The invention relates to an automobile hydrogen cell temperature control system and a control method thereof. The temperature control system comprises a thermostat, an electronic water pump, a three-way valve, a radiator and a fuel gas heater, an interface 2 of the thermostat is connected with a cooling liquid outlet of a cell electric pile, an interface 1 of the thermostat is connected with a liquid inlet of the electronic water pump, a liquid outlet of the electronic water pump is connected with an interface 1 of the three-way valve, and an interface 2 of the three-way valve is connected with a cooling liquid inlet of the cell electric pile; an interface 3 of the thermostat is connected with one end of the radiator, and the other end of the radiator is connected with the liquid inlet ofthe electronic water pump; an interface 3 of the three-way valve is connected with a liquid inlet of the fuel gas heater, and a gas outlet of the fuel gas heater is connected with a cooling liquid inlet of the cell electric pipe; and the fuel gas heater is connected with an air pipeline and a hydrogen pipeline, and the hydrogen pipeline is connected with a hydrogen storage cylinder. The control system has the advantages of simple structure, flexible control and high adaptability, and the control method has the advantages of simple procedures, high execution efficiency and safe and reliable use.

Automobile hydrogen cell temperature control system and control method thereof

The invention discloses a fuel cell cold start device and a control method, and belongs to the technical field of automobiles. The device comprises a first circulating pump, a first heat exchanger anda first electric heating mechanism which are sequentially connected through pipelines to form a first circulating loop, and a second circulating pump, a second heat exchanger and a second electric heating mechanism which are sequentially connected through pipelines to form a second circulating loop. The first heat exchanger can heat a power cell, and the second heat exchanger can heat a fuel cell. The device also comprises a system controller and a power motor. The system controller is electrically connected with the fuel cell, the power cell, the first circulating pump, the first electric heating mechanism, the second circulating pump, the second electric heating mechanism and the power motor. Compared with the prior art, under the condition that the temperature of the fuel cell is lowerthan zero DEG C, the fuel cell can work with high output power, the fuel cell is heated, freezing of water generated in the fuel cell is avoided, rapid cold start is achieved, and the performance ofthe whole vehicle is improved.

Fuel cell cold start device and control method

The invention provides a fuel cell low-temperature cold start assembly, a control method thereof and a fuel cell control system. The low-temperature cold start assembly of the fuel cell comprises a fuel cell stack, wherein a catalyst module is arranged in the fuel cell stack; a reaction gas supply system which is used for providing mixed gas capable of generating exothermic reaction, wherein the mixed gas is conveyed to the catalyst module, reacts under the action of the catalyst module to generate heat and is used for heating the fuel cell stack. By arranging the catalyst module in the fuel cell stack, the stack is directly heated by heat generated by reaction of mixed gas, so the temperature of the stack rises to a working temperature in a short time, and the success rate of cold start is increased.

Fuel cell low-temperature cold start assembly, fuel cell control system and control method

The invention discloses a fuel cell cold start device and a control method thereof, and belongs to the technical field of energy. The device comprises a combustion heating mode and an electric heatingmode, and can ensure that when the SOC of the lithium battery of the whole vehicle is low and electric heating power cannot be output, heat energy generated by oxyhydrogen combustion is directly utilized to realize quick start of the fuel cell engine in a low-temperature environment. According to the control method, the corresponding starting strategy can be determined according to the SOC stateof the power battery and the requirement for the cold starting temperature rising speed. When the SOC of the power battery is too low, hydrogen and air are directly introduced into the combustion heater, and circulating cooling water is heated through oxyhydrogen combustion reaction, so that the temperature of the galvanic pile is increased, and the electric quantity of the power battery is prevented from being consumed. The hydrogen preheater and the air preheater can fully utilize waste heat carried by combustion high-temperature tail gas to preheat reaction gas, the enthalpy value of tail gas exhausted to the environment is reduced, and the energy efficiency of the system is improved.

Fuel cell cold start device and control method thereof

The invention discloses a control method for a thermal management system of a fuel cell vehicle, and belongs to the field of fuel cell vehicles. The control method comprises the following steps that the temperature Ttank of cooling liquid in a preheating water tank is compared with a quick start temperature threshold T1 set in a FCCU; if the temperature Ttank of the cooling liquid in the preheating water tank is not smaller than the quick start temperature threshold T1, the preheating water tank is communicated with a cooling loop of a voltaic pile, and the preheating water tank does not perform supplementary heating; and if the temperature Ttank of the cooling liquid in the preheating water tank is smaller than the quick start temperature threshold T1, a HCU checks the SOC state of a power battery. According to the control method provided by the invention, the temperature of the cooling liquid in the preheating water tank is compared with the quick start temperature threshold; whethersupplementary heating of the preheating water tank needs to be conducted or not is judged first, if yes, supplementary heating is further conducted according to the SOC state, then use of the preheating water tank in the thermal management system is reasonably arranged, therefore the starting procedure is simplified, and the starting speed of the fuel cell is increased.

Control method for thermal management system of fuel cell vehicle

The invention belongs to the technical field of fuel cell starting devices, relates to a combined low-temperature cold starting device for a fuel cell power system and a control method, and solves a problem that the fuel cell deals with difficult startup by adopting different heating modes under a low-temperature state so as to ensure the stable operation of the fuel cell. The combined low-temperature cold starting device is provided with a temperature sensor a, an electric heater, a liquid coolant circulating pump a, a power battery and an electric heater which are used for an electric heaterheating start mode, a temperature sensor b, a liquid coolant circulating pump b, a combustion gas heater and a fuel cell stack which are used for a high-temperature gas heating start mode, a temperature sensor c, a mixed gas heater and a fuel cell stack which are used for a fuel cell stack electrode catalytic heating start mode. The invention further provides a control method of the combined low-temperature cold starting device for the fuel cell power system, which selects different start modes through detecting the temperature.

Combined low-temperature cold starting device for fuel cell power system and control method

The utility model belongs to the technical field of fuel cell starting devices, relates to a combined low-temperature cold starting device of a fuel cell power system and a control method, and solvesthe problem that a fuel cell is difficult to start by adopting different heating modes in a low-temperature state, so that the fuel cell stably operates. The combined low-temperature cold starting device comprises a temperature sensor a, an electric heater, a cooling liquid circulating pump a, a power battery and an electric heater, wherein the electric heater is used for an electric heater heating starting mode; the temperature sensor b, the cooling liquid circulating pump b, the combustion gas heater and the fuel cell stack are used for a high-temperature fuel gas heating starting mode; thetemperature sensor c, the mixed gas heater and the fuel cell stack are used for a fuel cell stack electrode catalytic heating starting mode; the utility model further provides a control method of thecombined low-temperature cold starting device of the fuel cell power system, and different starting modes are selected by detecting the temperature.

Fuel cell power system combined low-temperature cold starting device

The invention belongs to the technical field of hydrogen fuel cells, and relates to a hydrogen fuel cell low-temperature starting and emergency starting mechanism based on an ejector. The invention comprises a hydrogen tank, a combustor, a storage battery, an electric control switch, a manual piezoelectric ceramic igniter, a water tank, a water pump, a heat exchanger, a turbine, a clutch, a gas compressor, an air tank, an electromagnetic valve, a hydrogen fuel cell set and the like. The combustor is internally provided with an ejector, a spark plug and a combustion chamber. Two branches of theexhaust pipe of the combustion chamber are respectively communicated with the turbine, and the two turbine exhaust pipes are communicated with the heat exchanger. When the fuel cell needs to be started, hydrogen is introduced into the combustor, and the electric control switch or the manual piezoelectric ceramic igniter is pressed to ignite the hydrogen. The combustion exhaust gas blows the turbine to drive the water pump to supply water to the heat exchanger on one hand and the gas compressor to pump fresh air to the combustor and the fuel cell on the other hand. The high-temperature exhaustgas from the two turbines enters the heat exchanger to heat water and further heat the fuel cell set to reach the specified working temperature, and the fuel cell can be started normally at the moment. The hydrogen fuel cell low-temperature starting and emergency starting mechanism can realize the low-temperature starting and the emergency starting of the hydrogen fuel cell and has the advantagesof simple structure and high reliability.

Xie Fangxi

Papers

Combined low-temperature cold starting device for fuel cell power system and control method

Fuel cell power system combined low-temperature cold starting device

Hydrogen fuel cell cold starting and emergency starting device based on ejector