Battery pack and electric tool system
A technology of electric tools and battery packs, which is applied in the direction of batteries, small-sized batteries/battery packs, manufacturing tools, etc., can solve cumbersome problems, achieve the effects of improving compatibility, reducing use costs, and increasing the scope of application
Pending Publication Date: 2019-02-01
CHANGZHOU GLOBE CO LTD
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Problems solved by technology
[0004] For users, when using multiple electric tools or electric machines, it is cumbersome to prepare multiple battery packs to meet different voltage requirements. Therefore, it is desirable to provide a battery pack that can output different voltages by switching , improve the convenience of use
Method used
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[0055] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0056] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present invention are shown in the drawings, and the steps related to the present invention are omitted. Invent other details that don't really matter.
[0057] Additionally, it should be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also Other elements not expressly listed, or inherent to the process, method, article, or apparatus are also included.
[00...
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The invention provides a battery pack, which comprises two groups of battery cells and four electrode terminals which are respectively and correspondingly electrically connected with anodes and cathodes of the two groups of battery cells, wherein the four electrode terminals comprise two variable terminals arranged in the middle and two fixing terminals arranged on the outer side; and the two variable terminals have different mechanical connection states, so as to enable the two groups of battery cells to be connected in series or in parallel for the battery pack to output two different voltages. The invention further provides an electric tool system, which comprises an electric tool and the battery pack, wherein a male plug-in of the electric tool and the battery pack are inserted and matched to switch the mechanical connection states of the variable terminals, so as to enable the battery pack to output different output voltages to the electric tool. Through the above arrangement, the application range of the electric tool system is increased, the compatibility of products is improved, and the development cost is reduced.
Description
technical field [0001] The invention relates to a battery pack capable of outputting two voltages and an electric tool system. Background technique [0002] Electric machines such as electric tools are increasingly driven by rechargeable battery packs such as lithium-ion batteries, and the wirelessization of electric machines has become an important development trend. In a motor-driven electric tool, a battery pack composed of a plurality of battery cells is generally used, and the motor is driven by electric energy stored in the battery pack. After use, the voltage drops, the battery pack can be removed from the electric tool, and an external charging device can be used to charge the battery pack. [0003] In a cordless electric tool or an electric machine, a rechargeable battery is required to ensure a predetermined operating time or a predetermined output, and therefore, the performance of the battery must also satisfy high output or high voltage. In addition, with the ...
Claims
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IPC IPC(8): H01M2/20H01M50/204H01M50/247H01M50/269H01M50/296H01M50/50H01M50/503H01M50/51H01M50/512
CPCH01M50/51H01M50/247H01M50/296H01M50/269H01M50/512H01M50/503H01M50/204H01M50/298H01M2220/10H01R29/00Y02E60/10Y02P70/50H01M50/50H02J1/082B25F5/00H01M10/0445H01M2220/30H02J1/00
Inventor 刘传君郭新忠严安
Owner CHANGZHOU GLOBE CO LTD