Fuel cell heat energy recovery system, method and fuel cell vehicle
A fuel cell and heat energy recovery technology, which is applied in the direction of fuel cell heat exchange, fuel cells, fuel cell additives, etc., can solve the problems of low heat energy recovery and utilization rate, and achieve the effect of increasing utilization rate and increasing working temperature
Active Publication Date: 2022-05-03
HUNAN XINGBIDA NETLINK TECH CO LTD
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[0004] The invention provides a fuel cell heat energy recovery system, method and fuel cell vehicle, which are used to solve the defect of low fuel cell heat energy recovery utilization rate in the prior art
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[0044] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0045] Fuel cell vehicles are known as "the most authentic new energy vehicles" due to their advantages of high efficiency, zero emissions, and low noise, and are an important trend in the future development of the automotive industry. As the core of fuel cell vehicles, the hydrogen and oxygen in the stack of the fuel cell system undergo an electrochemical reaction under the action of a catal...
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The present invention provides a fuel cell heat recovery system and method and a fuel cell vehicle. The fuel cell heat recovery system includes: a battery stack branch, a battery water heating branch and a thermoelectric power generation branch. The battery water heating branch is provided with a first valve , the first valve is used to open when the current operating temperature of the fuel cell is lower than the operating temperature threshold, so that the heat exchange medium of the heated fuel cell stack flows through the water heating branch of the battery; the thermoelectric power generation branch is provided with a second valve, the second The valve is used to open when the SOC of the fuel cell is lower than the charging threshold, so that the thermoelectric power generation device on the thermoelectric power generation branch converts the heat energy of the fuel cell into electric energy for recycling to the fuel cell. The invention can not only recover the heat energy of the fuel cell to increase the working temperature of the fuel cell, but also convert the heat energy of the fuel cell into electrical energy that can be recovered to the fuel cell, thereby greatly improving the utilization rate of the heat energy recovery of the fuel cell.
Description
technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell heat recovery system and method and a fuel cell vehicle. Background technique [0002] A fuel cell is a high-efficiency power generation device that directly converts the chemical energy of fuel into electrical energy by electrochemical reaction without burning fuel. During the electrochemical reaction of the fuel cell, a large amount of heat energy is generated, so the heat energy of the fuel cell needs to be recovered. [0003] At present, the heat energy of the fuel cell is mostly recovered through the heating system of the fuel cell vehicle, but when the vehicle does not turn on the heating system, the heat energy of the fuel cell cannot be recovered, resulting in a low recovery rate of heat energy of the fuel cell. Contents of the invention [0004] The invention provides a fuel cell heat recovery system and method and a fuel cell vehicle, which are used to...
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IPC IPC(8): H01M8/04007H01M8/04014H01M8/04029H01M8/0432H02N11/00
CPCH01M8/04029H01M8/04074H01M8/04052H01M8/0432H01M8/04014H01M8/04037H02N11/002H01M2250/20Y02E60/50
Inventor 游天成周海刘江
Owner HUNAN XINGBIDA NETLINK TECH CO LTD