Battery device

Abstract

The utility model relates to the technical field of batteries, in particular to a battery device which comprises a box body, a battery and a heat exchange structure, the battery is arranged in the box body; the heat exchange structure comprises a heat exchange plate, a buffer support plate and a protective layer; the heat exchange plate is provided with a heat exchange part and a connecting part, the heat exchange part corresponds to the battery in position and is used for exchanging heat with the battery, and the connecting part is connected to the box body; the buffer supporting plate is provided with a first surface, a second surface and a side surface connected between the first surface and the second surface, the first surface and the second surface are opposite, the buffer supporting plate is arranged on the surface of the side, back to the battery, of the heat exchange part through the first surface, and the buffer supporting plate is not arranged on the connecting part; the protective layer is arranged on the second surface and the side surface of the buffer supporting plate and is also arranged on the surface of one side, back to the battery, of the connecting part.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery device. Background Art

[0002] In the existing design of battery devices, the heat exchange plate has a heat exchange portion for exchanging heat with the battery and a connection portion for connecting to the housing. The connection portion is directly exposed and easily corroded by water vapor from the external environment, causing rust or damage caused by other factors, resulting in failure of the connection between the heat exchange plate and the housing, affecting the structural stability and heat exchange performance of the battery device. Utility Model Content

[0003] A main purpose of the present invention is to overcome at least one defect of the above-mentioned prior art and provide a battery device that can alleviate or avoid the corrosion problem of the connection part between the heat exchange plate and the box body.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] According to one aspect of the utility model, a battery device is provided, which includes a box, a battery and a heat exchange structure; the battery is arranged in the box; the heat exchange structure includes a heat exchange plate, a buffer support plate and a protective layer; the heat exchange plate has a heat exchange part and a connecting part, the position of the heat exchange part is arranged corresponding to the position of the battery and is used for heat exchange with the battery, and the connecting part is connected to the box; the buffer support plate has opposite first surfaces, a second surface and a side surface connected between the first surface and the second surface, the buffer support plate is arranged on a side surface of the heat exchange part facing away from the battery via the first surface, and the buffer support plate is not arranged on the connecting part; the protective layer is arranged on the second surface and the side surface of the buffer support plate, and is also arranged on a side surface of the connecting part facing away from the battery.

[0006] It can be seen from the above technical solutions that the advantages and positive effects of the battery device proposed by the utility model are:

[0007] The heat exchange structure of the battery device proposed in the utility model includes a heat exchange plate, a buffer support plate and a protective layer. The heat exchange plate has a heat exchange portion corresponding to the battery arrangement and a connecting portion for connecting to the box body. The buffer support plate has a first surface, a second surface and a side surface, and the ice is arranged on the side surface of the heat exchange portion facing away from the battery through the first surface. The protective layer is arranged on the second surface and the side surface of the buffer support plate, and is also arranged on the side surface of the connecting portion facing away from the battery. Through the above-mentioned structural design, the utility model can use the buffer support plate to provide buffering and support functions for the heat exchange portion of the heat exchange plate, and at the same time use the protective layer to provide protection for the buffer support plate and strengthen the connection effect between the buffer support plate and the heat exchange plate. On this basis, the utility model arranges the protective layer at the connecting portion of the heat exchange plate, and can use the protective layer to provide protection for the connecting portion, so as to avoid the connecting portion being directly exposed and easily rusted, and ensure the connection effect of the heat exchange plate and the box body via the connecting portion, which is beneficial to improving the structural stability of the battery device and ensuring the heat exchange performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0009] Figure 1 is a schematic diagram of a three-dimensional structure of a battery device according to an exemplary embodiment;

[0010] Figure 2 yes Figure 1 A three-dimensional exploded schematic diagram of a heat exchange structure is shown;

[0011] Figure 3 yes Figure 1 A partial cross-sectional view of the heat exchange structure shown;

[0012] Figure 4 is a schematic diagram of a three-dimensional structure of a battery device according to another exemplary embodiment.

[0013] The following are the descriptions of the reference numerals:

[0014] 100. Box body;

[0015] 200.Heat exchange structure;

[0016] 210.Heat exchange plate;

[0017] 211. Heat exchange unit;

[0018] 212. Connecting part;

[0019] 2121. First area;

[0020] 2122. Second area;

[0021] 213. Connectors;

[0022] 220. Buffer support plate;

[0023] 2201. First surface;

[0024] 2202. Second surface;

[0025] 2203. Side;

[0026] 230. Protective layer. DETAILED DESCRIPTION

[0027] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and drawings therein are essentially for illustrative purposes rather than for limiting the present invention.

[0028] In the following description of different exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part of the utility model and in which different exemplary structures, systems and steps that can implement multiple aspects of the utility model are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the utility model. Moreover, although the terms "above", "between", "within", etc. can be used in this specification to describe different exemplary features and elements of the utility model, these terms are used herein only for convenience, such as according to the direction of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the utility model.

[0029] See also Figures 1 to 3 , Figure 1 A three-dimensional structural schematic diagram of a battery device that can embody the principle of the utility model is representatively shown in FIG. Figure 2 , a three-dimensional exploded schematic diagram of the heat exchange structure 200 is representatively shown, wherein the exploded structure of the heat exchange structure 200 in a bottom-up perspective is specifically shown; Figure 3 A partial cross-sectional view of the heat exchange structure 200 is representatively shown in FIG. 2 . The structure, connection mode and functional relationship of each main component of the battery device proposed by the present invention will be described in detail below in conjunction with the above drawings.

[0030] like Figures 1 to 3As shown, in one embodiment of the present invention, the battery device proposed by the present invention includes a box body 100, a battery and a heat exchange structure 200. The battery is arranged in the box body 100. The heat exchange structure 200 includes a heat exchange plate 210, a buffer support plate 220 and a protective layer 230. The heat exchange plate 210 has a heat exchange portion 211 and a connecting portion 212. The position of the heat exchange portion 211 is arranged corresponding to the position of the battery and is used for heat exchange with the battery. The connecting portion 212 is connected to the box body 100. For example, taking the example of a heat exchange flow channel inside the heat exchange plate 210, the heat exchange flow channel can be only provided in the heat exchange portion 211 of the heat exchange plate 210 but not in the connecting portion 212. The buffer support plate 220 has opposite first surfaces 2201, second surfaces 2202, and a side surface 2203 connected between the first surface 2201 and the second surface 2202. The buffer support plate 220 is disposed on a side surface of the heat exchange portion 211 facing away from the battery via the first surface 2201, and the buffer support plate 220 is not disposed on the connection portion 212. The protective layer 230 is disposed on the second surface 2202 and the side surface 2203 of the buffer support plate 220, and the protective layer 230 is also disposed on a side surface of the connection portion 212 facing away from the battery. Through the above structural design, the utility model can use the buffer support plate 220 to provide buffering and supporting functions for the heat exchange portion 211 of the heat exchange plate 210, and at the same time use the protective layer 230 to provide a protective function for the buffer support plate 220 and strengthen the connection effect between the buffer support plate 220 and the heat exchange plate 210. On this basis, the utility model sets the protective layer 230 on the connecting portion 212 of the heat exchange plate 210, and can use the protective layer 230 to provide protection for the connecting portion 212, thereby preventing the connecting portion 212 from being directly exposed and easily corroded, thereby ensuring the connection effect between the heat exchange plate 210 and the box body 100 via the connecting portion 212, which is beneficial to improving the structural stability of the battery device and ensuring the heat exchange performance.

[0031] In one embodiment of the present invention, the heat exchange plate 210 and the buffer support plate 220 may be bonded, and the protective layer 230 and the connection portion 212 may be bonded. On this basis, the bonding strength between the protective layer 230 and the connection portion 212 may be greater than the bonding strength between the heat exchange plate 210 and the buffer support plate 220. Through the above structural design, the present invention can further improve the connection strength between the buffer support plate 220 and the heat exchange plate 210 by using the protective layer 230, while ensuring that the connection portion 212 between the protective layer 230 and the heat exchange plate 210 will not cause connection failure.

[0032] It should be noted that the bonding strength between the components in this specification can be measured by a roller peeling test. Taking the bonding strength between the protective layer 230 and the connecting portion 212 as an example, the roller peeling strength between the protective layer 230 and the connecting portion 212 can be measured by the above test method, and the bonding strength between the above two can be characterized. The above roller peeling test can specifically refer to the test method of GB / T 1457 "Sandwich Structure Roller Peel Strength Test Method".

[0033] In one embodiment of the utility model, the heat exchange plate 210 and the first surface 2201 of the buffer support plate 220 can be bonded. On this basis, the bonding strength between the protective layer 230 and the buffer support plate 220 can be less than the bonding strength between the heat exchange plate 210 and the buffer support plate 220. Through the above structural design, the difference in bonding strength between the above two aspects can reflect from the side that even if the bonding between the buffer support plate 220 and the protective layer 230 fails, the buffer support plate 220 and the heat exchange plate 210 still maintain bonding. For example, the bonding strength between the protective layer 230 and the buffer support plate 230 (i.e., the roller peel strength) can be greater than or equal to 100 (N·mm) / mm.

[0034] In one embodiment of the present invention, the material of the protective layer 230 can be a composite material, such as but not limited to glass fiber. In some embodiments, the material of the protective layer 230 can also be other types of composite materials, such as other types of carbon fiber reinforced composite materials (Carbon Fiber Reinforced Epoxy, CFRE) materials, and is not limited to this embodiment.

[0035] In one embodiment of the present invention, the buffer support plate 220 may be a honeycomb plate. For example, the honeycomb plate includes a plurality of honeycomb holes, and the axis of the honeycomb hole may extend along the relative arrangement direction of the heat exchange plate 210 and the honeycomb plate, that is, the axis of the honeycomb hole is perpendicular to the first surface 2201 or the second surface 2202, that is, the honeycomb hole wall is perpendicular to the first surface 2201 or the second surface 2202.

[0036] See also Figure 4 , Figure 4 Detailed description of the invention is given in the figure which is a three-dimensional structural diagram of a battery device in another exemplary embodiment which can embody the principle of the present invention.

[0037] like Figure 4As shown, in one embodiment of the present invention, the connection portion 212 of the heat exchange plate 210 can be connected to the housing 100 via the connection piece 213, and the connection piece 213 is partially exposed on the surface of the connection portion 212 facing away from the battery. On this basis, the protective layer 230 can cover the exposed portion of the connection piece 213. Through the above structural design, the present invention can use the protective layer 230 to cover and protect the connection piece 213, ensure that the connection piece 213 effectively connects the heat exchange plate 210 and the housing 100, and improve the structural stability of the battery device.

[0038] Based on the structural design that the connection part 212 of the heat exchange plate 210 is connected to the box body 100 via the connection piece 213, in one embodiment of the present invention, the material of the connection piece 213 can be metal, for example, the connection piece 213 can be a bolt. Accordingly, the present invention can prevent the connection piece 213 from being exposed and rusting during long-term use.

[0039] It should be noted that the battery devices shown in the drawings and described in this specification are only a few examples of many battery devices that can adopt the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the battery devices shown in the drawings or described in this specification.

[0040] In summary, the heat exchange structure 200 of the battery device proposed in the utility model includes a heat exchange plate 210, a buffer support plate 220 and a protective layer 230. The heat exchange plate 210 has a heat exchange portion 211 corresponding to the battery arrangement and a connection portion 212 for connecting the box 100. The buffer support plate 220 has a first surface 2201, a second surface 2202 and a side 2203, and ice is arranged on a side surface of the heat exchange portion 211 facing away from the battery via the first surface 2201. The protective layer 230 is arranged on the second surface 2202 and the side 2203 of the buffer support plate 220, and is also arranged on a side surface of the connection portion 212 facing away from the battery. Through the above structural design, the utility model can use the buffer support plate 220 to provide buffering and support functions for the heat exchange portion 211 of the heat exchange plate 210, and at the same time use the protective layer 230 to provide protection for the buffer support plate 220 and strengthen the connection effect between the buffer support plate 220 and the heat exchange plate 210. On this basis, the utility model sets the protective layer 230 on the connecting portion 212 of the heat exchange plate 210, and can use the protective layer 230 to provide protection for the connecting portion 212, thereby preventing the connecting portion 212 from being directly exposed and easily corroded, thereby ensuring the connection effect between the heat exchange plate 210 and the box body 100 via the connecting portion 212, which is beneficial to improving the structural stability of the battery device and ensuring the heat exchange performance.

[0041] The exemplary embodiments of the battery device proposed by the utility model are described and / or illustrated in detail above. However, the embodiments of the utility model are not limited to the specific embodiments described here. On the contrary, the components and / or steps of each embodiment can be used independently and separately from other components and / or steps described here. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated here, the terms "one", "one" and "above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including" and "having" are used to indicate the meaning of open inclusion and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc. In addition, the terms "first" and "second" in the claims and the specification are used only as marks and are not numerical restrictions on their objects.

[0042] Although the battery device of the present invention has been described according to various specific embodiments, those skilled in the art will recognize that the present invention can be implemented with modifications within the spirit and scope of the claims.

Claims

1. A battery device, characterized in that: include: Box; A battery, arranged in the box; as well as Heat exchange structure, including: a heat exchange plate, comprising a heat exchange portion and a connection portion, wherein the heat exchange portion is arranged corresponding to the position of the battery and is used for exchanging heat with the battery, and the connection portion is connected to the box; a buffer support plate having opposite first and second surfaces and a side surface connected between the first and second surfaces, wherein the buffer support plate is disposed on a side surface of the heat exchange portion facing away from the battery via the first surface, and the buffer support plate is not disposed on the connecting portion; and The protective layer is arranged on the second surface and the side surface of the buffer support plate, and is also arranged on the side surface of the connecting portion which is away from the battery.

2. The battery device according to claim 1, characterized in that: The heat exchange plate is bonded to the buffer support plate, and the protective layer is bonded to the connection portion; wherein the bonding strength between the protective layer and the connection portion is greater than the bonding strength between the heat exchange plate and the buffer support plate.

3. The battery device according to claim 1, characterized in that: The heat exchange plate is bonded to the first surface of the buffer support plate; wherein the bonding strength between the protective layer and the buffer support plate is smaller than the bonding strength between the heat exchange plate and the buffer support plate.

4. The battery device according to claim 1, characterized in that: The material of the protective layer is a composite material.

5. The battery device according to claim 1, characterized in that: The buffer support plate is a honeycomb plate.

6. The battery device according to any one of claims 1 to 5, characterized in that: The connecting portion is connected to the box body via a connecting piece, and the connecting piece is partially exposed on a surface of the connecting portion facing away from the battery; wherein the protective layer covers the exposed portion of the connecting piece.

7. The battery device according to claim 6, characterized in that: The connecting piece is made of metal.

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