CN219476878U - Battery pack with good inner and outer shell fixing effect - Google Patents

Abstract

The utility model discloses a battery pack with good fixing effect of an inner shell and an outer shell, which comprises an L-shaped inner shell, an inner hollow outer shell and a rear baffle plate, wherein the L-shaped inner shell is arranged inside the outer shell in a drawer mode, the L-shaped inner shell comprises a fixed side wall and a connecting plate vertically connected with the fixed side wall, a fixed key is arranged on the fixed side wall, a fixed screw hole is arranged at the end part of the connecting plate, a buckle limiting block is arranged between the fixed side wall and the outer shell, the fixed key is movably embedded into the buckle limiting block to realize the fixed connection of the outer shell and one end part of the inner shell, and the rear baffle plate is movably screwed into the fixed screw hole through a fixed screw to realize the fixed connection of the outer shell and the other end part of the inner shell. The battery pack with the good fixing effect of the inner and outer shells has the characteristics of good fixing effect, convenience in operation and high energy density.

Description

Battery pack with good inner and outer shell fixing effect

Technical Field

The utility model relates to the technical field of lithium ion batteries, in particular to a battery pack with good fixing effect of an inner shell and an outer shell.

Background

In lithium ion batteries, a plastic shell is generally adopted to seal an electric core in an inner cavity of a shell, and the current mainstream technology is to adopt a split type shell to carry out ultrasonic press molding. For example, chinese patent No. CN217035753U discloses a high energy density injection molded battery with charge display function, which comprises a frame, and an upper shell plate and a lower shell plate closing the upper and lower ends of the frame, wherein the frame, the upper shell plate and the lower shell plate form a closed cell accommodating cavity, and the battery has the characteristics of high energy density, long service life, high safety, convenient use and good portability.

However, the battery pack with the structure can only be applied to a frame structure, the effect of ultrasound directly influences the fixing effect of the battery pack structure, the structure limits the improvement of the energy density, and the operation is relatively complicated.

Disclosure of Invention

The utility model aims to provide a battery pack with good fixing effect of an inner shell and an outer shell, and the battery pack has the characteristics of good fixing effect, convenience in operation and high energy density.

The utility model can be realized by the following technical scheme:

the utility model discloses a battery pack with good fixing effect of an inner shell and an outer shell, which comprises an L-shaped inner shell, an inner hollow outer shell and a rear baffle plate, wherein the L-shaped inner shell is arranged inside the outer shell in a drawer mode, the L-shaped inner shell comprises a fixed side wall and a connecting plate vertically connected with the fixed side wall, a fixed key is arranged on the fixed side wall, a fixed screw hole is arranged at the end part of the connecting plate, a buckle limiting block is arranged between the fixed side wall and the outer shell, the fixed key is movably embedded into the buckle limiting block to realize the fixed connection of the outer shell and one end part of the inner shell, and the rear baffle plate is movably screwed into the fixed screw hole through a fixed screw to realize the fixed connection of the outer shell and the other end part of the inner shell.

Further, the connecting plate is hollow, a protective plate fixing groove is formed in the connecting plate, the protective plate is embedded and limited in the protective plate fixing groove, visual positioning and assembly are achieved, the operation process is simplified, and the inner space can be fully utilized in structural design for compact utilization.

Further, the connecting plate is also provided with a battery cell positioning groove, and the battery cell positioning groove is adjacent to the fixing groove of the protection plate at intervals, so that a compact structural space is formed, and the space utilization rate is improved. .

Further, the buckle limiting block is an elastic plastic cover body, elastic plastic is PA66, PA610 or TPE, operation is convenient, and hand feeling is good.

Further, the L-shaped inner shell and the L-shaped outer shell are plastic shells, and the plastic shells are PE shells, PP shells, PVC shells, PET shells, PS shells or ABS shells, so that plastic can be flexibly selected for injection molding according to actual needs, and the processing cost is reduced.

Further, the cell positioning groove is a plurality of half-moon-shaped grooves which are arranged in parallel, and a plurality of parallel cells are electrically connected in parallel or in series, so that the cell positioning groove has larger structural design flexibility and meets different use requirements.

Further, the battery cell positioning groove is movably fixed with a cylindrical battery cell, and the cylindrical 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, so that the battery cell positioning groove has larger battery cell selection flexibility and meets different use requirements.

Furthermore, the fixed keys are silica gel keys or PPSU keys, so that the service life of the fixed keys is long.

Further, the protection board is movably fixed on the protection board fixing groove through the fixing screw, so that the fixing is simple and the operation is convenient.

The battery pack with good fixing effect of the inner and outer shells has the following beneficial effects:

firstly, the fixing effect is good, the inner shell and the outer shell are fixedly connected from the two end parts of the connecting plate respectively, the fixing is very firm, and the loosening risk is avoided;

secondly, the structure is convenient to operate, the fixed connection between the inner shell and the outer shell can be completed through visual operation, and the operation process and steps are simplified;

thirdly, the energy density is high, through setting up fixed connection structure at the both ends of connecting plate, need not to squeeze up the space of taking up the shell inside, make the interior space of shell fully utilized by electric core and protection shield, thereby furthest has promoted volume utilization ratio and has promoted volume energy density.

Drawings

FIG. 1 is a schematic diagram showing an exploded structure of a battery pack with a good fixing effect of an inner and outer case according to the present utility model;

FIG. 2 is a schematic diagram of the structure of an inner shell of a battery pack with good fixing effect of the inner shell and the outer shell;

FIG. 3 is a schematic view of a structure of a tailgate of a battery pack with good fixing effect of an inner case and an outer case according to the utility model;

the labels in the drawings include: 100. an inner case; 101. fixing the side wall; 102. a connecting plate; 103. fixing the keys; 104. a protective plate fixing groove; 105. a cell positioning groove; 106. fixing the screw holes; 200. a protective plate; 300. A battery cell; 400. a buckle limiting block; 500. a housing; 600. a rear baffle.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the following further details of the present utility model will be described with reference to examples and drawings.

As shown in fig. 1-3, the utility model discloses a battery pack with good fixing effect of an inner shell and an outer shell, which comprises an L-shaped inner shell 100, an inner hollow outer shell 500 and a backstop/600, wherein the L-shaped inner shell 100 is arranged inside the outer shell 500 in a drawer mode, the L-shaped inner shell 100 comprises a fixed side wall 101 and a connecting plate 102 which is vertically connected with the fixed side wall 101, a fixed key 103 is arranged on the fixed side wall 101, a fixed screw hole 106 is arranged at the end part of the connecting plate 102, a buckle limiting block 400 is arranged between the fixed side wall 102 and the outer shell 500, the fixed key 103 is movably embedded into the buckle limiting block 400 to realize the fixed connection between the outer shell 500 and one end part of the inner shell 100, and the backstop 600 is movably screwed into the fixed screw hole 106 through a fixed screw to realize the fixed connection between the outer shell 500 and the other end part of the inner shell 100.

As shown in fig. 1-3, in order to provide space utilization, the connecting plate 102 is arranged in the hollow space, the inside of the connecting plate 102 is provided with a protecting plate fixing groove 104, and the protecting plate 200 is embedded and limited in the protecting plate fixing groove 104; the connection plate 102 is further provided with a cell positioning groove 105, and the cell positioning groove 105 is adjacent to the protection plate fixing groove 104 at intervals. .

In the utility model, in terms of material selection, the buckle limiting block is an elastic plastic cover body, and the elastic plastic is PA66, PA610 or TPE. The L-shaped inner shell and the L-shaped outer shell are plastic shells, and the plastic shells are PE shells, PP shells, PVC shells, PET shells, PS shells or ABS shells. The fixed key is a silica gel key or a PPSU key.

In the utility model, in the product design, the cell positioning groove is a plurality of half-moon-shaped grooves which are arranged in parallel, and a plurality of parallel cells are electrically connected in parallel or in series. The battery cell positioning groove is movably fixed with a cylindrical battery cell, and the cylindrical 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.

In the description of the present utility model, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present 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 configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing examples are merely exemplary embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and that these obvious alternatives fall within the scope of the utility model.

Claims (9)

1. The utility model provides a group battery that inner and outer shell is fixed effectual, includes L type inner shell and hollow shell, its characterized in that: still include the backplate, L type inner shell drawer type sets up inside the shell, L type inner shell is including fixed lateral wall and the connecting plate of being connected perpendicularly with fixed lateral wall, be equipped with fixed button on the fixed lateral wall, the tip of connecting plate is equipped with fixed screw, fixed lateral wall with be provided with the buckle stopper between the shell and realize the fixed connection of shell and inner shell tip with fixed button activity embedding buckle stopper, the backplate passes through fixed screw activity screw in fixed screw and realizes the fixed connection of shell and the other tip of inner shell.

2. The battery pack having a good fixing effect of an inner and outer case according to claim 1, wherein: the connecting plate is hollow, a protective plate fixing groove is formed in the connecting plate, and the protective plate is embedded and limited in the protective plate fixing groove.

3. The battery pack having a good fixing effect of an inner and outer case according to claim 2, wherein: the connecting plate is also provided with a battery cell positioning groove, and the battery cell positioning groove is adjacent to the protective plate fixing groove at intervals.

4. A battery pack having a good fixing effect of an inner and outer case according to claim 3, wherein: the buckle limiting block is an elastic plastic cover body, and the elastic plastic is PA66, PA610 or TPE.

5. The battery pack with excellent fixing effect of the inner and outer cases according to claim 4, wherein: the L-shaped inner shell and the outer shell are plastic shells, and the plastic shells are PE shells, PP shells, PVC shells, PET shells, PS shells or ABS shells.

6. The battery pack with excellent fixing effect of the inner and outer cases according to claim 5, wherein: the battery cell positioning grooves are a plurality of half-moon-shaped grooves which are arranged in parallel, and a plurality of battery cells which are arranged in parallel are electrically connected in parallel or in series.

7. The battery pack with excellent fixing effect of the inner and outer cases according to claim 6, wherein: the battery cell positioning groove is movably fixed with a cylindrical battery cell, and the cylindrical 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.

8. The battery pack with excellent fixing effect of the inner and outer cases according to claim 7, wherein: the fixed key is a silica gel key or a PPSU key.

9. The battery pack of claim 8, wherein the inner and outer cases are secured: the protection board is movably fixed on the protection board fixing groove through a fixing screw.