Novel soft package battery cell without dislocation of top sealing edge

Abstract

The utility model provides a novel soft package battery cell with a non-dislocation top sealing edge, and relates to the field of batteries, the novel soft package battery cell with the non-dislocation top sealing edge comprises a roll core body, an aluminum plastic shell, a positive electrode lug and a negative electrode lug, the roll core body is wrapped by the aluminum plastic shell, during production, the aluminum plastic shell is placed in a top side sealing machine, and the aluminum plastic shell is placed in a top side sealing machine; the aluminum-plastic shell is positioned through the first positioning hole, so that the problems that the size is ultrahigh, the K value exceeds the standard, the interior of the battery cell is corroded and the like caused by dislocation of a top seal of the soft package battery cell due to the problems that the top of the aluminum-plastic shell is not aligned and the aluminum-plastic shell shifts when an upper clamp is used for fixing when the top and side sealing machine is used for producing the soft package battery cell can be prevented; and then the aluminum plastic shell injected with the electrolyte is sealed through the side sealing piece, the secondary sealing piece and the top sealing piece.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a novel soft-pack battery cell with a top sealing edge and no misalignment. Background Art

[0002] The existing automatic multifunctional top-side sealing packaging machine uses a clamp to produce soft-pack battery cells. The problem of top seal misalignment of the soft-pack battery cells caused by the misalignment of the top of the aluminum-plastic shell or the displacement of the aluminum-plastic shell when the upper clamp is fixed can only be reduced by improving the ability of the operator. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a new soft-pack battery cell with a top sealing edge without misalignment, which can solve the technical problem of misalignment and displacement of the aluminum-plastic shell top.

[0004] An embodiment of the present application provides a novel soft-pack battery cell with no misalignment of the top seal, comprising a roll core body, an aluminum-plastic shell, a positive electrode ear and a negative electrode ear, the aluminum-plastic shell wraps the roll core body, positioning pieces are arranged on both sides of the upper end of the aluminum-plastic shell, a first positioning hole is arranged on the positioning piece, top seals are arranged on both sides of the aluminum-plastic shell, a side seal is arranged on the other side of the aluminum-plastic shell, a second seal is arranged in the middle of the aluminum-plastic shell, a top seal is arranged on the upper end of the aluminum-plastic shell, the positive electrode ear and the negative electrode ear are both electrically connected to the upper end of the roll core body, and the positive electrode ear and the negative electrode ear both pass through the top seal and extend out of the upper end of the aluminum-plastic shell.

[0005] Preferably, the top seal, the side seal, the second seal and the top seal are all formed by hot pressing.

[0006] Preferably, the upper ends of the second-seal seals are overlapped with the top-seal seal, and the upper ends of the side-seal seals are overlapped with the top-seal seal.

[0007] Preferably, the length distance of the overlapping part between the second sealing member and the top sealing member is 2-5 mm, and the length distance of the overlapping part between the side sealing member and the top sealing member is 2-5 mm.

[0008] Preferably, second positioning holes are provided at the four corners of the upper end of the aluminum-plastic shell.

[0009] Preferably, a third positioning hole is provided at the upper end of the top seal.

[0010] Beneficial effects of the utility model:

[0011] The utility model provides a novel soft-pack battery core with no dislocation of top sealing edge, comprising a roll core body, an aluminum-plastic shell, a positive pole ear and a negative pole ear, wherein the aluminum-plastic shell wraps the roll core body, positioning pieces are arranged on both sides of the upper end of the aluminum-plastic shell, a first positioning hole is arranged on the positioning piece, top sealing pieces are arranged on both sides of the aluminum-plastic shell, a side sealing piece is arranged on the other side of the aluminum-plastic shell, a second sealing piece is arranged in the middle of the aluminum-plastic shell, a top sealing piece is arranged on the upper end of the aluminum-plastic shell, the positive pole ear and the negative pole ear are electrically connected to the upper end of the roll core body, and the positive The pole ear and the negative pole ear both extend out of the upper end of the aluminum-plastic shell through the top seal. During production, the utility model places the aluminum-plastic shell in a top-side seal packaging machine, and positions the aluminum-plastic shell through the first positioning hole, so as to prevent problems such as over-size, excessive K value, and internal corrosion of the battery cell caused by top seal misalignment of the aluminum-plastic shell and displacement of the aluminum-plastic shell when the upper clamp is fixed when the top-side seal packaging machine produces soft-pack batteries. After that, the aluminum-plastic shell injected with electrolyte is sealed by the side seal, the second seal, and the top seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 This is a structural schematic diagram from another viewing angle of the present invention.

[0015] The reference numerals are:

[0016] 1. winding core; 2. aluminum-plastic shell; 3. positioning piece; 4. first positioning hole; 5. top seal; 6. side seal; 7. second seal; 8. second positioning hole; 9. third positioning hole; 10. positive electrode ear; 11. negative electrode ear. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0019] 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.

[0020] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] 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.

[0022] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] like Figure 1-2As shown, a novel soft-pack battery cell with non-misaligned top sealing edge comprises a roll core 1, an aluminum-plastic shell 2, a positive pole ear 10 and a negative pole ear 11, the aluminum-plastic shell 2 wraps the roll core 1, positioning members 3 are arranged on both sides of the upper end of the aluminum-plastic shell 2, a first positioning hole 4 is arranged on the positioning member 3, top sealing members 5 are arranged on both sides of the aluminum-plastic shell 2, a side sealing member 6 is arranged on the other side of the aluminum-plastic shell 2, a second sealing member 7 is arranged in the middle of the aluminum-plastic shell 2, a top sealing member 5 is arranged on the upper end of the aluminum-plastic shell 2, the positive pole ear 10 and the negative pole ear 11 are electrically connected to the upper end of the roll core 1, The positive electrode ear 10 and the negative electrode ear 11 both extend out of the upper end of the aluminum-plastic shell 2 through the top seal 5. During production, the aluminum-plastic shell 2 is placed in a top-side seal packaging machine, and the aluminum-plastic shell 2 is positioned through the first positioning hole 4. This can prevent the top seal misalignment of the soft-pack battery cell caused by the top of the aluminum-plastic shell 2 not being aligned, the aluminum-plastic shell 2 shifting when the upper clamp is fixed, and other problems. The problem of excessive size, excessive K value, internal corrosion of the battery cell, etc. is prevented. Then, the aluminum-plastic shell 2 injected with electrolyte is sealed by the side seal 6, the second seal 7, and the top seal 5.

[0024] like Figure 2 As shown, in this embodiment, the top seal 5, the side seal 6, the second seal 7, and the top seal 5 are all formed by hot pressing, the upper end of the second seal 7 is overlapped with the top seal 5, the upper end of the side seal 6 is overlapped with the top seal 5, the length distance of the overlapping part between the second seal 7 and the top seal 5 is 2-5mm, the length distance of the overlapping part between the side seal 6 and the top seal 5 is 2-5mm, the side seal 6, the second seal 7, and the top seal 5 of the utility model can select a suitable width according to needs, and the length of the overlapping part can also be selected according to needs.

[0025] like Figure 1-2 As shown, Figure 1-2 As shown, in this embodiment, the four corners of the upper end of the aluminum-plastic shell 2 are provided with second positioning holes 8, and the upper end of the top seal 5 is provided with a third positioning hole 9. The second positioning holes 8 and the third positioning holes 9 can be used to further position the aluminum-plastic shell 2.

[0026] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of soft-pack battery cell with no top seal dislocation, characterized by: It includes a winding core body, an aluminum-plastic shell, a positive electrode ear and a negative electrode ear, the aluminum-plastic shell wraps the winding core body, positioning pieces are arranged on both sides of the upper end of the aluminum-plastic shell, a first positioning hole is arranged on the positioning piece, top seals are arranged on both sides of the aluminum-plastic shell, a side seal is arranged on the other side of the aluminum-plastic shell, a second seal is arranged in the middle of the aluminum-plastic shell, a top seal is arranged on the upper end of the aluminum-plastic shell, the positive electrode ear and the negative electrode ear are both electrically connected to the upper end of the winding core body, and the positive electrode ear and the negative electrode ear extend out of the upper end of the aluminum-plastic shell through the top seal.

2. According to claim 1, a novel soft-pack battery cell with no top seal dislocation, characterized in that: The top seal, the side seal, the second seal and the top seal are all formed by hot pressing.

3. According to claim 1, a novel soft-pack battery cell with no top seal dislocation is characterized in that: The upper ends of the second-seal seals are overlapped with the top-seal seal, and the upper ends of the side-seal seals are overlapped with the top-seal seal.

4. According to claim 1, a novel soft-pack battery cell with no top seal dislocation is characterized in that: The length distance between the overlapping parts of the second sealing part and the top sealing part is 2-5mm, and the length distance between the overlapping parts of the side sealing part and the top sealing part is 2-5mm.

5. According to claim 1, a novel soft-pack battery cell with no top seal dislocation is characterized in that: The four corners of the upper end of the aluminum-plastic shell are provided with second positioning holes.

6. A novel soft-pack battery cell with no top seal dislocation according to claim 1, characterized in that: A third positioning hole is arranged at the upper end of the top seal.

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