Electro-hydraulic integrated connecting device, battery pack and vehicle

Abstract

The utility model relates to an electro-hydraulic integrated connecting device, a battery pack and a vehicle, which are used for solving the technical problems that external connecting wires of the battery pack are redundant, the occupied space is large, and the weight of the whole vehicle is increased. The electro-hydraulic integrated connecting device comprises an expansion valve arranged on a battery pack, a high-voltage plug-in arranged on the battery pack and an integrated pipeline arranged on the outer side of the battery pack, the integrated pipeline comprises a conductive wall part and a cavity defined by the wall part, and the wall part is suitable for being electrically connected with the high-voltage plug-in to serve as a high-voltage wire. The cavity is suitable for being in fluid communication with the expansion valve so as to serve as a refrigerant flow channel.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power batteries, and in particular, to an electro-hydraulic integrated connection device, a battery pack, and a vehicle. Background Art

[0002] In related technologies, the arrangement of devices on the battery pack follows the principle of liquid-electric separation, and the high-voltage plug-in and the refrigerant interface are arranged at different positions on the battery pack tray. On the outside of the battery pack, high-voltage cables are required to connect the high-voltage plug-in on the battery pack to realize the charging and discharging of the battery pack, and liquid cooling pipes are required to connect the refrigerant interface to transport cooling medium to cool or heat the battery pack.

[0003] This will result in a large number of external wiring in the battery pack. Since most of the external wiring in the battery pack is made of metal, the external wiring will not only occupy the structural space of the entire vehicle, but also increase the weight of the entire vehicle. Utility Model Content

[0004] The purpose of the present disclosure is to provide an electro-hydraulic integrated connection device, a battery pack and a vehicle to solve the technical problems of redundant external wiring of the battery pack, large space occupied and increased weight of the vehicle.

[0005] In order to achieve the above-mentioned objectives, the present disclosure provides an electro-hydraulic integrated connection device, including: an expansion valve, arranged in a battery pack, a high-voltage plug-in, arranged in the battery pack, and an integrated pipeline, arranged on the outside of the battery pack, the integrated pipeline including a conductive wall portion and a cavity formed by the wall portion, the wall portion is suitable for being electrically connected to the high-voltage plug-in to serve as a high-voltage wire, and the cavity is suitable for being in fluid communication with the expansion valve to serve as a refrigerant flow channel.

[0006] Optionally, the electro-hydraulic integrated connection device also includes: a first refrigerant connector, which is arranged at the end of the integrated pipeline, the first refrigerant connector can be detachably connected to the expansion valve, and is fluidically connected between the cavity and the expansion valve; and a first high-pressure plug, which is arranged at the same end of the integrated pipeline as the first refrigerant connector, the first high-pressure plug can be detachably connected to the high-pressure plug-in, and is electrically connected between the wall portion and the high-pressure plug-in.

[0007] Optionally, the first refrigerant joint is constructed as a ceramic insulating joint, which is sleeved on the end of the integrated pipeline and sealed with the cavity. The ceramic insulating joint can also be sealed with the expansion valve.

[0008] Optionally, the first high-voltage plug includes: a plug body adapted to be detachably connected to the high-voltage plug-in unit, and a conductive connector electrically connected between the plug body and the wall portion, wherein the conductive connector is flexible.

[0009] Optionally, the wall portion includes: a conductive layer, a first insulating layer coated on an inner side of the conductive layer to separate the cavity from the conductive layer, and a second insulating layer coated on an outer side of the conductive layer.

[0010] Optionally, the electro-hydraulic integrated connection device further includes an integrated socket module, the integrated socket module includes a mounting seat, the high-voltage plug-in and the expansion valve are both arranged on the mounting seat, and the mounting seat is fixedly connected to the battery pack.

[0011] Optionally, a fastening mounting hole is provided on the mounting seat to be connected to the battery pack via a fastener, and a sealing ring is provided on the outer side of the mounting seat to ensure a sealed connection between the mounting seat and the battery pack.

[0012] Optionally, the electro-hydraulic integrated connection device includes two integrated pipelines, the cavity of one of the two integrated pipelines is used as the refrigerant flow channel for liquid inlet, and the cavity of the other of the two integrated pipelines is used as the refrigerant flow channel for liquid outlet, and the cross-sectional area of ​​the cavity used as the refrigerant flow channel for liquid outlet is larger than the cross-sectional area of ​​the cavity used as the refrigerant flow channel for liquid inlet, the wall of one of the two integrated pipelines is used as the high-voltage wire of the positive electrode, and the wall of the other of the two integrated pipelines is used as the high-voltage wire of the negative electrode.

[0013] On the basis of the above technical solution, the present disclosure further provides a battery pack, which is suitable for use with the electro-hydraulic integrated connection device in the above technical solution.

[0014] On the basis of the above technical solution, the present disclosure also provides a vehicle, comprising the battery pack in the above technical solution.

[0015] Through the above technical solution, in the electro-hydraulic integrated connection device provided by the present disclosure, the refrigerant flow channel and the high-voltage wire are integrated on the integrated pipeline. The integrated pipeline can be used to transport the refrigerant and realize electrical conduction. This can reduce the number of external wiring harnesses of the battery pack, thereby reducing the use of metal conductor materials, reducing costs, and reducing the overall weight of the external wiring harnesses, and can also reduce the structural space occupied by the external wiring harnesses in the entire vehicle. The battery pack provided by the present disclosure has the same technical effect as the electro-hydraulic integrated connection device in the above technical solution. In order to avoid unnecessary repetition, it will not be described in detail here. The vehicle provided by the present disclosure has the same technical effect as the battery pack in the above technical solution. In order to avoid unnecessary repetition, it will not be described in detail here.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the assembly of the integrated pipeline, the first refrigerant connector and the first high-pressure plug in a specific embodiment of the present disclosure;

[0019] Figure 2 is a cross-sectional view of an integrated pipeline in a specific embodiment of the present disclosure;

[0020] Figure 3 is a structural diagram of an integrated socket module in a specific embodiment of the present disclosure;

[0021] Figure 4 It is a schematic assembly diagram of the integrated socket module, integrated pipeline, second refrigerant connector and second high-voltage plug at one angle in a specific embodiment of the present disclosure;

[0022] Figure 5 It is a schematic assembly diagram from another angle of the integrated socket module, integrated pipeline, second refrigerant connector and second high-voltage plug in a specific embodiment of the present disclosure.

[0023] Description of Reference Numerals

[0024] 10-integrated pipeline, 11-wall, 111-conductive layer, 112-first insulating layer, 113-second insulating layer, 12-cavity,

[0025] 20-integrated socket module, 201-mounting seat, 202-fastening mounting hole,

[0026] 2- Expansion valve,

[0027] 3- High voltage plug-in,

[0028] 4-First refrigerant connector,

[0029] 5-first high-voltage plug, 50-plug body, 51-conductive connector,

[0030] 6- Second refrigerant connector,

[0031] 7- Second high voltage plug. DETAILED DESCRIPTION

[0032] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0033] In this disclosure, unless otherwise indicated, directional terms such as "inner" and "outer" refer to the inner and outer portions relative to the contours of the corresponding component. Terms such as "first" and "second" are used in this disclosure to distinguish one element from another and do not imply order or importance. In addition, in the following description referring to the accompanying drawings, unless otherwise indicated, identical numbers in different drawings represent identical or similar elements.

[0034] According to a specific embodiment of the present disclosure, an electro-hydraulic integrated connection device is provided, referring to Figures 1 to 5 As shown, the electro-hydraulic integrated connection device may include an expansion valve 2, a high-voltage plug-in 3, and an integrated pipeline 10. The expansion valve 2 and the high-voltage plug-in 3 may both be located within a battery pack (not shown). Specifically, the expansion valve 2 and the high-voltage plug-in 3 may both be located within a battery pack tray (not shown). The integrated pipeline 10 may be located outside the battery pack. The integrated pipeline 10 may include a conductive wall 11 and a cavity 12 formed by the wall 11. The wall 11 is adapted to electrically connect to the high-voltage plug-in 3 to serve as a high-voltage conductor. The cavity 12 is adapted to fluidically communicate with the expansion valve 2 to serve as a refrigerant flow channel. Specifically, the integrated pipeline 10 may be constructed as a pipe structure, with the pipe wall of the pipe structure serving as the wall 11 and the hollow portion of the pipe structure serving as the cavity 12.

[0035] Through the above technical solution, in the electro-hydraulic integrated connection device provided in the present invention, the refrigerant flow channel and the high-voltage wire are integrated on the integrated pipeline 10. The integrated pipeline 10 can both transport the refrigerant and realize electrical conduction. This can reduce the number of external wiring harnesses of the battery pack, thereby reducing the use of metal conductor materials, reducing costs, and reducing the overall weight of the external wiring harness, and can also reduce the structural space occupied by the external wiring harness in the entire vehicle.

[0036] In order to connect the cavity 12 of the integrated pipeline 10 with the expansion valve 2, refer to Figure 1 As shown, the electro-hydraulic integrated connection device may further include a first refrigerant connector 4 provided at the end of the integrated pipeline 10. The first refrigerant connector 4 can be detachably connected to the expansion valve 2. When the first refrigerant connector 4 is connected to the expansion valve 2, the first refrigerant connector 4 can be fluidically connected between the cavity 12 and the expansion valve 2. When the first refrigerant connector 4 is removed from the expansion valve 2, the fluid communication between the cavity 12 and the expansion valve 2 can be cut off. In addition, the detachable connection between the first refrigerant connector 4 and the expansion valve 2 enables rapid disassembly and assembly of the first refrigerant connector 4 and the expansion valve 2.

[0037] In a specific embodiment of the present disclosure, the first refrigerant joint 4 can be a hollow ceramic insulating joint, which can be sleeved and fixed on the end of the integrated pipeline 10 and maintained in a sealed connection with the cavity 12. The ceramic insulating joint can also be sealed with the expansion valve 2 to avoid refrigerant leakage.

[0038] It should be noted that the refrigerant referred to in the present disclosure is usually a coolant. Depending on the actual situation, the refrigerant can also be a phase change material.

[0039] In order to electrically connect the pipe wall 11 of the integrated pipeline 10 to the high-voltage plug-in 3, refer to Figure 1 and Figure 4 As shown, the electro-hydraulic integrated connection device may further include a first high-voltage plug 5. The first high-voltage plug 5 may be disposed at the same end of the integrated pipeline 10 as the first refrigerant connector 4, so that the integrated pipeline 10 can be connected to the battery pack through this end. The first high-voltage plug 5 can be detachably connected to the high-voltage plug-in 3 and electrically connected between the wall portion 11 and the high-voltage plug-in 3. The detachable connection between the first high-voltage plug 5 and the high-voltage plug-in 3 enables rapid assembly and disassembly of the first high-voltage plug 5 and the high-voltage plug-in 3.

[0040] refer to Figure 4 and Figure 5 As shown, the side of the expansion valve 2 facing outside the battery pack is connected to the first refrigerant connector 4, and the side of the expansion valve 2 facing inside the battery pack is connected to the second refrigerant connector 6, which is connected to the cooling system inside the battery pack. The side of the high-voltage plug-in unit 3 facing outside the battery pack is connected to the first high-voltage plug 5, and the side of the high-voltage plug-in unit 3 facing inside the battery pack is connected to the second high-voltage plug 7, which is connected to the high-voltage wiring harness inside the battery pack.

[0041] refer to Figure 1 As shown, the first high-voltage plug 5 may include a plug body 50 and a conductive connector 51, wherein the plug body 50 is adapted to be detachably connected to the high-voltage plug 3, and the conductive connector 51 may be electrically connected between the plug body 50 and the wall portion 11. The conductive connector 51 may be flexible to facilitate movement of the first high-voltage plug 5 relative to the integrated pipeline 10, thereby facilitating connection between the first high-voltage plug 5 and the high-voltage plug 3.

[0042] Among them, the conductive connecting part 51 can include a conductive metal soft film and an insulating coating coated on the surface of the metal soft film. The insulating coating can prevent the conductive connecting part 51 from leaking or short-circuiting, and the insulating coating can avoid the position on the metal soft film for contacting the wall 11.

[0043] refer to Figure 2 As shown, the wall 11 may include a conductive layer 111, which may be made of a metallic conductive material. The inner side of the conductive layer 111 may be coated with a first insulating layer 112 to separate the cavity 12 from the conductive layer 111 to avoid leakage caused by contact between the refrigerant and the conductive layer 111. The outer side of the conductive layer 11 may be coated with a second insulating layer 113 to avoid leakage or even short circuit of the wall 11.

[0044] In addition, in order to facilitate the installation of the expansion valve 2 and the high-pressure plug-in 3, refer to Figures 3 to 5 As shown, the electro-hydraulic integrated connection device may further include an integrated socket module 20, which may include a mounting base 201. The high-voltage plug-in 3 and the expansion valve 2 may both be mounted on the mounting base 201. The mounting base 201 may be fixedly connected to the battery pack tray. By connecting the mounting base 201 to the battery pack, the high-voltage plug-in 3 and the expansion valve 2 can be installed, thus reducing assembly steps and improving assembly efficiency.

[0045] refer to Figures 3 to 5 As shown, the mounting base 201 may be provided with a plurality of fastening holes 202, allowing the mounting base 201 to be connected to the battery pack via fasteners. Furthermore, a sealing ring (not shown) may be provided on the outside of the mounting base 201 to provide a sealed connection between the mounting base 201 and the battery pack. Thus, the mounting base 201 is connected to the battery pack tray via the sealing ring and fasteners, achieving an integral seal between the integrated socket module 20 and the battery pack tray.

[0046] refer to Figure 1 、 Figure 4 as well as Figure 5 As shown, the electro-hydraulic integrated connection device may include two manifolds 10. The cavity 12 of one of the two manifolds 10 may be used as a refrigerant flow passage for liquid inlet, and the cavity 12 of the other of the two manifolds 10 may be used as a refrigerant flow passage for liquid outlet. The cross-sectional area of ​​the cavity 12 used as the refrigerant flow passage for liquid outlet is larger than the cross-sectional area of ​​the cavity 12 used as the refrigerant flow passage for liquid inlet. That is, of the two manifolds 10, the inner diameter of the manifold 10 used for liquid outlet is larger than the inner diameter of the manifold 10 used for liquid inlet.

[0047] refer to Figure 1 、 Figure 4 as well as Figure 5 As shown, the wall 11 of one of the two integrated pipelines 10 can be used as the positive high-voltage conductor, and the wall 11 of the other of the two integrated pipelines 10 can be used as the negative high-voltage conductor. Accordingly, the high-voltage plug-in 3 is a two-core high-voltage plug-in, and the second high-voltage plug 7 is a two-core high-voltage plug.

[0048] On the basis of the above technical solution, the present disclosure further provides a battery pack, which is suitable for use with the electro-hydraulic integrated connection device in the above technical solution.

[0049] Through the above technical solution, the battery pack provided by the present disclosure has the same technical effect as the electro-hydraulic integrated connection device in the above technical solution. In order to avoid unnecessary repetition, it will not be described here.

[0050] On the basis of the above technical solution, the present disclosure also provides a vehicle, comprising the battery pack in the above technical solution.

[0051] Through the above technical solution, the vehicle provided by the present disclosure has the same technical effect as the battery pack in the above technical solution. In order to avoid unnecessary repetition, it will not be described here.

[0052] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0053] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0054] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An electro-hydraulic integrated connection device, characterized in that: include: Expansion valve, installed in the battery pack, A high-voltage plug-in is provided in the battery pack, and An integrated pipeline is arranged on the outside of the battery pack, and the integrated pipeline includes a conductive wall portion and a cavity formed by the wall portion. The wall portion is suitable for being electrically connected to the high-voltage plug-in to serve as a high-voltage wire, and the cavity is suitable for being in fluid communication with the expansion valve to serve as a refrigerant flow channel.

2. The electro-hydraulic integrated connection device according to claim 1, characterized in that: The electro-hydraulic integrated connection device further comprises: a first refrigerant connector, disposed at an end of the integrated pipeline, the first refrigerant connector being detachably connected to the expansion valve and being fluidically connected between the cavity and the expansion valve; and The first high-pressure plug is provided at the same end of the integrated pipeline as the first refrigerant connector. The first high-pressure plug can be detachably connected to the high-pressure plug-in and is electrically connected between the wall portion and the high-pressure plug-in.

3. The electro-hydraulic integrated connection device according to claim 2, characterized in that: The first refrigerant joint is constructed as a ceramic insulating joint, which is sleeved on the end of the integrated pipeline and is sealed with the cavity. The ceramic insulating joint can also be sealed with the expansion valve.

4. The electro-hydraulic integrated connection device according to claim 2, characterized in that: The first high-voltage plug includes: a plug body adapted to be detachably connected to the high-voltage plug-in, and A conductive connecting piece is electrically connected between the plug body and the wall portion, and the conductive connecting piece is flexible.

5. The electro-hydraulic integrated connection device according to any one of claims 1 to 4, characterized in that: The wall portion comprises: conductive layer, a first insulating layer coated on the inner side of the conductive layer to separate the cavity from the conductive layer, and The second insulating layer is coated on the outer side of the conductive layer.

6. The electro-hydraulic integrated connection device according to claim 1, characterized in that: The electro-hydraulic integrated connection device further includes an integrated socket module, which includes a mounting seat. The high-voltage plug-in and the expansion valve are both arranged on the mounting seat, and the mounting seat is fixedly connected to the battery pack.

7. The electro-hydraulic integrated connection device according to claim 6, characterized in that: The mounting base is provided with a fastening mounting hole for connecting with the battery pack via a fastener. A sealing ring is sleeved on the outer side of the mounting seat so that the mounting seat is sealed and connected to the battery pack.

8. The electro-hydraulic integrated connection device according to claim 1, characterized in that: The electro-hydraulic integrated connection device includes two integrated pipelines, the cavity of one of the two integrated pipelines is used as the refrigerant flow channel for liquid inlet, and the cavity of the other of the two integrated pipelines is used as the refrigerant flow channel for liquid outlet, and the cross-sectional area of ​​the cavity used as the refrigerant flow channel for liquid outlet is larger than the cross-sectional area of ​​the cavity used as the refrigerant flow channel for liquid inlet, The wall portion of one of the two integrated pipelines is used as the high-voltage wire for the positive electrode, and the wall portion of the other of the two integrated pipelines is used as the high-voltage wire for the negative electrode.

9. A battery pack, characterized in that: The battery pack is suitable for use with the electro-hydraulic integrated connection device according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Including the battery pack according to claim 9.

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