Amperex Technology Limited

Zhuhai Kingly Technology Co., Ltd

Ping Deng

Li-Yan Zhu

Jei Wei Chang

Provided is a drive head (), a drive assembly (), and a process cartridge (), wherein the drive head () is mounted to a gear (), the drive head () comprises a shaft part (), a claw (), and a first elastic element (), and the shaft part () is sleeved by the claw () which can move stretchably along the shaft part. The drive head (), drive assembly (), and process cartridge () have the advantage that the drive head () is hard to falling off.

Drive head, drive assembly and processing box

A battery pack has series-parallel connected battery cells. An inrush current limiting circuit has current limiting devices and a current limiting tracking means limits inrush current from shorted battery cells. Each current limiting tracking means is coupled to the current limiting devices such that they limit an inrush current from parallel neighbor battery cells when one battery cell on the column shorts. The current limiting devices are variable buffer resistors with a positive temperature coefficient. The current limiting tracking means are heat sinks that thermally couples the buffer resistors together such that the buffer resistors increase in resistance with a temperature increase caused by current flowing through the buffer resistor associated with the shorted battery cell. Current regulating elements are in series with columns of battery cells for preventing inrush current to the columns of the battery cells.

Growing community of inventors

Guangdong, China

Ping Deng