Bending structure
By using a bent structure housing and support in the square battery package, the large space occupation and complex process problems caused by the bottom bracket and hot melt treatment are solved, and a more efficient battery packaging is achieved, reducing costs and processes.
Patent Information
- Application Number
- CN202421171899.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-05-27
AI Technical Summary
During the packaging process of square batteries, the bottom bracket needs to be used and hot melting treatment is performed, resulting in large space occupation and complex process steps.
A bending structure is adopted, including the housing surrounding the pole set and covering its outer wall, and the pole set is supported from the bottom through a support member to reduce dependence on the bottom bracket.
No bottom bracket is required, which reduces production processes and costs, while also improving battery cell assembly ratio and capacity.
Smart Images
Figure CN222813728U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a bending structure. Background Art
[0002] There are three types of power battery packaging: cylindrical, square and soft pack. Square batteries are more flexible and can be customized according to the specific needs of the products they are installed in. Therefore, square batteries were once considered the most suitable battery design for new energy vehicle applications.
[0003] When packaging square batteries, mylar (polyester polymer) is melted with the bottom plate and then wrapped with the pole group. Therefore, during the assembly process, the shell contacts the bottom plate, which has the following technical problems:
[0004] First, you need to use a bottom tray;
[0005] Second, mylar and the base plate need to be hot-melt.
[0006] Therefore, how to solve the problem of large space occupation and complicated process steps during battery packaging is a technical problem that needs to be solved urgently in this field. Utility Model Content
[0007] The purpose of the utility model is to provide a bending structure to solve the above problems.
[0008] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a bending structure, comprising
[0009] Pole group; and
[0010] A shell is disposed circumferentially around the pole group and is suitable for covering the pole group.
[0011] Preferably, the shell includes a covering portion, and the covering portion is suitable for circumferentially covering the outer wall of the annular pole group on the outer wall of the pole group.
[0012] Preferably, the covering portion is rectangular.
[0013] Preferably, both ends of the covering portion in the length direction are suitable for sticking to each other.
[0014] Preferably, the shell further comprises a support member, the support member is fixed to the lower end of the covering portion, and the support member is suitable for supporting the pole group from the bottom.
[0015] Preferably, the support member is suitable for bending 90 degrees relative to the covering portion.
[0016] Preferably, the support member is provided with a fold along the center line of the length direction, and the support member can be bent along the fold.
[0017] Preferably, the support member is suitable for bending along the fold toward a side close to the covering portion.
[0018] Preferably, the support member is suitable for bending along the fold toward a side away from the covering portion.
[0019] Preferably, the angle formed by the support member after being bent along the fold is an acute angle.
[0020] Compared with the prior art, the embodiments of the bending structure of the utility model have the following beneficial effects: by wrapping the pole group with the shell ring, there is no need to set a bottom support plate under the pole group, which reduces the production line manufacturing process and can also improve the battery cell assembly ratio and capacity.
[0021] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.
[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 A three-dimensional diagram of the bending structure of the utility model is shown;
[0025] Figure 2 A schematic diagram showing a state of the support member of the utility model is shown;
[0026] Figure 3 Another schematic diagram of the supporting member of the utility model is shown.
[0027] In the figure:
[0028] 1. Pole group; 2. Shell; 21. Covering part; 22. Support member; 3. Crease. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.
[0030] like Figures 1 to 3 As shown, the utility model provides a bending structure, including: a pole group 1; and a shell 2, the shell 2 is arranged circumferentially around the pole group 1, and the shell 2 is suitable for covering the pole group 1. By surrounding the pole group 1 with the shell 2, there is no need to set a bottom support plate under the pole group 1, which reduces the production line production process and can also improve the battery cell assembly ratio and capacity. The shell 2 adopts a ring-wrapped setting, which saves space and removes the bottom support plate, reducing costs; moreover, there is no need to fix the bottom support plate to the shell 2 by hot melting, saving equipment costs.
[0031] Preferably, the shell 2 includes a covering portion 21, and the covering portion 21 is suitable for covering the outer wall of the pole group 1 circumferentially around the outer wall of the pole group 1. The covering portion 21 is rectangular. The covering portion 21 is suitable for covering the pole group 1 circumferentially from the outer wall of the pole group 1, and the two ends of the covering portion 21 in the length direction are suitable for sticking to each other.
[0032] Reference Figure 1 The shell 2 also includes a support member 22, which is fixed at the lower end of the covering portion 21, and the support member 22 is suitable for supporting the pole group 1 from the bottom. The support member 22 is integrally arranged with the covering portion 21, and there are two support members 22, and the two support members 22 are suitable for supporting the pole group 1 from the bottom. The support member 22 is suitable for bending 90 degrees relative to the covering portion 21. The support member 22 is provided with a fold 3 along the center line of the length direction, and the support member 22 can be bent along the fold 3. The covering portion 21 and the support member 22 cooperate to package the pole group 1 in a ring-wrapped bending manner.
[0033] Reference Figure 2 The support member 22 is suitable for bending along the fold 3 toward a side close to the covering portion 21. The support member 22 is bent upward along the fold 3, thereby improving the stability of the support member 22 supporting the electrode group 1.
[0034] Reference Figure 3 The support member 22 is suitable for bending along the fold 3 to the side away from the covering portion 21. The support member 22 is bent downward along the fold 3, which increases the space at the bottom of the electrode group 1, which is beneficial to improving the battery cell assembly ratio and capacity.
[0035] Preferably, the included angle of the support member 22 after being bent along the fold 3 is an acute angle.
[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0037] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the invention through the above description. The technical scope of the invention is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A bending structure, characterized in that: include: Pole group (1); and A shell (2), the shell (2) being arranged circumferentially around the pole group (1), and the shell (2) being suitable for covering the pole group (1); The shell (2) comprises a covering portion (21), wherein the covering portion (21) is suitable for covering the outer wall of the annular pole group (1) circumferentially around the outer wall of the pole group (1).
2. The bending structure according to claim 1, characterized in that: The covering portion (21) is rectangular.
3. The bending structure according to claim 2, characterized in that: The two ends of the covering portion (21) in the length direction are suitable for being adhered to each other.
4. The bending structure according to claim 3, characterized in that: The shell (2) further comprises a support member (22), wherein the support member (22) is fixed to the lower end of the covering portion (21), and the support member (22) is suitable for supporting the pole group (1) from the bottom.
5. The bending structure according to claim 4, characterized in that: The support member (22) is suitable for being bent 90 degrees relative to the covering portion (21).
6. The bending structure according to claim 5, characterized in that: The support member (22) is provided with a fold (3) along the center line of the length direction, and the support member (22) can be bent along the fold (3).
7. The bending structure according to claim 5, characterized in that: The support member (22) is suitable for bending along the fold (3) towards a side close to the covering portion (21).
8. The bending structure according to claim 5, characterized in that: The support member (22) is suitable for bending along the fold (3) towards a side away from the covering portion (21).
9. The bending structure according to claim 5, characterized in that: The included angle of the support member (22) after being bent along the fold (3) is an acute angle.