Electric vehicle battery connection structure

Abstract

The invention discloses an electric vehicle battery connection structure, which belongs to the field of electric vehicles; the technical problem to be solved is to provide a battery connection that does not change the battery capacity, increases the voltage, continues to supply power, and increases the battery life by switching between series and parallel. structure; the technical solution adopted to solve this technical problem is: electric vehicle battery connection structure, including the first battery, the second battery, the third battery, and the fourth battery, and multiple switches are used to realize the switching between series and parallel. , to realize the stable output of electric power, and improve the endurance of the vehicle; the invention can be widely used in the field of electric vehicles.

Description

technical field [0001] The invention discloses an electric vehicle battery connection structure, belonging to the technical field of electric vehicles. Background technique [0002] Electric vehicles are an environmentally friendly and green means of transportation, but the battery life of electric vehicles restricts the development of electric vehicles. Existing electric vehicles can only perform work cycles through charging, power supply, and power-off protection at low voltage. Effectively increase mileage. [0003] The battery connection in existing electric vehicles mostly uses multi-circuit parallel connection to increase the cruising range of electric vehicles. However, after the battery pack is used in parallel for a period of time, the internal resistance of the battery cells changes, and the battery cells themselves also have Therefore, as the internal resistance of the battery cell increases with the use of time, the internal resistance will vary greatly, and the...

AI Technical Summary

Problems solved by technology

[0002] Electric vehicles are an environmentally friendly and green means of transportation, but the battery life of electric vehicles restricts the development of electric vehicles. Existing electric vehicles can only perform work cycles through charging, power supply, and power-off protection at low voltage. Effectively increase mileage

[0003] The battery connection in existing electric vehicles mostly uses multi-circuit parallel connection to increase the cruising range of electric vehicles. However, after the battery pack is used in parallel for a period of time, the internal resistance of the battery cells changes, and the battery cells themselves also have Therefore, as the internal resistance of the battery cell increases with the use of time, the internal resistance will have a large difference, and the electromotive force will then vary, causing the battery to heat up, accelerating the aging of the battery, and thus affecting the battery life of the electric vehicle.

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