A cold plate structure, a battery pack and an electric device

Abstract

The application relates to the technical field of power batteries, and provides a cold plate structure, a battery pack and an electric equipment, which comprise a cold plate body, a first water connection reserved part and a second water connection reserved part, a cooling flow channel is arranged in the cold plate body, the cooling flow channel comprises a water inlet end and a water outlet end; the first water connection reserved part is arranged at the front end of the cold plate body, the first water connection reserved part comprises a first water inlet reserved pipe and a first water outlet reserved pipe; the second water connection reserved part is arranged at the rear end of the cold plate body, and the second water connection reserved part comprises a second water inlet reserved pipe and a second water outlet reserved pipe. In the application, the water inlet and outlet can be connected at the front end or the rear end of the cold plate body, the original layout of the cooling flow channel can be reserved, one set of cold plate structure can meet the application of front-drive and rear-drive electric vehicles, and the overall application cost can be effectively reduced.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and more specifically, to a cold plate structure, a battery pack, and an electrical device. Background Technology

[0002] Currently, electric vehicles are mainly classified into three drive systems: front-wheel drive, rear-wheel drive, and four-wheel drive. For front-wheel drive vehicles, the electric drive system is typically installed in the front compartment; for rear-wheel drive vehicles, the electric drive system is typically installed in the rear compartment. However, the thermal management system of electric vehicles is generally designed in the front compartment. Therefore, the inlet and outlet of the cooling circuit in the power battery are usually installed and connected in the front compartment. However, due to the difference between front-wheel drive and rear-wheel drive, the electrical interface of the power battery may be located at the front or rear.

[0003] Under such application requirements, due to the different driving forms, the positions of the water outlet and electrical interface are different. The traditional approach is to design the battery pack cold plate separately for front-wheel drive and rear-wheel drive vehicles so that the flow channel design in the cold plate can better match the placement of electrical components. Therefore, two sets of molds need to be made, which results in high application costs and inconvenience for warehousing management. Utility Model Content

[0004] In order to overcome at least one of the disadvantages of the prior art, the purpose of this application is to provide a cold plate structure, a battery pack, and an electrical device.

[0005] The technical means adopted in this application to solve the above-mentioned technical problems are:

[0006] On one hand, this application provides a cold-plate structure, including:

[0007] The cold plate body has a cooling channel inside it, and the cooling channel includes a water inlet and a water outlet.

[0008] The first water receiving reserved part is disposed at the front end of the cold plate body. The first water receiving reserved part includes a first water inlet reserved pipe and a first water outlet reserved pipe. The first water inlet reserved pipe is connected to the water inlet end, and the first water outlet reserved pipe is connected to the water outlet end.

[0009] The second water inlet is located at the rear end of the cold plate body. The second water inlet includes a second water inlet pipe and a second water outlet pipe. The second water inlet pipe is connected to the water inlet end, and the second water outlet pipe is connected to the water outlet end.

[0010] In this application, the first and second water inlet / outlet portions allow for water inlet / outlet connections at either the front or rear end of the cold plate body. Simultaneously, both the first and second water inlet / outlet portions are connected to the inlet and outlet ends of the cooling channel. Therefore, the original layout of the cooling channel can be retained. In this case, a single cold plate structure can meet the needs of both front-wheel drive and rear-wheel drive electric vehicles, effectively reducing overall application costs.

[0011] In some embodiments, the first water receiving portion and the second water receiving portion are arranged symmetrically.

[0012] In this application, by setting the first water receiving reserved part and the second water receiving reserved part in a symmetrical form, it is convenient to process and form the cold plate structure.

[0013] This application also provides a battery pack having a cold plate structure as described above.

[0014] In this application, by applying the cold plate structure described above within the battery pack, the compatibility between the battery pack and the electric vehicle can be improved, for example, enabling the battery pack to be installed and applied in front-wheel drive or rear-wheel drive electric vehicles; moreover, the placement of electrical components within the battery pack can still maintain correspondence with the cooling channels within the cold plate structure.

[0015] In some embodiments, the battery pack further includes a housing frame, the housing frame having an electrical component mounting area and a plurality of battery mounting areas, the electrical component mounting areas being located at one end of the housing frame;

[0016] The housing frame is mounted on the cold plate body.

[0017] In this application, the electrical component mounting area facilitates the installation of electrical components within the enclosure frame; and by placing the electrical component mounting area at one end of the enclosure frame, it facilitates the routing of electrical component wiring.

[0018] In some embodiments, the first water inlet and the second water inlet are located on the outside of the housing frame.

[0019] In this application, by setting the first water inlet and the second water inlet on the outside of the box frame, the safety risk caused by leakage at the first water inlet and / or the second water inlet can be effectively reduced.

[0020] In some embodiments, a sealing structure is provided between the housing frame and the cold plate body;

[0021] And / or, tapping and riveting screws are provided between the housing frame and the cold plate body.

[0022] In this application, the sealing structure facilitates a sealed connection between the housing frame and the cold plate body, and provides a sealed barrier to the inner and outer sides of the housing frame.

[0023] In some embodiments, the battery pack further includes a bottom protective plate, and a rivet screw assembly is provided between the bottom protective plate and the housing frame, wherein the rivet screw assembly falls within the coverage area of ​​the sealing structure in the vertical direction.

[0024] In this application, the bottom protective plate facilitates the application protection of the cold plate body.

[0025] In some embodiments, the edge of the bottom protective plate is provided with a first folded edge structure, the first folded edge structure is fitted to the cold plate body, and the rivet screw assembly is installed on the first folded edge structure;

[0026] A buffer space is formed between the middle of the bottom protective plate and the cold plate body.

[0027] In this application, the buffer space formed can further improve the safety protection effect of the cold plate body.

[0028] In some embodiments, a second folded edge structure is provided in the middle of the bottom protective plate. The second folded edge structure is arranged in a ring shape, and a sealing gasket is provided between the second folded edge structure and the cold plate body.

[0029] In this application, the sealing gasket can form a sealed space between the bottom protective plate and the cold plate body, thereby facilitating the normal use of the buffer space.

[0030] In addition, this application also provides an electrical device having a battery pack as described above.

[0031] In this application, by using the battery pack described above in the electrical equipment, the compatibility of the battery pack in the electrical equipment and its safety protection performance can be improved. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram illustrating the application of the battery pack in this application when adapted to a front-drive configuration.

[0034] Figure 2 This is a schematic diagram illustrating the application of the battery pack in this application when adapted to a rear-drive configuration.

[0035] Figure 3 This is a partial cross-sectional structural diagram of the inlet and outlet of this application.

[0036] Figure 4 This is a partial cross-sectional view of the tapping and riveting screw in this application.

[0037] Figure 5 This is a partial cross-sectional view of the rivet bolt assembly in this application.

[0038] Marker explanation:

[0039] 1-Cold plate body, 11-First water inlet reserved part, 111-First water inlet reserved pipe, 112-First water outlet reserved pipe, 12-Second water inlet reserved part, 121-Second water inlet reserved pipe, 122-Second water outlet reserved pipe;

[0040] 2-Box frame, 201-Electrical component installation area, 202-Battery installation area, 21-Terminal, 22-Tapping and riveting screws, 23-Bottom plate, 231-First folded edge structure, 232-Buffer space, 233-Second folded edge structure, 24-Rivet bolts, 241-Rivet nuts, 25-Sealing gasket. Detailed Implementation

[0041] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. Similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

[0043] Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance, or requiring or implying any actual relationship or order between entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] like Figures 1 to 5 As shown, this embodiment provides a cold plate structure, including:

[0045] The cold plate body 1 has a cooling channel inside it, and the cooling channel includes a water inlet and a water outlet.

[0046] The first water receiving reserved part 11 is disposed at the front end of the cold plate body 1. The first water receiving reserved part 11 includes a first water inlet reserved pipe 111 and a first water outlet reserved pipe 112. The first water inlet reserved pipe 111 is connected to the water inlet end, and the first water outlet reserved pipe 112 is connected to the water outlet end.

[0047] The second water inlet 12 is located at the rear end of the cold plate body 1. The second water inlet 12 includes a second water inlet pipe 121 and a second water outlet pipe 122. The second water inlet pipe 121 is connected to the water inlet end, and the second water outlet pipe 122 is connected to the water outlet end.

[0048] In some embodiments, reference Figure 1 and Figure 2 As shown, machining positions are reserved on the first water inlet reserved pipe 111, the first water outlet reserved pipe 112, the second water inlet reserved pipe 121, and the second water outlet reserved pipe 122. According to the actual installation requirements of the front-drive or rear-drive type, water inlets are machined on the first water inlet reserved pipe 111, the first water outlet reserved pipe 112, or the second water inlet reserved pipe 121 and the second water outlet reserved pipe 122.

[0049] In some embodiments, the first water inlet reserved pipe 111, the first water outlet reserved pipe 112, the second water inlet reserved pipe 121, and the second water outlet reserved pipe 122 are all provided with water inlets. A sealing element can be provided at the water inlet to seal the water inlet that is not used for actual water connection.

[0050] The first water inlet 11 and the second water inlet 12 allow for water inlet and outlet connections at either the front or rear end of the cold plate body 1. Both the first water inlet 11 and the second water inlet 12 are connected to the water inlet and outlet of the cooling channel. When used in a front-wheel drive application, the water inlet and outlet connections are achieved solely through the first water inlet 11; when used in a rear-wheel drive application, the connections are achieved solely through the second water inlet 12. Therefore, the original channel design and layout of key areas of the cooling channel can be retained, ensuring effective heat exchange for critical heat dissipation areas. In this case, a single cold plate structure can meet the needs of both front-wheel drive and rear-wheel drive electric vehicles, effectively reducing overall application costs and facilitating warehouse management.

[0051] As one application example, see reference Figure 1 and Figure 2 As shown, the first water receiving reserved part 11 and the second water receiving reserved part 12 are arranged symmetrically.

[0052] In some embodiments, the first water receiving portion 11 and the second water receiving portion 12 are both located at the centerline of the cold plate body 1.

[0053] By symmetrically arranging the first water-receiving reserved part 11 and the second water-receiving reserved part 12, the positions of the first water-receiving reserved part 11 and the second water-receiving reserved part 12 can overlap after the cold plate body 1 is rotated 180° in the plane. The overall processing parameters are the same or similar, which can facilitate the improvement of the processing and forming efficiency of the cold plate structure.

[0054] On the other hand, reference Figures 1 to 5 As shown in the figure, this embodiment also provides a battery pack, in which a cold plate structure as described above is provided.

[0055] By applying the cold plate structure described above within the battery pack, the compatibility between the battery pack and the electric vehicle can be improved, for example, enabling the battery pack to be installed in front-wheel drive or rear-wheel drive electric vehicles; moreover, the placement of electrical components within the battery pack can still maintain correspondence with the cooling channels within the cold plate structure.

[0056] As one example of its application, such as Figure 1 and Figure 2 As shown, the battery pack also includes a housing frame 2, and the housing frame 2 is provided with an electrical component mounting area 201 and a plurality of battery mounting areas 202. The electrical component mounting area 201 is located at one end of the housing frame 2.

[0057] The box frame 2 is mounted on the cold plate body 1.

[0058] In some embodiments, the housing frame 2 is provided with a wiring terminal 21, which is connected to the electrical component mounting area 201.

[0059] The electrical component mounting area 201 facilitates the installation of electrical components within the housing frame 2, and the installed components can be electrically led out through the wiring terminals 21. The battery mounting area 202 can be used for the installation of battery cells or battery modules. Positioning the electrical component mounting area 201 at one end of the housing frame 2 further facilitates the routing of electrical components and the flow channel design within the cold plate body 1, enabling connection to the electric vehicle's drive system or control system.

[0060] As one application example, see reference Figures 1 to 3 As shown, the first water receiving reserved part 11 and the second water receiving reserved part 12 are located on the outside of the box frame 2.

[0061] By arranging the first water inlet 11 and the second water inlet 12 on the outside of the housing frame 2, compared with the conventional method of placing the water inlet and outlet inside the housing frame 2, the impact on electrical components caused by leakage at the first water inlet 11 and / or the second water inlet 12 can be avoided, effectively reducing the safety risks of the battery pack in application.

[0062] As one application example, a sealing structure is provided between the box frame 2 and the cold plate body 1;

[0063] And / or, a tapping and riveting screw 22 is provided between the box frame 2 and the cold plate body 1.

[0064] In some embodiments, the sealing structure is a sealant applied between the housing frame 2 and the cold plate body 1.

[0065] In some embodiments, the sealing structure is a sealing gasket disposed between the housing frame 2 and the cold plate body 1.

[0066] In some embodiments, the tapping and riveting screw 22 passes through the bottom of the cold plate body 1 and connects to the housing frame 2 located at the top of the cold plate body 1, thereby fixing the cold plate body 1 to the housing frame 2. Vertically, the tapping and riveting screw 22 falls within the coverage area of ​​the sealing structure.

[0067] In some embodiments, the tapping and riveting screw 22 may also be replaced with other fastening screws or bolts.

[0068] The sealing structure facilitates the sealing connection between the housing frame 2 and the cold plate body 1, and provides sealing and isolation for the inner and outer sides of the housing frame 2.

[0069] As one application example, see reference Figures 3 to 5 As shown, the battery pack also includes a bottom protective plate 23, and a rivet screw assembly is provided between the bottom protective plate 23 and the housing frame 2. In the vertical direction, the rivet screw assembly falls within the coverage area of ​​the sealing structure.

[0070] In some embodiments, the bottom guard plate 23 is disposed at the bottom of the cold plate body 1, and the bottom guard plate 23, the cold plate body 1, and the box frame 2 are installed and fixed by the connection of the rivet screw assembly.

[0071] In some embodiments, the rivet screw assembly includes a rivet bolt 24 and a rivet nut 241 disposed in the housing frame 2. The rivet bolt 24 passes sequentially through the bottom of the bottom guard plate 23, the cold plate body 1, and the bottom surface layer of the housing frame 2, and then connects to the rivet nut 241.

[0072] The bottom guard plate 23 can be used to protect the cold plate body 1, reducing the damage to the cold plate body 1 caused by bottom bumps or ball strikes during the operation of the electric vehicle.

[0073] As one application example, see reference Figure 5 As shown, the bottom guard plate 23 is provided with a first folded edge structure 231 on its edge. The first folded edge structure 231 is fitted to the cold plate body 1, and the rivet screw assembly is installed on the first folded edge structure 231.

[0074] A buffer space 232 is formed between the middle of the bottom protective plate 23 and the cold plate body 1.

[0075] The buffer space 232 formed can further improve the safety protection effect of the bottom guard plate 23 on the cold plate body 1.

[0076] As one application example, see reference Figure 4 and Figure 5 As shown, a second folded edge structure 233 is provided in the middle of the bottom protective plate 23. The second folded edge structure 233 is arranged in a ring shape, and a sealing gasket 25 is provided between the second folded edge structure 233 and the cold plate body 1.

[0077] In some embodiments, there is at least one second hemming structure 233 provided; for example, when there is one second hemming structure 233, it is arranged in a "square" shape on the bottom guard plate 23; for another example, when there are two second hemming structures 233, they are arranged in a "doubly-return" shape on the bottom guard plate 23.

[0078] In some embodiments, after the rivet connection assembly is installed and fixed, the gasket 25 is in a compressed state, and the compression rate of the gasket 25 is not less than 70%.

[0079] In some embodiments, the width of the gasket 25 is set to be greater than or equal to 5 mm.

[0080] By providing the gasket 25, a sealed space can be formed between the bottom guard plate 23 and the cold plate body 1, thus facilitating the normal application of the buffer space 232.

[0081] In addition, in the solution of this embodiment, there is also provided an electrical device, and the battery pack as described above is arranged in the electrical device.

[0082] In some embodiments, the electrical device is an electric vehicle or an industrial transport vehicle.

[0083] By applying the battery pack as described above in the electrical device, it is possible to facilitate the improvement of the application adaptability and safety protection performance of the battery pack in the electrical device.

[0084] The above is only the specific implementation manner of the present application, and is not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and they should also be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claimed rights.

Claims

1. A cold-plate structure, characterized in that, include: The cold plate body has a cooling channel inside it, and the cooling channel includes a water inlet and a water outlet. The first water receiving reserved part is disposed at the front end of the cold plate body. The first water receiving reserved part includes a first water inlet reserved pipe and a first water outlet reserved pipe. The first water inlet reserved pipe is connected to the water inlet end, and the first water outlet reserved pipe is connected to the water outlet end. The second water inlet is located at the rear end of the cold plate body. The second water inlet includes a second water inlet pipe and a second water outlet pipe. The second water inlet pipe is connected to the water inlet end, and the second water outlet pipe is connected to the water outlet end.

2. The cold plate structure according to claim 1, characterized in that, The first water receiving reserved part and the second water receiving reserved part are arranged symmetrically.

3. A battery pack, characterized in that, It has a cold plate structure as described in claim 1 or 2 above.

4. The battery pack according to claim 3, characterized in that, The device includes a housing frame, within which an electrical component mounting area and several battery mounting areas are provided, with the electrical component mounting area located at one end of the housing frame. The housing frame is mounted on the cold plate body.

5. The battery pack according to claim 4, characterized in that, The first and second water inlet portions are located on the outside of the housing frame.

6. The battery pack according to claim 5, characterized in that, A sealing structure is provided between the box frame and the cold plate body; And / or, tapping and riveting screws are provided between the housing frame and the cold plate body.

7. The battery pack according to claim 6, characterized in that, It also includes a bottom protective plate, and a rivet bolt assembly is provided between the bottom protective plate and the box frame. In the vertical direction, the rivet bolt assembly falls within the coverage area of ​​the sealing structure.

8. The battery pack according to claim 7, characterized in that, The bottom guard plate has a first folded edge structure on its edge, and the first folded edge structure is fitted to the cold plate body. The rivet screw assembly is installed on the first folded edge structure. A buffer space is formed between the middle of the bottom protective plate and the cold plate body.

9. The battery pack according to claim 7 or 8, characterized in that, The bottom protective plate has a second folded edge structure in the middle, the second folded edge structure is arranged in a ring shape, and a sealing gasket is provided between the second folded edge structure and the cold plate body.

10. An electrical appliance, characterized in that, It contains a battery pack as described in any one of claims 3-9.

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