Charging gun and charging pile

Abstract

The application provides a charging gun and a charging pile, and relates to the technical field of automobile charging. The charging gun comprises a cable and a gun head. One end of the cable is connected to the gun head, and the other end is used for electrically connecting a power module of the charging pile. The gun head comprises a gun shell, two power terminals and two cooling pools. One end of each power terminal is fixed in the gun shell and connected to one of the two power lines of the cable. The other end of each power terminal is exposed from the gun shell and used for plugging with a socket of a vehicle. The two cooling pools are arranged in the gun shell, one of which is in contact with one power terminal, and the other is in contact with the other power terminal. The two cooling pools are arranged at intervals. Each cooling pool is used for receiving cooling liquid to dissipate heat for the corresponding power terminal. The charging gun can improve the heat dissipation efficiency of the power terminal and reduce the risk of short circuit of the power terminal.

Description

Technical Field

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

[0002] The electric vehicle charging gun is a key component connecting the charging equipment and the electric vehicle. To shorten charging time, the market demand for larger charging currents is increasing, leading to a sharp increase in heat generation at the power terminals of the charging gun. To address this challenge, the industry has begun to focus on thermal management technology for the power terminals of the charging gun, with liquid cooling solutions becoming the mainstream approach due to their high-efficiency heat dissipation potential.

[0003] Currently, there are two main technologies for heat dissipation of the charging gun head: immersion cooling and isolated cooling. While immersion cooling offers high heat dissipation efficiency, it involves complex cable assembly and is prone to causing localized high temperatures when the cable is bent. In contrast, the more reliable isolated cooling solution is preferred. However, existing isolated cooling solutions typically fix the cooling pool between the two power terminals. The thick insulating sheet installed between the cooling pool and the power terminals to meet safety regulations reduces heat dissipation efficiency, and leakage of coolant in the cooling pool can cause short circuits in the power terminals. Utility Model Content

[0004] This application provides a charging gun and a charging station. The charging gun and charging station improve the heat dissipation efficiency of the power terminals while also reducing the risk of short circuits in the power terminals.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] On one hand, this application provides a charging gun, which includes a cable and a charging head. One end of the cable is connected to the charging head, and the other end of the cable is used to electrically connect to the power module of a charging pile. The charging head includes a gun housing, two power terminals, and two cooling pools, wherein: one end of each power terminal is fixed inside the gun housing and connected to one of the two power lines of the cable, and the other end of each power terminal protrudes from the gun housing and is used to plug into a vehicle socket. Both cooling pools are disposed inside the gun housing, with one cooling pool contacting one power terminal and the other cooling pool contacting the other power terminal, and the two cooling pools are spaced apart. Each cooling pool is used to receive coolant to dissipate heat from the corresponding power terminal.

[0007] In the charging gun disclosed in this application, one end of each power terminal is fixed inside the gun housing and electrically connected to the power module of the charging pile via a power wire, while the other end of each power terminal protrudes from the gun housing and is used to connect to the vehicle's socket. Thus, the power terminal can supply the vehicle with electrical energy transmitted from the power module for charging. Since each power terminal in this application is in contact with a cooling pool, and the cooling pool receives coolant to dissipate heat from the corresponding power terminal, during charging, any large amount of Joule heat generated by the power terminal can be transferred to the cooling pool in contact with the power terminal and carried away by the cooling pool, thereby cooling the power terminal.

[0008] The charging gun of this application has a cooling pool for each power terminal, and the cooling pools for one power terminal and the cooling pools for the other power terminal are spaced apart. On the one hand, the cooling pools for the two power terminals are spaced apart, and the two power terminals cannot be physically connected through the cooling pools. Compared with some technologies that place the cooling pool between the two power terminals, this application can reduce the risk of short circuit between the two power terminals when the coolant in the cooling pool leaks. On the other hand, the heat of each power terminal can be directly transferred to the corresponding cooling pool. Compared with some technologies that place the cooling pool between the two power terminals (which requires a thick insulating sheet between the cooling pool and each power terminal to meet the creepage distance requirements of safety regulations to avoid short circuit between the two power terminals), this application does not require additional insulating sheets. The heat of the power terminal can be directly transferred to the corresponding cooling pool and carried away by the cooling pool, which can improve the problems of low heat transfer efficiency and poor cooling effect of traditional isolated liquid cooling solutions. In addition, the two power terminals can be regarded as two independent heat sources. This application configures an independent cooling pool for each heat source. Compared with some technologies that share a cooling pool for two power terminals, this avoids the problem of cooling efficiency reduction of one power terminal caused by the temperature rise of the coolant in the series mode. It can eliminate the mutual influence between the two heat sources, prevent system-level heat accumulation, and avoid local or overall heat accumulation caused by the distribution and weakening of cooling capacity.

[0009] In one implementation, a cooling pool is attached to the side of one power terminal facing away from the other power terminal.

[0010] This application attaches a cooling pool to the side of one power terminal away from the other power terminal. In this way, the two cooling pools are far apart. If a coolant leakage occurs in the cooling pool, it is difficult to connect the two power terminals through the coolant because the two cooling pools are far apart. Therefore, the risk of short circuit between the two power terminals can be reduced.

[0011] In one implementation, each cooling pool includes a housing that contacts the outer wall of the power terminal. The housing is made of a thermally conductive and insulating material. The cooling pool includes an inlet and an outlet, both located at the end of the housing near the cable.

[0012] The outer shell of the cooling tank in this application is made of thermally conductive and insulating material, which enables an insulated connection between the cooling tank and the power terminals. This prevents the power terminals from electrically conducting to other components or parts through the cooling tank, achieving high-voltage isolation, reducing the risk of short circuits, and thus improving charging stability and equipment reliability. By placing both the inlet and outlet of the cooling tank at the end of the outer shell closest to the cable, liquid can enter and exit from one end of the cooling tank. The inlet pipe connected to the inlet and the return pipe connected to the outlet can both be connected to the end of the cooling tank closest to the cable, facilitating the placement of the inlet and return pipes within the outer protective sleeve of the cable, and enabling a compact charging gun design.

[0013] In one implementation, the outer wall of the housing has a recessed groove facing the power terminal; the groove has an opening near the edge of the housing; the charging gun also includes a screw connector, the head of which is received in the groove and contacts the bottom wall of the groove, and the shank of the screw connector passes through the housing and is fixed to the power terminal.

[0014] This application uses screw connectors to fix the cooling pool and power terminals, which is simple, reliable, and easy to disassemble and install. Furthermore, the groove on the outer wall of the housing saves material for the cooling pool, reducing material costs. Receiving the head of the screw connector within the groove allows for concealed installation and reduces the size of the charging gun along the arrangement direction of the power terminals and cooling pool. The groove in this application has an opening near the edge of the housing. This allows the groove to be positioned close to the edge of the housing, utilizing the corner space. Compared to centering the groove relative to the housing, this layout reduces the space occupied by the groove in the cooling pool and improves the flexibility of the liquid channel layout within the cooling pool.

[0015] In one implementation, a liquid channel is provided inside the housing, which connects the liquid inlet and the liquid outlet; wherein, along the direction from the cooling pool to the power terminal, the projection of the liquid channel on the power terminal does not overlap with the projection of the screw connector on the power terminal.

[0016] With the above-mentioned configuration, the screw connector and the liquid channel have no overlapping part in the direction from the cooling pool to the power terminal. When the cooling pool and the power terminal are fixed by the screw connector, the screw connector will not pass through the liquid channel. The screw connector and the cooling pool do not need to adopt a sealing design, which reduces the connection difficulty between the cooling pool and the power terminal.

[0017] In one implementation, the groove includes three recesses. One recess is located at the end of the housing near the cable and positioned between the inlet and outlet. The other two recesses are located at the end of the housing away from the cable. The recess at the end of the housing near the cable has one opening on the side of the housing facing the cable. The recess at the end of the housing away from the cable has two openings, one on the side of the housing facing away from the cable and the other on the side of the housing facing the inner wall of the gun housing.

[0018] This application incorporates three recesses, each fitted with a screw-in connector for securing the cooling tank and power terminals. These three connectors form a stable triangular structure, ensuring reliable fixation of the cooling tank and power terminals. Furthermore, one of the three recesses is located at the end of the casing closest to the cable, between the inlet and outlet, utilizing the space between them. The other two recesses are located at the end of the casing furthest from the cable and have two openings, indicating that these two recesses are positioned at the two corners of this end, effectively utilizing the space at those corners. This arrangement of the three recesses effectively utilizes the space within the casing, achieving a rational structural layout.

[0019] In one implementation, each power terminal includes a first part, a second part, and a third part; wherein the third part is located inside the gun housing and connects the first part and the second part. The first part is located inside the gun housing, with one end of the first part facing away from the third part protruding from the gun housing; the second part is located inside the gun housing, with one end of the second part facing away from the third part connected to a power line. The side of the third part facing away from the first part and the side of the second part facing the cooling pool together form an opening groove; the cooling pool is fixed inside the opening groove, and two adjacent outer walls of the cooling pool are in contact with the third part and the second part, respectively.

[0020] This application places the cooling pool within the open slot of the power terminal. This arrangement effectively utilizes the spatial structure of the power terminal, achieving a compact structure for both the power terminal and the cooling pool. Furthermore, this application ensures that two adjacent outer walls of the cooling pool contact the third and second portions respectively, increasing the contact area between the cooling pool and the power terminal and improving heat dissipation efficiency.

[0021] In one implementation, a protrusion is provided inside the gun housing, and the protrusion extends from the inner wall of the gun housing toward the side of the cooling pool opposite to the power terminal and abuts against the cooling pool.

[0022] This application adopts this fixing method, which eliminates the need for special fixing components for fixing the cooling pool and power terminals, thereby reducing the number of parts and simplifying the assembly of the charging gun.

[0023] In one implementation, the charging gun further includes a sealant that fills the gaps between the inner wall of the gun housing and the end of the power terminal used for connection with the power line, the gap between the inner wall of the gun housing and the cooling pool, the gap between the inner wall of the gun housing and the power line, and the gap between the ends of the two power terminals used for connection with the power line.

[0024] This application utilizes a sealant-filling method within the charging gun housing to fill the gaps between the inner wall of the housing and various components. Specifically, the portion of the sealant located on the side of the cooling pool facing away from the power terminals and the portion of the power terminals facing away from the cooling pool cooperate to press the cooling pool and power terminals firmly from both sides, ensuring reliable contact between them. During long-term use of the charging gun, the sealant inside the housing continuously presses the cooling pool and power terminals together, maintaining reliable contact over a long period. Furthermore, the sealant improves the insulation reliability between the two power terminals, preventing short circuits caused by coolant leakage and condensation. It also increases the heat dissipation area of ​​the power terminals, improving their heat transfer efficiency and enhancing the overall heat dissipation of the charging gun.

[0025] In one implementation, the gun head further includes an insulating connector, which is fixed inside the gun housing, and both ends of the insulating connector extend toward two opposite inner sidewalls of the gun housing; two power terminals are located on both sides of the insulating connector.

[0026] This application incorporates an insulating connector, with two power terminals positioned on opposite sides of the connector. The two power terminals are separated by the connector, with a portion of one power terminal and a cooling pool located on one side of the connector, while a portion of the other power terminal and another cooling pool are located on the other side. This achieves positive and negative polarity isolation between the two power terminals, reducing the risk of short circuits. Furthermore, the insulating connector isolates the two cooling pools, minimizing the risk of coolant leakage connecting the two power terminals.

[0027] On the other hand, this application provides a charging pile, which includes a pile body, a power module and a charging gun in any of the above implementations, wherein the power module is fixed in the pile body and the charging gun's cable is electrically connected to the power module.

[0028] Since the charging pile provided in this application includes the charging gun in any of the above implementation methods, the charging pile can at least improve the heat dissipation efficiency of the power terminals while reducing the risk of short circuits in the power terminals. Attached Figure Description

[0029] Figure 1This is a schematic diagram of an application scenario for a charging pile provided in an embodiment of this application;

[0030] Figure 2 This is a schematic diagram illustrating another application scenario of a charging pile provided in an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the structure of a charging pile provided in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the structure of the charging gun provided in an embodiment of this application;

[0033] Figure 5 for Figure 4 A schematic diagram of the head of the charging gun;

[0034] Figure 6 for Figure 5 Axonometric sectional view of the gun head;

[0035] Figure 7 for Figure 5 A bottom view of the bullet head;

[0036] Figure 8A for Figure 7 One of the structural diagrams of the gun head;

[0037] Figure 8B for Figure 8A A magnified view of the area at point A after the screw connector has been removed;

[0038] Figure 9 for Figure 8A Exploded view of the middle structure;

[0039] Figure 10 for Figure 9 A schematic diagram of the power terminals in the diagram;

[0040] Figure 11 for Figure 8A Axonometric sectional view of the middle structure;

[0041] Figure 12 for Figure 7 The second schematic diagram of the structure of the gun head.

[0042] Figure label:

[0043] 100 - Charging pile; 101 - Charging host; 102 - Charging terminal; 200 - Vehicle; 300 - Power grid;

[0044] 10 - Charging gun;

[0045] 11-Cable; 111-Power cable; 1111-Sub-wire;

[0046] 12-Spearhead;

[0047] 121-Gun casing; 1211-First receiving cavity; 12111-Sub-cavity; 1212-Second receiving cavity;

[0048] 122 - Power terminal; 1221 - First part; 1222 - Second part; 1223 - Third part; 1224 - Opening slot;

[0049] 123-Cooling pool; 1231-Outer shell; 12311-Groove; 12311a-Opening; 1232-Liquid passage; 1233-Liquid inlet; 1234-Liquid outlet;

[0050] 124 - Liquid inlet connector; 125 - Liquid outlet connector;

[0051] 13-Screwed connector; 14-Protrusion;

[0052] 15 - Insulating connectors;

[0053] 16-Gun body;

[0054] 20 - Pile body; 30 - Power module. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0056] The terms "first," "second," and similar terms used in this article do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "one" or similar terms do not indicate a quantity limitation, but rather indicate the existence of at least one.

[0057] In the embodiments of this application, the terms "example" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "example" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "example" or "for example" is intended to present the relevant concepts in a specific manner. In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0058] Figure 1 This is a schematic diagram illustrating an application scenario of a charging pile 100 provided in an embodiment of this application. Figure 2For another application scenario diagram of the charging pile 100 provided in this application embodiment, please refer to... Figure 1 and Figure 2 This application provides a charging pile 100, which can be used to charge a device. The device to be charged is, for example, a vehicle 200, but it can also be any other device requiring charging. The charging pile 100 receives AC power from the power grid 300 and converts it into stable DC or AC power before supplying it to the vehicle 200 to charge it. Alternatively, the vehicle 200 can output electrical energy back to the power grid 300 via the charging pile 100.

[0059] Figure 3 This is a schematic diagram of the structure of a charging pile provided in an embodiment of this application. For example, it is shown in conjunction with reference to... Figure 1 and Figure 3 As shown, the charging pile 100 can be a split-type charging pile 100; or, in conjunction with the reference... Figure 2 and Figure 3 As shown, the charging pile 100 can also be an integrated charging pile 100.

[0060] In some embodiments, reference is made to Figure 1 and Figure 3 As shown, the charging pile 100 is a split-type charging device. Specifically, the charging pile 100 includes a charging host 101, at least one charging terminal 102, and at least one charging gun A. The charging host 101 is connected to each charging terminal 102, and at least one charging terminal 102 is connected to at least one charging gun A. The nozzle A1 of each charging gun A is connected to the corresponding charging terminal 102 via a cable A2, and the nozzle A1 of each charging gun A is used to connect to a vehicle 200. In a specific implementation, for example, one charging terminal 102 connects to one or more charging guns A, and one or more charging guns A connect to one vehicle 200.

[0061] The charging host 101 includes multiple power modules 30, which convert the AC power output from the power grid 300 into stable DC or AC power before supplying it to the charging terminal 102. These power modules 30 may include, for example, an AC / DC converter and a DC / DC converter. The charging terminal 102 supplies this stable DC or AC power to the vehicle 200 via a connected charging gun A. The charging terminal 102 includes a charging pile 20, a human-machine interface, a charging control unit, and a metering and billing unit, and is used for information interaction, energy transfer, and metering and billing with the vehicle 200.

[0062] In other embodiments, in conjunction with reference to Figure 2 and Figure 3 The charging pile 100 is an integrated charging device. For example, the human-machine interface, charging control unit, and metering and billing unit of the charging pile 100 are directly installed in the charging host 101. That is, the charging pile 100 includes the charging host 101 and at least one charging gun A, wherein the head A1 of the charging gun A is connected to the charging host 101 via cable A2. In other words, the charging pile 100 does not include a charging terminal. In a specific implementation, multiple power modules 30 in the charging host 101 convert the AC power output from the power grid 300 into stable DC or AC power, which is then transmitted to the vehicle 200 through the charging gun A.

[0063] To shorten vehicle charging time by 200 km, high-current, high-power charging technology has become the mainstream development direction in the industry. However, the increase in charging power causes the power terminals of the charging gun A to generate a large amount of Joule heat during operation, which can lead to excessive temperature rise of the power terminals. Therefore, the thermal management technology of the power terminals of the charging gun A is crucial, and liquid cooling has become the mainstream direction of thermal management technology for the power terminals of the charging gun A due to its high heat dissipation potential. Liquid-cooled charging gun A includes two technical solutions: immersion and isolation. The immersion design directly immerses the power terminals in insulating coolant, which has the advantage of high heat exchange efficiency. However, the assembly of cable A2 is complex, and during frequent bending of cable A2 by the user, the internal liquid cooling circuit is easily deformed by compression, resulting in uneven flow distribution or even local flow channel blockage, which can easily lead to cooling dead zones and local overheating. In contrast, the more reliable isolation solution is preferred. However, in some embodiments, the isolation solution fixes the cooling pool between the two power terminals, resulting in poor heat dissipation efficiency, and if the coolant in the cooling pool leaks, it can easily cause short circuits in the power terminals.

[0064] Based on this, this application provides a charging gun 10, which can improve the heat dissipation efficiency of the power terminal 122 while reducing the risk of short circuit in the power terminal 122 in the isolated cooling scheme. The charging gun 10 can be applied to the charging pile 100 mentioned above. When the charging gun 10 is applied to the charging pile 100, one end of the cable 11 of the charging gun 10 is connected to the pile body 20 and electrically connected to the power module 30 inside the pile body 20. The other end of the cable 11 is connected to the gun head 12 of the charging gun 10 and is used to plug into the device to be charged, such as a vehicle, thereby charging the device to be charged.

[0065] The following section will provide a detailed description and explanation of the specific structure of the charging gun 10 provided in this application.

[0066] Figure 4 This is a schematic diagram of the structure of the charging gun 10 provided in the embodiments of this application, with reference to... Figure 4As shown, the charging gun 10 includes a cable 11 and a gun head 12. One end of the cable 11 is connected to the gun head 12, and the other end of the cable 11 is used for electrical connection. Figure 3 The power module 30 of the charging pile 100 is used to connect to the vehicle's socket to transmit electrical energy from the power module to the cable 11 to supply power to the vehicle.

[0067] Figure 5 for Figure 4 A schematic diagram of the structure of the gun head 12 of the charging gun 10, in conjunction with reference. Figure 4 and Figure 5 As shown, the charging head 12 includes a housing 121 and two power terminals 122. The two power terminals 122 are located inside the housing 121, with one end of each power terminal 122 protruding from the housing 121 and used for connection to a vehicle's charging socket. The other end of each power terminal 122 is connected to a power line 111 in a cable 11. The power line 111 in the cable 11 and the power terminals 122 are used to realize the charging pile (…). Figure 4 and Figure 5 (Not shown in the text) and the current transmission between the vehicle.

[0068] For example, the charging gun 10 in this application includes a plurality of charging terminals, one end of each charging terminal in the charging gun 10 protruding from the gun housing 121 for connection to a socket in a vehicle, and the other end of each charging terminal being connected to a corresponding core wire in a cable 11.

[0069] The power terminal 122 is one of the multiple charging terminals of the charging gun 10. One of the two power terminals 122 proposed in this application is a positive power terminal 122, and the other is a negative power terminal 122. In addition to the power terminal 122, the charging terminal of this application also includes a communication terminal. Correspondingly, the cable 11 includes a power line 111 for current transmission and a communication line for signal transmission. The communication line and communication terminal in the cable 11 are used to realize communication between the vehicle and the charging pile.

[0070] For example, the charging terminals also include a charging connection confirmation terminal, a grounding terminal, and an auxiliary power terminal. The charging connection confirmation terminal is connected to a charging connection confirmation circuit. When the charging gun 10 is connected to the vehicle, the charging pile determines the connection status between the charging gun 10 and the vehicle by detecting the voltage at the detection point in the charging connection confirmation circuit. The grounding terminal is used for grounding connection. The auxiliary power terminal is a low-voltage charging terminal used to supply power to the vehicle's low-voltage equipment; for example, the auxiliary power terminal is used to provide auxiliary power to the vehicle-side battery control system. Among the various charging terminals of the charging gun 10, the power terminal 122 is a high-voltage terminal, while the communication terminal, the charging connection confirmation terminal, and the auxiliary power terminal are low-voltage terminals.

[0071] In this application, "the charging terminal is exposed from inside the gun housing 121" means that the charging terminal is exposed from inside the gun housing 121, that is, the charging terminal is not completely blocked by the gun housing 121 and can be seen from outside the gun housing 121.

[0072] Figure 6 for Figure 5 Axonometric sectional view of the gun head 12, in conjunction with reference Figure 5 and Figure 6 As shown, one end of each power terminal 122 is fixed inside the gun housing 121 and connected to one of the two power lines 111 of the cable 11, and the other end of each power terminal 122 protrudes from inside the gun housing 121.

[0073] The portion of the power terminal 122 exposed from the gun housing 121 is used for electrical connection with the vehicle, for example, the power terminal 122 is plugged into the socket of an electric vehicle.

[0074] Combined with reference Figure 5 and Figure 6 As shown, for example, the gun casing 121 has a first receiving cavity 1211 and a second receiving cavity 1212 communicating with the first receiving cavity 1211. A portion of each power terminal 122 extends into the first receiving cavity 1211 and another portion extends into the second receiving cavity 1212. The portion of each power terminal 122 located in the first receiving cavity 1211 is connected to one of the two power lines 111 of the cable 11, and the portion of each power terminal 122 located in the second receiving cavity 1212 protrudes from the second receiving cavity 1212.

[0075] For example, the second receiving cavity 1212 includes two, wherein a portion of one power terminal 122 extends into the first receiving cavity 1211 and another portion extends into one of the second receiving cavities 1212; and a portion of another power terminal 122 extends into the first receiving cavity 1211 and another portion extends into the other second receiving cavity 1212.

[0076] In addition to the first receiving cavity 1211 and the second receiving cavity 1212, the gun casing 121 also includes other receiving cavities, such as a receiving cavity for accommodating a communication terminal, a receiving cavity for accommodating a charging connection confirmation terminal, a receiving cavity for accommodating a grounding terminal, and a receiving cavity for accommodating an auxiliary power supply terminal. For example, the receiving cavities for accommodating the communication terminal, the receiving cavity for accommodating the charging connection confirmation terminal, the receiving cavity for accommodating the grounding terminal, and the receiving cavity for accommodating the auxiliary power supply terminal are independent of each other.

[0077] For example, the charging gun 10 of this application includes, in addition to the gun housing 121, such as Figure 4As shown, the charging gun 10 also includes a gun body 16, which is fixed to the side of the gun housing 121 facing the cable 11. A portion of the multiple core wires in the cable 11, including the power wire 111, passes through the gun body 16 and extends into the gun housing 121.

[0078] For example, the nozzle 12 of this application also includes two cooling pools 123, see reference. Figure 5 As shown, both cooling pools 123 are disposed inside the gun housing 121 (or the first receiving cavity 1211 when the gun housing 121 has a first receiving cavity 1211), and one cooling pool 123 is in contact with one power terminal 122, and the other cooling pool 123 is in contact with another power terminal 122. The two cooling pools 123 are arranged at intervals, and each cooling pool 123 is used to receive coolant to dissipate heat from the corresponding power terminal 122.

[0079] That is, each power terminal 122 is provided with a cooling pool 123 for receiving coolant and for dissipating heat for the corresponding power terminal 122, and the two cooling pools 123 are arranged at intervals.

[0080] In this application, the charging gun 10 is equipped with a cooling pool 123 that contacts each power terminal 122, and the cooling pool 123 that contacts one power terminal 122 and the cooling pool 123 that contacts the other power terminal 122 are spaced apart. That is, in this application, the cooling pool 123 that contacts the two power terminals 122 respectively is spaced apart. In this way, the two power terminals 122 cannot be physically connected through the cooling pool 123. Compared with some technologies that place the cooling pool between the two power terminals 122, this application can reduce the risk of short circuit between the two power terminals 122 when the coolant in the cooling pool 123 leaks.

[0081] In addition, each power terminal 122 is equipped with a cooling pool 123 in contact with it. The heat of each power terminal 122 can be directly transferred to the corresponding cooling pool 123. Compared with some technologies that place the cooling pool between two power terminals 122 (in order to avoid short circuit between the two power terminals 122, a thick insulating sheet needs to be set between the cooling pool and each power terminal 122 to meet the creepage distance requirements of safety regulations), this application does not require additional insulating sheets. The heat of the power terminal 122 can be directly transferred to the corresponding cooling pool 123 and carried away by the cooling pool 123, which can improve the problems of low heat transfer efficiency and poor cooling effect of traditional isolated liquid cooling solutions.

[0082] The two power terminals 122 can be regarded as two independent heat sources. This application configures an independent cooling pool 123 for each heat source. Compared with some technologies that share a cooling pool for two power terminals, this avoids the problem of cooling efficiency reduction of one power terminal caused by the temperature rise of the coolant in the series mode (the cooling efficiency of the power terminal near the coolant inlet is higher, and the cooling efficiency of the power terminal far from the coolant inlet decreases). It can eliminate the mutual influence between the two heat sources, prevent system-level heat accumulation, and avoid local or overall heat accumulation caused by the distribution and weakening of cooling capacity.

[0083] In this application, references are made to Figure 5 and Figure 6 As shown, each cooling pool 123 has an inlet 1233 and an outlet 1234. By providing a cooling pool 123 with an inlet 1233 and an outlet 1234, this application enables coolant to enter the cooling pool 123 from the inlet 1233 and exit from the outlet 1234. The coolant filling the cooling pool 123 can carry away the heat from the power terminal 122, thereby achieving heat dissipation and cooling of the power terminal 122.

[0084] In the charging gun 10 of this application, one end of each power terminal 122 is fixed inside the gun housing 121 and electrically connected to the power module of the charging pile via a power line, and the other end of each power terminal 122 protrudes from inside the gun housing 121. Thus, the power terminal 122 can supply the vehicle with electrical energy transmitted from the power module for charging the vehicle. Since each power terminal 122 of this application is in contact with a cooling pool 123, and the cooling pool 123 has an inlet 1233 and an outlet 1234, during the charging process, if a large amount of Joule heat is generated by the power terminal 122, the heat can be transferred to the cooling pool 123 in contact with the power terminal 122 and carried away by the cooling pool 123, thereby achieving cooling of the power terminal 122.

[0085] This application does not impose specific restrictions on the location of the two cooling pools 123. For example, the two cooling pools 123 may be located between the two power terminals 122; or the two power terminals 122 and the two cooling pools 123 may be arranged alternately.

[0086] For example, Figure 7 for Figure 5 A bottom view of the gun head 12, refer to Figure 7 As shown, a cooling pool 123 is attached to the side of a power terminal 122 opposite to the other power terminal 122.

[0087] That is, portions of both power terminals 122 are located between the two cooling pools 123.

[0088] This application attaches a cooling pool 123 to the side of a power terminal 122 away from the other power terminal 122. In this way, the two cooling pools 123 are far apart. If a coolant leakage problem occurs in the cooling pool 123, it is difficult to connect the two power terminals 122 through the coolant because the two cooling pools 123 are far apart. Therefore, the risk of short circuit between the two power terminals 122 can be reduced.

[0089] In one implementation, each cooling pool 123 includes a housing 1231, which contacts the outer wall of the power terminal 122. The housing 1231 is made of a thermally conductive and insulating material (e.g., ceramic, plastic with high thermal conductivity, etc.). The housing 1231 of the cooling pool 123 in this application uses a thermally conductive and insulating material. This material enables an insulated connection between the cooling pool 123 and the power terminal 122, preventing the power terminal 122 from electrically conducting to other components or devices through the cooling pool 123. This achieves high-voltage isolation, reduces the risk of short circuits, and thus improves charging stability and equipment reliability.

[0090] For example, such as Figure 6 As shown, both the liquid inlet 1233 and the liquid outlet 1234 are located on the outer casing 1231 near the cable 11. Figure 6 (Not shown in the diagram) One end. This application, by having both the liquid inlet 1233 and the liquid outlet 1234 located at the end of the housing 1231 near the cable 11, allows liquid to enter and exit from one end of the cooling pool 123. The water inlet pipe connected to the liquid inlet 1233 and the water return pipe connected to the liquid outlet 1234 can both be connected to the end of the cooling pool 123 near the cable 11, which facilitates the placement of the water inlet pipe and the water return pipe inside the outer protective sleeve of the cable 11, thus achieving a compact structure for the charging gun 10.

[0091] In some embodiments, the inlet 1233 and the outlet 1234 are both located on the same side of the housing 1231, for example, on the side of the housing 1231 facing the cable 11. When the inlet 1233 and the outlet 1234 are both located on the same side of the housing 1231, the distance between the inlet pipe communicating with the inlet 1233 and the return pipe communicating with the outlet 1234 can be reduced. This also helps to reduce the radial dimension of the outer protective sleeve when the inlet pipe and the return pipe are housed within the outer protective sleeve of the cable 11.

[0092] In other embodiments, the inlet 1233 and the outlet 1234 are located on different sides of the housing 1231. For example, the inlet 1233 is located on the side of the housing 1231 near the power terminal 122, and the outlet 1234 is located on the side of the housing 1231 away from the power terminal 122. Or, the inlet 1233 is located on the side of the housing 1231 away from the power terminal 122, and the outlet 1234 is located on the side of the housing 1231 near the power terminal 122. Or, one of the inlet 1233 and the outlet 1234 is located on the side of the housing 1231 facing the cable 11, and the other of the inlet 1233 and the outlet 1234 is located on the side of the housing 1231 near the power terminal 122 or on the side of the housing 1231 away from the power terminal 122. When the inlet 1233 and outlet 1234 are located on different sides of the outer casing 1231, the distance between the inlet 1233 and outlet 1234 may be greater than that between the inlet 1233 and outlet 1234 being located on the same side. This provides greater flexibility in the design of the internal flow channels of the cooling pool 123, and allows for the design of longer and more complex flow channels within the cooling pool 123, so that the area through which the coolant flows is larger, reducing "dead zones" (i.e. areas where the coolant flows slowly or almost does not flow), reducing heat accumulation, and improving the heat dissipation uniformity of the cooling pool 123.

[0093] The cable 11 includes an outer protective sleeve, a power line 111, a communication line, an auxiliary power supply line, and a grounding wire. The power line 111, communication line, auxiliary power supply line, and grounding wire are all housed within the outer protective sleeve. The gaps between the power line 111, communication line, auxiliary power supply line, grounding wire, and outer protective sleeve are filled with a filling material. For example, the water inlet pipe and water return pipe of this application are also housed within this outer protective sleeve.

[0094] For example, the water inlet pipe housed in the outer protective sheath of the cable 11 is in contact with the power line 111 located inside the outer protective sheath, so that the water inlet pipe can be used to cool the power line 111.

[0095] In addition, such as Figure 6 As shown, in order to facilitate the connection between the water inlet pipe and the liquid inlet 1233, the charging gun also includes a liquid inlet connector 124, which is connected to the liquid inlet 1233. The water inlet pipe is connected to the end of the liquid inlet connector 124 away from the cooling pool 123. Similarly, the charging gun also includes a liquid outlet connector 125, which is connected to the liquid outlet 1234. The return water pipe is connected to the end of the liquid outlet connector 125 away from the cooling pool 123.

[0096] Figure 8A for Figure 7 One of the structural diagrams of the middle gun head 12. Figure 9 for Figure 8A Exploded view of the middle structure Figure 10 for Figure 9 A schematic diagram of the power terminal 122 is shown. In one implementation, it is combined with... Figures 8A to 10 As shown, each power terminal 122 includes a first portion 1221, a second portion 1222, and a third portion 1223, with the third portion 1223 located on the gun housing 121. Figures 8A to 10 (Not shown) is located inside the gun housing 121 and connects the first part 1221 and the second part 1222. The first part 1221 is located inside the gun housing 121 and the end of the first part 1221 facing away from the third part 1223 protrudes from the gun housing 121. The second part 1222 is located inside the gun housing 121 and the end of the second part 1222 facing away from the third part 1223 is connected to the power line 111.

[0097] The structure of the first part 1221, the second part 1222, and the third part 1223 of the power terminal 122 is referenced. Figure 10 As shown, the third part 1223 connects the second part 1222 and the first part 1221.

[0098] The side of the third part 1223 facing away from the first part 1221 and the side of the second part 1222 facing the cooling pool 123 enclose each other to form an opening groove 1224. The cooling pool 123 is fixed in the opening groove 1224, and the two adjacent outer walls of the cooling pool 123 are in contact with the third part 1223 and the second part 1223 respectively.

[0099] This application places the cooling pool 123 within the opening slot 1224 of the power terminal 122. The arrangement of the cooling pool 123 effectively utilizes the spatial structure of the power terminal 122, achieving a compact structure for both the power terminal 122 and the cooling pool 123. Furthermore, this application ensures that the two adjacent outer walls of the cooling pool 123 contact the third portion 1223 and the second portion 1222, respectively, thereby increasing the contact area between the cooling pool 123 and the power terminal 122 and improving heat dissipation efficiency.

[0100] The connection between the cooling pool 123 and the power terminal 122 in this application can be achieved in various ways. For example, it can be fixed by using a screw connector 13; or, it can be fixed to one side of the power terminal 122 by using a structural design (e.g., a protruding structure); or, it can be fixed to one side of the power terminal 122 by providing sealant inside the gun housing 121 and pressing the side of the cooling pool 123 away from the power terminal 122 with the sealant. Examples of the fixing methods for the cooling pool 123 and the power terminal 122 will be provided below.

[0101] (1) The first fixing method between the cooling pool 123 and the power terminal 122: Figure 11 for Figure 8A Axonometric sectional view of the middle structure, combined with reference Figure 8A and Figure 11 As shown, the charging gun 10 also includes a screw connector 13, the head of which contacts the outer wall of the housing 1231, and the rod of which passes through the housing 1231 and is fixed to the power terminal 122.

[0102] That is, the cooling pool 123 and the power terminal 122 are fixed by a threaded connection using a screw connector 13. This application uses a screw connector 13 to fix the cooling pool 123 and the power terminal 122, which is a simple, reliable fixing method that is easy to disassemble and install.

[0103] When the power terminal 122 includes a second portion 1222, for example, the shank of the screw connector 13 passes through the housing 1231 and is fixed to the second portion 1222 of the power terminal 122.

[0104] Figure 8B for Figure 8A A magnified view of a section at point A after removing the screw connector, for example, in conjunction with... Figure 8A and Figure 8B As shown, the outer wall of the housing 1231 of the cooling pool 123 has a recess 12311 recessed towards the power terminal 122. The head of the screw connector 13 is received in the recess 12311 and contacts the bottom wall of the recess 12311. The shank of the screw connector 13 passes through the housing 1231 and is screwed into the power terminal 122. By providing a recess 12311 on the housing 1231 and recessing the head of the screw connector 13 into the recess 12311, this application can save material for the cooling pool 123 and reduce costs. Secondly, the recess 12311 can be used to hide the head of the screw connector 13, making the structure of the cooling pool 123 more regular, avoiding the occupation of the internal space of the first receiving cavity 1211 by the exposed head of the screw connector 13, and reducing the charging gun 10 ( Figure 8A (Not shown) Dimensions along the arrangement direction of power terminals 122 and cooling pool 123.

[0105] like Figure 8B As shown, the groove 12311 has an opening 12311a near the edge of the outer shell 1231. In this way, the groove 12311 can be set close to the edge of the outer shell 1231, which can utilize the corner space of the outer shell 1231. Compared with setting the groove 12311 in the center relative to the outer shell 1231, this layout can reduce the space occupied by the groove 12311 in the cooling pool 123 and improve the layout flexibility of the liquid channel 1232 inside the cooling pool 123.

[0106] In one implementation, the housing 1231 is provided with a liquid channel 1232, which connects the liquid inlet 1233 and the liquid outlet 1234; wherein, along the direction from the cooling pool 123 to the power terminal 122, the projection of the liquid channel 1232 on the power terminal 122 does not overlap with the projection of the screw connector 13 on the power terminal 122.

[0107] This application ensures that the screw connector 13 and the liquid channel 1232 have no overlapping portion in the direction from the cooling pool 123 to the power terminal 122. When the cooling pool 123 and the power terminal 122 are fixed by the screw connector 13, the position where the screw connector 13 passes through does not interfere with or overlap with the position where the liquid channel 1232 is located. There is no risk of coolant in the liquid channel 1232 leaking along the screw connector 13. There is no need to adopt a sealing design between the screw connector 13 and the cooling pool 123, which reduces the connection difficulty between the cooling pool 123 and the power terminal 122.

[0108] In some embodiments, the screw connectors 13 for fixing the cooling pool 123 and the power terminal 122 include multiple types, such as... Figure 11 As shown, there are three screw connectors 13, two of which are connected to the end of the cooling pool 123 away from the power line 111, and the other screw connector 13 is connected to the end of the cooling pool 123 close to the power line 111. The line connecting the three screw connectors 13 forms a triangle.

[0109] When the screw connector 13 includes three, the groove 12311 includes three, one of which is located at the end of the housing 1231 near the cable 11 and is located between the liquid inlet 1233 and the liquid outlet 1234, and the other two grooves 12311 are located at the end of the housing 1231 away from the cable 11.

[0110] Among them, combined Figure 8A and Figure 8B As shown, the groove 12311 located at one end of the housing 1231 near the cable 11 has an opening 12311a, and the opening 12311a is located on the side of the housing 1231 facing the cable 11 (the groove 12311 located at one end of the housing 1231 near the cable 11 is...). Figure 8A The lower groove 12311 among the three grooves 12311 has an opening 12311a in... Figure 8A (The orientation shown is downwards).

[0111] The groove 12311 located at the end of the housing 1231 away from the cable 11 has two openings 12311a, one of which is located on the side of the housing 1231 facing away from the cable 11, and the other opening 12311a is located on the side of the housing facing the inner wall of the gun housing 121 (the groove 12311 at the end of the housing 1231 away from the cable 11 is...). Figure 8A Of the three grooves 12311, the two upper grooves 12311 are located in... Figure 8A In the orientation shown, in one of the two grooves 12311, one of the two openings 12311a faces upward and the other opening faces outward; in the other groove 12311, one of the two openings 12311a faces upward and the other opening faces inward.

[0112] This application provides three grooves 12311, and provides screw connectors 13 for fixing the cooling pool 123 and the power terminal at each of the three grooves 12311. The three screw connectors 13 can form a triangular stable structure, thereby achieving reliable fixing of the cooling pool 123 and the power terminal.

[0113] Furthermore, one of the three grooves 12311 is located at the end of the outer casing 1231 near the cable 11 and between the inlet 1233 and the outlet 1234, thus utilizing the space between the inlet 1233 and the outlet 1234. The other two grooves 12311 are located at the end of the outer casing 1231 away from the cable 11 and have two openings 12311a. This indicates that these two grooves 12311 are located at the two corners of the end of the outer casing 1231 away from the cable 11, effectively utilizing the two corner positions of the end of the outer casing 1231 away from the cable 11. The above-described arrangement of the three grooves 12311 effectively utilizes the space of the outer casing 1231, achieving a rational structural layout.

[0114] Alternatively, in other embodiments, four screw connectors 13 are included, and the four screw connectors 13 are connected to the four corners of the cooling pool 123.

[0115] (2) The second fixing method between the cooling pool 123 and the power terminal 122: Figure 12 for Figure 7 Partial structural diagram of the middle gun head 12, in combination with Figure 7 and Figure 12 As shown, the gun housing 121 has a protrusion 14 inside, and the protrusion 14 extends from the inner side wall of the gun housing 121 toward the cooling pool 123 on the side away from the power terminal 122 and abuts against the cooling pool 123.

[0116] That is, by providing a protrusion 14 on the inner sidewall of the gun housing 121, the protrusion 14 abuts against the side of the cooling pool 123 facing away from the power terminal 122, thereby achieving close contact and fixation between the cooling pool 123 and the power terminal 122. This fixing method eliminates the need for special fasteners for fixing the cooling pool 123 and the power terminal 122, reducing the number of parts and simplifying the assembly of the charging gun 10.

[0117] For example, there are multiple protrusions 14, all of which are located on the side of each cooling pool 123 facing away from the power terminal 122. By providing multiple protrusions 14, local stress concentration can be avoided, reducing the risk of deformation of the cooling pool 123. Furthermore, the combined effect of multiple protrusions 14 can improve the fit between the contact surfaces of the cooling pool 123 and the power terminal 122. Additionally, providing multiple protrusions 14 can distribute the stress points, suppressing displacement caused by vibration or thermal expansion and contraction to a certain extent, maintaining a long-term reliable fastening effect between the cooling pool 123 and the power terminal 122. Moreover, if the height of one protrusion 14 is inconsistent due to processing errors, the other protrusions 14 can still compensate for the pressure, reducing assembly difficulty.

[0118] In addition, the protrusion 14 and the outer shell 1231 of the cooling pool 123 make planar contact, which can reduce the contact surface pressure and reduce the damage of the protrusion 14 to the cooling pool 123.

[0119] (3) The third fixing method between the cooling pool 123 and the power terminal 122: The charging gun 10 also includes sealant, which fills the gap between the inner wall of the gun shell 121 and the end of the power terminal 122 used to connect to the power line 111, the gap between the inner wall of the gun shell 121 and the cooling pool 123, the gap between the inner wall of the gun shell 121 and the power line 111, and the gap between the ends of the two power terminals 122 used to connect to the power line 111.

[0120] When the power terminal 122 includes a first part 1221, a second part 1222, and a third part 1223, and the second part 1222 and the third part 1223 are located inside the gun housing 121, and the first part 1221 is exposed from inside the gun housing 121, the sealant fills the gaps between the inner wall of the gun housing 121 and the second part 1222 of the power terminal 122, the gaps between the inner wall of the gun housing 121 and the third part 1223 of the power terminal 122, the gaps between the inner wall of the gun housing 121 and the cooling pool 123, the gaps between the inner wall of the gun housing 121 and the power line 111, and the gap between the two power terminals 122.

[0121] When the second portion 1222 and the third portion 1223 of the power terminal 122 are located in the first receiving cavity 1211 of the gun housing 121, sealant is filled in the gap between any two of the first receiving cavity 1211, the two cooling pools 123 and the two power terminals 122.

[0122] This application fills the gaps between the inner wall of the gun housing 121 and different components by filling the internal space of the gun housing 121 with sealant. The portion of the sealant located on the side of the cooling pool 123 opposite to the power terminal 122 and the portion of the sealant located on the side of the power terminal 122 opposite to the cooling pool 123 cooperate to press the cooling pool 123 and the power terminal 122 together from both sides, ensuring reliable contact between them. During long-term use of the charging gun 10, the sealant inside the gun housing 121 continuously presses the cooling pool 123 and the power terminal 122 together, maintaining long-term reliable contact between them.

[0123] In addition, the sealant can also conduct heat, increase the heat dissipation area of ​​the power terminal 122, and improve the heat transfer efficiency of the power terminal 122, so that some of the heat from the cooling pool 123 can be conducted to the gun housing 121 and discharged through the sealant, thereby improving the heat dissipation effect of the charging gun 10. Moreover, the sealant can also improve the insulation reliability between the two power terminals 122 of the charging gun 10, and prevent the risk of short circuit between the positive and negative terminals of the two power terminals 122 caused by coolant leakage and condensation.

[0124] In addition, the sealant filled in the first receiving cavity 1211 can improve the sealing protection level of the first receiving cavity 1211, so that the sealing protection capability of the charging gun 10 reaches IPX7.

[0125] For example, the sealant is an insulating and thermally conductive adhesive. Examples include epoxy thermally conductive adhesives, silicone thermally conductive adhesives, and thermally conductive gels.

[0126] It should be understood that the cooling pool 123 and the power terminal 122 can be fixed using only the first fixing method, only the second fixing method, or only the third fixing method. Alternatively, at least two of the first, second, and third fixing methods can be combined. That is, the three fixing methods described above can be used in combination.

[0127] Combined with reference Figure 7 and Figure 8A As shown, in one implementation, the gun head 12 further includes an insulating connector 15, which is fixed inside the gun housing 121, and both ends of the insulating connector 15 extend toward the two opposite inner walls of the gun housing 121, and two power terminals 122 are provided on both sides of the insulating connector 15.

[0128] The insulating connector 15 can be a plate-shaped structure, or a reinforcing rib can be added to the plate-shaped structure. This application does not limit the specific structure of the insulating connector 15, as long as it can separate the two power terminals 122.

[0129] This application provides an insulating connector 15, with two power terminals 122 located on opposite sides of the insulating connector 15. The two power terminals 122 are separated by the insulating connector 15, such that a portion of one power terminal 122 and a cooling pool 123 are located on one side of the insulating connector 15, while a portion of the other power terminal 122 and another cooling pool 123 are located on the other side of the insulating connector 15. In this way, the two power terminals 122 can achieve positive and negative isolation, reducing the risk of short circuits. The two cooling pools 123 are also isolated by the insulating connector 15, which reduces the risk of coolant connecting the two power terminals 122 in the event of coolant leakage.

[0130] In addition, by providing an insulating connector 15 in the first receiving cavity 1211 and placing the insulating connector 15 between the two power terminals 122, the insulating connector 15 can increase the creepage distance between the two power terminals 122, thereby meeting safety requirements and reducing the risk of short circuit in the power terminals 122.

[0131] When the gun casing 121 includes a first receiving cavity 1211, and a portion of the power terminal 122 is located within the first receiving cavity 1211, the insulating connector 15 can divide the first receiving cavity 1211 into two sub-cavities 12111. That is, the first receiving cavity 1211 is divided into two sub-cavities 12111 by the insulating connector 15. Each sub-cavity 12111 contains a portion of the power terminal 122 and a cooling pool 123. In other words, each sub-cavity 12111 contains a portion of the power terminal 122 and a cooling pool 123.

[0132] When the first receiving cavity 1211 is divided into two sub-cavities 12111 by a compartmentalized partition, the compartmentalized partition plus the two sub-cavities 12111 can effectively reduce the risk of short circuit of the two power terminals 122.

[0133] like Figure 5 and Figure 12 As shown, in one implementation, each power line 111 includes multiple sub-lines 1111, one end of each sub-line 1111 extends into the gun housing 121 and is fixed to one of the power terminals 122, and the other end of each sub-line 1111 is electrically connected to the power module.

[0134] That is, this application sets each power line 111 to be divided into multiple sub-lines 1111. By splitting the power line 111 into multiple sub-lines 1111, compared with using a single power line 111, the multiple sub-lines 1111 after splitting can improve the internal space utilization of the gun housing 121 and reduce the bending stress of the power line 111.

[0135] The number of sub-lines 1111 included in each power line 111 is not limited in this application; for example, it can be as follows: Figure 12 The diagram shows two sub-lines 1111, and it can also include three sub-lines 1111.

[0136] After the power line 111 is destrapped, one end of each of the multiple sub-wires 1111 of each power line 111 is connected to the same power terminal 122, and the other end is connected to the power module. Alternatively, one end of each of the multiple sub-wires 1111 of each power line 111 can be individually fixed (e.g., soldered) to the same power terminal 122. Or, one end of each of the multiple sub-wires 1111 of each power line 111 can be crimped together to form a common connection end, and then this common connection end is soldered to the same power terminal 122. By crimping one end of each of the multiple sub-wires 1111 of each power line 111 together to form a common connection end, and then fixing the common connection end to the power terminal 122, the fixing of the power line 111 to the power terminal 122 can be achieved, simplifying the fixing method of multiple sub-wires 1111 of the same power line 111 to the power terminal 122.

[0137] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging gun, characterized in that, It includes a cable and a charging head, one end of which is connected to the charging head, and the other end of which is used to electrically connect to the power module of the charging pile; The gun head includes a gun housing, two power terminals, and two cooling pools, wherein: One end of each power terminal is fixed inside the gun housing and connected to one of the two power lines of the cable, and the other end of each power terminal protrudes from inside the gun housing and is used to plug into a vehicle socket; Both cooling pools are located inside the gun housing, with one cooling pool in contact with one of the power terminals and the other cooling pool in contact with the other power terminal. The two cooling pools are spaced apart, and each cooling pool is used to receive coolant to dissipate heat from the corresponding power terminal.

2. The charging gun according to claim 1, characterized in that, One of the cooling pools is attached to the side of one of the power terminals opposite to the other power terminal.

3. The charging gun according to claim 1, characterized in that, Each of the cooling pools includes a housing that contacts the outer wall of the power terminal, and the housing is made of a thermally conductive and insulating material. The cooling pool includes an inlet and an outlet, both of which are located at the end of the housing near the cable.

4. The charging gun according to claim 3, characterized in that, The outer wall of the housing has a recessed groove facing the power terminal; the groove has an opening near the edge of the housing; The charging gun also includes a screw connector, the head of which is received in the groove and contacts the bottom wall of the groove, and the rod of which passes through the housing and is fixed to the power terminal.

5. The charging gun according to claim 4, characterized in that, The housing is provided with a liquid channel that connects the liquid inlet and the liquid outlet; wherein, along the direction from the cooling pool to the power terminal, the projection of the liquid channel on the power terminal does not overlap with the projection of the screw connector on the power terminal.

6. The charging gun according to claim 4, characterized in that, The groove includes three, one of which is located at the end of the housing near the cable and is disposed between the liquid inlet and the liquid outlet, and the other two grooves are located at the end of the housing away from the cable; The groove located at one end of the housing near the cable has an opening, and the opening is located on the side of the housing facing the cable; The groove located at the end of the housing away from the cable has two openings, one of which is located on the side of the housing facing away from the cable, and the other opening is located on the side of the housing facing the inner wall of the gun housing.

7. The charging gun according to any one of claims 3-6, characterized in that, One of the cooling pools is attached to the side of one of the power terminals opposite to the other power terminal.

8. The charging gun according to any one of claims 1-6, characterized in that, Each of the power terminals includes a first part, a second part, and a third part; wherein the third part is located inside the gun housing and connects the first part and the second part, the first part is located inside the gun housing and one end of the first part facing away from the third part protrudes from the gun housing, and the second part is located inside the gun housing and one end of the second part facing away from the third part is connected to the power line; The third part, facing away from the first part, and the second part, facing the cooling pool, enclose an opening groove. The cooling pool is fixed inside the opening groove, and two adjacent outer walls of the cooling pool are in contact with the third part and the second part, respectively.

9. The charging gun according to claim 8, characterized in that, The gun housing has a protrusion inside, and the protrusion extends from the inner sidewall of the gun housing toward the cooling pool on the side opposite to the power terminal and abuts against the cooling pool.

10. The charging gun according to any one of claims 1-6, characterized in that, The charging gun also includes a sealant; the sealant fills the gap between the inner wall of the gun housing and the end of the power terminal used for connection with the power line, the gap between the inner wall of the gun housing and the cooling pool, the gap between the inner wall of the gun housing and the power line, and the gap between the ends of the two power terminals used for connection with the power line.

11. The charging gun according to any one of claims 1-6, characterized in that, The gun head also includes an insulating connector, which is fixed inside the gun housing, and both ends of the insulating connector extend toward the two opposite inner walls of the gun housing. The two power terminals are located on both sides of the insulating connector.

12. A charging pile, characterized in that, The device includes a pile body, the power module, and a charging gun as described in any one of claims 1-11, wherein the power module is fixed inside the pile body, and the cable of the charging gun is electrically connected to the power module.

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