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Battery packs for electric tools

A technology for electric tools and battery packs, which is applied to battery pack parts, batteries, secondary batteries, etc., can solve problems such as heat generation, achieve the effect of suppressing position deviation and maintaining relative reliability

Inactive Publication Date: 2015-07-15
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the one hand, such battery packs for electric tools tend to generate heat during charging and discharging due to the characteristics of their secondary batteries.

Method used

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  • Battery packs for electric tools
  • Battery packs for electric tools
  • Battery packs for electric tools

Examples

Experimental program
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Embodiment Construction

[0031] Hereinafter, embodiments of a battery pack for an electric tool for carrying out the present invention will be described with reference to the drawings. figure 1 The reference numeral 10 shown is an impact screwdriver corresponding to the power tool of the present invention. The impact screwdriver 10 can be driven by attaching a battery pack 20 to the tool body 11 . The battery pack 20 corresponds to the battery pack for an electric tool according to the present invention, and can be attached to and detached from the tool body 11 of the impact screwdriver 10 as a power source of the impact screwdriver 10 . In other words, the battery pack 20 can be detached from the tool main body 11 and attached to a dedicated charger for charging when the power becomes low. In addition, the battery pack 20 charged by the dedicated charger is reattached to the tool body 11 as a power source of an electric tool such as the impact screwdriver 10 . In addition, the tool main body 11 inc...

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PUM

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Abstract

A battery pack includes a case, a battery device, an intervening member and a temperature detection device. The battery device may be disposed within the case and include a cell holder configured to accommodate a plurality of battery cells. The intervening member may be provided between the cell holder and at least one of the plurality of cell holder. The temperature detection device may be disposed between the intervening member and at least one of the plurality of cell holder, so that the temperature detection device directly contacts at least one of the battery cells for detecting a temperature thereof. At least one of the cell holder and the intervening member may have an elasticity, so that the temperature detection device may be directly pressed against at least one of the battery cells due to an elastic deformation of the least one of the cell holder and the intervening member.

Description

technical field [0001] The present invention relates to a battery pack for an electric tool that can be attached to and detached from a tool body of the electric tool as a power source of the electric tool. Background technique [0002] In recent electric tools, a battery pack for electric tools that is detachable from the tool main body is used as a power source. Such a battery pack for an electric tool generally includes a case as an external device and a battery main body arranged in the case. The battery main body includes a plurality of battery cells that can be charged and discharged, and a circuit board that controls charging and discharging of the plurality of battery cells. Such a battery pack for an electric tool is detached from the tool body when the power becomes low, charged by a dedicated charger, and reattached to the tool body after charging. [0003] On the one hand, such a battery pack for an electric tool tends to generate heat during charging and disch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M10/48H01M50/213H01M50/247H01M50/291
CPCH01M2/1055H01M2220/30H01M10/482H01M10/486H01M10/48H01M50/291H01M50/247H01M50/213H01M2200/10Y02E60/10
Inventor 内藤晃
Owner MAKITA CORP
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