Battery monomer, battery and electric equipment
By designing a battery cell housing with a receiving cavity, and providing a battery cell and an inclined end wall therein to form a storage space, the space occupation problem caused by the large distance between the battery cell housing and the battery cell is solved, and the effect of reducing the volume and space occupation of the outer shell is achieved.
Patent Information
- Application Number
- CN202421306705.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The space between the outer shell of the battery cell and the battery cell is large, resulting in an increase in the outer shell volume and occupying a large space.
A battery cell is designed, and its outer shell has a receiving cavity, the battery cell is arranged in the receiving cavity, the end wall is arranged opposite to the end surface of the battery cell, forming a storage space to accommodate the pole ear, and the end wall is arranged inclined to reduce the size of the storage space.
By reducing the spacing between the housing and the battery cell, the volume of the housing is reduced and the space occupied by the battery cell is reduced.
Smart Images
Figure CN222673101U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of batteries, in particular to a battery monomer, a battery and electrical equipment. Background Art
[0002] With the development and progress of society, lithium batteries have rapidly entered people's field of vision as a new energy source, and lithium batteries have also been widely used in various fields.
[0003] The battery cells and tabs of a battery cell usually need to be placed inside the battery cell shell, and the battery cell is electrically connected to external equipment through the tabs. However, since the tabs are usually protruding from the surface of the battery cell and conventional battery cells are cube-shaped, the shell is usually also designed as a cube structure, which requires space to be reserved between the inner wall of the shell and the battery cell for placing the tabs, resulting in a larger gap between the shell and the battery cell, increasing the volume of the shell, and requiring the battery cell to occupy a larger space. Utility Model Content
[0004] To this end, the utility model provides a battery cell, a battery and an electrical device, which solve the technical problem that the distance between the shell and the battery core is large, the volume of the shell is increased, and the battery cell needs to occupy a large space.
[0005] To achieve the above-mentioned purpose, the utility model specifically provides the following technical solutions: a battery cell, comprising: a shell, having a accommodating cavity; the shell comprising a side wall and two end walls arranged opposite to the side wall along a first direction; a battery cell, arranged in the accommodating cavity, the battery cell comprising a battery cell body, the battery cell body comprising two battery cell end faces arranged opposite to each other along the first direction, each of the battery cell end faces extending with a pole ear; wherein each of the end walls is inclined relative to the corresponding battery cell end face, so that a accommodating space is formed between the side wall, the end wall and the corresponding battery cell end face, and at least part of the corresponding pole ear is accommodated in the accommodating space.
[0006] Optionally, the end wall includes a first end and a second end that are relatively arranged along its longitudinal direction, and along the first direction, the distance from the first end to the corresponding end face of the battery cell is smaller than the distance from the second end to the corresponding end face of the battery cell, and the corresponding pole ear is arranged at an end of the corresponding end face of the battery cell close to the second end.
[0007] Optionally, the side wall is provided with an explosion-proof valve, and at least a portion of the explosion-proof valve is arranged opposite to the receiving space.
[0008] Optionally, the side wall includes two oppositely disposed first side walls and two oppositely disposed second side walls, the area of the first side wall is smaller than the area of the second side wall, and at least one of the first side walls is provided with the explosion-proof valve.
[0009] Optionally, along the first direction, the length of the explosion-proof valve beyond the end surface of the battery cell accounts for 70%-100% of the length of the explosion-proof valve.
[0010] Optionally, the angle between the end wall and the corresponding end face of the battery cell is 20°-45°.
[0011] Optionally, it also includes a first electrode terminal and a second electrode terminal, the first electrode terminal protruding from one of the end walls, the other end wall having a groove facing the battery cell, the second electrode terminal being arranged in the groove and not extending beyond a side surface of the end wall away from the battery cell, the first electrode terminal and the second electrode terminal being electrically connected to the two pole ears respectively.
[0012] In addition, a battery is provided, comprising a plurality of battery cells as described above arranged in sequence, wherein the end walls of two adjacent battery cells are arranged to abut against each other.
[0013] Optionally, a box body is further included, the box body is hollow, and the plurality of battery cells are arranged in the box body, and the end plate of the box body and the outer shell of the battery cell opposite thereto are arranged in parallel.
[0014] In addition, an electrical device is provided, comprising the above-mentioned battery cell and / or the above-mentioned battery.
[0015] Compared with the prior art, the utility model has the following beneficial effects: in the embodiment of the utility model, the battery cell can be placed in the accommodating cavity of the shell, and the battery cell can be accommodated and protected by the shell, and the battery cell body of the battery cell is provided with pole ears extending from the two battery cell end faces arranged in the first direction, and the two end walls are respectively arranged opposite to the two battery cell end faces of the battery cell body, and a receiving space is formed between the side wall, the end wall and the corresponding battery cell end faces, so that at least part of the corresponding pole ears can be accommodated in the receiving space to accommodate the pole ears, and each end wall is inclined relative to the corresponding battery cell end face, which can reduce the size of the receiving space between the end wall and the battery cell body, so as to reduce the volume of the shell, thereby reducing the space occupied by the shell, thereby reducing the size of the space occupied by the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0017] Figure 1A schematic diagram of the structure of a battery cell provided by an embodiment of the utility model;
[0018] Figure 2 for Figure 1 A cross-sectional view of a battery cell provided by an embodiment of the utility model;
[0019] Figure 3 A cross-sectional view of a battery provided in an embodiment of the utility model.
[0020] Reference numerals:
[0021] Battery cell 100; accommodating space 101; battery cell body 110; battery cell end face 111; pole ear 120; shell 200; end wall 210; first end 211; second end 212; side wall 220; first side wall 221; second side wall 222; groove 230; first electrode terminal 300; second electrode terminal 400; explosion-proof valve 500; box body 600; end plate 610. DETAILED DESCRIPTION
[0022] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.
[0024] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 present invention.
[0025] Reference below Figures 1 to 3 A battery cell, a battery and an electrical device according to an embodiment of the present invention are described.
[0026] According to the battery cell of the embodiment of the first aspect of the utility model, the battery cell includes a shell 200 and a battery cell 100; the shell 200 has a accommodating cavity; the shell 200 includes a side wall 220 and two end walls 210 arranged opposite to the side wall 220 along a first direction; the battery cell 100 is arranged in the accommodating cavity, and the battery cell 100 includes a battery cell body 110, and the battery cell body 110 includes two battery cell end faces 111 arranged opposite to each other along the first direction, and each battery cell end face 111 is extended with a pole ear 120; wherein each end wall 210 is inclined relative to the corresponding battery cell end face 111, so that a receiving space 101 is formed between the side wall 220, the end wall 210 and the corresponding battery cell end face 111, and at least part of the corresponding pole ear 120 is accommodated in the receiving space 101.
[0027] In an embodiment of the utility model, the battery cell 100 can be placed in the accommodating cavity of the shell 200, and the shell 200 can accommodate and protect the battery cell 100. The battery body 110 of the battery cell 100 is provided with pole ears 120 extending from the two battery end faces 111 arranged in the first direction. The two end walls 210 are respectively arranged opposite to the two battery end faces 111 of the battery body 110. A receiving space 101 is formed between the side wall 220, the end wall 210 and the corresponding battery end face 111, so that at least part of the corresponding pole ears 120 can be accommodated in the receiving space 101 to accommodate the pole ears 120. Each end wall 210 is inclined relative to the corresponding battery end face 111, which can reduce the size of the receiving space 101 between the end wall 210 and the battery body 110, so as to reduce the volume of the shell 200, thereby reducing the space occupied by the shell 200, thereby reducing the size of the space occupied by the battery cell.
[0028] The two end walls 210 are arranged opposite to each other in the first direction, and the two battery cell end faces 111 of the battery cell 100 are respectively arranged at the two side ends of the battery cell 100 in the first direction. The two end walls 210 are respectively arranged opposite to the two battery cell end faces 111, and the oppositely arranged end walls 210 and battery cell end faces 111 are the battery cell end faces 111 corresponding to the end walls 210.
[0029] In some embodiments of the present application, the shell 200 includes a shell and a cover plate. The shell is hollow and has openings relatively arranged therein. Two cover plates are arranged to cover the openings of the shell. The cover plate may be an end wall 210. Of course, according to specific actual conditions, in other embodiments of the present application, the cover plate may also be any side wall 220 of the shell 200.
[0030] Reference Figure 2It can be understood that the end wall 210 includes a first end 211 and a second end 212 that are arranged opposite to each other along its longitudinal direction. Along the first direction, the distance from the first end 211 to the corresponding battery cell end face 111 is smaller than the distance from the second end 212 to the corresponding battery cell end face 111, so as to reduce the distance between the end wall 210 and the battery cell end face 111, thereby reducing the size of the receiving space 101, reducing the volume of the shell 200, and reducing the space occupied by the shell 200, thereby reducing the size of the space occupied by the battery cell. The corresponding pole ear 120 is arranged at the corresponding battery cell end face 111 close to the second end 2 One end of 12 can play the effect of avoiding the empty pole ear 120, avoiding the collision between the end wall 210 and the pole ear 120, and can play the role of protecting the pole ear 120. Moreover, since the pole ear 120 also needs to occupy the space inside 200, compared with the situation that the corresponding pole ear 120 is arranged at the end of the corresponding battery cell end face 111 close to the first end 211, in the utility model, the corresponding pole ear 120 is arranged at the end of the corresponding battery cell end face 111 close to the second end 212, which can reduce the influence of the pole ear 120 on the space occupied by the shell 200, so as to further reduce the space occupied by the shell 200.
[0031] Specifically, the end wall 210 is tilted toward the direction close to the end surface 111 of the battery cell; wherein the two end walls 210 are arranged in parallel; the first end 211 of one end wall 210 is located at the top and the second end 212 is located at the bottom, while the first end 211 of the other end wall 210 is located at the bottom and the second end 212 is located at the top.
[0032] Reference Figure 2 Since each end wall 210 is tilted relative to the corresponding battery cell end face 111, the longitudinal direction of the end wall 210 is tilted relative to the first direction, that is, there is an angle between the longitudinal direction of the end wall 210 and the first direction, and the two ends of the end wall 210 in the longitudinal direction are respectively the first end 211 and the second end 212, and the distances between the two ends of the end wall 210 in the longitudinal direction and the battery cell end face 111 in the first direction are not equal.
[0033] Reference Figure 1 and Figure 2 It can be understood that the side wall 220 is provided with an explosion-proof valve 500 , and at least a portion of the explosion-proof valve 500 is arranged opposite to the receiving space 101 .
[0034] By setting the explosion-proof valve 500, a pressure relief effect can be achieved when the air pressure inside the shell 200 is too high; specifically, the explosion-proof valve 500 is set on the side wall 220 of the shell 200, and the explosion-proof valve 500 is set in the area near the acute angle of the shell 200. The explosion-proof valve 500 can ensure a sufficient air release channel in this area.
[0035] Reference Figure 2It can be understood that the side wall 220 includes two oppositely arranged first side walls 221 and two oppositely arranged second side walls 222, the area of the first side wall 221 is smaller than the area of the second side wall 222, and at least one first side wall 221 is provided with an explosion-proof valve 500 to ensure that the explosion-proof valve 500 can work normally; wherein, the ends of the two first side walls 221 are connected to the ends of the two second side walls 222 to enclose with the two end walls 210 to form a accommodating cavity.
[0036] Specifically, a plurality of explosion-proof valves 500 may be provided to improve the pressure relief effect.
[0037] Reference Figure 2 It can be understood that, since the distance between the battery cell body 110 and the first side wall 221 on which the explosion-proof valve 500 is provided is relatively small, along the first direction, the length of the explosion-proof valve 500 exceeding the battery cell end face 111 accounts for 70%-100% of the length of the explosion-proof valve 500, so as to avoid the battery cell body 110 blocking the explosion-proof valve 500, so that the explosion-proof valve 500 is not opposite to the battery cell 100, and the explosion-proof valve 500 can be ensured to work normally; specifically, the length of the explosion-proof valve 500 exceeding the battery cell end face 111 accounts for 100% of the length of the explosion-proof valve 500.
[0038] Reference Figure 1 and Figure 2 It can be understood that the angle between the end wall 210 and the corresponding battery cell end face 111 is 20-45°.
[0039] The end wall 210 is inclined near the direction of the battery cell end face 111, so that the two end walls 210 are arranged to avoid the empty pole ear 120 to avoid collision between the end wall 210 and the pole ear 120, and by setting the inclined end wall 210, the space between the end wall 210 and the battery cell body 110 can be reduced, so that the volume of the outer shell 200 can be reduced, thereby reducing the space occupied by the outer shell 200, so as to reduce the space occupied by the battery cell.
[0040] Specifically, the angle between the end wall 210 and the corresponding battery cell end face 111 is preferably 45°.
[0041] Reference Figure 1 and Figure 2 It can be understood that the battery cell further includes a first electrode terminal 300 and a second electrode terminal 400. The first electrode terminal 300 is protrudingly arranged on one of the end walls 210. The other end wall 210 is provided with a groove 230 facing the battery cell 100. The second electrode terminal 400 is arranged in the groove 230 and does not extend beyond the side surface of the end wall 210 away from the battery cell 100. The first electrode terminal 300 and the second electrode terminal 400 are electrically connected to the two tabs 120 respectively.
[0042] When multiple battery cells are arranged in sequence, the groove 230 is provided so that the first electrode terminal 300 and the second electrode terminal 400 on the outer shell 200 of two adjacent battery cells can be plugged into each other, and the first electrode terminal 300 of one battery cell can be inserted into the groove 230 of another battery cell and connected to the second electrode terminal 400 in the groove 230, so that the battery cell bodies 110 of the two battery cells can be electrically connected to each other; and the groove 230 can be provided to hide the connected first electrode terminal 300 and second electrode terminal 400, so as to reduce the gap between two adjacent battery cells, thereby further reducing the space occupied by multiple battery cells.
[0043] Specifically, the first electrode terminal 300 and the second electrode terminal 400 are both watchband contact springs.
[0044] refer to Figures 1 to 3 According to the battery of the second embodiment of the utility model, the battery includes a plurality of battery cells of the first embodiment described above arranged in sequence, and the end walls 210 of two adjacent battery cells are arranged in contact with each other.
[0045] Adjacent battery cells abut against each other, so that the structure of multiple battery cells in the box 600 is more compact, so as to improve the space utilization of the box 600; specifically, the battery cells are prismatic, and multiple prismatic battery cells are closely arranged in the box 600; specifically, the end walls 210 of adjacent battery cells are arranged in parallel.
[0046] The first electrode terminal 300 and the second electrode terminal 400 of the battery cell are respectively arranged at opposite sides of the housing 200 of the battery cell. There are multiple battery cells, which are arranged in sequence. The first electrode terminals 300 and the second electrode terminals 400 of adjacent battery cells are connected.
[0047] When multiple battery cells are arranged in sequence, the first electrode terminals 300 and the second electrode terminals 400 on the outer shells 200 of two adjacent battery cells can be connected to each other. Specifically, in two adjacent battery cells, the first electrode terminal 300 of one battery cell can be connected to the second electrode terminal 400 of the other battery cell, so that the battery cells 100 of the two battery cells can be electrically connected to each other.
[0048] Reference Figure 3 It can be understood that the battery also includes a box body 600, the box body 600 is hollow, and multiple battery cells are arranged in the box body 600. The end plate 610 of the box body 600 is arranged in parallel with the outer shell 200 of the battery cell opposite thereto.
[0049] Compared with the conventional square internal space of the battery, the box body 600 can support the battery cells inside the box body 600 through the end plate 610 to improve the stability of the box body 600 in supporting multiple interconnected battery cells, and can reduce the space size between the end plate 610 of the box body 600 and the battery cells, without adding other additional structural parts to support and fix the outer shell 200 of the battery cells.
[0050] refer to Figures 1 to 3 According to the electric device of the third aspect embodiment of the utility model, the electric device includes the battery cell of the first aspect embodiment and / or the battery of the second aspect embodiment.
[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A battery cell, characterized in that: include: A housing (200) having a containing cavity; the housing (200) comprises a side wall (220) and two end walls (210) arranged opposite to the side wall (220) along a first direction; A battery cell (100) is arranged in the accommodating cavity, the battery cell (100) comprising a battery cell body (110), the battery cell body (110) comprising two battery cell end surfaces (111) arranged opposite to each other along the first direction, each battery cell end surface (111) being provided with a pole ear (120); Each of the end walls (210) is arranged to be inclined relative to the corresponding battery cell end face (111), so that a receiving space (101) is formed between the side wall (220), the end wall (210) and the corresponding battery cell end face (111), and at least a portion of the corresponding electrode tab (120) is accommodated in the receiving space (101).
2. The battery cell according to claim 1, characterized in that: The end wall (210) comprises a first end (211) and a second end (212) arranged opposite to each other along its longitudinal direction; along the first direction, the distance from the first end (211) to the corresponding battery cell end face (111) is smaller than the distance from the second end (212) to the corresponding battery cell end face (111); and the corresponding electrode tab (120) is arranged at an end of the corresponding battery cell end face (111) close to the second end (212).
3. The battery cell according to claim 2, characterized in that: The side wall (220) is provided with an explosion-proof valve (500), and at least a portion of the explosion-proof valve (500) is arranged opposite to the receiving space (101).
4. The battery cell according to claim 3, characterized in that: The side wall (220) comprises two first side walls (221) arranged opposite to each other and two second side walls (222) arranged opposite to each other, the area of the first side walls (221) being smaller than the area of the second side walls (222), and at least one of the first side walls (221) being provided with the explosion-proof valve (500).
5. The battery cell according to claim 3, characterized in that: Along the first direction, the length of the explosion-proof valve (500) exceeding the battery cell end surface (111) accounts for 70%-100% of the length of the explosion-proof valve (500).
6. The battery cell according to any one of claims 1 to 5, characterized in that: The included angle between the end wall (210) and the corresponding battery cell end surface (111) is 20°-45°.
7. The battery cell according to any one of claims 1 to 5, characterized in that: The battery cell (100) further comprises a first electrode terminal (300) and a second electrode terminal (400), wherein the first electrode terminal (300) is protrudingly arranged on one of the end walls (210), and the other end wall (210) is provided with a groove (230) facing the battery cell (100), and the second electrode terminal (400) is arranged in the groove (230) and does not extend beyond a side surface of the end wall (210) away from the battery cell (100), and the first electrode terminal (300) and the second electrode terminal (400) are respectively electrically connected to the two electrode tabs (120).
8. A battery, characterized in that: include: A plurality of battery cells according to any one of claims 1 to 7 are arranged in sequence, wherein the end walls (210) of two adjacent battery cells are arranged to abut against each other.
9. The battery according to claim 8, characterized in that It also includes a box body (600), the box body (600) is hollow, a plurality of battery cells are arranged in the box body (600), and an end plate (610) of the box body (600) and an outer shell (200) of the battery cell opposite thereto are arranged in parallel.
10. Electrical equipment, characterized in that: include: The battery cell according to any one of claims 1 to 7 and / or the battery according to claim 8 or 9.