Battery structure

Abstract

A battery structure includes a shell, a battery cell module and a heat dissipation structure, wherein the battery cell module and the heat dissipation structure are accommodated in the shell, and the heat dissipation structure includes a first heat conducting plate; a second heat conducting plate in contact with the first heat conducting plate; and a buffer layer arranged between the first heat conducting plate and the second heat conducting plate; the heat dissipation structure is arranged in the gap between the battery cell module and the shell, and the battery cell module and the shell are supported by the buffer layer, thereby achieving heat dissipation while fixing the battery cell module in the shell.

Description

Technical Field

[0001] The present application relates to a battery structure. Background Art

[0002] Batteries are widely used in daily life due to their advantages, such as high specific energy, high operating voltage, low self-discharge rate, compact size, and light weight. However, in practical applications, due to the shape of the battery casing (e.g., irregular shapes), irregular gaps often exist between the battery cell module and the casing when the battery cell module is installed. These gaps affect the heat dissipation and the fixing of the battery cell module. Summary of the Invention

[0003] In view of the above situation, it is necessary to provide a battery structure that solves the above problems.

[0004] A battery structure includes a housing, a battery cell module, and a heat dissipation structure, wherein the battery cell module and the heat dissipation structure are accommodated in the housing, and the heat dissipation structure includes:

[0005] a first heat conducting plate;

[0006] a second heat conducting plate in contact with the first heat conducting plate; and

[0007] a buffer layer, disposed between the first heat conducting plate and the second heat conducting plate;

[0008] The heat dissipation structure is arranged in the gap between the battery cell module and the shell, and the battery cell module and the shell are supported by the buffer layer, so as to fix the battery cell module in the shell.

[0009] Furthermore, grooves are formed on a surface of the first heat conducting plate facing away from the second heat conducting plate and / or a surface of the second heat conducting plate facing away from the first heat conducting plate.

[0010] Furthermore, the battery structure further includes thermally conductive adhesive, and the thermally conductive adhesive is disposed in the groove.

[0011] Furthermore, each groove is opened from the first end of the first heat conducting plate to the second end opposite to the first end, or from the third end of the second heat conducting plate to the fourth end opposite to the third end; each groove runs through the first end or the third end.

[0012] Furthermore, an end portion of the first heat conducting plate facing away from the buffer layer and an end portion of the second heat conducting plate facing away from the buffer layer are respectively provided with chamfers.

[0013] Furthermore, a first receiving groove is formed on a surface of the first heat conducting plate facing the second heat conducting plate, and the buffer layer is disposed in the first receiving groove.

[0014] Furthermore, a second receiving groove is formed on a surface of the second heat conducting plate facing the first heat conducting plate, and the buffer layer is disposed in the first receiving groove and the second receiving groove.

[0015] Furthermore, the first heat conducting plate includes a first body, a first side portion and a second side portion opposite to the first side portion, the first body, the first side portion and the second side portion are arranged to form the first receiving groove, and the second heat conducting plate is arranged corresponding to the first receiving groove and contacts the first side portion and the second side portion.

[0016] Furthermore, the first heat conducting plate includes a first body, a first side portion and a second side portion opposite to the first side portion, and the first body, the first side portion and the second side portion are arranged to form the first receiving groove; the second heat conducting plate includes a second body, a third side portion and a fourth side portion opposite to the second side portion, and the second body, the third side portion and the fourth side portion are arranged to form the second receiving groove; the first side portion is located in the second receiving groove and contacts the third side portion, and the fourth side portion is located in the first receiving groove and contacts the second side portion.

[0017] Furthermore, the first heat conducting plate and / or the second heat conducting plate are made of elastic heat conducting material.

[0018] The battery structure of the present application is supported between the shell and the battery cell module by the heat dissipation structure, thereby achieving heat dissipation for the battery cell module and fixing the battery cell module in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a battery structure according to an embodiment of the present application.

[0020] Figure 2 This is a structural diagram of the heat dissipation structure of the first embodiment of the present application.

[0021] Figure 3 for Figure 2 The heat dissipation structure shown is a schematic cross-sectional view along the III-III direction.

[0022] Figure 4 2 is a schematic cross-sectional view of the heat dissipation structure of the second embodiment of the present application along the III-III direction.

[0023] Figure 5 2 is a schematic cross-sectional view of the heat dissipation structure of the third embodiment of the present application along the III-III direction.

[0024] Figure 61 is a schematic cross-sectional view of the heat dissipation structure of the fourth embodiment of the present application taken along the VI-VI direction.

[0025] Figure 7 1 is a schematic cross-sectional view of the heat dissipation structure of the fifth embodiment of the present application taken along the VI-VI direction.

[0026] Figure 8 This is a structural diagram of the heat dissipation structure of the fifth embodiment of the present application.

[0027] Figure 9 1 is a schematic cross-sectional view of the heat dissipation structure of the sixth embodiment of the present application taken along the VI-VI direction.

[0028] Description of main component symbols

[0029] Battery structure 100

[0030] Housing 10

[0031] Battery module 20

[0032] Heat dissipation structure 30

[0033] First heat conducting plate 31

[0034] Second heat conducting plate 33

[0035] Buffer layer 35

[0036] First trench 311

[0037] Second groove 331

[0038] First end 313

[0039] Second end 315

[0040] The third end 333

[0041] Fourth end 335

[0042] Thermal conductive adhesive 37

[0043] First receiving slot 319

[0044] First ontology 316

[0045] First side portion 317

[0046] Second side portion 318

[0047] Second receiving slot 339

[0048] Second body 336

[0049] The third side portion 337

[0050] Fourth side portion 338

[0051] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0054] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0055] See also Figures 1 to 9 As shown, the battery structure 100 includes a housing 10 , a battery cell module 20 , and a heat dissipation structure 30 . The battery cell module 20 and the heat dissipation structure 30 are accommodated in the housing 10 .

[0056] The heat dissipation structure 30 includes a first heat conducting plate 31, a second heat conducting plate 33, and a buffer layer 35. The second heat conducting plate 33 contacts the first heat conducting plate 31 to achieve heat conduction. The buffer layer 35 is disposed between the first heat conducting plate 31 and the second heat conducting plate 33.

[0057] The heat dissipation structure 30 is arranged in the gap between the battery cell module 20 and the shell 10, and the battery cell module 20 and the shell 10 are supported by the buffer layer 35, so that the battery cell module 20 is fixed in the shell 10, and the first heat conducting plate 31 and the second heat conducting plate 33 dissipate heat from the battery cell module 20, transfer the heat to the shell 10 and then dissipate it outward.

[0058] In this embodiment, the first heat conducting plate 31 and the second heat conducting plate 33 can be metal plates, such as aluminum plates, copper plates, etc. In other embodiments, the first heat conducting plate 31 and the second heat conducting plate 33 can also be made of other heat conducting materials, such as elastic heat conducting materials such as heat conducting polymer materials.

[0059] The buffer layer 35 is elastic, that is, it can deform under the action of external force and return to its original shape after the external force is removed. In this embodiment, the buffer layer 35 is made of rubber. Preferably, the buffer layer 35 is made of thermally conductive rubber material.

[0060] In this embodiment, the first heat conducting plate 31 contacts the housing 10, and the second heat conducting plate 33 contacts the battery module 20. In some embodiments, the first heat conducting plate may contact the battery module 20, and the second heat conducting plate 33 may contact the housing 10.

[0061] The battery structure 100 of the present application is further described below through examples.

[0062] First embodiment

[0063] See also Figure 1 A first groove 311 is provided on the surface of the first heat conducting plate 31 facing away from the second heat conducting plate 33, and / or a second groove 331 is provided on the surface of the second heat conducting plate 33 facing away from the first heat conducting plate 31, thereby reducing the contact between the first heat conducting plate 31 and the second heat conducting plate 33 and the shell 10 and the battery module 20 when the heat dissipation structure 30 is installed between the shell 10 and the battery module 20, thereby facilitating the installation of the heat dissipation structure 30.

[0064] Figure 2 and Figure 3 An embodiment of the present application is shown, wherein the first heat conducting plate 31 includes a first end 313 and a second end 315 opposite to the first end 313. The first groove 311 extends from the first end 313 to the second end 315, and the first groove 311 passes through the first end 313. The second heat conducting plate 33 includes a third end 333 and a fourth end 335 opposite to the third end 333. The second groove 331 extends from the third end 333 to the fourth end 335, and the second groove 331 passes through the third end 333.

[0065] In some embodiments, the first groove 311 may not pass through the first end 313, and the second groove 331 may not pass through the third end 333. In some embodiments, the first groove 311 and the second groove 331 may also be opened along other directions.

[0066] In this embodiment, the first groove 311 is arc-shaped at the first end 313, and the second groove 331 is arc-shaped at the third end 333. In some embodiments, the first groove 311 at the first end 313 and the second groove 331 at the third end 333 may also be rectangular, V-shaped, or any other shape.

[0067] In this embodiment, there are a plurality of first grooves 311 disposed in parallel and at intervals, and a plurality of second grooves 331 disposed in parallel and at intervals. Each first groove 311 is correspondingly disposed with a second groove 331 .

[0068] Second embodiment

[0069] See also Figure 4 The difference between the second embodiment and the first embodiment is that each of the first grooves 311 is set corresponding to the gap between two adjacent second grooves 331, and each of the second grooves 331 is set corresponding to the gap between two adjacent first grooves 311.

[0070] Third embodiment

[0071] See also Figure 5 The difference between the third embodiment and the first embodiment is that the battery structure 100 further includes a thermally conductive adhesive 37 , and the thermally conductive adhesive 37 is disposed in the first groove 311 and / or the second groove 331 .

[0072] Figure 5 An embodiment of the present application is shown, in which the thermal conductive adhesive 37 fills the first groove 311 and the second groove 331 .

[0073] In this embodiment, after the heat dissipation structure 30 is located between the shell 10 and the battery module 20, the raw material of the thermal conductive adhesive 37 is poured into the first groove 311 and / or the second groove 331 to form the thermal conductive adhesive 37. This facilitates the installation of the heat dissipation structure 30 between the shell 10 and the battery module 20, and can also increase the conduction area through the thermal conductive adhesive 37, thereby enhancing the heat dissipation effect, and can also increase the contact strength between the heat dissipation structure 30 and the shell 10 and / or the battery module 20.

[0074] Fourth embodiment

[0075] See also Figure 6 The difference between the fourth embodiment and the third embodiment is that the end of the first heat conducting plate 31 facing away from the buffer layer 35 and / or the end of the second heat conducting plate 33 facing away from the buffer layer 35 are chamfered.

[0076] Specifically, in this embodiment, a chamfer is provided between the surface of the first heat conducting plate 31 facing away from the buffer layer 35 and the second end 315, and a chamfer is provided between the surface of the second heat conducting plate 33 facing away from the buffer layer 35 and the fourth end 335, thereby facilitating the installation of the heat dissipation structure 30 between the shell 10 and the battery cell module 20.

[0077] In some embodiments, a chamfer (not shown) may be provided between the surface of the first heat conducting plate 31 facing away from the buffer layer 35 and the first end 313 , and a chamfer (not shown) may be provided between the surface of the second heat conducting plate 33 facing away from the buffer layer 35 and the third end 333 , thereby facilitating the removal of the heat dissipation structure 30 from between the shell 10 and the battery cell module 20 .

[0078] Fifth embodiment

[0079] See also Figure 7 The difference between the fifth embodiment and the fourth embodiment is that a first receiving groove 319 may be further provided on the surface of the first heat conducting plate 31 facing the second heat conducting plate 33 , and the buffer layer 35 is disposed in the first receiving groove 319 .

[0080] Specifically, the first heat conducting plate 31 includes a first body 316 , a first side portion 317 and a second side portion 318 opposite to the first side portion 317 . The first body 316 , the first side portion 317 and the second side portion 318 surround and form the first receiving groove 319 .

[0081] The second heat conducting plate 33 is arranged on the side of the buffer layer 35 away from the first body 316 corresponding to the first receiving groove 319, and when the heat dissipation structure 30 is arranged between the shell 10 and the battery module 20, the buffer layer 35 is compressed, and the second heat conducting plate 33 contacts the first side 317 and the second side 318.

[0082] Sixth embodiment

[0083] See also Figure 8 The difference between the sixth embodiment and the fifth embodiment is that a second receiving groove 339 may be further provided on the surface of the second heat conducting plate 33 facing the first heat conducting plate 31 , and the buffer layer 35 is arranged in the first receiving groove 319 and the second receiving groove 339 .

[0084] Specifically, the second heat conducting plate 33 includes a second body 336 , a third side portion 337 and a fourth side portion 338 opposite to the third side portion 337 . The second body 336 , the third side portion 337 and the fourth side portion 338 surround and form the second receiving groove 339 .

[0085] The second heat conducting plate 33 is disposed corresponding to the first receiving groove 319 . The third side portion 337 and the fourth side portion 338 are located in the first receiving groove 319 . The third side portion 337 contacts the first side portion 317 , and the fourth side portion 338 contacts the second side portion 318 .

[0086] Seventh embodiment

[0087] See also Figure 9 The difference between the seventh embodiment and the sixth embodiment is that the first side portion 317 is located in the second receiving groove 339 and contacts the third side portion 337, and the fourth side portion 338 is located in the first receiving groove 319 and contacts the second side portion 318.

[0088] The battery structure 100 of the present application is supported between the housing 10 and the battery cell module 20 by the heat dissipation structure 30 , thereby achieving heat dissipation for the battery cell module 20 while also fixing the battery cell module 20 in the housing 10 .

[0089] In addition, those skilled in the art can make various other corresponding changes and modifications based on the technical concept of this application, and all these changes and modifications should fall within the scope of protection of the claims of this application.

Claims

1. A battery structure comprising a housing, a battery module and a heat dissipation structure, wherein the battery module and the heat dissipation structure are accommodated in the housing, and the housing surrounds the battery module and the heat dissipation structure, characterized in that: The heat dissipation structure includes: a first heat conducting plate; a second heat conducting plate in contact with the first heat conducting plate; and a buffer layer, disposed between the first heat conducting plate and the second heat conducting plate, the buffer layer being made of a heat conducting rubber material; A groove is formed on a surface of the first heat conducting plate facing away from the second heat conducting plate and / or a surface of the second heat conducting plate facing away from the first heat conducting plate. The battery structure further includes a thermally conductive adhesive disposed in the groove. The thermally conductive adhesive is configured such that, after the heat dissipation structure is positioned between the housing and the battery cell module, a raw material of the thermally conductive adhesive is poured into the groove. The heat dissipation structure is arranged in the gap between the battery cell module and the shell, and the battery cell module and the shell are supported by the buffer layer, so as to fix the battery cell module in the shell.

2. The battery structure according to claim 1, wherein: Each groove is opened from the first end of the first heat conducting plate to the second end opposite to the first end, or from the third end of the second heat conducting plate to the fourth end opposite to the third end; each groove runs through the first end or the third end.

3. The battery structure according to claim 1, wherein: An end portion of the first heat conducting plate facing away from the buffer layer and an end portion of the second heat conducting plate facing away from the buffer layer are respectively chamfered.

4. The battery structure according to claim 1, wherein: A first receiving groove is formed on a surface of the first heat conducting plate facing the second heat conducting plate, and the buffer layer is disposed in the first receiving groove.

5. The battery structure according to claim 4, wherein: A second receiving groove is formed on a surface of the second heat conducting plate facing the first heat conducting plate, and the buffer layer is disposed in the first receiving groove and the second receiving groove.

6. The battery structure according to claim 5, wherein: The first heat conducting plate includes a first body, a first side portion and a second side portion opposite to the first side portion. The first body, the first side portion and the second side portion are arranged to form the first receiving groove. The second heat conducting plate is arranged corresponding to the first receiving groove and contacts the first side portion and the second side portion.

7. The battery structure according to claim 5, wherein: The first heat conducting plate includes a first body, a first side portion and a second side portion opposite to the first side portion, and the first body, the first side portion and the second side portion are arranged to form the first receiving groove; the second heat conducting plate includes a second body, a third side portion and a fourth side portion opposite to the second side portion, and the second body, the third side portion and the fourth side portion are arranged to form the second receiving groove; the first side portion is located in the second receiving groove and contacts the third side portion, and the fourth side portion is located in the first receiving groove and contacts the second side portion.

8. The battery structure according to claim 1, wherein: The first heat conducting plate and / or the second heat conducting plate are made of elastic heat conducting material.

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