Forklift Fuel Cell Supply System

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.

1 . 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,
 The said fuel cell system  100  connects the said DCDC converting unit  2 , contactor  3 , power supply output end  5 , the said controller  7  connects the said fuel cell system  100 , operation control unit  6 , contactor  3 , the said energy storage device  4  connects the said controller  7 , operation control unit  6  and contactor  3 . 
 
     
     
         2 . According to  claim 1 , the said fuel cell system  100 , energy storage device  4 , DCDC converting unit  2  are installed in proper order on the base plate of the said enclosure  90  along the said enclosure  90  in a direction from front to back. 
     
     
         3 . According to  claim 1 , the installation positions of both the said operation control unit  6  and controller  7  are higher than that of the said DCDC converting unit  2  and energy storage device  4 . 
     
     
         4 . According to  claim 1 , the said operation control unit  6  and controller  7  are installed in proper order along the said enclosure  90  in a direction from front to back. 
     
     
         5 . According to  claim 1 , the said contactor  3  is installed in the area located between the side board of the said enclosure  90  and the said energy storage device  4  on the said base plate. 
     
     
         6 . According to  claim 1 , the electric isolation board  901 , the hydrogen storage system, the filling valve  95  provided in the said enclosure  90  are also included, the said electric isolation board  901  divides the space of the said enclosure  90  into an electronic system space and a gas supply space, the said fuel cell system  100 , DCDC converting unit  2 , contactor  3 , energy storage device  4 , controller  7 , operation control unit  6  are located in the said electronic system space, the said hydrogen storage system, filling valve  95  are located in the said gas supply space, the said gas supply space is located on one side of the said electronic system space. 
     
     
         7 . According to  claim 1 , the output end of the fuel cell  1  that the said fuel cell system  100  contains connects the input end of the said DCDC converting unit  2 , the DCDC converting unit  2  connects through the said contactor  3  the said energy storage device  4 , the output end of the said DCDC converting unit  2  also connects the said power supply output end  5  and the high-power auxiliary component  80  that the said fuel cell system  100  contains, the port of the said energy storage device  4  connects through the said contactor  3  the said power supply output end  5  and the high-power auxiliary component  80  that the said fuel cell system  100  contains, the said operation control unit  6  connects respectively the said energy storage device  4 , DCDC converting unit  2 , controller  7 , the said controller  7  connects respectively the fuel cell that the said fuel cell system  100  contains, auxiliary system  8 , DCDC converting unit  2 , the control end of contactor  3 , the energy storage device  4 , in which the said auxiliary system  8  includes the said high-power auxiliary component  80 ,
 the said operation control unit  6  is used to receive operation signals and supplies power for the said controller  7  and DCDC converting unit  2 , the said controller  7  is used to receive the operation instructions generated by the said operation control unit  6  according to the said operation signals and control according to the said operation instructions the said contactor  3 , DCDC converting unit  2 , auxiliary system  8 , the said controller  7  is also used to measure the state parameters of the fuel cell  1  that the said fuel cell system  100  contains, measure the state parameters of the said energy storage device  4 , measure the state parameters of the said auxiliary system and receive the state data of the said DCDC converting unit  2 . 
 
     
     
         8 . According to  claim 1 , the output end of the said fuel cell  1  connects the input end of the said DCDC converter  21 , the positive pole of the output end of the said DCDC converter  21  connects the positive pole of the said high-power diode  22 , the negative pole of the said high-power diode  22  connects through the said contactor  3  the said energy storage device  4 , the said DCDC converter  21  connects the said controller  7  and is controlled by the said controller  7 , the said DCDC converter  21  connects the said operation control unit  6  and receives power supplied by the said operation control unit  6 . 
     
     
         9 . According to  claim 1 , the said operation control unit  6  changes the electric connection state with the said DCDC converting unit and controller  7  according to the startup operation signal received. 
     
     
         10 . According to  claim 1 , the state data of the said DCDC converting unit  2  include DCDC input current, DCDC input voltage. 
     
     
         11 . According to  claim 1 , any one or more types of following devices are also included:
 Hydrogen safety system, the said hydrogen safety system include the sensors placed respectively in the electronic control system space and gas supply space, the said sensors connect the said controller  7 ;   Monitoring display  91 , with the said monitoring display  91  connecting the said controller  7 ,   ON and OFF button  92 , with the said ON and OFF button  92  connecting respectively the said operation control unit  6  and controller  7 ;   Remote control  93 , the said remote control  93  connecting in a radio mode the said operation control unit  6 ; and   Emergency stop button  94 , with the said emergency stop button  94  connecting the said operation control unit  6 .