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Protection circuit and battery management system with same

A technology for protecting circuits and batteries, applied in safety/protection circuits, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc. , Reduce the service life of electronic components and other issues

Pending Publication Date: 2021-05-14
ZHONGTIAN ENERGY STORAGE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the TVS tube cannot withstand continuous pulse voltage. When the ratio of the duration of the pulse voltage to the intermittent time is 0.01%, it may damage the TVS tube, and then destroy the electronic components connected to it.
However, in practical applications, it is difficult to select the appropriate resistance value of the varistor. When the selection is improper, it will not only fail to protect the pulse voltage, but will easily reduce the service life of electronic components due to high-voltage shocks.

Method used

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  • Protection circuit and battery management system with same
  • Protection circuit and battery management system with same
  • Protection circuit and battery management system with same

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Embodiment Construction

[0048] It should be noted that when an element is referred to as being "electrically connected" to another element, it may be directly on the other element or there may be an intervening element. When an element is considered to be "electrically connected" to another element, it may be connected by contact, eg, by a wire connection, or non-contact, eg, by a non-contact coupling.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

[0050] see figure 1 A preferred embodiment of the present invention provides a protection circuit 100, one end of the protection circuit 100 is electrically connected to the power module 200, and the other end is electrically connect...

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Abstract

The invention provides a protection circuit and a battery management system with the same. One end of the protection circuit is electrically connected to a power supply module, the other end of the protection circuit is electrically connected to a battery, and the protection circuit at least comprises a primary filtering unit, a first voltage dividing unit and a secondary filtering unit which are electrically connected in sequence. The protection circuit provided by the invention is better in surge impact prevention effect and higher in stability, and meets protection requirements.

Description

technical field [0001] The invention relates to a protection circuit and a battery management system with the protection circuit. Background technique [0002] In the prior art, a transient voltage suppressor (Transient Voltage Suppressor, TVS) or a piezoresistor is usually used to absorb the pulse voltage. However, the TVS tube cannot withstand continuous pulse voltage. When the ratio of the duration of the pulse voltage to the intermittent time is 0.01%, the TVS tube may be damaged, and then the electronic components connected to it may be damaged. In practical applications, it is difficult to select a suitable resistance value for varistors. If the selection is improper, not only will it not be able to protect against pulse voltage, but it will easily reduce the service life of electronic components due to high-voltage shocks. Contents of the invention [0003] In view of this, the present invention provides a protection circuit for reducing the impact of pulse voltage...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02H7/18H02H9/00H02H9/02H02H9/04
CPCH02J7/0029H02J7/00308H02J7/00304H02H7/18H02H9/005H02H9/04H02H9/045H02H9/02
Inventor 黄艳阳郑媛媛靳承铀缪永华薛驰
Owner ZHONGTIAN ENERGY STORAGE TECH
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