A lithium-ion soft pack battery module for electric vehicles

Abstract

A lithium-ion soft-pack battery module for an electric vehicle. Two groups of multiple cell fixing seat installation grooves are correspondingly opened on the battery cell cover plate, and the electrodes of the soft-pack battery cells pass through the installation grooves of the battery cell fixing seat correspondingly one by one. According to the polarity, the poles are connected correspondingly. The battery cover is correspondingly provided with holes for positive and negative poles on the battery cover, and the poles are respectively pierced through the positive and negative holes of the battery cover; the battery case The body has a lower port, the lower port of the battery case is connected to the lower battery cover, the lower battery cover and the battery case are provided with a lower battery cover substrate, and the lower surface of the lower battery cover substrate is recessed inwardly to provide a heating wire fixing groove , the lower battery cover substrate in the area where the heating wire fixing groove is located is provided with a plurality of transparent heat transfer plate slots, the heat transfer plate slots communicate with the battery compartment body, and the heating wire fixing slot is fixedly connected with a heating wire. A heat transfer plate is inserted into the slot of the heat plate, and the heat transfer plate extends into the compartment body of the battery compartment, and both the heat transfer plate and the heating wire are located inside the lower battery cover.

Description

technical field [0001] The invention relates to a lithium ion soft pack battery module, in particular to a lithium ion soft pack battery module for an electric vehicle. Background technique [0002] As we all know, electric vehicles have become a means of transportation for people. Electric vehicles have the advantages of energy saving and environmental protection. However, the high and low temperature performance of lithium-ion batteries for electric vehicles is currently poor, which has become a technical problem restricting the use of lithium-ion batteries in electric vehicles. At present, the heating method used for electric vehicle batteries is to arrange heating films on the bottom or side. This heating method cannot achieve uniform heating of each single cell inside the battery, resulting in faster heating of the cells close to the heating source and a longer distance. The temperature rise of the battery is very slow, causing the temperature difference between the cel...

AI Technical Summary

Problems solved by technology

[0002] As we all know, electric vehicles have become a kind of means of transportation for people. Electric vehicles have the advantages of energy saving and environmental protection. However, the high and low temperature performance of lithium-ion batteries for electric vehicles is currently poor, which has become a technical problem that restricts the use of lithium-ion batteries in electric vehicles.

At present, the heating method used for electric vehicle batteries is to arrange heating films on the bottom or side. This heating method cannot achieve uniform heating of each single cell inside the battery, resulting in faster heating of the cells close to the heating source and a longer distance. The temperature rise of the battery is very slow, resulting in an increase in the temperature difference between the cells, and at the same time, the heat dissipation function cannot be taken into account

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