Battery pack and combination of battery pack and electric device

Abstract

The invention relates to a battery pack for discharging to supply electricity to a cordless electric device by connecting with the cordless electric device. The battery pack can supply two or more than two voltages or capacities to the cordless electric device and is provided with a first connection terminal group correspondingly eclectically connected with the battery pack; the first connection terminal group is provided with a transfer switch; and two or more than two groups of battery banks are connected in series or in parallel to output two or more than two voltages or capacities through the transfer switch. Compared with the prior art, the invention has the advantage of preventing an electronic element from unnecessarily consuming the electricity of the battery pack under the condition of not increasing the electronic element; besides, the invention can be used for supplying the electricity to electric devices with different voltages,so that the battery pack can be used for the electric devices with different rated voltages; in addition, the invention has high generality and obviously reduces the manufacturing cost of a product.

Description

technical field [0001] The invention relates to a battery pack, especially a battery pack that can provide multiple voltages or capacities. [0002] The present invention also relates to a combination of a battery pack and an electrical device, in particular to a battery pack that can provide two or more voltages or capacities and an electrical device that cooperates with the battery pack. Background technique [0003] In recent years, with the development of battery material technology, the capacity of batteries has been greatly improved, and its application range has also extended from some low-power electronic electrical devices to some high-power power electrical devices, such as electric tools Wait. In this way, the electric tool using the high-rate battery can be freed from the shackles of cables and can be used anytime and anywhere. In order to improve the utilization rate, these batteries usually use rechargeable battery packs, such as nickel pot (Nickel-cadmium, N...

AI Technical Summary

Problems solved by technology

[0004] Ordinary battery packs on the market connect all the batteries in the battery pack through wiring, and lead out two connection terminals to output a voltage or capacitance. It can only supply power to electrical devices with the same voltage or load as the battery pack, and its voltage or capacity cannot. Changes, the limitations are very large, other high-power or low-power electrical devices cannot be used, so it brings a lot of inconvenience to users

[0005] In addition, it is common in the market to install electronic components on battery packs or electrical devices, and to adjust the voltage of the battery pack through electronic components, so that the capacity of the battery pack must be partially lost in the electronic components, and it is not maximized. Battery packs, and due to the addition of electronic components and other devices, the cost of battery packs or electrical devices is greatly increased

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