Vehicle-mounted fuel cell engine system and control method

An engine system and engine controller technology, which can be used in fuel cells, fuel cell additives, fuel cell heat exchange, etc., and can solve problems such as lack of reliable control methods and energy waste.

Active Publication Date: 2022-01-18
BEIJING SINOHYTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention aims to provide a vehicle-mounted fuel cell engine system, which is used to solve the lack of reliable control methods when the fuel cell in the prior art has low power output and the energy consumption during standby waste problem

Method used

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  • Vehicle-mounted fuel cell engine system and control method
  • Vehicle-mounted fuel cell engine system and control method

Examples

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Embodiment 1

[0062] An embodiment of the present invention discloses a vehicle-mounted fuel cell engine system, including an electric stack, an air compressor, an intake throttle, an intercooler, an exhaust gas throttle, a hydrogen exhaust valve, and an engine controller, such as figure 1 shown.

[0063] Among them, the air inlet of the stack is connected to the output end of the air compressor through the intercooler and the intake throttle in turn, the hydrogen outlet is connected to the hydrogen discharge valve, and the air outlet is connected to the tail exhaust throttle. That is, the air enters the stack through the air compressor, intake throttle, and intercooler in sequence, the hydrogen exhaust valve is set at the hydrogen exit stack port, and the tail exhaust throttle is set at the air exit stack port.

[0064] Optionally, the engine controller is connected to the above-mentioned air compressor, intake throttle, intercooler, exhaust throttle, and hydrogen exhaust valve through wir...

Embodiment 2

[0072] Optimizing on the basis of Example 1, the system also includes the control equipment for hydrogen gas entering the stack and the cooling liquid control equipment for entering the stack, such as figure 2 shown.

[0073] The hydrogen injection control equipment further includes hydrogen injection equipment and control valves. Wherein, the hydrogen injection equipment is used to control the flow rate and pressure of the hydrogen gas entering the stack, and its output end is connected to the hydrogen gas inlet port of the electric stack through the control valve; and, the control terminals of the hydrogen injection equipment and the control valve are respectively Connect to the output of the engine controller.

[0074] The cooling liquid control equipment for stacking further includes a thermostat, a radiator and a water pump; wherein, the cooling liquid outlet of the electric stack is respectively connected to the input end of the radiator and the port 2 of the thermosta...

Embodiment 3

[0102] The present invention also discloses a control method for the vehicle-mounted fuel cell engine system described in Embodiments 1 and 2, which includes the following steps:

[0103] S1. Obtain the required power of the vehicle at regular intervals;

[0104] S2. Determine whether the required power of the vehicle is greater than the minimum output power of the fuel cell, if greater, control the electric stack to output according to the required power of the vehicle, otherwise, perform the next step;

[0105] S3. Monitor the real-time output power of the stack to identify whether the real-time output power exceeds the rated threshold; if so, control the load reduction of the stack and perform purge until the rated threshold is not exceeded;

[0106] S4. Control the discharge of the electric stack, so that the single-chip voltage index of the electric stack reaches the specified threshold range, and execute standby.

[0107] Compared with the prior art, the method provided...

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Abstract

The invention provides a vehicle-mounted fuel cell engine system and a control method thereof, belongs to the technical field of fuel cell engines, and solves the problems that in the prior art, a reliable control method is lacked during low-power output of a fuel cell, and energy is wasted during standby. The system comprises an electric pile, an air compressor, an air inlet throttle valve, an intercooler, a tail exhaust throttle valve, a hydrogen discharge valve and an engine controller. Air sequentially passes through the air compressor, the air inlet throttle valve and the intercooler to enter the electric pile, and the hydrogen discharging valve and the tail exhaust throttle valve are arranged at the hydrogen pile outlet and the air pile outlet respectively. The engine controller is used for regularly judging whether the required power of the whole vehicle is greater than the minimum output power of the fuel cell or not; if yes, the galvanic pile is controlled to output according to the required power of the whole vehicle; otherwise, whether the real-time output power of the electric pile exceeds the rated threshold value or not is recognized, if yes, the electric pile is subjected to load reduction and purging till the rated threshold value is not exceeded, the electric pile is powered on, the single-chip voltage index of the electric pile reaches the specified threshold value range, and standby is executed.

Description

technical field [0001] The invention relates to the technical field of fuel cell engines, in particular to a vehicle-mounted fuel cell engine system and a control method. Background technique [0002] A fuel cell is an efficient energy conversion device that converts chemical energy into electrical energy. Electricity is generated by the reaction of hydrogen and oxygen. Hydrogen is provided by an external hydrogen cylinder, and then enters the stack through a decompression device; air enters the stack after being compressed by an air compressor to compress the gas in the external environment. [0003] When the fuel cell engine is running normally, the air and hydrogen react inside the stack, and the output power changes accordingly according to the external demand. When the fuel cell engine is applied in the vehicle, it mainly outputs according to the demand of the power battery or motor on the vehicle. When the vehicle has no power demand or only a small power demand for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04007H01M8/04014H01M8/04029H01M8/04082H01M8/04089H01M8/04701H01M8/04746H01M8/04858H01M8/04992
CPCH01M8/04022H01M8/04029H01M8/04074H01M8/04097H01M8/04201H01M8/04708H01M8/04753H01M8/04873H01M8/04992Y02E60/50Y02T90/40
Inventor 李文文方川张潇丹赵兴旺李飞强高云庆
Owner BEIJING SINOHYTEC
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