Abstract: This invention provides a kind of compact type fuel cell supply system, consisting of fuel cell, DCDC converting unit, contactor, energy storage device, controller, auxiliary system, power supply output end, operation control unit, with the contactor being a normal open type high-current contactor, the output end of the fuel cell connecting the input end of DCDC converting unit, the DCDC converting unit connecting the energy storage device through the contactor, the output end of DCDC converting unit also connecting the power supply output end and the high-power auxiliary component that the auxiliary system contains, the port of the energy storage device connecting the power supply output end and auxiliary system through the contactor, the operation control unit connecting the energy storage device, DCDC converting unit, controller respectively, the controller connecting the fuel cell, DCDC converting unit, the control end of contactor, the energy storage device and the auxiliary system respectively.

Abstract: This invention provides a compact safety type fuel cell system, including an enclosure and the electronic control system, electric isolation board, gas isolation board, fuel cell stack system, hydrogen delivery device installed in the enclosure. The electric isolation board divides the inside of the enclosure into electronic control system space and fuel cell stack working space, the gas isolation board divides the fuel cell stack working space into hydrogen side space and air inlet space, the air inlet space and the air inlet port of the fuel cell stack system are connected, the fuel cell stack system enclosure connects with the gas isolation board hermetically. This invention achieves electric isolation in a limited space and the effective isolation between air and hydrogen, which can directly replace the lead-acid cell system on battery-powered forklift being widely used now, requires no forklift redesign due to such problems as insufficient placing space, etc. and facilitates upgrading.

Abstract: This invention provides a kind of mixed power supply energy management method for fuel battery, including the following steps: initialization; control the output current of DCDC converting unit according to the measured energy storage device voltage and the actual current outputted by the DCDC converting unit, respond to the energy need resulting from load condition change and at the same time ensure the energy storage device to be in a best charge state; send a current setting instruction to the DCDC converting unit. This invention does not adopt the SOC calculation mode any more, the system no longer relies on the accuracy, reliability of current sensor; and this invention is strongly compatible, highly reliable, strongly practical and stable in output voltage, with the same system being applicable to more vehicles of different models (forklift) and parameter correction being unnecessary.

Abstract: This invention provides a kind of compact type fuel cell supply system, consisting of fuel cell, DCDC converting unit, contactor, energy storage device, controller, auxiliary system, power supply output end, operation control unit, with the contactor being a normal open type high-current contactor, the output end of the fuel cell connecting the input end of DCDC converting unit, the DCDC converting unit connecting the energy storage device through the contactor, the output end of DCDC converting unit also connecting the power supply output end and the high-power auxiliary component that the auxiliary system contains, the port of the energy storage device connecting the power supply output end and auxiliary system through the contactor, the operation control unit connecting the energy storage device, DCDC converting unit, controller respectively, the controller connecting the fuel cell, DCDC converting unit, the control end of contactor, the energy storage device and the auxiliary system respectively.

Abstract: This invention provides a forklift fuel cell supply system consists of enclosure 90 and the fuel cell system 100, DCDC converting unit 2, contactor 3, energy storage device 4, controller 7 provided in the said enclosure 90, which also consists of the power supply output end 5 provided outside the said enclosure 90 and the operation control unit 6 provided in the said enclosure 90, in which the said contactor 3 is a normal open type high-current contactor, the said DCDC converting unit 2 includes the DCDC converter 21 and high-power diode 22 connecting with it. This invention is compact in structure and facilitates such work as system installation, overhaul and maintenance, etc. This invention can contain an energy storage device with a higher capacity, making the energy storage device be in a charging and discharging condition with a low multiplying factor and extending the service life of the energy storage device and the time for which the system can be left unused.

Abstract: This invention provides a kind of mixed power supply energy management method for fuel battery, including the following steps: initialization; control the output current of DCDC converting unit according to the measured energy storage device voltage and the actual current outputted by the DCDC converting unit, respond to the energy need resulting from load condition change and at the same time ensure the energy storage device to be in a best charge state; send a current setting instruction to the DCDC converting unit. This invention does not adopt the SOC calculation mode any more, the system no longer relies on the accuracy, reliability of current sensor; and this invention is strongly compatible, highly reliable, strongly practical and stable in output voltage, with the same system being applicable to more vehicles of different models (forklift) and parameter correction being unnecessary.

Abstract: This invention provides an improved forklift fuel cell supply system consists of enclosure 90 and the fuel cell system 100, DCDC converting unit 2, contactor 3, energy storage device 4, controller 7 provided in the said enclosure 90, which also consists of the power supply output end 5 provided outside the said enclosure 90 and the operation control unit 6, electric isolation board 901, hydrogen storage system, filling valve 95 provided in the said enclosure 90, in which the said contactor 3 is a normal open type high-current contactor, the said DCDC converting unit 2 includes the DCDC converter 21 and high-power diode 22 connecting with it. This invention is compact in structure and facilitates such work as system installation, overhaul and maintenance, etc.

Abstract: This invention provides a compact safety type fuel cell system, including an enclosure and the electronic control system, electric isolation board, gas isolation board, fuel cell stack system, hydrogen delivery device installed in the enclosure. The electric isolation board divides the inside of the enclosure into electronic control system space and fuel cell stack working space, the gas isolation board divides the fuel cell stack working space into hydrogen side space and air inlet space, the air inlet space and the air inlet port of the fuel cell stack system are connected, the fuel cell stack system enclosure connects with the gas isolation board hermetically. This invention achieves electric isolation in a limited space and the effective isolation between air and hydrogen, which can directly replace the lead-acid cell system on battery-powered forklift being widely used now, requires no forklift redesign due to such problems as insufficient placing space, etc. and facilitates upgrading.

Abstract: This invention provides a kind of miniaturized forklift fuel cell supply system consists of enclosure 90 and the fuel cell system 100 provided in the said enclosure 90, DCDC converting unit 2, contactor 3, energy storage device 4, controller 7, which also consists of the power supply output end 5 provided outside the said enclosure 90 and the operation control unit 6 provided in the said enclosure 90, in which, the said contactor 3 is a normal open type high-current contactor, the said DCDC converting unit 2 includes the DCDC converter 21 and high-power diode 22 connecting with it. This invention is compact in structure and facilitates such work as system installation, overhaul and maintenance, etc. This invention can contain an energy storage device with a higher capacity, making the energy storage device be in a charging and discharging condition with a low multiplying factor and extending the service life of the energy storage device and the time for which the system can be left unused.