CN211858794U

CN211858794U - Quick-connection lithium battery cover plate

Info

Publication number: CN211858794U
Application number: CN202020820744.9U
Authority: CN
Inventors: 王文林
Original assignee: Suzhou Juhong Communication Computer Technology Co ltd
Current assignee: Suzhou Juhong Communication Computer Technology Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-11-03
Anticipated expiration: 2030-05-18

Abstract

A quick-connection type lithium battery cover plate comprises a cover plate main body, wherein a lower insulating pad is connected to the lower portion of the cover plate main body, a positive pressing plate and a negative pressing plate are respectively fixedly connected to the upper portion of the cover plate main body in an insulating mode, a positive lead piece and a negative lead piece located below the lower insulating pad are respectively connected with the positive pressing plate and the negative pressing plate through respective rivets, through holes are formed in the positive pressing plate and the negative pressing plate, positive studs and negative studs with non-round bases are respectively exposed out of corresponding through holes and are fixed with the positive pressing plate and the negative pressing plate in a rotation stopping matching mode, and the exposed positive. The utility model discloses a rational in infrastructure, just, the negative pole double-screw bolt can be when many battery series-parallel connection more convenient rapid connecting wire, and it is also easier to detect and change part lithium cell wherein. And the split type arrangement of the positive and negative pressure plates and the positive and negative studs simplifies the processing, reduces the cost, is convenient to assemble, can flexibly adopt metal materials of different materials to manufacture each part according to the performance parameter requirements, and improves the service performance more optimally.

Description

Quick-connection lithium battery cover plate

The technical field is as follows: the utility model relates to a lithium battery fitting, especially the apron of lithium cell.

Background art: in many applications, a plurality of lithium batteries are connected in series and in parallel to form a battery pack. The positive and negative pressure plates on the common lithium battery cover plate are both plane type, the end part of the connecting lead between the batteries adopts a welding mode, and the maintenance and the replacement of partial batteries in the battery pack are inconvenient. The lithium battery cover plate integrally provided with the connecting stud on the positive electrode pressing plate and the negative electrode pressing plate is also provided, the battery and a lead are connected without welding, and the disassembly and assembly operation is facilitated. However, the positive and negative pressure plates integrally provided with the connecting studs are troublesome to process, unstable in quality and high in cost, and are particularly inconvenient to apply to the full-lug lithium battery cover plate needing to be connected with the electrode lead. In addition, the connecting studs and the positive and negative electrode pressing plates have inconsistent requirements on electric conductivity, mechanical strength and the like, and the integrated structure can only be made of the same metal material, so that the use performance is not ideal enough.

The invention content is as follows: the utility model provides a to prior art not enough, the utility model provides a rational in infrastructure, convenient assembling's quick hookup formula lithium cell apron.

The utility model discloses a below is connected with the apron main part that insulating pad down, positive pole clamp plate and negative pole clamp plate are insulating fixed connection respectively and are lapping the higher authority of main part, the positive pole that lies in insulating pad below down draws piece and negative pole to draw the piece and draw the piece through respective rivet connection positive pole clamp plate and negative pole clamp plate respectively, all be equipped with the through-hole on positive pole clamp plate and the negative pole clamp plate, the positive pole double-screw bolt that has non-round base exposes corresponding through-hole and only changes the cooperation with the positive pole clamp plate and fix, the negative pole double-screw bolt that has non-round base exposes corresponding through-hole and only changes the cooperation with the negative pole clamp plate and fix, it is positive to expose, the.

The utility model discloses a rational in infrastructure, just, the negative pole double-screw bolt can be when many battery series-parallel connection more convenient rapid connecting wire, and it is also easier to detect the partial lithium cell of changing wherein, improves easy maintainability. In addition, the split arrangement of the positive and negative pressure plates and the positive and negative studs simplifies the processing, reduces the cost and is convenient to assemble. Split type setting can also be according to the performance parameter requirement, and the metal material of nimble different materials of adopting makes each part, and performance optimizes the improvement more.

The invention is further described with reference to the following figures and examples.

Description of the drawings: fig. 1 is a schematic perspective view of the embodiment.

Fig. 2 is a schematic sectional a-a perspective view of fig. 1.

Fig. 3 is a perspective exploded view of the embodiment.

The specific implementation mode is as follows: as shown in fig. 1 to 3, the lithium battery cover plate of the present embodiment is of an all-pole ear type, a lower insulating pad 4 is connected below the cover plate main body 1, the positive electrode pressing plate 2 and the negative electrode pressing plate 3 are respectively and fixedly connected on the cover plate main body 1 in an insulating manner, and the positive electrode tab 5 and the negative electrode tab 6 located below the lower insulating pad 4 are respectively connected to the positive electrode pressing plate 2 and the negative electrode pressing plate 3 through respective rivets 7. The positive pressure plate 2 and the negative pressure plate 3 are both provided with through holes 8, positive studs 10 with non-round bases 9 are exposed out of the corresponding through holes 8 and are fixedly matched with the positive pressure plate 2 in a rotation stopping manner, negative studs 11 with non-round bases 9 are exposed out of the corresponding through holes 8 and are fixedly matched with the negative pressure plate 3 in a rotation stopping manner, and the exposed positive studs and negative studs form a structure for quick interconnection between batteries.

The lower part of the rivet 7 can be generally sleeved with a sealing ring 16, so that the sealing performance is more reliable when the positive pole lead piece 5 and the negative pole lead piece 6 are riveted to the positive pole pressing plate 2 and the negative pole pressing plate 3 respectively. The positive electrode pressing plate 2 in this embodiment is located in a non-circular box-shaped positive electrode insulating pad 12, the negative electrode pressing plate 3 is located in a non-circular box-shaped negative electrode insulating pad 13, two grooves 14 with corresponding shapes are formed in the cover plate main body 1, and the bottoms of the positive electrode insulating pad 12 and the negative electrode insulating pad 13 are respectively arranged in the corresponding grooves 14 to be matched and fixed. With this configuration, the positive stud 10 and the negative stud 11 can be connected to each other with a higher rotation stopping performance.

In practice, the cover plate main body 1 of the lithium battery is generally made of aluminum, and the positive electrode pressing plate 2, the negative electrode pressing plate 3, the positive electrode stud 10 and the negative electrode stud 11 can be made of different metal materials according to performance requirements, and generally made of metals such as aluminum, red copper, brass, stainless steel and the like.

An explosion-proof pressure relief device 15 is generally arranged in the middle of the cover plate main body 1, and when the internal pressure of the lithium battery reaches a threshold value, the explosion-proof pressure relief device 15 is exploded to relieve pressure so as to ensure safety.

Claims

1. The utility model provides a quick hookup formula lithium cell apron, is connected with the apron main part of insulating pad down including the below, and positive clamp plate and negative pole clamp plate are insulating fixed connection respectively on the apron main part, and the positive pole that is located insulating pad below down draws piece and negative pole to draw the piece and respectively through respective rivet connection positive clamp plate and negative pole clamp plate, characterized in that: the positive pressure plate (2) and the negative pressure plate (3) are both provided with through holes (8), positive studs (10) with non-round-bottom seats (9) are exposed out of the corresponding through holes (8) and are fixed with the positive pressure plate (2) in a rotation stopping matching mode, negative studs (11) with non-round-bottom seats (9) are exposed out of the corresponding through holes (8) and are fixed with the negative pressure plate (3) in a rotation stopping matching mode, and the exposed positive studs and negative studs form a structure for rapid interconnection between batteries.

2. The quick coupling type lithium battery cap plate as claimed in claim 1, wherein: the positive electrode pressing plate (2) is positioned in a non-circular box-shaped positive electrode insulating pad (12), the negative electrode pressing plate (3) is positioned in a non-circular box-shaped negative electrode insulating pad (13), two grooves (14) with corresponding shapes are formed in the cover plate main body (1), and the bottoms of the positive electrode insulating pad (12) and the negative electrode insulating pad (13) are respectively arranged in the corresponding grooves (14) to be matched and fixed.

3. The quick coupling type lithium battery cap plate according to claim 1 or 2, wherein: the positive pressure plate (2) and the positive stud (10) are made of different metal materials, and the negative pressure plate (3) and the negative stud (11) are also made of different metal materials.

4. The quick coupling type lithium battery cap plate according to claim 1 or 2, wherein: an explosion-proof pressure relief device (15) is arranged in the middle of the cover plate main body (1).

5. The quick coupling type lithium battery cap plate as claimed in claim 3, wherein: an explosion-proof pressure relief device (15) is arranged in the middle of the cover plate main body (1).