Electric energy storage device and electric tool system
AssigneeGlobe (Jiangsu) Co., Ltd.
InventorsChuanjun Liu, Xinzhong Guo, An Yan
Life of this patent
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Abstract
An electric energy storage device, comprising N energy units with a same rated voltage and provided with a socket, wherein the N energy units are equally divided into M energy modules. Each energy module comprises K energy units, wherein M≥2 and K≥2, and can be switched between parallel and series connection states. The disclosure also provides an electric tool system, wherein the electric tools with different rated voltages have different plugs, and the electric energy storage device outputs different voltages after connecting with the socket. The electric energy storage device with multiple output voltages can be suitable for electric energy storage devices with different rated voltages, and reduces the cost.
Claims19
An electric energy storage device, comprising N energy units with a same rated voltage, wherein the N energy units are equally divided into M energy modules, and each energy module includes K energy units, wherein M≥2 and K≥2, the K energy units in each energy module is capable of being switched to connect to each other in series or in parallel;
- and a socket;
- wherein, the rated voltage of each energy unit is nV, the N energy units of the electric energy storage device have four connection states:
- wherein, K energy units in the energy module are connected in parallel, and M energy modules are connected in parallel, and an output voltage of the electric energy storage device is nV, or K energy units in the energy module are connected in series, and M energy modules are connected in series and the output voltage is N*nV, or K energy units in the energy module are connected in series, and the M energy modules are connected in parallel and the output voltage is K*nV, or K energy units in the energy module are connected in parallel, and M energy modules are connected in series and the output voltage is M*nV,
- which means these four connection states provide at least three output voltages.
An electric tool system, comprising an electric tool and an electrical energy storage device, wherein
- the electrical energy storage device comprises N energy units with a same rated voltage, the N energy units are equally divided into M energy modules, and each of the energy modules includes K energy units, wherein M≥2 and K≥2;
- the K energy units in each energy module is capable of being switched to connect to each other in series or in parallel;
- the electrical energy storage device further comprises a socket;
- and
- the electric tool is provided with a plug that matches with the socket;
- wherein, the rated voltage of each energy unit is nV, the N energy units of the electric energy storage device have four connection states:
- wherein, K energy units in the energy module are connected in parallel, and M energy modules are connected in parallel, and an output voltage of the electric energy storage device is nV, or K energy units in the energy module are connected in series, and M energy modules are connected in series and the output voltage is N*nV, or K energy units in the energy module are connected in series, and the M energy modules are connected in parallel and the output voltage is K*nV, or K energy units in the energy module are connected in parallel, and M energy modules are connected in series and the output voltage is M*nV,
- which means these four connection states provide at least three output voltages.
An electric tool system, comprising a low—voltage electric tool, a medium—voltage electric tool and a high—voltage electric tool, wherein:
- the electric tool system comprises an electric energy storage device having
- N energy units with a same rated voltage, wherein the N energy units are equally divided into M energy modules, and each energy module includes K energy units, Wherein M≥2 and K≥2, the K energy units in each energy module is capable of being switched to connect to each other in series or in parallel;
- and a socket;
- wherein, the rated voltage of each energy unit is nV, the N energy units of the electric energy storage device have four connection states:
- wherein, K energy units in the energy module are connected in parallel, and M energy modules are connected in parallel, and an output voltage of the electric energy storage device is nV, or K energy units in the energy module are connected in series, and M energy modules are connected in series and the output voltage is N*nV, or K energy units in the energy module are connected in series, and the M energy modules are connected in parallel and the output voltage is K*nV, or K energy units in the energy module are connected in parallel, and M energy modules are connected in series and the output voltage is M*nV, which means these four connection states provide at least three output voltages;
- the low—voltage electric tool is provided with a low—voltage plug which is connected with the socket and makes the N energy units in a full parallel connection state,
- the medium—voltage electric tool is provided with a medium—voltage plug which is connected to the socket and makes the N energy units in a medium—voltage state,
- the high—voltage electric tool is provided with a high—voltage plug which is connected to the socket and makes the N energy units in a full series connection state.
Dependencies are inferred from the claim text.