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US 2026/0158700 A1Published application
Handheld power tool and chainsaw
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsZhe Wu, Jifeng Feng, Xiangmin Shen, Zhaodi Ou, Yang Li, Haoyu Wang
Life of this patent
Estimating the term…
Abstract
Provided are a handheld power tool and a chainsaw. After the battery pack is mounted on the handheld power tool, in the case where the handheld power tool does not satisfy the balance requirement, the electric motor does not start.
Claims20
A handheld power tool, comprising:
- a tool body;
- a battery mounting portion disposed on the tool body and used for mounting a battery pack;
- an electric motor disposed in the tool body;
- and
- a control circuit, configured to control a startup or a rotational state of the electric motor, comprising a parameter detection module for acquiring battery communication data at least when the battery pack is mounted onto the battery mounting portion and a controller for determining, according to the battery communication data, a center of gravity of the tool body on which the battery pack is mounted and for not starting the electric motor when a change in the center of gravity relative to a preset center of gravity is greater than a change threshold.
2 more elements
A handheld power tool, comprising:
- a tool body;
- a battery mounting portion disposed at a rear end of the tool body and used for mounting a battery pack;
- an electric motor disposed in the tool body;
- and
- a control circuit, configured to control startup or a rotational state of the electric motor, comprising a parameter detection module for acquiring battery communication data at least when the battery pack is mounted onto the battery mounting portion and a controller for identifying the battery pack according to the battery communication data and for not starting the electric motor when a type of the battery pack does not satisfy a startup requirement.
2 more elements
A chainsaw, comprising:
- a tool body;
- a battery mounting portion disposed on the tool body and used for mounting a battery pack;
- an electric motor disposed in the tool body;
- and
- a control circuit, configured to control startup or a rotational state of the electric motor, comprising a parameter detection module for acquiring battery communication data at least when the battery pack is mounted onto the battery mounting portion and a controller for determining, according to the battery communication data, a center of gravity offset of the tool body on which the battery pack is mounted, and for not starting the electric motor when the center of gravity offset is greater than an offset threshold.
2 more elements
Dependencies are inferred from the claim text.