CN211350879U

CN211350879U - Nickel net capable of improving pseudo low pressure after clamp formation

Info

Publication number: CN211350879U
Application number: CN202020343638.6U
Authority: CN
Inventors: 胡李; 李国敏
Original assignee: Shenzhen Grand Powersource Co ltd
Current assignee: Shenzhen Grand Powersource Co ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-08-25
Anticipated expiration: 2030-03-18

Abstract

The utility model discloses an improve nickel net of artificial low pressure after anchor clamps change into mainly is to the PCB board surface that anchor clamps change into the cabinet and fills up one deck nickel net, nickel net earlier with PCB board surface contact, electric core utmost point ear again with nickel net surface contact to ensure holistic contact effect, promoted voltage acquisition's accuracy, promoted overcurrent's reliability greatly. On the one hand, the abrasion of the surface of the PCB of the battery cell is avoided, and on the other hand, the false low-voltage reject ratio of the battery cell in the clamp forming procedure is integrally reduced.

Description

Nickel net capable of improving pseudo low pressure after clamp formation

Technical Field

The utility model relates to a lithium ion battery technical field especially relates to an improve nickel net of pseudo low pressure after anchor clamps change into.

Background

Because the lithium ion battery has the advantages of light weight, large capacity, no memory effect and the like, and is generally applied, the flexible package lithium ion battery has the advantages of high energy density, light weight, various form changes, capability of being made into an ultra-thin battery and the like, and the flexible package lithium ion battery is basically adopted as an energy source for the current electronic mobile products.

At present, high-temperature clamping is adopted by most manufacturers because of short cycle and high efficiency, the contact interface of an inner pole piece of the cell and a diaphragm is good, the surface smoothness of the cell is good, but the surface of a PCB (printed Circuit Board) in a clamping and forming cabinet is abraded and oxidized along with the passage of time, so that the local contact performance is poor, the voltage sampling and overcurrent capacity of the cell in the charging process are not enough, and the pseudo low voltage is expressed when the cell is placed in the cabinet, namely the formation charging is not thorough, the rework treatment is needed, and the proportion is up to 5-20%.

In view of the above, it is necessary to provide a nickel mesh with improved pseudo-low pressure after forming the jig to solve the disadvantages of the prior art.

Disclosure of Invention

The utility model discloses the main is not enough to prior art, and provide an improve the nickel net of the artificial low pressure in anchor clamps ization back, mainly become the PCB board surface of cabinet to anchor clamps ization and fill up one deck slice nickel net, nickel net earlier with PCB board surface contact, electric core utmost point ear again with nickel net surface contact, thereby ensure holistic contact effect, the accuracy of voltage acquisition has been promoted, the reliability of overcurrent has been promoted greatly, the wearing and tearing on PCB board surface have been avoided, nickel net has certain elasticity, all the time with PCB board and electric core just, negative pole utmost point ear keeps good contact.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a nickel screen for improving the pseudo low pressure after the clamp is formed is characterized in that the nickel screen is placed on the surface of a PCB (printed circuit board), a battery core lug is placed on the surface of the nickel screen, and the nickel screen is respectively arranged on the surfaces of a positive PCB surface and a negative PCB surface. The nickel screen contacts with PCB surface contact earlier, and electric core utmost point ear contacts with nickel screen surface contact again to ensure holistic contact effect, promoted voltage acquisition's accuracy, promoted overcurrent's reliability greatly.

The thickness of the nickel screen is 0.3-0.8 mm, the width is 10-20 mm, the length is 10-60 mm, and the periphery is subjected to fillet treatment.

The nickel screen has certain elasticity and keeps good contact with the PCB and the positive and negative electrode lugs of the battery cell all the time.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model can avoid the abrasion of the battery cell tab to the surface of the PCB plate;

(2) the utility model discloses the false low pressure rate of electric core in the anchor clamps formation process can be improved;

(3) the nickel screen of the utility model has low manufacturing cost and can be replaced quickly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, do not constitute an undue limitation on the invention.

Fig. 1 is the assembly schematic diagram of the utility model for improving the false low pressure nickel screen formation after the clamp formation.

Fig. 2 is a plan view of the assembly of the utility model when the nickel screen formation of pseudo low pressure after the formation of the fixture is improved.

Fig. 3 is a perspective view of the nickel screen of the present invention.

Fig. 4 is a top view of the nickel screen of the present invention.

Fig. 5 is a side view of the nickel screen of the present invention.

Fig. 6 is a front view of the nickel screen of the present invention.

In the figure, 1-nickel screen, 11-nickel screen on positive PCB, 12-nickel screen on negative PCB, width of W-nickel screen, length of L-nickel screen, R is rounding angle of nickel screen and thickness of nickel screen, 21-positive PCB, 22-negative PCB, 3 is electric core, 31 is positive lug of electric core, 32 is negative lug of electric core.

Detailed Description

The invention will be described in detail with reference to the drawings and specific examples, which are provided to illustrate exemplary embodiments of the invention and not to limit the invention.

Example 1:

firstly, prefabricating

nickel nets

11 and 12, wherein the thickness of the nickel nets is 0.5mm, the width W is 10mm, the length L degree is 40mm, and the radius R is 2 mm; then, the nickel screen 11 is placed on the surface of the positive PCB 21, the nickel screen 12 is placed on the surface of the negative PCB 22, the cell positive tab 31 is placed on the surface of the positive nickel screen 11, and the cell negative tab 31 is placed on the surface of the negative nickel screen 12. Therefore, the abrasion of the surface of the PCB is avoided, and the nickel screen has certain elasticity and keeps good contact with the PCB and the positive electrode lug 31 and the negative electrode lug 32 of the battery cell all the time.

Example 2:

firstly, prefabricating

nickel nets

11 and 12, wherein the thickness of the nickel nets is 0.5mm, the width W is 10mm, the length L is 50mm, and the radius angle R is 2 mm; then, the nickel screen 11 is placed on the surface of the positive PCB 21, the nickel screen 12 is placed on the surface of the negative PCB 22, the cell positive tab 31 is placed on the surface of the positive nickel screen 11, and the cell negative tab 31 is placed on the surface of the negative nickel screen 12. Therefore, the abrasion of the surface of the PCB is avoided, and the nickel screen has certain elasticity and keeps good contact with the PCB and the positive electrode lug 31 and the negative electrode lug 32 of the battery cell all the time.

Example 3:

firstly, prefabricating

nickel nets

11 and 12, wherein the thickness of the nickel nets is 0.8mm, the width W is 20mm, the length L is 50mm, and the radius angle R is 3 mm; then, the nickel screen 11 is placed on the surface of the positive PCB 21, the nickel screen 12 is placed on the surface of the negative PCB 22, the cell positive tab 31 is placed on the surface of the positive nickel screen 11, and the cell negative tab 31 is placed on the surface of the negative nickel screen 12. Therefore, the abrasion of the surface of the PCB is avoided, and the nickel screen has certain elasticity and keeps good contact with the PCB and the positive electrode lug 31 and the negative electrode lug 32 of the battery cell all the time.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the specific examples are applied herein to explain the principles and embodiments of the present invention, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; the present invention can be modified in the specific embodiments and applications, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. The nickel screen is characterized in that the nickel screen is placed on the surface of a PCB (printed Circuit Board), a battery cell tab is placed on the surface of the nickel screen, and the nickel screen is respectively provided with a positive electrode PCB surface and a negative electrode PCB surface.

2. The nickel screen for improving pseudo low pressure after forming of the clamp according to claim 1, wherein the nickel screen has a thickness of 0.3-0.8 mm, a width of 10-20 mm, a length of 10-60 mm, and rounded corners.

3. The nickel screen for improving pseudo low pressure after forming of the clamp according to claim 1, wherein the nickel screen has certain elasticity and always keeps good contact with the positive and negative electrode tabs of the PCB and the battery cell.