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Activation circuit and activation method thereof, battery protection circuit, battery

A technology for protecting circuits and activating circuits, which is applied in the repair/maintenance of secondary batteries, charging/discharging of secondary batteries, circuits, etc. It can solve the problems of long activation time, need, and high withstand voltage requirements of battery protection circuits, and achieve activation costs Low, short activation time effect

Active Publication Date: 2021-02-26
HYTERA COMM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this method, special activation equipment is required, the activation time is long, the activation voltage is high, the activation effect is uncertain, the battery protection circuit has high withstand voltage requirements, and the activation cost is high.

Method used

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  • Activation circuit and activation method thereof, battery protection circuit, battery
  • Activation circuit and activation method thereof, battery protection circuit, battery
  • Activation circuit and activation method thereof, battery protection circuit, battery

Examples

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions of each exemplary embodiment provided by the present invention with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0021] figure 1 It is a block diagram of an activation circuit applied to a battery protection circuit according to an embodiment of the present invention. Such as figure 1 As shown, the battery protection circuit includes a battery management chip 11 and a charging switch tube 12 . The battery management chip 11 is connected to the charging switch tube 12 and is used to control the charging switch tube 12 to charge the battery cell 14 . The working voltage of the battery management chip 11 is provided by the batteries 14 it protects.

[0022] The activation circuit 13 includes a capacitor 131 and a ...

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Abstract

The invention discloses an activation circuit applied to a battery protection circuit, an activation method thereof, a battery protection circuit and a battery. The battery protection circuit includes a battery management chip and a charging switch tube. The battery management chip controls the charging switch tube to charge the battery cell. The working voltage of the battery management chip is provided by the battery cell it protects. The activation circuit includes: a capacitor and a capacitor The charging circuit, the two ends of the capacitor are respectively connected to the gate and source of the charging switch tube, the capacitor charging circuit is used to charge the capacitor when the battery is over-discharged so that the battery management chip cannot control the charging switch tube to charge the battery, so that Provide a forward bias voltage to the charging switch tube to turn on the charging switch tube, so that the external power supply can directly charge the battery cell through the charging interface and the charging switch tube to activate the battery management chip. Through the above method, the present invention can realize the activation of the battery protection circuit in a relatively simple manner, the activation time is short and the activation cost is low.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of batteries, and in particular to an activation circuit applied to a battery protection circuit and an activation method thereof, a battery protection circuit, and a battery. Background technique [0002] In order to ensure the safety of use, a set of dedicated battery protection circuits are designed inside the existing independently packaged lithium-ion battery packs. The battery protection circuit includes at least a battery management chip, wherein the battery management chip is used to control the charging and discharging operations of the battery cells, and the working voltage of the battery management chip is provided by the battery cells it protects. [0003] In practical applications, when the remaining voltage of the battery cell is lower than the minimum operating voltage of the power management chip due to over-discharge, the power management chip will no longer work no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/44
CPCH01M10/4257H01M10/446H01M2010/4271Y02E60/10
Inventor 潘启辉卢良飞郎华敏
Owner HYTERA COMM CORP
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