Dynamic design and separated type charge method of electric car child and mother battery pack

Abstract

The invention provides a dynamic design and separated type charge method of an electric car child and mother battery pack to solve the problem that charging and battery replacing of electric cars are not convenient. A mother battery pack of normal capacity specification and a child battery pack with small capacity and small kinetic energy are arranged on an electric car, and under normal running conditions, the mother battery pack is used for normally driving the electric car to run to meet the requirements for normal speed and duration performance; under the condition that energy of the mother battery pack runs out almost and charging is needed, the mother battery pack is detached at a charge station, the electric car enables the child battery pack to work, and the child battery pack drives a car motor to run at low speed to drive away from the charge station to find a proper public or self-use docking station. After the mother battery pack is fully charged, the child battery pack is started to work to enable the car to return to the charge station, and the mother battery pack is gotten back and switched to work. The child battery pack with low kinetic energy and low electricity works to achieve normal run, charge management and parking at a parking lot of the electric car.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and relates to a power design and a separate charging method for a secondary battery pack of an electric vehicle. Background technique [0002] An electric vehicle refers to a vehicle powered by a vehicle-mounted power supply, driven by a motor to drive the wheels, and conforming to the requirements of road traffic and safety regulations. Electric vehicles have the advantages of economical operation, clean and environmental protection, etc., and are vigorously promoted by governments of various countries. At present, the battery charging and replacement and management system is an important and difficult problem. [0003] At present, pure electric vehicles generally use a single battery pack as the power source. Once the energy is exhausted, they can only stop driving. Therefore, before the power consumption is completed, it is necessary to find a public charging pile, or return to the user char...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the inconvenience of current pure electric vehicle charging and battery replacement, the present invention proposes the design of the power and separate charging method of the battery pack of the electric vehicle

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