Positec Power Tools (suzhou) Co., Ltd.

State Grid Jiangsu Electric Power Co., Ltd. Marketing Center

Mingming Chen

Qiang Deng

Don Zhendong Gao

Xiao Chen

Qifeng Huang

Zhixin Li

Guoliang Mu

Dongjing Song

Qing Xu

Guofang Xia

Xiao Shao

Zhongdong Wang

Yongxian Yi

Siyun Wang

Provided are a heat shield and a Josephson junction array chip system, the heat shield includes a cryostat, a sensor group, a radiation shield plate, a clamp assembly, and a vacuum shield cover assembly; the cryostat includes a cold head, a first-stage chassis, and a second-stage chassis; the vacuum shield cover assembly includes a first vacuum shield cover, a second vacuum shield cover, and a heat shield aluminum oxide layer; and the cold head is located in the first vacuum shield cover; and the heat shield aluminum oxide layer is coated on a surface of at least one of the first vacuum shield cover or the second vacuum shield cover; the clamp assembly on the radiation shield plate is configured to fix the Josephson junction array chip; and the sensor group adjacent to the Josephson junction array chip is arranged on the radiation shield plate.

Heat shield and Josephson junction array chip system

Embodiments of the present invention relates to a charging device (and a charging method), the charging device for charging a battery pack, the battery pack being detachably mounted on a power tool to provide power to the power tool, wherein the charging device comprises: a parameter detecting unit configured to detect a parameter related to a charging current for the battery pack, the parameter comprising a temperature of the battery pack; and a control unit configured to adjust the charging current for the battery pack according to output of the parameter detecting unit to prevent the temperature of the battery pack from reaching a first preset temperature, wherein when the temperature of the battery pack reaches the first preset temperature, the battery pack enters an over-temperature protection state, thereby preventing a life of the battery pack from being affected, By adjusting the charging current, the present invention can not only ensure that the battery pack does not enter over-temperature protection, but also ensure that the charging current of the battery pack is not too small, so that the battery pack has the highest charging efficiency.

Charging device and charging method

The present disclosure relates to an electric tool and a power supply method for an electric tool. The electric tool includes: a housing; a motor, accommodated in the housing; battery pack mounting portions, at least two battery packs being detachably mounted in the battery pack mounting portions; a main switch, being in an open state or a closed state according to an operation of a user, when the main switch is in a closed state, the battery packs are capable of supplying power to the motor, and when the main switch is in an open state, the battery packs stop supplying power to the motor; and a control assembly, detecting a state of the main switch, when the main switch is in an open state, the control assembly controls transfer of electric energy of a battery pack with a high voltage to a battery pack with a low voltage of the at least two battery packs.

Electric tool and method for supplying power to electric tool

The present invention relates to a charging apparatus, which comprises: a first charging interface and a second charging interface, which respectively and detachably connected to a first energy storage apparatus and a second energy storage apparatus; a power supply conversion circuit, converting external power supply into charging energy; a charging circuit, outputting charging energy output by the power supply conversion circuit to the first charging interface and the second charging interface, wherein the charging circuit comprises a first charging mode and a second charging mode. In the first charging mode, the charging circuit outputs charging energy to both the first charging interface and the second charging interface, and in the second charging mode, the charging circuit selectively outputs charging energy to the first charging interface or the second charging interface. The charging apparatus provided by the present invention possesses pluralities of choices of charging modes, and thus satisfies different charging requirements.

Charging method, charging device, and charging system

Growing community of inventors

Jiangsu, China

Mingming Chen