CN211654874U

CN211654874U - Single-stage battery cover plate assembly

Info

Publication number: CN211654874U
Application number: CN202020610096.4U
Authority: CN
Inventors: 李中亮
Original assignee: Suzhou Meiyu New Energy Co ltd
Current assignee: Suzhou Meiyu New Energy Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-10-09
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a single-stage battery cover plate subassembly. The technical scheme of the utility model is that: including single positive pole battery apron and single negative pole battery apron, single positive pole battery apron includes first top cap piece, the positive pole welded plate of setting in first top cap piece, first PP inner support, the anodal collecting electrode of being connected with positive pole welded plate and the first sealing washer of setting between first top cap piece and positive pole welded plate, single negative pole battery apron includes the second top cap piece, the negative pole welded plate of setting in the second top cap piece, second PP inner support, the negative pole collecting electrode of being connected with negative pole welded plate and the second sealing washer of setting between second top cap piece and negative pole welded plate, be provided with the first PPS injection molding that can be connected with first sealing washer around positive pole welded plate on the first top cap piece, be provided with the second PPS injection molding that can be connected with the second sealing washer around negative pole welded plate on the second top cap piece. The utility model provides a scheme structural strength high leakproofness is good and with low costs.

Description

Single-stage battery cover plate assembly

Technical Field

The utility model relates to a battery apron technical field, in particular to single-stage battery cover plate subassembly.

Background

With the energy crisis and climate warming in the world, a brand new energy mode is urgently needed in the field of transportation, and the lithium ion battery has attracted wide attention in the field of transportation due to the characteristics of environmental protection, high energy output and the like. And the overall performance of the electric automobile is directly influenced by the quality of the performance of the vehicle-mounted high-capacity power battery. This puts higher demands on the vehicle-mounted power battery of the electric vehicle, such as higher safety, more excellent performance and lighter weight.

At present, reliability, the security of battery also are a technical difficulty and the key in large capacity power battery manufacture process, especially the high leakproofness of battery in the manufacture process, and present large capacity battery is stricter to the battery gas tightness, if the battery capacity is high, the pressure is higher relatively in the battery for the easy weeping or the gas leakage of spare part of the assembly of battery can cause very big potential safety hazard and formation electrolyte to volatilize, lead to the problem such as battery performance life decay for the battery. In addition, in the use process of the lithium battery, if the sealing performance of the battery pole and the sealing ring is poor, moisture in the air sucked into the battery is mixed with electrolyte in the battery, or the electrolyte in the battery is volatilized and dried to form crystals, so that the performance and the cycle life of the battery are reduced, the internal resistance is increased, the performance of various parameters of the lithium battery is influenced, the battery cannot be continuously used, and the safety of the battery is seriously caused. Particularly, the positive electrode cover plate and the negative electrode cover plate of the long-strip battery in the prior art are independently arranged, the using amount is large, and the problem to be solved by the inventor is how to ensure the good structural strength and the good sealing performance and reduce the cost.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model discloses a main aim at provides a structural strength is good and with low costs single-stage battery cover plate subassembly.

In order to achieve the above purpose, the utility model provides a following technical scheme: a single-stage battery cover plate assembly comprises a single anode battery cover plate and a single cathode battery cover plate, wherein the single anode battery cover plate comprises a first top cover plate, an anode welding plate arranged in the first top cover plate, a first PP inner bracket, an anode collector connected with the anode welding plate and a first sealing ring arranged between the first top cover plate and the anode welding plate, the single-cathode battery cover plate comprises a second top cover plate, a cathode welding plate arranged in the second top cover plate, a second PP inner support, a cathode collector connected with the cathode welding plate and a second sealing ring arranged between the second top cover plate and the cathode welding plate, a first PPS injection molding piece which can be connected with the first sealing ring is arranged on the first top cover plate around the positive welding plate, and a second PPS injection molding part which can be connected with a second sealing ring is arranged on the second top cover plate around the negative welding plate.

Preferably, the second top cover plate is provided with an explosion-proof plate sticking film and an explosion-proof plate.

Preferably, the bottoms of the first and second PP inner frames are respectively fastened and connected with a frame side plate capable of supporting the positive collector and the negative collector.

The utility model has the following advantage for prior art, single anodal battery apron includes first top cap piece, sets up anodal welded plate in first top cap piece, a PP inner support, the anodal collecting electrode of being connected with anodal welded plate and sets up the first sealing washer between first top cap piece and anodal welded plate, has guaranteed the leakproofness. The single-cathode battery cover plate comprises a second top cover plate, a cathode welding plate arranged in the second top cover plate, a second PP inner support, a cathode collector connected with the cathode welding plate and a second sealing ring arranged between the second top cover plate and the cathode welding plate, and the sealing performance is guaranteed. The first PPS injection molding that can be connected with first sealing washer is provided with around anodal welded plate on the first top cap piece, first PPS injection molding can be with first lamina tecti, anodal welded plate, first sealing washer injection moulding encapsulation together, structural strength has been guaranteed, the second PPS injection molding that can be connected with the second sealing washer is provided with around negative pole welded plate on the second top cap piece, the second PPS injection molding can be with the second lamina tecti, negative pole welded plate, second sealing washer injection moulding encapsulation together, structural strength has been guaranteed.

Drawings

Fig. 1 is a top view of a single positive electrode battery cover plate of a single-stage battery cover plate assembly according to the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a structural diagram of a single negative electrode battery cover plate of the single-stage battery cover plate assembly of the present invention;

fig. 4 is a cross-sectional view of fig. 3.

In the figure: 1. a first top cover sheet; 2. a positive electrode welding plate; 3. a first PP inner support; 4. a positive collector electrode; 5. a first seal ring; 6. a second top cover sheet; 7. a negative electrode welding plate; 8. a second PP inner support; 9. a negative collector electrode; 10. a second seal ring; 11. a first PPS injection molded part; 12. a second PPS injection molded part; 13. sticking a film on the explosion-proof sheet; 14. an explosion-proof sheet; 15. and a bracket side plate.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figure 1, a single-stage battery cover plate assembly comprises a single-anode battery cover plate and a single-cathode battery cover plate, wherein the single-anode battery cover plate comprises a first top cover plate 1, an anode welding plate 2 arranged in the first top cover plate 1, a first PP inner support 3, an anode collector 4 connected with the anode welding plate 2 and a first sealing ring 5 arranged between the first top cover plate 1 and the anode welding plate 2, the single-cathode battery cover plate comprises a second top cover plate 6, a cathode welding plate 7 arranged in the second top cover plate 6, a second PP inner support 8, a cathode collector 9 connected with the cathode welding plate 7 and a second sealing ring 10 arranged between the second top cover plate 6 and the cathode welding plate 7, a first PPS (polyphenylene sulfide) injection molding piece 11 capable of being connected with the first sealing ring 5 is arranged on the first top cover plate 1 around the anode welding plate 2, and a second PPS (polyphenylene sulfide) injection molding piece 10 capable of being connected with the second sealing ring 10 is arranged on the second top cover plate 6 around the cathode welding plate 7 And a member 12.

Preferably, the second top cover sheet 6 is provided with an explosion-proof sheet film 13 and an explosion-proof sheet 14. The explosion-proof piece pad 13 and the explosion-proof piece 14 form an explosion-proof passage, and the risk factor is reduced.

Preferably, the bottom of the first PP inner support 3 and the bottom of the second PP inner support 8 are respectively fastened and connected with support side plates 15 capable of supporting the positive collector 4 and the negative collector 9.

The single-stage battery cover plate component comprises a single anode battery cover plate and a single cathode battery cover plate, is suitable for a blade battery or a long-strip battery, adopts the structural design of a ceramic pole column with a single-side pole lug in the prior art, and is poor in structural strength and high in cost. The single positive pole battery apron of this scheme includes first top cap piece 1, sets up anodal welded plate 2 in first top cap piece 1, a PP inner support 3, the anodal collecting electrode 4 of being connected with anodal welded plate 2 and sets up first sealing washer 5 between first top cap piece 1 and anodal welded plate 2, has guaranteed the leakproofness. The single-cathode battery cover plate comprises a second top cover plate 6, a cathode welding plate 7 arranged in the second top cover plate 6, a second PP inner support 8, a cathode collector 9 connected with the cathode welding plate 7 and a second sealing ring 10 arranged between the second top cover plate 6 and the cathode welding plate 7, and the sealing performance is guaranteed. First PPS injection molding 11 that can be connected with first sealing washer 5 is provided with around anodal welded plate 2 on the first top cap piece 1, first PPS injection molding 11 can be with first top cap board, anodal

welded plate

2, 5 injection moulding encapsulation of first sealing washer are in the same place, structural strength has been guaranteed, be provided with second PPS injection molding 12 that can be connected with second sealing washer 10 around negative pole welded plate 7 on the second top cap piece 6, second PPS injection molding 12 can be with the second top cap board, negative pole

welded plate

7, 10 injection moulding encapsulation of second sealing washer are in the same place, structural strength has been guaranteed.

The positive electrode welding plate 2 is connected with the positive electrode collector 4 through laser welding, and the negative electrode welding plate 7 is connected with the negative electrode collector 9 through laser welding to form a conductive path. And support curb plate 15 passes through the buckle lock joint with first PP inner support 3 and second PP inner support 8, can form the insulating isolation protection to voltage.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A single-stage battery cover plate assembly, which is characterized in that: including single positive pole battery apron and single negative pole battery apron, single positive pole battery apron includes first top cap piece, sets up anodal welded plate, first PP inner support in first top cap piece, the anodal collecting electrode of being connected with anodal welded plate and sets up the first sealing washer between first top cap piece and anodal welded plate, single negative pole battery apron includes second top cap piece, sets up negative pole welded plate, second PP inner support in the second top cap piece, the negative pole collecting electrode of being connected with negative pole welded plate and set up the second sealing washer between second top cap piece and negative pole welded plate, be provided with the first PPS injection molding that can be connected with first sealing washer around anodal welded plate on the first top cap piece, be provided with the second PPS injection molding that can be connected with the second sealing washer around negative pole welded plate on the second top cap piece.

2. The single stage battery cover plate assembly of claim 1, wherein: and the second top cover plate is provided with an explosion-proof plate sticking film and an explosion-proof plate.

3. The single stage battery cover plate assembly of claim 1, wherein: the bottoms of the first PP inner support and the second PP inner support are respectively connected with support side plates capable of supporting the positive collector and the negative collector in a buckling mode.