CN202453423U - Scanning test device for impedance spectra of portable battery - Google Patents
Scanning test device for impedance spectra of portable battery Download PDFInfo
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- CN202453423U CN202453423U CN2011204958628U CN201120495862U CN202453423U CN 202453423 U CN202453423 U CN 202453423U CN 2011204958628 U CN2011204958628 U CN 2011204958628U CN 201120495862 U CN201120495862 U CN 201120495862U CN 202453423 U CN202453423 U CN 202453423U
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Abstract
The utility model relates to a scanning test device for impedance spectra of a portable battery. The scanning test device comprises a constant current source H, a phase-locked loop circuit S, an operational amplifier P, an analog/digital (AD) conversion circuit, a control singlechip, a colored display screen and a measured battery B, wherein the measured battery is connected to a circuit by a special four-wire clamp; the singlechip controls the constant current source to output pulse excitation current with the frequency of 0.1 to 1,000 Hz, and the increment of regulating the frequency each time is 0.1 Hz; when the excitation current passes through the measured battery B, voltage response is generated at two ends of the measured battery B, and the voltage response of the battery is subjected to phase-locked amplification by the phase-locked loop circuit S to obtain a voltage value of battery impedance; the voltage value is transmitted to the AD conversion circuit by the precision operational amplifier P, and AD conversion results are read by the singlechip and stored in a storage; and after the frequency is scanned to 1,000 Hz, the singlechip stops the output of the constant current source H, the scanning is finished, and the impedance spectra of the battery are displayed on the colored display screen.
Description
Technical field
The utility model relates to portable battery impedance spectrum scanning tester, belongs to the battery detecting field.
Background technology
Electrochemical impedance spectroscopy is that a kind of sinusoidal wave current potential with little amplitude is the electrochemical measuring method of disturbing signal; Since with the electric signal of little amplitude to the system disturbance; Can avoid on the one hand system is produced big influence; Make also that on the other hand the response of disturbance and system is approximate linear; Make the mathematics manipulation of measurement result become simultaneously simple, this method is a kind of measuring method that adopts frequency characteristic, and it studies electrode system with the very wide impedance spectrum of frequency range that measures; Thereby the structural information that can obtain more dynamic information and electrode interface than other conventional methods therefore, adopted the electrochemical impedance spectrometry that the consistance of this closed system of battery is tested.
The electrochemical impedance spectroscopy that battery comes out through the electrochemical workstation measurement is that the frequency response function value under a series of different angular frequencies is carried out electrochemical impedance spectroscopy; The purpose of measuring is exactly to set up reasonable equivalent circuit through the shape and the characteristics of curve; Confirm the parameter of the relevant elements in the equivalent electrical circuit; Thereby draw the physical parameter of the kinetic parameter or the articulated system of relevant process, what corresponding parameter was corresponding is exactly the characteristic of inside battery structure, is through the surface of battery battery to be tested with respect to additive method; This has embodied the essence that battery is more pressed close in the impedance spectrum analysis, also can predict the serviceable life of battery after application better.
Yet; The electrochemical workstation complicated operation; Be not easy to be accepted by common operating personnel, the utility model proposes a kind of portable testing tool that can intuitively show battery impedance spectroscopy, can carry out frequency sweeping to battery easily; And battery impedance spectroscopy is presented on the colorful display screen, supply battery research and classification reference.
Summary of the invention
The utility model is intended to invent portable battery impedance spectrum scanning tester, can scan battery impedance spectroscopy, and it is presented on the chromatic liquid crystal screen.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
Portable battery impedance spectrum scanning tester comprises constant current source H, phase-locked loop circuit S, operational amplifier P, AD conversion, control single chip computer, colorful display screen, tested battery B; See accompanying drawing 1.
With reference to the accompanying drawings 1, the utility model course of work is described:
Tested battery is connected on the constant current source H through special-purpose four wire holder, and control single chip computer connects constant current source H, AD conversion and colorful display screen, and its control constant current source H output is from the pulse excitation electric current of 0.1Hz ~ 1000Hz frequency; The increment of each regulating frequency is 0.1Hz, and exciting current produces voltage responsive during through tested battery B at tested battery B two ends; After through phase-locked loop circuit S the voltage responsive of battery being advanced horizontal lock and amplified; Obtain the magnitude of voltage of battery impedance, through being transferred to the AD conversion behind the precision operational-amplifier P, control single chip computer reads AD transformation result and storage then; Frequency sweeping is behind 1000Hz; Control single chip computer stops constant current source output, finishes scanning, on colorful display screen, shows the impedance spectrum of battery.
The process flow diagram of scanning sequence is seen accompanying drawing 2.
Description of drawings:
Accompanying drawing 1 is the principle schematic of the utility model;
Accompanying drawing 2 is impedance spectrum scanning sequence process flow diagrams;
Accompanying drawing 3 is battery impedance spectral curves of actual measurement.
Embodiment:
For the technical scheme that makes the utility model is clearer, below in conjunction with accompanying drawing and embodiment, to the utility model further explain, instantiation described herein only in order to explain the utility model, is not limited to the utility model.
Embodiment:
Tested battery B is connected to constant current source H output terminal through special-purpose four wire holder, and control single chip computer control constant current source H output is from the pulse excitation electric current of 0.1Hz ~ 1000Hz frequency, and the increment of each regulating frequency is 0.1Hz; Exciting current is during through tested battery B; Produce voltage responsive at tested battery B two ends, after through phase-locked loop circuit S the voltage responsive of battery being advanced horizontal lock and amplified, obtain the magnitude of voltage of battery impedance; This voltage is transferred to A/D convertor circuit through precision operational-amplifier P again; Control single chip computer reads AD transformation result and storage, when frequency sweeping behind 1000Hz, control single chip computer is forbidden constant current source output; Finish scanning, on colorful display screen, show the impedance spectrum of battery.
Claims (1)
1. portable battery impedance spectrum scanning tester comprises constant current source H, phase-locked loop circuit S, operational amplifier P, AD conversion, control single chip computer, colorful display screen, tested battery B; It is characterized in that: tested battery B is connected to constant current source H through special-purpose four wire holder; Control single chip computer connects constant current source H, AD conversion and colorful display screen; The voltage responsive that the exciting current of constant current source H output produces at tested battery B two ends; After phase-locked loop circuit S amplification, be transferred to the AD conversion through precision operational-amplifier P again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204958628U CN202453423U (en) | 2011-12-03 | 2011-12-03 | Scanning test device for impedance spectra of portable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204958628U CN202453423U (en) | 2011-12-03 | 2011-12-03 | Scanning test device for impedance spectra of portable battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453423U true CN202453423U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204958628U Expired - Fee Related CN202453423U (en) | 2011-12-03 | 2011-12-03 | Scanning test device for impedance spectra of portable battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN202453423U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116079A (en) * | 2013-01-25 | 2013-05-22 | 四川大学 | Impedance spectrum tester and impedance spectrum testing method |
| CN105203967A (en) * | 2015-10-19 | 2015-12-30 | 深圳市森派新能源科技有限公司 | Power battery deterioration degree test method and test device |
| CN107656215A (en) * | 2017-11-10 | 2018-02-02 | 华北电力大学 | A kind of battery functi on method for diagnosing status based on constant current mode impedance spectrum |
| CN109490399A (en) * | 2018-10-18 | 2019-03-19 | 京东方科技集团股份有限公司 | Electrochemistry detecting apparatus and electrochemical detection method |
| CN110837057A (en) * | 2019-11-06 | 2020-02-25 | 西安交通大学 | Battery impedance spectrum measuring system and measuring method |
| CN111624404A (en) * | 2020-05-08 | 2020-09-04 | 西安交通大学 | Online transformer impedance spectrum measurement system and measurement method |
| CN113406516A (en) * | 2021-07-16 | 2021-09-17 | 山东泰开自动化有限公司 | Storage battery internal resistance on-line monitoring device based on low-current pulse discharge method |
-
2011
- 2011-12-03 CN CN2011204958628U patent/CN202453423U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116079A (en) * | 2013-01-25 | 2013-05-22 | 四川大学 | Impedance spectrum tester and impedance spectrum testing method |
| CN103116079B (en) * | 2013-01-25 | 2014-12-10 | 四川大学 | Impedance spectrum tester and impedance spectrum testing method |
| CN105203967A (en) * | 2015-10-19 | 2015-12-30 | 深圳市森派新能源科技有限公司 | Power battery deterioration degree test method and test device |
| CN107656215A (en) * | 2017-11-10 | 2018-02-02 | 华北电力大学 | A kind of battery functi on method for diagnosing status based on constant current mode impedance spectrum |
| CN109490399A (en) * | 2018-10-18 | 2019-03-19 | 京东方科技集团股份有限公司 | Electrochemistry detecting apparatus and electrochemical detection method |
| CN109490399B (en) * | 2018-10-18 | 2021-01-22 | 京东方科技集团股份有限公司 | Electrochemical detection device and electrochemical detection method |
| CN110837057A (en) * | 2019-11-06 | 2020-02-25 | 西安交通大学 | Battery impedance spectrum measuring system and measuring method |
| CN111624404A (en) * | 2020-05-08 | 2020-09-04 | 西安交通大学 | Online transformer impedance spectrum measurement system and measurement method |
| CN111624404B (en) * | 2020-05-08 | 2022-04-05 | 西安交通大学 | Online transformer impedance spectrum measurement system and measurement method |
| CN113406516A (en) * | 2021-07-16 | 2021-09-17 | 山东泰开自动化有限公司 | Storage battery internal resistance on-line monitoring device based on low-current pulse discharge method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20121203 |