| 摘要 |
PROBLEM TO BE SOLVED: To completely disconnect a control unit from a battery i.e., to reduce discharge during the time when the machine is not in operation and prevent over discharge during a long term storage and consequently extend the life of the battery. SOLUTION: In an electrically powered working machine mounted with a rechargeable battery 26 on the machine body 11 and carrying out travelling of the machine body 11 and various operations by revolving an electric motor 22 by the battery and controlling the electric motor 22 by a control unit 24, an intermediate material is intervened between the battery 26 and the control unit 24. A connection material (main key 41) is prepared. The connection material is inserted in the intermediate material 42 to connect the battery 26 with the control unit 24. The battery 26 and the control unit 24 are disconnected by removing the connection material from the intermediate material 42. |
