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SPWM adaptive frequency conversion point based storage battery impedance measuring method

An impedance measurement and battery technology, applied in the measurement of resistance/reactance/impedance, measurement of electricity, measurement devices, etc., can solve the problems of insecurity, measurement methods, high power consumption, low accuracy, etc., to achieve strong adaptive ability, good Practical value, good repeatability

Inactive Publication Date: 2018-06-29
NANJING DELTO TECH
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Problems solved by technology

[0004] At present, most battery testing or testing tools on the market can only detect the voltage and current of the battery; some products that can detect the internal resistance of the battery obtain the internal resistance of the battery through high-current discharge, which is a waste of energy and unsafe There is also a method of measuring the internal impedance of the battery by the AC method, but the current technology has not been able to overcome various interferences when the external charger is working, and the measurement method has a large power consumption, low accuracy, and poor repeatability

Method used

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  • SPWM adaptive frequency conversion point based storage battery impedance measuring method
  • SPWM adaptive frequency conversion point based storage battery impedance measuring method
  • SPWM adaptive frequency conversion point based storage battery impedance measuring method

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Embodiment Construction

[0025] The present invention can be better understood from the following examples. However, those skilled in the art can easily understand that the content described in the embodiments is only for illustrating the present invention, and should not and will not limit the present invention described in the claims.

[0026] Such as figure 1 As shown, the present invention is based on the accumulator impedance measurement method of SPWM adaptive frequency conversion point, specifically comprises the following steps:

[0027] Step 1, build the battery internal resistance measurement circuit: including the main measurement circuit, the main measurement circuit includes the excitation drive circuit, the calibration resistor Rs and the battery to be tested, the calibration resistor Rs is connected in series on the loop formed by the excitation drive circuit and the battery to be tested; the excitation drive The circuit feeds the excitation current to the storage battery to be tested ...

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Abstract

The invention discloses an SPWM adaptive frequency conversion point based storage battery impedance measuring method. According to the measuring method, a measuring result is not influenced no mattera charger works or not, the problem that a measuring loop is interfered by the charger or load equipment can be solved effectively, the method also has advantages that a measuring result is high in precision and repeatability, and the method has high practical values.

Description

technical field [0001] The invention relates to a storage battery impedance measurement method, in particular to a storage battery impedance measurement method based on SPWM adaptive frequency conversion point. Background technique [0002] As the most commonly used energy storage element, batteries are widely used in industries such as electric power, communications, aerospace, and finance. As backup power sources for many occasions such as government departments, public facilities, large-scale processing enterprises, and various data centers, it is necessary to ensure The importance of providing the required power to electrical equipment is self-evident. Normally, the battery is in the standby state of floating charge, and the AC mains is converted into DC by the rectifier to supply power to the load. In the case of AC power failure or other accidents, the battery is the only energy supplier for the load. Once there is a problem, the power supply system will face paralysis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36G01R27/02
CPCG01R27/02G01R31/389
Inventor 童国道沈启鹏朱丽平
Owner NANJING DELTO TECH
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