Charging gun and charging device

Abstract

The embodiment of the utility model provides a charging gun and a charging device, and relates to the field of energy. The charging gun comprises a charging gun head and a cable, the charging gun head comprises a gun base, a cold pool, a positive power terminal and a negative power terminal, the cold pool, the positive power terminal and the negative power terminal are fixed in the gun base, and a space for containing liquid is formed in the cold pool. The cable comprises one or more power lines, one end of each power line extends into the gun base to be electrically connected with the power terminal, and the other end of each power line is used for being connected with a power module of the charging device. The anode power line is connected with the anode power terminal, and the cathode power line is connected with the cathode power terminal. The cable further comprises a communicating pipe, a collecting pipe and one or more cooling pipes, the cooling pipes and the power lines are correspondingly arranged, and at least part of each power line is located in the corresponding cooling pipe. The communicating pipe communicates with one end of the cooling pipe and further communicates with the cold pool, one end of the collecting pipe communicates with the cold pool, and the other end of the collecting pipe and the other end of the cooling pipe are used for communicating with a heat exchanger of the charging device.

Description

Technical Field

[0001] This application relates to the energy field, and more particularly to a charging gun and a charging device. Background Technology

[0002] With the rapid development of new energy technologies, the market share of electric vehicles is rising steadily, and users' demands for vehicle charging are also increasing. Charging speed is a key indicator that users are concerned about, and one way to improve charging speed is to use high-power charging technology. However, excessively high power can lead to high heat generation in the charging device; therefore, achieving effective heat dissipation for the charging device is a problem that urgently needs to be solved. Utility Model Content

[0003] This application provides a charging gun and a charging device, which improves the heat dissipation problem of the charging device during the charging process and makes the heat dissipation effect of the charging device better.

[0004] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0005] A first aspect of this application provides a charging gun for a charging device, the charging gun including a charging gun head and a cable. The charging gun head includes a gun base, a cold pool and power terminals fixed within the gun base. The power terminals include a positive power terminal and a negative power terminal. The cold pool has a space for containing liquid. The cable includes a positive power line and a negative power line, the positive power line connecting to the positive power terminal and the negative power line connecting to the negative power terminal. Each type of positive and negative power line includes one or more power lines, one end of which extends into the gun base and is electrically connected to the corresponding power terminal. The other end of each power line is used to connect to the power module of the charging device. The cable also includes a connecting pipe, a manifold, and two sets of cooling pipes. Each set of cooling pipes includes one or more cooling pipes, and the one or more cooling pipes and one or more power lines are arranged in a one-to-one correspondence. Each power line is at least partially located within a corresponding cooling pipe. The connecting pipe is connected to one end of the one or more cooling pipes and is also connected to the cold pool. One end of the manifold is connected to the cold pool, and the other end of the manifold and the other end of the one or more cooling pipes are used to connect to the heat exchanger of the charging device.

[0006] The charging gun provided in this embodiment includes a gun base, a cooling pad, a positive power terminal, and a negative power terminal fixed within the gun base. The cable includes a positive power wire connected to the positive power terminal and a negative power wire connected to the negative power terminal, with each power wire comprising one or more power lines. For example, a positive power wire comprising one power line is easier to manage and less expensive. A positive power wire comprising multiple power lines has a stronger current carrying capacity and a larger surface area for better heat dissipation. One end of each power wire extends into the gun base and is electrically connected to the corresponding power terminal, while the other end connects to the power module of the charging device. This allows electrical energy to be transferred from the power module to the cable and then to the charging gun head, thus enabling charging.

[0007] The cable also includes two sets of cooling pipes: one set for cooling the positive power line and the other for cooling the negative power line. Each set includes one or more cooling pipes, with each cooling pipe corresponding to one or more power lines. Each power line is at least partially located within its corresponding cooling pipe, which dissipates heat from the power line within it; this cooling method is also known as "immersion cooling."

[0008] The cable also includes a connecting pipe and a manifold, and the cold pool has a space inside for containing liquid. The connecting pipe is connected to one end of one or more cooling pipes and also to the cold pool. One end of the manifold is connected to the cold pool, and the other end of the manifold, along with the other end of one or more cooling pipes, is connected to the heat exchanger of the charging device. The liquid can flow through the cooling pipes, connecting pipe, cold pool, manifold, and radiator, carrying away the heat generated by the power lines, thereby improving the heat dissipation of the charging gun during charging and making the charging gun's heat dissipation effect better.

[0009] Furthermore, since the cooling pipe is connected to the cold pool through the connecting pipe, the immersion-type heat dissipation cold pool provided in this application embodiment can be used interchangeably with the isolation-type heat dissipation cold pool, thereby reducing the development cost of the charging gun head.

[0010] In one embodiment of this application, the charging device further includes two sets of adapters, each set of adapters including one or more adapters, and the one or more adapters are correspondingly arranged with one or more cooling pipes. Each adapter includes a connecting terminal and a terminal sleeve, the terminal sleeve being sleeved outside the connecting terminal, and the inner surface of the terminal sleeve having a first flow channel for liquid flow between it and the connecting terminal. The first flow channel connects a connecting pipe and a corresponding cooling pipe, one end of the connecting terminal is electrically connected to one end of a power line in the corresponding cooling pipe, and the other end of the connecting terminal is electrically connected to a corresponding power terminal.

[0011] Since each power line is at least partially located within its corresponding cooling pipe, and each power line needs to be connected to its corresponding power terminal, and each cooling pipe needs to be connected to the cold pool via a connecting pipe, these two types of connections require adapters. Two sets of adapters are provided, each set including one or more adapters, each corresponding to one or more cooling pipes. Each adapter can be used to achieve both types of connections between a power line and its corresponding cooling pipe. Taking one adapter as an example, the adapter includes a connecting terminal and a terminal sleeve, with the terminal sleeve fitted over the connecting terminal. The inner surface of the terminal sleeve has a first flow channel between itself and the connecting terminal, allowing liquid to flow through a connecting pipe and a corresponding cooling pipe, thus connecting the cooling pipe to the cold pool via the connecting pipe. One end of the connecting terminal is electrically connected to one end of the power line within the corresponding cooling pipe, and the other end of the connecting terminal is electrically connected to the power terminal, thus connecting the power line to the corresponding power terminal.

[0012] In one embodiment of this application, both ends of the connecting terminal extend outside the terminal sleeve, and one end of each cooling pipe is sleeved on one end of the corresponding connecting terminal. The connecting terminal has a second flow channel inside, and the connecting terminal also has a first opening and a second opening communicating with the second flow channel. The first opening is disposed on the surface of the portion of the connecting terminal located inside the terminal sleeve and communicates with the first flow channel, and the second opening is disposed on the outer surface of one end of the connecting terminal and communicates with the corresponding cooling pipe.

[0013] Both ends of the connecting terminal extend beyond the terminal sleeve, facilitating electrical connection between the two ends of the connecting terminal and the power line and the corresponding power terminal, respectively. The connecting terminal has a second flow channel and a first opening and a second opening communicating with the second flow channel. At the end where the connecting terminal connects to the power line, a cooling tube corresponding to that power line is sleeved on that end of the connecting terminal. Liquid needs to communicate with the first flow channel through the second opening on the outer surface of this end of the connecting terminal, the second flow channel, the first opening on the surface of the portion of the connecting terminal located inside the terminal sleeve, and then through the first flow channel and the connecting tube. For example, liquid flows from the cooling tube into the second flow channel through the second opening, flows out of the second flow channel through the first opening and flows into the first flow channel, flows into the connecting tube through the first flow channel, and then flows into the cold pool.

[0014] In one embodiment of this application, each adapter further includes a plurality of first seals, which are sleeved on the outside of the connecting terminal and abut against the inner wall of the terminal sleeve. Some of the first seals are disposed at one end of the terminal sleeve, and another portion of the first seals are disposed at the other end of the terminal sleeve.

[0015] Multiple first seals are fitted over the connecting terminal and abut against the inner wall of the terminal sleeve, achieving a seal between the connecting terminal and the terminal sleeve. Some of the first seals are located at one end of the terminal sleeve, while others are located at the other end. A first flow channel is situated between these two seals. By sealing both sides of the first flow channel with multiple first seals, the possibility of liquid leakage in the first flow channel can be reduced.

[0016] In one embodiment of this application, each adapter further includes a second seal, which is sleeved on one end of the connecting terminal and abuts against the inner wall surface of one end of the corresponding cooling pipe.

[0017] The second sealing element is fitted onto one end of the connecting terminal and abuts against the inner wall of the cooling pipe fitted outside the connecting terminal, thereby achieving a seal between the cooling pipe and the connecting terminal and reducing the possibility of liquid leakage from the cooling pipe.

[0018] In one embodiment of this application, one end of the connecting terminal has an outwardly protruding annular protrusion, and one end of each cooling pipe is sleeved on the corresponding annular protrusion, with the annular protrusion contacting the inner wall surface of one end of the corresponding cooling pipe.

[0019] An annular protrusion is located at the end of the connecting terminal where the cooling tube is sleeved, and the cooling tube is sleeved outside the annular protrusion of the corresponding connecting terminal. The annular protrusion contacts the inner wall surface of one end of the cooling tube. This allows for a more secure connection between the cooling tube and the connecting terminal, reducing the possibility of liquid leakage from the cooling tube.

[0020] In one embodiment of this application, each adapter further includes a wiring protrusion fixed to a terminal sleeve. The internal space of the wiring protrusion is in communication with a first flow channel. The wiring protrusion has a wiring port facing away from the power terminal, and the wiring port is in communication with a connecting pipe.

[0021] The wiring protrusion can connect the cooling pipe and the connecting pipe. Since the wiring port is located away from the power terminal, the connecting pipe can be connected to the wiring protrusion with less bending, making it easier to connect the connecting pipe and the cooling pipe.

[0022] In one embodiment of this application, each of the positive and negative power lines includes multiple power lines, and each group of cooling pipes includes multiple cooling pipes. The charging device also includes a shunt, which includes a first groove and multiple second grooves that are connected. The connecting pipe includes a main pipe and multiple branch pipes. One end of the main pipe is connected to the cold pool, and the other end of the main pipe is connected to the first groove. One end of each of the multiple branch pipes is connected to a multiple second groove, and the other end of each of the multiple branch pipes is connected to one end of each of the multiple cooling pipes.

[0023] Each of the positive and negative power lines includes multiple power lines, and each group of cooling pipes includes multiple cooling pipes. The multiple cooling pipes are connected to the cold pool via connecting pipes. The charging device also includes a shunt, which includes a first groove and multiple second grooves. The connecting pipe includes a main pipe and multiple branch pipes; one end of the main pipe is connected to the cold pool, and the other end of the main pipe is connected to the first groove. One end of each of the multiple branch pipes is connected to one of the multiple second grooves, and the other end of each of the multiple branch pipes is connected to one end of each of the multiple cooling pipes. By using a shunt to connect the cooling pipes to the cold pool, the number of connecting pipes connected to the cold pool can be reduced, thereby reducing the impact on the volume of the cold pool. In some examples, each group of adapters includes multiple adapters.

[0024] A second aspect of this application provides a charging device, which includes a power module, a heat exchanger, and any of the charging guns provided in the first aspect of this application. One or more power lines are connected at one end to the power module, and one or more cooling pipes and the other end of a manifold are connected to the heat exchanger.

[0025] The power module converts AC power supplied by the external power grid into DC power, which is then transmitted through one or more power lines and finally output to the power terminals. During charging, the charging gun generates significant heat, primarily from the power lines and power terminals. Using the charging gun provided in the first aspect of this application improves the heat dissipation of the charging device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a charging device provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of another charging device provided in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of a charging gun head provided in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the structure of a charging gun provided in an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the structure of a cable provided in an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the structure of a charging device provided in an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the structure of an adapter provided in an embodiment of this application;

[0033] Figure 8This is a schematic diagram of the structure of a connection terminal provided in an embodiment of this application;

[0034] Figure 9 This is a schematic diagram of another connection terminal provided in an embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the structure of a terminal sleeve provided in an embodiment of this application;

[0036] Figure 11 This is a schematic diagram of another adapter provided in an embodiment of this application;

[0037] Figure 12 This is a schematic diagram of another charging device provided in an embodiment of this application;

[0038] Figure 13 This is a schematic diagram of the structure of a flow divider provided in an embodiment of this application;

[0039] Figure 14 This is a schematic diagram of another charging device provided in an embodiment of this application.

[0040] 10-Charging device; 11-Charging host; 12-Charging terminal; 30-Charging gun; 13-Charging gun head; 14-Cable; 15-Power module; 16-Liquid cooling assembly; 20-External power grid; 21-Electric vehicle; 31-Power terminal; 311-Positive power terminal; 312-Negative power terminal; 32-Signal terminal; 321-Connection confirmation signal terminal; 322-Communication signal terminal; 33-Auxiliary power terminal; 331-Positive auxiliary power terminal; 332-Negative auxiliary power terminal; 34-Grounding terminal; 35-Cold pool; 351-First cold pool; 352-Second cold pool; 36-Gun holder; 41-Power line; 411-Positive power line; 412-Negative power line 42-Signal line; 43-Auxiliary power line; 44-Ground line; 45-Cooling pipe; 451-First cooling pipe; 452-Second cooling pipe; 46-Connecting pipe; 461-Main pipe; 462-Branch pipe; 47-Manifold; 48-Adapter; 481-Connecting terminal; 482-Terminal sleeve; 483-First flow channel; 484-Second flow channel; 485-Receiving cavity; 486-First seal; 487-Second seal; 488-Wiring protrusion; 4881-Connecting structure; 489-Annular protrusion; 49-Diverter; 491-First groove; 492-Second groove; 01-First opening; 02-Second opening; 03-Wiring hole; 04-Wiring port. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0042] Hereinafter, 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 indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0043] The terms collinearity, symmetry (e.g., axial symmetry, or central symmetry), parallelism, perpendicularity, orthogonality, and similarity (e.g., same length, same width, etc.) mentioned in the embodiments of this application are all relative to the current technological level, and not absolute and strict mathematical definitions. Collinearity of three elements can be understood as the line connecting two elements, or its extension, intersecting with another element, or the closest distance to another element being approximately 2mm. A predetermined angular deviation may exist between two parallel or perpendicular components. In some embodiments, the predetermined threshold may be less than or equal to a threshold of 1mm, for example, the predetermined threshold may be 0.5mm or 0.1mm. In some embodiments, the predetermined angle may be an angle within the range of ±10°, for example, a predetermined angular deviation of ±5°.

[0044] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed mechanical connection, a detachable mechanical connection, or an integral part; or, "connection" may be a direct connection or an indirect connection through an intermediate medium.

[0045] In the accompanying drawings of the embodiments of this application, components are indicated by arrowed guide lines, and parts are indicated by guide lines only.

[0046] Furthermore, in the embodiments of this application, directional terms such as "upper" and "lower" are defined relative to the orientation in which the components are schematically placed in the accompanying 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 in which the components are placed in the accompanying drawings.

[0047] With the development of new energy vehicle technology, many car manufacturers have gradually launched electric vehicles. Electric vehicles have become the choice of many users due to their energy saving, environmental protection and relatively mature technology.

[0048] Figure 1 An exemplary schematic diagram of a charging device 10 provided in an embodiment of this application is shown, such as... Figure 1 As shown, the charging device 10 can be used to receive AC power output from the external power grid 20, convert the AC power into stable DC power, and then supply it to the electric vehicle 21 to charge the electric vehicle 21.

[0049] Among them, electric vehicle 21 can be a means of transportation driven by electric energy. For example, electric vehicle 21 can be a pure electric vehicle (battery electric vehicle, pure EV / batteryEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), or a plug-in hybrid electric vehicle (PHEV), etc.

[0050] In some embodiments, such as Figure 1 As shown, the charging device 10 is a split-type charging pile. In this case, the charging device 10 may include a charging host 11, at least one charging terminal 12, and at least one charging gun 30. The charging gun 30 includes a charging head 13 and a cable 14. The charging terminal 12 and the charging head 13 are electrically connected via the cable 14. For example, as... Figure 1 Multiple charging terminals 12 are provided, as are multiple charging gun heads 13 and cables 14. Each charging terminal 12 is connected to the charging gun head 13 via a cable 14.

[0051] In this case, such as Figure 1 As shown, the charging device 10 may include a power module 15. In some examples, the power module 15 may be located inside the main unit cabinet of the charging host 11, and the output of the power module 15 is connected to multiple charging terminals 12, the charging gun head 13 of each charging terminal 12 being used to connect to the electric vehicle 21.

[0052] In some examples, power module 15 may include multiple alternating current-to-direct current (AC-DC) modules and multiple direct current-to-direct current (DC-DC) modules. In other examples, power module 15 may include multiple AC-to-DC modules instead of DC-to-DC modules.

[0053] In addition, in some examples, the charging terminal 12 also includes a power distribution component ( Figure 1(Not shown in the image) This is used for circuit switching control, current detection, and overcurrent protection. For example, the power distribution component may include contactors, shunts, and fuses, etc., but this application does not impose specific limitations on this. The power distribution component is located in the terminal cabinet of the charging terminal 12. The output terminal of the power module 15 is connected to the power distribution component of the charging terminal 12 via a cable, supplying DC power to the power distribution component. The power distribution component and the charging gun head 13 are connected via a cable 14, further supplying DC power to the charging gun head 13. The charging gun head 13 is connected to the charging interface of the electric vehicle 21, thereby enabling the DC power output from the power module 15 to be supplied to the electric vehicle 21.

[0054] In addition, the charging terminal 12 may also include a housing, a human-machine interface and a metering and billing unit, and is used to exchange information and perform metering and billing with the electric vehicle 21.

[0055] Figure 2 An exemplary schematic diagram of another charging device 10 provided in an embodiment of this application is shown, such as... Figure 2 As shown, the charging device 10 is an integrated charging pile. The charging device 10 can integrate the charging gun head 13, cable 14, power module 15, human-machine interface, and metering and billing unit together. In this case, such as... Figure 2 As shown, the multiple power modules 15 in the cabinet of the charging device 10 can convert the AC power from the external power grid 20 into stable DC power, and then directly transmit it to the electric vehicle 21 through the cable 14 and the charging gun head 13.

[0056] As users demand higher charging speeds, the charging device 10 is constantly evolving into a supercharging charging device. The power module 15 in the charging device 10 outputs more power to the electric vehicle 21 through the cable 14 and the charging gun 13, so as to be able to supercharge the power battery of the electric vehicle 21.

[0057] In order to achieve high-power charging, Figure 3 An exemplary schematic diagram of the structure of a charging gun head 13 provided in an embodiment of this application is shown, such as... Figure 3 As shown, the charging gun head 13 includes a power terminal 31, a signal terminal 32, an auxiliary power terminal 33, and a ground terminal 34 fixed in the gun holder.

[0058] The power terminal 31 may include a positive power terminal 311 and a negative power terminal 312. The positive power terminal 311 and the negative power terminal 312 are used to supply direct current to the electric vehicle. The signal terminal 32 may include a connection confirmation signal terminal 321, which is used to transmit a connection confirmation signal with the electric vehicle. By detecting the voltage of the connection confirmation signal, the connection status between the charging gun head 13 and the electric vehicle can be determined. The connection status may include not connected, partially connected, and fully connected. The auxiliary power terminal 33 may include a positive auxiliary power terminal 331 and a negative auxiliary power terminal 332. The positive auxiliary power terminal 331 and the negative auxiliary power terminal 332 are used to connect to the positive and negative auxiliary power lines of the cable, respectively. The positive and negative auxiliary power lines can provide low-voltage auxiliary power during charging to ensure the stable operation of the electrical components within the charging device.

[0059] In addition, the signal terminal 32 may also include a communication signal terminal 322. During charging, the communication signal terminal 322 is used to transmit messages sent by the electric vehicle to the charging host. These messages may include at least one of the following: a message requesting the liquid cooling assembly to output coolant, a message indicating the required flow rate of the coolant, and a message indicating the required temperature of the coolant.

[0060] In some embodiments, such as Figure 4 As shown, the charging gun head 13 includes a gun base 36, and one end of the cable 14 extends into the gun base 36 to facilitate the connection between the charging gun head 13 and the cable 14.

[0061] In order to be compatible with the aforementioned charging gun head 13, Figure 5 An exemplary schematic diagram of the structure of a cable 14 in the related art of this application is shown. For example... Figure 5 As shown, cable 14 may include a positive power line 411 and a negative power line 412, each including one power line. Figure 4 As shown, one end of the positive power line 411 and the negative power line 412 extends into the gun holder. One end of the positive power line 411 is connected to the positive power terminal 311, and one end of the negative power line 412 is connected to the negative power terminal 312. The other ends of the positive power line 411 and the negative power line 412 are connected to the power module 15, thereby transmitting DC power to the electric vehicle.

[0062] In some examples, each of the positive power line 411 and the negative power line 412 includes multiple power lines. Multiple power lines have a stronger current carrying capacity than a single power line and a larger surface area, which is beneficial for heat dissipation.

[0063] In some embodiments, the power line 41 in cable 14 is connected to power module 15. Power module 15 is used to convert alternating current (AC) to direct current (DC). For example, ... Figure 1 The power module 15 can convert the alternating current from the external power grid 20 into a stable direct current, so that the charging device 10 can deliver the stable direct current to the electric vehicle 21.

[0064] In some embodiments, such as Figure 5 As shown, cable 14 may also include multiple signal lines 42. The multiple signal lines 42 may include a first signal line and a second signal line. The first signal line is used to connect to a connection confirmation signal terminal to transmit a connection confirmation signal. The second signal line is used to connect to a communication signal terminal to transmit messages sent by the electric vehicle. In some examples, signal lines 42 transmitting similar signals may be twisted together. For example... Figure 5 The two signal lines 42 at point A are twisted together.

[0065] In some embodiments, such as Figure 5 As shown, cable 14 may also include an auxiliary power line 43. The auxiliary power line 43 may include a positive auxiliary power line and a negative auxiliary power line. The auxiliary power line 43 is used to connect to the auxiliary power terminal of the charging gun head to provide low-voltage auxiliary power. In some embodiments, continuing as... Figure 5 As shown, cable 14 may also include a ground wire 44. Ground wire 44 can be used to connect to the grounding terminal of the charging gun head.

[0066] As the charging power of the charging device continues to increase, the charging gun head 13 and cable 14, especially the power terminal 31 of the charging gun head 13 and the power line 41 of the cable 14, will generate high heat during the charging process. To improve the heat dissipation of the charging gun head 13 and cable 14, Figure 6 An exemplary schematic diagram of a charging device 10 provided in an embodiment of this application is shown.

[0067] In some embodiments, such as Figure 6 As shown, the charging gun head 13 may also include a cold pool 35. Combined with... Figure 4 The cold pool 35 is fixed inside the gun holder 36. The interior of the cold pool 35 has space for containing a liquid (e.g., a cooling medium such as a water-based solution or an oil-based solution). The cable also includes a connecting pipe 46, a manifold 47, and two sets of cooling pipes 45, for example, one set being a first cooling pipe 451 and the other a second cooling pipe 452. The positive power line 411 is disposed inside the first cooling pipe 451, and the negative power line 412 is disposed inside the second cooling pipe 452. The connecting pipe 46 is connected to one end of the cooling pipes 45 and is also connected to the cold pool 35. One end of the manifold 47 is connected to the cold pool 35.

[0068] In some embodiments, cooling pipes and power lines are arranged in a one-to-one correspondence, with each power line at least partially located within a corresponding cooling pipe. In some examples, each of the positive power line 411 and the negative power line 412 includes one power line, one group includes a first cooling pipe 451, and another group includes a second cooling pipe 452. In other examples, each of the positive power line 411 and the negative power line 412 includes multiple power lines, one group includes multiple first cooling pipes 451, and another group includes multiple second cooling pipes 452.

[0069] It should be noted that the positive power terminal, positive power line, and first cooling pipe are arranged in the same way as the negative power terminal, negative power line, and negative power terminal. For ease of explanation, the following will use "power terminal" to refer to the positive power terminal and / or negative power terminal, "power line" to refer to the positive power line and / or negative power line, and "cooling pipe" to refer to the first cooling pipe and / or the second cooling pipe.

[0070] In some embodiments, such as Figure 1 or Figure 2 As shown, the charging device 10 also includes a liquid cooling assembly 16. In a split-type charging pile, the liquid cooling assembly 16 can be installed as follows: Figure 1 In the charging terminal 12 shown. In the integrated charging pile, the liquid cooling component 16 can be set as follows: Figure 2 The charging device 10 shown is located in the cabinet.

[0071] In some embodiments, such as Figure 6 As shown, the liquid cooling assembly 16 includes a heat exchanger and a drive unit ( Figure 6 (Not shown in the image). The other end of the manifold 47 and the other end of the cooling pipe 45 are used to connect the heat exchanger and the drive unit of the liquid cooling assembly 16. The drive unit is used to drive the liquid to flow in the cooling pipe 451 and the manifold 47, and the heat exchanger is used to cool the liquid. Driven by the drive unit, the liquid flows out of the heat exchanger and into the cooling pipe 45 of the cable 14. The liquid in the cooling pipe 45 flows in the cable 14, cooling the cable 14, and finally flows into the cold pool 35 of the charging gun head 13. Then, the cooling medium in the cold pool 35 flows to the manifold 47 of the cable 14 and flows back to the heat exchanger through the manifold 47. In some examples, the drive unit is a water pump.

[0072] For example, the liquid cooling assembly 16 also includes a heat exchange fan. After the liquid absorbs heat from the charging nozzle 13 and the cable 14, it flows into the first heat exchange channel of the heat exchanger in the liquid cooling assembly 16. The heat exchange fan blows air towards the heat exchanger, causing the cooling medium to exchange heat with the air through the heat exchanger. After the liquid temperature decreases in the heat exchanger, it flows back into the cooling pipe 45 to cool the charging device 10.

[0073] In this configuration, the power line 41 is at least partially located within the cooling pipe 45, which serves to dissipate heat from the power line 41. The cold pool 35 contains a space for containing liquid. The cooling pipe 45 is connected to the cold pool 35 via a connecting pipe 46 and a manifold 47, allowing the liquid to flow through the cooling pipe 45, connecting pipe 46, cold pool 35, manifold 47, and heat exchanger. This flow carries away the heat generated by the power line 41, improving heat dissipation for the charging gun during charging.

[0074] In some embodiments, such as Figure 6 As shown, the power terminal 31 of the charging gun head 13 is fixedly connected to the cold pool 35. In this way, the liquid in the cold pool 35 can dissipate the heat generated by the power terminal 31, further improving the heat dissipation problem of the charging device 10 during the charging process.

[0075] In some examples, such as Figure 5 As shown, the power line 41 is at least partially located inside the cooling pipe 45; this cooling method is also called "immersion cooling". For example, the power line 41 may be entirely located inside the cooling pipe 45. Another example is that a portion of the power line 41 is located inside the cooling pipe 45, and another portion is located outside the cooling pipe 45. In some other examples, the power line 41 is in contact with the outer wall of the cooling pipe 45; this cooling method is also called "isolation cooling".

[0076] In related technologies, the design schemes of isolated cooling and immersion cooling charging gun heads differ greatly, and the gun holder and cold pool 35 cannot be shared, resulting in high development costs and long development cycles for the charging gun heads. Although the charging device provided in this application embodiment adopts an immersion cooling scheme, the gun head and cold pool 35 can be shared with the isolated cooling scheme, which can reduce the development cost of the charging gun head.

[0077] In some embodiments, such as Figure 6 As shown, the charging device 10 also includes two sets of adapters 48, each set including one or more adapters 48. One set of adapters 48 is configured to correspond one-to-one with one or more first cooling pipes 451, and the other set of adapters 48 is configured to correspond to one or more second cooling pipes 452. The adapters 48 can be used to connect the cooling pipes 45 and the connecting pipe 46, as well as to electrically connect the power line 41 and the power terminal 31. The two sets of adapters 48 are configured in the same way. For ease of explanation, the term "cooling pipe 45" will be used to refer to the first cooling pipe 451 and / or the second cooling pipe 452.

[0078] In some examples, such as combination Figure 6 and Figure 7As shown, the adapter 48 may include a connecting terminal 481 and a terminal sleeve 482. The terminal sleeve 482 is fitted over the connecting terminal 481, and a first flow channel 483 for liquid flow is formed between the inner surface of the terminal sleeve 482 and the connecting terminal 481. The first flow channel 483 connects to a connecting pipe 47 and a cooling pipe 46 corresponding to the terminal sleeve. One end of the connecting terminal 481 is electrically connected to one end of a power line 41 in the corresponding cooling pipe 45, and the other end of the connecting terminal 481 is electrically connected to a corresponding power terminal 31.

[0079] Since each power line 41 is at least partially located within its corresponding cooling pipe 45, and each power line 41 needs to be connected to its corresponding power terminal 31, and each cooling pipe 45 needs to be connected to the cold pool 35 via a connecting pipe 46, these two types of connections are achieved through adapters 48. There are two sets of adapters 48, each set including one or more adapters 48, with each adapter 48 corresponding to one or more cooling pipes 45. Each adapter 48 can be used to achieve both types of connections between a power line 41 and its corresponding cooling pipe 45.

[0080] In some embodiments, such as Figure 7 As shown, a receiving cavity 485 is provided at the end of the connection terminal 481 opposite to the power terminal, and a part of the power line extends into the receiving cavity 485 and is electrically connected to the connection terminal 481.

[0081] In some embodiments, such as Figure 8 As shown, the connection terminal 481 has a second flow channel 484 inside. A cooling pipe 45 is sleeved on one end of the connection terminal 481. The portion of the connection terminal 481 located inside the cooling pipe 45 is connected to the power line 41. Furthermore, the connection terminal 481 also has a first opening 01 and a second opening 02, which communicate with the second flow channel 484. Figure 7 , Figure 8 and Figure 9 The first opening 01 is provided on the surface of the portion of the connecting terminal 481 located inside the terminal sleeve 482 and communicates with the first flow channel 483. The second opening 02 is provided on the outer surface of the end of the connecting terminal 481 that connects to the power line 41 and communicates with the corresponding cooling pipe 45.

[0082] In this way, the liquid in the cooling pipe 45 needs to be connected to the first flow channel 483 through the second opening 02, the second flow channel 484, the first opening 01, and then to the connecting pipe 46 through the first flow channel 483. For example, the liquid flows from the cooling pipe 45 into the second flow channel 484 through the second opening 02, flows out of the second flow channel 484 through the first opening 01 and flows into the first flow channel 483, flows into the connecting pipe 46 through the first flow channel 483, and then flows into the cold pool 35.

[0083] In some embodiments, a cooling pipe 45 is sleeved on one end of a connecting terminal 481, and a clamping device is provided on the outside of the cooling pipe 45. The clamping device enables a more stable connection between the cooling pipe 45 and the connecting terminal 481.

[0084] In some embodiments, such as Figure 7 As shown, the first flow channel 483 surrounds the connecting terminal 481. Because the first flow channel 483 is annular, regardless of where the cooling pipe 45 is connected circumferentially to the terminal sleeve 482, communication between the cooling pipe 45 and the first flow channel 483 can be achieved. This allows the liquid flowing out of the first opening 01 to flow into the cooling pipe 45 after entering the first flow channel 483, improving the flexibility of the connection position of the cooling pipe 45. In some examples, such as... Figure 8 As shown, the connection terminal 481 may have two first openings 01. In some examples, such as Figure 8 As shown, the axes of the two first openings 01 are collinear.

[0085] In some embodiments, such as Figure 9 As shown, the adapter 48 may also include a plurality of first seals 486. Combined with Figure 7 and Figure 9 Multiple first seals 486 are sleeved around the connecting terminal 481, and abut against the inner wall of the terminal sleeve 482, thereby achieving a seal between the connecting terminal 481 and the terminal sleeve 482. Of the multiple first seals 486, some are located at one end of the terminal sleeve 482, and others are located at the other end. Since the first flow channel 483 is located between some of the seals 486 and the other part of the seals 486, sealing both sides of the first flow channel 483 with multiple first seals 486 reduces the possibility of liquid leakage in the first flow channel 483. In some examples, the first seals 486 can be sealing rings.

[0086] In some embodiments, combined with Figure 8 and Figure 9 The adapter 48 may also include a second seal 487. The second seal 487 is sleeved on one end of the connecting terminal 481 and abuts against the inner wall surface of the end of the corresponding cooling pipe 45 that is connected to the connecting terminal 481, thereby achieving a seal between the cooling pipe 45 and the connecting terminal 481 and reducing the possibility of liquid leakage from the cooling pipe 45.

[0087] In some embodiments, combined with Figure 8 and Figure 9The connecting terminal 481 has an outwardly protruding annular protrusion 489. One end of each cooling pipe 45 connected to the connecting terminal 481 is sleeved on the corresponding annular protrusion 489. The annular protrusion 489 contacts the inner wall surface of this end of the corresponding cooling pipe 45, which can make the connection between the cooling pipe 45 and the connecting terminal 481 more secure and reduce the possibility of liquid leakage in the cooling pipe 45.

[0088] In some embodiments, such as Figure 7 As shown, the adapter 48 may include a wiring hole 03, which is connected to a connecting pipe and a cooling pipe. The wiring hole 03 may be located on the side wall of the terminal sleeve 482. The connection between the connecting pipe and the wiring hole 03 requires bending and is not secure.

[0089] In some embodiments, such as Figure 11 As shown, terminal sleeve 482 is connected to cooling pipe 45, and first flow channel 483 is connected to cooling pipe 45. Liquid can flow directly from cooling pipe 45 into first flow channel 483. In some examples, such as... Figure 11 As shown, one end of the connecting terminal 481 extends beyond the terminal sleeve 482. In other examples, such as... Figure 8 As shown, both ends of the connecting terminal 481 extend outside the terminal sleeve 482.

[0090] In some embodiments, such as Figure 10 As shown, the adapter 48 may also include a wiring protrusion 488. The wiring protrusion 488 is fixed on the terminal sleeve 482, the internal space of the wiring protrusion 488 is in communication with the first flow channel 483, and the wiring protrusion 488 has a wiring port 04 facing away from the power terminal, the wiring port 04 being in communication with the connecting pipe.

[0091] The wiring protrusion 488 of the adapter 48 can connect the cooling pipe and the connecting pipe. Since the wiring port 04 of the connecting pipe is set away from the power terminal, the connecting pipe can be connected to the wiring protrusion 488 with a small degree of bending, making it easier to connect the connecting pipe and the cooling pipe.

[0092] In some examples, such as Figure 10 As shown, the volume of the connecting protrusion 488 is smaller than that of the terminal sleeve 482. In some examples, it continues as follows... Figure 10 As shown, the wiring protrusion 488 may include a connecting structure 4881. At least a portion of the connecting structure 4881 is located within the connecting tube. The connecting structure 4881 allows for a more secure connection between the wiring protrusion and the connecting tube. In some examples, a third seal is provided between the connecting structure 4881 and the connecting tube. The third seal is, for example, a sealing ring.

[0093] To achieve higher charging power, Figure 12An exemplary embodiment of this application provides another charging device 10, in which each of the positive power line 411 and the negative power line 412 includes multiple power lines 41, for example, two power lines 41. The multiple power lines 41 correspond to multiple cooling pipes 45, which are connected to the cold pool 35 through multiple connecting pipes 46, resulting in an increase in the volume of the cold pool 35.

[0094] To reduce the impact of the connecting pipe 46 on the volume of the cold pool 35 in scenarios with multiple power lines 41, in some embodiments, such as Figure 12 As shown, the charging device 10 may further include a shunt member 49. The shunt member 49 is used to connect the cooling pipe 45 to the cold pool 35. Figure 13 As shown, the diverter 49 includes a first groove 491 and a plurality of second grooves 492 that are connected. Figure 12 and Figure 13 The connecting pipe 46 includes a main pipe 461 and multiple branch pipes 462. One end of the main pipe 461 is connected to the cold pool 35, and the other end of the main pipe 461 is connected to the first groove 491. One end of each of the multiple branch pipes 462 is connected to a multiple second groove 492, and the other end of each of the multiple branch pipes 462 is connected to one end of each of the multiple cooling pipes 45.

[0095] By using a branch pipe 49 to connect the cooling pipe 45 and the cold pool 35, the number of connecting pipes 46 connected to the cold pool 35 can be reduced, thereby reducing the impact on the volume of the cold pool 35. In some examples, the other end of each branch pipe 462 is connected to the corresponding cooling pipe 45 via an adapter 48.

[0096] In some embodiments, combined with Figure 12 and Figure 13 The first groove 491 and a plurality of second grooves 492 are located on the side of the shunt 49 facing the power terminal 31, and the main pipe 461 and a plurality of branch pipes 462 are located between the cold pool 35 and the shunt 49. This facilitates the connection of the connecting pipe 46 to the cold pool 35 and the shunt 49.

[0097] With the continuous improvement of charging power, in some embodiments, such as Figure 14 The charging device 10 shown may include multiple pairs of power terminals 31, such as two pairs of power terminals 31. In some embodiments, the charging device 10 includes a cold pool, with multiple pairs of power terminals 31 sharing a single cold pool. In other embodiments, such as... Figure 14 As shown, the charging device 10 includes multiple cold pools, such as a first cold pool 351 and a second cold pool 352. A pair of power terminals 31 are fixedly connected to the first cold pool 351, and another pair of power terminals 31 are fixedly connected to the second cold pool 352.

[0098] 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.

[0099] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope 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 for a charging device, characterized in that, The charging gun head and the cable; The charging gun head comprises a gun seat, a cold pool and power terminals fixed in the gun seat, the power terminals comprise positive and negative power terminals, and the cold pool has a space inside for containing liquid; The cable comprises positive and negative power lines, the positive power line is connected to the positive power terminal, and the negative power line is connected to the negative power terminal; Each of the positive and negative power lines comprises one or more power lines, one end of the one or more power lines extends into the gun seat, the one end of the one or more power lines is electrically connected to the corresponding power terminal, and the other end of the one or more power lines is used for connecting a power module of the charging device; The cable further comprises a communication pipe, a confluence pipe and two groups of cooling pipes, each group of the cooling pipes comprises one or more cooling pipes, the one or more cooling pipes and the one or more power lines are arranged one-to-one, each of the power lines is at least partially located in the corresponding cooling pipe, one end of the communication pipe is in communication with the one or more cooling pipes, the communication pipe is also in communication with the cold pool, one end of the confluence pipe is in communication with the cold pool, and the other end of the confluence pipe and the other end of the one or more cooling pipes are used for communicating a heat exchanger of the charging device.

2. The charging gun of claim 1, wherein, The charging device further comprises two groups of adapters, each group of the adapters comprises one or more adapters, and the one or more adapters are arranged one-to-one with the one or more cooling pipes; Each of the adapters comprises a connection terminal and a terminal sleeve, the terminal sleeve is sleeved outside the connection terminal, there is a first flow channel between the inner surface of the terminal sleeve and the connection terminal for the flow of the liquid, and the first flow channel is in communication with the communication pipe and the corresponding cooling pipe; One end of the connection terminal is electrically connected to the one end of the power line in the corresponding cooling pipe, and the other end of the connection terminal is electrically connected to the corresponding power terminal.

3. The charging gun of claim 2, wherein, Both ends of the connection terminal extend to the outside of the terminal sleeve, and the one end of each of the cooling pipes is sleeved on the one end of the corresponding connection terminal; The inside of the connection terminal has a second flow channel, and the connection terminal further has a first opening and a second opening in communication with the second flow channel, the first opening is arranged on the surface of the part of the connection terminal located in the terminal sleeve and is in communication with the first flow channel, and the second opening is arranged on the outer surface of the one end of the connection terminal and is in communication with the corresponding cooling pipe.

4. The charging gun of claim 3, wherein, Each of the adapters further comprises a plurality of first sealing members, the plurality of first sealing members are sleeved outside the connection terminal, the plurality of first sealing members abut against the inner wall surface of the terminal sleeve, part of the first sealing members in the plurality of first sealing members are arranged at one end of the terminal sleeve, and another part of the first sealing members in the plurality of first sealing members are arranged at the other end of the terminal sleeve.

5. The charging gun of claim 3, wherein, Each of the adapters further comprises a second sealing member, the second sealing member is sleeved on the one end of the connection terminal, and the second sealing member abuts against the inner wall surface of the one end of the corresponding cooling pipe.

6. The charging gun of claim 3, wherein, The one end of the connecting terminal has an outwardly protruding annular protrusion, the one end of each cooling pipe is sleeved outside the corresponding annular protrusion, and the annular protrusion is in contact with the inner wall surface of the one end of the corresponding cooling pipe.

7. The charging gun according to claim 2 or 3, characterized in that, Each adapter further comprises a wiring protrusion fixed on the terminal sleeve, an inner space of the wiring protrusion is in communication with the first flow channel, the wiring protrusion has a wiring port facing away from the power terminal, and the wiring port is in communication with the communication pipe.

8. The charging gun of claim 1, wherein, Each of the positive power line and the negative power line comprises a plurality of power lines, each group of cooling pipes comprises a plurality of cooling pipes, and the charging device further comprises a shunt, the shunt comprises a first groove and a plurality of second grooves in communication. The communication pipe comprises a main pipe and a plurality of branch pipes, one end of the main pipe is in communication with the cold pool, the other end of the main pipe is in communication with the first groove, one end of each of the plurality of branch pipes is in communication with the plurality of second grooves respectively, and the other end of each of the plurality of branch pipes is in communication with the one end of the plurality of cooling pipes respectively.

9. A charging device, characterized by The charging gun comprises a power module, a heat exchanger, and the charging gun of any one of claims 1-8, the other end of the one or more power lines is connected to the power module, and the other end of the one or more cooling pipes and the other end of the communication pipe are in communication with the heat exchanger.

Images