CN217955980U

CN217955980U - Lithium ion battery pack with high energy density

Info

Publication number: CN217955980U
Application number: CN202221791124.2U
Authority: CN
Inventors: 欧阳桂荣; 肖利隆; 肖文杰
Original assignee: Shenzhen Honcell Energy Co ltd
Current assignee: Shenzhen Honcell Energy Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-12-02
Anticipated expiration: 2032-07-12

Abstract

The utility model discloses a high energy density's lithium ion battery group, including electric core, the laminating of electric core surface has the labeling, and the both ends of electric core are equipped with the fixed block through labeling and electric core integration adhesion respectively, are equipped with the fixed orifices that is used for fixed electric core on the fixed block. The utility model discloses a high energy density's lithium ion battery group has that energy density is high, the assembly is convenient, the suitability is strong and low cost's characteristics.

Description

Lithium ion battery pack with high energy density

Technical Field

The utility model relates to a lithium ion battery technical field specifically indicates a lithium ion battery group of high energy density.

Background

In a lithium ion battery, in order to effectively fix a battery cell in an inner cavity, a frame body and a way of performing injection molding by respectively arranging steel plates on the upper side and the lower side of the frame body are generally adopted, and the structure is the same as that of the Chinese utility model 2022205201416.

The injection molding process of the frame structure injection molding battery pack is relatively complicated, and the frame and the steel plate need to occupy more volume space, so that the improvement of the energy density of the lithium ion battery is effectively restricted, and the application requirement of high energy density cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lithium ion battery group of high energy density has that energy density is high, the assembly is convenient, the suitability is strong and low cost's characteristics.

The utility model discloses can realize through following technical scheme:

the utility model discloses a high energy density's lithium ion battery group, including electric core, the laminating of electric core surface has the labeling, and the both ends of electric core are equipped with the fixed block through labeling and electric core integration adhesion respectively, are equipped with the fixed orifices that is used for fixed electric core on the fixed block.

Further, the fixed block is including laminating in the backplate of electric core terminal surface, and the backplate outside is equipped with the flange pair perpendicularly, and the flange is to including two flanges that are parallel to each other, and two flange clearance formula form the fixed orifices, and simple structure makes things convenient for processing and fixes with carrying on electric core.

Furthermore, the number of the convex plate pairs is two, and the two convex plate pairs are arranged at two ends of the back plate at intervals, so that the fixing effect of the battery cell is effectively guaranteed.

Furthermore, the labels are simultaneously attached to the negative side and the positive side of the battery cell, the shapes of the labels on the negative side and the positive side are the same, the fixing effect is good, and the label control consistency is high.

Furthermore, the length of the label is larger than or equal to the sum of the length of the battery cell and the thickness of the double back plate, and the label is conveniently attached and fixed.

Further, the width of the back plate is consistent with the thickness of the battery cell, and the length of the back plate is smaller than or equal to the width of the battery cell, so that the back plate is convenient to fit and fix.

Furthermore, the battery cell is a square soft-package lithium ion battery cell or an aluminum shell lithium ion battery cell, and has good size matching performance.

Furthermore, the battery cell is a lithium iron phosphate battery cell, a lithium manganate battery cell, a lithium cobaltate battery cell or a ternary material lithium ion battery cell, and the use requirements of different types of lithium ion battery packs are met.

Further, the fixed block is an engineering plastic block, and the engineering plastic is PE plastic, PP plastic, PVC plastic, PET plastic, PS plastic or ABS plastic. The fixing block with the corresponding structure can be obtained through injection molding, the process is simple, the structure control consistency is high, and the materials are wide and easy to obtain.

The utility model relates to a lithium ion battery group of high energy density has following beneficial effect:

firstly, the energy density is high, the battery pack of the utility model adopts the mode of integrally adhering the label and the battery cell through the fixed block, thereby simplifying the structure of the length side of the frame body, and effectively saving the space of the fixed structure without using steel plate pressing, and the space of the fixed structure can be fully utilized by the battery cell, thereby effectively improving the energy density of the battery pack;

secondly, the assembly convenience is high, the fixing blocks are integrally adhered by adopting labels, and the two steps of label adhering and fixing structure adhering are combined into a whole, so that the operation steps are effectively simplified, and the complexity of adopting an injection molding fixing mode is avoided;

thirdly, the applicability is strong, the size of the battery cell is not limited by the size of the frame body by adopting a mode of integrally adhering the fixing block and the battery cell, and the fixing requirements of the battery cells with different sizes can be met as long as the attaching surface of the fixing block is ensured to be identical or smaller than the size of the end face of the battery cell;

fourth, low cost, the group battery of adopting this structure has structurally optimized the frame structure and has cancelled the steel sheet, and not only effective material cost is saved simplifies the assembly link again and saves the operating cost in the process.

Drawings

Fig. 1 is a schematic view of an exploded structure of a high energy density lithium ion battery pack according to the present invention;

fig. 2 is a schematic diagram of a fixed block structure of a high energy density lithium ion battery pack of the present invention;

fig. 3 is a schematic diagram of a cell structure of a high energy density lithium ion battery pack of the present invention;

the reference numbers in the figures include: 100. an upper fixing block; 101. a back plate; 102. a convex plate; 103. a fixing hole; 200. an electric core; 201. A cell body; 202. labeling; 300. And a lower fixing block.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following provides a detailed description of the product of the present invention with reference to the embodiments and the accompanying drawings.

As shown in fig. 1-3, the utility model discloses a lithium ion battery group of high energy density, including electric core 200, the laminating of electric core surface has label 202, specifically, label 202 laminating is on electric core body 101. The two ends of the battery cell 200 are respectively provided with an upper fixing block 100 and a lower fixing block 300 which are integrally adhered to the battery cell body 201 through a label 202.

The upper fixing block 100 and the lower fixing block 300 are fixing blocks with the same shape and structure. In the above fixing block as an example, the upper fixing block 100 is provided with a fixing hole 103 for fixing the battery cell 200. Specifically, the fixing block 100 includes a back plate 101 attached to the end surface of the electrical core, a pair of protruding plates is vertically disposed outside the back plate 101, the pair of protruding plates includes two protruding plates 102 parallel to each other, and the two protruding plates 102 form a fixing hole 103 in a clearance manner.

In order to ensure the fixing effect of the battery cell, the number of the convex plate pairs is two, and the two convex plate pairs are arranged at two ends of the back plate at intervals. Simultaneously, the labeling shape of the labeling simultaneously laminating in the cloudy face of electric core and sunny side and two sides is the same, and it is fixed effectively to carry out the adhesion to fixed block and electric core.

In the aspect of size control, in order to ensure the accuracy of assembly and the fixing effect, the length of the label is greater than or equal to the sum of the length of the battery cell and the thickness of the double back plate; the width of the back plate is consistent with the thickness of the battery cell, and the length of the back plate is less than or equal to the width of the battery cell.

In use, the utility model discloses a structure can effectively satisfy square battery's assembly demand, and electric core specifically is square soft packet of lithium ion battery cell or aluminum hull lithium ion battery cell.

In the aspect of applicability, the battery cell is a lithium iron phosphate battery cell, a lithium manganate battery cell, a lithium cobaltate battery cell or a ternary material lithium ion battery cell. The fixed block is an engineering plastic block, and the engineering plastic is PE plastic, PP plastic, PVC plastic, PET plastic, PS plastic or ABS plastic.

In the description of the present invention, it is to be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above embodiments are only specific embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, many variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.

Claims

1. The utility model provides a lithium ion battery group of high energy density, includes electric core, its characterized in that: the laminating of electricity core surface has the labeling, the both ends of electricity core are equipped with the fixed block through labeling and the adhesion of electricity core integration respectively, be equipped with the fixed orifices that is used for fixed electricity core on the fixed block.

2. The high energy density lithium ion battery of claim 1, wherein: the fixed block comprises a back plate attached to the end face of the battery cell, a convex plate pair is vertically arranged on the outer side of the back plate and comprises two convex plates which are parallel to each other, and the two convex plates form a fixed hole in a clearance mode.

3. The high energy density lithium ion battery of claim 2, wherein: the number of the convex plate pairs is two, and the two convex plate pairs are arranged at two ends of the back plate at intervals.

4. The high energy density lithium ion battery of claim 3, wherein: the labels are simultaneously attached to the female side and the male side of the battery cell, and the labels on the two sides are identical in shape.

5. The high energy density lithium ion battery of claim 4, wherein: the length of the label is greater than or equal to the sum of the length of the battery core and the thickness of the double back plate.

6. The high energy density lithium ion battery of claim 5, wherein: the width of the back plate is consistent with the thickness of the battery cell, and the length of the back plate is smaller than or equal to the width of the battery cell.

7. The high energy density lithium ion battery of claim 6, wherein: the battery cell is a square soft package lithium ion battery cell or an aluminum shell lithium ion battery cell.

8. The high energy density lithium ion battery of claim 7, wherein: the battery cell is a lithium iron phosphate battery cell, a lithium manganate battery cell, a lithium cobaltate battery cell or a ternary material lithium ion battery cell.

9. The high energy density lithium ion battery of claim 8, wherein: the fixed block is an engineering plastic block.

10. The high energy density lithium ion battery of claim 9, wherein: the engineering plastic is PE plastic, PP plastic, PVC plastic, PET plastic, PS plastic or ABS plastic.