Fuel cell-lithium battery hybrid power heat management system and operation method

Abstract

The invention discloses a fuel cell-lithium battery hybrid power heat management system and an operation method. The system comprises a fuel cell air supply system, an air flow channel, a cooling water flow channel, a water-cooled lithium battery pack, a heating resistance wire, a cooling water tank, a water-cooled fuel cell, one-way electromagnetic valves and an electric control module, wherein the fuel cell air supply system provides the fuel cell with fuel; and cooling water is heated by electricity discharged by lithium batteries and passes through the fuel cell, and the temperatures of various temperature sensors are judged through the electric control module to open the corresponding electromagnetic valves to achieve control on switches of different flow channels, thereby achieving management on the heat of a fuel cell-lithium battery hybrid power system. The cold starting performance of the fuel cell is improved and the starting speed of the fuel cell is improved when the environment temperature is relatively low; and the lithium batteries can be heated through the heat released by the fuel cell to reach appropriate temperatures for charging and discharging. When the environment temperature is relatively high, the lithium batteries can also be cooled.

Description

technical field [0001] The invention belongs to the field of fuel cells, and relates to a fuel cell-lithium battery hybrid heat management system and an operation mode. Background technique [0002] With the rapid development of the world economy, the "energy crisis" caused by the surge of energy consumption and the waste of resources has attracted the attention of the whole world. The development of new energy sources for internal combustion engines has also received more and more attention from scientists. Therefore, the development of new energy sources to replace traditional fossil fuels has become a long-term important energy development strategy for more and more countries. Among the developed new energy sources, hydrogen energy is considered to be one of the most potential new energy sources. Its advantages are: large reserves, high calorific value; Compared with particles, only water is released after the hydrogen combustion reaction, which will not cause environme...

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Problems solved by technology

[0007] The object of the present invention is to propose a fuel cell-lithium battery hybrid power thermal management system and its operating mode, to solve the problem of thermal management of the existing fuel cell-lithium battery hybrid power system, to improve the fuel cell low-temperature start-up speed, protect Fuel cells; maintain lithium batteries to operate at an appropriate temperature; and use waste heat to heat the cab in low temperature environments, keeping the driver at an appropriate temperature

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