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 and a buffer supporting plate; the heat exchange plate is connected to the box body and is used for exchanging heat with the battery; the buffer supporting plate is arranged on the surface of one side, back to the battery, of the heat exchange plate; a first chamfering structure is arranged on the edge of the side, back on to the heat exchange plate, of the buffering supporting plate. By means of the structural design, the stress concentration problem of the corresponding portions of the buffering supporting plate can be relieved through the first chamfer structures, and the structural strength of the buffering supporting plate can be enhanced. Meanwhile, due to the adoption of the first chamfer structure, the corresponding part of the buffer supporting plate is not easy to be impacted, the risk that the buffer supporting plate is damaged and even falls off is reduced, the heat exchange plate is prevented from being exposed in the air, and the safety of the battery device is ensured.

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, a buffer support plate is arranged on the surface of the heat exchange plate. However, the edge of the buffer support plate adopts a right-angle structure, which causes stress concentration, resulting in poor structural strength of the buffer support plate. At the same time, the edge of the buffer support plate adopts a right-angle structure and is easily impacted, resulting in damage to the buffer support plate, or even causing the buffer support plate to fall off, exposing the heat exchange plate to the air, endangering the safety 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 with a buffer support plate having better structural strength and being less susceptible to impact.

[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 and a buffer support plate; the heat exchange plate is connected to the box and is used to exchange heat with the battery; the buffer support plate is arranged on a side surface of the heat exchange plate facing away from the battery; wherein a first chamfer structure is provided on an edge of the buffer support plate facing away from the heat exchange plate.

[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 and a buffer support plate. The heat exchange plate is connected to the box body and is used to exchange heat with the battery. The buffer support plate is arranged on the surface of the side of the heat exchange plate facing away from the battery. A first chamfer structure is arranged on the edge of the side of the buffer support plate facing away from the heat exchange plate. Through the above-mentioned structural design, the utility model can utilize the first chamfer structure to alleviate the stress concentration problem of the corresponding part of the buffer support plate, which is beneficial to enhance the structural strength of the buffer support plate. At the same time, due to the adoption of the first chamfer structure, the corresponding part of the buffer support plate is not easily impacted, reducing the risk of damage or even falling off of the buffer support plate, avoiding exposure of the heat exchange plate to the air, and ensuring the safety of the battery device. 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] Figures 4 to 6 They are partial cross-sectional views of heat exchange structures of battery devices according to several other exemplary embodiments.

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

[0014] 100. Box;

[0015] 200.Heat exchange structure;

[0016] 210.Heat exchange plate;

[0017] 2101. First surface;

[0018] 211.Heat exchange unit;

[0019] 212. Connecting part;

[0020] 220. Buffer support plate;

[0021] 221. The first chamfer structure;

[0022] 222. Second chamfer structure;

[0023] 230. Encapsulation layer;

[0024] 231. The first conformal bending structure;

[0025] 232. The second conformal bending structure;

[0026] H0.Height;

[0027] H1. Height;

[0028] H2. Height. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] like Figures 1 to 3As shown, in one embodiment of the utility model, the battery device proposed by the utility model includes a box 100, a battery and a heat exchange structure 200. The battery is arranged in the box 100. The heat exchange structure 200 includes a heat exchange plate 210 and a buffer support plate 220. The heat exchange plate 210 is connected to the box 100 and is used to exchange heat with the battery. The buffer support plate 220 is arranged on a side surface (for example, a first surface 2101) of the heat exchange plate 210 facing away from the battery, and a first chamfer structure 221 is arranged on the edge of the buffer support plate 220 facing away from the heat exchange plate 210. Through the above structural design, the utility model can use the first chamfer structure 221 to alleviate the stress concentration problem of the corresponding part of the buffer support plate 220, which is conducive to enhancing the structural strength of the buffer support plate 220. At the same time, due to the use of the first chamfer structure 221, the corresponding part of the buffer support plate 220 is not easily impacted, reducing the risk of damage or even falling off of the buffer support plate 220, avoiding the heat exchange plate 210 from being exposed to the air, and ensuring the safety of the battery device.

[0033] like Figure 3 As shown, in one embodiment of the present invention, the heat exchange plate 210 has a first surface 2101 (i.e., the surface facing away from the battery) facing the buffer support plate 220, and a reference plane perpendicular to the first surface 2101 is defined. On the reference plane, the height of the orthographic projection of the first chamfered structure 221 (which can be understood with reference to the height H1 shown in the drawings) can account for 0.1 to 0.8 of the height of the orthographic projection of the buffer support plate 220 (which can be understood with reference to the height H0 shown in the drawings), for example, 0.1, 0.2, 0.5, 0.8, etc. Through the above structural design, the present invention can avoid the first chamfered structure 221 being too large, which causes excessive changes in the shape of the buffer support plate 220, and can also avoid the first chamfered structure 221 being too small, which causes its design effect to be not obvious enough.

[0034] like Figure 3 As shown, in one embodiment of the present invention, the first chamfered structure 221 may be a rounded structure. In some embodiments, the first chamfered structure 221 may also be in other structural forms, such as a chamfered structure.

[0035] In one embodiment of the present invention, the buffer support plate 220 may be a honeycomb plate. On this basis, the first chamfer structure 221 may be formed by hot pressing the honeycomb plate. For example, the honeycomb plate may be hot pressed by a resistance hot pressing mold, heated by a resistor, and pressurized by manual or tooling, so that the first chamfer structure 221 is formed at the edge of the honeycomb plate. In some embodiments, the buffer support plate 220 may also be of other types, and other processing techniques may also be selected to form the first chamfer structure 221.

[0036] See also Figure 4, Figure 4 2 is a partial cross-sectional view of another exemplary embodiment of a battery device that can embody the principles of the present invention.

[0037] like Figure 4 As shown, in one embodiment of the present utility model, the heat exchange structure 200 may further include an encapsulation layer 230, and the encapsulation layer 230 is disposed on the surface and side of the buffer support plate 220 facing away from the heat exchange plate 210. The encapsulation layer 230 may be, for example, a composite material such as glass fiber. On this basis, the encapsulation layer 230 has a first conformal bending structure 231 at a position corresponding to the first chamfered structure 221, and the first conformal bending structure 231 matches and fits the shape of the first chamfered structure 221. Through the above structural design, the utility model can use the encapsulation layer 230 to provide protection for the buffer support plate 220, and in particular, can further avoid collision deformation at the edge of the buffer support plate 220.

[0038] See also Figure 5 , Figure 5 A partial cross-sectional view of another exemplary embodiment of a battery device that can embody the principles of the present invention is representatively shown.

[0039] like Figure 5 As shown, in one embodiment of the present invention, the edge of the buffer support plate 220 facing the heat exchange plate 210 may be provided with a second chamfer structure 222. Through the above structural design, the present invention can use the second chamfer structure 222 to increase the surface area of ​​the side of the buffer support plate 220 facing the heat exchange plate 210, without significantly increasing the overall size of the buffer support plate 220 to cause waste and space occupation, and further improve the connection strength between the buffer support plate 220 and the heat exchange plate 210.

[0040] like Figure 5As shown, based on the structural design of the buffer support plate 220 being provided with the second chamfer structure 222, in one embodiment of the present utility model, the heat exchange plate 210 has a first surface 2101 (i.e., the surface facing away from the battery) facing the buffer support plate 220, and a reference plane perpendicular to the first surface 2101 is defined, on which the height of the orthographic projection of the second chamfer structure 222 (which can be understood with reference to the height H2 shown in the accompanying drawings) can account for 0.1 to 0.8 of the height of the orthographic projection of the buffer support plate 220 (which can be understood with reference to the height H0 shown in the accompanying drawings), for example, 0.1, 0.2, 0.5, 0.8, etc. Through the above structural design, the present utility model can avoid the second chamfer structure 222 being too large to cause excessive changes in the shape of the buffer support plate 220, and can also avoid the second chamfer structure 222 being too small to cause its design effect to be not obvious. In addition, it should be understood that when the buffer support plate 220 is simultaneously provided with a first chamfer structure 221 and a second chamfer structure 222, the sum of the heights of the orthographic projections of the first chamfer structure 221 and the second chamfer structure 222 located on the same side should be less than or equal to the height of the orthographic projection of the buffer support plate 220.

[0041] like Figure 5 As shown, based on the structural design of the buffer support plate 220 being provided with the second chamfered structure 222, in one embodiment of the present invention, the second chamfered structure 222 can be a rounded structure. In some embodiments, the second chamfered structure 222 can also adopt other structural forms, such as a chamfered structure.

[0042] Based on the structural design of the buffer support plate 220 with the second chamfer structure 222, in one embodiment of the utility model, the buffer support plate 220 can be a honeycomb plate. On this basis, the second chamfer structure 222 can be formed by hot pressing the honeycomb plate. For example, the honeycomb plate can be specifically hot-pressed by a resistance hot pressing mold, heated by a resistor, and pressurized by manual or tooling, so that the second chamfer structure 222 is formed at the edge of the honeycomb plate. In some embodiments, the buffer support plate 220 can also be of other types, and other processing techniques can also be selected to form the second chamfer structure 222.

[0043] See also Figure 6 , Figure 6 A partial cross-sectional view of a battery device in another exemplary embodiment that can embody the principles of the present invention is representatively shown.

[0044] like Figure 6As shown, in one embodiment of the present invention, still taking the structural design in which the buffer support plate 220 is provided with the first chamfer structure 221 and the second chamfer structure 222 as an example, the heat exchange plate 210 may have a heat exchange portion 211 and a connection 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 connection portion 212 is connected to the box 100, the buffer support plate 220 is arranged on the side surface of the heat exchange portion 211 facing away from the battery, and the buffer support plate 220 is not arranged on the connection portion 212. On this basis, the heat exchange structure 200 may also include an encapsulation layer 230, the encapsulation layer 230 is arranged on the side surface and side of the buffer support plate 220 facing away from the heat exchange plate 210, and the encapsulation layer 230 is also arranged on the side surface of the connection portion 212 facing away from the battery. The encapsulation layer 230 may be, for example, a composite material such as glass fiber. Among them, the encapsulation layer 230 has a first conformal bending structure 231 at a position corresponding to the first chamfer structure 221, and the first conformal bending structure 231 matches and fits with the shape of the first chamfer structure 221, and the encapsulation layer 230 has a second conformal bending structure 232 at a position corresponding to the second chamfer structure 222, and the second conformal bending structure 232 matches and fits with the shape of the second chamfer structure 222. Through the above structural design, the utility model can use the encapsulation layer 230 to provide protection for the buffer support plate 220, especially can further avoid collision deformation at the edge of the buffer support plate 220.

[0045] 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.

[0046] It should be noted that the first chamfer structure 221, the second chamfer structure 222, the first conformal bending structure 231 and the second conformal bending structure 232 shown in the drawings are explained by taking an arc as an example. No matter what shape the chamfer structures are, such as an arc, a slope or other shapes, they are all intentional structural designs for the buffer support plate 220. For example, the chamfer structure can be formed in the molding and manufacturing process of the buffer support plate, or the chamfer structure can be formed by a partial removal process (such as cutting, hot pressing, etc.) after the buffer support plate 220 is formed. In other words, the chamfer structures can all be observed from a macroscopic perspective, and of course, their sizes in different embodiments are not limited. In contrast, from a microscopic perspective, for example, the microstructures at the edge corners of the buffer support plate 220 may have various shapes including angles, slopes, arcs, etc. It should be understood that the shapes from these microscopic perspectives cannot be used as existing structures to limit the present utility model.

[0047] In summary, the heat exchange structure 200 of the battery device proposed in the utility model includes a heat exchange plate 210 and a buffer support plate 220. The heat exchange plate 210 is connected to the box body 100 and is used for heat exchange with the battery. The buffer support plate 220 is arranged on the surface of the side of the heat exchange plate 210 facing away from the battery. A first chamfered structure 221 is arranged on the edge of the buffer support plate 220 facing away from the heat exchange plate 210. Through the above structural design, the utility model can utilize the first chamfered structure 221 to alleviate the stress concentration problem of the corresponding part of the buffer support plate 220, which is beneficial to enhance the structural strength of the buffer support plate 220. At the same time, due to the use of the first chamfered structure 221, the corresponding part of the buffer support plate 220 is not easily impacted, reducing the risk of damage or even falling off of the buffer support plate 220, avoiding the heat exchange plate 210 from being exposed to the air, and ensuring the safety of the battery device.

[0048] 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.

[0049] 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, connected to the box and used for exchanging heat with the battery; and A buffer support plate, arranged on a surface of the heat exchange plate facing away from the battery; Wherein, a first chamfer structure is provided on the edge of the buffer support plate facing away from the heat exchange plate.

2. The battery device according to claim 1, characterized in that: The heat exchange plate has a first surface facing the buffer support plate, and a reference plane perpendicular to the first surface is defined. On the reference plane, the height of the orthographic projection of the first chamfered structure accounts for 0.1 to 0.8 of the height of the orthographic projection of the buffer support plate.

3. The battery device according to claim 1, characterized in that: The first chamfered structure is a rounded structure or a beveled structure.

4. The battery device according to claim 1, characterized in that: The buffer support plate is a honeycomb plate; wherein the first chamfered structure is formed by hot pressing the honeycomb plate.

5. The battery device according to any one of claims 1 to 4, characterized in that: The heat exchange structure also includes a packaging layer, which is arranged on the side surface and side of the buffer support plate facing away from the heat exchange plate. The packaging layer has a first conformal bending structure at a position corresponding to the first chamfer structure, and the first conformal bending structure matches and fits with the shape of the first chamfer structure.

6. The battery device according to claim 1, characterized in that: A second chamfered structure is provided on an edge of the buffer support plate facing the heat exchange plate.

7. The battery device according to claim 6, characterized in that: The heat exchange plate has a first surface facing the buffer support plate, and a reference plane perpendicular to the first surface is defined. On the reference plane, the height of the orthographic projection of the first chamfered structure accounts for 0.1 to 0.5 of the height of the orthographic projection of the buffer support plate, and the height of the orthographic projection of the second chamfered structure accounts for 0.1 to 0.5 of the height of the orthographic projection of the buffer support plate.

8. The battery device according to claim 6, characterized in that: The second chamfered structure is a rounded structure or a beveled structure.

9. The battery device according to claim 6, characterized in that: The buffer support plate is a honeycomb plate; wherein the second chamfered structure is formed by hot pressing the honeycomb plate.

10. The battery device according to any one of claims 6 to 9, characterized in that: The heat exchange plate comprises a heat exchange portion and a connecting portion, the position of the heat exchange portion is arranged corresponding to the position of the battery and is used for exchanging heat with the battery, the connecting portion is connected to the box, the buffer support plate is arranged on a side surface of the heat exchange portion facing away from the battery, and the buffer support plate is not arranged on the connecting portion; wherein, the heat exchange structure also comprises a packaging layer, the packaging layer is arranged on a side surface and a side surface of the buffer support plate facing away from the heat exchange plate, and is also arranged on a side surface of the connecting portion facing away from the battery, the packaging layer has a first conforming bending structure and a second conforming bending structure corresponding to the positions of the first chamfer structure and the second chamfer structure, respectively, the first conforming bending structure matches and fits with the shape of the first chamfer structure, and the second conforming bending structure matches and fits with the shape of the second chamfer structure.

Images