Electro-hydraulic isolation connection device and power supply apparatus having same

Abstract

An electro-hydraulic isolation connection device and a power supply apparatus having same. The electro-hydraulic isolation connection device (10) is used for a power supply apparatus (100). The power supply apparatus (100) has a fluid path (301), an electric circuit (403) and a cable (2), wherein the fluid path (301) is isolated from the electric circuit (403), and the electro-hydraulic isolation connection device (10) is configured to connect the fluid path (301) and the electric circuit (403) to the cable (2).

Description

Electrohydraulic isolation connection device and power supply equipment having it

[0001] Cross-reference of related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202411988039.9, filed on December 27, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of power supply equipment technology, and in particular to a liquid-electric isolation connection device and a power supply equipment having the same. Background Technology

[0004] With the rapid development of electric vehicles, the safety performance of their power supply equipment is receiving increasing attention. In existing technologies, the liquid circuit and electrical circuit of the power supply equipment are arranged in the same chamber. If the liquid circuit leaks, it may cause electrical leakage, resulting in short circuits and damage to the internal modules of the power supply equipment, posing a safety hazard. Summary of the Invention

[0005] This application provides a liquid-electric isolation connection device and a power supply device having the same, aiming to at least solve one of the technical problems existing in the prior art.

[0006] To achieve the above objectives, a first aspect of this application provides a liquid-electric isolation connection device for a power supply device, the power supply device having a liquid path, a circuit, and a cable, the liquid path and the circuit being isolated from each other, and the liquid-electric isolation connection device being used to connect the liquid path and the circuit to the cable.

[0007] According to the embodiment of this application, the liquid-electric isolation connection device can connect the isolated liquid circuit and circuit on the power supply equipment to the cable, ensuring the isolation between the liquid circuit and the circuit. This avoids the risk of leakage or short circuit in the circuit and internal components of the power supply equipment when the liquid circuit of the power supply equipment leaks coolant, thereby improving the safety performance of the liquid-electric isolation connection device.

[0008] In addition, the electro-hydraulic isolation connection device according to this application may also have the following additional technical features:

[0009] In some embodiments, the electrohydraulic isolation connection device includes: a housing having a receiving cavity and a wire passage hole, a first hole and a second hole communicating with the receiving cavity, the liquid circuit being adapted to be connected to the cable through the first hole, the circuit being adapted to be connected to the cable through the second hole, and the cable being adapted to pass through the receiving cavity from the wire passage hole.

[0010] In some embodiments, the first hole and the second hole are located on different sides of the receiving cavity.

[0011] In some embodiments, the cable includes a conductor assembly and a cooling pipe assembly, the conductor assembly being adapted to connect to the circuit through the second hole, and the cooling pipe assembly being adapted to connect to the liquid circuit through the first hole.

[0012] In some embodiments, the conductor group includes a positive conductor and a negative conductor, and the ends of the positive conductor and the negative conductor facing the second hole are respectively connected to a positive copper busbar and a negative copper busbar, which are adapted to be electrically connected to the circuit.

[0013] In some embodiments, the positive and negative copper busbars extend from the second hole into the receiving cavity, and the positive and negative copper busbars are movable relative to the housing.

[0014] In some embodiments, a cooling pipe connector is provided at the first hole, one end of which is connected to the cooling pipe assembly and the other end is connected to the liquid passage.

[0015] In some embodiments, the cooling pipe assembly includes an inlet cooling pipe and an outlet cooling pipe, and there are multiple cooling pipe connectors, each including an inlet pipe connector and an outlet pipe connector. One end of the inlet pipe connector is connected to the inlet cooling pipe, and the other end is connected to the liquid passage. One end of the outlet pipe connector is connected to the outlet cooling pipe, and the other end is connected to the liquid passage.

[0016] In some embodiments, there are multiple inlet cooling pipes, and the inlet pipe connector has multiple first interfaces that correspond one-to-one with and communicate with the multiple inlet cooling pipes; and / or, there are multiple outlet cooling pipes, and the outlet pipe connector has multiple second interfaces that correspond one-to-one with and communicate with the multiple outlet cooling pipes.

[0017] In some embodiments, the cooling pipe connector includes: an inner connector assembly that passes through the first hole, with one end of the inner connector assembly facing the interior of the receiving cavity communicating with the cooling pipe assembly; and an outer connector that is connected to the end of the inner connector assembly facing away from the cooling pipe assembly and is used to communicate with the liquid passage.

[0018] In some embodiments, the electrohydraulic isolation connection device further includes a limiting member disposed on the housing for restricting the movement of the inner connector assembly within the receiving cavity.

[0019] In some embodiments, the limiting member is a fastening plate located on the side of the inner connector assembly opposite to the outer connector and connected to the housing, for limiting the movement of the inner connector assembly in a direction opposite to the outer connector.

[0020] In some embodiments, the inner connector assembly includes: a connecting pipe passing through the first hole, one end of the connecting pipe communicating with the outer connector; and an inner connector connected to the end of the connecting pipe opposite to the outer connector, for communicating with the cooling pipe assembly.

[0021] In some embodiments, the cross-section of the inner connector is square along the axial direction of the first hole, and the receiving cavity has a limiting rib that fits against the inner connector to restrict the movement of the inner connector in a direction perpendicular to the axis of the first hole.

[0022] In some embodiments, a first seal is provided between the cooling pipe joint and the housing.

[0023] In some embodiments, the cooling pipe connector passes through the first hole, and the first sealing element is provided between the cooling pipe connector and the inner wall of the first hole.

[0024] In some embodiments, the cooling pipe connector and the housing are an integral part.

[0025] In some embodiments, a second seal is provided between the cable and the housing.

[0026] In some embodiments, the cable passes through the cable hole, and a second sealing element is provided between the cable and the inner wall of the cable hole.

[0027] In some embodiments, a first fastening block is provided on the inner wall of the receiving cavity, and the first fastening block has a first clearance groove.

[0028] In some embodiments, a second fastening block is provided in the receiving cavity. The second fastening block is located on the side of the first fastening block that has the first clearance groove and is connected to the first fastening block. The second fastening block has a second clearance groove, which is disposed opposite to the first clearance groove, for restricting the movement of the cable in the receiving cavity.

[0029] In some embodiments, the second fastening block is detachably connected to the first fastening block.

[0030] In some embodiments, a sealing ring is provided on one end face of the housing with the second hole, and the sealing ring is arranged around the second hole.

[0031] In some embodiments, the side end face of the housing with the second hole has a plurality of mounting holes, the plurality of mounting holes being located radially outside the second hole, and the plurality of mounting holes being spaced apart along the circumferential direction of the second hole.

[0032] According to a second aspect of this application, an embodiment of this application also provides a power supply device, comprising: a housing having a through hole; a power distribution module disposed within the housing; a heat exchange system disposed within the housing and isolated from the power distribution module; and the aforementioned liquid-electric isolation connection device disposed at the through hole for connecting the liquid circuit of the heat exchange system and the circuit of the power distribution module to the cable.

[0033] In addition, the power supply equipment according to this application may also have the following additional technical features:

[0034] In some embodiments, the electrohydraulic isolation connection device is disposed on the outer wall of the housing and is disposed opposite to the through hole.

[0035] In some embodiments, the fluid passage is located on the outside of the housing.

[0036] In some embodiments, the liquid path includes an inlet heat exchanger tube and an outlet heat exchanger tube, and the inlet heat exchanger tube and the outlet heat exchanger tube are connected to the cable.

[0037] In some embodiments, the outer casing has an electrical compartment and a heat exchange compartment, which are arranged vertically. The power distribution module is located in the electrical compartment, and the heat exchange system is located in the heat exchange compartment.

[0038] In some embodiments, the power supply device further includes a charging gun, wherein one end of the cable opposite to the electrohydraulic isolation connection is connected to the charging gun.

[0039] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0040] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0041] Figure 1 is a perspective view of a power supply device according to an embodiment of this application from one angle;

[0042] Figure 2 is a perspective view of the power supply device according to an embodiment of this application from another angle;

[0043] Figure 3 is a perspective view of a hydraulic-electric isolation connection device according to an embodiment of this application;

[0044] Figure 4 is an exploded view of a hydraulic-electric isolation connection device according to an embodiment of this application;

[0045] Figure 5 is a structural schematic diagram of a power supply device according to an embodiment of this application.

[0046] Reference numerals: 100, Power supply equipment; 10, Electro-hydraulic isolation connection device; 1, Housing; 11, Receiving cavity; 12, Cable hole; 121, Second seal; 13, First hole; 131, Cooling pipe connector; 132, Liquid inlet pipe connector; 133, Liquid outlet pipe connector; 134, Connecting pipe; 135, Inner connector; 136, Outer connector; 137, Inner connector assembly; 14, Second hole; 151, First fastening block; 152, Second fastening block; 16, Mounting hole; 2, Cable; 21, Wire assembly; 211, Positive wire; 212, Negative wire; 213, Positive copper busbar; 214, Negative copper busbar; 22, Cooling pipe assembly; 221, Liquid inlet cooling pipe; 222, Liquid outlet cooling pipe; 3, Sealing ring; 4, Fastening plate; 20, Outer shell; 201, Electrical compartment; 202, Heat exchange compartment; 30. Heat exchange system; 301. Liquid circuit; 302. Liquid inlet heat exchange tube; 303. Liquid outlet heat exchange tube; 40. Power distribution module; 401. AC-DC power module; 402. DC-DC power module; 403. Circuit; 50. Charging gun. Detailed Implementation

[0047] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0048] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] The following description, with reference to the accompanying drawings, describes a hydraulic-electric isolation connection device 10 according to an embodiment of this application.

[0052] As shown in Figure 1, the liquid-electric isolation connection device 10 according to an embodiment of this application is used for a power supply device 100. The power supply device 100 has a liquid path 301, a circuit 403 and a cable 2. The liquid path 301 and the circuit 403 are isolated. The liquid-electric isolation connection device 10 is used to connect the liquid path 301 and the circuit 403 to the cable 2 to supply power to the charging gun 50.

[0053] According to the embodiment of this application, the liquid-electric isolation connection device 10 can connect the liquid circuit 301 and the circuit 403 isolated on the power supply equipment 100 to the cable 2. While ensuring normal power supply to the charging gun 50, it can ensure the isolation of the liquid circuit 301 and the circuit 403, thereby avoiding the risk of leakage or short circuit of the circuit 403 and the internal components of the power supply equipment 100 when the liquid circuit 301 of the power supply equipment 100 leaks coolant, thus improving the safety performance of the liquid-electric isolation connection device 10.

[0054] In some embodiments of this application, as shown in Figures 3 and 4, the electrohydraulic isolation connection device 10 includes a housing 1. The housing 1 can protect the internal structure of the electrohydraulic isolation connection device 10, prevent the internal structure of the electrohydraulic isolation connection device 10 from being exposed and damaged, extend the service life of the electrohydraulic isolation connection device 10, and has a better appearance.

[0055] In the embodiments of this application, referring to Figures 3 and 4, the housing 1 has a receiving cavity 11 and a wire passage hole 12, a first hole 13, and a second hole 14 communicating with the receiving cavity 11. The liquid path 301 is connected to the cable 2 through the first hole 13, and the circuit 403 is connected to the cable 2 through the second hole 14. The cable 2 is adapted to pass through the receiving cavity 11 from the wire passage hole 12. The arrangement of the wire passage hole 12, the first hole 13, and the second hole 14 can respectively position the cable 2, the liquid path 301, and the circuit 403, avoiding the situation where the liquid path 301 and the circuit 403 are connected to the cable 2 through the same hole, ensuring the spatial isolation of the liquid path 301 and the circuit 403 as much as possible, avoiding the risk of leakage or short circuit of the circuit 403 due to coolant leakage at the connection position of the liquid path 301 and the cable 2, thereby further improving the safety performance of the liquid-electric isolation connection device 10.

[0056] In some embodiments of this application, referring to Figure 3, the first hole 13 and the second hole 14 are located on different sides of the receiving cavity 11, which can isolate the liquid path 301 and the circuit 403 on different sides of the housing 1, further realizing spatial isolation of the liquid path 301 and the circuit 403. On the one hand, it can facilitate the installation and after-sales service of the liquid-electric isolation connection device 10, and facilitate the connection between the liquid path 301 and the circuit 403 and the liquid-electric isolation connection device 10. On the other hand, it can prevent the cooling circuit of the power supply equipment 100 from leaking coolant due to high pressure of the liquid path 301, aging of the pipeline, after-sales maintenance, etc. during the use or after-sales service of the liquid-electric isolation connection device 10, reduce the risk of leakage or short circuit of the circuit 403 and the internal components of the power supply equipment 100, and improve the safety performance of the liquid-electric isolation connection device 10.

[0057] In the embodiments of this application, referring to Figures 3 and 4, the cable 2 includes a conductor group 21 and a cooling pipe group 22. The conductor group 21 is adapted to be connected to the circuit 403 through the second hole 14, and the cooling pipe group 22 is adapted to be connected to the liquid circuit 301 through the first hole 13.

[0058] It should be noted that by providing a wire passage hole 12, a first hole 13, and a second hole 14 on the housing 1, after the cable 2 extends into the receiving cavity 11 through the wire passage hole 12, the wire assembly 21 can extend towards the second hole 14 and connect to the circuit 403, and the cooling pipe assembly 22 can extend towards the first hole 13 and connect to the liquid passage 301. This allows the wire assembly 21 and the cooling pipe assembly 22 to be separated within the housing 1, achieving spatial isolation between them. On the one hand, this facilitates the installation and after-sales service of the hydraulic-electric isolation connection device 10, and on the other hand... Electrically connecting the conductor group 21 to the power distribution module 40 of the power supply equipment 100 facilitates the connection of the cooling pipe group 22 to the heat exchange system 30, solving the problem of limited space in the liquid-electric isolation connection device 10. On the other hand, it can prevent coolant leakage in the cooling circuit of the power supply equipment 100 due to high liquid pressure, pipe aging, after-sales maintenance, etc. during the use or after-sales service of the liquid-electric isolation connection device 10, reducing the risk of leakage or short circuit in the conductor group 21 and the internal components of the power supply equipment 100, and improving the safety performance of the liquid-electric isolation connection device 10.

[0059] It should be noted that the coolant in the cooling pipe assembly 22 is conductive propylene glycol, which can achieve high-power power supply and accelerate the heat dissipation of the charging gun 50. In some other embodiments of this application, the coolant in the cooling pipe assembly 22 can also be a coolant with insulating properties. Although there is no need for liquid-electric isolation with insulating coolant, the liquid-electric isolation connection device 10 of this application can still facilitate the installation and maintenance of the liquid-electric isolation connection device 10.

[0060] In a specific example, referring to Figures 3 and 4, the wire hole 12, the first hole 13, and the second hole 14 are located on the first side, the second side, and the third side of the receiving cavity 11, respectively. The first side and the second side are opposite sides of the receiving cavity 11, and the third side is the side of the receiving cavity 11 facing the power distribution module 40. This allows the cooling pipe assembly 22 to extend in a generally straight direction within the receiving cavity 11, minimizing the bending of the cooling pipe assembly 22, relatively extending the service life of the cooling pipe assembly 22, and reducing the probability of coolant leakage.

[0061] In some embodiments of this application, referring to Figure 3, the conductor group 21 includes a positive conductor 211 and a negative conductor 212. There are one or more positive conductors 211 and one or more negative conductors 212. The ends of the positive conductors 211 and 212 facing the second hole 14 are respectively connected to a positive copper busbar 213 and a negative copper busbar 214. The positive copper busbar 213 and the negative copper busbar 214 are suitable for electrical connection with the circuit 403, thereby forming a complete circuit and ensuring the normal power supply of the power supply equipment 100.

[0062] In some embodiments of this application, referring to Figure 3, the positive copper busbar 213 and the negative copper busbar 214 extend from the receiving cavity 11 through the second hole 14. The positive copper busbar 213 and the negative copper busbar 214 are movable relative to the housing 1. Because the positive wire 211 and the negative wire 212 are flexible and malleable, they are easy to bend and shape. The positive copper busbar 213 and the negative copper busbar 214 are respectively connected to the positive wire 211 and the negative wire 212, and neither the positive copper busbar 213 nor the negative copper busbar 214 is connected to the housing 1. This allows the positive copper busbar 213 and the negative copper busbar 214 to be floated, achieving a flexible connection between the positive copper busbar 213 and the negative copper busbar 214 and the copper busbar of the power distribution module 40. This ensures the conduction of electrical energy, avoids rigid connections between copper busbars, reduces connection stress, and ensures reliable connection between the positive copper busbar 213 and the negative copper busbar 214 and the copper busbar of the power distribution module 40, which is beneficial to charging safety.

[0063] In some embodiments of this application, referring to Figures 3 and 4, a cooling pipe connector 131 is provided at the first hole 13. One end of the cooling pipe connector 131 is connected to the cooling pipe assembly 22, and the other end is connected to the liquid passage 301. By setting the cooling pipe connector 131, the cooling pipe assembly 22 in the receiving cavity 11 can be connected to the liquid passage 301, realizing the indirect connection between the cooling pipe assembly 22 and the heat exchange system 30 outside the liquid-electric isolation connection device 10. This ensures the smooth flow of the coolant, effectively absorbs and removes the heat generated by the large current transmission. Furthermore, by setting the cooling pipe connector 131 at the first hole 13, the connection point between the cooling pipe assembly 22 and the heat exchange system 30 can be set outside the receiving cavity 11. This effectively avoids leakage or bursting of the liquid pipe due to high pressure in the liquid passage, pipe aging, after-sales maintenance, etc., reducing the risk of leakage or short circuit in the components inside the conductor assembly 21 and the power supply equipment 100, and improving the safety performance of the liquid-electric isolation connection device 10.

[0064] In the embodiments of this application, referring to Figure 3, the cooling pipe assembly 22 includes an inlet cooling pipe 221 and an outlet cooling pipe 222. There are one or more inlet cooling pipes 221 and one or more outlet cooling pipes 222. There are multiple cooling pipe connectors 131, each including an inlet pipe connector 132 and an outlet pipe connector 133. One end of the inlet pipe connector 132 is connected to the inlet cooling pipe 221, and the other end is connected to the liquid passage 301. One end of the outlet pipe connector 133 is connected to the outlet cooling pipe 222, and the other end is connected to the liquid passage 301, thereby forming a complete coolant circuit and realizing coolant circulation.

[0065] Understandably, after the coolant flows out of the heat exchange system 30, it first enters the inlet pipe joint 132 through the liquid passage 301, and then flows from the inlet pipe joint 132 to the inlet cooling pipe 221. The coolant in the inlet cooling pipe 221 exchanges heat with the wire assembly 21 to reduce the heat of the wire assembly 21. After the heat exchange, the coolant flows from the charging gun 50 to the outlet cooling pipe 222, and the coolant in the outlet cooling pipe 222 flows back to the liquid passage 301 through the outlet pipe joint 133.

[0066] In the embodiments of this application, referring to Figure 3, there are multiple liquid inlet cooling pipes 221, and the liquid inlet pipe connector 132 has multiple first interfaces that correspond one-to-one with and are connected to the multiple liquid inlet cooling pipes 221. The arrangement of multiple liquid inlet cooling pipes 221 can increase the flow rate of the coolant, expand the heat dissipation area of ​​the cooling pipe assembly 22, increase the heat exchange area between the coolant and the wire assembly 21, improve the heat dissipation efficiency of the cooling pipe assembly 22, prevent the cable 2 from overheating, and ensure the safety of the power supply equipment 100.

[0067] In the embodiments of this application, referring to Figure 3, there are multiple outlet cooling pipes 222, and the outlet pipe connector 133 has multiple second interfaces that correspond one-to-one with and are connected to the multiple outlet cooling pipes 222. The arrangement of multiple outlet cooling pipes 222 can increase the flow rate of coolant, expand the heat dissipation area of ​​the cooling pipe group 22, increase the heat exchange area between coolant and wire group 21, improve the heat dissipation efficiency of cooling pipe group 22, prevent the cable 2 from overheating, and ensure the safety of power supply equipment 100.

[0068] In a specific example, referring to Figure 3, both the inlet cooling pipe 221 and the outlet cooling pipe 222 include two pipes. The first interface corresponds to the two inlet cooling pipes 221, and the second interface corresponds to the two outlet cooling pipes 222. After the coolant flows out of the liquid passage 301, it first flows into the inlet pipe connector 132. Then, the coolant in the inlet pipe connector 132 is divided into two streams, which flow from the two first interfaces to the two inlet cooling pipes 221 respectively. The coolant in the inlet cooling pipes 221 exchanges heat with the wire assembly 21 to reduce the heat of the wire assembly 21. After the heat exchange, the coolant flows into the charging gun 50 to the two outlet cooling pipes 222. The coolant in the two outlet cooling pipes 222 is collected in the outlet pipe connector 133 by the two second interfaces respectively, and finally returns to the liquid passage 301.

[0069] In the embodiments of this application, referring to Figure 4, the cooling pipe connector 131 includes an inner connector assembly 137 and an outer connector 136. The inner connector assembly 137 is inserted into the first hole 13. One end of the inner connector assembly 137 facing the inside of the receiving cavity 11 is connected to the cooling pipe assembly 22. The outer connector 136 is connected to the end of the inner connector assembly 137 away from the cooling pipe assembly 22 and is used to connect to the liquid passage 301. Since the inner connector assembly 137 and the outer connector 136 are located on the inner and outer sides of the housing 1 respectively, it is convenient for the cooling pipe connector 131 to connect the cooling pipe assembly 22 and the liquid passage 301, thus meeting the installation requirements of the cooling pipe assembly 22 and the liquid passage 301.

[0070] In the embodiments of this application, as shown in Figures 3 and 4, the electrohydraulic isolation connection device 10 further includes a limiting member disposed on the housing 1, which is used to restrict the movement of the inner connector assembly 137 within the receiving cavity 11, thereby enabling the inner connector assembly 137 to be positioned, ensuring the fixation of the cooling pipe connector 131, ensuring the communication between the cooling pipe assembly 22 and the cooling pipe connector 131, and preventing the connection between the cooling pipe assembly 22 and the cooling pipe connector 131 from loosening and leaking liquid.

[0071] In the embodiments of this application, referring to Figures 3 and 4, the limiting member is a fastening plate 4. The fastening plate 4 is located on the side of the inner connector assembly 137 away from the outer connector 136 and is connected to the housing 1. It is used to restrict the movement of the inner connector assembly 137 in the direction away from the outer connector 136, thereby positioning the inner connector assembly 137, ensuring the fixation of the cooling pipe connector 131, ensuring the communication between the cooling pipe assembly 22 and the cooling pipe connector 131, and preventing the connection between the cooling pipe assembly 22 and the cooling pipe connector 131 from loosening and leaking liquid.

[0072] Specifically, referring to Figure 4, the fastening plate 4 is connected to the housing 1 by fasteners, which can ensure the reliability and stability of the connection between the fastening plate 4 and the housing 1, prevent the fastening plate 4 from loosening, ensure the limiting effect of the fastening plate 4 on the inner connector assembly 137, facilitate the disassembly and assembly of the fastening plate 4, and facilitate the maintenance of the cooling pipe connector 131.

[0073] Of course, this application is not limited to this. The limiting member can be a fastening pull plate, which is located on the outside of the housing 1 and connected to the inner connector assembly 137. It can apply a force to the inner connector assembly 137 toward the outer connector 136, thereby preventing the inner connector assembly 137 from moving away from the outer connector 136. The limiting member can also be a fastener, which is inserted on the housing 1 and can cooperate with the surface of the inner connector assembly 137 in the direction perpendicular to the axis of the first hole 13. It restricts the movement of the inner connector assembly 137 toward the outer connector 136 by friction.

[0074] In the embodiments of this application, referring to Figure 4, the inner connector assembly 137 includes a connecting pipe 134 and an inner connector 135. The connecting pipe 134 passes through the first hole 13, and one end of the connecting pipe 134 communicates with the outer connector 136. The inner connector 135 is connected to the end of the connecting pipe 134 opposite to the outer connector 136 and is used to communicate with the cooling pipe assembly 22. Specifically, the first interface is provided on the inner connector 135 of the liquid inlet pipe connector 132, and the second interface is provided on the outer connector 136 of the liquid outlet pipe connector 133. After the coolant flows out from the liquid passage 301, The coolant flows from the outer connector 136 of the inlet pipe connector 132 to the connecting pipe 134, and then flows into the inlet cooling pipe 221 through the first interface on the inner connector 135 of the inlet pipe connector 132. The coolant in the inlet cooling pipe 221 exchanges heat with the wire assembly 21 to reduce the heat of the wire assembly 21. After heat exchange, the coolant flows in the charging gun 50 to the outlet cooling pipe 222 and then enters the connecting pipe 134 through the second interface on the inner connector 135 of the outlet pipe connector 133. Finally, it flows back to the liquid path 301 through the outer connector 136 of the outlet pipe connector 133.

[0075] In a specific example, referring to Figure 4, the connecting pipe 134 and the inner connector 135 are integrated, which simplifies the assembly process of the cooling pipe connector 131 and facilitates the assembly of the cooling pipe connector 131 with the housing 1.

[0076] Of course, this application is not limited to this. The inner connector assembly 137 may also include only a connecting pipe. The end of the connecting pipe opposite to the outer connector 136 has multiple branch pipes. The first interface is provided on the branch pipe of the liquid inlet connector 132, and the number of the first interfaces corresponds one-to-one with the number of the branch pipes of the liquid inlet connector 132. The second interface is provided on the branch pipe of the liquid outlet connector 133, and the number of the second interfaces corresponds one-to-one with the number of the branch pipes of the liquid outlet connector 133.

[0077] In the embodiments of this application, referring to Figure 4, the cross-section of the inner connector 135 is square along the axial direction of the first hole 13. The receiving cavity 11 has a limiting rib, which fits against the inner connector 135 and extends along the circumferential direction of the inner connector 135. This limiting rib is used to restrict the movement of the inner connector 135 in a direction perpendicular to the axis of the first hole 13, thereby positioning the inner connector 135, ensuring the fixation of the cooling pipe connector 131, ensuring the connection between the cooling pipe assembly 22 and the cooling pipe connector 131, and preventing the connection between the cooling pipe assembly 22 and the cooling pipe connector 131 from loosening and leaking liquid.

[0078] It should be noted that, as shown in Figure 4, since the inner connector 135 is generally cuboid, it can provide a fitting end face for the fastening plate 4, so that the fastening plate 4 fits against the side of the inner connector 135 opposite to the outer connector 136, thereby improving the limiting effect of the fastening plate 4 on the inner connector 135, ensuring the fixation of the cooling pipe connector 131, ensuring the connection between the cooling pipe assembly 22 and the cooling pipe connector 131, and preventing the connection between the cooling pipe assembly 22 and the cooling pipe connector 131 from loosening and leaking.

[0079] In the embodiments of this application, the cooling pipe connector 131 is detachably connected to the housing 1, which facilitates the disassembly and assembly of the cooling pipe connector 131, making the assembly of the hydraulic-electric isolation connection device 10 simpler, shortening the disassembly and assembly time of the hydraulic-electric isolation connection device 10, and reducing the production cost of the hydraulic-electric isolation connection device 10.

[0080] For example, when the cooling pipe connector 131 is snapped into the housing 1, the difficulty of fitting the cooling pipe connector 131 to the housing 1 can be reduced, making the assembly of the cooling pipe connector 131 easier and simplifying the assembly of the electro-hydraulic isolation connection device 10, shortening the disassembly and assembly time of the electro-hydraulic isolation connection device 10, and reducing the production cost of the electro-hydraulic isolation connection device 10. When the cooling pipe connector 131 is threaded into the housing 1, the reliability and stability of the connection between the cooling pipe connector 131 and the housing 1 can be ensured, preventing loosening of the connection between the cooling pipe connector 131 and the housing 1, facilitating the disassembly and assembly of the cooling pipe connector 131 and the housing 1, and providing repeatability. Of course, this application is not limited to this; the cooling pipe connector 131 can be locked to the housing 1 by threads, or it can be fastened to the housing 1 by a pressure plate, or it can be connected to the housing 1 by other reliable fixing methods.

[0081] In the embodiments of this application, a first sealing element is provided between the cooling pipe joint 131 and the housing 1, and a reliable seal can be formed between the cooling pipe joint 131 and the housing 1. On the one hand, it can prevent leakage from the connection position between the cooling pipe joint 131 and the liquid passage 301 from flowing into the housing 1 through the gap between the cooling pipe joint 131 and the housing 1, thereby avoiding affecting the electrical connection of the wire assembly 21 and ensuring the safety performance of the hydraulic-electric isolation connection device 10. On the other hand, it can prevent dust, moisture and other contaminants from entering the interior of the hydraulic-electric isolation connection device 10 through the gap between the cooling pipe joint 131 and the housing 1, ensuring the stability of the hydraulic-electric isolation connection device 10 and extending the service life of the hydraulic-electric isolation connection device 10.

[0082] In the embodiments of this application, the cooling pipe connector 131 passes through the first hole 13, and a first sealing element is provided between the cooling pipe connector 131 and the inner wall of the first hole 13. A reliable seal can be formed between the cooling pipe connector 131 and the housing 1. On the one hand, this can prevent leakage from the connection position between the cooling pipe connector 131 and the liquid passage 301 from flowing into the housing 1 through the gap between the cooling pipe connector 131 and the inner wall of the first hole 13, thereby avoiding affecting the electrical connection of the wire assembly 21 and ensuring the safety performance of the hydraulic-electric isolation connection device 10. On the other hand, it can prevent dust, moisture and other contaminants from entering the interior of the hydraulic-electric isolation connection device 10 through the gap between the cooling pipe connector 131 and the inner wall of the first hole 13, ensuring the stability of the hydraulic-electric isolation connection device 10 and extending its service life. Specifically, the first sealing element can be a sealant, a soft rubber ring or other reliable sealing method.

[0083] In some other embodiments of this application, the cooling pipe connector 131 and the housing 1 are integrated, which simplifies the assembly process of the hydraulic-electric isolation connection device 10 and facilitates its assembly. It also prevents dust, water seals, leakage and other contaminants from entering the interior of the hydraulic-electric isolation connection device 10 through the gap between the cooling pipe connector 131 and the housing 1, thus ensuring the stability of the hydraulic-electric isolation connection device 10 and extending its service life.

[0084] In some embodiments of this application, as shown in Figure 4, a second sealing element 121 is provided between the cable 2 and the housing 1, which can form a reliable seal between the cable 2 and the housing 1 to prevent dust, moisture and other contaminants from entering the interior of the electrohydraulic isolation connection device 10 through the gap between the cable 2 and the housing 1, thereby ensuring the stability of the electrohydraulic isolation connection device 10 and extending its service life.

[0085] In the embodiments of this application, referring to Figure 4, the cable 2 is inserted into the wire hole 12, and a second sealing element 121 is provided between the cable 2 and the inner wall of the wire hole 12. On the one hand, a reliable seal can be formed between the cable 2 and the housing 1, preventing dust, moisture and other contaminants from entering the interior of the electro-hydraulic isolation connection device 10 through the gap between the cable 2 and the inner wall of the wire hole 12, ensuring the stability of the electro-hydraulic isolation connection device 10 and extending its service life. On the other hand, it can effectively prevent the cable 2 from being damaged by friction, which is conducive to inserting the cable 2 into the wire hole 12, extending the service life of the cable 2, improving the safety of the power supply equipment 100, and ensuring charging safety.

[0086] In some embodiments of this application, referring to Figure 3 and in conjunction with Figure 4, a first fastening block 151 is provided on the inner wall of the receiving cavity 11. The first fastening block 151 is integrated into the housing 1. The first fastening block 151 has a first clearance groove, which is recessed in the direction away from the second hole 14. The first clearance groove is disposed opposite to the wire hole 12 to restrict the movement of the cable 2 in the receiving cavity 11, prevent the cable 2 from shaking in the receiving cavity 11, and prevent the cable 2 from becoming loose or falling off during the charging process. This is beneficial to improving the overall safety performance of the power supply equipment 100.

[0087] In the embodiments of this application, referring to Figures 3 and 4, a second fastening block 152 is provided in the receiving cavity 11. The second fastening block 152 is located on the side of the first fastening block 151 with the first relief groove and is connected to the first fastening block 151. The second fastening block 152 has a second relief groove, which is recessed toward the second hole 14. The second relief groove is arranged opposite to the first relief groove to restrict the movement of the cable 2 in the receiving cavity 11. This can firmly fix the cable 2 in the housing 1, prevent the cable 2 from shaking in the receiving cavity 11, and ensure that the cable 2 will not loosen or fall off during the charging process, which is beneficial to improving the overall safety performance of the power supply equipment 100.

[0088] It is understandable that after the cable 2 is inserted into the receiving cavity 11 through the cable hole 12, the cable 2 is first positioned in the first relief groove, and then the second fastening block 152 is connected to the first fastening block 151 to limit the cable 2 between the first relief groove and the second relief groove, thereby reducing the difficulty of fixing the cable 2 and ensuring the limiting effect of the fastening device 15 on the cable 2.

[0089] In the embodiments of this application, referring to Figure 3 and in conjunction with Figure 4, the second fastening block 152 is detachably connected to the first fastening block 151, allowing the second fastening block 152 to be easily assembled onto or removed from the first fastening block 151. This simplifies the assembly and disassembly process of the electro-hydraulic isolation connection device 10, facilitates the maintenance and replacement of the second fastening block 152, and reduces the maintenance cost of the electro-hydraulic isolation connection device 10. It should be noted that the second fastening block 152 and the first fastening block 151 can be locked by threads, by snap-fit, or by other reliable fixing methods; no further limitations are imposed here.

[0090] In some embodiments of this application, referring to Figures 3 and 4, a sealing ring 3 is provided on the side end face of the housing 1 with the second hole 14. The sealing ring 3 is arranged around the second hole 14. The outer shell 20 of the power supply device 100 has a through hole. The second hole 14 is opposite to and communicates with the through hole. The sealing ring 3 surrounds the through hole of the outer shell 20. The arrangement of the sealing ring 3 can prevent dust, moisture and other contaminants from entering the interior of the power supply device 100 through the gap between the housing 1 and the outer shell 20, ensuring the normal operation of the power supply device 100, avoiding interference or even damage to the operation of the power supply device 100, improving the stability of the power supply device 100, ensuring the performance of the power supply device 100, and extending the service life of the power supply device 100.

[0091] In some embodiments of this application, referring to Figures 3 and 4, the side end face of the housing 1 with the second hole 14 has a plurality of mounting holes 16. The plurality of mounting holes 16 are located radially outside the second hole 14 and are spaced apart along the circumferential direction of the second hole 14. The housing 1 and the outer shell 20 are connected by fasteners. The plurality of fasteners are respectively inserted into the plurality of mounting holes 16 and fixed on the outer shell 20, so as to realize the fixed connection between the housing 1 and the outer shell 20 from multiple places, ensuring the reliability of the connection between the housing 1 and the outer shell 20, and ensuring the installation of the hydraulic-electric isolation connection device 10.

[0092] It is understandable that by connecting the housing 1 and the outer shell 20 with fasteners, the reliability and stability of the connection between the housing 1 and the outer shell 20 can be ensured, the assembly reliability of the hydraulic-electric isolation connection device 10 can be guaranteed, the assembly and disassembly of the housing 1 and the outer shell 20 can be facilitated, the hydraulic-electric isolation connection device 10 can be easily assembled onto the outer shell 20, the maintenance cost of the hydraulic-electric isolation connection device 10 can be reduced, and by connecting the housing 1 and the outer shell 20 with fasteners, the end faces of the housing 1 and the outer shell 20 can be tightly attached, further compressing the sealing ring 3 to achieve the sealing requirements.

[0093] This application also proposes a power supply device 100 having the electro-hydraulic isolation connection device 10 of the above embodiments.

[0094] As shown in Figure 1, the power supply equipment 100 according to an embodiment of this application includes a housing 20, a power distribution module 40, a heat exchange system 30, and the aforementioned electro-hydraulic isolation connection device 10.

[0095] Specifically, referring to Figures 1 and 2, the outer casing 20 is provided with through holes. The outer casing 20 can protect the internal structure of the power supply equipment 100, preventing damage caused by exposure of the internal structure, thus extending the service life of the power supply equipment 100 and providing a better appearance. In the embodiments of this application, the power distribution module 40 is disposed inside the outer casing 20. The power distribution module 40 includes an AC-DC power module 401 and a DC-DC power module 402, capable of AC-to-DC and DC-to-DC conversion. In the embodiments of this application, referring to Figure 5, the heat exchange system 30 is disposed inside the outer casing 20 and is isolated from the power distribution module 40.

[0096] In the embodiments of this application, referring to Figures 1 and 5, the liquid-electric isolation connection device 10 is provided at the through hole for connecting the liquid circuit 301 of the heat exchange system 30 and the circuit 403 of the power distribution module 40 to the cable 2.

[0097] In a specific example, referring to Figures 1, 2, and 3, the heat exchange system 30 includes a radiator, a water pump, and a water tank. The water pump first draws coolant from the water tank and transfers it to the liquid path 301. The liquid path 301 transfers the coolant to the cooling tube assembly 22 through the cooling tube connector 131. The coolant in the cooling tube assembly 22 exchanges heat with the wire assembly 21 to reduce the heat of the wire assembly 21. After heat exchange, the coolant flows back to the cooling tube assembly 22 in the charging gun 50. The coolant in the cooling tube assembly 22 flows to the liquid path 301 through the cooling tube connector 131. After heat exchange with the radiator, the coolant in the liquid path 301 returns to the water tank.

[0098] According to the embodiments of this application, the power supply device 100 is equipped with the aforementioned liquid-electric isolation connection device 10. The liquid-electric isolation connection device 10 can connect the liquid circuit 301 and the circuit 403 isolated on the power supply device 100 to the cable 2. While ensuring normal power supply to the charging gun 50, it can ensure the isolation of the liquid circuit 301 and the circuit 403, thereby avoiding the risk of leakage or short circuit in the circuit 403 and the internal components of the power supply device 100 when the liquid circuit 301 of the power supply device 100 leaks coolant, thus improving the safety performance of the liquid-electric isolation connection device 10.

[0099] In some embodiments of this application, referring to Figure 1, the electro-hydraulic isolation connection device 10 is disposed on the outer wall of the housing and is disposed opposite to the through hole. The second hole 14 is opposite to and communicates with the through hole. The wire group 21 passes through the through hole and is electrically connected to the circuit 403. Specifically, after the positive wire 211 and the negative wire 212 pass through the wire hole 12 into the receiving cavity 11, they are respectively connected to the positive copper busbar 213 and the negative copper busbar 214. The positive copper busbar 213 and the negative copper busbar 214 pass through the second hole 14 and extend into the housing 20 through the through hole, and are connected to the circuit 403 of the power distribution module 40.

[0100] In some embodiments of this application, referring to Figure 1, the liquid path 301 is located on the outside of the housing 20, and the two ends of the cooling pipe connector 131 are connected to the cooling pipe group 22 and the liquid path 301 respectively. By placing the liquid path 301 on the outside of the housing 20 and the power distribution module 40 on the inside of the housing 20, spatial isolation between the circuit and the liquid path can be achieved, avoiding the leakage of coolant in the cooling circuit of the power supply equipment 100 due to high pressure in the liquid path, aging of the pipes, after-sales maintenance, etc., reducing the risk of leakage or short circuit in the wire group 21, copper busbar and components inside the housing 20, and improving the safety performance of the liquid-electric isolation connection device 10.

[0101] In some embodiments of this application, with reference to Figures 1, 2 and 3, the liquid path 301 includes an inlet heat exchange pipe 302 and an outlet heat exchange pipe 303. The inlet heat exchange pipe 302 and the outlet heat exchange pipe 303 are connected to the cable 2. The inlet heat exchange pipe 302 is used to transport the coolant in the heat exchange system 30 to the cooling pipe assembly 22 to realize heat exchange between the cooling pipe assembly 22 and the wire assembly 21, thereby reducing the heat of the wire assembly 21. The outlet heat exchange pipe 303 is used to recover the coolant that has undergone heat exchange in the cooling pipe assembly 22, thereby realizing the circulation of the coolant.

[0102] In a specific example, referring to Figures 1, 2, and 3, the water pump first draws coolant from the water tank and transfers it to the inlet heat exchange pipe 302. The inlet heat exchange pipe 302 transfers the coolant to the inlet cooling pipe 221 through the cooling pipe connector 131. The coolant in the inlet cooling pipe 221 exchanges heat with the wire assembly 21 to reduce the heat of the wire assembly 21. After heat exchange, the coolant flows in the charging gun 50 to the outlet cooling pipe 222. The coolant in the outlet cooling pipe 222 flows to the outlet heat exchange pipe 303 through the cooling pipe connector 131. After heat exchange with the radiator, the coolant in the outlet heat exchange pipe 303 returns to the water tank.

[0103] In some embodiments of this application, referring to Figures 2 and 5, the outer casing 20 has an electrical compartment 201 and a heat exchange compartment 202, which are arranged vertically (as shown in Figure 2). The power distribution module 40 is located inside the electrical compartment 201, and the heat exchange system 30 is located inside the heat exchange compartment 202. The electrical compartment 201 has a certain sealing effect, meeting the requirements of IP54 and above, and needs to prevent harmful dust accumulation and avoid liquid spillage onto the outer casing 20, thus preventing damage. It also meets the sealing requirements of the internal high-pressure and low-pressure components. The heat exchange compartment 202 has no sealing or a low sealing level requirement, only needing to meet the external heat exchange requirements of the heat exchange system 30.

[0104] In some embodiments of this application, referring to Figures 1 and 2, the power supply device 100 further includes a charging gun 50. One end of the cable 2 away from the electrohydraulic isolation connection device 10 is connected to the charging gun 50. The charging gun 50 is adapted to be fixed on the housing 20. When the user does not need to charge the vehicle, the charging gun 50 is fixed on the housing 20 to realize the placement and storage of the charging gun 50. When the user needs to charge the vehicle, the charging gun 50 is removed from the housing 20 and the charging gun 50 is matched with the charging port on the vehicle to realize the charging of the vehicle.

[0105] Other configurations and operations of the electro-hydraulic isolation connection device 10 and the power supply equipment 100 according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0107] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A hydraulic-electric isolation connection device, wherein, For power supply equipment (100), the power supply equipment (100) has a liquid circuit (301), a circuit (403) and a cable (2), the liquid circuit (301) and the circuit (403) are isolated, and the liquid-electric isolation connection device (10) is used to connect the liquid circuit (301) and the circuit (403) to the cable (2).

2. The electro-hydraulic isolation connection device according to claim 1, wherein, include: The housing (1) has a receiving cavity (11) and a wire passage hole (12), a first hole (13) and a second hole (14) communicating with the receiving cavity (11). The liquid passage (301) is adapted to be connected to the cable (2) through the first hole (13). The circuit (403) is adapted to be connected to the cable (2) through the second hole (14). The cable (2) is adapted to pass through the receiving cavity (11) from the wire passage hole (12).

3. The electro-hydraulic isolation connection device according to claim 2, wherein, The first hole (13) and the second hole (14) are located on different sides of the receiving cavity (11).

4. The electrohydraulic isolation connection device according to any one of claims 2-3, wherein, The cable (2) includes a conductor assembly (21) and a cooling pipe assembly (22). The conductor assembly (21) is adapted to be connected to the circuit (403) through the second hole (14), and the cooling pipe assembly (22) is adapted to be connected to the liquid circuit (301) through the first hole (13).

5. The electrohydraulic isolation connection device according to claim 4, wherein, The conductor group (21) includes a positive conductor (211) and a negative conductor (212). The positive conductor (211) and the negative conductor (212) are respectively connected to a positive copper busbar (213) and a negative copper busbar (214) at the ends facing the second hole (14). The positive copper busbar (213) and the negative copper busbar (214) are adapted to be electrically connected to the circuit (403).

6. The electro-hydraulic isolation connection device according to claim 5, wherein, The positive electrode copper busbar (213) and the negative electrode copper busbar (214) extend out of the receiving cavity (11) from the second hole (14), and the positive electrode copper busbar (213) and the negative electrode copper busbar (214) are movable relative to the housing (1).

7. The electrohydraulic isolation connection device according to any one of claims 4-6, wherein, A cooling pipe connector (131) is provided at the first hole (13). One end of the cooling pipe connector (131) is connected to the cooling pipe assembly (22), and the other end is connected to the liquid passage (301).

8. The electrohydraulic isolation connection device according to claim 7, wherein, The cooling pipe assembly (22) includes an inlet cooling pipe (221) and an outlet cooling pipe (222). There are multiple cooling pipe connectors (131), each of which includes an inlet pipe connector (132) and an outlet pipe connector (133). One end of the inlet pipe connector (132) is connected to the inlet cooling pipe (221), and the other end is connected to the liquid passage (301). One end of the outlet pipe connector (133) is connected to the outlet cooling pipe (222), and the other end is connected to the liquid passage (301).

9. The electrohydraulic isolation connection device according to claim 8, wherein, There are multiple liquid inlet cooling pipes (221), and the liquid inlet pipe connector (132) has multiple first interfaces that correspond one-to-one with and are connected to the multiple liquid inlet cooling pipes (221); And / or, there are multiple liquid outlet cooling pipes (222), and the liquid outlet pipe connector (133) has multiple second interfaces that correspond one-to-one with and are connected to the multiple liquid outlet cooling pipes (222).

10. The electrohydraulic isolation connection device according to any one of claims 7-9, wherein, The cooling pipe connector (131) includes: An inner connector assembly (137) is inserted into the first hole (13), and one end of the inner connector assembly (137) facing the inside of the receiving cavity (11) is connected to the cooling pipe assembly (22). An external connector (136) is connected to the end of the internal connector assembly (137) opposite to the cooling pipe assembly (22) and is used to communicate with the liquid passage (301).

11. The electrohydraulic isolation connection device according to claim 10, wherein, The electro-hydraulic isolation connection device (10) further includes: A limiting member is provided on the housing (1) to restrict the movement of the inner connector assembly (137) within the receiving cavity (11).

12. The electrohydraulic isolation connection device according to claim 11, wherein, The limiting member is a fastening pressure plate (4), which is located on the side of the inner connector assembly (137) away from the outer connector (136) and connected to the housing (1), and is used to restrict the movement of the inner connector assembly (137) in the direction away from the outer connector (136).

13. The electrohydraulic isolation connection device according to any one of claims 10-12, wherein, The internal connector assembly (137) includes: A connecting pipe (134) is inserted into the first hole (13), and one end of the connecting pipe (134) is connected to the external connector (136). An inner connector (135) is connected to the end of the connecting pipe (134) opposite to the outer connector (136) and is used to communicate with the cooling pipe assembly (22).

14. The electrohydraulic isolation connection device according to claim 13, wherein, Along the axial direction of the first hole (13), the cross-section of the inner connector (135) is square, and the receiving cavity (11) has a limiting rib. The limiting rib fits against the inner connector (135) to restrict the movement of the inner connector (135) in a direction perpendicular to the axis of the first hole (13).

15. The electrohydraulic isolation connection device according to any one of claims 7-14, wherein, A first seal is provided between the cooling pipe joint (131) and the housing (1).

16. The electrohydraulic isolation connection device according to claim 15, wherein, The cooling pipe connector (131) is inserted into the first hole (13), and the first sealing element is provided between the cooling pipe connector (131) and the inner wall of the first hole (13).

17. The electrohydraulic isolation connection device according to any one of claims 7-16, wherein, The cooling pipe connector (131) and the housing (1) are an integral part.

18. The electrohydraulic isolation connection device according to any one of claims 4-17, wherein, A second seal (121) is provided between the cable (2) and the housing (1).

19. The electrohydraulic isolation connection device according to claim 18, wherein, The cable (2) passes through the wire hole (12), and the second sealing element (121) is provided between the cable (2) and the inner wall of the wire hole (12).

20. The electrohydraulic isolation connection device according to any one of claims 2-19, wherein, The inner wall of the receiving cavity (11) is provided with a first fastening block (151), and the first fastening block (151) has a first clearance groove.

21. The electrohydraulic isolation connection device according to claim 20, wherein, The receiving cavity (11) is provided with a second fastening block (152). The second fastening block (152) is located on the side of the first fastening block (151) that has the first clearance groove and is connected to the first fastening block (151). The second fastening block (152) has a second clearance groove, which is arranged opposite to the first clearance groove to restrict the movement of the cable (2) in the receiving cavity (11).

22. The electrohydraulic isolation connection device according to claim 21, wherein, The second fastening block (152) is detachably connected to the first fastening block (151).

23. The hydraulic-electric isolation connection device according to any one of claims 2-22, wherein, A sealing ring (3) is provided on one end face of the housing (1) with the second hole (14), and the sealing ring (3) is arranged around the second hole (14).

24. The electrohydraulic isolation connection device according to any one of claims 2-23, wherein, The housing (1) has a plurality of mounting holes (16) on one side end face where the second hole (14) is provided. The plurality of mounting holes (16) are located radially outside the second hole (14) and are spaced apart along the circumferential direction of the second hole (14).

25. A power supply device, wherein, include: The outer casing (20) has through holes; A power distribution module (40) is disposed inside the housing (20); A heat exchange system (30) is disposed inside the outer casing (20) and is isolated from the power distribution module (40); According to any one of claims 1-24, the liquid-electric isolation connection device (10) is provided at the through hole and is used to connect the liquid circuit (301) of the heat exchange system (30) and the circuit (403) of the power distribution module (40) to the cable (2).

26. The power supply equipment according to claim 25, wherein, The electrohydraulic isolation connection device (10) is disposed on the outer wall of the housing (20) and is disposed opposite to the through hole.

27. The power supply equipment according to claim 26, wherein, The liquid passage (301) is located on the outside of the outer casing (20).

28. The power supply equipment according to any one of claims 25-27, wherein, The liquid circuit (301) includes an inlet heat exchange pipe (302) and an outlet heat exchange pipe (303), and the inlet heat exchange pipe (302) and the outlet heat exchange pipe (303) are connected to the cable (2).

29. The power supply equipment according to any one of claims 25-28, wherein, The outer shell (20) has an electrical compartment (201) and a heat exchange compartment (202), which are arranged vertically. The power distribution module (40) is located in the electrical compartment (201), and the heat exchange system (30) is located in the heat exchange compartment (202).

30. The power supply equipment according to any one of claims 25-29, wherein, Also includes: The charging gun (50) is connected to the end of the cable (2) that is away from the electro-hydraulic isolation connection device (10).

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