End plate structure and battery module

Abstract

The utility model provides an end plate structure and a battery module, the end plate structure comprises an end plate, the end plate comprises a main body part and a supporting part which are oppositely arranged in a first direction, the main body part and the supporting part are formed by bending the end plate, and the main body part is configured to face a battery; wherein the end plate is provided with a main body part and a supporting part which are oppositely arranged in a first direction after being bent, so that the structural rigidity of the end plate can be improved, and the end plate can play a role in fixing and pre-tightening a battery in the battery module; wherein the end plate is formed by bending, and the end plate can be bent according to the battery modules with different sizes, so that the end plate can be applied to fixation of the battery modules with different sizes, and the manufacturing cost of the end plate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery technical field, concretely relates to a kind of end plate structure and battery module. BACKGROUND

[0002] Battery module is the important component of electric power energy storage battery, and end plate is the key component of battery module, battery module is respectively provided with end plate in head and tail two sides, end plate can play the role of fixed and pre-tightening force to battery module;In the related art, module end plate is mainly integrally pressure casting or aluminum extrusion forming by pressure casting die, when making different size module, different die needs to be developed, so that the cost of end plate is higher. SUMMARY

[0003] The embodiment of the utility model provides a kind of end plate structure and battery module, which can reduce the manufacturing cost of battery end plate.

[0004] In the first aspect, the embodiment of the utility model provides an end plate structure, including end plate, the end plate includes the main part and support part oppositely arranged in the first direction, and the main part and support part are bent to form the end plate;

[0005] Wherein, the main part is configured to be towards battery.

[0006] In some embodiments, the support part includes at least one first sub-part.

[0007] The first sub-part is connected to one end of the main part in the second direction, and the first direction intersects the second direction.

[0008] In some embodiments, the support part includes at least one second sub-part.

[0009] The second sub-part is connected to one end of the main part in the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0010] In some embodiments, the number of first sub-parts is two, and the second sub-part is located between the two first sub-parts.

[0011] The number of second sub-parts is two, and the first sub-part is located between the two second sub-parts.

[0012] In some embodiments, the first sub-part and the adjacent second sub-part are in contact with each other or are spaced apart from each other.

[0013] In some embodiments, in the first direction, the perpendicular distance from the first sub-part to the main part is equal to the perpendicular distance from the second sub-part to the main part.

[0014] In some embodiments, the end plate further includes a first connecting part located between the main part and the support part, and connecting the main part and the support part.

[0015] The main body part, the first connecting part and the supporting part are integrally formed.

[0016] In some embodiments, the end plate further comprises a second connecting part connecting the main body part and the supporting part away from one end of the first connecting part.

[0017] In some embodiments, the end plate structure further comprises at least one sleeve.

[0018] The sleeve is hollow and penetrates the first connecting part in the second direction.

[0019] In some embodiments, the end plate structure further comprises at least one limiting part connected to the supporting part and located on a side of the supporting part away from the main body part in the first direction.

[0020] The limiting part is configured to limit the position of the steel belt on the supporting part.

[0021] In some embodiments, the limiting part comprises two limiting sub-parts spaced apart in the second direction, both of which are connected to the supporting part, and the first direction intersects the second direction.

[0022] The perpendicular distance of the two limiting sub-parts in the second direction is defined as L; wherein L satisfies: 15mm≤L≤50mm.

[0023] In some embodiments, the side of the supporting part away from the main body part in the first direction is further provided with a hoisting hole configured to be connected with hoisting equipment.

[0024] In some embodiments, the end plate is a sheet metal end plate.

[0025] In a second aspect, the application provides a battery module comprising the end plate structure.

[0026] The beneficial effects of the embodiments of the application are as follows:

[0027] The end plate structure provided by the embodiments of the application comprises an end plate, at least part of the edge of the end plate is bent towards the first direction to form a main body part and a supporting part oppositely arranged in the first direction, the supporting part is arranged spaced apart from or in contact with the main body part, and the main body part is configured to face the battery; that is, in the technical solution of the application, the end plate has the main body part and the supporting part oppositely arranged in the first direction after being bent, so as to improve the structural rigidity of the end plate, so that the end plate can fix and pre-tighten the battery in the battery module; wherein, since the end plate is bent, the end plate can be bent according to battery modules of different sizes, so as to be applied to the fixation of battery modules of different sizes, thereby reducing the manufacturing cost of the end plate. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those skilled in the art without creative efforts based on these drawings also belong to the protection scope of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the positional words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and the specific direction is the direction of the drawing surface in the drawings. And "inner" and "outer" are relative to the outline of the device.

[0029] Figure 1 is a perspective view of the end plate structure provided by the embodiment of the present application;

[0030] Figure 2 is a cross-sectional view of the end plate structure provided by the embodiment of the present application;

[0031] Figure 3 is another perspective view of the end plate structure provided by the embodiment of the present application;

[0032] Figure 4 is another perspective view of the end plate structure provided by the embodiment of the present application;

[0033] Figure 5 is a structural view of the end plate structure provided by the embodiment of the present application.

[0034] Explanation of reference signs:

[0035] 1, end plate; 11, main body part; 12, support part; 121, first sub-part; 122, second sub-part; 3, first connecting part; 31, first sub-connecting part; 32, second sub-connecting part; 4, second connecting part; 41, third sub-connecting part; 42, fourth sub-connecting part; 5, sleeve; 6, limiting part; 61, limiting sub-part; 7, hoisting hole. DETAILED DESCRIPTION

[0036] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, in the absence of the opposite description, the positional words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and the specific direction is the direction of the drawing surface in the drawings. And "inner" and "outer" are relative to the outline of the device.

[0037] The present application provides an end plate structure, Figures 1 to 5For some embodiments of the present application. Among them, as shown by the direction mark in the drawing, the Y direction in the drawing is the first direction, the Z direction is the second direction, and the X direction is the third direction. The first direction intersects the second direction, and both the first direction and the second direction are perpendicular to the third direction. In order to facilitate understanding, the first direction Y, the second direction Z and the third direction X are stated and explained in the following embodiments.

[0038] Please refer to Figures 1 to 3 In some embodiments of the present application, the end plate structure includes an end plate 1, the end plate 1 includes a main body part 11 and a support part 12 oppositely arranged in the first direction Y, the main body part 11 and the support part 12 are formed by bending the end plate 1, and the main body part 11 is configured to face the battery; wherein the end plate 1 is formed by a bending process, so that different sizes of end plates 1 can be bent according to different sizes of battery modules, so as to reduce the manufacturing cost of the end plate 1.

[0039] In the technical solution of the present application, the end plate 1 has a main body part 11 and a support part 12 oppositely arranged in the first direction Y after bending, so as to improve the structural rigidity of the end plate 1, so that the end plate 1 can fix and pre-tighten the battery in the battery module; wherein since the end plate 1 is formed by bending, the end plate 1 can be bent according to different sizes of battery modules, so as to be applied to the fixation of battery modules of different sizes, thereby reducing the manufacturing cost of the end plate 1.

[0040] It can be understood that the main body part 11 and the support part 12 formed after bending can be arranged at a distance from each other in the first direction Y, or can be arranged in contact with each other, which is not limited herein; and since the end plate 1 includes the main body part 11 and the support part 12, the anti-deformation ability of the end plate 1 in the first direction Y is improved.

[0041] In some embodiments of the present application, the support part 12 includes at least one first sub-part 121; the first sub-part 121 is connected to one end of the main body part 11 in the second direction Z; that is, in this embodiment, one end of the end plate 1 in the second direction Z is bent to form a first sub-part 121 and a main body part 11 oppositely arranged in the first direction Y, and the part of the end plate 1 on which the first sub-part 121 is arranged has high structural rigidity.

[0042] In some embodiments of the present application, both ends of the end plate 1 in the second direction Z are bent towards the first direction Y to form two first sub-parts 121, so as to improve the structural rigidity of the end plate 1.

[0043] In an embodiment of the present application, the two first sub-parts 121 can be in contact with each other in the second direction Z; in another embodiment of the present application, the two first sub-parts 121 are spaced apart from each other in the second direction Z.

[0044] In the embodiment in which the two first sub-sections 121 contact each other in the second direction Z, the two first sub-sections 121 can also be welded to each other to improve the deformation resistance of the end plate 1.

[0045] In some embodiments of the present application, the support section 12 comprises a second sub-section 122; the second sub-section 122 is connected to one end of the main body section 11 in the third direction X; that is, in this embodiment, one end of the end plate 1 is bent to form the second sub-section 122 and the main body section 11 which are oppositely arranged in the first direction Y, wherein the structure of the part of the end plate 1 on which the second sub-section 122 is arranged has higher rigidity.

[0046] In some embodiments of the present application, both ends of the end plate 1 in the third direction X are bent towards the first direction Y to form two second sub-sections 122 to improve the structural rigidity of the end plate 1.

[0047] In some embodiments of the present application, the two second sub-sections 122 can contact each other in the third direction X; in another embodiment of the present application, the two first sub-sections 121 are spaced apart from each other in the third direction X.

[0048] In the embodiment in which the two second sub-sections 122 contact each other in the third direction X, the two second sub-sections 122 can also be welded to each other to improve the deformation resistance of the end plate 1.

[0049] In addition, since the end plate 1 is bent to form the first sub-section 121 at both ends in the second direction Z and is bent to form the second sub-section 122 at both ends in the third direction X, that is, to avoid interference between the first sub-section 121 and the second sub-section 122 after being bent, in the embodiments of the present application, the size of the first sub-section 121 and the second sub-section 122 after being bent can be adaptively adjusted.

[0050] In some embodiments of the present application, the number of first sub-sections 121 is two, and the second sub-section 122 is located between the two first sub-sections 121; that is, in this embodiment, the second sub-section 122 is located between the two first sub-sections 121 to avoid interference between the first sub-section 121 and the second sub-section 122.

[0051] In some embodiments of the present application, the number of second sub-sections 122 is two, and both of the second sub-sections 122 are located between the two first sub-sections 121.

[0052] Please refer again to Figure 1 In some embodiments of the present application, the number of second sub-sections 122 is two, and the first sub-section 121 is located between the two second sub-sections 122; that is, in this embodiment, the first sub-section 121 is located between the two second sub-sections 122 to avoid interference between the first sub-section 121 and the second sub-section 122. In some embodiments of the present application, the number of second sub-sections 122 is two, and the first sub-section 121 is located between the two second sub-sections 122; that is, in this embodiment, the first sub-section 121 is located between the two second sub-sections 122 to avoid interference between the first sub-section 121 and the second sub-section 122.

[0053] In some embodiments of the present application, two first sub-sections 121 are provided, and both of the first sub-sections 121 are located between two second sub-sections 122.

[0054] In some embodiments of the present application, since the first sub-section 121 and the second sub-section 122 are both located on one side of the main body section 11 in the first direction Y, the first sub-section 121 can be arranged to contact or be spaced apart from the adjacent second sub-section 122 according to the actual bending.

[0055] In some embodiments of the present application, the first sub-section 121 and the adjacent second sub-section 122 are in contact and welded with each other, so as to enhance the structural rigidity of the end plate 1.

[0056] Please refer to Figure 2 In some embodiments of the present application, in the first direction Y, the vertical distance from the first sub-section 121 to the main body section 11 is equal to the vertical distance from the second sub-section 122 to the main body section 11; such an arrangement is to facilitate the steel belt for fixing the battery module to be in close contact with the support section 12 of the end plate 1, so as to reduce the possibility of the steel belt coming off in the battery module.

[0057] Please refer to Figures 1 to 3 In some embodiments of the present application, the end plate 1 further comprises a first connecting section 3, which is located between the main body section 11 and the support section 12 and connects the main body section 11 and the support section 12, and the main body section 11, the first connecting section 3 and the support section 12 are integrally formed, that is, the end plate 1 can form the main body section 11, the first connecting section 3 and the support section 12 connected with each other after being bent; in this embodiment, the support section 12 is spaced apart from the main body section 11 in the first direction Y, and the structure of the first connecting section 3 is arranged so that the end plate 1 has a certain thickness in the first direction Y, thereby enhancing the structural rigidity of the end plate 1.

[0058] In some embodiments of the present application, the first connecting section 3 comprises a first sub-connecting section 31, which is located between the main body section 11 and the first sub-section 121 and connects the main body section 11 and the first sub-section 121; in this embodiment, the first sub-section 121 is spaced apart from the main body section 11 in the first direction Y, and the structure of the first sub-connecting section 31 is arranged so that the end plate 1 has a certain thickness in the first direction Y, thereby enhancing the structural rigidity of the end plate 1.

[0059] In this embodiment, the first sub-connecting section 31 is connected with one end of the first sub-section 121 in the second direction Z.

[0060] In some embodiments of the present application, the first connecting portion 3 comprises a second sub-connecting portion 32, which is located between the main body portion 11 and the second sub-portion 122 and connects the main body portion 11 and the second sub-portion 122; that is, in this embodiment, the second sub-portion 122 is arranged apart from the main body portion 11 in the first direction Y, and the second sub-connecting portion 32 is arranged in such a structure that the end plate 1 has a certain thickness in the first direction Y, thereby enhancing the structural strength of the end plate 1.

[0061] In this embodiment, the second sub-connecting portion 32 is connected to one end of the second sub-portion 122 in the third direction X.

[0062] In some embodiments of the present application, the first sub-connecting portion 31 has a dimension in the third direction X that is greater than the dimension of the first sub-portion 121 in the third direction X, thereby sealing the gap between the second sub-portion 122 and the main body portion 11.

[0063] Meanwhile, the first sub-connecting portion 31 can be welded to both the second sub-connecting portion and the second sub-portion 122, so as to enhance the structural strength of the end plate 1.

[0064] In some embodiments of the present application, the end plate 1 further comprises a second connecting portion 4, which connects the main body portion 11 and the support portion 12 away from one end of the first connecting portion 3; that is, in this embodiment, the second connecting portion 4 and the first connecting portion 3 jointly support the opposite ends of the support portion 12, so as to avoid the support portion 12 from easily moving towards the main body portion 11 in the first direction Y when the end plate 1 is subjected to an external force in the first direction Y, thereby enhancing the structural rigidity of the end plate 1.

[0065] In some embodiments of the present application, the second connecting portion 4 comprises a third sub-connecting portion 41, which is located between the main body portion 11 and the first sub-portion 121; wherein the third sub-connecting portion 41 connects the main body portion 11 and the first sub-portion 121 away from one end of the first sub-connecting portion 31; that is, in this embodiment, the third sub-connecting portion 41 and the first sub-connecting portion 31 jointly support the two ends of the first sub-portion 121 in the second direction Z, so as to avoid the first sub-portion 121 from easily moving towards the main body portion 11 in the first direction Y when the end plate 1 is subjected to an external force in the first direction Y, thereby enhancing the structural rigidity of the end plate 1.

[0066] In one embodiment of the present application, the third sub-connecting portion 41 is integrally formed with the main body portion 11 and is in contact with and welded to one end of the first sub-portion 121 in the second direction Z, so as to enhance the structural rigidity of the end plate 1; in another embodiment of the present application, the third sub-connecting portion 41 is integrally formed with the first sub-portion 121 and is in contact with and welded to the main body portion 11, so as to enhance the structural rigidity of the end plate 1.

[0067] In some embodiments of the present application, the second connecting portion 4 comprises a fourth sub-connecting portion 42, which is located between the main body portion 11 and the second sub-portion 122; wherein the fourth sub-connecting portion 42 connects the main body portion 11 and the second sub-portion 122 away from one end of the second sub-connecting portion 32; that is, in this embodiment, the fourth sub-connecting portion 42 and the second sub-connecting portion 32 jointly support both ends of the second sub-portion 122 in the third direction X, so as to avoid the second sub-portion 122 from easily moving towards the main body portion 11 in the first direction Y when the end plate 1 is subjected to an external force in the first direction Y, thereby enhancing the structural rigidity of the end plate 1.

[0068] In an embodiment of the present application, the second sub-connecting portion 32 is integrally formed with the main body portion 11, and is in contact with and welded to one end of the second sub-portion 122 in the third direction X, so as to improve the structural strength of the end plate 1; in another embodiment of the present application, the second sub-connecting portion 32 is integrally formed with the second sub-portion 122, and is in contact with and welded to the main body portion 11, so as to improve the structural strength of the end plate 1.

[0069] Please refer to Figure 4 In some embodiments of the present application, the end plate structure further comprises at least one sleeve 5, which is hollow and extends through the first connecting portion 3 in the second direction Z; wherein the sleeve 5 is configured to pass through a bolt, so that the end plate 1 can be fixed in the battery pack, and by providing the sleeve 5, the stability of the end plate 1 fixed in the battery pack is improved.

[0070] In some embodiments of the present application, the sleeve 5 is hollow and extends through the first sub-connecting portion 31 in the second direction Z; wherein the sleeve 5 is configured to pass through a bolt, so that the end plate 1 can be fixed in the battery pack, and by providing the sleeve 5, the stability of the end plate 1 fixed in the battery pack is improved.

[0071] Wherein the sleeve 5 extends in the second direction Z and is welded to both first sub-connecting portions 31.

[0072] It should be noted that, since the second sub-portion 122 is spaced apart from the main body portion 11 in the first direction Y, the structural arrangement of the second sub-portion 122 does not interfere with the installation of the sleeve 5.

[0073] In some embodiments of the present application, the first sub-connecting portion 31, the second sub-connecting portion 32, the fourth sub-connecting portion 42, and the second sub-portion 122 are arranged around the sleeve 5, so as to improve the aesthetics of the end plate 1, and at the same time avoid the sleeve 5 from being exposed in the external environment and causing damage.

[0074] In some embodiments of the present application, the end plate structure further comprises at least one limiting portion 6, the limiting portion 6 is connected with the supporting portion 12 and located on the side of the supporting portion 12 away from the main body portion 11 in the first direction Y; the limiting portion 6 is configured to limit the position of the steel belt on the supporting portion 12; that is, the limiting portion 6 can prevent the steel belt from falling off the end plate 1.

[0075] Please refer to Figure 5 In some embodiments of the present application, the limiting portion 6 comprises two limiting sub-portions 61 spaced apart in the second direction Z, and the vertical distance between the two limiting sub-portions 61 in the second direction Z is defined as L; wherein L satisfies: 15mm≤L≤50mm; wherein the vertical distance L between the two limiting sub-portions 61 in the second direction Z satisfies this interval range, so that the two limiting sub-portions 61 can limit the steel belt in the second direction Z, thereby preventing the steel belt from falling off the end plate 1.

[0076] If L is less than 15mm, the spacing between the two limiting sub-portions 61 is insufficient to accommodate the steel belt; if L is greater than 50mm, the spacing between the two limiting sub-portions 61 is too large, and the movement distance of the steel belt between the two limiting sub-portions 61 is too large, which cannot ensure the stability of the steel belt fastening the battery module.

[0077] In some embodiments of the present application, four limiting portions 6 are provided, and two limiting portions 6 are provided on one first sub-portion 121, and the two limiting portions 6 are spaced apart in the third direction X to prevent the steel belt from falling off the end plate 1.

[0078] In some embodiments of the present application, the side of the supporting portion 12 away from the main body portion 11 in the first direction Y is further provided with a lifting hole 7; by providing the lifting hole 7, the lifting equipment can lift the battery module, thereby realizing the automatic installation of the battery module.

[0079] In some embodiments of the present application, two lifting holes 7 are provided, and the two lifting holes 7 are spaced apart in the third direction X; wherein the two lifting holes 7 are respectively provided on the second sub-portion 122.

[0080] In some embodiments of the present application, the end plate 1 is a sheet metal end plate, which is bent and welded to be able to be bent according to different sizes of battery modules, thereby being suitable for fixing battery modules of different sizes to reduce the manufacturing cost of the end plate 1.

[0081] The present application also proposes a battery module, which comprises an end plate structure as described above. Since the battery module adopts all the technical solutions of the above-mentioned embodiments, it at least has the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0082] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been described in this article by applying specific examples, the above embodiment explanation is only for helping understanding the method and its core thought of the utility model; simultaneously, for the technical personnel in the art, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above is described, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. An end plate structure characterized by, The end plate comprises a body portion and a support portion oppositely arranged in a first direction, the body portion and the support portion being bent to form the end plate; The body portion is configured to face the battery.

2. The end plate structure of claim 1, wherein The support portion comprises at least one first sub-portion; The first sub-portion is connected to one end of the body portion in a second direction, the first direction intersecting the second direction.

3. The end plate structure of claim 2, wherein The support portion comprises at least one second sub-portion; The second sub-portion is connected to one end of the body portion in a third direction, the third direction being perpendicular to the first direction and the second direction.

4. The end plate structure of claim 3, wherein The number of the first sub-portions is two, and the second sub-portion is located between the two first sub-portions; or The number of the second sub-portions is two, and the first sub-portion is located between the two second sub-portions.

5. The end plate structure of claim 3, wherein The first sub-portion and the adjacent second sub-portion are arranged in contact with each other or are arranged in spacing from each other.

6. The end plate structure of claim 3, wherein In the first direction, the vertical distance from the first sub-portion to the body portion is equal to the vertical distance from the second sub-portion to the body portion.

7. The end plate structure according to any one of claims 1 to 6, characterized by The end plate further comprises a first connecting portion located between the body portion and the support portion and connecting the body portion and the support portion; The body portion, the first connecting portion, and the support portion are integrally formed.

8. The end plate structure of claim 7, wherein The end plate further comprises a second connecting portion connecting one end of the body portion and the support portion away from the first connecting portion.

9. The end plate structure of claim 7, wherein The end plate structure further comprises at least one sleeve; The sleeve is hollow and penetrates the first connecting portion in the second direction.

10. The end plate structure according to any one of claims 1 to 6, characterized by The end plate structure further comprises at least one limiting portion connected to the support portion and located on a side of the support portion away from the body portion in the first direction; The limiting portion is configured to limit the position of the steel belt on the support portion.

11. The end plate structure of claim 10, wherein The limiting portion comprises two limiting sub-portions arranged in spacing in the second direction, both of which are connected to the support portion, the first direction intersecting the second direction; The vertical distance of the two limiting sub-portions in the second direction is defined as L; wherein the L satisfies: 15mm≤L≤50mm.

12. An end plate structure as claimed in any one of claims 1 to 6, characterized in that The side of the support portion away from the body portion in the first direction is further provided with a lifting hole configured to be connected to a lifting device.

13. An end plate structure as claimed in any one of claims 1 to 6, characterized in that The end plate is a sheet metal end plate.

14. A battery module, characterized by The end plate structure comprises the end plate according to any one of claims 1 to 13.

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