Battery module and energy storage system
By designing the first fixed component in the battery module to wear a fixed hole set in the battery component and fix it on the side wall of the shell, the problem of collision with the shell during the transportation or transportation of the battery component improves the battery cell, and the battery cell is improved. The safety performance of the component.
Patent Information
- Application Number
- CN202420653365.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-30
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-03-30
AI Technical Summary
During the handling or transportation of existing battery modules, the battery cell assembly is prone to collision with the shell, resulting in damage to the battery cell assembly and affecting the safety of the battery module.
Design a battery module, including a casing, a battery core assembly and a first fixing component. The battery core component is provided with a first fixing hole. The casing includes a first side wall and a second side wall. The first fixing component is inserted through The first fixing hole is fixed on the first side wall to reduce the collision between the battery component and the casing.
By reducing the collision between the battery core assembly and the casing, the risk of damage to the battery core assembly is reduced and the safety performance of the battery core assembly is improved.
Smart Images
Figure CN222394957U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the utility model relate to the field of energy storage technology, and in particular to a battery module and an energy storage system. Background Art
[0002] An existing battery module generally includes a shell and a cell assembly. The cell assembly is placed in the shell, and the shell is used to protect the cell assembly. However, the cell assembly is directly placed in the shell and is not fixed to the shell. During handling or transportation, the cell assembly is prone to collide with the shell, which may cause damage to the cell assembly and affect the safety of the battery module. Utility Model Content
[0003] The technical problem mainly solved by the embodiments of the utility model is to provide a battery assembly and an energy storage system, which can reduce the collision between the battery cell assembly and the shell, thereby reducing the risk of damage to the battery cell assembly and improving the safety performance of the battery cell assembly.
[0004] In order to solve the above technical problems, a technical solution adopted in an embodiment of the utility model is: to provide a battery module, including a shell, a battery cell assembly and a first fixing assembly, the battery cell assembly and the first fixing assembly are accommodated in the shell, the battery cell assembly is provided with a first fixing hole, the shell includes a first side wall and a second side wall arranged opposite to each other along a first direction, the first fixing assembly is arranged in the first fixing hole, and the first fixing assembly fixes the first side wall and the battery cell assembly. In this embodiment, by inserting the first fixing assembly into the first fixing hole and fixing the first fixing assembly to the first side wall, it is helpful to reduce the collision between the battery cell assembly and the shell, thereby reducing the risk of damage to the battery cell assembly and improving the safety performance of the battery cell assembly.
[0005] In one or more / any one of the above optional embodiments, the shell includes a top wall and a bottom wall arranged relatively to each other along a second direction, a receiving space is formed between the top wall and the battery cell assembly, and the second direction is perpendicular to the first direction; the battery module includes a wiring harness, which is electrically connected to the battery cell assembly, and the wiring harness is at least partially received in the receiving space.
[0006] In this embodiment, by forming a receiving space between the top wall and the battery cell assembly, components such as a circuit board or a wiring harness can be arranged in the receiving space, which is conducive to improving the flexibility of the layout of various components (such as circuit boards and wiring harnesses) in the housing. The first fixing component is fixed to the first side wall, reducing the space occupied by the first fixing component in the receiving space.
[0007] In one or more / any one of the above optional embodiments, the first fixing assembly includes a first connecting member and a first fastener, the first connecting member is fixed to the first side wall, and the first fastener is passed through the first fixing hole and fixed to the first connecting member. In this embodiment, the first connecting member is fixed to the first side wall, and then the battery cell assembly is fixed to the first connecting member by the first fastener, which is simple to operate.
[0008] In one or more / any one of the above optional embodiments, the first fixing assembly includes a first nut, the first connecting member is provided with a first through hole, the first fastener is sequentially passed through the first fixing hole and the first through hole, and the first fastener is fixed to the first nut.
[0009] In one or more / any one of the above optional embodiments, the first connecting member includes a first main body portion and a first fixing portion, the first fixing portion is fixed to the first side wall, the first fixing portion is connected to the first main body portion, and the first fixing hole is provided in the first main body portion.
[0010] In one or more / any one of the above optional embodiments, a gap is formed between the first main body and the first side wall, and part of the first fastener is located in the gap. In this embodiment, by forming a gap between the first main body and the first side wall, the first fastener can extend into the gap, which is conducive to improving the stability of the fixation between the first fastener and the first main body.
[0011] In one or more / any one of the above optional embodiments, the first connecting member further comprises a second fixing portion, the second fixing portion is fixed to the first side wall, and the first fixing portion and the second fixing portion are connected to opposite sides of the first main body. In this embodiment, by providing the second fixing portion, the stability of the fixation between the first connecting member and the first side wall can be improved.
[0012] In one or more / any one of the above optional embodiments, the first connector further includes a third fixing portion, the third fixing portion is fixed to the first side wall, the third fixing portion is connected to the first main body portion, and in the second direction, the projection of the third fixing portion is located between the projection of the first fixing portion and the projection of the second fixing portion, and the second direction is perpendicular to the first direction. In this embodiment, by providing the third fixing portion, the stability of the fixation between the first connector and the first side wall can be improved.
[0013] In one or more / any one of the above optional embodiments, the battery cell assembly includes a first end plate, a second end plate and a plurality of battery cells, the first end plate and the second end plate are arranged relative to each other along the second direction, the plurality of battery cells are located between the first end plate and the second end plate, and the first fixing hole is arranged on the first end plate.
[0014] In order to solve the above technical problems, another technical solution adopted by the embodiment of the utility model is: to provide an energy storage system, including the above battery module.
[0015] The beneficial effects of the embodiments of the utility model are as follows: different from the prior art, in the embodiments of the utility model, the shell includes a first side wall and a second side wall arranged relatively to each other along a first direction, and the battery cell assembly is provided with a first fixing hole. By passing the first fixing assembly through the first fixing hole and fixing the first fixing assembly to the first side wall, it is beneficial to reduce the collision between the battery cell assembly and the shell, thereby reducing the risk of damage to the battery cell assembly and improving the safety performance of the battery cell assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0017] Figure 1 It is a schematic diagram of the exploded structure of the battery module provided in the embodiment of the utility model;
[0018] Figure 2 is a schematic structural diagram of a battery module provided in an embodiment of the utility model when the second side wall is removed;
[0019] Figure 3 It is a schematic cross-sectional view of a local structure of a battery assembly provided in an embodiment of the utility model;
[0020] Figure 4 It is a cross-sectional schematic diagram of a local structure of a battery assembly provided in an embodiment of the utility model including a first nut;
[0021] Figure 5 It is a schematic structural diagram of a cutaway portion of a battery assembly provided in an embodiment of the utility model when the battery assembly has a first screw hole;
[0022] Figure 6 It is a structural schematic diagram of a first connecting member provided in an embodiment of the utility model;
[0023] Figure 7 It is a schematic cross-sectional view of a local structure of a battery assembly provided in an embodiment of the utility model.
[0024] Figure Number:
[0025] 100. Battery module; 1. Shell; 11. First side wall; 12. Second side wall; 13. Top wall; 14. Bottom wall; 15. Accommodation space; 2. Cell assembly; 21. First end plate; 211. First fixing hole; 22. Second end plate; 221. Second fixing hole; 23. Cell; 24. Bracket; 3. First fixing assembly; 31. First connecting member; 311. First main body; 3111. First through hole; 3112. First side; 3113. Second side; 3114. Third side; 312. First fixing part; 313. Second fixing part; 314. Third fixing part; 32. First fastener; 33. First nut; 4. Binding belt; 6. Wiring harness. DETAILED DESCRIPTION
[0026] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.
[0028] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0029] See also Figure 1 The battery module 100 includes: a shell 1 and a battery cell assembly 2. The battery cell assembly 2 is accommodated in the shell 1. The battery cell assembly 2 can store electrical energy or output electrical energy to the outside.
[0030] In some embodiments, see Figures 1 to 4The battery module 100 includes a first fixing component 3 disposed in the housing 1, the battery cell assembly 2 is provided with a first fixing hole 211, the housing 1 includes a first side wall 11 and a second side wall 12 disposed opposite to each other along a first direction X, the battery cell assembly 2 is located between the first side wall 11 and the second side wall 12, the first fixing component 3 is disposed in the first fixing hole 211, the first fixing component 3 is fixed to the first side wall 11, and the first fixing component 3 fixes the battery cell assembly 2 to the housing 1. In this embodiment, the battery cell assembly 2 is fixed to the first side wall 11 by the first fixing component 3, which is conducive to reducing the collision between the battery cell assembly 2 and the housing 1, thereby reducing the risk of damage to the battery cell assembly 2 and improving the safety of the battery cell assembly 2.
[0031] In some embodiments, the first fixing component 3 can be fixed to the second side wall 12 .
[0032] In some embodiments, the housing 1 includes a top wall 13 and a bottom wall 14 that are arranged opposite to each other along the second direction Y. Along the second direction Y, the top wall 13 is spaced apart from the battery cell assembly 2, and a receiving space 15 is formed between the battery cell assembly 2 and the top wall 13. The second direction Y is perpendicular to the first direction X. In this embodiment, by forming the receiving space 15 between the top wall 13 and the battery cell assembly 2, components such as a circuit board (unnumbered) or a wiring harness 6 can be arranged in the receiving space 15, which is conducive to improving the flexibility of the layout of various components (such as circuit boards and wiring harnesses 6) in the housing 1. The first fixing component 3 is fixed to the first side wall 11, reducing the space occupied by the first fixing component 3 in the receiving space 15.
[0033] In some embodiments, the battery module 100 includes a wiring harness 6, which is electrically connected to the battery cell assembly 2, at least a portion of the wiring harness 6 is accommodated in the accommodation space 15, and the battery cell assembly 2 is electrically connected to a circuit board or an external device through the wiring harness 6.
[0034] In some embodiments, there are multiple wire harnesses 6 , all of which are electrically connected to the battery cell assembly 2 , and each wire harness 6 is at least partially contained in the containing space 15 .
[0035] In some embodiments, see Figure 3 and Figure 4 The first fixing component 3 includes a first connecting member 31 and a first fastener 32. The first connecting member 31 is fixed to the first side wall 11. The first fastener 32 is passed through the first fixing hole 211 and fixed to the first connecting member 31, thereby achieving fixation between the battery cell assembly 2 and the shell 1.
[0036] In some embodiments, see Figure 3 and Figure 4The first fixing component 3 includes a first nut 33, the first connecting member 31 is provided with a first through hole 3111, the first fastener 32 passes through the first fixing hole 211 and the first through hole 3111 in sequence, the first fastener 32 protrudes from the first through hole 3111, and the first nut 33 is fixed to the first fastener 32, thereby fixing the battery cell assembly 2 and the first connecting member 31.
[0037] In some embodiments, the first fastener 32 is a screw.
[0038] In some embodiments, see Figure 5 The first connecting member 31 is provided with a first screw hole 315 , and the first fastener 32 passes through the first fixing hole 211 and is screwed and fixed to the first screw hole 315 , thereby fixing the battery cell assembly 2 and the first connecting member 31 .
[0039] In some embodiments, see 1. Figure 4 and Figure 6 The first connecting member 31 includes a first main body portion 311 and a first fixing portion 312. The first fixing portion 312 is fixed to the first side wall 11. The first fixing portion 312 is connected to the first main body portion 311. The first fastener 32 passes through the first fixing hole 211 and is fixed to the first main body portion 311, thereby achieving fixation between the battery cell assembly 2 and the first connecting member 31, and then fixing the battery cell assembly 2 to the shell 1.
[0040] Furthermore, the first through hole 3111 is provided in the first main body portion 311 , and the first fastener 32 passes through the first fixing hole 211 and the first through hole 3111 in sequence and is screwed and fixed with the first nut 33 to fix the battery cell assembly 2 and the first connecting member 31 .
[0041] In some embodiments, the shape of the first fixing portion 312 is substantially L-shaped, and a portion of the first fixing portion 312 away from the first main body portion 311 is fixed to the first side wall 11 .
[0042] In some embodiments, the first main body portion 311 and the first fixing portion 312 are arranged at a first angle. The first angle between the first main body portion 311 and the first fixing portion 312 is 75° to 105°, preferably 90°.
[0043] In some embodiments, the first fixing portion 312 is fixed to the first side wall 11 by screws.
[0044] In some embodiments, the first fixing portion 312 and the first side wall 11 may be fixed by welding.
[0045] In some embodiments, see Figure 5Along the first direction X, a gap 7 is formed between the first main body 311 and the first side wall 11, and a portion of the first fastener 32 is located in the gap 7. The first nut 33 is located in the gap 7, and a portion of the first fastener 32 located in the gap 7 is screwed and fixed to the first nut 33.
[0046] In some embodiments, see Figure 1 and Figure 6 The first connecting member 31 includes a second fixing portion 313, the second fixing portion 313 is fixed to the first side wall 11, and the second fixing portion 313 and the first fixing portion 312 are respectively connected to two opposite sides of the first main body portion 311. In this embodiment, by providing the second fixing portion 313, the fixing stability between the first connecting member 31 and the first side wall 11 can be enhanced, which is conducive to increasing the fixing stability between the battery cell assembly 2 and the housing 1.
[0047] In some embodiments, the first main body portion 311 has a first side 3112 and a second side 3113 , the first side 3112 and the second side 3113 are opposite to each other, the first fixing portion 312 is connected to the first side 3112 , and the second fixing portion 313 is connected to the second side 3113 .
[0048] In some embodiments, the second fixing portion 313 is substantially L-shaped, and a portion of the second fixing portion 313 away from the first main body portion 311 is fixed to the first side wall 11 .
[0049] In some embodiments, the first angle between the first body portion 311 and the second fixing portion 313 is 75° to 105°, preferably 90°.
[0050] In some embodiments, the second fixing portion 313 is fixed to the first side wall 11 by screws.
[0051] In some embodiments, the second fixing portion 313 and the first side wall 11 may be fixed by welding.
[0052] In some embodiments, the first connector 31 includes a third fixing portion 314, the third fixing portion 314 is fixed to the first side wall 11, the third fixing portion 314 is connected to the first main body portion 311, and the third fixing portion 314 is located between the first fixing portion 312 and the second fixing portion 313. In the second direction Y, the projection of the third fixing portion 314 is located between the projection of the first fixing portion 312 and the projection of the second fixing portion 313. In this embodiment, by providing the third fixing portion 314, the third fixing portion 314 is fixed to the first side wall 11, and the stability of the fixation between the first connector 31 and the first side wall 11 can be further enhanced.
[0053] In some embodiments, the first main body portion 311 has a third side 3114, and the third fixing portion 314 is connected to the third side 3114, wherein the first side 3112, the third side 3114 and the second side 3113 are the sides to which the first main body portion 311 is sequentially connected.
[0054] In some embodiments, the third fixing portion 314 is substantially L-shaped, and a portion of the third fixing portion 314 away from the first main body portion 311 is fixed to the first side wall 11 .
[0055] In some embodiments, the first angle between the first body portion 311 and the third fixing portion 314 is 75° to 105°, preferably 90°.
[0056] In some embodiments, the third fixing portion 314 is fixed to the first side wall 11 by screws.
[0057] In some embodiments, the third fixing portion 314 and the first side wall 11 may be fixed by welding.
[0058] In some embodiments, see Figure 2 , Figure 3 and Figure 4 The battery cell assembly 2 includes a first end plate 21, a second end plate 22 and a plurality of battery cells 23. The first end plate 21 and the second end plate 22 are arranged opposite to each other along the second direction Y. The plurality of battery cells 23 are stacked along the second direction Y. The plurality of battery cells 23 are located between the first end plate 21 and the second end plate 22. The first fixing hole 211 is provided in the first end plate 21. The first fastener 32 passes through the first fixing hole 211 and the first through hole 3111 and is screwed with the first nut 33, thereby fixing the first end plate 21 to the first connecting member 31.
[0059] In some embodiments, the plurality of battery cells 23 are electrically connected to the wiring harness 6 described above.
[0060] In some embodiments, the battery cell assembly 2 includes multiple brackets 24, which are stacked along the second direction Y, and a battery cell 23 is arranged between two adjacent brackets 24 so that the brackets 24 can protect the battery cell 23 and reduce the risk of damage to the battery cell 23.
[0061] In some embodiments, the battery cell assembly 2 includes a binding belt 4, and the binding belt 4 binds the outer side of the battery cell assembly 2 along the second direction Y, so as to bind and fix the first end plate 21, the second end plate 22, the plurality of battery cells 23 and the plurality of brackets 24. In this embodiment, the first end plate 21, the second end plate 22, the plurality of battery cells 23 and the plurality of brackets 24 are bound and fixed by the binding belt 4. When the first end plate 21 is fixed to the first connecting member 31, the entire battery cell assembly 2 and the first connecting member 31 can be fixed, thereby simplifying the structure of the battery module 100.
[0062] In some embodiments, there are multiple binding belts 4, and the multiple binding belts 4 are spaced apart along the third direction Z, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The multiple binding belts 4 bind and fix the first end plate 21, the second end plate 22, the multiple battery cells 23, and the multiple brackets 24 to improve the stability of the fixation between the first end plate 21, the second end plate 22, the multiple battery cells 23, and the multiple brackets 24.
[0063] In some embodiments, see Figure 1 and Figure 2 The first end plate 21 is provided with a plurality of first fixing holes 211, and the battery module 100 includes a plurality of first fixing components 3, each of which includes a first fastener 32, a first connector 31 and a first nut 33. The plurality of first connectors 31 are fixed to the first side wall 11, and the first connector 31 is provided with a first through hole 3111. A first fastener 32 passes through a first fixing hole 211 and a first through hole 3111 in sequence and is screwed and fixed with a first nut 33, thereby fixing the first end plate 21 to the plurality of first connectors 31. In this embodiment, the first end plate 21 is fixed to the first side wall 11 by a plurality of first fixing components 3, which is conducive to improving the stability of the fixation between the battery cell assembly 2 and the first side wall 11.
[0064] In some embodiments, see Figure 2 , Figure 3 and Figure 7 The second end plate 22 is provided with a second fixing hole 221, and the number of the first fixing components 3 is multiple, and the multiple first fixing components 3 are all fixed to the first side wall 11. Some of the first fixing components 3 are arranged in the first fixing hole 211 of the first end plate 21, and some of the first fixing components 3 are arranged in the second fixing hole 221 of the second end plate 22. For details, please refer to Figure 7 , the first fastener 32 passes through the second fixing hole 221 and is fixed to the first connecting member 31. In this embodiment, by providing the second fixing hole 221 in the second end plate 22, the second end plate 22 is fixed to the first side wall 11 by the first fixing assembly 3, thereby improving the stability of the fixing between the entire battery cell assembly 2 and the first side wall 11.
[0065] In an embodiment of the utility model, the shell 1 includes a first side wall 11 and a second side wall 12 arranged relatively to each other along a first direction X, and the battery cell assembly 2 is provided with a first fixing hole 211. By passing the first fixing component 3 through the first fixing hole 211 and fixing the first fixing component 3 to the first side wall 11, it is beneficial to reduce the collision between the battery cell assembly 2 and the shell 1, thereby reducing the risk of damage to the battery cell assembly 2 and improving the safety performance of the battery cell assembly 2.
[0066] The present invention further provides an energy storage system embodiment, the energy storage system includes the above-mentioned battery module 100, the specific structure and function of the battery module 100 can be referred to the above-mentioned embodiment, and will not be described one by one here.
[0067] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A battery module, comprising: The housing comprises a first side wall and a second side wall which are arranged opposite to each other along a first direction; A battery cell assembly is accommodated in the housing, and the battery cell assembly is provided with a first fixing hole; It is characterized in that the battery module includes a first fixing component located in the shell, the first fixing component is arranged in the first fixing hole, and the first fixing component fixes the first side wall and the battery cell assembly.
2. The battery module according to claim 1, characterized in that: The housing comprises a top wall and a bottom wall arranged opposite to each other along a second direction, a receiving space is formed between the top wall and the battery cell assembly, and the second direction is perpendicular to the first direction; The battery module includes a wiring harness, which is electrically connected to the battery cell assembly and at least partially accommodated in the accommodation space.
3. The battery module according to claim 1, characterized in that: The first fixing assembly includes a first connecting member and a first fastening member. The first connecting member is fixed to the first side wall. The first fastening member passes through the first fixing hole and is fixed to the first connecting member.
4. The battery module according to claim 3, characterized in that: The first fixing assembly includes a first nut, the first connecting member is provided with a first through hole, the first fastener is sequentially inserted into the first fixing hole and the first through hole, and the first fastener is fixed to the first nut.
5. The battery module according to claim 4, characterized in that: The first connecting member includes a first main body and a first fixing portion, the first fixing portion is fixed to the first side wall, the first fixing portion is connected to the first main body, and the first through hole is provided in the first main body.
6. The battery module according to claim 5, characterized in that: A gap is formed between the first main body and the first side wall, and a portion of the first fastener is located in the gap.
7. The battery module according to claim 6, characterized in that: The first connecting member includes a second fixing portion, the second fixing portion is fixed to the first side wall, and the first fixing portion and the second fixing portion are connected to two opposite sides of the first main body.
8. The battery module according to claim 7, characterized in that: The first connecting member includes a third fixing portion, the third fixing portion is fixed to the first side wall, and the third fixing portion is connected to the first main body portion; In the second direction, the projection of the third fixing portion is located between the projection of the first fixing portion and the projection of the second fixing portion, and the second direction is perpendicular to the first direction.
9. The battery module according to any one of claims 1 to 8, characterized in that: The battery cell assembly includes a first end plate, a second end plate and a plurality of battery cells, the first end plate and the second end plate are arranged opposite to each other along a second direction, the plurality of battery cells are located between the first end plate and the second end plate, and the first fixing hole is arranged on the first end plate.
10. An energy storage system, characterized in that: Comprising a battery module as described in any one of claims 1 to 9.