CN114335852A

CN114335852A - Lithium battery shell

Info

Publication number: CN114335852A
Application number: CN202011076820.0A
Authority: CN
Inventors: 杨德财; 杨尚勇; 娄隆圣; 连抒翔; 周立威
Original assignee: Fujian Super Power New Energy Co ltd
Current assignee: Fujian Super Power New Energy Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2022-04-12

Abstract

The invention discloses a lithium battery shell which comprises an upper shell and a lower shell, wherein accommodating grooves for accommodating lithium battery cells are respectively arranged on the opposite sides of the upper shell and the lower shell. The edge of epitheca is provided with first buckle spare, be equipped with on the corresponding position in edge of inferior valve be used for with the second buckle spare of first buckle spare looks joint. The upper shell and the lower shell are fixed through mutual clamping of the first clamping piece and the second clamping piece. The invention provides a lithium battery shell, wherein a first buckling piece is arranged at the edge of an upper shell, a second buckling piece is arranged at the edge of a lower shell, and the upper shell and the lower shell are fixed by mutually clamping the first buckling piece and the second buckling piece, so that the displacement of a battery cell in the shell in the vertical direction can be effectively limited, the risk of dislocation and falling of the upper shell and the lower shell is reduced, and the product stability is improved.

Description

Lithium battery shell

Technical Field

The invention relates to the technical field of lithium batteries, in particular to a lithium battery shell.

Background

The lithium battery is used as an energy battery with high reaction efficiency, strong safety and small volume, and is more and more widely applied, particularly widely applied in the fields of electric automobiles, electric ships and the like. The lithium battery is generally installed in a lithium battery shell, the lithium battery shell generally comprises a shell wall and a shell cover, an installation space of the lithium battery is formed by the shell wall and the shell cover in a surrounding mode, and the shell wall and the shell cover are locked and fixed through a screw after the lithium battery is placed in the installation space. Because the shell wall and the shell cover are both a thin steel shell or an aluminum shell, the fixing mode easily causes large deformation of the whole module in the vertical direction and poor shock resistance, and causes insufficient operation stability of the whole system; meanwhile, in the transportation process or the long-term use process, phenomena such as dislocation, falling and the like are easy to occur between the shell wall and the shell cover, and the product stability is influenced.

Disclosure of Invention

In view of the technical problems in the background art, an object of the present invention is to provide a lithium battery case with reliable connection, strong impact resistance and good stability.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a lithium battery shell, includes epitheca and inferior valve, the opposite side of epitheca and inferior valve is equipped with the storage tank that is used for holding lithium battery electricity core respectively. The edge of epitheca is provided with first buckle spare, be equipped with on the corresponding position in edge of inferior valve be used for with the second buckle spare of first buckle spare looks joint. The upper shell and the lower shell are fixed through mutual clamping of the first clamping piece and the second clamping piece.

In one embodiment, the first buckling piece comprises a plurality of clamping protrusions arranged along the edge of the upper shell, the second buckling piece comprises a plurality of clamping holes arranged along the edge of the lower shell, and the upper shell and the lower shell are fixed through clamping matching of the clamping protrusions and the clamping holes.

In another embodiment, the first fastener comprises a plurality of fastening holes arranged along the edge of the upper shell, the second fastener comprises a plurality of fastening protrusions arranged along the edge of the lower shell, and the upper shell and the lower shell are fixed by the fastening of the fastening protrusions and the fastening holes.

In another embodiment, the first fastening member includes a plurality of first fastening protrusions and a plurality of first fastening holes disposed along the edge of the upper case, the second fastening member includes a plurality of second fastening protrusions and a plurality of second fastening holes disposed along the edge of the lower case, and the first fastening protrusions and the second fastening protrusions are fastened and fixed with the second fastening holes and the first fastening holes respectively.

Preferably, the first clamping protrusions and the first clamping holes are sequentially and alternately arranged, and the second clamping holes and the second clamping protrusions are sequentially and alternately arranged.

Further, in order to improve the overall structural strength of the upper/lower case, reinforcing ribs are respectively provided on the outer surfaces of the upper and lower cases.

Preferably, the reinforcing ribs comprise a plurality of transverse reinforcing ribs arranged along the length direction of the shell and a plurality of longitudinal reinforcing ribs arranged along the width direction of the shell, and the transverse reinforcing ribs and the longitudinal reinforcing ribs are arranged in a staggered mode.

Furthermore, the shape of the upper shell and the shape of the lower shell are both rectangular, the edges of two sides and the rear side of the upper shell are respectively provided with a first buckling piece, and the edges of two sides and the rear side of the lower shell are respectively provided with a second buckling piece.

Further, the front side edge of epitheca upwards buckles and forms first bending plate, the front side edge of inferior valve buckles and forms the second bending plate downwards, first bending plate and second bending plate between form the installation open slot that is used for installing battery tab support and battery busbar.

Further, the rear upper surface of inferior valve is equipped with the first arch of a plurality of, the epitheca bottom is in it is protruding to be equipped with a plurality of second on the relative position of first arch, and the bellied lower surface of first bellied upper surface and second is laminated mutually, has seted up the riveting hole respectively on the relative position of first arch and second arch.

The invention has the following beneficial effects:

1. the buckling structures are arranged on the two side edges and the back edge of the shell, so that the displacement of the internal battery cell in the vertical direction can be effectively limited, the risk of dislocation and falling of the upper shell and the lower shell is reduced, and the product science stability is improved;

2. the outer surfaces of the upper shell and the lower shell are respectively provided with the reinforcing ribs, so that the integral structural strength of the module is increased, the deformation quantity of the module in the vertical direction is reduced, the anti-seismic and anti-impact capacity is improved, and the system operation stability is improved;

3. inferior valve top sets up first arch, and the epitheca bottom sets up the second arch, and first arch and second are protruding to be laminated each other and are equipped with the riveting hole respectively, make things convenient for module riveting fastening.

Drawings

Fig. 1 is a schematic perspective view of a lithium battery case according to a first embodiment.

Fig. 2 is an exploded view of the part of fig. 1.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 4 is a schematic perspective view of a lithium battery case according to another angle in the first embodiment.

Fig. 5 is a partially enlarged view of a portion B in fig. 4.

Fig. 6 is a schematic perspective view of a lithium battery case according to a second embodiment.

Fig. 7 is a partially enlarged schematic view of a portion C in fig. 6.

Fig. 8 is a schematic perspective view of a lithium battery case according to a third embodiment.

Fig. 9 is a partially enlarged view of portion D of fig. 8.

Description of the main component symbols: 10. a containing groove; 100. reinforcing ribs; 1001. transverse reinforcing ribs; 1002. longitudinal reinforcing ribs; 101. a first snap projection; 102. a first card hole; 103. a second snap projection; 104. a second card hole; 105. installing an open slot; 106. riveting holes; 107. clamping convex; 108. a clamping hole; 11. an upper shell; 111. a first bending plate; 112. a second protrusion; 12. a lower case; 121. a second bending plate; 122. a first protrusion.

Detailed Description

The invention is further described with reference to the following drawings and detailed description.

Example one

As shown in fig. 1 to 5, a lithium battery casing includes an upper casing 11 and a lower casing 12, and opposite sides of the upper casing 11 and the lower casing 12 are respectively provided with a receiving groove 10 for receiving a lithium battery cell. The edge of the upper shell 11 is provided with a first fastener, and the corresponding position of the edge of the lower shell 12 is provided with a second fastener which is used for being clamped with the first fastener. The upper shell 11 and the lower shell 12 are fixed by mutually clamping the first clamping piece and the second clamping piece.

In this embodiment, the first locking member includes a plurality of first locking protrusions 101 and a plurality of first locking holes 102 disposed along the edge of the upper case 11, the second locking member includes a plurality of second locking protrusions 103 and a plurality of second locking holes 104 disposed along the edge of the lower case, and the first locking protrusions 101 and the second locking protrusions 103 are respectively locked and fixed with the second locking holes 104 and the first locking holes 102. Preferably, in order to further improve the connection reliability of the upper case 11 and the lower case, the first catching projections 101 and the first catching holes 102 are alternately arranged in sequence, and the second catching holes 104 and the second catching projections 103 are alternately arranged in sequence.

The outer surfaces of the upper case 11 and the lower case 12 are provided with reinforcing ribs 100, respectively. Preferably, the reinforcing rib 100 comprises a plurality of transverse reinforcing ribs 1001 arranged along the length direction of the housing and a plurality of longitudinal reinforcing ribs 1002 arranged along the width direction of the housing, and the transverse reinforcing ribs 1001 and the longitudinal reinforcing ribs 1002 are arranged in a staggered manner.

The shape of the upper shell 11 and the lower shell 12 are rectangular, the two side edges and the rear side edge of the upper shell 11 are respectively provided with a first fastener, and the two side edges and the rear side edge of the lower shell 12 are respectively provided with a second fastener. The front side edge of the upper shell 11 is bent upwards to form a first bending plate 111, the front side edge of the lower shell 12 is bent downwards to form a second bending plate 121, and an installation opening groove 105 for installing a battery tab support and a battery bus bar is formed between the first bending plate 111 and the second bending plate 121.

The rear upper surface of inferior valve 12 is equipped with the first arch 122 of a plurality of, and 11 bottoms of epitheca are equipped with the protruding 112 of a plurality of second on the relative position of first arch 122, and the upper surface of first arch 112 and the lower surface of the protruding 122 of second are laminated mutually, have seted up riveting hole 106 on the relative position of first arch 112 and second arch 122 respectively.

The buckle structures are arranged on the two side edges and the back edge of the shell of the embodiment, so that the displacement of the internal battery core in the vertical direction can be effectively limited, the risk of dislocation and falling of the upper shell and the lower shell is reduced, and the product stability is improved. The surface of epitheca 11/inferior valve 12 has set up strengthening rib 100 respectively, increases the holistic structural strength of module, reduces the deformation volume of module vertical direction, promotes antidetonation shock resistance, improves system operation stability.

Example two

As shown in fig. 6 and 7, the present embodiment differs from the first embodiment only in that: first buckle spare includes along the protruding 107 of a plurality of card that upper casing 11 edge set up, and second buckle spare includes along a plurality of card hole 108 of inferior valve edge setting, and upper casing 11 and inferior valve 12 are fixed through the joint cooperation realization of protruding 107 of card and card hole 108. The rest of the structure and principle of the embodiment are the same as those of the first embodiment.

EXAMPLE III

As shown in fig. 8 and 9, the present embodiment is different from the present embodiment only in that: first buckle spare includes along a plurality of card hole 108 of 11 marginal settings on the epitheca, and second buckle spare includes along the protruding 107 of a plurality of card that 12 marginal settings on the inferior valve, and epitheca 11 and inferior valve 12 are fixed through the joint cooperation realization of protruding 107 of card and card hole 108. The rest of the structure and principle of the embodiment are the same as those of the first embodiment.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A lithium battery case, characterized in that: including epitheca and inferior valve, the opposite side of epitheca and inferior valve is equipped with the storage tank that is used for holding lithium cell electricity core respectively, the edge of epitheca is provided with first buckle spare, be equipped with on the corresponding position in edge of inferior valve be used for with the second buckle spare of first buckle spare looks joint, epitheca and inferior valve pass through the mutual joint of first buckle spare and second buckle spare is realized fixedly.

2. A lithium battery cell casing according to claim 1, wherein: first buckle spare include along a plurality of card protruding that the epitheca edge set up, second buckle spare include along a plurality of card hole that inferior valve edge set up, epitheca and inferior valve pass through the protruding joint cooperation with calorie hole of card realizes fixing.

3. A lithium battery cell casing according to claim 1, wherein: first buckle spare include along a plurality of card hole that the epitheca edge set up, second buckle spare include along a plurality of card protruding that the inferior valve edge set up, epitheca and inferior valve pass through the card is protruding to be fixed with the joint cooperation realization in card hole.

4. A lithium battery cell casing according to claim 1, wherein: first buckle spare include along the protruding and the first card hole of a plurality of the first card that the epitheca edge set up, second buckle spare include along protruding and a plurality of second card hole of a plurality of second card that inferior valve edge set up, first card protruding, second card protruding respectively with second card hole, first card hole joint are fixed.

5. A lithium battery cell casing according to claim 4, wherein: the first clamping bulges and the first clamping holes are sequentially and alternately arranged, and the second clamping holes and the second clamping bulges are sequentially and alternately arranged.

6. A lithium battery casing according to any one of claims 2-5, characterized in that: and reinforcing ribs are respectively arranged on the outer surfaces of the upper shell and the lower shell.

7. A lithium battery cell casing according to claim 6, wherein: the reinforcing ribs comprise a plurality of transverse reinforcing ribs arranged along the length direction of the shell and a plurality of longitudinal reinforcing ribs arranged along the width direction of the shell, and the transverse reinforcing ribs and the longitudinal reinforcing ribs are arranged in a staggered mode.

8. A lithium battery cell casing according to claim 1, wherein: the appearance shape of epitheca and inferior valve is the rectangle, and the both sides edge and the rear edge of epitheca are provided with first buckle spare respectively, and the both sides edge and the rear edge of inferior valve are provided with second buckle spare respectively.

9. A lithium battery cell casing as in claim 8, wherein: the utility model discloses a battery tab support, including the lower casing, the front side edge of epitheca is upwards buckled and is formed first bending plate, the front side edge of inferior valve is buckled downwards and is formed the second bending plate, first bending plate and second bending plate between form the installation open slot that is used for installing battery tab support and battery busbar.

10. A lithium battery cell casing as in claim 9, wherein: the rear upper surface of inferior valve is equipped with the first arch of a plurality of, the epitheca bottom is in it is protruding to be equipped with a plurality of second on the relative position of first arch, and the bellied lower surface of first bellied upper surface and second is laminated mutually, has seted up the riveting hole respectively on the relative position of first arch and second arch.