Charging terminal and charging system

Abstract

The application provides a charging terminal and a charging system. The charging terminal comprises a charging gun, a first pipeline, a pipeline box, a condenser and a compressor. The pipeline box is internally provided with a cable connection interface, a first pipeline interface and a second pipeline interface. The charging gun is internally provided with a power line electrically connected with the cable connection interface. The power line receives direct current through the cable connection interface and is used for charging an energy storage device. The first pipeline is located in the charging gun. At least part of the first pipeline is arranged in parallel with the power line. The inlet and outlet of the first pipeline are located at the same end of the charging gun and are respectively communicated with the first pipeline interface and the second pipeline interface. The first pipeline is used for circulating refrigerant. The condenser is communicated with the compressor and is respectively communicated with the first pipeline interface and the second pipeline interface. The refrigerant can circulate between the compressor, the condenser and the first pipeline to cool the power line. The charging terminal provided by the application has high cooling efficiency for the charging gun and the charging gun is convenient to disassemble and assemble.

Description

Technical Field

[0001] This application relates to the energy field, and in particular to a charging terminal and charging system. Background Technology

[0002] With the rapid development of new energy vehicles, the driving range of electric vehicles is gradually increasing. To address range anxiety, high-power DC fast charging has become one of the mainstream solutions. As the charging power of the charging gun increases, the current flowing through it also increases, leading to significant heat generation. To solve these problems, the industry has generally focused on charging guns using liquid cooling, which involves circulating water-based antifreeze or cooling oil inside the charging gun. However, this cooling method carries risks of leakage and short circuits, or even fires, and is also relatively expensive. Summary of the Invention

[0003] This application provides a charging terminal and a charging system.

[0004] In a first aspect, this application provides a charging terminal, which includes a charging gun, a first pipeline, a cable box, a condenser, and a compressor:

[0005] The junction box is equipped with a cable connection interface, a first conduit interface, and a second conduit interface;

[0006] The charging gun is equipped with a power line. One end of the power line is electrically connected to the cable connection interface. It receives DC power through the cable connection interface and outputs DC power through the other end of the power line. The DC power output by the power line is used to charge the energy storage device.

[0007] The first pipeline is located inside the charging gun, and at least a portion of the first pipeline is arranged in parallel with the power line. The inlet and outlet of the first pipeline are located at the same end of the charging gun, and the inlet of the first pipeline is connected to the first pipeline interface, and the outlet of the first pipeline is connected to the second pipeline interface. The first pipeline is used to supply refrigerant flow.

[0008] The condenser is connected to the compressor and to the first pipeline interface, while the compressor is connected to the second pipeline interface, so that the refrigerant can flow between the compressor, the condenser, and the first pipeline to cool the power line.

[0009] In this application, on the one hand, the refrigerant that has undergone the compression refrigeration cycle is directly introduced into the first pipeline to cool the power line and achieve the cooling of the charging gun. This implementation method has strong cooling capacity and can quickly cool the power line, thereby improving the heat dissipation capacity of the charging gun. At the same time, only one cooling system is required, resulting in lower costs.

[0010] On the other hand, the refrigerant in this application is generally a fluorinated alkane such as Freon. Such refrigerants are usually non-conductive and non-flammable. Even if the refrigerant leaks, it will not cause a short circuit in the power line or other circuits or cause the charging gun to catch fire, thus improving the safety of the charging operation. At the same time, the refrigerant has a low boiling point and is easy to volatilize. After the refrigerant leaks, it can be quickly converted into other substances and evaporated outside the charging gun, without causing adverse effects on the circuits inside the charging gun.

[0011] On the other hand, by setting up a conduit box, firstly, the power lines and the first conduit inside the charging gun are all centrally connected to the conduit box, making the conduit layout of the charging terminal more organized and facilitating the installation of the charging gun. Secondly, the power lines inside the charging gun are electrically connected to the internal components of the charging terminal via cable connection interfaces. The inlet and outlet of the first conduit are connected to the condenser and compressor inside the charging terminal via first and second conduit interfaces, allowing the charging gun and the first conduit to be separated from the main body of the charging terminal. The first conduit can be pre-integrated into the charging gun, and during the transportation of the charging terminal, the charging gun and the first conduit can be disassembled separately, facilitating the transportation of the charging terminal. During the assembly of the charging terminal's conduit, the charging gun and the first conduit can be directly connected to the conduit box, achieving quick installation of the charging gun and the first conduit. Furthermore, when the charging gun or the first conduit malfunctions and requires maintenance, the charging gun and the first conduit can also be disassembled separately for easy repair. Finally, the charging gun and the main body of the charging terminal can be separated, so that the charging gun can be used as a separate module. This makes the charging gun compatible with various models of charging terminals, with a wide range of applications. It also allows for pre-charging of refrigerant and debugging of the charging gun before it leaves the factory, reducing on-site installation and debugging time.

[0012] In one possible implementation, the charging terminal further includes a PG connector, with one end of the charging gun passing through the PG connector and connecting to the junction box. The PG connector is a sealed and waterproof joint used to seal the connection between the charging gun and the junction box, improving the reliability of the charging terminal's piping connection.

[0013] In one possible implementation, the charging terminal further includes a second conduit, which sequentially connects to a second conduit interface, a compressor, a condenser, and a first conduit interface. A portion of the second conduit exists between the second conduit interface and the compressor, between the compressor and the condenser, and between the condenser and the first conduit interface. By providing the second conduit and connecting both ends of the second conduit to a junction box, refrigerant circulates within the second and first conduits. The second conduit facilitates the flow of refrigerant between the compressor and the condenser, thereby cooling the refrigerant flowing out of the first conduit outlet. The cooled refrigerant then re-enters the first conduit through its inlet and is used again to cool the power lines.

[0014] In one possible implementation, the charging terminal further includes a charging cable, one end of which receives DC power output from the charging host, and the other end of which is electrically connected to a cable connection interface. The DC power output from the charging host is transmitted sequentially through the charging cable, the cable connection interface, and the power line to the energy storage device to charge it.

[0015] In one possible implementation, the charging gun also includes a communication cable, through which the charging gun and the energy storage device are connected. The charging gun receives or identifies the charging voltage and current required by the energy storage device via the communication cable, and feeds back the received or identified information to the charging host. The charging host outputs an appropriate charging voltage and current to the charging gun at the charging terminal based on the received information, and then charges the energy storage device through the power line inside the charging gun.

[0016] In one possible implementation, the pipeline box is further provided with a signal connection interface, and the communication cable includes a first communication segment and a second communication segment. The first communication segment is located inside the charging gun, and the two ends of the first communication segment are respectively used for communication connection with the signal connection interface and the energy storage device. The two ends of the second communication segment are respectively used for communication connection with the signal connection interface and the charging host.

[0017] In one possible implementation, the charging gun further includes a charging cable and a connector located at one end of the charging cable adjacent to the cable box. The connector is provided with a power terminal, a first conduit connector, and a second conduit connector. One end of the power cable is electrically connected to the power terminal, the inlet of the first conduit is connected to the first conduit connector, and the outlet of the first conduit is connected to the second conduit connector. When the connector is inserted into the cable box, the power terminal is electrically connected to the cable connection interface, the first conduit connector is connected to the first conduit interface, and the second conduit connector is connected to the second conduit interface. In this implementation, by providing a connector, inserting the connector into the cable box simultaneously connects both the first conduit and the power cable to the cable box, making the connection between the charging gun and the cable box more convenient.

[0018] In one possible implementation, the connector is detachably connected to the conduit box. This allows the connector to be quickly detached from or connected to the conduit box, thus simplifying the installation process. The detachable connection methods between the connector and the conduit include, but are not limited to, threaded connections, snap-fit ​​connections, and hinged connections.

[0019] In one possible implementation, the charging terminal includes a housing, within which the compressor, condenser, and cable box are all located. The housing has an opening, and the cable box is located inside the opening. One end of the power cable passes through the opening and is electrically connected to the cable connection interface. The inlet of the first conduit passes through the opening and communicates with the first conduit interface, and the outlet of the first conduit passes through the opening and communicates with the second conduit interface. Positioning the cable box inside the opening allows the inlet and outlet of the first conduit to communicate with the first and second conduit interfaces within the cable box after passing through the opening, facilitating installation.

[0020] In one possible implementation, the charging gun includes a connected head and a charging cable. The head is located at the end of the charging cable away from the cable box. The inlet and outlet of the first conduit are both located at the end of the charging cable away from the head. Half the length of the first conduit is greater than or equal to the length of the charging cable. Providing a relatively long first conduit ensures sufficient cooling of the power cable, achieving better heat dissipation.

[0021] In one possible implementation, the first conduit includes a first section, a bent section, and a second section connected sequentially. The end of the first section away from the bent section is connected to the first conduit interface, and the end of the second section away from the bent section is connected to the second conduit interface. The charging terminal also includes a support member located at the bent section to support it. Providing a support member at the bent section prevents blockage of the bent section due to prolonged bending, or prevents other components within the charging gun from pressing against the bent section and causing blockage. This application, by providing a support member to support the bent section, ensures smooth refrigerant flow within the first conduit, guaranteeing effective cooling of the power line.

[0022] In one possible implementation, the first conduit includes a first section and a second section, and the charging terminal further includes a U-shaped connector located between and connecting the first and second sections. The end of the first section away from the U-shaped connector is connected to the first conduit interface, and the end of the second section away from the U-shaped connector is connected to the second conduit interface. By using the U-shaped connector, the relatively flexible first conduit avoids bending, allowing the refrigerant to flow smoothly within the first section, the U-shaped connector, and the second section, thus improving the heat dissipation performance of the power line.

[0023] In one possible implementation, the power line has a cavity, and the first conduit is located within the cavity. By placing the first conduit within the power line, the contact area between the first conduit and the power line is large, allowing heat generated by the power line to be quickly transferred to the first conduit. As the refrigerant flows within the first conduit, the heat on the power line is quickly carried away to cool the power line.

[0024] In one possible implementation, the power line includes a positive power line and a negative power line. The positive power line has a first sub-cavity, and the negative power line has a second sub-cavity. The first conduit includes a first section, a second section, and a third section. One end of the first section and the third section are connected to the first conduit interface, and the other end of the first section and the third section are connected to one end of the second section. The other end of the second section is connected to the second conduit interface. The first section is located within the first sub-cavity, and the third section is located within the second sub-cavity. The refrigerant flows sequentially from the first conduit interface to the first section, the bend section, and the second section, and then flows out to the second conduit interface. The refrigerant passes through the positive power line and the negative power line successively to carry away the heat on the positive power line and the negative power line.

[0025] In one possible implementation, the positive power line has a first sub-cavity, and the negative power line is a solid cable. A first section of the first conduit is located within the first sub-cavity of the positive power line, and refrigerant flowing through the first section cools the positive power line. A second section contacts the negative power line to cool it. In this case, a thermally conductive material can be filled inside the cable housing, allowing the second section to make full contact with the negative power line through the thermally conductive material, thereby improving the cooling effect on the negative power line.

[0026] In one possible implementation, the first conduit includes a first section and a second section connected together. One end of the first section is connected to a first conduit interface, and the other end of the first section is connected to one end of the second section. The other end of the second section is connected to a second conduit interface. The first section is a flexible hose, and the second section is formed by the inner wall of the charging gun housing, the outer wall of the power line, and the outer wall of the first section. Refrigerant flows sequentially through the first and second sections to dissipate heat from the power line. In this embodiment, the remaining space inside the charging gun is fully utilized to form the second section of the first conduit. On the one hand, this reduces the need for a flexible hose, decreasing the size of the charging gun and saving costs. On the other hand, the refrigerant in the second section directly contacts the power line, without needing to indirectly contact it through the pipe wall. This direct contact allows the refrigerant to cool the power line more quickly. Furthermore, the second section, formed by the inner wall of the charging gun housing and the outer wall of the power line, provides a larger contact area between the refrigerant and the power line, which is more conducive to heat dissipation.

[0027] In one possible implementation, the charging gun includes a charging cable housing and a thermally conductive material, wherein the power line, the first conduit, and the thermally conductive material are located within the charging cable housing, and the thermally conductive material fills the space between the inner wall of the charging cable housing and the outer wall of the power line, between the inner wall of the charging cable housing and the outer wall of the first conduit, and between the outer wall of the power line and the outer wall of the first conduit.

[0028] In one possible implementation, the housing is provided with an air inlet, and the charging terminal further includes a fan located between the condenser and the air inlet. The fan drives external cold air to flow through the condenser to dissipate heat and thus cool the refrigerant within it. In this implementation, the fan's location between the condenser and the air inlet allows external cold air to directly blow onto the condenser, improving its cooling effect.

[0029] In one possible implementation, the enclosure includes a first side plate and a second side plate arranged opposite to each other along a first direction. The air inlet is located on the first side plate, and the second side plate has an air outlet. The cable box is fixed to the inner side of the second side plate. A fan drives external air into the enclosure through the air inlet. After heat exchange with the condenser, the fan drives the air inside the enclosure to be discharged from the air outlet to the outside of the enclosure, thereby achieving air circulation between the inside and outside of the enclosure. In this implementation, the location where the power terminals and cable connection interfaces in the cable box generate significant heat. Placing the cable box and air outlet on the second side plate allows the airflow from the air outlet to cool the cable box.

[0030] In one possible implementation, the compressor is located between the condenser and the junction box in the first direction, resulting in a neat piping layout.

[0031] In one possible implementation, the charging terminal further includes an expansion valve located between and connecting the condenser and the first pipeline interface. The expansion valve reduces the pressure of the refrigerant after cooling by the condenser. The expansion valve functions as a throttling valve and controls the refrigerant flow rate. After being throttled by the expansion valve, the high-temperature, high-pressure liquid refrigerant becomes a low-temperature, low-pressure mist-like refrigerant, creating conditions for refrigerant evaporation. Simultaneously, the expansion valve controls the refrigerant flow rate, ensuring that the refrigerant is fully vaporized in the first pipeline while maintaining refrigeration efficiency. The refrigerant flowing out to the second pipeline interface is entirely gaseous, saving energy and preventing damage to refrigeration equipment such as compressors.

[0032] Secondly, this application provides a charging system, which includes a charging host and a charging terminal as described in any of the above claims. The power line is capable of receiving DC power output from the charging host for charging energy storage devices. Using the charging terminal of this application to charge energy storage devices improves charging efficiency by cooling the charging gun, and reduces the cost of the charging system by simplifying the installation and maintenance of the charging gun board. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0034] Figure 1 This is a schematic diagram of a charging system provided in one embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the electrical connections of a charging system provided in one embodiment of this application;

[0036] Figure 3 A schematic diagram of a charging terminal provided in one embodiment;

[0037] Figure 4 A schematic diagram of a cooling system provided in one embodiment;

[0038] Figure 5 A schematic diagram of the charging terminal provided in the first embodiment of this application;

[0039] Figure 5a A schematic diagram of a charging terminal housing portion provided in an embodiment of this application;

[0040] Figure 6 This is a partial schematic diagram of the charging terminal provided in the first embodiment of this application;

[0041] Figure 7 This is a partial schematic diagram of the charging terminal provided in the first embodiment of this application;

[0042] Figure 8 A schematic diagram of the charging terminal provided in the first embodiment of this application;

[0043] Figure 9 A schematic diagram of the first pipeline provided in the first embodiment of this application;

[0044] Figure 10 A schematic diagram of the first pipeline provided in the first embodiment of this application;

[0045] Figure 11 A cross-sectional view of the charging gun provided in the first embodiment of this application;

[0046] Figure 12This is a partial schematic diagram of the charging terminal provided in the second embodiment of this application;

[0047] Figure 13 A schematic diagram of the connector provided in the second embodiment of this application;

[0048] Figure 14 A schematic diagram of the charging gun and connector provided in the second embodiment of this application;

[0049] Figure 15 A schematic diagram of the charging gun and connector provided in the second embodiment of this application;

[0050] Figure 16 A schematic diagram of the connector provided in the second embodiment of this application;

[0051] Figure 17 This is a cross-sectional view of the charging gun provided in the third embodiment of this application;

[0052] Figure 18 This is a cross-sectional view of the charging gun provided in the third embodiment of this application;

[0053] Figure 19 This is a cross-sectional view of the charging gun provided in the third embodiment of this application;

[0054] Figure 20 A schematic diagram of the first pipeline provided in the third embodiment of this application;

[0055] Figure 21 This is a cross-sectional view of the charging gun provided in the fourth embodiment of this application;

[0056] Figure 22 This is a cross-sectional view of the charging gun provided in the fourth embodiment of this application;

[0057] Figure 23 This is a cross-sectional view of the charging gun provided in the fourth embodiment of this application. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0059] In this document, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0060] Furthermore, in this article, directional terms such as "upper" and "lower" are defined relative to the orientation of the structure as shown in the attached drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the structure.

[0061] This application provides a charging terminal, comprising a charging gun, a first pipeline, a pipeline box, a condenser, and a compressor. The pipeline box contains a cable connection interface, a first pipeline interface, and a second pipeline interface. The charging gun contains a power line, one end of which is electrically connected to the cable connection interface. The power line receives direct current (DC) through the cable connection interface and outputs DC through the other end, which is used to charge an energy storage device. The first pipeline is located within the charging gun, and at least a portion of the first pipeline is arranged parallel to the power line. The inlet and outlet of the first pipeline are located at the same end of the charging gun, with the inlet connected to the first pipeline interface and the outlet connected to the second pipeline interface. The first pipeline is used for refrigerant flow. The condenser is connected to the compressor and to the first pipeline interface, while the compressor is connected to the second pipeline interface, allowing the refrigerant to flow between the compressor, the condenser, and the first pipeline to cool the power line. The charging terminal provided in this application has high cooling efficiency for the charging gun and is easy to install and remove.

[0062] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a charging system 1 provided in one embodiment of this application. Figure 2 This is a schematic diagram of the electrical connections of a charging system 1 provided in one embodiment of this application. The charging system 1 includes a charging host 20 and charging terminals 10. The charging host 20 converts AC power into DC power and provides the DC power to the charging terminals 10. The DC power then charges energy storage devices 30 via the charging terminals 10. In one embodiment, one charging host 20 can simultaneously supply power to multiple charging terminals 10, and one charging terminal 10 can simultaneously charge multiple energy storage devices 30.

[0063] The charging host 20 is the core component for energy conversion and power distribution. It typically consists of an AC input power interface, a number of charging modules, a power distribution unit, a charging station monitoring system, a casing, and components that provide necessary auxiliary functions (such as lighting, ventilation, environmental monitoring, and access control). The charging terminal 10 is used for information exchange, energy transmission, metering and billing, and charging control between the charging host 20 and the energy storage device 30.

[0064] In one embodiment, the charging host 20 is used to connect electrically to mains power or industrial electrical equipment, receiving 220V AC mains power or 380V AC industrial power. The charging host 20 converts the 220V AC or 380V AC power into DC power and then charges the energy storage device 30 through the charging terminal 10. The circuit for the charging host 20 to charge the energy storage device 30 through the charging terminal 10 is as follows: Figure 2 As indicated by "DC", the power transmitted between the charging host 20 and the charging terminal 10, and between the charging terminal 10 and the energy storage device 30 is direct current.

[0065] In this embodiment, the charging terminal 10 is also used for communication connection with the charging host 20 and the energy storage device 30, enabling communication between the charging host 20 and the energy storage device 30. The charging terminal 10 acquires the charging voltage or charging current required by the energy storage device 30 and sends the required charging voltage or charging current to the charging host 20. The charging host 20 converts the AC power into the required charging voltage or charging current and transmits the required charging voltage or charging current to the charging terminal 10. The charging terminal 10 transmits the required charging voltage or charging current to the energy storage device 30 through the charging gun, supplying power to the energy storage device 30. The DC power includes charging information such as charging voltage, charging current, or charging time. The signal interaction diagram of the communication connection between the charging host 20 and the energy storage device 30 through the charging terminal 10 is shown below. Figure 2 As shown in the “Communication Connection” section, there is a communication connection between the charging host 20 and the charging terminal 10, and a communication connection between the charging terminal 10 and the energy storage device 30.

[0066] The charging host 20 is also electrically connected to the charging terminal 10 to supply power to the charging terminal 10, enabling it to operate normally. The circuitry for supplying power from the charging host 20 to the charging terminal 10 is as follows: Figure 2 As shown in "AC".

[0067] In one embodiment, different circuit modules or functional modules are provided within the charging host 20 to enable the charging host 20 not only to supply power to the charging terminal 10, but also to charge the energy storage device 30 through the charging terminal 10. For example, the charging host 20 is provided with a DC input source 21 and an AC input source 22 (e.g., ...). Figure 2 (As shown). The DC input source 21 of the charging host 20 is used to convert 220V AC power into DC power and transmit it to the charging terminal 10. The DC power is then transmitted to the energy storage device 30 for charging via the charging gun of the charging terminal 10 (e.g., ...). Figure 2 (As shown). The AC input source 22 of the charging host 20 is used to provide 220V AC power to the charging terminal 10, wherein the 220V AC power can be converted into DC power by the auxiliary power source in the charging terminal 10 to power the devices inside the charging terminal 10 (such as...). Figure 2(As shown). Generally, in the charging terminal 10, the voltage of the DC power used to charge the energy storage device 30 is greater than the voltage of the DC power used to supply power to the devices within the charging terminal 10. For example, the voltage of the DC power used to charge the energy storage device 30 is 400V, and the voltage of the DC power used to supply power to the devices within the charging terminal 10 is 12V or 24V.

[0068] In this embodiment, the DC input source 21 and the AC input source 22 are integrated into the charging host 20. In some embodiments, the DC input source 21 and the AC input source 22 may also be set separately.

[0069] In one embodiment, when the charging system 1 is used to charge the vehicle, the energy storage device 30 can be the battery pack in the vehicle, the charging host 20 can charge the battery pack through the charging terminal 10, the electrical energy provided by the charging terminal 10 can be stored in the battery pack, and the electrical energy stored in the battery pack can supply power to vehicle loads such as the vehicle's compressor, battery heating module, seat heating module, power system, instrument panel, control display screen, headlights, and USB interface through the vehicle's power distribution unit.

[0070] Vehicles, in this context, refer to wheeled vehicles that are driven or towed by a power unit and used for carrying people or goods on roads, or for specialized engineering operations. Vehicles include two-wheeled, three-wheeled, or four-wheeled vehicles, and include electric vehicles, cars, SUVs, buses, trucks, etc. Vehicles also include various special-purpose vehicles with specific functions, such as emergency rescue vehicles, water trucks, sewage suction trucks, cement mixer trucks, crane trucks, and medical vehicles. Vehicles can also be moving robots.

[0071] In one embodiment, the charging system 1 can also be applied to other transportation equipment, such as aircraft and ships, and the energy storage device 30 is an energy storage battery in the aircraft or ship. In other embodiments, the charging system 1 can also be applied to other electronic devices to power the energy storage device 30 in other electronic devices, and is not limited to application in vehicles.

[0072] In one embodiment, the vehicle's battery pack is equipped with a Battery Management System (BMS), and the charging terminal 10 can communicate with the BMS. The BMS uses sensors to monitor the voltage, current, and temperature of the battery pack in real time. It also performs leakage detection, thermal management, battery equalization management, alarm reminders, calculates the remaining capacity (SOC) and discharge power, reports the battery degradation level (SOH) and remaining capacity (SOC) status, and uses algorithms to control the maximum output power to obtain the maximum driving range based on the battery's voltage, current, and temperature. It also uses algorithms to control the charger to charge at the optimal current. It communicates in real time with the vehicle's main controller, motor controller, energy control system, vehicle display system, etc., through a bus interface.

[0073] The charging terminal 10 communicates with the battery management system to obtain the charging voltage and charging current required by the battery pack, and feeds the obtained information back to the charging host 20. The charging host 20 outputs a charging voltage and charging current adapted to the battery pack based on the received information, and then charges the battery pack through the charging terminal 10. In one embodiment, the charging terminal 10 can also obtain the battery pack's power status, and when the battery pack is fully charged or reaches a preset power value, it controls the charging host 20 to stop supplying power.

[0074] For example, when the vehicle requires a charging voltage of 400V and a charging current of 500A, the vehicle's battery management system communicates with the charging terminal 10 to transmit the charging information of 400V charging voltage and 500A charging current to the charging terminal 10. The charging terminal 10 transmits the charging information of 400V charging voltage and 500A charging current to the charging host 20. The charging host 20 converts 380V AC power (or 220V AC power) into a charging voltage of 400V and a charging current of 500A. The charging host 20 transmits the 400V charging voltage and 500A charging current to the charging terminal 10, and the charging gun of the charging terminal 10 charges the battery pack in the vehicle.

[0075] In some implementations, the vehicle is equipped with other controllers for communicating with the charging terminal 10 to control the charging voltage, charging current and charging time of the vehicle battery pack, etc. The charging terminal 10 is not limited to communicating with the battery management system.

[0076] In one embodiment, the charging host 20 and the charging terminal 10 are separately configured, and are connected for communication and electrical connection via cables. On one hand, the charging host 20 can output high voltage, such as 900V or higher, enabling fast charging of vehicles. Simultaneously, the charging host 20 provides a wider output voltage range, for example, 200V to 900V or even wider, adapting to various types of energy storage devices 30, thus broadening the application of the charging system 1. On the other hand, the charging system 1 is easily expandable. When the charging system 1 needs to be expanded to output a higher voltage, the charging host 20 can be directly expanded or replaced with a charging host 20 with a larger output voltage. Furthermore, the charging system 1 is flexible in its layout. Due to the small size of the charging terminal 10, when the charging system 1 is used in a confined space, the smaller charging terminal 10 can be placed in a preset position, while the charging host 20 can be placed in other positions to adapt to various application scenarios.

[0077] In other embodiments, the charging host 20 and the charging terminal 10 are integrated into one unit. The charging terminal 10 is an integrated charging pile. For example, the current integrated DC charging pile integrates the charging host 20 into the charging terminal 10. The charging terminal 10 receives 220V AC power (or 380V AC power) and converts it into 200-500V or 300-750V DC power before transmitting it to the energy storage device 30 for charging. At the same time, the charging terminal 10 can also convert the received 220V AC power into 12V or 24V DC power to power the internal devices of the charging terminal 10.

[0078] In other embodiments, the charging terminal 10 can also be an AC charging pile. After receiving AC power, the charging terminal 10 transmits the AC power to the energy storage device 30 to charge the energy storage device 30. In this case, the power line inside the charging gun 100 is used to transmit AC power.

[0079] The charging terminal 10 includes a charging gun 100 (e.g., Figure 3 As shown, the charging terminal 10 charges the energy storage device 30 through the charging gun 100. The charging gun 100 will generate heat during charging. In particular, in order to achieve fast charging of the energy storage device 30, the charging power of the charging terminal 10 is increased, and the DC current through the charging gun 100 reaches 500A or even more, which makes the heating of the charging gun 100 more serious. If the charging gun 100 is not cooled down in time, it is easy to cause the charging gun 100 to melt and thus damage the charging terminal 10 or the energy storage device 30.

[0080] In order to cool the charging gun 100, in one embodiment, such as Figure 3As shown, a pump 11, a water pipe 12, and a heat exchanger 13 are provided in the charging terminal 10. The water pipe 12 contains coolant, which is generally water-based antifreeze or cooling oil. Part of the water pipe 12 extends into the charging gun 100. The water pipe 12 and the heat exchanger 13 are connected. The pump 11 drives the coolant to flow in the water pipe 12. When the coolant with a lower temperature flows through the charging gun 100, it can carry away the heat inside the charging gun 100. The coolant with a higher temperature flows out of the charging gun 100 and into the heat exchanger 13. The heat exchanger 13 cools the coolant with a higher temperature. After cooling, the coolant with a lower temperature passes through the pump 11. The coolant continues to flow to the charging gun 100, and this cycle continues to cool the charging gun. While this method of cooling the charging gun 100 is simple, if the coolant is water, leaks in the water pipes can easily cause short circuits in the wiring inside the charging gun 100. This method requires high insulation of the water pipes, a large pump head, and is therefore costly. If cooling oil is used as the coolant, there is a risk of leakage and fire. Furthermore, cooling oil is expensive and has high resistance, which is not conducive to cooling the charging gun 100. On the other hand, the cooling capacity of the air-liquid heat exchanger is limited, the cooling speed is slow, and the air-liquid heat exchanger cannot lower the temperature of the coolant to a lower level. Furthermore, in... Figure 3 In the illustrated embodiment, the connector of the water pipe 12 and the connector of the power line inside the charging gun 100 are separately located inside the charging terminal 10. For example, the connector of the water pipe 12 is connected to the pump 11, which is located below the charging terminal 10. The connector of the power line inside the charging gun 100 is connected to the power distribution module 16, which is located above the charging terminal 10. The power distribution module 16 is used to transmit DC power to the power line inside the charging gun 100. When the connector of the water pipe 12 and the connector of the power line inside the charging gun 100 are separately located inside the charging terminal 10, it is not conducive to installation and maintenance.

[0081] In one implementation, such as Figure 4As shown, to improve the cooling effect of the charging gun 100, two cooling systems are set up in the charging terminal 10. The first cooling system 14 is equipped with a first heat exchanger, a compressor, and a condenser; the second cooling system 15 is equipped with a pump and a second heat exchanger. The pump and the second heat exchanger are connected by a pipeline, at least part of which is located inside the charging gun 100 and contains coolant, which is generally water-based antifreeze or cooling oil. The first heat exchanger can exchange heat with the second heat exchanger to cool the coolant in the second heat exchanger. The pump drives the coolant to flow in the pipeline, absorbing heat in the charging gun 100. The coolant with a higher temperature exchanges heat in the second heat exchanger. At the same time, the first heat exchanger exchanges heat with the second heat exchanger. The coolant with a higher temperature transfers heat to the second heat exchanger and then to the first heat exchanger to cool the coolant. The cooled coolant continues to circulate to cool the charging gun 100. This implementation improves the heat dissipation capacity of the charging gun 100 by setting up a first cooling system 14 to cool the second heat exchanger of the second cooling system 15. However, the total cost of the two systems is high and they occupy the volume of the charging terminal 10.

[0082] In this application, a charging terminal 10 with good heat dissipation is provided. The charging terminal 10 is equipped with a cooling system and uses liquid cooling to cool the charging gun 100. This can not only greatly improve the heat dissipation performance of the charging gun 100, but also improve the safety of charging operations and the convenience of maintenance and installation.

[0083] The charging terminal 10 of this application is described in detail below.

[0084] Please see Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the charging terminal 10 provided in the first embodiment of this application. Figure 6This is a partial schematic diagram of the charging terminal 10 provided in the first embodiment of this application. The charging terminal 10 includes a charging gun 100, a first pipeline 210, a cable box 300, a condenser 400, and a compressor 500. The cable box 300 is provided with a cable connection interface 310, a first pipeline interface 320, and a second pipeline interface 330. The charging gun 100 is provided with a power line 110. One end of the power line 110 is electrically connected to the cable connection interface 310, receives DC power through the cable connection interface 310, and outputs DC power through the other end of the power line 110. The DC power output by the power line 110 is used to charge the energy storage device 30. The first conduit 210 is located inside the charging gun 100, and at least a portion of the first conduit 210 is arranged parallel to the power line 110. The inlet and outlet of the first conduit 210 are located at the same end of the charging gun 100, and the inlet of the first conduit 210 is connected to the first conduit interface 320, while the outlet of the first conduit 210 is connected to the second conduit interface 330. The first conduit 210 is used for refrigerant flow. The condenser 400 is connected to the compressor 500, and the condenser 400 is connected to the first conduit interface 320, while the compressor 500 is connected to the second conduit interface 330, allowing refrigerant to flow between the compressor 500, the condenser 400, and the first conduit 210 to cool the power line 110.

[0085] The power line 110 is used to transmit direct current. The charging terminal 10 and the energy storage device 30 are electrically connected through the power line 110 in the charging gun 100, so that the charging terminal 10 can charge the energy storage device 30. The power line 110 generates heat when transmitting current. When the power of the current transmitted by the power line 110 increases, the heating of the power line 110 will become more serious.

[0086] The first conduit 210 is insulated and sealed from the power line 110. The inlet and outlet of the first conduit 210 can be connected to the first conduit interface 320 and the second conduit interface 330 using one of the following methods: threaded connection, flange connection, quick-connect coupling, etc. The first conduit 210 contains refrigerant with a low boiling point and high volatility. In one embodiment, the refrigerant is an air conditioning refrigerant, and its components include fluorocarbons such as Freon. In one embodiment, the refrigerant is R134A or R410A; in other embodiments, other types of refrigerants may also be used.

[0087] When the first pipe 210 is used to cool the power line 110, the inlet of the first pipe 210 receives a refrigerant with a lower temperature transmitted from the first pipe interface 320. When the refrigerant flows through the first pipe 210, it can absorb the heat generated by the power line 110. Then, the refrigerant flows out from the outlet of the first pipe 210 to the second pipe interface 330. The refrigerant flowing out from the second pipe interface 330 flows into the compressor 500. The compressor 500 can compress the refrigerant and transmit the refrigerant to the condenser 400. The condenser 400 can cool the refrigerant. The cooled refrigerant is transmitted to the first pipe interface 320 to cool the power line 110.

[0088] In this application, on the one hand, the refrigerant after the compression refrigeration cycle is directly introduced into the first pipeline 210 to cool the power line 110, thereby reducing the temperature of the charging gun 100. This implementation method has strong cooling capacity and can quickly cool the power line 110, thereby improving the heat dissipation capacity of the charging gun 100. At the same time, only one cooling system is required, resulting in lower cost.

[0089] On the other hand, the refrigerant in this application is generally a fluorinated alkane such as Freon. This refrigerant is usually non-conductive and non-flammable. Even if the refrigerant leaks, it will not cause a short circuit in the power line 110 or the charging gun 100, thus improving the safety of the charging operation. At the same time, the refrigerant has a low boiling point and is easy to volatilize. After the refrigerant leaks, it can be quickly converted into other substances and evaporate outside the charging gun 100, without causing adverse effects on the circuit inside the charging gun 100.

[0090] On the other hand, by setting up the conduit box 300, firstly, the power line 110 and the first conduit 210 inside the charging gun 100 are all centrally connected to the conduit box 300, making the conduit arrangement of the charging terminal 10 more organized and facilitating the installation of the charging gun 100. Secondly, the power line 110 inside the charging gun 100 is electrically connected to the inside of the charging terminal 10 through the cable connection interface 310, and the inlet and outlet of the first conduit 210 are connected to the condenser 400 and compressor 500 inside the charging terminal 10 through the first conduit interface 320 and the second conduit interface 330, so that the charging gun 100 and the first conduit 210 can be separated from the main body of the charging terminal 10. The first conduit 210 can be pre-integrated into the charging gun 100, and the charging gun 100 and the first conduit 210 can be disassembled separately during the transportation of the charging terminal 10, facilitating the transportation of the charging terminal 10. During the assembly of the charging terminal 10 piping, the charging gun 100 and the first piping 210 can be directly connected to the junction box 300, enabling quick installation of the charging gun 100 and the first piping 210. Furthermore, if the charging gun 100 or the first piping 210 malfunctions and requires maintenance, they can be removed separately for easy repair. Finally, the design allows for the separation of the charging gun 100 from the main body of the charging terminal 10, enabling the charging gun 100 to function as a separate module. This allows the charging gun 100 to be compatible with various models of the charging terminal 10, resulting in a wide range of applications. Additionally, the charging gun 100 can be pre-charged with refrigerant and pre-tested before leaving the factory, reducing on-site installation and testing time.

[0091] In one embodiment, the charging terminal 10 further includes a PG head 150 (e.g., Figure 6 As shown, the PG connector 150 is a sealed and waterproof connector. One end of the charging gun 100 passes through the PG connector 150 and connects to the junction box 300. The PG connector 150 is used to seal the connection between the charging gun 100 and the junction box 300, improving the reliability of the pipeline connection of the charging terminal 10. Here, PG stands for Pounding Guard, and the PG connector is also called a protective connector or cable connector.

[0092] In one embodiment, the charging terminal 10 further includes a second conduit 220 (e.g., Figure 5 and Figure 6As shown, the second pipe 220 sequentially connects to the second pipe interface 330, the compressor 500, the condenser 400, and the first pipe interface 320. There are portions of the second pipe 220 between the second pipe interface 330 and the compressor 500, between the compressor 500 and the condenser 400, and between the condenser 400 and the first pipe interface 320. By setting up the second pipe 220 and connecting both ends of the second pipe 220 to the pipe box 300, the refrigerant circulates within the second pipe 220 and the first pipe 210. The refrigerant circulates between the compressor 500 and the condenser 400 through the second pipe 220, thereby cooling the refrigerant flowing out of the first pipe 210. The cooled refrigerant then enters the first pipe 210 from the inlet and is used again to cool the power line 110.

[0093] In one embodiment, both ends of the second pipe 220 are provided with pipe connectors. The two pipe connectors of the second pipe 220 are respectively inserted into the first pipe interface 320 and the second pipe interface 330 to connect the two ends of the second pipe 220 with the first pipe interface 320 and the second pipe interface 330 respectively.

[0094] In one embodiment, the charging terminal 10 further includes a charging cable 170 (e.g., ...). Figure 6 As shown, one end of the charging cable 170 is used to receive DC power output from the charging host 20, and the other end of the charging cable 170 is used to electrically connect to the cable connection interface 310. The DC power output from the charging host 20 is transmitted to the energy storage device 30 through the charging cable 170, the cable connection interface 310, and the power line 110 in sequence to charge the energy storage device 30. In one embodiment, the charging terminal 10 is also provided with a power distribution module (not shown in the figure). The end of the charging cable 170 away from the cable connection interface 310 is electrically connected to the charging host 20 through the power distribution module to receive DC power.

[0095] In one embodiment, one end of the charging cable 170 is provided with a connection terminal, which is plugged into the cable connection interface 310 to electrically connect the charging cable 170 to the cable connection interface 310.

[0096] In one embodiment, the charging gun 100 also includes a communication cable 160 (e.g., Figure 7As shown, the charging gun 100 and the energy storage device 30 are connected via a communication cable 160. The charging gun 100 receives or identifies the charging voltage and charging current required by the energy storage device 30 through the communication cable 160, and feeds back the received or identified information to the charging host 20. The charging host 20 outputs an appropriate charging voltage and charging current to the charging gun 100 of the charging terminal 10 according to the received information, and then charges the energy storage device 30 through the power line 110 inside the charging gun 100. In one embodiment, the conduit box 300 is also provided with a signal connection interface 340. The communication cable 160 includes a first communication segment 161 and a second communication segment 162. The first communication segment 161 is located inside the charging gun 100, and its two ends are used for communication connection with the signal connection interface 340 and the energy storage device 30, respectively. The two ends of the second communication segment 162 are used for communication connection with the signal connection interface 340 and the charging host 20, respectively.

[0097] In one embodiment, the first conduit 210 can also be used to cool the communication cable 160. Generally speaking, the heat generated by the communication cable 160 is less than that generated by the power line 110. Compared with the communication cable 160, the first conduit 210 can be set closer to the power line 110 to better cool the power line.

[0098] In one possible implementation, the charging terminal 10 includes a housing 600 (e.g., Figure 5 As shown, the compressor 500, condenser 400, and junction box 300 are all located inside the housing 600. The housing 600 has an opening 601. The junction box 300 is located inside the opening 601. One end of the power line 110 passes through the opening 601 and is electrically connected to the cable connection interface 310. The inlet of the first pipeline 210 passes through the opening 601 and is connected to the first pipeline interface 320. The outlet of the first pipeline 210 passes through the opening 601 and is connected to the second pipeline interface 330. The opening 601 is located on one side of the housing 600 along the first direction X. The compressor 500 and condenser 400 are located on the side of the opening 601 away from the junction box 300 along the first direction X.

[0099] In one embodiment, the housing 600 is also provided with a door panel (not shown in the figure). When the door panel is in the closed state, the door panel covers the opening 601. When the charging gun 100 and the cable box 300 are in the separated state, closing the door panel can isolate the interior of the housing 600 from the exterior. When the door panel is in the open state, the cable box 300 is exposed so that the power line 110 and the first pipe 210 can be connected to the cable box 300.

[0100] In one embodiment, the cable box 300 can also be fixed to the outside of the housing 600. The cable box 300 includes a housing and a door panel. The door panel can be opened and closed with the housing. The cable connection interface 310, the first conduit interface 320 and the second conduit interface 330 are located within the receiving space formed by the housing and the door panel. When the charging gun 100 is separated from the cable box 300, the door panel is closed, and the cable box 300 can be relatively closed to protect the internal conduits of the cable box 300. When the charging gun 100 is connected to the cable box 300, the door panel is opened to expose the various interfaces inside the cable box 300, so as to facilitate the connection of the power line 110 and the first conduit 210 to the cable box 300.

[0101] In one embodiment, the housing 600 is located above the charging terminal 10, while components such as the charging control module, power distribution module, and wiring module in the charging terminal 10 may be located below the housing 600. In some embodiments, the housing 600 may also be located below the charging terminal 10.

[0102] Please see Figure 5a In one possible implementation, the housing 600 is provided with an air inlet 611, and the charging terminal 10 also includes a fan 700, which is located between the condenser 400 and the air inlet 611. The fan 700 drives external cold air to flow through the condenser 400 to dissipate heat from the condenser 400, thereby cooling the refrigerant in the condenser 400. In this implementation, the fan 700 is located between the condenser 400 and the air inlet 611, allowing external cold air to directly blow onto the condenser 400, improving the cooling effect on the condenser 400.

[0103] Continue reading Figure 5a In one possible implementation, the enclosure 600 includes a first side plate 610 and a second side plate 620 disposed opposite each other along a first direction X. An air inlet 611 is located on the first side plate 610, and an air outlet 621 is provided on the second side plate 620. A pipe box 300 is fixed to the inner side of the second side plate 620. A fan 700 drives external air into the enclosure 600 through the air inlet 611. After the air exchanges heat with the condenser 400, the fan 700 drives the air inside the enclosure 600 to be discharged to the outside of the enclosure 600 through the air outlet 621, thereby realizing air circulation between the inside and outside of the enclosure 600. In this implementation, the location where the power terminal 131 in the junction box 300 is electrically connected to the cable connection interface 310 generates a relatively large amount of heat. By placing the junction box 300 and the air outlet 621 on the second side plate 620, the air from the air outlet 621 can cool the junction box 300.

[0104] Continue reading Figure 5aIn one possible implementation, in the first direction X, the compressor 500 is located between the condenser 400 and the pipe box 300, resulting in a neat piping layout. In some embodiments, where neat piping is not a concern or the efficiency requirement for the condenser 400 is not high, the condenser 400 may also be located between the compressor 500 and the pipe box 300 in the first direction X (e.g., Figure 8 (As shown).

[0105] In one possible implementation, the charging terminal 10 also includes an expansion valve 800 (e.g., Figure 5 As shown, the expansion valve 800 is located between the condenser 400 and the first pipe interface 320 and connects the condenser 400 and the first pipe interface 320. The expansion valve 800 is used to reduce the pressure of the refrigerant after it has been cooled by the condenser 400. The expansion valve 800 has a throttling function and controls the refrigerant flow rate. After the high-temperature, high-pressure liquid refrigerant passes through the expansion valve 800, it becomes a low-temperature, low-pressure mist refrigerant, creating conditions for refrigerant evaporation. Simultaneously, the expansion valve 800 can control the refrigerant flow rate, ensuring that the refrigerant is fully vaporized in the first pipe 210 while maintaining refrigeration efficiency. The refrigerant flowing out to the second pipe interface 330 is entirely gaseous, saving energy and preventing damage to refrigeration equipment such as the compressor 500.

[0106] Please continue reading. Figure 5 In one embodiment, the first pipeline interface 320 transfers low-pressure, low-temperature liquid refrigerant to the first pipeline 210. The low-pressure, low-temperature liquid refrigerant absorbs heat generated by the power line 110 within the first pipeline 210 and vaporizes, transforming into low-pressure, low-temperature gaseous refrigerant. The low-pressure, low-temperature gaseous refrigerant is then extracted from the second pipeline interface 330 by the compressor 500. The compressor 500 compresses the low-pressure, low-temperature gaseous refrigerant into high-pressure, high-temperature gaseous refrigerant and sends the high-pressure, high-temperature gaseous refrigerant into the condenser 400. The condenser 400 exchanges heat with air to liquefy the high-pressure, high-temperature gaseous refrigerant into a medium-temperature, high-pressure liquid. At this time, the fan 700 operates, driving the cooler air outside the housing 600 into the housing 600, and expelling the gas inside the housing 600 that has heated up due to absorbing heat from the condenser 400. When the medium-temperature, high-pressure liquid refrigerant passes through the expansion valve 800, the expansion valve 800 can throttle and reduce pressure, causing the medium-temperature, high-pressure liquid refrigerant to be converted into a low-temperature, low-pressure liquid refrigerant. The low-temperature, low-pressure liquid refrigerant is transferred from the first pipeline interface 320 to the first pipeline 210. The refrigerant circulates between the first pipeline 210, the compressor 500, and the condenser 400 to cool the power line 110.

[0107] In one possible implementation, the charging gun 100 includes a connected gun head 101 and a charging cable 102 (e.g., ...). Figure 5and Figure 6 As shown, the nozzle 101 is located at the end of the cable 102 furthest from the junction box 300. The inlet and outlet of the first conduit 210 are both located at the end of the cable 102 furthest from the nozzle 101. Half the length of the first conduit 210 is greater than or equal to the length of the cable 102. At least a portion of the first conduit 210 is located inside the nozzle 101. The first conduit 210 is designed to be relatively long to ensure sufficient cooling of the power line 110, achieving better heat dissipation.

[0108] In one embodiment, half the length of the first conduit 210 is less than or equal to the length of the charging gun 100.

[0109] In other embodiments, the length of the first conduit 210 can be set according to the actual application scenario. Half of the length of the first conduit 210 can also be less than the length of the gun wire 102. The first conduit 210 can be entirely located within the gun wire 102.

[0110] In this embodiment, the first conduit 210 is a flexible hose.

[0111] Please see Figure 9 , Figure 9 This is a schematic diagram of the first conduit 210 provided in the first embodiment of this application. In one possible implementation, the first conduit 210 includes a first segment 211, a bent segment 213, and a second segment 212 connected in sequence. The end of the first segment 211 away from the bent segment 213 is connected to the first conduit interface 320 (in conjunction with...). Figure 6 The second segment 212, the end furthest from the bend segment 213, is connected to the second pipe interface 330; the charging terminal 10 also includes a support member 201, located at the bend segment 213, for supporting the bend segment 213. The first pipe 210 is a single, continuous pipe; the first segment 211 and the second segment 212 are straight or substantially straight; and the bend segment 213 is arc-shaped. Figure 9 The direction indicated by the middle arrow is the flow direction of the refrigerant. The refrigerant is delivered from the first pipe interface 320 of the pipe box 300 to the first section 211. The inlet of the first pipe 210 is located at the end of the first section 211 away from the bend section 213. The refrigerant flows towards the nozzle 101 in the first section 211. When it flows through the bend section 213, it changes its flow direction and flows back to the second pipe interface 330 of the pipe box 300 from the second section 212 away from the nozzle 101. The outlet of the first pipe 210 is located at the end of the second section 212 away from the bend section 213.

[0112] The support member 201 has a higher hardness than the first pipe 210. The support member 201 is provided at the bending section 213 to prevent the bending section 213 from becoming blocked due to being in a bent state for a long time, or to prevent other components in the charging gun 100 from squeezing the bending section 213 and causing it to become blocked. By providing the support member 201 to support the bending section 213, this application can ensure that the refrigerant flows smoothly in the first pipe 210 and ensure the cooling effect on the power line 110.

[0113] In one embodiment, the support member 201 may be disposed within the first conduit 210 (e.g., Figure 9 As shown, the support member 201 can support the inner wall of the first pipe 210. In other embodiments, the support member 201 may also be disposed on the outer side of the first pipe 210.

[0114] In one embodiment, at least a portion of the bent section 213 is located within the gun head 101, such that the first section 211 and the second section 212 are relatively long to adequately cool the power line 110.

[0115] Please see Figure 10 , Figure 10 This is a schematic diagram of the first conduit 210 provided in the first embodiment of this application. In one possible implementation, the first conduit 210 includes a first segment 211 and a second segment 212. The charging terminal 10 also includes a U-shaped connector 214, which is located between and connects the first segment 211 and the second segment 212. The end of the first segment 211 away from the U-shaped connector 214 is connected to the first conduit interface 320, and the end of the second segment 212 away from the U-shaped connector 214 is connected to the second conduit interface 330. The first segment 211 and the second segment 212 are straight pipes or substantially straight. The hardness of the U-shaped connector 214 is greater than that of the first segment 211 or the second segment 212. By setting the U-shaped connector 214, the relatively flexible first conduit 210 is prevented from bending, allowing the refrigerant to flow smoothly within the first segment 211, the U-shaped connector 214, and the second segment 212, thereby improving the heat dissipation performance of the power line 110.

[0116] Please see Figure 11 , Figure 11This is a cross-sectional view of the charging gun 100 provided in the first embodiment of this application. In one possible implementation, the charging gun 100 includes a charging cable housing 120 and a heat-conducting material 140. The power line 110, the first conduit 210, and the heat-conducting material 140 are located inside the charging cable housing 120. The heat-conducting material 140 fills the space between the inner wall of the charging cable housing 120 and the outer wall of the power line 110, between the inner wall of the charging cable housing 120 and the outer wall of the first conduit 210, and between the outer wall of the power line 110 and the outer wall of the first conduit 210. The charging cable housing 120 covers the outside of the power line 110 and the first conduit 210 to protect them. After the space inside the charging cable housing 120 accommodates the power line 110, the first conduit 210, and other conduits, some space remains unoccupied. The heat-conducting material 140 can fill part or all of the remaining space inside the charging cable housing 120. On the one hand, the thermally conductive material 140 can ensure that the positions of the power line 110 and the first pipe 210 are relatively fixed, avoiding the separation of the power line 110 and the first pipe 210 due to the shaking of the charging gun 100, which would affect the heat conduction efficiency. The setting of the thermally conductive material 140 can make the positions of the power line 110 and the first pipe 210 relatively stable during the use of the charging gun 100, so that the heat on the power line 110 can be stably and quickly transferred to the first pipe 210 to cool the power line 110. On the other hand, the setting of the thermally conductive material 140 increases the heat dissipation area of ​​the power line 110, which can accelerate the heat dissipation of the power line 110.

[0117] Please see Figure 12 and Figure 13 , Figure 12 This is a partial schematic diagram of the charging terminal 10 provided in the second embodiment of this application. Figure 13 This is a schematic diagram of the connector 130 provided in the second embodiment of this application. The second embodiment of this application provides a charging terminal 10. The difference from the first embodiment is that in the second embodiment, the charging gun 100 further includes a charging cable 102 and a connector 130 located at one end of the charging cable 102 adjacent to the cable box 300. The connector 130 is provided with a power terminal 131, a first pipe connector 132 and a second pipe connector 133. One end of the power cable 110 is electrically connected to the power terminal 131. The inlet of the first pipe 210 is connected to the first pipe connector 132 and the outlet of the first pipe 210 is connected to the second pipe connector 133. When the connector 130 is inserted into the cable box 300, the power terminal 131 is electrically connected to the cable connection interface 310, the first pipe connector 132 is connected to the first pipe interface 320, and the second pipe connector 133 is connected to the second pipe interface 330.

[0118] The connector 130 and the gun head 101 are located at both ends of the charging cable 102. By setting the connector 130, the first pipeline 210 and the power line 110 can be connected to the cable box 300 at the same time by plugging the connector 130 into the cable box 300, making the connection between the charging gun 100 and the cable box 300 more convenient.

[0119] In one embodiment, the connector 130 is detachably connected to the junction box 300. This allows the connector 130 to be quickly detached from or connected to the junction box 300, thus simplifying the installation process. The detachable connection methods between the connector 130 and the junction box 300 include, but are not limited to, threaded connections, snap-fit ​​connections, and hinged connections.

[0120] In one embodiment, the connector 130 is further provided with a signal terminal 134 (e.g., Figure 14 As shown), one end of the first communication segment 161 is connected to the signal terminal 134. When the connector 130 is plugged into the conduit box 300, the signal terminal 134 is connected to the signal connection interface 340.

[0121] In one embodiment, the power terminal 131, the first conduit connector 132, and the second conduit connector 133 can be metal plates. The cable connection interface 310, the first conduit interface 320, and the second conduit interface 330 are respectively matched with metal connection ports provided for the metal plates. When the connector 130 is inserted into the conduit box 300, the metal plate is inserted into the metal connection port to achieve electrical connection. In other embodiments, the structural forms of the power terminal 131, the first conduit connector 132, and the second conduit connector 133 can be configured as needed. The structural forms of the cable connection interface 310, the first conduit interface 320, and the second conduit interface 330 are respectively configured to correspond to the structural forms of the power terminal 131, the first conduit connector 132, and the second conduit connector 133, so that when the connector 130 is inserted into or separated from the conduit box 300, the power terminal 131, the first conduit connector 132, and the second conduit connector 133 can be stably connected to or quickly separated from the cable connection interface 310, the first conduit interface 320, and the second conduit interface 330, respectively.

[0122] Please see Figure 15 and Figure 16 , Figure 15 This is a schematic diagram of the charging gun 100 and the connector 130 provided in the second embodiment of this application. Figure 16 This is a schematic diagram of a connector provided in the second embodiment of this application. In one embodiment, the power line 110 includes a positive power line 111 and a negative power line 112 (e.g., ...). Figure 15As shown, the power terminal 131 includes a positive power terminal 1311 and a negative power terminal 1312. The cable connection interface 310 also includes a positive cable connection interface 311 and a negative cable connection interface 312. The two ends of the positive power line 111 are electrically connected to the positive power terminal 1311 and the energy storage device 30, respectively. The two ends of the negative power line 112 are electrically connected to the negative power terminal 1312 and the energy storage device 30, respectively. When the connector 130 is plugged into the conduit box 300, the positive power terminal 1311 is electrically connected to the positive cable connection interface 311, and the negative power terminal 1312 is electrically connected to the negative cable connection interface 312.

[0123] In such Figure 16 In the described embodiment, the positive power terminal 1311 and the negative power terminal 1312 are located on the upper and lower sides of the connector 130, the first conduit connector 132 and the second conduit connector 133 are located on the left and right sides of the connector 130, and the signal terminal 134 is located in the middle of the connector 130. This arrangement saves space in the connector 130. In other embodiments, the arrangement of the positive power terminal 1311 and the negative power terminal 1312, the first conduit connector 132 and the second conduit connector 133, and the signal terminal 134 on the connector 130 can be customized as needed.

[0124] Please see Figure 17 , Figure 17 This is a cross-sectional view of the charging gun 100 provided in the third embodiment of this application. The third embodiment of this application provides a charging terminal 10. The difference from the first embodiment is that in the third embodiment, a cavity 113 is provided inside the power line 110, and the first pipe 210 is located inside the cavity 113. The first pipe 210 is fitted to the inner wall of the power line 110, and the contact area between the first pipe 210 and the power line 110 is large. The heat generated by the power line 110 can be quickly transferred to the first pipe 210. As the refrigerant flows in the first pipe 210, the heat on the power line 110 is quickly carried away to cool the power line 110.

[0125] In one embodiment, the first conduit 210 is insulated, and the power line 110 includes multiple conductive cores 114 and an insulating layer 115 (e.g., Figure 17 As shown, multiple conductive cores 114 are coiled around the outside of the first conduit 210, and an insulating layer 115 is sleeved on the outside of the multiple conductive cores 114. The multiple conductive cores 114 are located between the insulating layer 115 and the first conduit 210 to insulate them from the external environment. In this application, by directly coiling the multiple conductive cores 114 around the outside of the first conduit 210, heat from the conductive cores 114 can be quickly transferred to the first conduit 210, achieving rapid heat dissipation of the power line 110.

[0126] Please see Figure 17In one possible implementation, the power line 110 includes a positive power line 111 and a negative power line 112. The positive power line 111 has a first sub-cavity 113a, and the negative power line 112 has a second sub-cavity 113b. The first conduit 210 includes a first segment 211, a bent segment 213, and a second segment 212 connected in sequence. The end of the first segment 211 away from the bent segment 213 is connected to the first conduit interface 320, and the end of the second segment 212 away from the bent segment 213 is connected to the second conduit interface 330. The first segment 211 and the second segment 212 are located in the first sub-cavity 113a and the second sub-cavity 113b, respectively. The refrigerant flows sequentially from the first pipe interface 320 to the first section 211, the bend section 213, and the second section 212, and then flows out to the second pipe interface 330. The refrigerant passes through the positive power line 111 and the negative power line 112 in sequence to carry away the heat on the positive power line 111 and the negative power line 112.

[0127] In this embodiment, the charging terminal 10 further includes a support member 201 located at the bend section 213 to support the bend section 213. In this embodiment, a U-shaped connector 241 may also be used instead of the bend section 213.

[0128] In other embodiments, the first segment 211 may also be located in the second sub-cavity 113b of the negative power line 112, and the second segment 212 may be located in the first sub-cavity 113a of the positive power line 111. The refrigerant passes through the negative power line 112 first and then through the positive power line 111 to carry away the heat on the negative power line 112 and the positive power line 111.

[0129] Please see Figure 18 , Figure 18 This is a cross-sectional view of the charging gun 100 provided in the third embodiment of this application. In one embodiment, the positive power line 111 has a first sub-cavity 113a, and the negative power line 112 is a solid cable. The first section 211 of the first conduit 210 is located in the first sub-cavity 113a of the positive power line 111. When the refrigerant flows through the first section 211, it can cool the positive power line 111. The second section 212 contacts the negative power line 112 to cool the negative power line 112. At this time, a thermally conductive material 140 can be filled in the charging gun housing 120 so that the second section 212 and the negative power line 112 can fully contact each other through the thermally conductive material 140, thereby improving the cooling effect on the negative power line 112.

[0130] In other embodiments, the second segment 212 may be placed inside the first sub-cavity 113a of the positive power line 111, and the refrigerant flowing through the second segment 212 may cool the positive power line 111; the first segment 211 may contact the negative power line 112 to cool the negative power line 112.

[0131] In other embodiments, the positive power line 111 may be a solid cable, the negative power line 112 may be provided with a second sub-cavity 113b, the first section 211 of the first conduit 210 may contact the positive power line 111 to cool the positive power line 111, and the second section 212 may be located in the second sub-cavity 113b of the negative power line 112, and the refrigerant may cool the negative power line 112 when it flows through the second section 212.

[0132] Please see Figure 19 and Figure 20 , Figure 19 This is a cross-sectional view of the charging gun 100 provided in the third embodiment of this application. Figure 20 This is a schematic diagram of the first conduit 210 provided in the third embodiment of this application. In one possible implementation, the power line 110 includes a positive power line 111 and a negative power line 112. The positive power line 111 has a first sub-cavity 113a, and the negative power line 112 has a second sub-cavity 113b. The first conduit 210 includes a first segment 211, a second segment 212, and a third segment 215. One end of the first segment 211 and the third segment 215 are both connected to the first conduit interface 320, and the other end of the first segment 211 and the third segment 215 are both connected to one end of the second segment 212. The other end of the second segment 212 is connected to the second conduit interface 330. The first segment 211 is located in the first sub-cavity 113a, and the third segment 215 is located in the second sub-cavity 113b. The refrigerant flowing out from the first conduit interface 320 can flow into the first segment 211 and the third segment 215 respectively (e.g., Figure 19 and Figure 20 As shown), the first segment 211 and the third segment 215 form two branches to cool the positive power line 111 and the negative power line 112 respectively. The refrigerant, having absorbed heat from the positive power line 111 and the negative power line 112, flows into the second segment 212 and out to the second pipe interface 330. By setting the first segment 211 and the third segment 215, these two pipe segments directly receive the refrigerant flowing out of the first pipe interface 320, which can achieve a better heat dissipation effect on the positive power line 111 and the negative power line 112 compared to... Figure 17 The refrigerant is shown to pass through the positive power line 111 and the negative power line 112 in sequence for heat dissipation. In this embodiment, the refrigerant passes through the positive power line 111 and the negative power line 112 simultaneously, resulting in a shorter heat dissipation path and improving the cooling rate of the refrigerant on the positive power line 111 and the negative power line 112.

[0133] In one embodiment, the first pipeline interface 320 can be connected to the first section 211 and the third section 215 via a three-way valve to achieve a split-circuit operation.

[0134] In one embodiment, the charging terminal 10 further includes a three-way connector, with one end of the first segment 211, the second segment 212 and the third segment 215 respectively connected to the three connection ports of the three-way connector.

[0135] Please see Figure 21 , Figure 21 This is a cross-sectional view of the charging gun 100 provided in the fourth embodiment of this application. The fourth embodiment of this application provides a charging terminal 10. The difference from the first embodiment is that in the fourth embodiment, the first pipeline 210 includes a first segment 211 and a second segment 212 connected to each other. One end of the first segment 211 is connected to the first pipeline interface 320, and the other end of the first segment 211 is connected to one end of the second segment 212. The other end of the second segment 212 is connected to the second pipeline interface 330. The first segment 211 is a flexible tube, and the second segment 212 is formed by the inner wall of the gun wire housing 120, the outer wall of the power line 110, and the outer wall of the first segment 211. The refrigerant flows sequentially through the first section 211 and the second section 212 to dissipate heat from the power line 110. In this embodiment, the remaining space inside the charging gun 100 is fully utilized to enclose the second section 212, which forms the first pipeline 210. On the one hand, one section of flexible tubing is required, reducing the size of the charging gun 100 and saving costs. On the other hand, the refrigerant in the second section 212 directly contacts the power line 110 without needing to indirectly contact it through the pipe wall. This direct contact allows the refrigerant to cool the power line 110 more quickly. Furthermore, the second section 212, formed by the inner wall of the charging gun housing 120 and the outer wall of the power line 110, provides a larger contact area between the refrigerant and the power line 110, which is more conducive to heat dissipation from the power line 110.

[0136] In one embodiment, the second segment 212 may also be configured as a flexible hose, and the first segment 211 is formed by the inner wall of the gun wire housing 120 and the outer wall of the power line 110. The refrigerant flows sequentially through the first segment 211 and the second segment 212 to dissipate heat from the power line 110.

[0137] like Figure 22 As shown, in one embodiment, by filling the gun wire housing 120 with a thermally conductive material 140, the gun wire housing 120 is divided into two mutually isolated spaces, one of which is a first segment 211 and the other is a second segment 212. The refrigerant flows into one end of one space from the first pipe interface 320 and flows from the other end of one space to one end of the other space, and flows out from the other end of the other space to the second pipe interface 330.

[0138] In one possible implementation, the charging gun 100 includes a charging cable housing 120 and a heat-conducting material 140. The power line 110, the first conduit 210, and the heat-conducting material 140 are located inside the charging cable housing 120. The first conduit 210 includes a first segment 211 and a second segment 212 connected to each other. One end of the first segment 211 is connected to a first conduit interface 320, and the other end of the first segment 211 is connected to one end of the second segment 212. The other end of the second segment 212 is connected to a second conduit interface 330. The first segment 211 is a flexible tube. The heat-conducting material 140 is in contact with both the power line 110 and the first segment 211. The second segment 212 is formed by the inner wall of the charging cable housing 120, the outer wall of the power line 110, and the heat-conducting material 140.

[0139] Please see Figure 23 In one possible implementation, the power line 111 includes a positive power line 111 and a negative power line 112. Both the positive power line 111 and the negative power line 112 are provided with cavities 113. The first conduit 210 includes a first segment 211, a second segment 212 and a third segment 215. One end of the first segment 211 and the third segment 215 are connected to the first conduit interface 320. The other end of the first segment 211 and the third segment 215 are connected to one end of the second segment 212. The other end of the second segment 212 is connected to the second conduit interface 330. The first segment 211 and the third segment 215 are located in the cavities 113 of the positive power line 111 and the negative power line 112, respectively. The second segment 212 is formed by the inner wall of the gun wire housing 120, the outer wall of the positive power line 111 and the outer wall of the negative power line 112.

[0140] Please see Figure 1 This application provides a charging system 1, which includes a charging host 20 and a charging terminal 10 as described above. The power line is capable of receiving DC power output from the charging host 20 for charging the energy storage device 30.

[0141] The charging terminal and charging system provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and embodiments of this application. The description of the embodiments above is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in specific embodiments and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A charging terminal, characterized by, The charging terminal comprises a charging gun, a first pipeline, a pipeline box, a condenser and a compressor, the charging gun is internally provided with a power line and the first pipeline, the power line is used for transmitting direct current to charge an energy storage device, at least part of the first pipeline is used for being arranged in parallel with the power line, the inlet and outlet of the first pipeline are located at the same end of the charging gun, and wherein: The pipeline box is internally provided with a cable connection interface, a first pipeline interface and a second pipeline interface, the cable connection interface is used for electrically connecting one end of the power line and electrically connecting a charging host located outside the pipeline box, and the cable connection interface is used for transmitting direct current output by the charging host to the power line; The first pipeline interface is used for connecting the condenser located outside the pipeline box and the inlet of the first pipeline, and the second pipeline interface is used for connecting the compressor located outside the pipeline box and the outlet of the first pipeline, so that refrigerant can flow between the compressor, the condenser and the first pipeline to cool the power line.

2. The charging terminal according to claim 1, characterized in that, The charging gun further comprises a gun line and a connecting seat located at one end of the gun line adjacent to the pipeline box, the connecting seat is provided with a power terminal, a first pipeline joint and a second pipeline joint, one end of the power line is electrically connected with the power terminal, the inlet of the first pipeline is communicated with the first pipeline joint, and the outlet of the first pipeline is communicated with the second pipeline joint; When the connecting seat is plugged on the pipeline box, the power terminal is electrically connected with the cable connection interface, the first pipeline joint is communicated with the first pipeline interface, and the second pipeline joint is communicated with the second pipeline interface.

3. The charging terminal according to claim 1, characterized in that, The connecting seat and the pipeline box are detachably connected.

4. The charging terminal according to any one of claims 1 to 3, characterized in that, The charging terminal comprises a box body, the compressor, the condenser and the pipeline box are located in the box body, the box body is provided with an opening, the pipeline box is located inside the opening, one end of the power line passes through the opening to be electrically connected with the cable connection interface, the inlet of the first pipeline passes through the opening to be communicated with the first pipeline interface, and the outlet of the first pipeline passes through the opening to be communicated with the second pipeline interface.

5. The charging terminal according to any one of claims 1 to 4, characterized in that, The charging gun comprises a gun head and a gun line connected with each other, the gun head is located at one end of the gun line away from the pipeline box, the inlet and outlet of the first pipeline are both located at one end of the gun line away from the gun head, and the length of the first pipeline is greater than or equal to the length of the gun line.

6. The charging terminal according to any one of claims 1 to 5, characterized in that, The first pipeline comprises a first section, a bending section and a second section connected in sequence, one end of the first section away from the bending section is communicated with the first pipeline interface, and one end of the second section away from the bending section is communicated with the second pipeline interface; The charging terminal further comprises a support, and the support is located at the bending section to support the bending section.

7. The charging terminal according to any one of claims 1 to 5, characterized by, The first pipeline comprises a first section and a second section, and the charging terminal further comprises a U-shaped joint located between and communicating the first section and the second section, one end of the first section away from the U-shaped joint being in communication with the first pipeline interface, and one end of the second section away from the U-shaped joint being in communication with the second pipeline interface.

8. The charging terminal according to any one of claims 1 to 5, characterized by, The power line is provided with a cavity, and the first pipeline is located in the cavity.

9. The charging terminal according to any one of claims 1 to 5, characterized by, The power line comprises a positive power line and a negative power line, the positive power line is provided with a first sub-cavity, the negative power line is provided with a second sub-cavity, the first pipeline comprises a first section, a second section and a third section, one end of the first section and one end of the third section are in communication with the first pipeline interface, the other end of the first section and the other end of the third section are in communication with one end of the second section, the other end of the second section is in communication with the second pipeline interface, the first section is located in the first sub-cavity, and the third section is located in the second sub-cavity.

10. The charging terminal according to any one of claims 1 to 9, characterized in that, The charging gun comprises a gun line shell and a heat-conducting material, the power line, the first pipeline and the heat-conducting material are located in the gun line shell, and the heat-conducting material is filled between the inner wall of the gun line shell and the outer wall of the power line, between the inner wall of the gun line shell and the outer wall of the first pipeline, and between the outer wall of the power line and the outer wall of the first pipeline.

11. The charging terminal according to claim 4, characterized by The box is provided with an air inlet, and the charging terminal further comprises a fan located between the condenser and the air inlet.

12. The charging terminal according to claim 11, characterized in that, The box comprises a first side plate and a second side plate oppositely arranged along a first direction, the air inlet is located on the first side plate, the second side plate is provided with an air outlet, and the pipeline box is fixed to the inner side of the second side plate.

13. The charging terminal according to claim 12, characterized in that, In the first direction, the compressor is located between the condenser and the pipeline box.

14. The charging terminal according to any one of claims 1 to 13, characterized by, The charging terminal further comprises an expansion valve located between and communicating the condenser and the first pipeline interface.

15. A charging system, characterized by The charging system comprises a charging host and the charging terminal according to any one of claims 1-14, and the power line can receive direct current output by the charging host for charging the energy storage device.

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