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A lead storage battery internal resistance detection circuit

A detection circuit, lead-acid battery technology, applied in the direction of measuring resistance/reactance/impedance, measuring device, measuring electrical variables, etc., to achieve the effect of strengthening filtering ability, reducing the interference of ripple current and harmonic current, and high measurement accuracy

Active Publication Date: 2017-12-26
SHENZHEN XBROTHER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a lead-acid battery internal resistance detection circuit, which aims to solve the problem that the prior art cannot detect the internal resistance of the battery without damage to the battery, and can effectively eliminate interference and test Defects in the true internal resistance of the battery

Method used

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  • A lead storage battery internal resistance detection circuit
  • A lead storage battery internal resistance detection circuit
  • A lead storage battery internal resistance detection circuit

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Embodiment Construction

[0032] The present invention provides a detection circuit for the internal resistance of a lead-acid storage battery. In order to make the object, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] See figure 1 , figure 1 It is a structural block diagram of a preferred embodiment of the lead storage battery internal resistance detection circuit of the present invention. like figure 1 As shown, the internal resistance detection circuit of the lead storage battery includes a discharge module 10 , a voltage drop acquisition module 20 , a load voltage detection module 30 and a processing calculation module 40 .

[0034] The discharging module 10 is used for discharging the battery (ie, the lead storage battery), so as to generate ...

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Abstract

The invention discloses an internal resistance detection circuit of a lead storage battery. The circuit comprises a discharging module used for discharging for a battery and making anode and cathode of the battery have voltage drop, a voltage drop acquisition module used to acquire the voltage drop on the anode and cathode of the battery, and a load voltage detection module used to detect voltage values on a load, and a processing calculation module. The processing calculation module calculates average current of battery internal resistance according to the voltage value on the load, and then calculates battery internal resistance according to the voltage drop on the anode and cathode of the battery and the average current of the battery internal resistance, and external excitation is not needed, and measuring precision is improved and the battery is not damaged.

Description

technical field [0001] The invention relates to the technical field of lead storage batteries, in particular to a detection circuit for internal resistance of lead storage batteries. Background technique [0002] Battery internal resistance is an important indicator to measure battery performance. The internal resistance of the battery is very small, usually in the order of milliohms or microohms, which cannot be measured by general resistance measurement methods. It is an urgent need for the current storage battery application field to find a measurement method that does not damage the battery and can effectively eliminate interference and test the real internal resistance of the battery. There are two most prominent technologies for the existing detection of batteries, as follows: [0003] The first is the DC discharge internal resistance measurement method, which has the advantage of high measurement accuracy, which can reach 0.1% if it is properly controlled. But its ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/08
Inventor 王世林覃朗廖观亮
Owner SHENZHEN XBROTHER TECH
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