Soft package lithium battery

Abstract

The utility model discloses a soft package lithium battery, which is characterized in that the soft package lithium battery comprises a battery body and conducting strips, one end of the battery body is provided with two tabs, the number of the conducting strips is two, the two conducting strips are arranged side by side, the two conducting strips are connected through a film, and the two conducting strips are respectively connected with the corresponding tabs. According to the utility model, the two conducting strips with the set center distance are independently customized and processed to be connected with the exposed tabs of the battery body, so that the accuracy is ensured, the accuracy requirement of the subsequent process on the two conducting strips is met, the reject ratio can be effectively reduced, the assembly is convenient, and the working efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery technical field especially relates to a soft package lithium cell. BACKGROUND

[0002] Lithium battery is a small device that generates electric energy, is applied to various electronic products, and the structure of the lithium battery mainly includes a battery body and two pole ears arranged at one end of the battery body, and the pole ears and the PCBA circuit board of the client are welded to realize automatic production, so that higher precision requirements are put forward for the center distance of the exposed pole ears of the soft package lithium battery.

[0003] The center distance of the exposed pole ear part of the existing soft package lithium battery is generally 6.5mm, but due to the winding of the pole ear in the winding equipment and the twisting of the exposed pole ear by manual in the subsequent process, there will be a certain precision error, so that the accuracy of the two exposed pole ears can be ensured by the jig inspection and manual adjustment method, and the work efficiency is low and the operation is inconvenient. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a soft package lithium battery which can solve the above problems.

[0005] To achieve the above object, the utility model embodiment provides a soft package lithium battery, which comprises:

[0006] A battery body, one end of which is provided with two pole ears; and

[0007] Conductive sheets, two of which are arranged side by side, the two conductive sheets are connected by a film, and the two conductive sheets are connected with the corresponding pole ears respectively.

[0008] Optionally, it further comprises an insulating pad, which is arranged at the same end as the pole ear and abuts against the battery body, the pole ear is formed into a first connecting part abutting against the insulating pad by bending, and the conductive sheet is connected with the first connecting part.

[0009] Optionally, the error range of the center distance of the two conductive sheets is -0.15 to 0.15mm.

[0010] Optionally, one end of the conductive sheet facing the pole ear is formed with a second connecting part by bending, the second connecting part abuts against the insulating pad, and the first connecting part abuts against the upper end of the second connecting part.

[0011] Optionally, the insulating pad is a PET insulating pad.

[0012] Optionally, an aluminum plastic shell is further included, the aluminum plastic shell wraps the battery body, the conductive sheet, the adhesive sheet and the insulating pad, and an end of the conductive sheet away from the battery body extends out of the aluminum plastic shell.

[0013] Optionally, the conductive sheet is a nickel sheet.

[0014] Compared with the prior art, the utility model has the beneficial effects that: two conductive sheets with set center distances are separately customized and processed to be connected with the exposed tab of the battery body, so that the accuracy is ensured, the accuracy requirement of the two conductive sheets in the subsequent process is met, the defective rate is effectively reduced, the assembly is facilitated, and the work efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0016] Fig. 1 It is the explosion schematic view of the utility model.

[0017] Fig. 2 It is the structural schematic view of the hidden aluminum plastic shell of the utility model.

[0018] Fig. 3 It is the perspective view of the utility model.

[0019] In the drawing:

[0020] 100, battery body;110, tab;120, first connecting part;

[0021] 200, conductive sheet;210, second connecting part;

[0022] 300, adhesive sheet;

[0023] 400, insulating pad;

[0024] 500, aluminum plastic shell. DETAILED DESCRIPTION

[0025] The embodiments of the utility model will be described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the embodiments of the utility model, and cannot be understood as the limitation of the utility model.

[0026] In the description of the embodiments of the utility model, it is understood that if the embodiments of the utility model involve directional indications, for example, the directions or position relationships of up, down, left, right, front, back, inside and outside are based on the directions or position relationships shown in the drawings, which are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the devices or elements 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.

[0027] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] In the embodiments of the utility model, unless otherwise specifically defined and limited, if there are terms such as "installation", "connection", "connection", "fixing" and the like, they should be understood in a broad sense, for example, they can be fixedly connected, or they can be detachably connected, or they can be integrated. It can be mechanically connected, or it can be electrically connected. It can be directly connected, or it can be indirectly connected through an intermediate medium. It can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0029] As Figs. 1-3 shown, the utility model embodiments provide a soft package lithium battery, including battery body 100, conductive sheet 200, film 300, insulating pad 400 and aluminum plastic shell 500.

[0030] Among them, one end of the battery body 100 is provided with two tabs 110, further, the conductive sheet 200 is provided with two, two conductive sheets 200 are connected through the film 300, two conductive sheets 200 are connected with corresponding tabs 110 respectively, it is understood that two conductive sheets 200 are individually customized and processed, and the center distance of two is set according to the requirement, to ensure accuracy, specifically, the conductive sheet 200 is preferably nickel sheet, the error range of the center distance of two conductive sheets 200 is preferably-0.15 to 0.15mm, to meet the accuracy requirement of two conductive sheets in the later process, which can effectively reduce the defective rate, and is convenient to assemble, which can effectively improve the work efficiency.

[0031] In an embodiment, the insulating pad 400 is arranged at the same end as the tab 110 and abuts against the battery body 100, the tab 110 is formed into a first connecting portion 120 by bending and abutting against the insulating pad 400, specifically, the tab 110 is bent by 90 degrees to form the first connecting portion 120, the conductive sheet 200 is connected with the first connecting portion 120, that is, through the insulating pad 400 to prevent the tab 110 or the conductive sheet 200 from contacting the battery body 100 to cause short circuit, which can effectively improve the safety of the soft package lithium battery, and specifically, the insulating pad 400 is preferably a PET insulating pad 400.

[0032] In an embodiment, one end of the conductive sheet 200 facing the tab 110 is formed with a second connecting portion 210 by bending, specifically, the conductive sheet 200 is bent by 90 degrees to form the second connecting portion 210, the second connecting portion 210 abuts against the insulating pad 400, and the first connecting portion 120 abuts against the upper end of the second connecting portion 210, that is, the connection mode of the second connecting portion 210 and the first connecting portion 120 is arranged to improve the contact surface of the conductive sheet 200 and improve the stability, so as to facilitate the welding operation of the staff and improve the assembly efficiency.

[0033] In an embodiment, the aluminum plastic shell 500 wraps the battery body 100, the conductive sheet 200, the adhesive sheet 300 and the insulating pad 400 to package the soft package lithium battery, and one end of the conductive sheet 200 away from the battery body 100 extends from the aluminum plastic shell 500 to conduct electricity.

[0034] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pouch lithium battery, characterized by, Comprise: a battery body (100) provided with two tabs (110) at one end thereof; and two conductive sheets (200) arranged side by side, the two conductive sheets (200) being connected by a film (300), and the two conductive sheets (200) being connected with the corresponding tabs (110) respectively.

2. The soft package lithium battery according to claim 1, characterized in that: the center distance of the two conductive sheets (200) has an error range of -0.15 to 0.15 mm.

3. The soft-pack lithium battery of claim 1, wherein, Further comprise: an insulating pad (400) provided at the same end as the tab (110) and abutting against the battery body (100), the tab (110) being formed with a first connecting portion (120) abutting against the insulating pad (400) by bending, and the conductive sheet (200) being connected with the first connecting portion (120).

4. The soft package lithium battery according to claim 3, characterized in that: one end of the conductive sheet (200) facing the tab (110) is formed with a second connecting portion (210) by bending, the second connecting portion (210) abutting against the insulating pad (400), and the first connecting portion (120) abutting against the upper end of the second connecting portion (210).

5. The soft package lithium battery according to claim 3, characterized in that: the insulating pad (400) is a PET insulating pad.

6. The soft-pack lithium battery according to claim 3, characterized in that, Further comprise: an aluminum plastic shell (500) wrapping the battery body (100), the conductive sheet (200), the film (300) and the insulating pad (400), and the end of the conductive sheet (200) away from the battery body (100) extending out of the aluminum plastic shell (500).

7. The soft package lithium battery according to claim 1, characterized in that: the conductive sheet (200) is a nickel sheet.

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