Quick spline type connection structure of battery pack

Abstract

The invention belongs to the field of electric vehicle power battery packs and relates to a novel battery post and a connecting board which are particularly applied to a spline type connection structure for enabling batteries to quickly form a battery pack. The spline type connection structure comprises the batteries and the connecting board, and is characterized in that each battery is provided with grooves connected with an anode and a cathode inside each battery respectively, post piles are fixed on the connecting board, each post pile is in the shape of a cylinder with an arc-shaped protrusion on the outer surface, the internal structure of each groove is matched with each post pile, and a soft rubber board is arranged on one side of the connecting board. With the batteries in the same equivalent capacity, the height of the spline type connection structure is decreased, and arrangement is more effectively benefited; under the condition of equivalent current, required material area of each post pile is smaller; the spline type connection structure is quick in mounting so as to be more suitable for quick manufacture of the battery pack; the post piles need no stress, so that the internal structures of the batteries are not damaged, and the service life of the batteries is ensured; and the connecting board is high in reliability and convenient and safe to use, and the inside of the connecting board is not prone to forming of floating voltage.

Description

technical field [0001] The invention belongs to the field of power battery packs for electric vehicles, and relates to the invention of a new type of battery pole and connecting plate, which is especially used in the splined connection structure of batteries to quickly form battery packs. Background technique [0002] With the increasing R&D and production of electric vehicles, the requirements for battery packs are also more stringent, not only have higher requirements for battery performance parameters, but also put forward higher requirements for battery installation. [0003] At present, almost all power battery pack batteries used in electric vehicles are connected by bolts. The conductive plate is screwed into the threaded hole on the battery through various screws. After many tests, the connection between the positive and negative plates of the single battery requires It usually takes about 10 seconds to complete all the installation and connection work of a battery p...

AI Technical Summary

Problems solved by technology

[0003] At present, almost all power battery pack batteries used in electric vehicles are connected by bolts. The conductive plate is screwed into the threaded hole on the battery through various screws. After many tests, the connection between the positive and negative plates of the single battery requires It usually takes about 10 seconds to complete all the installation and connection work of a battery pack, and the general time is more than 15 minutes, and accidents are prone to occur during the operation, resulting in injury to the battery and personnel, and the tightening torque of each battery locking screw is different due to the operator. Leading to poor contact, long-term high-current operation, overheating, burning, or over-tightening damages the internal structure of the battery, resulting in greatly reduced safety performance and shortened battery life.

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