CN211045488U

CN211045488U - Lithium ion cover plate

Info

Publication number: CN211045488U
Application number: CN201922255722.2U
Authority: CN
Inventors: 韩鑫
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-07-17
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a lithium ion apron includes base plate, locking frame, anodal dummy wafer, negative pole dummy wafer, anodal connecting piece, negative pole connecting piece, two insulating pieces and two clamp plates, the centre of base plate is equipped with an explosion-proof hole, install pad pasting and rupture membrane in the rupture hole, locking frame rigid coupling in install on the side of rupture membrane in the base plate, the locking frame include with the locking frame body of base plate rigid coupling and with locking frame body integrated into one piece's locking arch. The stopping frame in the utility model is made of polyphenyl, so as to reduce the damage of the winding core and the diaphragm; meanwhile, the design is carried out on the stop protrusion for fixing the battery roll core in the stop frame, so that the circular arc surface design is adopted on one side surface of the stop protrusion, which is in contact with the roll core, and the abrasion condition is further reduced.

Description

Lithium ion cover plate

Technical Field

The utility model belongs to the technical field of the battery apron, concretely relates to lithium ion apron.

Background

The lithium ion battery has the advantages of high battery voltage, large specific capacity, high energy density, no memory effect, long cycle life, environmental friendliness and the like, is the secondary battery which is most widely applied at present and most possibly applied to electric automobiles on a large scale, wherein a battery cover plate of the lithium battery is integrated into a whole, and a stop frame is designed in an area below an explosion-proof valve during the design, so that a diaphragm is easily damaged in the assembly and manufacturing of the battery and the operation of a vehicle, the scrapping of the process is caused, and the battery is more seriously failed, so that the safety accident is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lithium ion apron to overcome above-mentioned technical problem.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a lithium ion apron includes base plate, locking frame, positive pole leader, negative pole leader, positive connecting piece, negative pole connecting piece, two insulating pieces and two clamp plates, the centre of base plate is equipped with an explosion-proof hole, explosion-proof downthehole pad pasting and rupture membrane of installing, locking frame rigid coupling in install on the side of rupture membrane in the base plate, locking frame include with the locking frame body of base plate rigid coupling, and with locking frame body integrated into one piece and be located the locking arch that the rupture membrane below was used for fixed battery to roll up, the locking arch is including being located the rupture membrane below and following a plurality of grids that the length direction interval of locking frame body set up, and connect in the both ends of a plurality of grids and with the side arch of the side rigid coupling of locking frame body, a plurality of grids and side arch with the one side that the battery roll up the core and contact adopts the arc surface, positive pole leader with the negative pole leader connect on the locking frame body and be located the protruding side rigid coupling of locking frame body respectively On both sides of the base.

Furthermore, the stopping frame is made of polypropylene and is in a waist shape.

Furthermore, the positive pole leader, the negative pole leader, the stop frame body, the substrate, the two insulating sheets and the two pressing plates are all provided with connecting holes, the positive pole connecting piece sequentially penetrates through the positive pole leader, the stop frame body, the substrate, one of the insulating sheets and one of the pressing plates, and the top end of the positive pole connecting piece is fixedly connected with the pressing plates; the negative electrode connecting piece penetrates through the negative electrode guide piece, the stopping frame body, the base plate, the other insulating piece and the other pressing plate, and the top end of the negative electrode connecting piece is fixedly connected with the pressing plate.

Further, the positive connecting piece is a positive rivet, and the negative connecting piece is a negative rivet.

Further, two insulating pieces with two clamp plates are equallyd divide and are located the both sides in explosion-proof hole, two insulating pieces and two clamp plates all adopt kidney type pore structure.

Has the advantages that:

the stopping frame in the utility model is made of polyphenyl, so as to reduce the damage of the winding core and the diaphragm; meanwhile, a stop bulge for fixing the battery winding core in the stop frame is designed, so that a side surface of the stop bulge, which is in contact with the winding core, adopts an arc surface design, and the abrasion condition is further reduced;

the utility model discloses in establish a rectangular hole on the locking frame body that relates to, a plurality of grids design along the rectangular hole, make a plurality of grids of locking bellied can regard as exhaust grid simultaneously.

Drawings

Fig. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a schematic structural view of the stop frame of the present invention;

in the figure: 1. a substrate; 2. a stopper frame; 21. a stopper frame body; 22. a stop projection; 22-1, a grid; 22-2, side end bulges; 3. a positive tab; 4. a negative electrode tab; 5. a positive electrode connecting member; 6. a negative electrode connecting member; 7. an insulating sheet; 8. pressing a plate; 9. pasting a film; 10. an explosion-proof membrane; 11. and (4) explosion-proof holes.

Detailed Description

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the device or structure referred to must have a particular orientation and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the lithium ion cover plate of the present invention includes a base plate, a locking frame, a positive tab, a negative tab, a positive connecting member, a negative connecting member, two insulating sheets, and two pressing plates; the middle of the substrate is provided with an explosion-proof hole, one side surface of the explosion-proof hole close to the substrate is provided with a pad pasting, and the other side surface of the explosion-proof hole close to the substrate is provided with an explosion-proof film; the anode connecting piece preferably adopts an anode rivet, and the cathode connecting piece preferably adopts a cathode rivet; wherein, two insulating pieces and two clamp plates all preferably adopt waist type pore structure.

As shown in fig. 2, the stopping frame is made of polypropylene material, and includes a stopping body and a stopping protrusion integrally formed with the stopping body and used for fixing the battery roll core, wherein the stopping body is of a waist-shaped structure, a rectangular hole is formed in the middle of the stopping body and located below the explosion-proof hole, the stopping protrusion is arranged in the rectangular hole, and the stopping body is attached to one side surface of the substrate on which the explosion-proof film is mounted; the battery pack comprises a battery pack body, a plurality of grids, a plurality of battery winding cores and a plurality of locking lugs, wherein the locking lugs are arranged at the positions of rectangular holes at intervals and are arranged along the length direction of the locking rack body, the side ends of the grids are connected with the two ends of the grids and are integrally formed with one side face of the locking rack body, the grids and the side ends are protruded, the side ends of the grids are protruded, the battery winding cores are in contact with one sides of the grids, arc surface structures are adopted, and the positive pole leading pieces and the negative pole leading pieces are connected to the locking rack body and.

As shown in fig. 1, the substrate is rectangular, the two insulating sheets are respectively located at two sides of the explosion-proof hole, the two pressing plates are respectively located at two sides of the explosion-proof hole, and the pressing plates are located on the insulating sheets; the positive pole guide piece, the negative pole guide piece, the stopping frame body, the substrate, the two insulating sheets and the two pressing plates are all provided with connecting holes, the connecting holes are rivet holes, the positive pole connecting piece sequentially penetrates through the positive pole guide piece, the stopping frame body, the substrate, one of the insulating sheets and the rivet hole formed in one of the pressing plates, the top end of the positive pole connecting piece is fixedly connected with the pressing plates, and therefore the positive pole guide piece, one of the insulating sheets and one of the pressing plates are fixedly connected to one end of the substrate through the positive pole connecting piece; the negative pole connecting piece passes negative pole leader, stop frame body, base plate, another insulating piece and another clamp plate in proper order, the top of negative pole connecting piece with the clamp plate rigid coupling is in through negative pole connecting piece with negative pole leader, another insulating piece, another clamp plate rigid coupling from this the other end of base plate.

From this, through the design of above-mentioned structure, through the erection function of anodal connecting piece and negative pole connecting piece, can form the lithium ion apron in the utility model discloses in.

In order to make the purpose, technical solution and advantages of the present invention more concise and clear, the present invention is described with the above embodiments, which are only used for describing the present invention, and can not be understood as a limitation to the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A lithium ion cover plate comprises a substrate (1), a stopping frame (2), a positive pole leader (3), a negative pole leader (4), a positive pole connecting piece (5), a negative pole connecting piece (6), two insulating pieces (7) and two pressing plates (8), and is characterized in that an explosion-proof hole (11) is arranged in the middle of the substrate, a pad pasting (9) and an explosion-proof film (10) are arranged in the explosion-proof hole, the stopping frame is fixedly connected to the side surface of the substrate where the explosion-proof film is arranged, the stopping frame comprises a stopping frame body (21) fixedly connected with the substrate and a stopping bulge (22) integrally formed with the stopping frame body and used for fixing a battery roll core below the explosion-proof film, the stopping bulge comprises a plurality of grids (22-1) arranged at intervals in the length direction of the stopping frame body and side bulges (22-2) connected to the two ends of the grids and fixedly connected to the side surface of the stopping frame body, the battery winding core is characterized in that the grids and the side end protrusions are in arc surfaces with one surfaces, which are contacted with the battery winding core, of the battery winding core, and the positive pole leading piece and the negative pole leading piece are connected to the stopping frame body and are respectively located on two sides of the stopping protrusions.

2. The lithium ion cover plate of claim 1, wherein the stopper frame is made of polypropylene and has a waist shape.

3. The lithium ion cover plate according to claim 1, wherein the positive tab, the negative tab, the stopper frame body, the base plate, the two insulating sheets, and the two pressing plates are all provided with connecting holes, the positive connector sequentially passes through the positive tab, the stopper frame body, the base plate, one of the insulating sheets, and one of the pressing plates, and the top end of the positive connector is fixedly connected with the pressing plate; the negative electrode connecting piece penetrates through the negative electrode guide piece, the stopping frame body, the base plate, the other insulating piece and the other pressing plate, and the top end of the negative electrode connecting piece is fixedly connected with the pressing plate.

4. The lithium ion cover plate of claim 1 or 3, wherein the positive connector is a positive rivet and the negative connector is a negative rivet.

5. The li-ion cover plate of claim 1, wherein the two insulating sheets and the two pressing plates are respectively located at two sides of the explosion-proof hole, and the two insulating sheets and the two pressing plates are in a kidney-shaped hole structure.