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Fuel cell power system and power battery state of charge control method

A fuel cell and power battery technology, applied in battery/fuel cell control devices, electric vehicles, vehicle components, etc., can solve problems such as slow dynamic response speed of output power and difficulty in meeting motor power requirements, so as to achieve reasonable allocation and improve The effect of slow dynamic response

Active Publication Date: 2021-07-23
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a fuel cell power system to solve the problem that the fuel cell output power dynamic response speed is slow in the existing fuel cell power system and it is difficult to meet the power demand of the motor

Method used

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  • Fuel cell power system and power battery state of charge control method
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  • Fuel cell power system and power battery state of charge control method

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] See figure 1 , which shows a structural block diagram of an embodiment of the fuel cell power system and the vehicle drive system based on the present invention.

[0029] Specifically, as figure 1 As shown, the fuel cell power system includes a fuel cell module, a power battery, and a motor controller. The power battery, as the main power output unit of the power system, is connected to the motor controller, specifically a high-voltage electrical connection. The motor controller is connected to the motor, the motor is mechanically connected to the deceleration / differential mechanism, and the deceleration / differential mechanism is mechanically connected to the wheels.

[0030] Wherein, the fuel cell in the fuel cell module is a fuel cell av...

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Abstract

The invention discloses a fuel cell power system and a method for controlling the state of charge of the power battery. The system includes a fuel cell module, a power battery and a motor controller, and also includes a power control module. The power control module includes a voltage stabilization unit, A DC conversion unit and an energy control unit, one end of the voltage stabilization unit is connected to the fuel cell module, and the other end is connected to the DC conversion unit; the other end of the DC conversion unit is connected to the motor controller, the The energy control unit is at least used for controlling the on / off of the fuel cell module and controlling the output power of the fuel cell module according to the state of charge of the power battery and the required power of the vehicle. The application of the invention can solve the problem in the existing fuel cell power system that it is difficult to meet the power demand of the motor due to the slow dynamic response speed of the output power of the fuel cell.

Description

technical field [0001] The invention belongs to the technical field of control of hybrid electric vehicles, and in particular relates to a fuel cell power system and a method for controlling the state of charge of a power battery. Background technique [0002] Existing automobiles are a symbol of the progress and development of human civilization, and more and more people start to use automobiles. While automobiles bring convenience to human beings, they also cause a series of problems such as shortage of oil resources and environmental pollution. Therefore, the emergence of fuel cell vehicles with "zero emission", "low noise" and "high efficiency" has solved these difficult problems. Fuel cells have the advantages of high energy conversion efficiency, zero emissions, and the convenience of hydrogenation and refueling in the future. Moreover, the source of hydrogen energy is more extensive than other energy sources. Petrochemical energy, nuclear energy, and renewable energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/40
CPCY02T10/70
Inventor 贠海涛林晋召赵玉兰曾欣王胜达董利莹李家月
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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