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Fuel cell hybrid electric vehicle energy storage system and energy distribution method based on elastic energy storage

A technology of hybrid electric vehicles and fuel cells, applied in the direction of electric vehicles, battery/fuel cell control devices, traction of mechanical energy storage, etc., can solve the problems of short life, slow battery charging, polluting the environment, etc., and achieve long life and prolongation The effect of increasing the lifespan and cruising range

Inactive Publication Date: 2019-03-22
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of slow charging, short service life and environmental pollution of batteries used in existing hybrid electric vehicles, and proposes an energy storage system and energy distribution method for fuel cell hybrid electric vehicles based on elastic energy storage

Method used

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  • Fuel cell hybrid electric vehicle energy storage system and energy distribution method based on elastic energy storage
  • Fuel cell hybrid electric vehicle energy storage system and energy distribution method based on elastic energy storage

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specific Embodiment approach 1

[0029] Specific implementation mode 1. Combination figure 1 Describe this embodiment, the fuel cell hybrid electric vehicle energy storage system based on elastic energy storage described in this embodiment, it includes a battery management system 1, an elastic energy storage device 2, a super capacitor 3, a fuel cell 4, a bidirectional DC / DC Switch 5, motor 6, mechanical transmission device 7, drive controller 8, vehicle controller 9, brake pedal sensor 10, accelerator pedal sensor 11 and vehicle speed sensor 12;

[0030] The brake pedal sensor 10 is used to collect the brake pedal opening signal of the electric vehicle, and the signal output end of the brake pedal sensor 10 is connected to the vehicle controller 9 brake pedal opening signal input end;

[0031] The accelerator pedal sensor 11 is used to collect the accelerator pedal opening signal of the electric vehicle, and the signal output end of the accelerator pedal sensor 11 is connected to the vehicle controller 9 acc...

specific Embodiment approach 2

[0040] Specific Embodiment 2. The energy distribution method of the fuel cell hybrid electric vehicle energy storage system based on elastic energy storage described in this embodiment, the specific steps of the method are:

[0041] Step 1, adopt brake pedal sensor 10 to gather the brake pedal opening signal of electric vehicle, adopt accelerator pedal sensor 11 to gather the accelerator pedal opening signal of electric vehicle, adopt vehicle speed sensor 12 to gather the vehicle speed signal of electric vehicle, meanwhile, through battery The management system 1 obtains the energy storage state of the elastic energy storage device 2, the state of charge of the supercapacitor 3 and the remaining power of the fuel cell 4;

[0042] Step 2, the vehicle controller 9 judges whether the remaining power of the fuel cell 4 is greater than the battery state of charge threshold α, if so, execute step 3, otherwise, the vehicle controller 9 sends a warning signal that the battery power is lo...

specific Embodiment approach 3

[0051] Specific embodiment three. This embodiment is a further description of the energy distribution method of the fuel cell hybrid electric vehicle energy storage system based on elastic energy storage described in specific embodiment two. In step three, the vehicle controller 9 according to the vehicle speed and Calculate the total drive power P required by the electric vehicle based on the opening of the accelerator pedal e pass:

[0052] T qd =T qdmax alpha

[0053] P e =T qd ω

[0054] Realize, where, T qd is the target driving torque of the motor, T qdmax is the maximum driving torque of the motor, α is the opening of the accelerator pedal, and ω is the speed of the motor.

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Abstract

The invention provides a fuel cell hybrid power car energy storage system based on elastic energy storage and an energy distribution method and relates to a fuel cell hybrid power car energy storage structure and an energy distribution method. The problems that a cell used in an existing hybrid power car is slow in charging and short in life and meanwhile pollutes environments are solved. According to the fuel cell hybrid power car energy storage system based on elastic energy storage and the energy distribution method, a fuel cell, a super capacitor and an elastic energy storage device are adopted for energy supplement, and the fuel cell adopts the mode of corresponding fuel supplement for charging and has the characteristics that charging is quick, and pollution is avoided; the super capacitor has the characteristics that the power density is high, and the circular life is long, and the defect that the power density of the fuel cell is low is made up; and the elastic energy storage device has been applied to power grid energy storage and has the characteristics that the energy storage capacity is large, pollution is avoided, and the life is long. The fuel cell hybrid power car energy storage system based on elastic energy storage and the energy distribution method are suitable for a power car provided with a composite energy storage system with the elastic energy storage device, the fuel cell and the super capacitor.

Description

technical field [0001] The invention relates to an energy storage structure and an energy distribution method of a fuel cell hybrid electric vehicle. Background technique [0002] Prolonging the battery cycle life and increasing the mileage of electric vehicles are two important directions in the research of electric vehicles. Therefore, a composite energy system has been proposed, and various electric energy storage components have been applied to electric vehicles, including lead-acid batteries. , Ni-MH batteries, lithium-ion batteries, fuel cells and supercapacitors, etc. At present, electric vehicles including lead-acid batteries, nickel-metal hydride batteries, and lithium-ion battery energy storage components have pollution problems, life problems and slow charging problems respectively. Contents of the invention [0003] The invention aims to solve the problem of slow charging, short service life and environmental pollution of batteries used in existing hybrid elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L50/70B60L50/30B60L50/40
CPCB60L50/30B60L50/40B60L58/30B60L2240/54Y02T10/70Y02T90/40
Inventor 吴晓刚梅尊禹
Owner HARBIN UNIV OF SCI & TECH
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