A charging gun, a charging pile, a charging control method thereof, and a charging system

Abstract

The application provides a charging gun, a charging pile, a charging control method thereof and a charging system to improve charging safety. The charging gun comprises a shell and a fuse protection device. The fuse protection device is arranged in the shell and comprises a protection shell and a fuse. The fuse is arranged in the protection shell. The protection shell is provided with a first opening and a second opening. A ground wire is arranged in the shell. The ground wire comprises a first part and a second part. The first part has a first connecting end. The second part has a second connecting end. The first part is used for electrically connecting with a ground wire of the charging pile. The second part is used for electrically connecting with a ground wire of a vehicle. The first connecting end is electrically connected with a first end of the fuse through the first opening. The second connecting end is electrically connected with a second end of the fuse through the second opening.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a charging gun, a charging pile, a charging control method thereof, and a charging system. Background Technology

[0002] As the capacity of electric vehicle batteries increases, so does the charging power. This increased charging power often leads to drawbacks such as thicker charging cables and greater weight, making charging more difficult for users. To address this, some charging guns are increasingly using liquid-cooled cables instead of ordinary air-cooled cables. This improves the power density per unit cross-sectional area of ​​the DC bus while ensuring adequate heat dissipation, allowing the DC bus to achieve greater current carrying capacity with a relatively smaller cable diameter.

[0003] There is an approximately proportional relationship between the ground wire and the DC bus of the charging gun. When the diameter of the DC bus is designed to be small, the diameter of the ground wire is also reduced accordingly. When a short circuit occurs between the electric vehicle and the charging pile, the ground wire may blow before the fuse in the charging circuit, which may lead to cable fire or electric shock due to insulation failure, affecting charging safety. Summary of the Invention

[0004] This application provides a charging gun, a charging pile, a charging control method thereof, and a charging system to improve charging safety.

[0005] In a first aspect, this application provides a charging gun, which may include a housing and a fuse protection device. The fuse protection device is disposed within the housing and may include a protective shell and a fuse disposed within the protective shell. The protective shell has a first opening and a second opening. A ground wire is disposed within the housing, which may include a first portion and a second portion. The first portion has a first connection terminal, and the second portion has a second connection terminal. The first portion can be used for electrical connection with the ground wire of a charging pile, and the second portion can be used for electrical connection with the ground wire of a vehicle. The first connection terminal can be electrically connected to the first terminal of the fuse through the first opening, and the second connection terminal can be electrically connected to the second terminal of the fuse through the second opening.

[0006] In the above scheme, the ground wire of the charging gun is electrically connected to the ground wire of the vehicle. When the electrode of the vehicle's power battery is short-circuited to ground, the fuse protection device is located in the short-circuit loop of the power battery. The fuse can melt before the ground wire reaches its melting point, thereby disconnecting the first connection terminal and the second connection terminal without burning the ground wire, cutting off the energy path of the short-circuit loop, and thus improving charging safety.

[0007] In some possible implementations, the protective housing may include a first housing and a second housing, which are detachably connected and, when connected, form a space to accommodate the fuse. This detachable connection allows the protective housing to be removed and replaced after the fuse blows, eliminating the need to replace the entire fuse protection device and thus reducing replacement costs.

[0008] For example, the first housing and the second housing can be connected by threaded connection, snap-fit, etc.

[0009] In some possible implementations, the fuse protection device may further include a first retainer and a second retainer, both of which are disposed within a protective housing. The first retainer is positioned near the first opening and electrically connected to the first connecting end, while the second retainer is positioned near the second opening and electrically connected to the second connecting end. The first end of the fuse is engaged in and electrically connected to the first retainer, and the second end of the fuse is engaged in and electrically connected to the second retainer. By providing the first and second retainers, the reliability of the electrical connection between the fuse and the first and second connecting ends can be ensured, while also reducing the difficulty of assembling and disassembling the fuse within the fuse protection device.

[0010] In some possible implementations, the fuse protection device may further include a first terminal and a second terminal disposed within the protective housing. The first terminal can be used to electrically connect the first connection end of the fuse and the first mounting bracket, and the second terminal can be used to electrically connect the second connection end of the fuse and the second mounting bracket, so as to improve the reliability of the electrical connection between the fuse and the first and second mounting brackets on both sides.

[0011] For example, the first terminal and the second terminal can be OT terminals.

[0012] In some possible implementations, the inner wall of the protective housing may be provided with retaining ribs. The retaining ribs may be arranged around the circumference of the fuse and abut against the outer wall of the fuse. In this way, the retaining ribs can be used to fix the fuse inside the protective housing, thereby improving the structural stability of the fuse protection device.

[0013] The retaining rib can be made of a soft material to cushion the fuse when the charging gun moves or shakes, reducing the risk of fuse damage. For example, the retaining rib may be made of materials including, but not limited to, rubber, plastic, foam, or leather.

[0014] Secondly, this application also provides a charging pile, which may include a power module and a charging gun. The power module can be connected to the vehicle's power battery through the charging gun to form a charging circuit. The charging gun may include a housing and a fuse protection device, wherein the fuse protection device is disposed within the housing and may include a protective shell and a fuse disposed within the protective shell. The protective shell has a first opening and a second opening. A ground wire is disposed within the housing, which may include a first part and a second part. The first part has a first connection terminal, and the second part has a second connection terminal. The first part can be used to electrically connect to the ground wire of the charging pile, and the second part can be used to electrically connect to the ground wire of the vehicle. The first connection terminal can be electrically connected to the first end of the fuse through the first opening, and the second connection terminal can be electrically connected to the second end of the fuse through the second opening. The fuse of the fuse protection device can disconnect the first connection terminal from the second connection terminal by melting, thereby cutting off the energy path of the short-circuit loop and improving charging safety.

[0015] In some possible implementations, the protective housing may include a first housing and a second housing, which are detachably connected and, when connected, form a space to accommodate the fuse. This detachable connection allows the protective housing to be removed and replaced after the fuse blows, eliminating the need to replace the entire fuse protection device and thus reducing replacement costs.

[0016] In some possible implementations, the fuse protection device may further include a first retainer and a second retainer, both of which are disposed within a protective housing. The first retainer is positioned near the first opening and electrically connected to the first connecting end, while the second retainer is positioned near the second opening and electrically connected to the second connecting end. The first end of the fuse is engaged in and electrically connected to the first retainer, and the second end of the fuse is engaged in and electrically connected to the second retainer. By providing the first and second retainers, the reliability of the electrical connection between the fuse and the first and second connecting ends can be ensured, while also reducing the difficulty of assembling and disassembling the fuse within the fuse protection device.

[0017] In some possible implementations, the inner wall of the protective housing may be provided with retaining ribs. The retaining ribs may be arranged around the circumference of the fuse and abut against the outer wall of the fuse. In this way, the retaining ribs can be used to fix the fuse inside the protective housing, thereby improving the structural stability of the fuse protection device.

[0018] The retaining rib can be made of a soft material to cushion the fuse when the charging gun moves or shakes, reducing the risk of fuse damage. For example, the retaining rib may be made of materials including, but not limited to, rubber, plastic, foam, or leather.

[0019] Thirdly, this application also provides a charging system, which may include a vehicle and a charging pile. The vehicle includes a power battery, and the charging pile may include a power module, a charging gun, and a charger controller. The power module of the charging pile can be connected to the power battery through the charging gun to form a charging circuit. The charging gun may include a housing and a fuse protection device, wherein the fuse protection device is disposed within the housing and may include a protective shell and a fuse disposed within the protective shell. The protective shell is provided with a first opening and a second opening; a ground wire is provided within the housing, which may include a first part and a second part. The first part has a first connection terminal, and the second part has a second connection terminal. The first part can be used to electrically connect to the ground wire of the charging pile, and the second part can be used to electrically connect to the ground wire of the vehicle. The first connection terminal can be electrically connected to the first end of the fuse through the first opening, and the second connection terminal can be electrically connected to the second end of the fuse through the second opening. The charger controller can be used to obtain the status of the fuse. When the fuse is open, the connection between the power module and the charging gun is cut off, that is, the power output of the charging pile is cut off. In this way, the short circuit loop of the power module of the charging pile is also simultaneously cut off, thereby reducing the risk of safety accidents.

[0020] In some possible implementations, the protective housing may include a first housing and a second housing, which are detachably connected and, when connected, form a space to accommodate the fuse. This detachable connection allows the protective housing to be removed and replaced after the fuse blows, eliminating the need to replace the entire fuse protection device and thus reducing replacement costs.

[0021] In some possible implementations, the fuse protection device may further include a first retainer and a second retainer, both of which are disposed within a protective housing. The first retainer is positioned near the first opening and electrically connected to the first connecting end, while the second retainer is positioned near the second opening and electrically connected to the second connecting end. The first end of the fuse is engaged in and electrically connected to the first retainer, and the second end of the fuse is engaged in and electrically connected to the second retainer. By providing the first and second retainers, the reliability of the electrical connection between the fuse and the first and second connecting ends can be ensured, while also reducing the difficulty of assembling and disassembling the fuse within the fuse protection device.

[0022] In some possible implementations, the inner wall of the protective housing may be provided with retaining ribs. The retaining ribs may be arranged around the circumference of the fuse and abut against the outer wall of the fuse. In this way, the retaining ribs can be used to fix the fuse inside the protective housing, thereby improving the structural stability of the fuse protection device.

[0023] The retaining rib can be made of a soft material to cushion the fuse when the charging gun moves or shakes, reducing the risk of fuse damage. For example, the retaining rib may be made of materials including, but not limited to, rubber, plastic, foam, or leather.

[0024] In some possible implementations, the vehicle may also include a vehicle controller. When the charger controller on the charging pile side disconnects the power module from the charging gun, it can also periodically send a charging stop message to the vehicle controller. Upon receiving this charging stop message, the vehicle controller can determine whether the vehicle's charging current is less than a set current threshold. If it determines that the charging current is less than the current threshold, it disconnects the power battery from the charging gun, that is, it cuts off the power output of the power battery, thus achieving a safe disconnection between the vehicle and the charging pile.

[0025] In some other possible implementations, the vehicle controller can also be used to determine whether the vehicle's charging current is less than a current threshold after receiving the charging stop message. If the charging current is not less than the current threshold, the connection between the power battery and the charging gun will be cut off after a set time, thus achieving the purpose of safe disconnection.

[0026] In some possible implementations, the charging pile may further include a first resistor, a second resistor, and a power supply. The second connection terminal of the ground wire may be electrically connected to a preset first detection point through the second resistor, and the first detection point may be electrically connected to the power supply through the first resistor. In this case, the charging motor controller can also be used to obtain the voltage of the first detection point. When the voltage of the first detection point is pulled up to the voltage value of the power supply, it is determined that the fuse has been blown.

[0027] Fourthly, this application also provides a charging control method for a charging pile. The charging pile may include a power module and a charging gun. The power module is connected to the vehicle's power battery via the charging gun to form a charging circuit. The charging gun may include a housing and a fuse protection device, wherein the fuse protection device is disposed within the housing and may include a protective shell and a fuse disposed within the protective shell. The protective shell has a first opening and a second opening. A ground wire is disposed within the housing, which may include a first part and a second part. The first part has a first connection terminal, and the second part has a second connection terminal. The first part can be used for electrical connection with the ground wire of the charging pile, and the second part can be used for electrical connection with the ground wire of the vehicle. The first connection terminal can be electrically connected to the first end of the fuse through the first opening, and the second connection terminal can be electrically connected to the second end of the fuse through the second opening. The charging control method may include:

[0028] Get the status of the fuse;

[0029] When the fuse trips, it disconnects the power module from the charging gun.

[0030] In the above solution, when the fuse trips, the power output of the charging pile can be cut off by disconnecting the connection between the power module and the charging gun. At the same time, the short-circuit loop of the power module of the charging pile is also cut off, thereby reducing the risk of safety accidents.

[0031] In some possible implementations, after disconnecting the power module from the charging station, the above charging control method may further include:

[0032] The system periodically sends a stop charging message to the vehicle controller so that the vehicle can take corresponding control measures to cut off the power output of the battery.

[0033] In some possible implementations, the charging pile may further include a first resistor, a second resistor, and a power supply. The second connection terminal of the ground wire may be electrically connected to a preset first detection point via the second resistor, and the first detection point may be electrically connected to the power supply via the first resistor. In this case, the charging control method may further include:

[0034] Obtain the voltage at the first detection point;

[0035] When the voltage at the first detection point jumps to the power supply voltage, it is determined that the fuse has tripped.

[0036] Fifthly, this application also provides a charging control device for a charging pile. The charging pile may include a power module and a charging gun. The power module of the charging pile is connected to the vehicle's power battery via the charging gun to form a charging circuit. The charging gun may include a housing and a fuse protection device, wherein the fuse protection device is disposed within the housing and may include a protective shell and a fuse disposed within the protective shell. The protective shell has a first opening and a second opening. A ground wire is disposed within the housing, which may include a first part and a second part. The first part has a first connection terminal, and the second part has a second connection terminal. The first part can be used for electrical connection with the ground wire of the charging pile, and the second part can be used for electrical connection with the ground wire of the vehicle. The first connection terminal can be electrically connected to the first end of the fuse through the first opening, and the second connection terminal can be electrically connected to the second end of the fuse through the second opening. The charging control device may include a first communication unit and a first processing unit, wherein:

[0037] The first communication unit is used to check the status of the fuse;

[0038] The first processing unit is used to disconnect the power module from the charging gun when the fuse is blown.

[0039] In the above solution, when the fuse trips, the power output of the charging pile can be cut off by disconnecting the connection between the power module and the charging gun. At the same time, the short-circuit loop of the power module of the charging pile is also cut off, thereby reducing the risk of safety accidents.

[0040] In some possible implementations, the first communication unit may be used to acquire the voltage at the first detection point, and the first processing unit may be used to determine that the fuse has been opened when the voltage at the first detection point jumps to the voltage value of the power supply.

[0041] In some possible implementations, the first processing unit can also be used to periodically send a stop charging message to the vehicle controller on the vehicle side, so that the vehicle side can take corresponding control to cut off the power output of the power battery.

[0042] In a sixth aspect, this application also provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to implement the charging control method in any possible implementation of the fourth aspect.

[0043] In a seventh aspect, this application also provides a computer program including instructions that, when executed on a computer, cause the computer to implement the charging control method in any possible implementation of the fourth aspect. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of a vehicle charging scenario.

[0045] Figure 2 for Figure 1 The diagram shows a schematic of a charging principle for a vehicle.

[0046] Figure 3 A simplified structural diagram of a charging pile provided in an embodiment of this application;

[0047] Figure 4 This is a schematic diagram of the structure of the fuse protection device provided in the embodiments of this application;

[0048] Figure 5 for Figure 4 A schematic diagram of the fuse shown;

[0049] Figure 6 for Figure 4 A schematic diagram of the cross-sectional structure of the fuse protection device shown at point AA;

[0050] Figure 7 This is a schematic diagram of the charging system provided in an embodiment of this application;

[0051] Figure 8 for Figure 7 The diagram shows the charging principle of the charging system shown.

[0052] Figure 9 A circuit diagram of a charging system provided in an embodiment of this application;

[0053] Figure 10 A flowchart of a charging control method for a charging pile provided in an embodiment of this application;

[0054] Figure 11 A flowchart of a vehicle charging control method provided in an embodiment of this application;

[0055] Figure 12 A schematic diagram of the structure of a computing device provided in an embodiment of this application.

[0056] Figure label:

[0057] 10-Vehicle; 11-Power battery; 12-Motor; 13-Wheel; 14-Motor controller; 15-Vehicle controller;

[0058] 20 - Charging station; 21 - Power module; 22 - Charging gun; 221 - Housing; 222 - Ground wire;

[0059] 2221 - First part; 2222 - Second part; 2223 - First connection terminal; 2224 - Second connection terminal;

[0060] 223-Fuse protection device; 2231-Protective shell; 22311-Clamping rib; 22312-First opening; 22313-Second opening;

[0061] 22314 - First housing; 22315 - Second housing; 2232 - Fuse; 22321 - First terminal of fuse;

[0062] 22322 - Second terminal of the fuse; 2233 - First mounting bracket; 2234 - Second mounting bracket; 2235 - First terminal block;

[0063] 2236 - Second terminal block; 23 - Pile body; 24 - Charger controller;

[0064] 30-Power frequency power grid;

[0065] 1000 - Computing device; 1110 - Processor; 1120 - Memory; 1130 - Communication interface; 1140 - Bus. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings of the embodiments of this application are for illustrating relative positional relationships only and do not represent actual scale.

[0067] It should be noted that specific details are set forth in the following description to facilitate understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0068] In recent years, environmental pollution and energy shortages have accelerated the development and utilization of green and renewable energy. Developing new energy vehicles, represented by electric vehicles and hybrid vehicles, is a crucial measure for achieving energy conservation, emission reduction, and pollution control. Electric vehicles, by replacing internal combustion engines with electric motors, not only achieve zero emissions, low noise, and no pollution, but also significantly conserve dwindling petroleum resources. Hybrid vehicles, on the other hand, utilize both electric motors and internal combustion engines for power, combining the advantages of long driving range and high performance of engine-driven vehicles with the benefits of low noise and zero pollution from electric motors. With the increasing maturity and development of power battery technology, electric vehicles and hybrid vehicles are destined to become the main trends in the future development of the automotive industry.

[0069] Figure 1 This is a schematic diagram illustrating a vehicle charging scenario. (Reference) Figure 1 As shown, the vehicle 10 includes, but is not limited to, an electric vehicle or a hybrid vehicle. The vehicle 10 may include a power battery 11, a motor 12, and wheels 13. The power battery 11 may be a high-capacity, high-power battery. The power battery 11 can supply power to the motor 12 through a motor control unit (MCU). The motor 12 converts the electrical energy of the power battery 11 into mechanical energy, thereby driving the wheels 13 to rotate and enabling the vehicle 10 to move.

[0070] Please refer to the above. Figure 2 As shown, Figure 2 for Figure 1The diagram illustrates a charging principle for a vehicle. Vehicle 10 can be charged via a charging station 20, which typically includes a power module 21 and a charging gun 22. One end of the power module 21 is connected to the power grid 30, and the other end is connected to the charging gun 22 via a cable. Currently, most charging stations 20 are DC charging stations, where the power module 21 converts the AC power provided by the power grid 30 into DC power. The operator inserts the charging gun 22 into the charging port of vehicle 10, connecting the charging gun 22 to the vehicle 10's power battery 11, thus forming a charging circuit between the power module 21 and the power battery 11, allowing the power module 21 to charge the power battery 11 through the charging gun 22. Furthermore, for safety reasons, during charging, the ground of the charging station 20 and the ground of vehicle 10 can be electrically connected through the ground wire in the charging gun 22 to ensure that the equipment ground of the charging station 20 and the vehicle body ground maintain equipotential.

[0071] As the capacity of the vehicle's power battery increases, the charging power also rises significantly. Therefore, the current-carrying capacity of the DC bus of the charging gun 22 needs to be increased accordingly. This leads to a thicker charging gun wire diameter, resulting in increased weight and a larger bending radius for the charging gun 22, thus increasing the difficulty of charging operation for users. To address this, some charging guns 22 have begun to use liquid-cooled wires instead of traditional air-cooled wires. This improves the power density per unit cross-sectional area of ​​the DC bus while ensuring heat dissipation, allowing the DC bus to achieve a greater current-carrying capacity with a relatively smaller wire diameter. This helps reduce the size and weight of the charging gun 22, reducing the difficulty of operation for users.

[0072] It is understandable that the diameter of the ground wire in charging gun 22 is matched with the diameter of the DC bus, or it can be understood that the diameter of the ground wire and the diameter of the DC bus are approximately proportional. Therefore, when the DC bus is designed with a small diameter and high current carrying capacity, the diameter of the ground wire will also decrease accordingly. (Reference) Figure 2 When a short circuit occurs in the charging system consisting of vehicle 10 and charging pile 20, one end of the short circuit point is a short circuit from a certain terminal of the vehicle (e.g., positive terminal) to the vehicle ground, and the other end is a short circuit from a certain terminal of the charging pile (e.g., negative terminal) to the equipment ground. The short circuit loop of the power battery of vehicle 10 is as follows: Figure 2 As shown by the dashed loop in the diagram, the short-circuit loop of the power module 21 of the charging pile 20 is as follows: Figure 2 As shown in the solid line loop, both short-circuit loops pass through the ground wire of the charging gun 22.

[0073] Without reducing the wire diameter of the ground wire in charging gun 22, the current-carrying capacity of the vehicle fuse in the charging busbar on vehicle 10 side is often less than that of the ground wire. Therefore, if a short circuit occurs, in the short-circuit loop on the power battery 11 side of vehicle 10, the vehicle fuse in the charging busbar on vehicle 10 side will blow before the ground wire of charging gun 22, thereby cutting off the energy path of the failed circuit and preventing an accident. However, after the wire diameter of the ground wire in charging gun 22 decreases synchronously with the diameter of the DC bus, the current-carrying capacity of the ground wire in charging gun 22 will be greatly reduced. When a short circuit occurs, the ground wire may blow before the vehicle fuse in the charging busbar on vehicle 10 side, leading to cable fire or electric shock due to insulation failure. If the ground wire does not continue to burn after burning, existing charging piles cannot handle the situation in a timely and effective manner, and the exposed conductor of the ground wire may become live, posing a risk of electric shock to users and endangering their personal safety.

[0074] To address the aforementioned problems, this application provides a charging gun, a charging pile using the charging gun, and a charging system, so as to prevent the charging gun wire from burning out or leaking current when a short circuit occurs in the charging system, even when the charging gun wire uses a small diameter wire, thereby improving charging safety. The charging gun will first be described below with reference to specific embodiments.

[0075] refer to Figure 3 As shown, Figure 3 This is a simplified structural diagram of a charging pile provided in an embodiment of this application. The charging pile 20 includes a power module 21 and a charging gun 22. One end of the charging gun 22 is electrically connected to the power module 21 via a charging cable, and the other end can be inserted into the vehicle's charging port to charge the vehicle. Additionally, the charging pile 20 may also include a pile body 23. The pile body 23 can be placed on the ground or mounted on a wall, depending on the environment of the charging location; this application does not impose any restrictions on this. The power module 21 can be disposed inside the pile body 23. When the charging pile 20 is in an idle state, that is, when the charging pile 20 is not charging a vehicle, the charging gun 22 can be placed on the pile body 23.

[0076] In some embodiments, the charging gun 22 may include a housing 221, a ground wire 222, and a fuse protection device 223. The ground wire 222 is disposed within the housing 221, and one end of the ground wire 222 can be electrically connected to the ground wire of the charging pile 20, while the other end can be electrically connected to the vehicle's ground wire after the charging gun 22 is inserted into the vehicle's charging port, thereby establishing an electrical connection between the device ground and the vehicle ground, ensuring that the device ground and the vehicle ground maintain equipotential during charging. The ground wire 222 may have a break, dividing the ground wire into two parts: a first part 2221 connected to the charging pile 20 and a second part 2222 connected to the vehicle. The first part 2221 has a first connection terminal 2223, and the second part 2222 has a second connection terminal 2224. The fuse protection device 223 can be electrically connected between the first connection terminal 2223 and the second connection terminal 2224.

[0077] refer to Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of the fuse protection device provided in an embodiment of this application. In this embodiment, the fuse protection device 223 may include a protective shell 2231 and a fuse 2232, with the fuse 2232 disposed within the protective shell 2231. The protective shell 2231 may be made of insulating material to provide insulation protection for the fuse 2232. Exemplarily, the protective shell 2231 may be made of plastic. The inner wall of the protective shell 2231 may also be provided with a retaining rib 22311, which may be arranged around the circumference of the fuse 2232. The outer wall of the fuse 2232 may abut against the retaining rib 22311, thereby using the retaining rib 22311 to fix the fuse 2232 within the protective shell. In some embodiments, the retaining rib 22311 can be continuously arranged around the circumference of the fuse 2232, that is, the retaining rib 22311 can be a ring structure, thereby increasing the contact area between the retaining rib 22311 and the fuse 2232 and improving the fixing strength of the fuse 2232. In addition, the retaining rib 22311 can be made of a soft material to cushion the fuse 2232 when the charging gun moves or shakes, reducing the risk of the fuse 2232 being damaged due to impact or compression. Exemplarily, the material of the retaining rib 22311 includes, but is not limited to, rubber, plastic, foam, or leather.

[0078] The protective housing 2231 may be provided with a first opening 22312 and a second opening 22313. The first connection terminal 2223 of the ground wire can extend into the protective housing 2231 through the first opening 22312, and the second connection terminal 2224 of the ground wire can extend into the protective housing 2231 through the second opening 22313. The fuse 2232 includes a first end 22321 and a second end 22322. The first end 22321 of the fuse 2232 can be electrically connected to the first connection terminal 2223 of the ground wire, and the second end 22322 of the fuse 2232 can be electrically connected to the second connection terminal 2224 of the ground wire. When the current passing through the ground wire exceeds the specified value of the fuse 2232, the fuse 2232 can melt its fusible element through the heat generated by itself, thereby disconnecting the first connection terminal 2223 and the second connection terminal 2224, and thus disconnecting the ground wire. Understandably, the current-carrying capacity of fuse 2232 should be less than that of the ground wire to ensure that fuse 2232 will blow before the ground wire when a relatively large current passes through, thus providing protection. In practical applications, the current-carrying capacity of fuse 2232 can be designed according to the wire diameter of the ground wire, which will not be elaborated here.

[0079] In some embodiments, the protective housing 2231 may include a first housing 22314 and a second housing 22315, wherein the first housing 22314 and the second housing 22315 are connected to form an accommodating space for accommodating the fuse 2232. The first housing 22314 and the second housing 22315 can be detachably connected; for example, the connection method includes, but is not limited to, threaded connection, snap-fit, etc. With the detachable connection method, when the fuse 2232 blows, the protective housing 2231 can be removed, the fuse 2232 can be taken out, and a new fuse 2232 can be installed, without having to replace the entire fuse protection device 223, thereby reducing replacement costs.

[0080] Figure 5 for Figure 4 The diagram shows the structure of the fuse. Please refer to it as well. Figure 4 and Figure 5 As shown, in this embodiment, the fuse 2232 can be approximately cylindrical in shape. A round cap is fitted onto the first end 22321 and the second end 22322 of the fuse 2232, which serves as the two terminals of the fuse 2232. The first connection terminal 2223 and the second connection terminal 2224 of the ground wire can be electrically connected to the fuse 2232 through the round caps at both ends of the fuse 2232, thus connecting the fuse 2232 to the ground wire.

[0081] Figure 6 for Figure 4 The diagram shows a cross-sectional view of the fuse protection device at point AA. (See also...) Figure 4 and Figure 6As shown, the fuse protection device 223 may further include a first retainer 2233 and a second retainer 2234. The first retainer 2233 and the second retainer 2234 are respectively disposed within the protective shell 2231, with the first retainer 2233 disposed near the first opening 22312 of the protective shell 2231 and the second retainer 2234 disposed near the second opening 22313 of the protective shell 2231. Both the first retainer 2233 and the second retainer 2234 may be made of conductive materials. For example, the materials of the first retainer 2233 and the second retainer 2234 may include, but are not limited to, metallic copper or aluminum. In this case, the first retainer 2233 may be electrically connected to the first connection terminal 2223 of the ground wire, and the second retainer 2234 may be electrically connected to the second connection terminal 2224 of the ground wire.

[0082] The first end 22321 of the fuse 2232 can be snapped into the first retainer 2233. This fixes the fuse 2232 relative to the first retainer 2233 and allows the first end 22321 of the fuse 2232 to be electrically connected to the first connection end 2223 of the ground wire through the first retainer 2233. Similarly, the second end 22322 of the fuse 2232 can be snapped into the second retainer 2234, thereby fixing the fuse 2232 relative to the second retainer 2234 and further connecting the second end 22322 of the fuse 2232 to the second connection end 2224 of the ground wire through the second retainer 2234. Based on the snap-fit ​​relationship between the fuse 2232 and the first and second mounting brackets 2233, while ensuring the reliability of the electrical connection between the fuse 2232 and the two mounting brackets, the fuse 2232 can be easily removed from the two mounting brackets after it blows, thereby reducing the difficulty of replacing the fuse 2232.

[0083] In some embodiments, the first card holder 2233 and the first connection terminal 2223 of the ground wire can be electrically connected by welding. In other embodiments, the fuse protection device 223 may also include a first terminal 2235, in which case the first terminal 2235 can be used to electrically connect the first card holder 2233 and the first connection terminal 2223 of the ground wire to improve the reliability of the electrical connection. For example, the first connection terminal 2235 can be an OT terminal. Similarly, the second card holder 2234 and the second connection terminal 2224 of the ground wire can be connected by welding or by providing a second terminal 2236, which will not be elaborated further here.

[0084] Based on the charging piles provided in the above embodiments, this application also provides a charging system, see reference. Figure 7 As shown, Figure 7This is a schematic diagram of the charging system provided in an embodiment of this application. In this embodiment, in addition to the charging pile 20, the charging system may also include a vehicle 10, which may include, but is not limited to, an electric vehicle or a hybrid vehicle. The vehicle 10 is provided with a charging port, and the charging gun 22 can be inserted into the charging port to charge the vehicle 10. The ground wire of the charging gun 22 is electrically connected to the ground of the charging pile 20 and the ground wire of the vehicle 10, respectively.

[0085] Figure 8 for Figure 7 The diagram shows the charging principle of the charging system. Please refer to it as well. Figure 7 and Figure 8 As shown, when the charging system is working normally, the fuse protection device 223 can be used as a wire to electrically connect the first part 2221 and the second part 2222 of the ground wire 222. When a short circuit occurs in the charging system, the fuse 2232 in the fuse protection device 223 will melt before the ground wire reaches its melting point in the short circuit loop on the power battery 11 side of the vehicle 10. This allows the first part 2221 and the second part 2222 to be disconnected without the ground wire 222 itself burning out, thus cutting off the energy path of the short circuit loop and reducing the risk of accidents in the charging system.

[0086] Figure 9 A circuit diagram of a charging system provided in an embodiment of this application. See also... Figure 8 and Figure 9 As shown, four contactors are installed in the charging circuit formed by the connection between the power module 21 of the charging pile 20 and the power battery 11 of the vehicle 10. These four contactors are K1, K2, K3, and K4, respectively. Contactors K1 and K2 are located on the charging pile 20 side, while contactors K3 and K4 are located on the vehicle 10 side. Additionally, a charger controller 24 can be installed within the charging pile 20. This charger controller 24 can acquire the status of the fuse 2232 and, when the fuse 2232 is open, disconnect the connection between the power module 21 and the charging gun 22, thus cutting off the power output of the charging pile 20. At this time, the short-circuit loop of the power module 21 of the charging pile 20 is also simultaneously disconnected, thereby reducing the risk of safety accidents.

[0087] In the above scheme, when the fuse 2232 is tripped, the charger controller 24 can disconnect the power module 21 from the charging gun 22 by disconnecting contactors K1 and K2. For example, the charger controller 24 can disconnect contactors K1 and K2 within 100ms after the fuse 2232 is tripped.

[0088] In some embodiments, the charging pile may further include a power supply U1, a first resistor R1, and a second resistor R2. The second connection terminal of the ground wire 222 can be connected to a set first detection point A through the second resistor R2, and the first detection point A can be connected to the power supply U1 through the first resistor R1. That is to say, the fuse protection device can be set in... Figure 9 Point B in the diagram. When the charging pile is charging vehicle 10 normally, the first detection point A is connected to the equipment ground through the second resistor R2, and the voltage at the first detection point A is at a relatively low potential. When the fuse of the fuse protection device blows, the second connection terminal is disconnected from the equipment ground, and the voltage at the first detection point A is pulled up to the voltage value of the power supply U1. Based on this principle, in this embodiment, the state of the fuse can be determined by the voltage value of the first detection point A. Specifically, the charger controller 24 can obtain the voltage of the first detection point A, and when it is determined that the voltage of the first detection point A jumps to the voltage value of the power supply U1, it is determined that the fuse has blown.

[0089] Please continue to refer to this. Figure 9 A vehicle controller 15 is installed on the vehicle side. When the charger controller 24 on the charging pile side disconnects the connection between the power module 21 and the charging gun 22, it can simultaneously send a periodic charge stop message to the vehicle controller 15. In one embodiment, after receiving the charge stop message, the vehicle controller 15 can determine whether the charging current of the vehicle 10 is less than a current threshold. When the charging current is less than the current threshold, it disconnects the connection between the power battery 11 and the charging gun 22, that is, it cuts off the power output of the power battery 11, thereby achieving a safe disconnection between the vehicle 10 and the charging pile. For example, the aforementioned current threshold can be set to 5A.

[0090] In another embodiment, after receiving a stop charging message from the charger controller 24, if the vehicle controller 15 determines that the charging current of the vehicle 10 is not less than the aforementioned current threshold, it can disconnect the power battery 11 from the charging gun 22 after a set time, thereby achieving a safe disconnection. For example, the set time can be 3 seconds.

[0091] It should be noted that in both of the above schemes, disconnecting the power battery 11 from the charging gun 22 can be achieved by disconnecting contactors K3 and K4.

[0092] refer to Figure 10 As shown in the illustration, this application also provides a charging control method for a charging pile. The structure of the charging pile can be referred to the description in the foregoing embodiments, and will not be repeated here. The charging control method may include the following steps:

[0093] Step S101: Obtain the status of the fuse;

[0094] Step S102: When the fuse is blown, the connection between the power module and the charging gun is cut off.

[0095] In the above solution, when the fuse trips, the power output of the charging pile can be cut off by disconnecting the connection between the power module and the charging gun. At the same time, the short-circuit loop of the power module of the charging pile is also cut off, thereby reducing the risk of safety accidents.

[0096] In some embodiments, the state of a fuse can be determined specifically by the following methods:

[0097] Obtain the voltage at the preset first detection point;

[0098] When the voltage at the first detection point jumps to the power supply voltage, it is determined that the fuse has been tripped.

[0099] In some embodiments, after disconnecting the power module from the charging pile, the control method may further include:

[0100] Step S103: Periodically send a stop charging message to the vehicle controller on the vehicle side so that the vehicle side can take corresponding control to cut off the power output of the power battery.

[0101] Based on the same technical concept, this application also provides a charging control device for a charging pile, wherein the structure of the charging pile can be referred to the description in the foregoing embodiments, and will not be repeated here. The charging control device may include a first communication unit and a first processing unit, wherein:

[0102] The first communication unit is used to check the status of the fuse;

[0103] The first processing unit is used to disconnect the power module from the charging gun when the fuse is blown.

[0104] In the above solution, when the fuse trips, the power output of the charging pile can be cut off by disconnecting the connection between the power module and the charging gun. At the same time, the short-circuit loop of the power module of the charging pile is also cut off, thereby reducing the risk of safety accidents.

[0105] In some embodiments, the first communication unit may be used to acquire the voltage of the first detection point, and the first processing unit may be used to determine that the fuse has been opened when the voltage of the first detection point jumps to the voltage value of the power supply.

[0106] In some embodiments, the first processing unit may also be used to periodically send a stop charging message to the vehicle controller on the vehicle side, so that the vehicle side can take corresponding control to cut off the power output of the power battery.

[0107] refer to Figure 11As shown in the figure, this application embodiment also provides a vehicle charging control method, which may include the following steps:

[0108] Step S201: Receive the charging stop message sent by the charger controller of the charging pile;

[0109] Step S202: Determine whether the vehicle's charging current is less than the current threshold. If yes, proceed to step S203; otherwise, proceed to step S204.

[0110] Step S203: Disconnect the power battery from the charging gun;

[0111] Step S204: Disconnect the power battery from the charging gun after the set time.

[0112] In the above solution, by disconnecting the power battery from the charging gun, the power output of the power battery can be cut off, thereby achieving the purpose of safely disconnecting the vehicle from the charging station.

[0113] Based on the same technical concept, embodiments of this application also provide a vehicle charging control device, which may include a second communication unit and a second processing unit, wherein:

[0114] The second communication unit can be used to receive a stop charging message sent by the charger controller of the charging pile;

[0115] The second processing unit can be used to determine whether the vehicle's charging current is less than the current threshold. If so, the connection between the power battery and the charging gun is disconnected; otherwise, the connection between the power battery and the charging gun is disconnected after a set time.

[0116] refer to Figure 12 As shown in the illustration, this application also provides a computing device 1000. The computing device 1000 can be a chip or a chip system. Optionally, in this application embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices.

[0117] The computing device 1000 may include at least one processor 1110 coupled to a memory. Optionally, the memory may be located within the device, integrated with the processor, or located outside the device. For example, the computing device 1000 may also include at least one memory 1120. The memory 1120 stores computer programs, configuration information, computer programs or instructions, and / or data necessary for implementing any of the above embodiments; the processor 1110 may execute the computer programs stored in the memory 1120 to perform the methods in any of the above embodiments.

[0118] The computing device 1000 may also include a communication interface 1130, through which the computing device 1000 can interact with other devices. For example, the communication interface 1130 may be a transceiver, circuit, bus, module, pin, or other type of communication interface. When the computing device 1000 is a chip-based device or circuit, the communication interface 1130 in the device may also be an input / output circuit, capable of inputting information (or receiving information) and outputting information (or sending information). The processor may be an integrated processor, a microprocessor, an integrated circuit, or a logic circuit, and the processor can determine the output information based on the input information.

[0119] The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 1110 may operate in conjunction with the memory 1120 and the communication interface 1130. This embodiment does not limit the specific connection medium between the processor 1110, the memory 1120, and the communication interface 1130.

[0120] Optional, see Figure 12 The processor 1110, memory 1120, and communication interface 1130 are interconnected via bus 1140. Bus 1140 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 12 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0121] In the embodiments of this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, capable of implementing or executing the methods, steps, and logic block diagrams of the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods in the embodiments of this application can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0122] In the embodiments of this application, the memory can be non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or it can be volatile memory, such as random-access memory (RAM). Memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures, and accessible by a computer, but is not limited thereto. The memory in the embodiments of this application can also be a circuit or any other device capable of implementing storage functions, used to store program instructions and / or data.

[0123] In one possible implementation, the computing device 1000 can be applied to a transmitting end. Specifically, the computing device 1000 can be a transmitting end or an apparatus capable of supporting the transmitting end and implementing the functions of the transmitting end in any of the above embodiments. The memory 1120 stores the necessary computer programs, computer programs or instructions and / or data for implementing the functions of the transmitting end in any of the above embodiments. The processor 1110 can execute the computer programs stored in the memory 1120 to complete the methods executed by the transmitting end in any of the above embodiments. Applied to the transmitting end, the communication interface in the computing device 1000 can be used to interact with the receiving end, such as sending information to the receiving end.

[0124] In another possible implementation, the computing device 1000 can be applied to a receiving end. Specifically, the computing device 1000 can be a receiving end or an apparatus capable of supporting the receiving end and implementing the functions of the receiving end in any of the above embodiments. The memory 1120 stores the necessary computer programs, computer programs or instructions and / or data for implementing the functions of the receiving end in any of the above embodiments. The processor 1110 can execute the computer programs stored in the memory 1120 to complete the methods executed by the receiving end in any of the above embodiments. Applied to the receiving end, the communication interface in the computing device 1000 can be used to interact with the sending end, such as receiving information from the sending end.

[0125] Since the computing device 1000 provided in this embodiment can be applied to the sending end to complete the method executed by the sending end, or applied to the receiving end to complete the method executed by the receiving end, the technical effects it can achieve can be referred to the above method embodiments, and will not be repeated here.

[0126] Based on the above embodiments, this application also provides a computer program that, when run on a computer, enables the computer to perform... Figures 10 to 11 The method provided in the illustrated embodiments.

[0127] Based on the above embodiments, this application also provides a computer-readable storage medium storing a computer program, which, when executed by a computer, causes the computer to perform... Figures 10 to 11 The method provided in the illustrated embodiments. The storage medium can be any available medium accessible to a computer. For example, but not limited to, a computer-readable medium can include RAM, read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), CD-ROM or other optical disk storage, magnetic disk storage media, or other magnetic storage devices, or any other medium capable of carrying or storing desired program code having an instruction or data structure form and accessible to a computer.

[0128] The technical solutions provided in this application can be implemented, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented, in whole or in part, in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, an access network device, a terminal device, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media, etc.

[0129] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging gun, characterized in that, Includes a housing and a fuse protection device, wherein: The fusible protection device is disposed inside the housing and includes a protective housing and a fuse. The fuse is disposed inside the protective housing and includes a first end and a second end. The protective housing is provided with a first opening and a second opening. A ground wire is provided inside the housing. The ground wire includes a first part and a second part. The first part has a first connection terminal, and the second part has a second connection terminal. The first part is used to electrically connect to the ground wire of the charging pile, and the second part is used to electrically connect to the ground wire of the vehicle. The first connection terminal is electrically connected to the first end of the fuse through the first opening, and the second connection terminal is electrically connected to the second end of the fuse through the second opening.

2. The charging gun as described in claim 1, characterized in that, The protective shell includes a first shell and a second shell, which are detachably connected to form a receiving space for accommodating the fuse.

3. The charging gun as described in claim 1 or 2, characterized in that, The fuse protection device further includes a first card holder and a second card holder disposed within the protective shell. The first card holder is disposed near the first opening and electrically connected to the first connection end, and the second card holder is disposed near the second opening and electrically connected to the second connection end. The first end of the fuse is snapped into the first socket and electrically connected to the first socket, and the second end of the fuse is snapped into the second socket and electrically connected to the second socket.

4. The charging gun as described in claim 3, characterized in that, The fuse protection device further includes a first terminal and a second terminal disposed within the protective housing. The first terminal is used to electrically connect the first connection terminal to the first card holder, and the second terminal is used to electrically connect the second connection terminal to the second card holder.

5. The charging gun according to any one of claims 1 to 4, characterized in that, The inner wall of the protective shell is provided with a retaining rib, which is arranged around the circumference of the fuse and abuts against the outer wall of the fuse.

6. A charging pile, characterized in that, The device includes a power module and a charging gun. The power module is electrically connected to the vehicle's power battery through the charging gun to form a charging circuit. The charging gun includes a housing and a fuse protection device. The fuse protection device is disposed inside the housing and includes a protective shell and a fuse. The fuse is disposed inside the protective shell and includes a first end and a second end. The protective shell has a first opening and a second opening. A ground wire is disposed inside the housing. The ground wire includes a first part and a second part. The first part has a first connection end, and the second part has a second connection end. The first part is used for electrical connection with the ground wire of the charging pile, and the second part is used for electrical connection with the ground wire of the vehicle. The first connection end is electrically connected to the first end of the fuse through the first opening, and the second connection end is electrically connected to the second end of the fuse through the second opening. The fuse protection device is used to disconnect the first connection terminal from the second connection terminal when the charging gun electrode or the vehicle's power battery electrode is short-circuited to ground.

7. The charging pile as described in claim 6, characterized in that, The protective shell includes a first shell and a second shell, which are detachably connected to form a receiving space for accommodating the fuse.

8. The charging pile as described in claim 6 or 7, characterized in that, The fuse protection device further includes a first card holder and a second card holder disposed within the protective shell. The first card holder is disposed near the first opening and electrically connected to the first connection end, and the second card holder is disposed near the second opening and electrically connected to the second connection end. The first end of the fuse is snapped into the first socket and electrically connected to the first socket, and the second end of the fuse is snapped into the second socket and electrically connected to the second socket.

9. A charging system, characterized in that, The system includes a vehicle and a charging pile. The vehicle includes a power battery, and the charging pile includes a power module, a charging gun, and a charger controller. The power module and the power battery are connected through the charging gun to form a charging circuit. The charging gun includes a housing and a fuse protection device. The fuse protection device is disposed inside the housing and includes a protective shell and a fuse. The fuse is disposed inside the protective shell and includes a first end and a second end. The protective shell has a first opening and a second opening. A ground wire is disposed inside the housing. The ground wire includes a first part and a second part. The first part has a first connection end, and the second part has a second connection end. The first part is used to be electrically connected to the ground wire of the charging pile, and the second part is used to be electrically connected to the ground wire of the vehicle. The first connection end is electrically connected to the first end of the fuse through the first opening, and the second connection end is electrically connected to the second end of the fuse through the second opening. The charger controller is used to obtain the status of the fuse, and when the fuse is open, it disconnects the power module from the charging gun.

10. The charging system as described in claim 9, characterized in that, The protective shell includes a first shell and a second shell, which are detachably connected to form a receiving space for accommodating the fuse.

11. The charging system as described in claim 9 or 10, characterized in that, The fuse protection device further includes a first card holder and a second card holder disposed within the protective shell. The first card holder is disposed near the first opening and electrically connected to the first connection end, and the second card holder is disposed near the second opening and electrically connected to the second connection end. The first end of the fuse is snapped into the first socket and electrically connected to the first socket, and the second end of the fuse is snapped into the second socket and electrically connected to the second socket.

12. The charging system according to any one of claims 9 to 11, characterized in that, The vehicle also includes a vehicle controller; The charger controller is also used to periodically send a stop charging message to the vehicle controller; The vehicle controller is used to determine whether the charging current of the vehicle is less than a current threshold after receiving the charging stop message, and disconnect the power battery from the charging gun when the charging current is less than the current threshold.

13. The charging system according to any one of claims 9 to 11, characterized in that, The vehicle also includes a vehicle controller; The charger controller is also used to periodically send a stop charging message to the vehicle controller; The vehicle controller is used to determine whether the charging current of the vehicle is less than the current threshold after receiving the charging stop message. If the charging current is not less than the current threshold, the connection between the power battery and the charging gun is cut off after a set time.

14. The charging system according to any one of claims 9 to 13, characterized in that, The charging pile also includes a first resistor, a second resistor, and a power supply. The second connection terminal is electrically connected to a preset first detection point through the second resistor, and the first detection point is electrically connected to the power supply through the first resistor. The charger controller is also used to acquire the voltage at the first detection point, and when the voltage at the first detection point jumps to the voltage value of the power supply, it determines that the fuse is open.

15. A charging control method for a charging pile, characterized in that, The charging pile includes a power module and a charging gun. The power module is connected to the vehicle's power battery via the charging gun to form a charging circuit. The charging gun includes a housing and a fuse protection device. The fuse protection device is disposed inside the housing and includes a protective shell and a fuse. The fuse is disposed inside the protective shell and includes a first end and a second end. The protective shell has a first opening and a second opening. A ground wire is disposed inside the housing. The ground wire includes a first part and a second part. The first part has a first connection end, and the second part has a second connection end. The first part is used for electrical connection with the ground wire of the charging pile, and the second part is used for electrical connection with the ground wire of the vehicle. The first connection end is electrically connected to the first end of the fuse through the first opening, and the second connection end is electrically connected to the second end of the fuse through the second opening. The charging control method includes: Get the status of the fuse; When the fuse is tripped, the connection between the power module and the charging gun is severed.

16. The charging control method as described in claim 15, characterized in that, After disconnecting the power module from the charging pile, the charging control method further includes: Periodically send a stop charging message to the vehicle's controller.

17. The charging control method as described in claim 15 or 16, characterized in that, The charging pile also includes a first resistor, a second resistor, and a power supply. The second connection terminal is electrically connected to a preset first detection point through the second resistor, and the first detection point is electrically connected to the power supply through the first resistor. The charging control method further includes: Obtain the voltage at the first detection point; When the voltage at the first detection point jumps to the voltage value of the power supply, it is determined that the fuse is open.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 15 to 17.

19. A computer program product, characterized in that, Includes instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 15 to 17.

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