Checking circuit for energy storage device terminal voltage

An energy storage circuit and device end technology, which is applied in the field of inspection circuits for the terminal voltage of energy storage devices, can solve the problems of long switching action time, complex production process, cumbersome calibration process, etc., and achieves fast channel switching speed, increased service life, Simple effect of peripheral circuit
CN103134979AInactive Publication Date: 2013-06-05TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2013-06-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a checking circuit for energy storage device terminal voltage. The checking circuit for the energy storage device terminal voltage comprises a partial pressure resistance network, an analogue switch, a differential amplifier, an analog to digital (A / D) converter and a microcontroller. The partial pressure resistance network is connected with nodes of an energy circuit which is composed of energy storage pieces connected in series and decreasing voltage of the nodes in equal proportion through a partial pressure resistance mode. The analogue switch is connected with an output terminal of the partial pressure resistance network and used for switching collection channels. The differential amplifier is connected with the analogue switch and amplifies voltage difference between the two nodes by inputting the voltage of the two nodes through the analogue switch. The A / D converter is connected with an output terminal of the differential amplifier, conducts AD sampling to output signals of the differential amplifier and conducts analog-to-digital conversion. The microcontroller is connected with an output terminal of the A / D converter and obtains terminal voltage of a corresponding node due to the fact that output signals the A / D converter multiplied by a coefficient. Compared with the prior art, the checking circuit for the energy storage device terminal voltage has the advantages of simple in circuit structure, quick in checking and the like.
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Description

technical field

[0001] The invention relates to a patrol circuit, in particular to a patrol circuit for the terminal voltage of an energy storage device. Background technique

[0002] At present, the inspection methods for the monomer terminal voltage of energy storage devices can be roughly divided into two categories: the method of resistive voltage division and the method of direct measurement using switching devices.

[0003] For the method of resistive voltage division, according to different test methods, it is mainly divided into common-mode measurement and differential-mode measurement. At present, most of the terminal voltage inspection circuits use the traditional common-mode measurement circuit, that is, divide the voltage of each node connected in series with the energy storage device to the acceptable voltage range of the A / D converter through a voltage-dividing resistor. By measuring the voltage of each node and subtracting it, the terminal voltage of each ene...

Claims

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