CN103163378A - Battery polarization internal resistance measuring method - Google Patents
Battery polarization internal resistance measuring method Download PDFInfo
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- CN103163378A CN103163378A CN2011104044236A CN201110404423A CN103163378A CN 103163378 A CN103163378 A CN 103163378A CN 2011104044236 A CN2011104044236 A CN 2011104044236A CN 201110404423 A CN201110404423 A CN 201110404423A CN 103163378 A CN103163378 A CN 103163378A
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Abstract
The invention relates to a battery polarization internal resistance measuring method which comprises a battery polarization internal resistance measuring device, a constant flow source H1, an operational amplifier P1, a signal switcher K1, a measured battery B1, a phase-locked loop circuit S1 and a display module D1, wherein the constant flow source H1 has current of 100 mA and is adjustable in frequency ranging from 0.1 Hz to 100 Hz, and the display module D1 is composed of ICL 7135. The measured battery is connected with the circuit through a special four-wire fixture, the constant flow source H1 is adjusted according to requirements to output pulsed excitation current of fixed frequency, when measurement is started, the excitation current is connected with the measured battery through the signal switcher K1, and when the excitation current passes through the measured battery B1, two ends of the measured battery B1 produce voltage response. After lock-in amplification is conducted to the voltage response of the battery through the phase-locked loop circuit S1, voltage changing quantity of battery impedance is obtained, the voltage changing quantity of the battery impedance is output to the display module D1 after amplified by 10 times through the operational amplifier P1, and values of the battery polarization internal resistance are displayed on the display module.
Description
Technical field
The present invention relates to a kind of battery polarization internal resistance measurement method, belong to the battery detecting field.
Background technology
The internal resistance of cell refers to battery when work, and electric current flows through the suffered resistance of inside battery, and it comprises ohmic internal resistance and polarization resistance.Ohmic internal resistance mainly refers to be comprised of the contact resistance of electrode material, electrolytic solution, barrier film resistance and each several part part, and is relevant with the size of battery, structure, assembling etc.When electric current passed through electrode, the phenomenon that electrode potential departs from equilibrium electrod potential was called polarization of electrode.Polarization resistance refers to the caused internal resistance that polarizes of the positive pole of battery and negative pole when carrying out electrochemical reaction.
Conventional internal resistance of cell measuring equipment is all the ohmic internal resistance of measuring battery at present, is used as a parameter of judgement battery performance.Through practice for a long time, we find that the ohmic internal resistance of battery acts on limited when the characterizing battery performance, a lot of the same batteries of ohmic internal resistance, its dynamic property is mutually far short of what is expected with life characteristic, research repeatedly through the galvanochemistry expert, think that polarization resistance can in the key property that reflects to a greater extent battery, so measure the polarization resistance of battery, can obtain the more effectively parameter of characterizing battery characteristic.Due to the singularity of polarization resistance, use conventional ohmic internal resistance testing apparatus can't measure the polarization resistance of battery, therefore, we have designed this measurement mechanism that can measure the battery polarization internal resistance.
Summary of the invention
The present invention is intended to invent a kind of battery polarization internal resistance measurement method, and the method can directly be measured the polarization resistance of battery and measurement result is presented on the visible display module of user, proposes simultaneously a kind of battery polarization internal resistance measurement device.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The present invention is a kind of battery polarization internal resistance measurement method, comprise a kind of battery polarization internal resistance measurement device, by the constant current source H1 of frequency from the adjustable 100mA electric current of 0.1Hz to 100Hz, operational amplifier P1, signal shifter K1, tested battery B1, phase-locked loop circuit S1, the display module D1 that is made of ICL7135 totally 6 parts forms, and sees accompanying drawing 1.
With reference to the accompanying drawings 1, the course of work of the present invention is described:
tested battery is connected in circuit by special-purpose four wire holder, regulate as required the pulse excitation electric current of constant current source H1 output fixed frequency, when beginning to measure, by signal shifter K1, exciting current is connected on tested battery, when this exciting current passes through tested battery B1, in tested battery B1 two ends generation voltage responsive, after by phase-locked loop circuit S1, phase-locked amplification being carried out in the voltage responsive of battery, obtain the voltage variety of battery impedance, then after by precision operational-amplifier P1, the voltage variety of battery impedance being amplified 10 times, output to display module D1, demonstrate the value of battery polarization internal resistance on display module.
According to the above course of work, the ultimate principle of measuring method of the present invention is described below:
After tested battery two ends are coupled with the 100mA current excitation, obtain exciter response voltage by the phaselocked loop amplifying circuit, this voltage is divided by exciting current 0.1A, the value of gained is the battery polarization internal resistance, by after increasing the precision operational-amplifier of 10 times of amplifications after phase-locked loop circuit, the magnitude of voltage that obtains is divided by 1 polarization resistance that is battery, and this voltage value equates with battery polarization internal resistance numerical value, be shown as the value of battery polarization internal resistance on display module.
According to the measurement requirement of reality, by the output frequency of constant current source output pulse current is set, can obtain the battery polarization internal resistance in difference excitation time domain.
Description of drawings:
Accompanying drawing 1 is theory diagram of the present invention.
Embodiment:
In order to make technical scheme of the present invention clearer, below in conjunction with drawings and Examples, the present invention is described in more detail, and instantiation described herein only in order to explain the present invention, is not limited to the present invention.
With reference to accompanying drawing 1, the first step, regulating the constant current source output frequency is 1Hz; Second step is connected to a cylindrical lithium ion battery on the four-wire system unit clamp; In the 3rd step, the conditioning signal switch is connected to the pulse excitation electric current of constant current source output on tested battery, and the 4th goes on foot, and reads the polarization resistance value of this tested battery by display module.
Claims (3)
1. battery polarization internal resistance measurement method, comprise a kind of battery polarization internal resistance measurement device, by the constant current source H1 of frequency from the adjustable 100mA electric current of 0.1Hz to 100Hz, operational amplifier P1, signal shifter K1, tested battery B1, phase-locked loop circuit S1, the display module D1 that is made of ICL7135 totally 6 parts forms, it is characterized in that: tested battery is connected in circuit by special-purpose four wire holder, regulate as required the pulse excitation electric current of constant current source H1 output fixed frequency, when beginning to measure, by signal shifter K1, exciting current is connected on tested battery, when this exciting current passes through tested battery B1, in tested battery B1 two ends generation voltage responsive, after by phase-locked loop circuit S1, phase-locked amplification being carried out in the voltage responsive of battery, obtain the voltage variety of battery impedance, then after by precision operational-amplifier P1, the voltage variety of battery impedance being amplified 10 times, output to display module D1, demonstrate the value of battery polarization internal resistance on display module.
2. a kind of battery polarization internal resistance measurement method according to claim 1, it is characterized in that: after tested battery two ends are coupled with the 100mA current excitation, obtain exciter response voltage by the phaselocked loop amplifying circuit, this voltage is divided by exciting current 0.1A, the value of gained is the battery polarization internal resistance, by after increasing the precision operational-amplifier of 10 times of amplifications after phase-locked loop circuit, the magnitude of voltage that obtains is divided by 1 polarization resistance that is battery, this voltage value equates with battery polarization internal resistance numerical value, be shown as the value of battery polarization internal resistance on display module.
3. a kind of battery polarization internal resistance measurement method according to claim 1, is characterized in that: by the output frequency of constant current source output pulse current is set, can obtain the battery polarization internal resistance in difference excitation time domain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104044236A CN103163378A (en) | 2011-12-08 | 2011-12-08 | Battery polarization internal resistance measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104044236A CN103163378A (en) | 2011-12-08 | 2011-12-08 | Battery polarization internal resistance measuring method |
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| CN103163378A true CN103163378A (en) | 2013-06-19 |
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| CN2011104044236A Pending CN103163378A (en) | 2011-12-08 | 2011-12-08 | Battery polarization internal resistance measuring method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108459277A (en) * | 2018-05-03 | 2018-08-28 | 北京新能源汽车股份有限公司 | A kind of acquisition methods, device and the measuring apparatus of electrical connection internal resistance |
| CN110716147A (en) * | 2019-11-14 | 2020-01-21 | 云蜂数智物联网有限公司 | Method and device for measuring internal resistance of battery pack |
| CN115616431A (en) * | 2022-12-19 | 2023-01-17 | 京清数电(北京)技术有限公司 | Method and device for monitoring internal resistance of battery by using energy storage converter and computer equipment |
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| US4109196A (en) * | 1976-12-03 | 1978-08-22 | Honeywell Inc. | Resistance measuring circuit |
| JPS5558466A (en) * | 1978-10-25 | 1980-05-01 | Hodaka Denshi Gijutsu Kenkyusho:Kk | Resistance measuring circuit |
| CN201438209U (en) * | 2009-06-30 | 2010-04-14 | 比亚迪股份有限公司 | Testing device for internal resistance of battery |
| CN102053226A (en) * | 2009-10-29 | 2011-05-11 | 比亚迪股份有限公司 | Device and method for testing internal resistance of battery |
| CN201965182U (en) * | 2010-12-31 | 2011-09-07 | 杭州华塑加达网络科技有限公司 | Testing system for low-current circulating excitation battery internal resistance |
| CN202393835U (en) * | 2011-11-21 | 2012-08-22 | 哈尔滨智木科技有限公司 | Device for measuring polarized internal resistance of battery |
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2011
- 2011-12-08 CN CN2011104044236A patent/CN103163378A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4109196A (en) * | 1976-12-03 | 1978-08-22 | Honeywell Inc. | Resistance measuring circuit |
| JPS5558466A (en) * | 1978-10-25 | 1980-05-01 | Hodaka Denshi Gijutsu Kenkyusho:Kk | Resistance measuring circuit |
| CN201438209U (en) * | 2009-06-30 | 2010-04-14 | 比亚迪股份有限公司 | Testing device for internal resistance of battery |
| CN102053226A (en) * | 2009-10-29 | 2011-05-11 | 比亚迪股份有限公司 | Device and method for testing internal resistance of battery |
| CN201965182U (en) * | 2010-12-31 | 2011-09-07 | 杭州华塑加达网络科技有限公司 | Testing system for low-current circulating excitation battery internal resistance |
| CN202393835U (en) * | 2011-11-21 | 2012-08-22 | 哈尔滨智木科技有限公司 | Device for measuring polarized internal resistance of battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108459277A (en) * | 2018-05-03 | 2018-08-28 | 北京新能源汽车股份有限公司 | A kind of acquisition methods, device and the measuring apparatus of electrical connection internal resistance |
| CN110716147A (en) * | 2019-11-14 | 2020-01-21 | 云蜂数智物联网有限公司 | Method and device for measuring internal resistance of battery pack |
| CN115616431A (en) * | 2022-12-19 | 2023-01-17 | 京清数电(北京)技术有限公司 | Method and device for monitoring internal resistance of battery by using energy storage converter and computer equipment |
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Application publication date: 20130619 |