Hydrogen fuel cell automobile brake energy recovery system and brake energy recovery method thereof

A braking energy recovery and fuel cell technology, applied in electric braking systems, electric vehicles, battery/battery traction, etc., can solve problems such as low energy recovery efficiency and impact on vehicle braking performance, and prevent damage , the effect of increasing the braking force

Inactive Publication Date: 2019-05-24
HANTENG AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are many technical solutions for the recovery of vehicle braking energy, but there is no relatively mature and perfect technical solution

Method used

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  • Hydrogen fuel cell automobile brake energy recovery system and brake energy recovery method thereof

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Embodiment Construction

[0025] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0026] Such as figure 1 As shown, the present invention is a braking energy recovery system for hydrogen fuel cell vehicles. Safe and maximized recovery of braking energy, thereby improving vehicle mileage.

[0027] In order to solve the problems existing in the prior art and realize the purpose of the invention of maximizing the recovery of braking energy, the technical solution adopted by the present invention is:

[0028] Such as figure 1 As shown, the hydrogen fuel cell vehicle braking energy recovery system of the present invention is set in the VCU (vehicle controller), and obtains the vehicle speed signal by collecting the...

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Abstract

The invention discloses a hydrogen fuel cell automobile brake energy recovery system. Signals of accelerator pedals are acquired to serve as energy recovery trigger switch signals; the depth of a brake pedal is detected to serve as a brake torque judgment criterion; the SOC (state of charge) of a power cell and the working state of a fuel cell are detected to perform brake energy recovery. In addition, the invention further discloses a brake energy recovery method of the system. By the aid of the technical scheme, energy is maximally recovered by a reasonable and safe brake energy recovery strategy according to the working state of the hydrogen fuel cell during brake, and loss of excessive energy due to the brake pedal is avoided. Besides, when the hydrogen fuel cell works, the charging current of the power cell cannot exceed maximum chargeable current, damage to the power cell due to excessive brake feedback current is prevented, brake force is effectively increased, and a brake system is safer and more reliable.

Description

technical field [0001] The invention belongs to the technical field of power and braking systems of new energy vehicles. More specifically, the present invention relates to a hydrogen fuel cell vehicle braking energy recovery system. In addition, the present invention also relates to a braking energy recovery method of the braking energy recovery system. Background technique [0002] Faced with the dual pressure of energy saving and environmental protection, it began to develop new energy vehicles. As a new energy vehicle that uses clean energy, its range is far less than that of traditional vehicles, so this is a major constraint for new energy vehicles, so how to efficiently use the energy carried by vehicles is a very important issue. [0003] In the prior art, there are many technical solutions for the recovery of vehicle braking energy, but there is no relatively mature and perfect technical solution for hybrid electric vehicles with fuel cells and power batteries, an...

Claims

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Application Information

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IPC IPC(8): B60L7/10B60L50/70
CPCY02T90/40
Inventor 张佳谋汪伟卢贵兵方建伟陈绪强周小兵
Owner HANTENG AUTOMOBILE CO LTD
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