Charging gun, vehicle, thermal management system, single-gun thermal management control method and double-gun thermal management control method

Abstract

The invention relates to the technical field of electric vehicle charging guns, in particular to a charging gun, a vehicle, a thermal management system, a single-gun thermal management control method and a double-gun thermal management control method. The charging gun comprises a socket, the socket is used for being connected with a second charging gun, and the second charging gun is used for transmitting a heat conduction working medium to conduct heat management on a vehicle. By means of the technical scheme, the two charging guns can provide auxiliary heat management service for the vehicle at the same time, and the problem that the vehicle end / single pile heat management capacity of a single-gun charging vehicle is insufficient is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicle charging guns, and in particular relates to a charging gun, a vehicle, a thermal management system, a single-gun thermal management control method, and a dual-gun thermal management control method. Background Art

[0002] In the existing technology, the charging equipment can output direct current to the electric vehicle through the on-board charging connection device, and the liquid cooling medium in the liquid cooling equipment can transmit the liquid cooling medium to the thermal management system of the power battery in the electric vehicle through the on-board charging connection device. In this way, while the power battery of the electric vehicle is charged at high power, the liquid cooling medium can also be transmitted to the thermal management system of the power battery. However, it cannot solve the vehicle charging thermal management problem when the single pile pump power is insufficient. Summary of the Invention

[0003] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the first objective of the present invention is to provide a charging gun that connects to a second charging gun via its socket. The dual-gun thermal management system of the present invention, by adding a second charging gun, provides additional heat or cooling to enhance the heat dissipation and preheating of the vehicle and power battery. This design is particularly suitable for high-power charging scenarios and can effectively address the problem of a single-gun thermal management system being insufficient to meet the heat dissipation or preheating requirements of the vehicle and power battery.

[0004] A second object of the present invention is to provide a vehicle.

[0005] In order to solve the above problems, a first embodiment of the present invention provides a charging gun including a socket, wherein the socket is used to connect a second charging gun, and the second charging gun is used to transfer a heat conductive medium to perform thermal management on the vehicle.

[0006] In some embodiments, the system further includes a first heat transfer medium port, wherein the first heat transfer medium port includes a first heat transfer medium inlet and a first heat transfer medium outlet.

[0007] In some embodiments, a gun end plug is further included, wherein the gun end plug includes a gun end high-voltage cable port, a gun end signal line port, a gun end ground line interface and a first gun end signal interface; the gun end high-voltage cable port includes a gun end positive cable interface and a gun end negative cable interface; the first gun end signal line port includes a first gun end positive signal line interface and a first gun end negative signal line interface.

[0008] In some embodiments, the socket includes a second gun end signal line port; the second gun end signal line port includes a second gun end positive signal line interface and a second gun end negative signal line interface, and the second end positive signal line interface and the second gun end negative signal line interface are used to connect the second charging gun.

[0009] In some embodiments, the socket further includes a second heat-conducting working fluid port; the second heat-conducting working fluid port includes a second heat-conducting working fluid inlet and a second heat-conducting working fluid outlet, and the second heat-conducting working fluid inlet and the second heat-conducting working fluid outlet are used to connect to the second charging gun.

[0010] A second aspect of the present invention provides a vehicle.

[0011] In some embodiments, it includes a vehicle-end charging port, the vehicle-end charging port includes a vehicle-end high-voltage cable port, a vehicle-end signal line port, a vehicle-end ground line interface and a vehicle-end heat conduction medium port; the vehicle-end high-voltage cable port includes a vehicle-end positive cable interface and a vehicle-end negative cable interface; the vehicle-end signal line port includes a gun vehicle-end positive signal line interface and a vehicle-end negative signal line interface; the vehicle-end heat conduction medium port includes a vehicle-end heat conduction medium inlet and a vehicle-end heat conduction medium outlet.

[0012] A third aspect of the present invention provides a thermal management system, comprising the above-mentioned charging gun and a vehicle.

[0013] In some embodiments, it includes a second charging gun, a first charging pile, and a second charging pile; the first end of the charging gun is connected to the vehicle, the second end of the charging gun is connected to the first charging pile, and the third end of the charging gun is connected to one end of the second charging gun; the other end of the second charging gun is connected to the second charging pile.

[0014] In some embodiments, the gun-end positive cable interface is connected to the vehicle-end positive cable interface; the gun-end negative cable interface is connected to the vehicle-end negative cable interface; the first gun-end positive signal line interface is connected to the vehicle-end positive signal line interface; the first gun-end negative signal line interface is connected to the vehicle-end negative signal line interface; the first heat conduction medium inlet is connected to the vehicle-end heat conduction medium outlet; the first heat conduction medium outlet is connected to the vehicle-end heat conduction medium inlet.

[0015] In some embodiments, the second charging gun includes a third gun end positive signal line interface, a third gun end negative signal line interface, a third heat conductive working medium outlet and a third heat conductive working medium inlet; the second gun end positive signal wiring port is connected to the third gun end positive signal line interface, the second gun end negative signal wiring port is connected to the third gun end negative signal line interface, the second heat conductive working medium outlet is connected to the third heat conductive working medium inlet, and the second heat conductive working medium inlet is connected to the third heat conductive working medium outlet.

[0016] A fourth aspect of the present invention provides a single-gun thermal management control method suitable for the above-mentioned charging gun, vehicle and thermal management system.

[0017] In some embodiments, Step 1: mechanically connecting the charging gun to the vehicle-side charging port of the vehicle;

[0018] Step 2: The vehicle and the first charging pile exchange handshake messages through signals to confirm the vehicle-first charging pile connection, and the connection mode is vehicle-charging gun connection;

[0019] Step 3: The vehicle sends a charging request message and a thermal management request message to the first charging pile;

[0020] Step 4: The first charging pile charges the vehicle and delivers heat transfer medium. The heat transfer medium enters the vehicle for internal circulation and then returns to the first charging pile.

[0021] A fifth aspect of the present invention provides a dual-gun thermal management control method suitable for the above-mentioned charging gun, vehicle and thermal management system.

[0022] In some embodiments, Step 1: mechanically connecting the socket of the charging gun to the second charging gun;

[0023] Step 2: The first charging pile and the second charging pile exchange handshake messages through signals to confirm the connection between the first charging pile and the second charging pile, and the connection mode is charging gun to second charging gun connection;

[0024] Step 3: Determine whether the first charging pile has established a charging gun-vehicle connection; if the charging gun is connected to the vehicle, the first charging pile enters a dual-gun auxiliary thermal management mode, and the first charging pile sends a thermal management request message to the second charging pile;

[0025] Step 4: The second charging pile delivers heat transfer fluid to the charging gun. The heat transfer fluids of the first and second charging piles converge in the charging gun, circulate inside the vehicle, and then return to the first and second charging piles.

[0026] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1This is a schematic structural diagram of a charging gun provided in an embodiment of the present application;

[0029] Figure 2 This is a schematic diagram of the structure of a charging gun plug provided in an embodiment of the present application;

[0030] Figure 3 This is a structural diagram of a charging gun socket provided in an embodiment of the present application;

[0031] Figure 4 This is a schematic structural diagram of a vehicle-side charging port provided in an embodiment of the present application;

[0032] Figure 5 This is a schematic diagram of the connection between the charging gun plug and the vehicle-end charging port provided in an embodiment of the present application;

[0033] Figure 6 This is a connection diagram of a dual-gun thermal management system according to an embodiment of the present application;

[0034] Figure 7 This is a connection diagram of the second charging gun end plug and the charging gun end socket of an embodiment of the present application;

[0035] Figure 8 This is a connection diagram of a single-gun thermal management mode according to an embodiment of the present application;

[0036] Figure 9 This is a control logic diagram of the single-gun thermal management mode of an embodiment of the present application;

[0037] Figure 10 This is a connection diagram of the dual-gun thermal management mode of an embodiment of the present application;

[0038] Figure 11 This is a control logic diagram of the dual-gun thermal management mode of an embodiment of the present application;

[0039] Reference numerals:

[0040] 3-Charging gun;

[0041] 4- Gun end plug; 41: Gun end ground wire interface; 42: Gun end positive cable interface; 43: Gun end negative cable interface; 44: First gun end positive signal line interface; 45: First gun end negative signal line interface; 46- First heat transfer medium inlet; 47- First heat transfer medium outlet;

[0042] 5-socket; 52: second gun end positive signal line interface; 53: second gun end negative signal line interface; 54: second heat transfer medium inlet; 55: second heat transfer medium outlet;

[0043] 6 - Vehicle-side charging port; 61 - Vehicle-side ground wire interface; 62 - Vehicle-side positive cable interface; 63 - Vehicle-side negative cable interface; 64 - Vehicle-side positive signal line interface; 65 - Vehicle-side negative signal line interface; 66 - Vehicle-side heat transfer medium inlet; 67 - Vehicle-side heat transfer medium outlet;

[0044] 7 - Gun end plug of the second charging gun; 71 - Third gun end positive signal line interface; 72 - Third gun end negative signal line interface; 73 - Third heat transfer medium outlet; 74 - Third heat transfer medium inlet; DETAILED DESCRIPTION

[0045] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0046] In the present invention, unless otherwise specified, the terms "inside" and "outside" refer to the outline of the corresponding component itself, and "far" and "near" refer to the distance between the reference object and the reference object. In addition, terms such as "first" and "second" used in the present invention are intended to distinguish one element from another and do not have a sequential or significant nature. In the following description, when referring to the drawings, unless otherwise specified, the same reference numerals in different drawings indicate the same or similar elements. The above definitions are intended only to explain and illustrate the present invention and should not be construed as limiting the scope of the present invention.

[0047] A liquid-cooled charging station is a charging system that integrates charging equipment and liquid cooling. It not only outputs DC power to the electric vehicle via an onboard charging connector, but also transfers a liquid cooling medium to the electric vehicle's power battery thermal management system via the liquid cooling system. This design effectively meets the heat dissipation requirements of the power battery during high-power charging, enabling fast charging and reducing charging times. The charging equipment outputs DC power to the electric vehicle via the onboard charging connector. The charging equipment typically includes a high-voltage DC power supply, a charging control unit, and a charging interface. These components work together to ensure efficient and safe transmission of electrical energy to the vehicle's battery system. The liquid cooling system transfers the liquid cooling medium to the electric vehicle's power battery thermal management system via the onboard charging connector. The liquid cooling system includes a coolant circulation system, a coolant storage tank, a pump, and coolant piping. The coolant (such as a water-ethylene glycol mixture) circulates under the pump, absorbing heat generated by the battery and dissipating it to the radiator. The onboard charging connector connects the charging station to the electric vehicle, enabling the transfer of electrical energy and cooling medium. The connection device typically includes a charging gun plug 4 and a socket 5, as well as a coolant inlet and return port. These interface designs comply with international and domestic standards to ensure a safe and reliable connection.

[0048] In view of this, an embodiment of the present application provides a charging gun 3, including a socket 5, wherein the socket 5 is used to connect a second charging gun, and the second charging gun is used to input a heat-conducting working medium to perform thermal management on the vehicle.

[0049] Reference Figure 1 and 7 , Figure 1 This is a schematic diagram of the structure of a charging gun 3 provided in an embodiment of the present application. The present invention relates to a novel charging gun 3 that not only provides traditional charging functions but also integrates thermal management capabilities. By adding a socket 5 to the charging gun 3, this socket 5 can be connected to a second charging gun for inputting a heat-conducting fluid (such as coolant or heating fluid), thereby jointly managing the thermal state of the vehicle and its power battery. Through the coordinated operation of the charging gun 3 and the second charging gun, this system not only provides power transmission but also integrates thermal management capabilities. This design is particularly suitable for high-power charging scenarios in electric and hybrid vehicles, effectively addressing the issues of battery heat dissipation and heating during high-power charging, while also improving charging efficiency and safety. The main body of the charging gun 3 is used to connect to the vehicle's charging port to transmit power and a heat-conducting fluid. The socket 5 is used to connect to a second charging gun for inputting a heat-conducting fluid. The second charging gun is used to input a heat-conducting fluid to thermally manage the vehicle and its power battery. The gun-end plug 7 of the second charging gun is used to connect to the socket 5 of the charging gun 3 and a piping system is used to transmit the heat-conducting fluid. Thermal transfer fluids absorb or release heat generated by batteries, ensuring they operate within a safe temperature range. These fluids can be coolants (such as a water or ethylene glycol mixture) or heating fluids with high thermal conductivity and specific heat capacity.

[0050] In this embodiment, a first heat transfer medium port is further included, and the first heat transfer medium port includes a first heat transfer medium inlet 46 and a first heat transfer medium outlet 47 .

[0051] See also Figure 2 The charging gun 3 also includes a first heat transfer medium port, which includes a first heat transfer medium inlet 46 and a first heat transfer medium outlet 47 to ensure the circulation of the heat transfer medium. By adding a heat transfer medium inlet and outlet to the charging gun 3, the charging gun 3 can input and output heat transfer medium (such as coolant or heating liquid). Through an efficient heat dissipation system, the battery can operate safely at a higher charging power, achieving rapid charging. By precisely controlling the flow and temperature of the heat transfer medium, the battery is ensured to always remain within a safe temperature range during the charging process, improving the safety of the charging process.

[0052] In this embodiment, the charging gun 3 also includes a gun end plug 4, which includes a gun end high-voltage cable port, a gun end signal line port and a gun end ground line interface 41; the gun end high-voltage cable port includes a gun end positive cable interface 42 and a gun end negative cable interface 43; the first gun end signal line port includes a first gun end positive signal line interface 44 and a first gun end negative signal line interface 45.

[0053] See also Figure 2 and Figure 8 The gun end plug 4 is used to connect to the vehicle end charging interface 6 of the vehicle to transmit power and signals. The gun end plug 4 includes a gun end high-voltage cable port, a gun end signal line port and a gun end ground line port 41; the gun end high-voltage cable port is used to transmit high-voltage power, and the gun end positive cable port 42 is used to connect to the vehicle's positive high-voltage cable. The gun end negative cable port 43 is used to connect to the vehicle's negative high-voltage cable. The gun end signal line port is used to transmit control signals and communication signals. The first gun end positive signal line port 44 is used to connect to the vehicle's positive signal line. The first gun end negative signal line port 45 is used to connect to the vehicle's negative signal line. The gun end ground line port 41 is used for grounding to ensure the safety of the charging process. Provide a ground connection to ensure electrical safety during the charging process. Charging process: The charging gun 3 is connected to the vehicle's charging interface through the gun end plug 4, and high-voltage power is transmitted through the gun end high-voltage cable port; control signals and communication signals are transmitted through the gun end signal line port to ensure the stability and safety of the charging process; grounding is achieved through the gun end ground line port 41 to ensure electrical safety during the charging process.

[0054] In this embodiment, the socket 5 includes a second gun end signal line port, which includes a second gun end positive signal line interface 52 and a second gun end negative signal line interface 53. The second end positive signal line interface 52 and the second gun end negative signal line interface 53 are used to connect the second charging gun.

[0055] See also Figure 3The second gun end signal line port includes a second gun end positive signal line interface 52 and a second gun end negative signal line interface 53, which are used to connect the second charging gun to realize bidirectional transmission of signals. When necessary, two charging guns 3 can be used to perform thermal management on the vehicle to ensure efficient operation of the system. Dual-gun thermal management refers to the use of two charging guns 3 for simultaneous thermal management during the charging process. This solution is suitable for high-power charging scenarios, especially when fast charging and efficient thermal management are required. Usage scenarios: 1. Public charging station (high power): Users use high-power charging piles for fast charging at public charging stations. The charging power is usually between 150kW and 250kW or even higher, and the thermal management requirements are high. Dual-gun thermal management can effectively handle the heat generated by high-power charging to ensure the safety and efficiency of the charging process. 2. Large commercial fleets: Large commercial fleets perform fast charging during peak hours. The charging power is high and the thermal management requirements are high. Dual-gun thermal management can meet the fast charging needs of large fleets, reduce downtime, and improve operational efficiency. 3. High-performance electric vehicles: High-performance electric vehicles (such as the Tesla Model S Plaid and BYD Han L) require fast charging. The high charging power and thermal management requirements are stringent. Dual-charger thermal management ensures that the battery remains within a safe temperature range during high-power charging, extending battery life.

[0056] In this embodiment, the socket 5 further includes a second heat-conducting working medium port; the second heat-conducting working medium port includes a second heat-conducting working medium inlet 54 and a second heat-conducting working medium outlet 55, and the second heat-conducting working medium inlet 54 and the second heat-conducting working medium outlet 55 are used to connect to the second charging gun.

[0057] See also Figure 3 During high-power charging, the power battery will generate a large amount of heat. The charging gun 3 inputs heat-conducting working fluid through the first heat-conducting working fluid port to dissipate heat from the vehicle's power battery. The heat-conducting working fluid absorbs the heat generated by the battery through the vehicle's power battery thermal management system and transfers it to the radiator for release. In a low-temperature environment, the charging gun 3 can input heating liquid through the first heat-conducting working fluid port to preheat the battery and ensure that the battery operates within an appropriate temperature range. When a single gun cannot meet the heat dissipation or preheating requirements of the power battery, dual guns can be used for thermal management: the second charging gun is connected through the second heat-conducting working fluid port of the socket 5 to input and output heat-conducting working fluid. The second heat-conducting working fluid port includes a second heat-conducting working fluid inlet 54 and a second heat-conducting working fluid outlet 55 to ensure the circulation of the heat-conducting working fluid. Through dual-gun thermal management, the thermal management efficiency can be further improved to meet the needs of higher-power charging.

[0058] In order to implement the above embodiment, the embodiment of the present invention also proposes a vehicle, including a vehicle-end charging port 6; the vehicle-end charging port 6 includes a vehicle-end high-voltage cable port, a vehicle-end signal line port, a vehicle-end ground line interface 61 and a vehicle-end heat conduction medium port; the vehicle-end high-voltage cable port includes a vehicle-end positive cable interface 62 and a vehicle-end negative cable interface 63; the vehicle-end signal line port includes a gun vehicle-end positive signal line interface 64 and a vehicle-end negative signal line interface 65; the vehicle-end heat conduction medium port includes a vehicle-end heat conduction medium inlet 66 and a vehicle-end heat conduction medium outlet 67.

[0059] See also Figure 4 、 Figure 5 and Figure 8The vehicle-side charging port 6 is used to connect to the charging gun 3 and transmit electrical energy and heat transfer fluid. The vehicle-side charging port 6 includes a vehicle-side high-voltage cable port, a vehicle-side signal line port, a vehicle-side ground wire interface 61, and a vehicle-side heat transfer fluid port. The vehicle-side high-voltage cable port is used to transmit high-voltage electrical energy and includes a vehicle-side positive cable interface 62 and a vehicle-side negative cable interface 63. The vehicle-side positive cable interface 62 is used to connect to the positive high-voltage cable of the charging gun 3. The vehicle-side negative cable interface 63 is used to connect to the negative high-voltage cable of the charging gun 3. The vehicle-side signal line port is used to transmit control signals and communication signals and includes a vehicle-side positive signal line interface 64 and a vehicle-side negative signal line interface 65. The vehicle-side positive signal line interface 64 is used to connect to the positive signal line of the charging gun 3. The vehicle-side negative signal line interface 65 is used to connect to the negative signal line of the charging gun 3. The vehicle-side ground wire interface 61 is used for grounding to ensure the safety of the charging process. A ground connection is provided to ensure electrical safety during the charging process. The vehicle-side heat transfer fluid port is used to input and output heat transfer fluid. It includes a vehicle-side heat transfer fluid inlet 66 and a vehicle-side heat transfer fluid outlet 67, ensuring the circulation of the heat transfer fluid. The vehicle-side heat transfer fluid inlet 66 is connected to the heat transfer fluid outlet of charging gun 3. The vehicle-side heat transfer fluid outlet 67 is connected to the heat transfer fluid inlet of charging gun 3. Operating Principle: 1. Signal Line Confirmation (Communication Confirmation): When the gun-end plug 4 of the second charging gun is inserted into the gun-end socket 5 of charging gun 3, the second charging gun is connected to the signal line of charging gun 3 via the signal line. The two charging guns 3 communicate via the signal line to confirm the connection status and ensure that the heat transfer fluid transmission channel is connected correctly. The communication process follows standardized communication protocols (such as CCS, CHAdeMO, etc.) to ensure accurate and reliable data transmission. 2. Heat Transfer: After the connection is confirmed, the second charging gun transfers heat transfer fluid to the gun-end heat transfer fluid inlet of charging gun 3 via the gun-end heat transfer fluid outlet. The heat-conducting working fluid passes through the heat-conducting working fluid transmission channel of the charging gun 3 and is ultimately connected to the vehicle through the heat-conducting working fluid transmission inlet and outlet of the charging gun 3, providing auxiliary thermal management services for the vehicle. The heat-conducting working fluid pumps of the two charging piles work together to provide a larger flow rate to meet the thermal management needs of the vehicle. By connecting the heat-conducting working fluid transmission channels of the two charging piles in parallel, a larger flow rate can be provided to meet the thermal management needs of the vehicle. The intelligent communication and collaborative work between the charging piles provide users with a more convenient and efficient charging experience. This dual-gun thermal management mode enables the charging guns 3 of the two charging piles to work together through mechanical and electrical connections, providing more efficient thermal management services for the vehicle. This mode is particularly suitable for fast charging stations and high-power charging scenarios, and is one of the important development directions of electric vehicle charging technology.

[0060] In order to implement the above embodiment, the embodiment of the present invention further proposes a thermal management system, which includes the above-mentioned charging gun 3 for a vehicle and a vehicle.

[0061] In this embodiment, see Figure 6 、 Figure 8 and Figure 10 The thermal management system includes a second charging gun, a first charging pile and a second charging pile; the first end of the charging gun 3 is connected to the vehicle, the second end of the charging gun 3 is connected to the first charging pile, and the third end of the charging gun 3 is connected to one end of the second charging gun; the other end of the second charging gun is connected to the second charging pile.

[0062] The physical connection between charging piles is primarily achieved through cables and connectors, ensuring the transmission of power and data. High-voltage cables are used to transmit high-power electricity and are typically used in DC fast-charging piles. Low-voltage cables are used to transmit control signals and communication data and are typically used in AC slow-charging piles. Data cables, such as Ethernet cables or optical fibers, are used to transmit communication signals. The plug 4 and socket 5 at the end of the charging gun 3 are used to connect a second charging gun to the electric vehicle. Common standards include GB / T and IEC 62196. Intermediate connectors are used to connect multiple charging piles, enabling power and data sharing between them. For example, in this embodiment, the first and second charging piles are part of the first charging pile, and the second charging gun is part of the second charging pile. It should be noted that the charging gun 3 and the second charging gun can be the same or different; the first and second charging piles can also be the same or different. The power of the heat transfer fluid pump at each charging pile is limited, so the heat transfer fluid flow provided by a single charging gun 3 may not be sufficient to meet the vehicle's thermal management requirements. When the thermal management of a single gun is not enough to meet the heat dissipation or preheating requirements of the power battery, the second charging gun is plugged into the socket 5 of the charging gun 3 to provide additional heat conduction fluid (such as coolant or heating fluid) for the second charging pile to meet the heat dissipation and preheating requirements of the power battery under high-power charging or low-temperature environments. The dual-gun thermal management mode is as follows: Parallel heat conduction fluid cables: The heat conduction fluid cables of the two charging piles are connected in parallel so that the two charging piles can provide heat conduction fluid to the vehicle at the same time. Operation steps: 1. Insert the idle charging gun 3: Insert the second charging gun of the idle charging pile (second charging pile) into the gun end socket 5 of the current charging gun 3. 2. Parallel cables: By connecting the heat conduction fluid cables of the two charging piles in parallel, the heat conduction fluid systems of the two charging piles work together. 3. Synchronous control: The heat conduction fluid pumps of the two charging piles work synchronously to provide a larger flow rate to meet the thermal management needs of the vehicle.

[0063] In this embodiment, see Figure 5The gun-end positive cable interface 42 is connected to the vehicle-end positive cable interface 62; the gun-end negative cable interface 43 is connected to the vehicle-end negative cable interface 63; the first gun-end positive signal line interface 44 is connected to the vehicle-end positive signal line interface 64; the first gun-end negative signal line interface 45 is connected to the vehicle-end negative signal line interface 65; the first heat conduction medium inlet 46 is connected to the vehicle-end heat conduction medium outlet 67; the first heat conduction medium outlet 47 is connected to the vehicle-end heat conduction medium inlet 66.

[0064] Among them, the gun-end plug 4: The gun-end positive cable interface 42 is used to connect to the vehicle's vehicle-end positive cable interface 62 to ensure the transmission of high-voltage power. The gun-end negative cable interface 43 is used to connect to the vehicle's vehicle-end negative cable interface 63 to ensure the transmission of high-voltage power. The first gun-end positive signal line interface 44 is used to connect to the vehicle's vehicle-end positive signal line interface 64 to transmit control signals and communication signals. The first gun-end negative signal line interface 45 is used to connect to the vehicle's vehicle-end negative signal line interface 65 to transmit control signals and communication signals. The first heat conductive working medium inlet 46 is used to connect to the vehicle's vehicle-end heat conductive working medium outlet 67 to input heat conductive working medium. The first heat conductive working medium outlet 47 is used to connect to the vehicle's vehicle-end heat conductive working medium inlet 66 to output heat conductive working medium. The charging gun 3 is connected to the vehicle-end charging port 6 of the vehicle through the gun-end plug 4, transmitting high-voltage power through the high-voltage cable interface. The charging gun 3 transmits control signals and communication signals through the signal line interface to ensure the stability and safety of the charging process. After the charging vehicle and the charging pile are confirmed to be connected through the signal line, the charging pile charges the car through the high-voltage cable port at the gun end according to the needs of the charging vehicle, providing charging services for the vehicle. At the same time, through the heat conduction medium transmission cable, the heat conduction medium that has been cooled / heated is provided to the charging vehicle, providing auxiliary thermal management services for the vehicle.

[0065] During high-power charging, the power battery will generate a lot of heat. The charging gun 3 inputs coolant through the heat transfer working fluid port to dissipate heat from the vehicle's power battery. In a low-temperature environment, the charging gun 3 can input heating liquid through the heat transfer working fluid port to preheat the battery and ensure that the battery operates within an appropriate temperature range. The liquid cooling system can effectively absorb the heat generated by the battery to ensure the safe operation of the battery during high-power charging. The liquid cooling system is more efficient than the traditional air cooling system and can handle higher heat loads. Batteries will accelerate aging when running at high temperatures. The liquid cooling system reduces thermal damage by keeping the battery within an appropriate temperature range. By effectively dissipating heat, thermal damage to the battery is reduced and the battery life is extended.

[0066] In this embodiment, see Figure 7The second charging gun includes a third gun-end positive signal line interface 71, a third gun-end negative signal line interface 72, a third heat conductive working medium outlet 73 and a third heat conductive working medium inlet 74; the second gun-end positive signal wiring port 52 is connected to the third gun-end positive signal line interface 71, the second gun-end negative signal wiring port 53 is connected to the third gun-end negative signal line interface 72, the second heat conductive working medium outlet 55 is connected to the third heat conductive working medium inlet 74, and the second heat conductive working medium inlet 54 is connected to the third heat conductive working medium outlet.

[0067] The dual-gun thermal management system of the present invention adds a second charging gun, providing an additional heat transfer medium (such as coolant or heating fluid) to enhance the heat dissipation and preheating of the power battery. This design is particularly suitable for high-power charging scenarios and can effectively solve the problem of a single-gun thermal management system being insufficient to meet the heat dissipation or preheating requirements of the power battery. The connection between the charging gun 3 and the gun-end plug 7 of the second charging gun is as follows: Signal line connection: The second gun-end positive signal connection port 52 of the charging gun 3 socket 5 is connected to the third gun-end positive signal line port 71 of the second charging gun; the second gun-end negative signal connection port 53 of the charging gun 3 socket 5 is connected to the third gun-end negative signal line port 72 of the second charging gun. Heat transfer medium connection: The second heat transfer medium outlet 55 of the charging gun 3 socket 5 is connected to the third heat transfer medium inlet 74 of the second charging gun; the second heat transfer medium inlet 54 of the charging gun 3 socket 5 is connected to the third heat transfer medium outlet 73 of the second charging gun. One end of the charging gun 3 is connected to the vehicle-end charging port 6 through its high-voltage cable and signal line, and the first heat conduction working fluid port is connected to the vehicle-end heat conduction working fluid port to transmit power, control signals and thermal management support; the second charging gun is connected to the socket 5 of the charging gun 3 through its signal line and second heat conduction working fluid port to provide additional thermal management support.

[0068] In this embodiment, see Figure 8Figure 1 shows the control logic for the single-charger thermal management mode. Step 1: The charging gun 3's plug 4 and the vehicle's socket 5 detect a mechanical connection. Operation: The user inserts the charging gun 3's plug 4 into the vehicle's socket 5. Detection Mechanism: Mechanical Connection Detection: Both the charging gun 3's plug 4 and the vehicle's socket 5 are equipped with internal mechanical connection sensors. When the plug 4 is fully inserted into the socket 5, the sensor detects the mechanical connection. Signal Feedback: Once the mechanical connection is complete, the charging gun 31 sends a low-level signal to the charging pile through its internal circuitry, indicating that the connection has been established. Step 2: Operation: After the mechanical connection is complete, the vehicle and charging pile begin communicating via the signal line. Communication Process: Handshake Request: The vehicle sends a handshake request message to the charging pile via the signal line. The message contains basic vehicle information (such as vehicle model, battery type, and maximum charging power). Handshake Response: After receiving the handshake request, the charging pile verifies the information and sends a handshake response message to the vehicle to confirm the successful connection. Step 3: Operation: After the handshake is completed, the vehicle sends charging requests and thermal management requests to the charging pile based on its needs. Request Content: Charging Request Message: Contains the vehicle's charging requirements, such as charging power, voltage, and current. Thermal Management Request Message: Contains the vehicle's thermal management requirements, such as the temperature and flow rate of the heat transfer fluid. Step 4: Operation: High-voltage Charging: The charging station provides power to the vehicle via a high-voltage wiring harness to meet the vehicle's charging requirements. Thermal Management Service: The charging station transfers the heat transfer fluid from the storage device to the vehicle via the fluid cable. The vehicle's internal thermal management system recycles the fluid and regulates the battery temperature.

[0069] In this embodiment, see Figure 9, which is the control logic diagram for the dual-charger thermal management mode; Step 1: Operation: The user inserts the plug 4 of the second charging gun into the socket 5 of charging gun 3. Detection Mechanism (Mechanical Connection Detection): The socket 5 of charging gun 3 and the plug 4 of the second charging gun are equipped with mechanical connection sensors. When the plug 4 is fully inserted into the socket 5, the sensor detects the completion of the mechanical connection. Signal Feedback: Once the mechanical connection is complete, charging gun 3 sends a low-level signal to the first charging pile through internal circuitry, indicating that the connection has been established. Step 2: Operation: After the mechanical connection is completed, the first and second charging piles begin communicating via the signal line. Communication Process: Handshake Request: The first charging pile sends a handshake request message to the second charging pile via the signal line. The message contains basic information about the first charging pile (such as model and maximum output power). Handshake Response: After receiving the handshake request, the second charging pile verifies the information and sends a handshake response message to the first charging pile to confirm the successful connection. Step 3: Operation: The first charging pile verifies via the signal line whether a vehicle-to-charger connection has been established with the vehicle. Detection Mechanism: Signal Detection: The first charging station sends a detection signal to the vehicle via the signal line. The vehicle returns a confirmation signal after receiving the signal. Connection Confirmation: After receiving the vehicle's confirmation signal, the first charging station confirms that the vehicle-to-charger connection has been established. Entering Dual-Charge Assisted Thermal Management Mode: Communication Process: Thermal Management Request: The first charging station sends a thermal management request message to the second charging station via the signal line. The message contains parameters such as the temperature and flow rate of the heat transfer fluid. Request Confirmation: After receiving the request, the second charging station verifies the parameters and sends a confirmation message to the first charging station, indicating that it is ready to provide thermal management services. Step 4: Operation: Fluid Transfer: The second charging station delivers the heat transfer fluid to charging gun 3 via the thermal management cable. Convergence: The heat transfer fluids from the first and second charging stations merge within charging gun 3. Circulation: The merged heat transfer fluid enters the vehicle through the fluid cable, circulates through the vehicle's thermal management system, and then returns to the fluid storage devices of the first and second charging stations. Technical Details: Heat Transfer Fluid: The heat transfer fluid stored in the fluid storage devices of the first and second charging stations should have good thermal conductivity and chemical stability. Circulation system: The vehicle's internal thermal management system includes a coolant circulation pump, radiator, heat exchanger, and other components to ensure efficient circulation of the working fluid within the vehicle. Temperature control: Sensors at the primary and secondary charging stations monitor the working fluid's temperature in real time to ensure it remains within the optimal operating temperature range.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0072] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0073] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0074] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0075] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A charging gun, characterized in that: include: The socket is used to connect a second charging gun, and the second charging gun is used to transfer a heat-conducting medium to perform thermal management on the vehicle.

2. The charging gun according to claim 1, characterized in that Also includes: The first heat transfer working medium port includes a first heat transfer working medium inlet and a first heat transfer working medium outlet.

3. The charging gun according to claim 2, characterized in that: Also includes: A gun end plug, the gun end plug including a gun end high voltage cable port, a gun end signal line port, a gun end ground wire interface and a first gun end signal interface; The gun end high voltage cable port includes a gun end positive cable interface and a gun end negative cable interface; The first gun end signal line port includes a first gun end positive signal line interface and a first gun end negative signal line interface.

4. The charging gun according to claim 1, characterized in that The socket includes a second gun end signal line port; the second gun end signal line port includes a second gun end positive signal line interface and a second gun end negative signal line interface, and the second end positive signal line interface and the second gun end negative signal line interface are used to connect the second charging gun.

5. The charging gun according to claim 4, characterized in that: The socket further includes a second heat conducting medium port; The second heat-conducting working medium port includes a second heat-conducting working medium inlet and a second heat-conducting working medium outlet, and the second heat-conducting working medium inlet and the second heat-conducting working medium outlet are used to connect to the second charging gun.

6. A vehicle, characterized in that: include: The vehicle-side charging port includes a vehicle-side high-voltage cable port, a vehicle-side signal line port, a vehicle-side ground wire interface, and a vehicle-side heat transfer medium port; The vehicle-end high-voltage cable port includes a vehicle-end positive cable interface and a vehicle-end negative cable interface; The vehicle-end signal line port includes a gun vehicle-end positive signal line interface and a vehicle-end negative signal line interface; The vehicle-end heat transfer medium port includes a vehicle-end heat transfer medium inlet and a vehicle-end heat transfer medium outlet.

7. A thermal management system, characterized in that: Comprising the charging gun according to any one of claims 1 to 5 and the vehicle according to claim 6.

8. The thermal management system according to claim 7, characterized in that: include: a second charging gun, a first charging pile, and a second charging pile; The first end of the charging gun is connected to the vehicle, the second end of the charging gun is connected to the first charging pile, and the third end of the charging gun is connected to one end of the second charging gun; The other end of the second charging gun is connected to the second charging pile.

9. The thermal management system according to claim 8, characterized in that: The positive cable interface at the gun end is connected to the positive cable interface at the vehicle end; the negative cable interface at the gun end is connected to the negative cable interface at the vehicle end; the positive signal line interface at the first gun end is connected to the positive signal line interface at the vehicle end; the negative signal line interface at the first gun end is connected to the negative signal line interface at the vehicle end; the first heat conduction medium inlet is connected to the heat conduction medium outlet at the vehicle end; and the first heat conduction medium outlet is connected to the heat conduction medium inlet at the vehicle end.

10. The thermal management system according to claim 9, characterized in that: The second charging gun includes a third gun end positive signal line interface, a third gun end negative signal line interface, a third heat transfer medium outlet and a third heat transfer medium inlet; The second gun end positive signal wiring port is connected to the third gun end positive signal line interface, the second gun end negative signal wiring port is connected to the third gun end negative signal line interface, the second heat conduction working medium outlet is connected to the third heat conduction working medium inlet, and the second heat conduction working medium inlet is connected to the third heat conduction working medium outlet.

11. A single-gun thermal management control method, applicable to the charging gun according to any one of claims 1 to 5, the vehicle according to claim 6, and the thermal management system according to any one of claims 7 to 10, characterized in that: Step 1: The charging gun is mechanically connected to the vehicle charging port; Step 2: The vehicle and the first charging pile exchange handshake messages through signals to confirm the vehicle-first charging pile connection, and the connection mode is vehicle-charging gun connection; Step 3: The vehicle sends a charging request message and a thermal management request message to the first charging pile; Step 4: The first charging pile charges the vehicle and delivers heat transfer medium. The heat transfer medium enters the vehicle for internal circulation and then returns to the first charging pile.

12. A dual-gun thermal management control method, applicable to the charging gun according to any one of claims 1-5, the vehicle according to claim 6, and the thermal management system according to any one of claims 7-10, characterized in that: Step 1: Mechanically connect the socket of the charging gun to the second charging gun; Step 2: The first charging pile and the second charging pile exchange handshake messages through signals to confirm the connection between the first charging pile and the second charging pile, and the connection mode is charging gun to second charging gun connection; Step 3: Determine whether the first charging pile has established a charging gun-vehicle connection; if the charging gun is connected to the vehicle, the first charging pile enters a dual-gun auxiliary thermal management mode, and the first charging pile sends a thermal management request message to the second charging pile; Step 4: The second charging pile delivers heat transfer fluid to the charging gun. The heat transfer fluids of the first and second charging piles converge in the charging gun, circulate inside the vehicle, and then return to the first and second charging piles.

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