Fuel cell power system for vehicle

A fuel cell and power system technology, applied in the direction of fuel cells, fuel cell additives, battery/fuel cell control devices, etc., can solve problems such as long start-up waiting time, complex structure, and too many components, and achieve a reduction in system The effect of occupying volume and weight, simplifying the power system, and reducing system energy consumption

Pending Publication Date: 2018-04-06
ZHONGSHAN BROAD OCEAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fuel cell power system for vehicles, which can avoid the excessive number of electric air compressor components in the fuel cell power system in the prior art; secondly, when it is applied to the whole vehicle, it can effectively solve the problem of complex structure and start-up waiting time. too long problem

Method used

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  • Fuel cell power system for vehicle
  • Fuel cell power system for vehicle
  • Fuel cell power system for vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 , figure 2 , image 3 As shown, the fuel cell power system for a vehicle of the present invention includes: a fuel cell stack, a hydrogen supply system, an air supply system, a DC / DC converter, a power battery pack, and a main drive motor system. The air supply system includes An air compressor assembly, a filter muffler and a humidifier. The main drive motor system includes a main drive motor and a motor controller. The main drive motor is a dual-shaft extension motor. One end is connected to the vehicle power transmission system and the other end is connected to air Compressor components, the main drive motor provides energy for the vehicle power transmission system and air compressor components.

[0035] A clutch is arranged between the biaxial extension motor and the air compressor assembly.

[0036] The air compressor assembly includes a compressor and a speed increaser.

[0037] The clutch is an electromagnetic clutch or a mechanical clutch with pneuma...

Embodiment 2

[0047] Such as Figure 4 As shown, the structure of this embodiment is basically the same as that of the first embodiment. The difference lies in: the vehicle power transmission system mainly includes a main reducer / differential; a gearbox is provided between the main drive motor and the vehicle power transmission system. The gearbox has a reverse gear position. The main drive motor is directly connected with the air compressor assembly, eliminating the clutch between the main drive motor and the air compressor assembly.

[0048] The vehicle adopts a cold start method when starting. The specific process is: when the vehicle power is turned on, the 12V / 24V low-voltage power output of the power battery pack provides low-voltage input for the vehicle control system and battery management system BMS, and the battery management system BMS controls the power battery The process of charging and discharging the battery; when the throttle signal is given, the switches K1, K2, and K4 are i...

Embodiment 3

[0052] Such as Figure 5 As shown, the structure of this embodiment is basically the same as that of the first embodiment. The difference lies in: the vehicle power transmission system mainly includes a main reducer / differential; an electromagnetic clutch is provided between the main drive motor and the vehicle power transmission system.

[0053] This embodiment is similar to the working conditions of the first embodiment. The difference is that a clutch is provided between the main drive motor and the main reducer / differential. When the clutch is disconnected, the vehicle can be warmed up. That is, when the vehicle is hot or idling, the switch K2 is in the open state, and the switches K1, K3, and K4 are in the closed state. The power battery pack provides energy to the main drive motor and drives the air compressor assembly to rotate to make the fuel cell stack The voltage is gradually increased to the operating voltage required by the system. When the fuel cell stack voltage re...

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PUM

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Abstract

The invention provides a fuel cell power system for a vehicle. The fuel cell power system comprises a fuel cell stack, a hydrogen supply system, an air supply system, a DC / DC converter, a power cell pack and a main driving motor system. By combining the characteristics of an electric air compressor, a driving motor and the vehicle travelling working condition, a motor of the electric air compressor and a main driving motor are combined in use, so that the motor of the air compressor and a motor controller are omitted; and energy is supplied to the air compressor through the main driving motorsystem when the fuel cell pack operates, so that the air compressor supplies air meeting the requirement of the working condition to the fuel cell stack. Through assisting of the power cell pack, preheating preparation of the fuel cell stack is carried out at the time of starting of the vehicle. Thus, structural simplification and control simplification of the fuel cell power system are achieved,the occupied space and weight of the system are reduced, waiting is not needed at the time of starting of the vehicle, and accordingly energy consumption of the system is further reduced.

Description

Technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a vehicle fuel cell power system and a new energy electric vehicle applied thereto. Background technique [0002] The fuel cell stack uses the electrochemical reaction between the hydrogen stored in the gas cylinder and the oxygen from the air to generate electricity, which provides a source of power for electrical equipment. [0003] Generally, the fuel cell power system needs to match the electric air compressor according to the power size. The electric air compressor includes compressor components, a motor, and a motor controller. When the electric air compressor is started, an external vehicle low-voltage 12 / 24V power supply is required to provide starting energy, and the low-voltage power supply needs to be converted to the high-voltage DC-DC converter required by the electric air compressor motor controller. After waiting for a period of time, the fuel cell stack can reach t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18H01M8/04089H01M8/04082H01M8/04746
CPCB60L58/40H01M8/04104H01M8/04201H01M8/04753H01M8/04776H01M2220/20Y02E60/10Y02E60/50Y02T10/70
Inventor 邓佳陈星富
Owner ZHONGSHAN BROAD OCEAN
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