Battery cover plate with new type structure and secondary battery thereof

Abstract

The invention relates to a battery cover plate with novel structure and a secondary battery thereof. The battery cover plate comprises a plate body with via-holes, positive / negative electrode connectors, positive / negative conductive sheets, an anti-explosion device and insulating gaskets arranged on the via-holes, wherein the positive / negative electrode connectors are respectively fixed on the plate body through respective insulating gaskets; the positive / negative conductive sheets are respectively connected with each electrode connector and fixed below the insulating gaskets; the electrode connector comprises two or more fasteners, an electrode press plate with fixing holes identical to the fasteners in number, and screw-thread connectors arranged on the electrode press plate for conductive connection; the via-holes on the plate body correspond to the fixing holes on the electrode press plate; and the fasteners penetrate through the via-holes and the fixing holes to fix the electrode press plate on the plate body. The battery cover plate and the positive / negative electrode connectors on the secondary battery of the invention have more stable sealing performance, more flexible external connection, maintenance and disassembly and more convenient usage.

Description

technical field [0001] The present invention relates to a chemical power source, and more specifically, the present invention relates to a secondary battery and battery components thereof. Background technique [0002] With the rapid development of digital products such as digital cameras, video cameras, notebook computers, and mobile DVDs, secondary batteries with high specific capacity, high energy density, and multiple charge and discharge capabilities have been widely used. At the same time, due to the development of electric vehicles, electric bicycles, and hybrid electric vehicle industries, secondary power batteries are attracting more and more attention. In more occasions, the power battery must be used by multiple batteries in series and parallel to increase the output voltage and capacity. Therefore, with the continuous improvement of secondary battery technology, higher requirements are put forward for the series and parallel combination of batteries. . [0003]...

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that the sealing part and the connecting force part are integrated, so that when the upper nut is screwed to connect with the external conductor, the lower sealing nut is often loosened and leaks, and the lower nut of this structure occupies too much space inside the battery. Large, reducing the volume specific capacity of the battery

While the traditional structure 2 (as attached Figure 4-6 ) of the battery cover plate, the positive and negative electrode connectors are electrode pressure plates with at least two fixing holes. The advantage of this structure is that the sealing parts and the electrode connection stress parts are separated from each other, and the battery is stored or in motion. Under the circumstances, the electrode connectors are not easy to loose and leak, and the volume specific capacity of the battery can be increased, but the disadvantage of this structure is that the battery must be connected to the external conductor by wire welding, which makes it difficult to maintain, disassemble and externally connect.

The external connection and disassembly process is very destructive to the battery, and for the battery pack, due to the difficulty of connection and disassembly, often one of the batteries has a problem and the entire battery pack is scrapped

[0006] All in all, the traditional structure of the battery cover and its positive and negative electrode connectors has disadvantages such as unstable sealing, inconvenient external connection, and inconvenient use, and it is difficult to adapt to the growing needs of industrial or civil fields.

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