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Electric tool and combination of electric tool and battery pack

A technology for power tools and battery packs, applied in battery pack parts, manufacturing tools, secondary batteries, etc., can solve the problem of high design requirements and high manufacturing costs, and achieve the effect of simplifying requirements and reducing costs

Active Publication Date: 2010-06-30
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this battery pack can solve the above design problems, its own design requirements and design and manufacturing costs are very high

Method used

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  • Electric tool and combination of electric tool and battery pack
  • Electric tool and combination of electric tool and battery pack
  • Electric tool and combination of electric tool and battery pack

Examples

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Embodiment Construction

[0049] The purpose of the present invention is to disclose a new protection method for overcharging and overdischarging of battery packs, which can avoid overdischarging of battery packs through the cooperation of cordless electrical devices and battery packs, or prevent battery overdischarge through the cooperation of charging devices and battery packs. overcharging of the package, the following combines with a Li-ion battery and a cordless power tool as an example Figure 1 to Figure 5 The specific implementation mode will be described. It should be noted that the lithium-ion battery mentioned here is a general term for rechargeable batteries whose negative electrode material is lithium element. According to different positive electrode materials, it can form many systems, such as "lithium manganese" battery, "lithium iron" battery, etc.

[0050] figure 1 It is a block diagram of the working circuit after the battery pack 10 is plugged into the electric tool 20, figure 2 ...

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PUM

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Abstract

The invention relates to a combination of an electric tool and a battery pack, wherein the battery pack comprises a plurality of batteries, a circuit board and an electronic control assembly; the circuit board is connected with the batteries; the electronic control assembly is arranged on the circuit board; the electric tool also comprises a circuit board and an electronic control assembly; and the electronic control assembly is arranged on the circuit board. The electronic control assemblies in the battery pack and the electric tool can be respectively used for monitoring the states of the battery pack and performing protection control on the battery pack. With the design, the integral design requirements of the battery pack and the electric tool can be greatly simplified, and the design cost is correspondingly reduced.

Description

technical field [0001] The invention relates to an electric tool, in particular to an electric tool powered by a battery pack. [0002] The invention also relates to a combination of an electric tool and a 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 adopt rechargeable batteries, such as nickel-cadmium (Nickel-cadmium, NiCd) batteries, nickel-metal hydride (Nickel-Metal Hydride, NiMH) batteries, lithium-ion (Lithium-ion, L-ion) battery etc. [0004] The above-mentioned type of battery i...

Claims

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Application Information

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IPC IPC(8): B25F5/00H01M10/48H01M2/20H01M2/34H01M50/503H01M50/581
CPCY02E60/12Y02E60/10B25F5/02
Inventor 徐刚
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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