Water-cooled fuel cell engine rapid heating system and control method thereof

Abstract

The invention provides a water-cooled fuel cell engine rapid heating system and a control method thereof. The rapid heating system comprises a main circulation heating system and an auxiliary circulation heating system, and by adjusting the working states of all modules in the main circulation heating system and the auxiliary circulation heating system, the rapid heating system has the two working modes of stable heating and rapid heating. When the SOC of the lithium battery of a whole vehicle is normal, the system is in a stable temperature rise working mode, the fluctuation when the temperature of the cooling liquid is controlled at the preset temperature is reduced while the short temperature rise time is guaranteed, and under the condition that the position of a shifting piece or a rotor of an electronic thermostat shakes, the fluctuation with auxiliary circulation temperature rise is smaller than that without auxiliary circulation temperature rise in the temperature control process, so the service life of a galvanic pile is prolonged; and when the SOC of the lithium battery of the whole vehicle is relatively low, the working mode is a rapid temperature rise working mode, and compared with a relatively stable temperature rise working mode, the working mode has a higher temperature rise speed, and the power generation efficiency of the fuel battery is improved.

Description

technical field [0001] The invention belongs to the technical field of fuel cell engines, and in particular relates to a rapid heating system and control method of a water-cooled fuel cell engine. Background technique [0002] With the development of social industrialization, energy issues and environmental issues have become increasingly prominent. Fuel cells have attracted people's attention because of their clean, efficient, and non-polluting features. Among them, proton exchange membrane fuel cells are generally considered to have broad development prospects in the fields of stationary power generation and new energy vehicles due to their low operating temperature, low operating pressure, and not being limited by the Carnot cycle. In the field of fuel cell vehicles, in addition to the fuel cell engine, the whole vehicle is usually equipped with a lithium battery, which is used for the output power required by the fuel cell engine under unsteady conditions such as startin...

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Problems solved by technology

[0004] Aiming at the problems existing in the above-mentioned prior art, the present invention proposes a rapid heating system and control method for a water-cooled fuel cell engine, which solves the problem in the prior art due to the structure of the thermal management system and the vibration of the position of the thermostat paddle or the rotor , but there are problems such as large temperature fluctuations of the coolant entering the stack and low service life of the fuel cell engine

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