Electric energy storage device and electric tool system
US12237527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2021 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Sep 21, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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 comprising with two energy units. Each energy module is provided with a positive electrode and a negative electrode. The socket includes four voltage output terminals connected to the positive and negative electrodes of the two energy modules and is 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. An electric tool system is also provided, comprising a plug that is connected to the socket, and different plugs can connect the four energy units in different connection states. The electric energy storage device with multiple output voltages can be matched with various electric tools with different rated voltages, and reduces the cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.