worker can manually intervene between the first battery compartment and the first battery box 30 and/or between the second battery compartment and the second battery box 40 to manually connect the first battery compartment and the first battery box and/or the second battery box.

It should be noted that the station-side system includes a controller, and the controller may be a computer or a workstation, and the embodiment of the present application is not limited herein.

In the embodiment of the present application, the main control assembly 31 is electrically connected to the data transmission module 11; the main control module 31 is configured to transmit the battery data to the data transmission module 11, the data transmission module 11 is configured to send the battery data to the station-side system, and the station-side system is configured to determine whether to charge the first battery pack assembly 33 and the second battery pack assembly 42 according to the battery data.

Since the main control module 31 is electrically connected to the data transmission module 11, during the charging process, the main control module 31 can transmit the battery data to the data transmission module 11, and the data transmission module 11 can transmit the battery data to the station-side system. After charging is completed, when the first battery box 30 is still placed in the first battery compartment and the second battery box 40 is still placed in the second battery compartment, the main control component 31 further continues to acquire battery data of the first battery pack component 33 and the second battery pack component 42 in real time, and when the main control component 31 acquires that the voltage difference value in the battery data of the first battery pack component 33 and the second battery pack component 42 is greater than the first difference value, the charging module 14 charges the battery pack component with the smaller voltage value; wherein the first difference value is determined according to the voltage specification of the first and second battery pack assemblies 33 and 42. When the ratio (percentage) of the attenuated voltage of the first battery pack assembly 33 to the rated voltage is smaller than the first threshold, the charging module 14 charges the first battery pack assembly 33; when the ratio (percentage) of the attenuated voltage of the second battery pack assembly 42 to the rated voltage is smaller than the first threshold, the charging module 14 charges the second battery pack assembly 42; wherein, the first threshold value is set according to specific conditions. In the above steps, the main control module 31 determines whether the first battery pack assembly 33 and/or the second battery pack assembly 42 needs to be charged, and then sends the charging signal to the data transmission module 11, and uploads the charging signal to the station side system through the data transmission module 11, the station side system receives the charging signal and intervenes in time, and sends the charging instruction to the control module 12, and after the control module 12 closes the control switch, the main control module 31 and the slave control module 21 are waken up, so that the charging module 14 performs a recharging operation on the first battery pack assembly 33 and/or the second battery pack assembly 42.

It should be noted that, the first difference may be 3v, and the first threshold may be 80%; the first difference may be 5v, the first threshold may be 70%; the first difference may also be 4.1v and the first threshold may also be 75%. The embodiments of the present application are not limited herein.

In addition, in the embodiment of the present application, the station-side system may be further connected to a device for transporting batteries, and the station-side system may control the device for transporting batteries to transport the first battery box 30 and the second battery box 40. In practical application, when the first battery box 30 and the second battery box 40 need to be charged, the station-side system may issue a power conversion start instruction to a device for carrying batteries, and after the device for carrying batteries receives the instruction, the first battery box 30 and the second battery box 40 are detached from the automobile, the first battery box 30 is placed in the first battery compartment, and the second battery box 40 is placed in the second battery compartment. Of course, the first battery box 30 and the second battery box 40 may also be manually replaced, and the embodiment of the present application is not limited herein.

The first battery compartment and the second battery compartment may further be provided with sensors, when the first battery box 30 is placed in the first battery compartment and the second battery box 40 is placed in the second battery compartment, the sensors may sense the first battery box 30 and the second battery box 40 and send an arrival instruction to the station end system, the station end system may further be electrically connected to the control module 12 and send a charging start instruction to the control module 12, the control module 12 enables the power module 13 to supply power to the main control assembly 31, and after the main control assembly 31 is awakened, the battery data of the first battery pack assembly 33 and the second battery pack assembly 42 starts to be acquired.

In addition, before the station-side system sends a battery replacement command to the control module 12, the main control component 31 and the data transmission module 11 are connected all the time, and the data transmission module 11 uploads the battery data of the first battery pack component 33 and the second battery pack component 42, which are acquired by the main control component 31 in real time, to the station-side system, so that the charging system monitors and manages the whole life cycle of the first battery box 30 and the second battery box 40 in the battery replacement station, wherein the life cycle refers to a period of time from when the first battery box 30 is placed into the first battery compartment, when the second battery box 40 is placed into the second battery compartment, and when the charging system starts to charge, until the first battery box 30 is taken out of the first battery compartment and when the second battery box 40 is taken out of the second battery compartment.

When the station end system sends a power change instruction to the control module 12, the control module 12 controls the control switch to be switched off, so that the power module 13 stops supplying power to the main control assembly 31. The main control module 31 stops acquiring the battery data of the first battery pack assembly 33 and the second battery pack assembly 42 and uploads the battery data to the data transmission module 11, and at the same time, the data transmission module 11 may upload a power supply line cut-off completion signal of the power supply module 13 to the station system.

In the embodiment of the present application, the main control assembly 31 is electrically connected to the control module 12 through a CAN bus.

Because the main control assembly 31 is electrically connected with the control module 12 through the CAN bus, the main control assembly 31 CAN be in signal communication with the control module 12, the station-side system CAN send a charging start instruction to the control module 12 of the charger box 10, the control module 12 closes the control switch after receiving the charging start instruction, and at this time, the power module 13 in the charger box 10 CAN charge the main control assembly 31.

It should be noted that, the main control component 31 and the control module 12 may also be electrically connected through Ethernet (Ethernet), Wi-Fi or Bluetooth (Bluetooth), and the embodiment of the present application is not limited herein.

In this embodiment, the first battery pack assembly 33 includes a first battery core assembly, a first temperature sensor and a first battery core monitoring controller, the first temperature sensor and the first battery core monitoring controller are both connected to the first battery core assembly, and are both electrically connected to the main control assembly 31, the first battery core monitoring controller is configured to monitor a voltage of the first battery core assembly, and the first temperature sensor is configured to monitor a temperature of the first battery core assembly; the second battery pack assembly 42 comprises a second battery core assembly, a second temperature sensor and a second battery core monitoring controller, the second temperature sensor and the second battery core monitoring controller are both connected with the second battery core assembly, the second temperature sensor and the second battery core monitoring controller are both electrically connected with the main control assembly 31, the second battery core monitoring controller is used for monitoring the voltage of the second battery core assembly, and the second temperature sensor is used for monitoring the temperature of the second battery core assembly.

Since the first battery pack assembly 33 includes the first cell assembly, the first temperature sensor, and the first cell monitoring controller; the second battery pack assembly 42 includes a second cell assembly, a second temperature sensor, and a second cell monitoring controller; wherein, first electric core subassembly and second electric core subassembly all include a plurality of electricity core. When the first cell monitoring controller is connected with the first cell assembly and the second cell monitoring controller is connected with the second cell assembly, the first cell monitoring controller can monitor the voltage of the first cell assembly, and the second cell monitoring controller can monitor the voltage of the second cell assembly. Because the first cell monitoring controller and the second cell monitoring controller are electrically connected to the main control assembly 31, respectively, the main control assembly 31 can obtain the voltages of the first cell assembly and the second cell assembly.

When the first cooling module 32 and the second cooling module 41 are both refrigerators, the first cooling module 32 may be a cooling water pipe wrapped around the outer surface of the first battery pack assembly 33, and the second cooling module 41 may be a cooling water pipe wrapped around the outer surface of the second battery pack assembly 42. At the moment, the first temperature sensor is respectively arranged on the water inlet and the water outlet of the cooling water pipe on the outer surface of the first cell assembly, and the second temperature sensor is respectively arranged on the water inlet and the water outlet of the cooling water pipe on the outer surface of the second cell assembly. Thus, a first temperature sensor may monitor the temperature at the inlet and outlet of first cooling assembly 32 of the first cartridge assembly, respectively, and a second temperature sensor may monitor the temperature at the inlet and outlet of second cooling assembly 41 of the second cartridge assembly, respectively.

Since the first temperature sensor and the second temperature sensor are electrically connected to the main control assembly 31, the main control assembly 31 can acquire the temperature of the water inlet and the water outlet of the first cooling assembly 32 of the first cell assembly monitored by the first temperature sensor and the temperature of the water inlet and the water outlet of the second cooling assembly 41 of the second cell assembly monitored by the second temperature sensor, respectively. Therefore, no matter in the charging state or the discharging state, the main control assembly 31 can control the temperatures of the first cell assembly and the second cell assembly according to the acquired data, and the temperature consistency of the first cell assembly and the second cell assembly is maintained.

The first temperature sensor and the second temperature sensor may be a thermocouple sensor, a thermistor sensor, a digital temperature sensor, or the like, but the embodiments of the present application are not limited thereto.

In the embodiment of the present application, the first battery box 30 is provided with a first battery pack assembly 33 and a main control assembly 31, the first battery pack assembly 33 is electrically connected to the main control assembly 31, the second battery box 40 is provided with a second battery pack assembly 42, and the second battery pack assembly 42 is electrically connected to the main control assembly 31. A slave control assembly 21, a first control switch 22 and a second control switch 23 are disposed in the control cabinet 20, the first control switch 22 and the second control switch 23 are electrically connected to the slave control assembly 21, the first battery pack assembly 33 is electrically connected to the charging module 14 through the first control switch 22, and the second battery pack assembly 42 is electrically connected to the charging module 14 through the second control switch 23. Therefore, in the process of replacing the batteries of the two battery boxes of the electric automobile, the main control assembly 31 can control the slave control assembly 21 through the electric signal, so that the voltages and the temperatures of the two battery boxes after the charging are kept consistent, and the safety risk of the electric automobile in the driving process is reduced.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

While alternative embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the true scope of the embodiments of the application.

Finally, it should also be noted that, in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or terminal apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or terminal apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or terminal device comprising the element.

The technical solutions provided in the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, and meanwhile, for a person of ordinary skill in the art, according to the principles and implementation manners of the present application, changes may be made in the specific embodiments and application ranges.