Patent ID: 7508689

Claim:
A drive system comprising: an inverter connected with a load changing a direct current to an alternating current and supplying said alternating current to said load; and a battery connected to said inverter as a power source for supplying a direct current to said inverter while the load is operating, wherein said inverter comprises: a switching device for changing the direct current to an alternating current by means of switching; and a bipolar-type rechargeable battery connected to said switching device in parallel or in series for smoothing a current from said switching device, said bipolar type rechargeable battery is mounted closer to said switching device than said battery connected to said inverter, wherein said bipolar-type rechargeable battery comprises: a positive electrode with a thickness of 2-5 μm and a negative electrode with a thickness of 2-5 μm that constitute said electrode; and an electrolytic layer with a thickness of 2-5 μm sandwiched between said positive electrode and said negative electrode, wherein said layer consisting of said positive electrode, said electrolytic layer, and said negative electrode is laminated 10-100 layers.