Braking energy recovery system and method of new energy vehicle and new energy vehicle

Abstract

The invention provides a braking energy recovery system and method of a new energy vehicle and the new energy vehicle. The braking energy recovery system of the new energy vehicle comprises a wheel braking system, a mechanical energy recovery system and a thermoelectric conversion device. The wheel braking system is used for converting kinetic energy of the vehicle into mechanical energy and first heat energy in the wheel braking process. The mechanical energy recovery system is used for determining battery absorbable electric energy on the basis of the battery charging state, and determining convertible electric energy on the basis of the mechanical energy and the energy conversion efficiency, converting the mechanical energy into charging electric energy with the energy value equal to that of the convertible electric energy when the value of the battery absorbable electric energy is larger than or equal to that of the convertible electric energy, and converting the mechanical energy into charging electric energy with the energy value equal to that of the battery absorbable electric energy, and second heat energy when the value of the battery absorbable electric energy is smaller than that of the convertible electric energy. The thermoelectric conversion device is used for converting the first heat energy into auxiliary charging electric energy when the value of the battery absorbable electric energy is larger than that of the convertible electric energy. By the adoption of the braking energy recovery system and method of the new energy vehicle and the new energy vehicle, the braking energy can be utilized to supplement the electric energy of a battery, and the braking energy recovery rate is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, more specifically, to a braking energy recovery system and recovery method for new energy vehicles and new energy vehicles. Background technique [0002] Energy shortages, oil crises and environmental pollution are intensifying, which have a huge impact on people's lives and are directly related to the sustainable development of the country's economy and society. All countries in the world are actively developing new energy technologies. New energy technology is considered to be an important way to solve the energy crisis and environmental degradation. New energy vehicles can reduce oil consumption, low pollution, and low noise, and are considered to be an important way to solve energy crisis and environmental degradation. Under the premise of meeting the vehicle power requirements and mileage requirements, new energy vehicles can effectively improve fuel economy and reduce emissions, and a...

AI Technical Summary

Problems solved by technology

However, in this implementation, power management and flywheel management are added, the management system becomes complex, and the control strategy becomes complex

[0005] In addition, the existing technology does not take into account the utilization of the energy lost in the form of heat, nor does it consider whether the electric energy recovered and converted by the motor can be completely absorbed by the battery, so the braking energy recovery rate is not high

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