Battery cell, battery module and battery
By designing a battery cell that can flexibly change the exposed position of the housing, the problem of fixed position of the positive and negative pole columns of the battery cell in the existing battery module is solved, and the requirements are adapted to different situations are achieved, and voltage acquisition and other work are reduced. Difficulty.
Patent Information
- Application Number
- CN202323372525.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-11
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-11
AI Technical Summary
The positive and negative pole positions of the battery cell in the existing battery module are relatively fixed, and the exposed position of the shell cannot be flexibly changed according to the characteristics of the battery cell, and then the positive and negative pole positions and welding positions are changed, so it cannot adapt to the needs in different situations. , resulting in increased difficulty in voltage acquisition and other work.
A battery cell is designed, including a battery cell and a housing, the battery cell consists of a first electrode ear and a second electrode ear, the housing consists of a first shell, a second shell and an insulating ring, through the surface of the housing The insulating material is coated and the exposed position is changed, thereby changing the position of the first and second poles to meet the needs in different situations.
By flexibly changing the positive and negative pole positions and welding positions of the battery cell, it can adapt to the needs of the battery module under different circumstances, reducing the difficulty of voltage acquisition and other work.
Smart Images
Figure CN222463108U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power batteries, in particular to a battery monomer, a battery module and a battery. Background Art
[0002] The positions of the positive and negative poles of the battery cells in the existing battery modules are relatively fixed. The battery cells cannot flexibly change the exposed position of the shell according to the characteristics of the battery cells, and then change the positions of the positive and negative poles and the welding positions. Therefore, they cannot adapt to the needs of the battery module in different situations, which causes certain difficulties in voltage collection and other tasks. Utility Model Content
[0003] The utility model aims to provide a battery cell, a battery module and a battery to alleviate the problem that the prior art cannot flexibly change the exposed position of the shell, the position of the positive and negative poles, and the welding position according to the characteristics of the battery cell.
[0004] In order to solve the above technical problems, the technical solution provided by the utility model is:
[0005] In a first aspect, the utility model provides a battery cell, comprising:
[0006] A battery cell, comprising a first pole ear and a second pole ear, wherein the polarity of the first pole ear is opposite to the polarity of the second pole ear;
[0007] A shell, the shell includes a first shell, a second shell and an insulating ring, the insulating ring is respectively connected to the first shell and the second shell to form a accommodating cavity, the battery cell is located in the accommodating cavity; the first shell is electrically connected to the first pole ear, a first pole is arranged on the first shell, the second shell is electrically connected to the second pole ear, a second pole is arranged on the second shell, the first shell and the second shell are both covered with insulating material and the first pole and the second pole are exposed.
[0008] Furthermore, the first shell includes a first side wall, the second shell includes a second side wall, the first side wall and the second side wall are arranged opposite to each other along a first direction, the first pole is arranged on the first side wall, and the second pole is arranged on the second side wall.
[0009] As an optional manner, the shell is a rectangular parallelepiped, and the first direction is a length direction, wherein, in terms of size, width ≤ height < length.
[0010] Furthermore, the first pole and the second pole are respectively arranged at the ends of the first side wall and the second side wall.
[0011] As another optional embodiment, the shell is a rectangular parallelepiped, and the first direction is a width direction, wherein, in terms of size, width ≤ height < length.
[0012] Furthermore, the first pole and the second pole are respectively arranged in the middle of the first side wall and the second side wall.
[0013] As another optional embodiment, the first shell includes a third side wall, the second shell includes a fourth side wall, the third side wall and the fourth side wall are located on the same plane, the first pole is arranged on the third side wall, and the second pole is arranged on the fourth side wall.
[0014] Furthermore, the insulating material is epoxy resin, and the epoxy resin is coated on the outer surface of the shell by nano injection molding process;
[0015] Alternatively, the insulating material is a PET film.
[0016] In a second aspect, the utility model provides a battery module, comprising a plurality of battery cells as described in the first aspect, wherein the plurality of battery cells are stacked along a second direction, the second direction is perpendicular to the first direction, and the first pole and the second pole are both electrically connected to a bus.
[0017] In a third aspect, the utility model provides a battery, comprising the battery module described in the second aspect.
[0018] The utility model brings at least the following beneficial effects:
[0019] The utility model provides a battery cell, comprising: a battery cell, comprising a first pole ear and a second pole ear, the polarity of the first pole ear is opposite to the polarity of the second pole ear; a shell, the shell comprising a first shell, a second shell and an insulating ring, the insulating ring is respectively connected to the first shell and the second shell to form a accommodating cavity, the battery cell is located in the accommodating cavity; the first shell is electrically connected to the first pole ear, a first pole is arranged on the first shell, the second shell is electrically connected to the second pole ear, a second pole is arranged on the second shell, the first shell and the second shell are both covered with insulating material and the first pole and the second pole are exposed.
[0020] The first shell is electrically connected to the first pole tab, the second shell is electrically connected to the second pole tab, and both the first shell and the second shell are coated with insulating material, so that the first pole on the first shell is exposed and the second pole on the second shell is exposed. By coating different positions of the first shell and the second shell with insulating material, the exposed position can be changed, thereby changing the position of the first pole and the second pole, and changing the welding position to meet the needs of the battery module in different situations, and at the same time, it can also reduce the difficulty of voltage collection and other tasks.
[0021] 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
[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions 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 labor.
[0023] Figure 1 Schematic diagram of a battery cell provided in Example 1 of the utility model Figure 1 ;
[0024] Figure 2 Schematic diagram of a battery cell provided in Example 1 of the utility model Figure 2 ;
[0025] Figure 3 A schematic diagram of a first connecting piece provided in Embodiment 1 of the present utility model;
[0026] Figure 4 A schematic diagram of a second connecting sheet provided in Embodiment 1 of the present utility model;
[0027] Figure 5 Schematic diagram of the battery module provided in the second embodiment of the utility model Figure 1 ;
[0028] Figure 6 Schematic diagram of the battery module provided in the second embodiment of the utility model Figure 2 ;
[0029] Figure 7 Schematic diagram of the battery module provided in the second embodiment of the utility model Figure 3 .
[0030] icon:
[0031] 100 - first shell; 110 - first pole; 120 - thermal insulation pad; 130 - first connecting plate; 200 - second shell; 210 - second pole; 220 - second connecting plate; 300 - insulating ring; 400 - first side wall; 500 - second side wall; 600 - third side wall; 700 - fourth side wall. DETAILED DESCRIPTION
[0032] The technical solution of the utility model will be described clearly and completely 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.
[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0034] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present 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 present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, if not separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.
[0035] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0037] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0038] Embodiment 1
[0039] The positions of the positive and negative poles of the battery cells in the existing battery modules are relatively fixed. The battery cells cannot flexibly change the exposed position of the shell according to the characteristics of the battery cells, and then change the positions of the positive and negative poles and the welding positions. Therefore, they cannot adapt to the needs of the battery module in different situations, which causes certain difficulties in voltage collection and other tasks.
[0040] In view of this, an embodiment of the utility model provides a battery cell, including: a battery cell, including a first pole ear and a second pole ear, the polarity of the first pole ear is opposite to the polarity of the second pole ear; a shell, the shell includes a first shell 100, a second shell 200 and an insulating ring 300, the insulating ring 300 is respectively connected to the first shell 100 and the second shell 200 to form a accommodating cavity, and the battery cell is located in the accommodating cavity; the first shell 100 is electrically connected to the first pole ear, and a first pole 110 is arranged on the first shell 100, the second shell 200 is electrically connected to the second pole ear, and a second pole 210 is arranged on the second shell 200, and the first shell 100 and the second shell 200 are both coated with insulating material and the first pole 110 and the second pole 210 are exposed.
[0041] The first shell 100 is electrically connected to the first pole tab, the second shell 200 is electrically connected to the second pole tab, and both the first shell 100 and the second shell 200 are coated with insulating materials, so that the first pole 110 on the first shell 100 is exposed and the second pole 210 on the second shell 200 is exposed. By coating different positions of the first shell 100 and the second shell 200 with insulating materials, the exposed position can be changed, thereby changing the position of the first pole 110 and the second pole 210, and changing the welding position, so as to meet the needs of the battery module in different situations, and at the same time, it can also reduce the difficulty of voltage collection and other tasks.
[0042] Here are a few different ways to wrap insulation materials:
[0043] Method 1: The first shell 100 includes a first side wall 400 , the second shell 200 includes a second side wall 500 , the first side wall 400 and the second side wall 500 are arranged opposite to each other along a first direction, the first pole 110 is arranged on the first side wall 400 , and the second pole 210 is arranged on the second side wall 500 .
[0044] Furthermore, the shell is a rectangular parallelepiped, and the first direction is the length direction, wherein, in terms of size, width ≤ height < length.
[0045] See also Figure 1 In this manner, the first side wall 400 and the second side wall 500 are arranged opposite to each other along the length direction of the battery cell, and the first pole 110 and the second pole 210 are respectively arranged at the ends of the first side wall 400 and the second side wall 500. Preferably, the first pole 110 and the second pole 210 are respectively arranged at the same end sides of the first side wall 400 and the second side wall 500, that is, the first pole 110 and the second pole 210 can be respectively arranged at the top ends of the first side wall 400 and the second side wall 500, or the first pole 110 and the second pole 210 can also be respectively arranged at the bottom ends of the first side wall 400 and the second side wall 500.
[0046] Mode 2: The difference from Mode 1 is that the first direction is the width direction, and the first pole 110 and the second pole 210 are respectively arranged in the middle of the first side wall 400 and the second side wall 500 .
[0047] See also Figure 3 and Figure 4 In this manner, the first side wall 400 and the second side wall 500 are arranged opposite to each other along the width direction of the battery cell, and the first pole 110 and the second pole 210 are respectively arranged in the middle of the first side wall 400 and the second side wall 500. Figure 3 The configuration of the first pole 110 on the first side wall 400 is shown, and the first pole 110 is welded with a first connecting piece 130 . Figure 4 The second pole 210 is arranged on the second side wall 500. The second pole 210 is welded with a second connecting piece 220, and the second connecting piece 220 is also connected to a spring. A heat insulation pad 120 can also be installed on the first side wall 400 and / or the second side wall 500. The heat insulation pad 120 is provided with a perforation for exposing the first pole 110 or the second pole 210. The heat insulation pad 120 can have a good heat insulation performance.
[0048] Method three: The difference from method one is that the first shell 100 includes a third side wall 600, the second shell 200 includes a fourth side wall 700, the third side wall 600 and the fourth side wall 700 are located on the same plane, the first pole 110 is arranged on the third side wall 600, and the second pole 210 is arranged on the fourth side wall 700.
[0049] For details, please see Figure 2 In this way, the third side wall 600 and the fourth side wall 700 can be both located on the top surface or both located on the bottom surface. Preferably, the first pole 110 and the second pole 210 are located on opposite sides of the same plane, that is, the first pole 110 and the second pole 210 are arranged away from each other.
[0050] In the above three methods, the insulating material is epoxy resin, and the epoxy resin is coated on the outer surface of the shell by nano injection molding process; or, the insulating material is PET film.
[0051] By performing nano-injection molding on the shell surface, the epoxy resin material is integrated with the shell, which not only plays a fixing role but also insulates the outer wall of the shell from the outside. The specific process method is: the shell surface is treated before injection molding, and the grease on the inner wall and bottom of the shell is removed by alkaline etching inside the shell to ensure that the inner wall and bottom of the shell are free of grease, and larger nano-holes are etched by pickling; then electrochemical treatment is performed to further etch small-sized nano-holes on the inner wall and bottom of the shell. Nano-injection molding materials such as epoxy resin are chemically resistant, have strong adsorption capacity for metals, and have better heat resistance and electrical insulation.
[0052] The coating method of the PET film is as follows: the PET film is adhered to the outer surface of the shell through the adhesive layer, so that the PET film is coated on the shell.
[0053] Embodiment 2
[0054] The embodiment of the utility model provides a battery module, including multiple battery cells of the first embodiment, the multiple battery cells are stacked along a second direction, the second direction is perpendicular to the first direction, and the first pole 110 and the second pole 210 are both electrically connected to a bus bar.
[0055] Corresponding to the first embodiment, this embodiment also provides three welding methods.
[0056] Method 1: Corresponds to the method 1 of coating the insulating material in Example 1. Figure 5 The plurality of battery cells are arranged alternately along the width direction of the battery cells, and between two adjacent battery cells, the first pole 110 of one battery cell is welded to the second pole 210 of another battery cell.
[0057] Method 2: Corresponds to the method 2 of coating the insulating material in Example 1. Figure 7 The plurality of battery cells are arranged alternately along the width direction of the battery cells, and between two adjacent battery cells, the first pole 110 of one battery cell is welded to the second pole 210 of another battery cell.
[0058] Method 3: corresponds to the method 3 of coating the insulating material in embodiment 1. Figure 6 The plurality of battery cells are arranged alternately along the width direction of the battery cells, and between two adjacent battery cells, the first pole 110 of one battery cell is welded to the second pole 210 of another battery cell.
[0059] The above three methods make it possible to change the welding position in the battery module according to the characteristics of the designed battery cells, thereby adapting to the needs of the battery module under different working conditions and reducing the difficulty of voltage collection and other tasks.
[0060] Embodiment 3
[0061] The present utility model embodiment provides a battery, including the battery module of embodiment 2. Since the battery includes all structures of the battery cell and the battery module, it has all the beneficial effects described in embodiments 1 and 2, which will not be described in detail here.
[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A battery cell, characterized in that: include: A battery cell, comprising a first pole ear and a second pole ear, wherein the polarity of the first pole ear is opposite to the polarity of the second pole ear; A shell, the shell includes a first shell, a second shell and an insulating ring, the insulating ring is respectively connected to the first shell and the second shell to form a accommodating cavity, the battery cell is located in the accommodating cavity; the first shell is electrically connected to the first pole ear, a first pole is arranged on the first shell, the second shell is electrically connected to the second pole ear, a second pole is arranged on the second shell, the first shell and the second shell are both covered with insulating material and the first pole and the second pole are exposed.
2. The battery cell according to claim 1, characterized in that: The first shell includes a first side wall, the second shell includes a second side wall, the first side wall and the second side wall are arranged opposite to each other along a first direction, the first pole is arranged on the first side wall, and the second pole is arranged on the second side wall.
3. The battery cell according to claim 2, characterized in that: The shell is a rectangular parallelepiped, and the first direction is the length direction, wherein, in terms of size, width ≤ height < length.
4. The battery cell according to claim 3, characterized in that: The first pole and the second pole are respectively disposed at ends of the first side wall and the second side wall.
5. The battery cell according to claim 2, characterized in that: The shell is a rectangular parallelepiped, and the first direction is a width direction, wherein, in terms of size, width ≤ height < length.
6. The battery cell according to claim 5, characterized in that: The first pole and the second pole are respectively arranged in the middle of the first side wall and the second side wall.
7. The battery cell according to claim 1, characterized in that: The first shell includes a third side wall, the second shell includes a fourth side wall, the third side wall and the fourth side wall are located on the same plane, the first pole is arranged on the third side wall, and the second pole is arranged on the fourth side wall.
8. The battery cell according to any one of claims 1 to 7, characterized in that: The insulating material is epoxy resin, and the epoxy resin is coated on the outer surface of the shell by nano injection molding process; Alternatively, the insulating material is a PET film.
9. A battery module, characterized in that: It comprises a plurality of battery cells according to any one of claims 1 to 8, wherein the plurality of battery cells are stacked along a second direction, the second direction is perpendicular to the first direction, and the first pole and the second pole are both electrically connected to a bus bar.
10. A battery, characterized in that: A battery module comprising the battery module described in claim 9.