CN102830358B - Thermoelectric parameter testing device of battery - Google Patents
Thermoelectric parameter testing device of battery Download PDFInfo
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- CN102830358B CN102830358B CN201210070454.7A CN201210070454A CN102830358B CN 102830358 B CN102830358 B CN 102830358B CN 201210070454 A CN201210070454 A CN 201210070454A CN 102830358 B CN102830358 B CN 102830358B
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Abstract
The invention discloses a thermoelectric parameter testing device of a battery. The thermoelectric parameter testing device comprises a battery charge and discharge setting module (1), a heat-conduction calorimetric measurement module (2) and a signal processing module (3); a to-be-tested battery fixing and wiring device (21) is put into a calorimetric bottle (22) and then put into a calorimetric tube (23); the battery charge and discharge module (1) provides different electrical parameters of the battery to be tested through the battery fixing and wiring device (21), so that the battery to be tested goes through different processes such as charge and discharge, and change curves of current, voltage and heat flow along with the time in the process are measured at the same time, and characteristic parameters representing discharge and discharge performances and security performance of the battery are obtained through an analyzer (31). The thermoelectric parameter testing device is high in intelligent degree and simple in testing method; the security performance of the battery can be evaluated when the electrical performance of the battery is evaluated by measuring heat and electric parameters and a built intelligent model, and various batteries can be effectively detected under the condition that artificial interference does not exist.
Description
Technical field
The present invention relates to battery thermoelectricity parameter test device, especially in battery charge and discharge process, the determinator of Simultaneously test voltage, electric current, hot-fluid.
Background technology
In cell production process, battery status parameter detecting is the key ensureing battery outgoing.Compared with Ni-MH battery or nickel-cadmium battery, lithium battery is lighter, there is no memory effect, and self-discharge rate is slower, be widely used as the rechargeable battery of the modern electronic equipment such as smart mobile phone and notebook computer, and in the high power applications such as electric automobile, electric tool and energy storage, but also there is outstanding safety problem in lithium ion battery.
Along with the quick growth of battery industry, the testing apparatus used in manufacture process also becomes extremely important.And the exemplary functions of current battery testing apparatus is as follows: (1) is activated and classification: after stacks of cells installs into, each unit must experience at least one charge and discharge cycles accurately controlled to activate work materials, converts it into available form.Utilize this process battery unit to be divided into different performance groups, to sell according to optional specification, this is called " classification ".(2) circulation and characteristic test: circulation refers to carries out repeatedly charging and discharging to battery unit and electric battery, to perform life and reliability test.In order to shorten the duration of charging, first most users selects constant current (CC) charge mode, is then switched to constant voltage (CV) charge mode.Feature refers to technical characteristics such as measuring the voltage of battery, capacity, specific storage and internal resistance.
In charge or discharge process, if the temperature overrate of battery, battery life may shorten.Under worst condition, too high temperature may cause cell fracture, even on fire.The patent of invention (CN 1142445C) of Midtronics Inc. of U.S. application is only connected to a temperature sensor to monitor battery charge and discharge process.Existing battery test apparatus, in charge and discharge cycles, also only monitors the temperature of lithium cells, can not evaluate its security performance.
Therefore, how while the electric property evaluating battery, its security performance of accurate evaluation is a problem demanding prompt solution.
Summary of the invention
The object of the invention is in test battery electrical characteristic parameter, while evaluating the electric property of battery, by the thermal value of Measurement accuracy battery, accurate evaluation is made to its security performance.
Object of the present invention is achieved by following technical proposals.
A kind of battery thermoelectricity parameter test device, comprising:
A battery charging and discharging arranges module 1;
Arrange with battery charging and discharging the mesuring battary that module 1 is connected to fix and electric wire connecting junction 21;
Described mesuring battary is fixed and electric wire connecting junction 21 is placed in calorimetric bottle 22 inside, and close contact;
Fix with mesuring battary and electronic signal processing module 11 that electric wire connecting junction 21 is connected;
The first A/D converter 12 be connected with electronic signal processing module 11;
And the calorimetric pipe 24 that contact supporting with calorimetric bottle 22;
The heat flow signal processing module 25 be connected with calorimetric pipe 24;
The second A/D converter 26 be connected with heat flow signal processing module 25;
The analyzer 31 that the first A/D converter 12, second A/D converter 26 be connected with heat flow signal processing module 25 is connected.
As can be seen from above-mentioned technical scheme, battery thermoelectricity parameter test device provided by the invention, the battery charging and discharging comprised arranges module 1 for hyperchannel, and multi-channel parameter arranges separate; During detection, battery charging and discharging arranges module 1 to each passage respectively by the discharge and recharge system of design, in different heat-conducting calorimetry module 2, mesuring battary is fixed and mesuring battary in electric wire connecting junction 21 provides voltage or arranges load, mesuring battary is made to be in charge or discharge process respectively, the parameters such as the voltage and current of this process gather by having multichannel electronic signal processing module 11, the digital signal changed through the first A/D converter 12, by analyzer 31 record, and saves as data file.Described mesuring battary changes heat flow signal through calorimetric bottle 22 by the thermoelectric pile in calorimetric pipe 24 owing to there is electrochemical reaction liberated heat, after described heat flow signal is processed by heat flow signal processing module 25, the signal changed through the second A/D converter 26, by analyzer 31 record, and saves as data file.
Analyzer 31 is according to hot-fluid and time curve, and the reaction heat being calculated above-mentioned mesuring battary charge and discharge process by integration produces total amount q
total.Utilize time and current data in electric signal to obtain electricity Q that its integral area is its different charging process and discharge process, then the reaction molal quantity n of charge and discharge process is calculated by formula (1), produce total amount q according to the reaction heat drawn
totalwith reaction molal quantity n, molar reactive enthalpy change H can be obtained in conjunction with formula (2);
n=Q/F=[∫i(t)dt]/F (1)
H=q
total/n (2)
Wherein, n is the amount of substance (mol) of reaction, and Q is the total electricity of reaction (C), and F is Faraday constant,
i (t)for the curve over time of electric current in charge and discharge process, q
totalfor reaction heat produces total amount (J), H is molar reactive enthalpy change (KJmol
-1), this molar reaction enthalpy becomes the thermodynamic characteristics parameter reflecting above-mentioned mesuring battary security.
Analyzer 31 calculates the capacity of mesuring battary according to electric signal, specific storage, the electrical feature parameters such as internal resistance.In conjunction with setting model, judge whether mesuring battary of this time detecting is qualified according to model of mind and carry out classification.Present invention incorporates hot characteristic parameter and the electrical feature parameter of battery, improve the accuracy of judgement and classification.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
In accompanying drawing 1: 1-battery charging and discharging arranges module, 2-heat-conducted calorimetry module, 3-signal processing module, 11-electronic signal processing module, the 12-the first A/D converter, 21-mesuring battary fixes and electric wire connecting junction, 22-calorimetric bottle, 23-calorimetric bottle stopper, 24-calorimetric pipe, 25-heat flow signal processing module, the 26-the second A/D converter, 31-analyzer.
Embodiment
The invention discloses a kind of battery thermoelectricity parameter test device, while test battery electrical characteristic parameter, by the thermal value of Measurement accuracy battery, the electric property evaluating battery makes accurate evaluation to its security performance simultaneously, improves accuracy of judgement degree.
Below in conjunction with the accompanying drawing 1 in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the structural representation of the battery thermoelectricity parameter test device that Fig. 1 embodiment of the present invention provides.
Battery thermoelectricity parameter test device provided by the invention, comprises battery charging and discharging module 1, mesuring battary fixes and electric wire connecting junction 21, calorimetric bottle 22, calorimetric pipe 24, heat flow signal processing module 25, second A/D converter 26, analyzer 31.First, start the power supply that battery charging and discharging arranges module 1, according to size and the battery material of mesuring battary, to each path setting discharge and recharge system, comprise constant-current charge duration, constant-voltage charge duration, time of repose, constant-current discharge duration and corresponding voltage, current value, wherein time of repose must be greater than the time that heat flow value gets back to baseline.Then start signal processing module 3, by the record period arranged, hot-fluid, voltage, current value that record different time is corresponding, preserve corresponding data file by analyzer 31.The molar reactive enthalpy change H of battery can calculate according to above-mentioned formula 1 and formula 2, and wherein n is the amount of substance of reaction, and Q is the total electricity of reaction, and F is Faraday constant,
i (t)for the curve over time of electric current in charge and discharge process, q
totalfor reaction heat produces total amount, H is molar reactive enthalpy change, and this molar reaction enthalpy becomes the thermodynamic characteristics parameter reflecting above-mentioned mesuring battary security.
According to electric signal, calculated the capacity of mesuring battary, specific storage, the electrical feature parameters such as internal resistance by analyzer 31, above-mentioned test signal and result of calculation all show on the display of analyzer 31.
Analyser 31 can introduce other data file in advance, these data are the different medium that repetition test obtains, different multiplying, different size size, the average result of the test figure of the battery of different materials, by the method establishment such as support vector machine and artificial intelligence model.The performance of battery evaluated more effectively by this model, in conjunction with setting model, judges whether mesuring battary of this time detecting is qualified and carries out classification.
In sum, intelligence degree of the present invention is high, method of testing is easy; By Simultaneously test voltage, electric current, hot-fluid parameter and the model of mind set up, can effectively not detect various battery by Human disturbance.The present invention is specially adapted to lithium ion battery manufacturer and carries out detection classification to its product.
Claims (3)
1. a battery thermoelectricity parameter test device, is characterized in that, comprising:
A battery charging and discharging arranges module (1); It is hyperchannel that described battery charging and discharging arranges module (1), multi-channel parameter arranges separate, and be connected from different heat-conducted calorimetry module (2) respectively, described battery charging and discharging arranges each path setting discharge and recharge system of module (1), described discharge and recharge system comprises constant-current charge duration, constant-voltage charge duration, time of repose, constant-current discharge duration and corresponding voltage, current value, and described time of repose is greater than the time that heat flow value gets back to baseline;
The multiple heat-conducted calorimetry module (2) that module is connected is set with discharge and recharge, each heat-conducted calorimetry module (2) arranges with battery charging and discharging the mesuring battary that module is connected by one respectively and fixes and electric wire connecting junction (21), mesuring battary described in one is placed in its inner and calorimetric bottle (22) of close contact, and the calorimetric pipe (24) that contacts supporting with calorimetric bottle forms;
The heat flow signal processing module (25) be connected with calorimetric pipe;
The second A/D converter (26) be connected with heat flow signal processing module;
The analyzer (31) be connected with the second A/D converter (26);
Signal processing module (3), signal processing module (3) comprises the heat flow signal processing module (25) be connected with calorimetric pipe, the second A/D converter (26) be connected with heat flow signal processing module and the analyzer be connected with the second A/D converter, described signal processing module (3) is by the record period arranged, hot-fluid, voltage, current value that record different time is corresponding, preserve corresponding data file by described analyzer (31);
Described analyzer (31) can introduce other data file in advance, these data are the different medium that repetition test obtains, different multiplying, different size size, the average result of the test figure of the battery of different materials, by support vector machine and artificial intelligence approach Modling model.
2. battery thermoelectricity parameter test device as claimed in claim 1, is characterized in that, also comprise:
The electronic signal processing module (11) be connected with mesuring battary;
The first A/D converter (12) be connected with described electronic signal processing module (11), this first A/D converter (12) is connected with described analyzer (31).
3. battery thermoelectricity parameter test device as claimed in claim 1, it is characterized in that, described analyzer (31) is provided with the display of display analysis result.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210070454.7A CN102830358B (en) | 2012-03-17 | 2012-03-17 | Thermoelectric parameter testing device of battery |
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| CN201210070454.7A CN102830358B (en) | 2012-03-17 | 2012-03-17 | Thermoelectric parameter testing device of battery |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013206942A1 (en) * | 2013-04-17 | 2014-10-23 | Robert Bosch Gmbh | Battery system with arranged in a battery string battery modules and method for determining at least one operating parameter of a battery module of the battery system |
| CN103293484A (en) * | 2013-06-06 | 2013-09-11 | 天津力神电池股份有限公司 | Method for quickly evaluating performance of lithium ion batteries by testing quantities of released heat |
| CN103344359A (en) * | 2013-06-26 | 2013-10-09 | 中国科学技术大学 | Method for dynamic measurement of heat generated by secondary battery in cyclic process |
| CN105425161B (en) * | 2015-11-29 | 2018-06-01 | 长沙理工大学 | A kind of lithium ion battery single electrode thermoelectricity parameter test device |
| CN105510834B (en) * | 2015-11-29 | 2018-06-01 | 湖南女子学院 | A kind of single electrode test device for thermoelectrochemistry research |
| CN108344946B (en) * | 2017-01-22 | 2023-12-15 | 中国科学院空间应用工程与技术中心 | Battery heating value testing method and battery heating value testing device |
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| CN101576520A (en) * | 2009-06-03 | 2009-11-11 | 中国科学院化学研究所 | Thermal power measurement device |
| CN101697376A (en) * | 2009-09-30 | 2010-04-21 | 徐玉凤 | Method and special device for comprehensive control of storage battery pack |
| KR20110068021A (en) * | 2009-12-15 | 2011-06-22 | 현대중공업 주식회사 | Lithium polymer battery model and digital simulator for electrical power system analysis in electrical propulsion submarine |
| CN201886133U (en) * | 2010-08-20 | 2011-06-29 | 雅达电子有限公司 | Improved battery testing system |
| CN202583429U (en) * | 2012-03-17 | 2012-12-05 | 长沙理工大学 | Testing device for thermoelectric parameter of battery |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101576520A (en) * | 2009-06-03 | 2009-11-11 | 中国科学院化学研究所 | Thermal power measurement device |
| CN101697376A (en) * | 2009-09-30 | 2010-04-21 | 徐玉凤 | Method and special device for comprehensive control of storage battery pack |
| KR20110068021A (en) * | 2009-12-15 | 2011-06-22 | 현대중공업 주식회사 | Lithium polymer battery model and digital simulator for electrical power system analysis in electrical propulsion submarine |
| CN201886133U (en) * | 2010-08-20 | 2011-06-29 | 雅达电子有限公司 | Improved battery testing system |
| CN202583429U (en) * | 2012-03-17 | 2012-12-05 | 长沙理工大学 | Testing device for thermoelectric parameter of battery |
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