Invention Grant
- Patent Title: Electric working machine, and method for supplying electric power to controller of electric working machine
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Application No.: US16832443Application Date: 2020-03-27
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Publication No.: US11133766B2Publication Date: 2021-09-28
- Inventor: Hitoshi Suzuki , Akihiro Nakamoto
- Applicant: MAKITA CORPORATION
- Applicant Address: JP Anjo
- Assignee: MAKITA CORPORATION
- Current Assignee: MAKITA CORPORATION
- Current Assignee Address: JP Anjo
- Agency: Oliff PLC
- Priority: JPJP2019-075684 20190411,JPJP2019-105681 20190605
- Main IPC: H02P27/06
- IPC: H02P27/06 ; B25F5/02 ; B25B21/02

Abstract:
An electric working machine in one aspect of the present disclosure includes a driving device, a controller, a control power source, and an operation state determiner. The control power source includes a first converter and a second converter. The control power source transitions to a first conversion state when the operation state determiner determines that the controller is in a control operation state. The control power source in the first conversion state supplies a first control current to the controller. The control power source transitions to a second conversion state when the operation state determiner determines that the controller is in a low power operation state. The control power source in the second conversion state (i) stops operation of the first converter, and (ii) supplies a second control current to the controller.
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