Connection method for power battery with male thread type terminal post

Abstract

The invention is a connection method for power batteries with male thread type terminal posts. According to the invention, terminal posts and connection sheets are tightly connected by a specially designed screw-sleeve connection method of combining sleeves and screws so as to achieve a series-parallel effect, and glue is applied where the connection sheets and the terminal posts contact to prevent the two from loosening. The greatest characteristic of the invention is that conventional the plane contact between terminal posts and connection parts is changed, and more reliable thread contact flank with larger contact area is employed; therefore, effective contact area is enlarged and potential safety hazard resulting from uneven planes is eliminated.

Description

technical field [0001] The invention relates to a storage battery assembly technology, in particular to an externally threaded pole connection method for a power storage battery. Background technique [0002] Commonly used power batteries with externally threaded poles are connected in series-parallel connection by directly tightening the connection pieces with nuts. This method is easy to operate, and only needs to use a simple tool (wrench) to complete the entire connection process. At present, the pole connection of the power battery with external threaded pole mainly adopts this method. However, this method has the following problems in the application: [0003] 1. The contact area between the connecting piece and the pole is small, which makes the contact internal resistance larger. In this connection method, the contact area between the connecting piece and the pole depends on the minimum contact area between the nut and the connecting piece and between the connecti...

AI Technical Summary

Problems solved by technology

On the one hand, the effective contact area of ​​the nut is small; on the other hand, the generally used externally threaded pole is thicker, and its platform part is also smaller, so the overall effective contact area is small and the internal resistance of the connection is large

[0004] 2. When there is slight unevenness or misalignment in any of the three areas of the nut, connecting piece, and pole platform, the effective contact may change from overall surface contact to partial surface contact or even point contact. When the contact internal resistance is much larger than the normal contact internal resistance, it will lead to overheating of the pole in severe cases, thus causing safety hazards

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