Charger

Abstract

The utility model provides a charger, and belongs to the technical field of chargers, and the charger comprises a charger main body, the charger main body is provided with a charging seat, the charging seat is provided with a charging interface and a discharging interface, and the charger main body is internally provided with a micro-control unit; wherein the output switch state end, the output switch control end, the voltage sampling end and the current sampling end are all connected with the first direct current output end, the first auxiliary power supply end is connected with the BMS auxiliary power supply control end, the first charging CAN is connected with the BMS CAN, the low-voltage power supply terminal is connected with the low-voltage power supply control end, and the discharging CAN and the fire extinguishing CAN are both connected with the discharging / fire extinguishing CAN. Generally, a charger in the battery swap station does not need to be connected with a discharge interface of the battery box. The charger is improved to realize connection between the charging seat and the discharging interface of the battery box, so that more battery information, battery fire extinguishing information and the like are acquired through the CAN communication line, the cooling device is directly controlled by the charger, and more comprehensive monitoring and management on the battery box are realized by matching with a control program of the charger.

Description

Technical Field

[0001] The present application belongs to the technical field of chargers, and more specifically, relates to a charger. Background Art

[0002] Charging and battery swapping stations are energy stations that charge and quickly swap power batteries for electric vehicles. To meet the varying energy needs of electric vehicles, they can replenish their energy through charging or battery swapping. For example, utility model patent publication number CN220009523U discloses a charger for battery swapping stations that can charge batteries using a charging gun or charge batteries individually, fulfilling battery swapping needs.

[0003] When charging a battery, an existing charger is only connected to the battery's charging port. Due to the limited number of ports that can be connected to each other, it is difficult for the charger to obtain complete battery status information and adjust the charging status according to the battery status in a timely manner, resulting in damage to the battery. Summary of the Invention

[0004] To address the deficiencies of the prior art, the present invention provides a charger that is connected to both the power-on and discharge interfaces when charging the battery, and enables broader information transmission with the battery pack BMS through the discharge interface, so as to timely regulate the charging power and better protect the battery.

[0005] To achieve the above objectives, the technical solution of the present application provides a charger, including a charger body, the charger body having a charging base, the charging base being provided with a charging interface and a discharge interface for connecting to a discharge port of a battery box, and a microcontroller unit within the charger body, the microcontroller unit having a communication interface, a control / status interface, and a sampling interface, wherein:

[0006] The charging interface includes a first DC output terminal, a first auxiliary power supply terminal, and a first charging CAN;

[0007] The discharge interface includes a low-voltage power supply terminal, a discharge CAN, and a fire extinguishing CAN;

[0008] The sampling interface includes a voltage sampling terminal and a current sampling terminal;

[0009] Communication interfaces include BMS CAN and discharge / fire extinguishing CAN;

[0010] The control / status interface includes the output switch status terminal, the output switch control terminal, the BMS auxiliary power supply control terminal, and the low-voltage power supply control terminal;

[0011] The output switch status terminal, the output switch control terminal, the voltage sampling terminal and the current sampling terminal are all connected to the first DC output terminal, the first auxiliary power supply terminal is connected to the BMS auxiliary power supply control terminal, the first charging CAN is connected to the BMS CAN, the low-voltage power supply terminal is connected to the low-voltage power supply control terminal, and the discharge CAN and the fire extinguishing CAN are both connected to the discharge / fire extinguishing CAN.

[0012] The battery box is placed on the charging station for charging. After the battery box's BMS is activated, the battery box discharge CAN and the battery box fire extinguishing system CAN form a CAN network with the discharge CAN and fire extinguishing CAN. This information is transmitted via the discharge / fire extinguishing CAN to the microcontroller for monitoring. Battery information acquired on the battery box discharge CAN enables a health check of the battery, assessing its aging and performance degradation. Based on this assessment, the charging strategy can be adjusted to optimize battery usage and maintenance plans. Battery fire extinguishing information is acquired from the battery fire extinguishing system CAN. When a battery fire extinguishes, signal feedback is provided to prompt the operator to take timely action. Simultaneously, the microcontroller collects voltage and current information during charging via the voltage and current sampling terminals to monitor the charging status. This configuration of the charging and discharge interfaces effectively enhances the real-time monitoring capabilities of the battery box during charging, facilitating the timely detection of potential safety issues and enabling real-time adjustments to the charging strategy based on the monitoring results.

[0013] Optionally, the charging interface is equipped with a thermistor R1 and a thermistor R2, and the charging interface has a positive pole DC+, a negative pole DC- and a signal line terminal for docking with the battery box; one end of the thermistor R1 and one end of the thermistor R2 are connected to each other and form a pin T-, the other end of the thermistor R1 is provided with a pin T1+, and the other end of the thermistor R2 is provided with a pin T2+; the thermistor R1 is placed in the positive pole DC+, the thermistor R2 is placed in the negative pole DC-, and the pin T-, pin T1+ and pin T2+ are all located at the signal line terminal.

[0014] Thermistors R1 and R2 can monitor the temperature of the charging interface in real time during charging to confirm whether the temperature of the charging connector is normal, and connect to the battery's BMS through the corresponding pins to provide timely feedback of the temperature information.

[0015] Optionally, the charging station is further provided with a cooling device, and the control / status interface has a cooling device control terminal, to which the cooling device is connected. If the charging port temperature detected by thermistors R1 and R2 is too high, the cooling device can be activated to cool the charging port, thereby reducing heat accumulation during charging, maintaining an optimal charging temperature, improving charging efficiency, and protecting the battery.

[0016] Optionally, the cooling device is a fan or a semiconductor cooler.

[0017] Optionally, the charger body is also provided with a charging gun, the interface of the charging gun includes a second DC output terminal, a second auxiliary power supply terminal, a second charging CAN and a second connection status terminal; the output switch status terminal, the output switch control terminal, the voltage sampling terminal and the current sampling terminal are all connected to the second DC output terminal, the second auxiliary power supply terminal is connected to the BMS auxiliary power supply control terminal, the second charging CAN is connected to the BMS CAN, and the second connection status terminal is connected to the connection status port.

[0018] Optionally, the charging interface further includes a charging cradle identification signal terminal and a first connection status terminal; the control / status interface further includes a charging cradle connection identification signal terminal, and the sampling interface further includes a connection status port; the charging cradle identification signal terminal is connected to the charging cradle connection identification signal terminal to identify whether charging is being performed through the charging cradle. The first connection status terminal is connected to the connection status port to monitor the connection status between the battery box and the charging cradle.

[0019] The charger can charge the battery pack via the charging dock or directly charge the vehicle via the charging gun. The output switch status terminal monitors the charging gun's on / off status, while the output switch control terminal controls the charging gun's on / off status. The voltage sampling terminal and current sampling terminal monitor the voltage and current during charging, respectively, facilitating real-time adjustment of the charging strategy. The BMS CAN and the second charging CAN are charging interfaces for implementing the national standard charging protocol.

[0020] Optionally, the charging gun interface also includes a temperature sampling terminal and a gun output status terminal. The sampling interface also includes a temperature sampling port, and the control / status interface also includes a charging gun output status terminal. The temperature sampling terminal is connected to the temperature sampling port to monitor the temperature of the charging gun interface in real time and adjust the charging strategy in a timely manner. The gun output status terminal is connected to the charging gun output status terminal to monitor whether the charging gun output status is normal.

[0021] Optionally, the charger body is provided with a gun base switch, the control / status interface has a gun base switch control terminal, and the gun base switch is connected to the gun base switch control terminal, the charging gun, and the charging base. The user can use the gun base switch to select the charging method as either the charging base or the charging gun.

[0022] Optionally, the system also includes a human-computer interaction module with a display, an emergency stop button, and an indicator light. The communication interface includes a USART port connected to the display. The control / status interface includes an emergency stop button status terminal and an indicator light control terminal, with the emergency stop button connected to the emergency stop button status terminal and the indicator light connected to the indicator light control terminal. During charging, information such as battery voltage, current, charge cycle, and battery temperature can be displayed in real time on the display. An indicator light can be used to alert users of any abnormalities. In an emergency, charging can be interrupted immediately using the emergency stop button.

[0023] Optionally, the communication interface also includes an Ethernet port and an RS485 port, which facilitates connection to external monitoring or networking between charger devices.

[0024] The technical solution of this application has the following advantages over the prior art:

[0025] Typically, the charger in a battery swap station doesn't need to be connected to the battery box's discharge port; it only needs to be connected to the charging port to complete the charging function. By improving the charger to connect to the charging station and the battery box's discharge port, the charger provides the battery box with the necessary low-voltage power supply signal, thereby enabling the acquisition of more battery information, such as battery fire extinguishing information, via the CAN communication line. The cooling device is directly controlled by the charger. In conjunction with the charger's control program, more comprehensive monitoring and management of the battery box is achieved.

[0026] The corresponding configuration of the charging and discharging ports effectively enhances the battery box's real-time monitoring capabilities during charging. This allows for battery health checks, assessing battery aging and performance degradation. Based on these assessments, charging strategies can be adjusted to optimize battery usage and maintenance plans, improving charging efficiency and protecting the battery. Firefighting information can also be monitored, prompting personnel to promptly address fires. The charger features a charging gun and a charging dock, enabling switching between two charging modes. A cooling device reduces heat accumulation during charging, maintaining an optimal charging temperature, improving charging efficiency, and protecting the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is the overall connection structure diagram of the charger;

[0029] Figure 2 It is a structural diagram of thermistor R1 and thermistor R2;

[0030] Figure 3 This is a schematic diagram of the charging base structure.

[0031] Icons: 1. Charging station; 2. Charging port; 3. Discharge port; 4. Positive DC+; 5. Negative DC-; 6. Signal line terminal; 7. Cooling device. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0033] Example:

[0034] This embodiment provides a charger based on Figure 1 and Figure 3 As shown, the charger includes a main body, which includes a charging base 1 provided with a charging interface 2. When a battery pack is placed on the charging base 1, the battery pack docks with the charging interface 2 for charging. The charging base 1 is also provided with a discharge interface 3 for connecting to the discharge port of the battery pack. The charger main body includes a microcontroller (MCU), which has a communication interface, a control / status interface, and a sampling interface. The microcontroller is an MCU. In this embodiment, the MCU model is GD32F450ZGT6, but other models can be selected depending on the actual situation. Specifically, the charging interface 2 includes a first DC output terminal, a first auxiliary power supply terminal, and a first charging CAN. The discharge interface 3 includes a low-voltage power supply terminal, a discharge CAN, and a fire extinguishing CAN. The sampling interface includes a voltage sampling terminal and a current sampling terminal. The communication interface includes a BMS CAN and a discharge / fire extinguishing CAN. The control / status interface includes an output switch status terminal, an output switch control terminal, a BMS auxiliary power supply control terminal, and a low-voltage power supply control terminal. The output switch status terminal, the output switch control terminal, the voltage sampling terminal and the current sampling terminal are all connected to the first DC output terminal, the first auxiliary power supply terminal is connected to the BMS auxiliary power supply control terminal, the first charging CAN is connected to the BMSCAN, the low-voltage power supply terminal is connected to the low-voltage power supply control terminal, and the discharge CAN and the fire extinguishing CAN are both connected to the discharge / fire extinguishing CAN.

[0035] When the battery box is placed on the charging base 1 for charging, it is charged through the first DC output terminal. The output switch status terminal and the output switch control terminal are used to control the switch state of the charging output. The BMS CAN and the first charging CAN are charging interfaces 2 for implementing the national standard charging protocol. The charger exchanges information with the battery box's BMS via the CAN communication line in accordance with the national standard charging protocol to implement the charging function. The BMS auxiliary power supply control terminal provides a wake-up signal to the battery box charging port via the first auxiliary power supply terminal, and the low-voltage power supply control terminal provides a wake-up signal to the battery box discharge port via the low-voltage power supply terminal, so that the battery box's BMS starts working. After the battery box's BMS starts working, the battery box discharge CAN and the battery box fire extinguishing system CAN form a CAN network with the discharge CAN and fire extinguishing CAN, and transmit the data to the microcontroller unit for monitoring via the discharge / fire extinguishing CAN. The voltage sampling point and current sampling terminal sample the charging voltage and current data through the first DC output terminal and transmit them to the microcontroller unit. Through the above configuration, battery health checks can be performed based on battery information acquired via the battery compartment discharge CAN, assessing battery aging and performance degradation. Charging strategies can be adjusted based on the assessment results, optimizing battery usage and maintenance plans. Battery fire extinguishing information can be acquired via the battery fire extinguishing system CAN. When a battery fire extinguishes, signal feedback can be provided to prompt operators to take timely action. The microcontroller collects voltage and current information during charging via the voltage and current sampling terminals to monitor the charging status. The above configuration of the charging interface 2 and discharge interface 3 effectively enhances the real-time monitoring capabilities of the battery compartment during charging, facilitating the timely detection of potential safety issues and enabling real-time adjustment of charging strategies based on monitoring results. Typically, the charger in a battery swap station does not need to be connected to the battery compartment discharge interface 3; it only needs to be connected to the charging interface 2 to complete charging. This application improves the charger to connect to the charging station 1 and the battery compartment discharge interface 3. The charger provides the battery compartment with the necessary low-voltage power supply signal, enabling the acquisition of more battery information, including battery fire extinguishing information, via the CAN communication line. The cooling device 7 is directly controlled by the charger. In conjunction with the charger's control program, more comprehensive monitoring and management of the battery compartment is achieved.

[0036] It should be noted that in the description of this application, "discharge CAN" refers to the CAN bus in the discharge interface 3, while "battery box discharge CAN" is the CAN bus of the BMS inside the battery. Please pay attention to the distinction.

[0037] Further, based on Figure 2 and Figure 3As shown, charging port 2 is equipped with thermistors R1 and R2. Charging port 2 has a positive terminal DC+4, a negative terminal DC-5, and a signal line terminal 6 for connecting to the battery pack. One end of thermistor R1 and one end of thermistor R2 are connected to each other and form a pin T-. The other end of thermistor R1 is provided with a pin T1+, and the other end of thermistor R2 is provided with a pin T2+. Thermistor R1 is placed in the positive terminal DC+4, and thermistor R2 is placed in the negative terminal DC-5. Pins T-, T1+, and T2+ are all located at signal line terminal 6.

[0038] When the battery pack is connected to charging port 2, thermistors R1 and R2 are connected to the battery's BMS via their corresponding pins. Thermistors R1 and R2 monitor the temperature of the positive electrode DC+4 and the negative electrode DC-5, respectively, during charging. This temperature information is promptly fed back to the battery pack's BMS, which then transmits this information to the microcontroller. If the temperature is abnormal, the internal program adjusts the charging strategy to prevent overheating.

[0039] Further, based on Figure 1 and Figure 3 As shown, the charging stand 1 is also provided with a cooling device 7, and the control / status interface has a cooling device 7 control terminal, and the cooling device 7 is connected to the cooling device 7 control terminal. If the temperature of the charging interface 2 detected by the thermistor R1 and thermistor R2 is too high, the microcontroller unit controls the cooling device 7 to turn on through the cooling device 7 control terminal to perform a cooling operation, reduce heat accumulation during the charging process, maintain the optimal charging temperature, improve charging efficiency and protect the battery. If the temperature is still too high after cooling by the cooling device 7, the microcontroller unit can reduce the temperature to a reasonable range by reducing the charging power and other measures. In this embodiment, the cooling device 7 adopts a fan. Of course, the cooling device 7 can also adopt a semiconductor refrigerator.

[0040] Further, based on Figure 1As shown, the charger body is also provided with a charging gun. The user can charge the battery box through the charging seat 1, or directly charge the vehicle through the charging gun. The interface of the charging gun includes a second DC output terminal, a second auxiliary power supply terminal, a second charging CAN and a second connection status terminal. The output switch status terminal, the output switch control terminal, the voltage sampling terminal and the current sampling terminal are all connected to the second DC output terminal, the second auxiliary power supply terminal is connected to the BMS auxiliary power supply control terminal, the second charging CAN is connected to the BMS CAN, and the second connection status terminal is connected to the connection status port. The output switch status terminal is used to monitor the switch status of the charging gun, and the output switch control terminal is used to control the switch of the charging gun. The voltage sampling terminal and the current sampling terminal are respectively used by the microcontroller unit to monitor the voltage and current during the charging process, so as to facilitate real-time adjustment of the charging strategy. The BMS CAN and the second charging CAN are charging interfaces 2 for implementing the national standard charging protocol.

[0041] Further, based on Figure 1 As shown, the charging interface 2 also includes a charging base 1 identification signal terminal and a first connection status terminal. The control / status interface also includes a charging base 1 connection identification signal terminal, and the sampling interface also includes a connection status port. The charging base 1 identification signal terminal is connected to the charging base 1 connection identification signal terminal to identify whether the battery box is connected to the charging base 1. If the charging base 1 is used for charging, when the battery box is placed on the charging base 1, the microcontroller unit automatically determines that the battery box is connected to the charging base 1 through the charging base 1 identification signal terminal and the charging base 1 connection identification signal terminal, and automatically switches to the charging mode of the charging base 1. The first connection status terminal is connected to the connection status port to monitor the connection status of the battery box and the charging base 1.

[0042] The charging gun interface also includes a temperature sampling terminal and a gun output status terminal. The sampling interface also includes a temperature sampling port, and the control / status interface also includes a charging gun output status terminal. The temperature sampling terminal is connected to the temperature sampling port to monitor the temperature of the charging gun interface in real time. If the temperature is too high, the microcontroller unit adjusts the charging strategy through internal programming to reduce the charging temperature to an acceptable range. The gun output status terminal is connected to the charging gun output status terminal to monitor whether the charging gun output status is normal.

[0043] In this embodiment, the charger body is equipped with a gun base switch, and the control / status interface has a gun base switch control terminal. The gun base switch is connected to the gun base switch control terminal, the charging gun, and the charging base 1. The user can use the gun base switch to select the charging method between the charging base 1 and the charging gun.

[0044] Further, based on Figure 1As shown, it also includes a human-computer interaction module, which has a display screen, an emergency stop button and an indicator light. The communication interface has a USART port, which is connected to the display screen. The control / status interface has an emergency stop button status terminal and an indicator light control terminal, the emergency stop button is connected to the emergency stop button status terminal, and the indicator light is connected to the indicator light control terminal. During the charging process, the battery voltage, current, number of charges, battery temperature and other information can be displayed in real time on the display screen. If an abnormal situation occurs, a reminder can be given through the indicator light. In case of an emergency, the charging can be interrupted in time through the emergency stop button. The display screen can be set to a touch screen, and the above-mentioned gun mount switch is integrated into the human interaction module. The user can select the charging method through the touch screen according to needs.

[0045] Further, based on Figure 1 As shown, the communication interface also includes an Ethernet port and an RS485 port, which are convenient for connecting to external monitoring or realizing networking between charger devices to achieve information sharing and remote monitoring.

[0046] In this embodiment, as shown in the figure, the control / status interface also includes an input switch status terminal, an electromagnetic lock status port, an access switch control terminal, and an electromagnetic lock control terminal. The communication interface is also provided with a charging module CAN, and the charging gun is also provided with an electromagnetic lock status terminal and an electromagnetic lock. The electromagnetic lock status port is connected to the electromagnetic lock status terminal, and the electromagnetic lock control terminal is connected to the electromagnetic lock. The input switch status terminal is the AC input switch of the charger. The electromagnetic lock and related interfaces are the locking mechanism of the national standard charging gun. The charging module CAN is the interface for communication with the charging module. These components are all common and necessary settings for chargers and will not be detailed here.

[0047] The method of using the charging base 1 to charge the battery box in this embodiment is as follows:

[0048] Place the battery pack on charging base 1 and connect charging port 2 to the charging port of the battery pack, and connect discharge port 3 to the discharge port of the battery pack. The user selects charging base 1 for charging via the switch on the gun base, or the charger's microcontroller unit automatically determines that the battery pack is connected to charging base 1 through the charging base 1 recognition signal terminal and the charging base 1 connection recognition signal terminal, and automatically switches to charging base 1 charging mode for charging.

[0049] During charging, the charger monitors the voltage and current data at the first DC output terminal via the voltage and current sampling terminals. The battery pack discharge CAN and the battery pack fire extinguishing system CAN form a CAN network with the discharge CAN and fire extinguishing CAN. This information is transmitted to the microcontroller via the discharge / fire extinguishing CAN for monitoring. Thermistors R1 and R2, respectively, monitor the temperature of the positive terminal DC+4 and the negative terminal DC-5 during charging in real time. This temperature information is promptly fed back to the battery pack's BMS and then transmitted to the microcontroller.

[0050] The above configuration allows for real-time evaluation of detailed parameters such as voltage, current, cell voltage, number of charges, and battery temperature during the charging process. Battery health checks can also be performed based on battery information acquired via the battery box discharge CAN to assess battery aging and performance degradation. Charging strategies can be adjusted based on the evaluation results to optimize battery usage and maintenance plans. If the temperature is too high, the microcontroller activates cooling device 7 for cooling. Battery fire extinguishing information can be acquired from the battery fire extinguishing system CAN. If a battery fire occurs, an indicator light can alert the operator to take timely action. If a dangerous situation arises, the emergency stop button can be used to interrupt charging.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A charger, characterized in that: The charger comprises a main body, the main body having a charging base, the charging base being provided with a charging interface and a discharge interface for connecting to a discharge port of a battery box, the main body having a microcontroller unit, the microcontroller unit having a communication interface, a control / status interface and a sampling interface, wherein: The charging interface includes a first DC output terminal, a first auxiliary power supply terminal, and a first charging CAN; The discharge interface includes a low-voltage power supply terminal, a discharge CAN and a fire extinguishing CAN; The sampling interface includes a voltage sampling terminal and a current sampling terminal; The communication interface includes BMS CAN and discharge / fire extinguishing CAN; The control / status interface includes an output switch status terminal, an output switch control terminal, a BMS auxiliary power supply control terminal, and a low-voltage power supply control terminal; The output switch status terminal, the output switch control terminal, the voltage sampling terminal and the current sampling terminal are all connected to the first DC output terminal, the first auxiliary power supply terminal is connected to the BMS auxiliary power supply control terminal, the first charging CAN is connected to the BMS CAN, the low-voltage power supply terminal is connected to the low-voltage power supply control terminal, and the discharge CAN and the fire extinguishing CAN are both connected to the discharge / fire extinguishing CAN.

2. The charger according to claim 1, wherein: The charging interface is equipped with a thermistor R1 and a thermistor R2. The charging interface has a positive electrode DC+, a negative electrode DC-, and a signal line terminal for connecting to the battery box; one end of the thermistor R1 and one end of the thermistor R2 are connected to each other and form a pin T-, the other end of the thermistor R1 is provided with a pin T1+, and the other end of the thermistor R2 is provided with a pin T2+; The thermistor R1 is placed in the positive electrode DC+, the thermistor R2 is placed in the negative electrode DC-, and the pin T-, the pin T1+, and the pin T2+ are all located at the signal line connection terminal.

3. The charger according to claim 1 or 2, wherein: The charging base is further provided with a cooling device, the control / status interface has a cooling device control end, and the cooling device is connected to the cooling device control end.

4. The charger according to claim 3, wherein: The cooling device is a fan or a semiconductor refrigerator.

5. The charger according to claim 1, wherein: The charger body is further provided with a charging gun, the interface of the charging gun includes a second DC output terminal, a second auxiliary power terminal, a second charging CAN and a second connection status terminal; The output switch status terminal, the output switch control terminal, the voltage sampling terminal and the current sampling terminal are all connected to the second DC output terminal, the second auxiliary power supply terminal is connected to the BMS auxiliary power supply control terminal, the second charging CAN is connected to the BMS CAN, and the second connection status terminal is connected to the connection status port.

6. The charger according to claim 5, wherein: The charging interface further includes a charging cradle identification signal terminal and a first connection status terminal; the control / status interface further includes a charging cradle connection identification signal terminal, and the sampling interface further includes a connection status port; The charging base identification signal terminal is connected to the charging base connection identification signal terminal, and the first connection status terminal is connected to the connection status port.

7. The charger according to claim 5, wherein: The charging gun interface also includes a temperature sampling terminal and a gun output status terminal. The sampling interface also includes a temperature sampling port, and the control / status interface also includes a charging gun output status terminal. The temperature sampling end is connected to the temperature sampling port, and the gun output status end is connected to the charging gun output status end.

8. The charger according to claim 5, wherein: The charger body is provided with a gun base switching switch, the control / status interface has a gun base switching control terminal, and the gun base switching switch is connected to the gun base switching control terminal, the charging gun and the charging base at the same time.

9. The charger according to claim 1, 2 or 5, wherein: It also includes a human-computer interaction module, which has a display screen, an emergency stop button and an indicator light; The communication interface has a USART port, and the USART port is connected to the display screen; The control / status interface has an emergency stop button status terminal and an indicator light control terminal. The emergency stop button is connected to the emergency stop button status terminal, and the indicator light is connected to the indicator light control terminal.

10. The charger according to claim 1, 2 or 5, characterized in that: The communication interface also includes an Ethernet port and an RS485 interface.

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