Hydrogen circulating device
A circulation device, hydrogen technology, applied in the direction of electrical components, reactant parameter control, fuel cell additives, etc., can solve the problems of hydrogen fuel cell system performance degradation, hydrogen circulation pump cannot operate normally, battery stack damage, etc.
Inactive Publication Date: 2021-08-20
河北金士顿新能源科技有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a hydrogen circulation device, aiming to solve the problem that when the temperature is low, the water vapor will condense into ice, and the pump rotor will be frozen. The circulation pump cannot operate normally, resulting in a decrease in the performance of the hydrogen fuel cell system, and in serious cases, a technical problem that will cause damage to the battery stack
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[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0031] It should be noted that when an element is referred to as being “connected to” or “connected to” another element, it may be directly connected to another element or there may be an intervening element. When an element is referred to as being "connected to" or "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" or "provided on" another element, it can be directly on the other element or intervening elements may also be present. Whe...
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The invention provides a hydrogen circulating device, which belongs to the technical field of fuel cells, and comprises a pump shell, a pump rotor and a hydrogen throttling assembly; the pump shell is provided with a circulating cavity, and is provided with a circulating gas inlet, a circulating gas outlet and a hydrogen purging port which are communicated with the circulating cavity; the pump rotor is arranged in the circulating cavity; and the hydrogen throttling assembly is arranged outside the circulating cavity and communicates with the circulating cavity through the hydrogen purging opening, and ice breaking is achieved through hydrogen with the throttling temperature rising characteristic. According to the hydrogen circulating device, the hydrogen purging opening is formed in the pump shell, the hydrogen throttling assembly is arranged at the hydrogen purging opening, hydrogen with the throttling and heating characteristics is introduced into the circulating cavity, heating and icebreaking can be conducted on the frozen position, freezing of the pump rotor is avoided, the motor assembly can operate normally, damage to the motor assembly is reduced, the normal operation of the hydrogen circulating device is ensured, the influence on the performance of the hydrogen fuel cell system is reduced, and the damage to the cell stack is reduced.
Description
technical field [0001] The invention belongs to the technical field of fuel cells, and more specifically relates to a hydrogen circulation device. Background technique [0002] A hydrogen fuel cell is an electrochemical reaction device that uses hydrogen and oxygen in the air as the reaction gases of the anode and cathode, respectively, and generates electricity through a catalytic reaction, and generates water without any pollution. Hydrogen fuel cells have the characteristics of clean, efficient, pollution-free, high energy efficiency, and high reliability. They have broad application prospects in backup power supplies, small and medium-sized power stations, and new energy vehicles. [0003] As an important part of the hydrogen fuel cell system, the hydrogen circulation pump can circulate and pressurize the excess hydrogen discharged from the battery stack, so that the hydrogen can flow into the battery stack again for reaction. Since the excess hydrogen discharged from t...
Claims
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IPC IPC(8): H01M8/04082H01M8/04089H01M8/04223H01M8/04225H01M8/0432H01M8/04746
CPCH01M8/04097H01M8/04104H01M8/04201H01M8/04253H01M8/0432H01M8/04753H01M8/04776H01M8/04225Y02E60/50
Inventor 王红张学智杨登峰
Owner 河北金士顿新能源科技有限公司