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Hydrogen fuel-cell vehicle braking energy recovery system

A braking energy recovery, fuel cell technology, applied in electric braking systems, battery/fuel cell control devices, electric vehicles, etc., can solve the problems of braking performance and driving experience, affecting the life and performance of auxiliary energy, etc. , to achieve the effect of recycling

Pending Publication Date: 2019-12-17
中极氢能汽车(长治)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the current state of the art, there are already many technical solutions for braking energy recovery; however, there are no more mature and suitable technical solutions for hydrogen fuel vehicles for hydrogen fuel cells and other auxiliary energy sources (power batteries and supercapacitors). , the imperfection of the energy recovery strategy will affect the service life and performance of the auxiliary energy, and affect the braking performance and driving experience

Method used

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Embodiment Construction

[0036] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] A hydrogen fuel cell vehicle braking energy recovery system, such as figure 1 As shown, including vehicle controller VCU, motor controller MCU, hydrogen fuel cell subsystem FCU, battery management subsystem BMS, super capacitor + bidirectional DC subsystem SCMS;

[0038] Data transmission between BMS, FCU, MCU, SCMS and VCU through CAN bus;

[0039] BMS is used to detect the remaining power SOC of the power battery and the rechargeable power of the power battery;

[0040] The FCU is used to control the output power of the fuel cell, and control the fuel cell to charge the power battery;

[0041] The MCU is used to obtain the motor speed and the maximum feedback torque of the motor, and control the torque of the...

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Abstract

The invention provides a hydrogen fuel-cell vehicle braking energy recovery system. The hydrogen fuel-cell vehicle braking energy recovery system comprises a vehicle control unit VCU, a motor controlunit MCU, a hydrogen fuel-cell sub system FCU, a battery management sub system BMS and a super-capacitor+bi-directional DC sub system SCMS; the VCU collects a motor rotation speed and speed reducer speed ratio information to obtain vehicle speed information, collects a throttle opening signal as an energy recovery triggering switch signal and collects an opening of a brake pedal as a judging basisof recovery power; and then, through the BMS, SOC and maximum rechargeable power of a power battery are obtained; through the SCMS, a capacitance, electric quantity and maximum rechargeable power ofa super-capacitor are obtained; and through the MCU, the motor rotation speed and a motor maximum feedback torque are obtained; and through an FCU, the working state of a fuel cell is obtained; and therefore, braking energy recovery is carried out.

Description

technical field [0001] The invention relates to the technical field of energy distribution and management of new energy vehicles, in particular to a hydrogen fuel cell vehicle braking energy recovery system. Background technique [0002] In response to international environmental issues and energy crises, new energy vehicles have been vigorously developed. Driving range is a major constraint on the development of new energy vehicles, so how to improve energy utilization is a very important issue. [0003] In the current state of the art, there are already many technical solutions for braking energy recovery; however, there are no more mature and suitable technical solutions for hydrogen fuel vehicles for hydrogen fuel cells and other auxiliary energy sources (power batteries and supercapacitors). , the imperfect energy recovery strategy will affect the auxiliary energy life and performance, and affect the braking performance and driving experience. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/10B60L15/20B60L50/75B60L58/40B60W30/18
CPCB60L7/10B60L15/2009B60L50/75B60L58/40B60W30/18127Y02T10/70Y02T10/72Y02T90/40
Inventor 程飞郝义国陈华明
Owner 中极氢能汽车(长治)有限公司
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