Method for connecting external thread type posts of power battery

Abstract

The invention discloses a method for connecting external thread type posts of a power battery. The method comprises the following steps of: firstly, penetrating a conducting wire through two fastening sleeves, wherein two ends of the conducting wire are connected with two taper joints respectively; secondly, placing the taper joints into taper holes corresponding to the posts, and rotating the fastening sleeves to ensure that the taper joints closely contact the posts; and finally, performing dispensing looseness-prevention treatment on threaded parts where the fastening sleeves are connected with the posts or on upper surface holes of the fastening sleeves to fulfill the aim of preventing looseness. The method is simple in process and is convenient to operate, and by adoption of the method, complex equipment is not needed, the connection internal resistance between battery packs can be greatly reduced, and the hidden trouble of poor contact can be eliminated, so that the method is an ideal assembling mode for batteries provided with the external thread type posts. The method for connecting the posts is suitable for connecting the batteries provided with the external thread type posts.

Description

[0001] technical field [0002] 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 [0003] 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: [0004] 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...

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

[0005] 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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