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Method and device for detecting state of overcurrent protector of battery

The technology of a state detection device and an overcurrent protector is applied in the electrical field, which can solve the problems of misjudgment and low reliability, and achieve the effect of reducing the detection cost.

Active Publication Date: 2013-02-27
ZTE CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method and device for detecting the state of a battery overcurrent protector to solve the problem of low reliability or misjudgment when judging the state of an overcurrent protector in the prior art

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  • Method and device for detecting state of overcurrent protector of battery
  • Method and device for detecting state of overcurrent protector of battery
  • Method and device for detecting state of overcurrent protector of battery

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Embodiment Construction

[0036] In order to solve the problem of low reliability or misjudgment in the prior art when judging the state of the overcurrent protector, the present invention provides a method and device for detecting the state of the battery overcurrent protector. The invention is described in further detail. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] Such as Figure 4 , 5 As shown, the present invention relates to a method for detecting the state of a battery overcurrent protector, comprising the following steps:

[0038] Step S101, obtaining the voltage U of the power supplyout , and the voltage U of the battery connected to the power supply through the overcurrent protector bat , and calculate the difference U between the power supply voltage and the battery voltage, namely: U=|U out -U bat |;

[0039] Step S102, firstly, the minimum value U of the difference be...

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Abstract

The disclosure discloses a method and device for detecting a state of an overcurrent protector for a battery, wherein a voltage U out of a power supply and a voltage U bat of a battery connected to the power supply via an overcurrent protector is acquired, and U =| U out -U bat | is calculated; when U L ‰¤U‰¤U H and | I bat |‰¤ I min , the voltage of the power supply is adjusted to be U' out , wherein U L and U H are the minimum value and maximum value of a difference between the voltage of the power supply and the voltage of the battery, respectively, I bat is a current of the battery, and I min is a current detecting precision for detecting a current equipment of the battery; the voltage of the battery U' bat after adjusting the voltage of the power supply is acquired, and U' =| U' out - U' bat | is calculated; and a state of the overcurrent protector for the battery is determined. With the disclosure, in the case that the difference between the voltage of the battery and the supply voltage is small, by regulating the supply voltage and comparing the voltage difference across the overcurrent protector again, accurate detection of the state of the overcurrent protector for the battery as well as reduction of detecting costs is enabled.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a method and device for detecting the state of a battery overcurrent protector. Background technique [0002] In the general load power supply system, the battery is used as the backup power supply of the system, which realizes that the load continues to work normally when the main power supply source is powered off, and ensures the stable and reliable operation of the system. The over-current protection of the battery is realized by connecting an over-current protector in series with the input port of the battery. When the battery is overcharged or discharged or the temperature is too high, the overcurrent protector can automatically disconnect to protect the load equipment and the battery. The state of the overcurrent protector of the battery is very important. On the one hand, it indicates the charging and discharging of the battery, and at the same time reflects whether ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/165
CPCH02J7/34H02J2007/0039G01R31/3277H02J7/0029H02J1/10G01R31/2827H02J7/0031H02J7/00304
Inventor 李林刘明明孟燕妮滕凌巧周保航韦树旺
Owner ZTE CORP
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