Electric energy storage device and electric tool system
AssigneeGreenworks (Jiangsu) Co., Ltd.
InventorsChuanjun LIU, An YAN
Life of this patent
Estimating the term…
Abstract
An electric energy storage device comprises four energy units with a same rated voltage and a socket. The four energy units are divided into two energy modules, each energy module is provided with two energy units, and each energy module is provided with a positive electrode and a negative electrode. The socket including four voltage output terminals respectively connected to the positive and negative electrodes of the two energy modules, and the socket is also provided with two control parts which respectively control the two energy units in the two corresponding energy modules to switch between parallel state and series state.
Claims5
An electric energy storage device, comprising:
- four energy units with a same rated voltage, wherein the four energy units are divided into two energy modules, each energy module is provided with two energy units, and each energy module is provided with a positive electrode and a negative electrode, and
- a socket including four voltage output terminals respectively connected to the positive and negative electrodes of the two energy modules, and the socket is also provided with two control parts which respectively control the two energy units in the two corresponding energy modules to switch between parallel state and series state;
- wherein
- the control part is provided with two parallel switches and one series switch, the parallel switches connect the two energy units in the corresponding energy module in parallel, and the series switch connects the two energy units in the corresponding energy module in series, and
- in an initial state, one kind of the parallel switches and the series switch is conductive, and the other kind is disconnected.
Dependencies are inferred from the claim text.