Liquid cooling charging seat

Abstract

The utility model relates to the technical field of charging equipment, in particular to a liquid cooling charging seat, which comprises a seat body provided with a charging terminal and a charging cable, one end of the charging cable is fixed and conductively connected with the charging terminal, and a liquid cooling box is at least arranged at the joint of the charging terminal and the charging cable. The liquid cooling box is of a hollow structure, cooling liquid circulates in the liquid cooling box, the side face of the liquid cooling box is communicated with a liquid supply pipe and a liquid discharge pipe, one side face of the liquid cooling box is sunken inwards to form a cooling groove, and the shape of the cooling groove is matched with the shape of the end of the charging terminal, the shape of the end of the charging cable and the shape of the joint of the charging terminal and the charging cable. And at least one of the charging terminal and the charging cable is clamped in the cooling groove after the end part of the charging terminal and the end part of the charging cable are arranged in the cooling groove. The liquid cooling box has the advantages of being good in heat absorption and easy to disassemble and assemble at the same time.

Description

Technical Field

[0001] This utility model relates to the field of charging equipment technology, and more specifically, to a liquid-cooled charging stand. Background Technology

[0002] When electric vehicles are charging, the high-voltage, high-current operating environment causes charging equipment, such as charging docks, to generate significant heat, especially at the connection between the charging dock terminals and the charging cable. Current solutions often employ liquid cooling, which involves installing a cooling system at the connection between the charging dock terminals and the charging cable. This system could be a liquid-cooled box with supply and drainage pipes, where the flowing coolant dissipates the generated heat.

[0003] However, some existing liquid cooling boxes can only absorb heat from one side and cannot absorb heat from more sides of the charging base terminals and charging cable connections, thus limiting the cooling effect. While other liquid cooling boxes can surround or embed the charging base terminals and charging cable connections to achieve a greater heat absorption effect, this results in inconvenient installation and disassembly, which is not conducive to assembly and maintenance. Utility Model Content

[0004] This invention provides a liquid-cooled charging dock to solve the problem that existing technologies cannot simultaneously achieve good heat absorption and easy disassembly.

[0005] This utility model provides a liquid-cooled charging base, including a base body with a charging terminal installed and a charging cable with one end fixed and electrically connected to the charging terminal. At least at the connection point between the charging terminal and the charging cable, a liquid-cooled box is provided. The liquid-cooled box has a hollow structure and a coolant flows inside. A supply pipe and a drain pipe are connected to the side of the liquid-cooled box. One side of the liquid-cooled box is recessed inward to form a cooling groove. The shape of the cooling groove matches the shape of the ends of the charging terminal and the charging cable, as well as the shape of their connection point. After the ends of the charging terminal and the charging cable are inserted into the cooling groove, at least one of them is clamped in the cooling groove.

[0006] Optionally, the cooling tank includes a first part and a second part that are interconnected, the charging cable portion is clamped in the second part, and the end of the charging cable extends to the first part, the connection between the charging terminal and the charging cable is clamped in the first part, and the charging terminal and the charging cable are in thermally conductive contact with the cooling tank.

[0007] Optionally, the liquid cooling box is provided with a first liquid supply interface and a first liquid drain interface on the side facing the charging cable, and one end of the liquid supply pipe and the liquid drain pipe are respectively connected to the first liquid supply interface and the first liquid drain interface.

[0008] Optionally, the charging cable is provided with a liquid supply channel and a liquid drain channel inside, and the charging cable is provided with a second liquid supply interface and a second liquid drain interface near the liquid cooling box, which are connected to the liquid supply channel and the liquid drain channel, respectively. The other end of the liquid supply pipe and the liquid drain pipe are connected to the second liquid supply interface and the second liquid drain interface, respectively.

[0009] Optionally, the conductive part of the charging cable is a row structure, with the liquid supply channel and the liquid drain channel arranged in parallel within the row structure, and the end of the charging cable connected to the charging terminal is provided with a sealing structure for sealing the ports of the liquid supply channel and the liquid drain channel.

[0010] Optionally, the sealing structure includes a first sealing block and a second sealing block, which are respectively embedded and fixed in the ports of the liquid supply channel and the liquid discharge channel.

[0011] Optionally, the base is detachably connected to a cover at the end facing the charging cable, and the liquid cooling box, liquid supply pipe and liquid drain pipe are all housed in the cover, with the charging cable passing through the end of the cover away from the base.

[0012] Optionally, the charging terminal and the charging cable are fixedly connected by screws, and the liquid cooling box is provided with clearance holes for the screws to pass through.

[0013] Optionally, the charging cable is made of aluminum / aluminum alloy, the charging terminal is made of copper / copper alloy, and a copper / copper alloy adapter pad is welded to the side of the charging cable facing the charging terminal. The charging cable is electrically connected to the charging terminal through the adapter pad.

[0014] Optionally, the base is further provided with signal cables and / or grounding cables, and the liquid cooling box is provided with clearance grooves to avoid signal cables and / or grounding cables.

[0015] This utility model has the following beneficial effects:

[0016] In this invention, the connection between the charging terminal and the charging cable can be inserted into the cooling tank in a shape-fitting manner. After the ends of the charging terminal and the charging cable are inserted into the cooling tank, at least one of them is clamped in the cooling tank. Therefore, the liquid cooling box can be easily disassembled and assembled, and the cooling tank can conduct heat to the connection between the charging terminal and the charging cable from three sides, increasing the contact area and heat exchange effect. Thus, this invention can simultaneously meet the requirements of good heat absorption effect and easy disassembly and assembly.

[0017] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0019] Figure 1 A schematic diagram of the liquid-cooled charging dock;

[0020] Figure 2 This is a structural diagram of the main body of the cover;

[0021] Figure 3 This is a schematic diagram of the cap structure;

[0022] Figure 4 A schematic diagram showing the assembly relationship of the liquid cooling box, charging terminals, and charging cables from one perspective;

[0023] Figure 5 This is a schematic diagram showing the assembly relationship of the liquid cooling box, charging terminals, and charging cables from another perspective.

[0024] Figure 6 This is a schematic diagram of the liquid cooling box from one perspective.

[0025] Figure 7 This is a schematic diagram of the liquid cooling box from another perspective.

[0026] Figure 8 This is a cross-sectional view of the liquid cooling box.

[0027] Figure 9 This is a schematic diagram showing the assembly relationship of the charging terminals and charging cable (screws are not shown).

[0028] Figure 10 A schematic diagram showing the assembly relationship of the charging cable and screws from one perspective;

[0029] Figure 11 This is a schematic diagram showing the assembly relationship of the charging cable and screws from another perspective.

[0030] The diagram is marked as follows:

[0031] 1. Base; 11. Charging terminal; 111. Internal threaded hole; 12. Low-voltage cable;

[0032] 2. Charging cable; 21. Liquid supply channel; 22. Liquid drain channel; 23. Liquid supply pipe; 24. Liquid drain pipe; 25. First sealing block; 26. Second sealing block; 27. Through hole; 28. Second liquid supply interface; 29. ​​Second liquid drain interface;

[0033] 3. Cover; 31. Main structure; 311. Operating window; 32. End cover structure; 33. Cover; 331. Buckle;

[0034] 4. Liquid cooling tank; 41. Clearance hole; 42. Clearance groove; 43. Cooling tank; 431. First part; 432. Second part; 44. First liquid supply port; 45. First liquid drain port;

[0035] 5. Screws;

[0036] 6. Adapter gasket. Detailed Implementation

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0038] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0039] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0040] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0041] See Figure 1-11 An embodiment of this utility model provides a liquid-cooled charging base, including a base body 1 with a charging terminal 11 installed and a charging cable 2 with one end fixed and electrically connected to the charging terminal 11. A liquid-cooled box 4 is provided at least at the connection between the charging terminal 11 and the charging cable 2. The liquid-cooled box 4 has a hollow structure and coolant flows inside. A liquid supply pipe 23 and a liquid drain pipe 24 are connected to the side of the liquid-cooled box 4. One side of the liquid-cooled box 4 is recessed inward to form a cooling groove 43. The two ends of the cooling groove 43 pass through the liquid-cooled box 4 so that the charging terminal 11 and the charging cable 2 can pass through. The shape of the cooling groove 43 matches the shape of the ends of the charging terminal 11 and the charging cable 2 and the connection between them. After the ends of the charging terminal 11 and the charging cable 2 are inserted into the cooling groove 43, at least one of them is clamped in the cooling groove 43.

[0042] The connection between the charging terminal 11 and the charging cable 2 can be inserted into the cooling tank 43 in a shape-fitting manner. After the ends of the charging terminal 11 and the charging cable 2 are inserted into the cooling tank 43, at least one of them is clamped in the cooling tank 43. Therefore, the liquid cooling box 4 can be easily disassembled and assembled, and the cooling tank 43 can also surround the connection between the charging terminal 11 and the charging cable 2 from three sides to conduct heat, increasing the contact area and heat exchange effect. Thus, this solution can simultaneously meet the requirements of good heat absorption effect and easy disassembly and assembly.

[0043] Specifically, in this embodiment, the charging cable 2 has a flat ribbon structure. Considering the assembly relationship between the charging cable 2, the charging terminal 11, and the base 1, the end of the charging cable 2 is inserted into the cooling groove 43 and clamped within it. The connection between the charging terminal 11 and the charging cable 2 is also housed within the cooling groove 43 and fits against the bottom and walls of the cooling groove 43. Further description, such as... Figure 6-8 As shown, the cooling tank 43 includes a first part 431 and a second part 432 that are interconnected. A portion of the charging cable 2 is clamped in the second part 432, and the end of the charging cable 2 extends to the first part 431. The connection point between the charging terminal 11 and the charging cable 2 is clamped in the first part 431, and the charging terminal 11 and the charging cable are in thermally conductive contact with the cooling tank 43. The thermally conductive contact between the portion of the charging cable 2 located in the second part 432 and the connection point between the charging terminal 11 and the charging cable 2 and the cooling tank 43 occurs at the bottom and walls of the cooling tank 43, meaning they are in three-sided thermally conductive contact.

[0044] Obviously, referring to the structure described above where part of the charging cable 2 is held by the cooling groove 43, in other embodiments, the charging terminal can also be partially held in the cooling groove. Those skilled in the art can easily and without objection obtain this setting based on the description, so it will not be described in detail here.

[0045] Specifically, considering the ease of assembly and construction of liquid flow channels, such as Figure 6 As shown, in this embodiment, the liquid cooling box 4 is provided with a first liquid supply interface 44 and a first liquid drain interface 45 on the side facing the charging cable 2. One end of the liquid supply pipe 23 and the liquid drain pipe 24 are respectively connected to the first liquid supply interface 44 and the first liquid drain interface 45. More specifically, the liquid supply pipe 23 and the liquid drain pipe 24 are located on two opposite sides of the charging cable 2 to facilitate liquid circulation and return.

[0046] Specifically, considering saving components, reducing space occupation, and improving the integration of the liquid-cooled charging dock, such as Figure 1 , 4 As shown in Figures 9, 10, and 11, in this embodiment, the charging cable 2 is provided with a liquid supply channel 21 and a liquid drain channel 22 inside. The charging cable 2 is provided with a second liquid supply interface 28 and a second liquid drain interface 29 near the liquid cooling box 4, which are connected to the liquid supply channel 21 and the liquid drain channel 22, respectively. The other ends of the liquid supply pipe 23 and the liquid drain pipe 24 are connected to the second liquid supply interface 28 and the second liquid drain interface 29, respectively.

[0047] In this embodiment, considering the high-voltage, high-current charging environment, the charging cable 2 adopts a rigid cable, such as... Figure 1 , 4As shown in Figures 5, 9, 10, and 11, in this embodiment, the conductive part of the charging cable 2 is a row structure, and the liquid supply channel 21 and the liquid drain channel 22 are arranged in parallel within the row structure. One end of the charging cable 2 connected to the charging terminal 11 is provided with a sealing structure for sealing the ports of the liquid supply channel 21 and the liquid drain channel 22.

[0048] Specifically, in order to improve sealing performance, such as Figure 5 , 10 As shown, in this embodiment, the sealing structure includes a first sealing block 25 and a second sealing block 26 respectively embedded and fixed in the ports of the liquid supply channel 21 and the liquid drain channel 22. The first sealing block 25 and the second sealing block 26 can be made of the same material as the conductive part of the charging cable 2, or they can be made of copper / copper alloy. The first sealing block 25 and the second sealing block 26 can be fixed and sealed in the ports of the liquid supply channel 21 and the liquid drain channel 22 by welding.

[0049] To protect liquid cooling tank 4, such as Figure 1 , 2 As shown, in this embodiment, the end of the base 1 facing the charging cable 2 is detachably connected to the cover 3 via a snap-fit ​​structure. The liquid cooling tank 4, the liquid supply pipe 23, and the liquid drain pipe 24 are all housed within the cover 3. The charging cable 2 exits from the end of the cover 3 away from the base 1. In this embodiment, the cover 3 comprises two bolted parts to facilitate the assembly and disassembly of components such as the liquid cooling tank 4 and the charging cable 2. In other embodiments, the cover 3 can also be connected to the base 1 via a detachable connection method with equivalent effect, such as a bolted structure.

[0050] Considering the ease of connection and disassembly, such as Figure 4 , 6 As shown in Figures 7, 9, 10, and 11, in this embodiment, the charging terminal 11 and the charging cable 2 are fixedly connected by screws 5. The liquid cooling box 4 is provided with a clearance hole 41 for the screws 5 to pass through. Specifically, the end of the charging terminal 11 can be located inside the charging cable 2 and is provided with an internal threaded hole 111. The end of the charging cable 2 is provided with a through hole 27 corresponding to the internal threaded hole 111. The end of the screw 5 passes through the through hole 27 and is screwed into the internal threaded hole 111 to fix the charging terminal 11 and the end of the charging cable 2.

[0051] Additionally, to facilitate the connection and disconnection of the charging terminal 11 and the charging cable 2, such as Figure 1 , 2 As shown, in this embodiment, of the two parts of the cover 3, the part closer to the base 1 is larger and constitutes the main structure 31, and the other part closer to the charging cable 2 is smaller and constitutes the end cap structure 32. The main structure 31 is provided with an operation window 311 with a corresponding clearance hole 41, and a cover 33 is detachably connected to the operation window 311 by a buckle 331.

[0052] In this liquid-cooled charging dock, the charging cable 2 is made of aluminum / aluminum alloy, and the charging terminal 11 is made of copper / copper alloy. In practice, the choice of these materials can be determined based on specific conductivity requirements. To avoid electrochemical corrosion at the copper-aluminum contact area, such as... Figure 11 As shown, in this embodiment, a copper / copper alloy adapter pad 6 is welded and fixed to the side of the charging cable 2 facing the charging terminal 11, and the charging cable 2 is electrically connected to the charging terminal 11 through the adapter pad 6.

[0053] like Figure 1 , 4 As shown in Figures 6 and 7, the base 1 is also provided with low-voltage cables 12 such as signal cables and / or grounding cables. In order to prevent the liquid cooling box 4 from obstructing the laying of the low-voltage cables 12 such as signal cables and / or grounding cables, in this embodiment, the liquid cooling box 4 is provided with a clearance groove 42 to avoid signal cables and / or grounding cables.

[0054] The liquid cooling box 4 described above is made of an insulating and thermally conductive material. In this embodiment, the liquid cooling box 4 is made of a highly thermally conductive ceramic material.

[0055] like Figure 1 and Figure 4-9 As shown, in this embodiment, two sets of charging terminals 11 and charging cables 2 are provided. The liquid cooling box 4 has two cooling tanks 43 and is M-shaped. The hollow structure inside the liquid cooling box 4 is provided with two sets of cooling tanks 43, which are not connected to each other.

[0056] For specific assembly, please refer to the following illustrative steps:

[0057] First, the other part of the cover 3 near the charging cable 2, namely the tail cover structure, is pre-installed on the charging cable 2. Then, the part of the cover 3 with the operation window 311, namely the main structure 31, is connected to the base 1.

[0058] The second step is to insert the end of the charging cable 2 into the cooling tank 43 of the liquid cooling box 4 from the opening of the cooling tank 43, and correctly connect the liquid supply pipe 23 and the liquid drain pipe 24.

[0059] The third step is to insert the end of the charging cable 2 and the liquid cooling box 4 into the main structure 31 of the cover 3, until the end of the charging terminal 11 enters the cooling tank 43 from the corresponding end of the cooling tank 43 and connects with the end of the charging cable 2. Then, the operating screw 5 is inserted into the operating window 311 and the clearance hole 41 in sequence, until the end of the screw 5 passes through the through hole 27 at the end of the charging cable 2 and is screwed into the internal thread hole 111 at the end of the charging terminal 11. At this time, the charging terminal 11 and the end of the charging cable 2 are fixedly connected and can conduct electricity. Then, the cover 33 is connected to the operating window 311 to seal the operating window 311.

[0060] The fourth step is to push the other part of the cover 3 pre-attached to the charging cable 2, namely the tail cover structure, close to the part already connected to the base 1, namely the main body connector, until the two can be bolted together and assembled into a complete cover 3. At this point, the assembly of the liquid cooling related structure is completed. The coolant can flow into the hollow structure from the liquid supply channel 21 and the liquid supply pipe 23, and after heat exchange, it flows back from the drain pipe 24 and the drain channel 22.

[0061] As can be understood from the above description, in other embodiments, the ends of the charging terminal and the charging cable can also be welded together. Then, the welded connection is inserted into the cooling tank of the liquid cooling box from the slot of the cooling tank. The ends of the charging terminal and the charging cable are simultaneously inserted into the cooling tank from the slot and exit from both ends of the cooling tank. At this time, a smaller part of the cover near the base body forms an end cap structure, which can be pre-connected to the base body. Another smaller part near the charging cable forms the main body structure, which can be pre-attached to the charging cable. After the liquid cooling box is installed, the main body structure is pushed close to the end cap structure until the liquid cooling box is housed in the main body structure. The main body structure can be bolted to the end cap structure to form a complete cover. This solution can be easily and without objection obtained by those skilled in the art based on the description and the structure of the above embodiments, so no further illustrations or detailed descriptions are shown.

[0062] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A liquid-cooled charging base, comprising a base body with charging terminals mounted thereon and a charging cable with one end fixed and electrically connected to the charging terminals, wherein a liquid-cooled box is provided at least at the connection point between the charging terminals and the charging cable, the liquid-cooled box having a hollow structure and containing circulating coolant, and a supply pipe and a drain pipe connected to the side of the liquid-cooled box, characterized in that, The liquid cooling box has an inwardly recessed cooling groove on one side. The shape of the cooling groove matches the shape of the end of the charging terminal and the charging cable, as well as the connection between them. After the end of the charging terminal and the charging cable is inserted into the cooling groove, at least one of them is clamped in the cooling groove.

2. The liquid-cooled charging dock as described in claim 1, characterized in that, The cooling tank includes a first part and a second part that are interconnected. The charging cable portion is clamped in the second part, and the end of the charging cable extends into the first part. The connection between the charging terminal and the charging cable is clamped in the first part, and the charging terminal and the charging cable are in thermally conductive contact with the cooling tank.

3. A liquid-cooled charging dock as described in claim 1, characterized in that, The liquid cooling box is provided with a first liquid supply interface and a first liquid drain interface on the side facing the charging cable, and one end of the liquid supply pipe and the liquid drain pipe are respectively connected to the first liquid supply interface and the first liquid drain interface.

4. A liquid-cooled charging dock as described in claim 3, characterized in that, The charging cable has a liquid supply channel and a liquid drain channel inside. The charging cable is provided with a second liquid supply interface and a second liquid drain interface near the liquid cooling box, which are connected to the liquid supply channel and the liquid drain channel, respectively. The other end of the liquid supply pipe and the liquid drain pipe are connected to the second liquid supply interface and the second liquid drain interface, respectively.

5. A liquid-cooled charging dock as described in claim 4, characterized in that, The conductive part of the charging cable has a row structure, and the liquid supply channel and the liquid drain channel are arranged in parallel within the row structure. The end of the charging cable connected to the charging terminal is provided with a sealing structure for sealing the ports of the liquid supply channel and the liquid drain channel.

6. A liquid-cooled charging dock as described in claim 5, characterized in that, The sealing structure includes a first sealing block and a second sealing block, which are respectively embedded and fixed in the ports of the liquid supply channel and the liquid discharge channel.

7. A liquid-cooled charging dock as described in claim 4, characterized in that, The base is detachably connected to a cover at the end facing the charging cable. The liquid cooling box, the liquid supply pipe, and the liquid drain pipe are all housed within the cover. The charging cable exits from the end of the cover away from the base.

8. A liquid-cooled charging dock as described in claim 1, characterized in that, The charging terminal and the charging cable are fixedly connected by screws, and the liquid cooling box is provided with clearance holes for the screws to pass through.

9. A liquid-cooled charging dock as described in claim 8, characterized in that, The charging cable is made of aluminum / aluminum alloy, the charging terminal is made of copper / copper alloy, and a copper / copper alloy adapter pad is welded and fixed to the side of the charging cable facing the charging terminal. The charging cable is electrically connected to the charging terminal through the adapter pad.

10. A liquid-cooled charging dock as described in claim 1, characterized in that, The base is also provided with signal cables and / or grounding cables, and the liquid cooling box is provided with clearance grooves to avoid signal cables and / or grounding cables.

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