CN219303791U

CN219303791U - Lamination electricity core fixed knot constructs

Info

Publication number: CN219303791U
Application number: CN202320768782.8U
Authority: CN
Inventors: 何林; 何政贤; 丁茂青; 郑新华
Original assignee: SHENZHEN LIGHTSTAR LASER TECHNOLOGY CO LTD
Current assignee: SHENZHEN LIGHTSTAR LASER TECHNOLOGY CO LTD
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-07-04
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a laminated battery core fixing structure which comprises a laminated battery core, a frame and a fixing piece, wherein the middle part of the frame is a containing part, the laminated battery core is arranged in the containing part, a plurality of fixing pieces are arranged, the plurality of fixing pieces are used for fixing the laminated battery core in the frame, two lug channels communicated with the outside are respectively formed in the frame, and the two lug channels are used for enabling two lugs of the laminated battery core to extend out of the containing part; compared with the prior art, the utility model has the beneficial effects that by adopting the scheme, the edge of the laminated battery cell is protected by arranging the frame, the curling phenomenon of the pole piece and the diaphragm is prevented, meanwhile, the rigidity is provided for the laminated battery cell, the fixing piece is used for enabling the laminated battery cell and the frame to form a whole, the laminated battery cell is prevented from deforming when being taken and put, and the product yield is greatly improved.

Description

Lamination electricity core fixed knot constructs

Technical Field

The utility model relates to the technical field of lithium battery manufacturing equipment, in particular to a laminated battery core fixing structure.

Background

After lamination is finished, the lamination battery core is generally fixed by adopting a method of rubberizing at the periphery or two sides of the lamination battery core, and the method has the defect that the curling phenomenon of a pole piece and a diaphragm is easy to occur, the phenomenon not only affects the attractiveness of the battery core, but also can cause the short circuit of a cathode and an anode of the battery core, so that the qualification rate of the battery core is reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a laminated cell fixing structure so as to solve the problems in the prior art. In order to achieve the above purpose, the present utility model adopts the following technical scheme:

this lamination electricity core fixed knot constructs, including lamination electricity core, still include frame and mounting, the middle part of frame is the holding part, lamination electricity core set up in the holding part, the mounting has a plurality ofly, and is a plurality of the mounting be used for with lamination electricity core is fixed in the frame, the height of frame with the thickness of lamination electricity core is unanimous, two tab passageways with outside intercommunication have been seted up on the frame respectively, two the tab passageway is used for making two tabs of lamination electricity core stretch out respectively outside the holding part.

Preferably, the accommodating portion is rectangular.

Preferably, the frame includes a first side wall and a second side wall, the first side walls are two and are arranged in parallel, the second side walls are two, and two ends of each second side wall are respectively connected with one end of the same side of the two first side walls.

Preferably, the two tab channels are respectively arranged on the two first side walls.

Preferably, the tab channel has a height smaller than the height of the first sidewall and a width smaller than the width of the first sidewall.

Preferably, the edges of the two first side walls along the length direction are respectively provided with a reinforcing edge.

Preferably, the first side wall has a concave cross section along the thickness direction thereof.

Preferably, the fixing piece is an adhesive tape.

Preferably, the plurality of fixing members are disposed on the two second side walls in a corresponding and aligned manner along the length direction of the second side walls.

Preferably, one end of each fixing piece is connected with the bottom surface of the laminated battery cell, and the other end is connected with the top surface of the laminated battery cell.

Compared with the prior art, the utility model has the beneficial effects that by adopting the scheme, the edge of the laminated battery cell is protected by arranging the frame which is consistent with the thickness of the laminated battery cell, the curling phenomenon of the pole piece and the diaphragm is prevented, meanwhile, the rigidity is provided for the laminated battery cell, the fixing piece is used for enabling the laminated battery cell and the frame to form a whole, the laminated battery cell is prevented from deforming when being taken and put, and the product yield is greatly improved.

Drawings

FIG. 1 is a schematic top view of a general assembly of one embodiment of the present utility model;

FIG. 2 is a schematic illustration of the isometric structure of the general assembly of the embodiment of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic view of the laminated cell structure of the embodiment of FIG. 1 according to the present utility model;

FIG. 4 is a schematic view of the frame structure of the embodiment of FIG. 1 according to the present utility model;

FIG. 5 is an enlarged schematic view of the embodiment A of FIG. 1 according to the present utility model;

FIG. 6 is a schematic cross-sectional view of the first sidewall of the embodiment of FIG. 1 according to the present utility model;

FIG. 7 is a schematic view of the structure of the fixing member according to the embodiment of FIG. 1;

the drawings above show: 1. lamination cell; 2. a frame; 3. a fixing member; 4. a tab channel; 21. a housing part; 221. a first sidewall; 222. a second sidewall; 223. reinforcing the edges.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right", "front", "rear" and the like are used in this specification for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

As shown in fig. 1-4, an embodiment of the present utility model is a laminated battery core fixing structure, which includes a laminated battery core 1, a frame 2 and a fixing member 3, where the middle of the frame 2 is a containing portion 21, the laminated battery core 1 is disposed in the containing portion 21, the fixing member 3 includes a plurality of fixing members 3, the fixing member 3 is used to fix the laminated battery core 1 in the frame 2, the height of the frame 2 is consistent with the thickness of the laminated battery core 1, two tab channels 4 that are communicated with the outside are respectively formed on the frame 2, and the two tab channels 4 are used to make two tabs of the laminated battery core 1 respectively extend out of the containing portion 21.

In this embodiment, lamination electric core 1 level is placed, the middle part of frame 2 forms the accommodation portion, lamination electric core 1 sets up in accommodation portion 21, a plurality of mounting 3 are fixed lamination electric core 1 in the accommodation portion 21 of frame 2, two utmost point ear passageway 4 have been seted up on the frame 2 for make two utmost point ears of lamination electric core 1 stretch out the accommodation portion respectively, it can be understood that lamination electric core 1 includes a plurality of positive plates, a plurality of negative plates and a plurality of barrier film, the positive plate sets up in the accommodation portion along the direction of height of frame 2 in proper order with the negative plate in turn, it is equipped with the barrier film to press from both sides between adjacent positive plate and the negative plate, the height of frame 2 is unanimous with the thickness of lamination electric core 1 for the edge of protection lamination electric core 1 prevents that pole piece and diaphragm from appearing the turn-up phenomenon, simultaneously for lamination electric core provides rigidity, mounting 3 is used for making lamination electric core 1 and frame 2 form an entirety, produce the deformation when preventing that lamination electric core 1 from getting to put, improve the product yield greatly.

Preferably, as shown in fig. 4, the accommodating portion 21 is rectangular.

In this embodiment, the accommodating portion 21 is rectangular to accommodate the longer lamination cell 1, and prevent the longer cell from deforming when taking and placing.

Preferably, as shown in fig. 4 to 5, the frame 2 includes two first side walls 221 and two second side walls 222, where the first side walls 221 are parallel to each other, the second side walls 222 are two, and two ends of each second side wall 222 are connected to one end of the same side of each first side wall 221.

In this embodiment, the frame 2 includes a first sidewall 221 and a second sidewall 222, lengths of the first sidewall 221 and the second sidewall 222 are unequal, the two first sidewalls 221 are respectively located on the left side and the right side and are parallel to each other, the two second sidewalls 222 are respectively located on the front side and the rear side and are parallel to each other, the left end and the right end of the second sidewall 222 on the front side are respectively connected with one end of the front side of the two first sidewalls 221, the left end and the right end of the second sidewall 222 on the rear side are respectively connected with one end of the rear side of the two first sidewalls 221, and the two first sidewalls 221 and the two second sidewalls 222 are respectively connected end to end alternately to form the frame.

In other embodiments, the accommodating portion 21 is square, the lengths of the first sidewall 221 and the second sidewall 222 are equal, and the tab channels 4 are disposed on the first sidewall 221 and/or the second sidewall 222, it can be understood that the two tab channels 4 can be disposed on the first sidewall 221, or disposed on the second sidewall 222, or disposed on the first sidewall 221, or disposed on the second sidewall 222, respectively, so as to adapt to the square laminated battery cell.

Preferably, the two tab channels 4 are respectively disposed on the two first side walls 221.

In this embodiment, two tabs of the laminated battery core 1 are respectively located at two ends far away from each other, and two tab channels 4 are respectively correspondingly arranged on two first side walls 221, so that the tabs at two ends of the laminated battery core respectively extend out of the accommodating portion 21.

Preferably, the tab channel 4 has a height smaller than the height of the first sidewall 221 and a width smaller than the width of the first sidewall 221.

Specifically, in order to protect the pole pieces and the diaphragm of the laminated battery cell 1, only the tabs at two ends extend out of the accommodating portion 21, so that the heights of the two tab channels 4 are smaller than the height of the first side wall 221, and the widths thereof are smaller than the width of the first side wall 221.

Preferably, as shown in fig. 5, the edges of the two first side walls along the length direction thereof are respectively provided with a reinforcing edge 223.

Specifically, since the tab channels 4 are formed in the first side walls 221, in order to make the first side walls 221 stronger, reinforcing edges 223 are respectively provided at the bottom portions of the two first side walls 221, so that the rigidity of the two first side walls 221 is stronger.

In other embodiments, the reinforcement edge 223 is L-shaped, and connects the first sidewall 221 and the second sidewall 222, so that the overall rigidity of the frame 2 is higher.

Preferably, as shown in fig. 6, the first sidewall 221 has a concave cross section along the thickness direction thereof.

Specifically, the top of the tab channel 4 penetrates through the first side wall 221, that is, the top of the tab channel 4 is an opening, so that the cross section of the first side wall 221 along the thickness direction is concave, and the laminated battery cell 1 is conveniently placed into the accommodating portion 21 during automatic production.

Preferably, the fixing member 3 is an adhesive tape.

Specifically, the laminated battery cell 1 and the frame 2 are connected by using the adhesive tape, so that the laminated battery cell 1 and the frame 2 are prevented from being damaged when being fixed, and insulation is facilitated.

Preferably, as shown in fig. 1 and 7, the plurality of fixing members 3 are disposed on the two second side walls 222 in a corresponding and aligned manner along the length direction of the second side walls 222.

Specifically, the plurality of fixing pieces 3 are correspondingly arranged on the two second side walls 222 along two sides of the length direction of the second side walls 222, and the fixing pieces 3 on two sides are in one-to-one correspondence, so that the lamination cell 1 and the frame 2 can be connected more stably.

Preferably, one end of each fixing piece 3 is connected to the bottom surface of the laminated battery cell 1, and the other end is connected to the top surface of the laminated battery cell 1.

Specifically, the bottom end of the adhesive tape is located on the bottom surface of the laminated battery cell 1, the second side wall 222 is wrapped in the middle of the adhesive tape, and the other end of the adhesive tape is located on the top surface of the laminated battery cell 1, so that the adhesive tape is also beneficial to being stuck during automatic production while the laminated battery cell 1 is fixed.

Further, the whole frame 2 is injection molded, i.e. the first sidewall 221, the second sidewall 222 and the reinforcing edge 223 are formed in one step, so that the whole frame has better strength.

Further, the frame 2 is made of PP or PE. The cost is saved, and meanwhile, the electrolyte cannot corrode the electrolyte.

In other embodiments, the number of fixing members 3 is one, the fixing members 3 are adhesive tapes, and the adhesive tapes wrap the laminated battery cells 1 in the frame 2 along the width direction of the accommodating portion 2121, and of course, the tabs are still exposed.

The above-described features are continuously combined with each other to form various embodiments not listed above, and are regarded as the scope of the present utility model described in the specification; and, it will be apparent to those skilled in the art from this disclosure that modifications and variations can be made without departing from the scope of the utility model defined in the appended claims.

Claims

1. The utility model provides a lamination electricity core (1) fixed knot constructs, includes lamination electricity core (1), its characterized in that still includes frame (2) and mounting (3), the middle part of frame (2) be holding portion (21), lamination electricity core (1) set up in holding portion (21), mounting (3) have a plurality ofly mounting (3) are used for with lamination electricity core (1) are fixed in frame (2), the height of frame (2) with the thickness of lamination electricity core (1) is unanimous, two with outside intercommunication tab passageway (4) have been seted up on frame (2) respectively, two tab passageway (4) are used for making two tabs of lamination electricity core (1) stretch out respectively outside holding portion (21).

2. A laminated cell (1) fixing structure according to claim 1, wherein the receiving portion (21) is rectangular.

3. The laminated cell (1) fixing structure according to claim 2, wherein the frame (2) comprises a first side wall (221) and a second side wall (222), the first side walls (221) are two and are arranged in parallel, the second side walls (222) are two, and two ends of each second side wall (222) are respectively connected with one end of the same side of the two first side walls (221).

4. A laminated cell (1) fixing structure according to claim 3, wherein two tab channels (4) are respectively formed on two first side walls (221).

5. The laminated cell (1) fixing structure according to claim 4, wherein the tab channel (4) has a height smaller than the height of the first sidewall (221) and a width smaller than the width of the first sidewall (221).

6. The laminated cell (1) fixing structure according to claim 4, wherein the edges of the two first side walls (221) along the length direction thereof are respectively provided with reinforcing edges (223).

7. A laminated cell (1) fixing structure according to claim 3, wherein the first side wall (221) has a concave shape in cross section in the thickness direction thereof.

8. The laminated cell (1) fixing structure according to claim 1, wherein the fixing member (3) is an adhesive tape.

9. A laminated cell (1) fixing structure according to claim 3, wherein a plurality of the fixing members (3) are disposed on two of the second side walls (222) in correspondence and in parallel along the length direction of the second side walls (222), respectively.

10. A laminated cell (1) fixing structure according to claim 9, wherein one end of each fixing member (3) is connected to the bottom surface of the laminated cell (1), and the other end is connected to the top surface of the laminated cell (1).