Portable power supply system for electrically driven work machine and work machine equipped with such power supply system

Portable power supply system for electrically driven work machine and work machine equipped with such power supply system

  • CN 104,247,196 A
  • Filed: 04/19/2013
  • Published: 12/24/2014
  • Est. Priority Date: 04/23/2012
  • Status: Active Application
First Claim
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1. the portable power source system for electric drive Work machine (1) (30), described Work machine comprises:

  • the propelling apparatus with continous track (8b), utilizes described propelling apparatus can drive described Work machine, can control arm (10), be intended to the instrument being supported on its free end, motor (19), is connected to hydraulic pump (20) and is intended to operating apparatus (8c, 10a) the sap pressure supply medium for described Work machine, main electric power source (30a), described Work machine will be connected with it via cable (2) in the normal operation period, and described main electric power source comprises the fixing alternating current distrbution network (12) with the 400V voltage of such as 50Hz of position, secondary electric power source (30b), comprises the DC energy storage device (29) with the ability storing and supply electric energy, rectifier (31), for being converted to the DC direct current for described energy storage device by the AC alternating current of the described fixing distrbution network (12) from position, coupling device (31, 33, 34, 34 '"'"'), be arranged on described main electric power source (30a), make described coupling device where necessary that described electric power source (30b) can be allowed to be connected to described motor (19) between described electric power source (30b) and described motor (19), to drive described motor, and therefore, temporarily drive described Work machine, it is characterized in that, described coupling device (31, 33, 34, 34 '"'"') comprising;

    DC bus (34, 34 '"'"'), described rectifier (31) is connected DC direct current is supplied to described DC bus from described main electric power source (30a) with described DC bus, control circuit (37), is connected to described DC bus, and by sending continuously and accepting to carry out from the signal of the unit being connected to described DC bus control &

    monitor to be supplied to described motor (19) voltage level from described DC bus.

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