CN102830358A - Thermoelectric parameter testing device of battery - Google Patents

Thermoelectric parameter testing device of battery Download PDF

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Publication number
CN102830358A
CN102830358A CN2012100704547A CN201210070454A CN102830358A CN 102830358 A CN102830358 A CN 102830358A CN 2012100704547 A CN2012100704547 A CN 2012100704547A CN 201210070454 A CN201210070454 A CN 201210070454A CN 102830358 A CN102830358 A CN 102830358A
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battery
module
calorimetric
discharge
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CN102830358B (en
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宋刘斌
肖忠良
张锋
谢峥璨
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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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

The thermoelectric parameter test device of a kind of battery
Technical field
The present invention relates to measure the determinator of voltage, electric current, hot-fluid simultaneously in battery thermoelectric parameter test device, the especially battery charge and discharge process.
Background technology
In the battery production process, the battery status parameter detecting is the key that guarantees the battery outgoing.Compare with Ni-MH battery or nickel-cadmium battery; Lithium battery is lighter; Do not have memory effect, and self-discharge rate is slower, is widely used as the rechargeable battery of modern electronic equipments 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, it is extremely important that the testing apparatus of using in the manufacture process also becomes.And the exemplary functions of current battery testing apparatus is following: (1) is activated and classification: after the battery unit assembling was accomplished, each unit must experience at least one charge and discharge cycles of accurately controlling to activate work materials, converts it into available form.Utilize this process that battery unit is divided into different performance groups, so that sell according to optional specification, this is called " classification ".(2) circulation and characteristic test: circulation is meant repeatedly charges and discharges battery unit and electric battery, with execution life-span and reliability testing.In order to shorten the duration of charging, most users at first select constant current (CC) charge mode, switch to constant voltage (CV) charge mode then.Characteristic is meant the technical characteristics such as voltage, capacity, specific storage and internal resistance of measuring battery.
In the charge or discharge process, if the temperature overrate of battery, battery life may shorten.Under the worst condition, too high temperature may cause cell fracture, even on fire.The patent of invention (CN 1142445C) of U.S. Midtronics Inc. application only is connected to a temperature sensor and monitors battery charge and discharge process.The conventional battery testing apparatus in charge and discharge cycles, is also only monitored the temperature of lithium cells, can not estimate its security performance.
Therefore, how in the electric property of estimating battery, accurately estimating its security performance is a problem demanding prompt solution.
Summary of the invention
The objective of the invention is in test battery electrical characteristic parameter, when estimating the electric property of battery,, its security performance is made accurate evaluation through the thermal value of accurate measurement battery.
The object of the invention is achieved through following technical proposals.
The thermoelectric parameter test device of a kind of battery comprises:
A battery charging and discharging is provided with module 1;
With battery charging and discharging the fixing and electric wire connecting junction 21 of mesuring battary that module 1 links to each other is set;
The fixing electric wire connecting junction 21 that reaches of described mesuring battary places calorimetric bottle 22 inside, and closely contact;
The electric signal processing module 11 fixing with mesuring battary and electric wire connecting junction 21 links to each other;
First A/D converter 12 that links to each other with electric signal processing module 11;
Supporting with calorimetric bottle 22 and contact calorimetric pipe 24;
The heat flow signal processing module 25 that links to each other with calorimetric pipe 24;
Second A/D converter 26 that links to each other with heat flow signal processing module 25;
The analyzer 31 that first A/D converter 12 that links to each other with heat flow signal processing module 25, second A/D converter 26 link to each other.
Can find out that from above-mentioned technical scheme the thermoelectric parameter test device of battery provided by the invention, the battery charging and discharging that comprises are provided with module 1 and are hyperchannel, the hyperchannel parameter is provided with separate; During detection; Battery charging and discharging be provided with module 1 to each passage respectively by the design the system that discharges and recharges; The fixing mesuring battary that reaches in the electric wire connecting junction 21 of mesuring battary provides voltage or load is set in different heat-conducting calorimetry modules 2; Make mesuring battary be in the charge or discharge process respectively; Parameters such as the voltage and current of this process are gathered by having multichannel electric signal processing module 11, by analyzer 31 records, and save as data file through the digital signal of first A/D converter, 12 conversions.Said mesuring battary changes heat flow signal through calorimetric bottle 22 by the thermoelectric piles in the calorimetric pipe 24 because the electrochemical reaction liberated heat takes place; After said heat flow signal is handled by heat flow signal processing module 25; By analyzer 31 records, and save as data file through the signal of second A/D converter 26 conversion.
Analyzer 31 is according to hot-fluid and time curve, and the reaction heat of calculating above-mentioned mesuring battary charge and discharge process through integration produces total amount q TotalUtilize in the electric signal time to obtain the electric weight Q that its integral area is its different charging processes and discharge process, calculate the reaction molal quantity n of charge and discharge process again by formula (1), produce total amount q according to the reaction heat that has drawn with current data TotalWith reaction molal quantity n, can obtain molar reactive enthalpy change H 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 reaction total electric weight (C), and F is a Faraday constant, I (t)Be the curve over time of electric current in the 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 of the above-mentioned mesuring battary security of reflection.
Analyzer 31 calculates the capacity of mesuring battary, specific storage, electrical feature parameters such as internal resistance according to electric signal.In conjunction with condition is set, judges that mesuring battary of this time detecting is whether qualified and carry out classification according to model of mind.The present invention has combined the hot characteristic parameter and the electrical feature parameter of battery, has improved the accuracy of judgement and classification.
Description of drawings
Fig. 1 is a structure principle chart of the present invention.
In the accompanying drawing 1: 1-battery charging and discharging is provided with module, 2-heat-conducted calorimetry module, 3-signal processing module, 11-electric signal processing module, 12-the first A/D converter, fixing electric wire connecting junction, 22-calorimetric bottle, 23-calorimetric bottle stopper, 24-calorimetric pipe, 25-heat flow signal processing module, 26-the second A/D converter, the 31-analyzer of reaching of 21-mesuring battary.
Embodiment
The invention discloses the thermoelectric parameter test device of a kind of battery, in test battery electrical characteristic parameter,, estimate the electric property of battery and simultaneously its security performance is made accurate evaluation, improve the accuracy of judgement degree through the thermal value of accurate measurement battery.
To combine the accompanying drawing 1 in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
See also Fig. 1, the structural representation of the thermoelectric parameter test device of the battery that Fig. 1 embodiment of the invention provides.
The thermoelectric parameter test device of battery provided by the invention comprises battery charging and discharging module 1, fixing electric wire connecting junction 21, calorimetric bottle 22, calorimetric pipe 24, heat flow signal processing module 25, second A/D converter 26, the analyzer 31 of reaching of mesuring battary.At first; Start the power supply that battery charging and discharging is provided with module 1; Size and battery material according to mesuring battary; Each path setting is discharged and recharged system, comprise constant-current charge duration, constant-voltage charge duration, time of repose, constant-current discharge duration and correspondent voltage, current value, wherein time of repose must be got back to the time of baseline greater than heat flow value.The start signal processing module 3 then, and by the record cycle that is provided with, corresponding hot-fluid, voltage, the current value of record different time preserved the corresponding data file by analyzer 31.The molar reactive enthalpy change H of battery can calculate with formula 2 according to above-mentioned formula 1, and wherein n is the amount of substance of reaction, and Q is the total electric weight of reaction, and F is a Faraday constant, I (t)Be the curve over time of electric current in the charge and discharge process, q TotalFor reaction heat produces total amount, H is the molar reactive enthalpy change, and this molar reaction enthalpy becomes the thermodynamic characteristics parameter of the above-mentioned mesuring battary security of reflection.
According to electric signal, calculate the capacity of mesuring battary through analyzer 31, specific storage, electrical feature parameters such as internal resistance, above-mentioned test signal and result of calculation all show on the display of analyzer 31.
Analyser 31 can have been introduced 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 is set up model through methods such as SVMs and artificial intelligence.This model is estimated the performance of battery more effectively, in conjunction with condition is set, judges that mesuring battary of this time detecting is whether qualified and carries out classification.
In sum, the intelligent degree of the present invention is high, method of testing is easy; Through the model of mind of measuring voltage, electric current, hot-fluid parameter simultaneously and being set up, can not intrusively various batteries are detected effectively by manual work.The present invention is specially adapted to lithium ion battery manufacturer its product is detected classification.

Claims (5)

1. the thermoelectric parameter test device of battery is characterized in that, comprising:
A battery charging and discharging is provided with module (1);
With battery charging and discharging the fixing and electric wire connecting junction (21) of mesuring battary that module links to each other is set;
Described mesuring battary places its calorimetric bottle (22) inner and that closely contact;
Supporting with the calorimetric bottle and contact calorimetric pipe (24);
The heat flow signal processing module (25) that links to each other with the calorimetric pipe;
Second A/D converter (26) that links to each other with the heat flow signal processing module;
The analyzer (31) that links to each other with second A/D converter (26).
2. the thermoelectric parameter test device of battery as claimed in claim 1 is characterized in that, also comprises:
The electric signal processing module (11) that links to each other with mesuring battary;
First A/D converter (12) that links to each other with said electric signal processing module (11), this first A/D converter (12) links to each other with said analyzer (31).
3. the thermoelectric parameter test device of battery as claimed in claim 1 is characterized in that said analyzer (31) is provided with display analysis result's display.
4. the thermoelectric parameter test device of battery as claimed in claim 1 is characterized in that said heat-conducted calorimetry module (2) is a plurality of, and tests different mesuring battaries respectively.
5. like claim 1; The thermoelectric parameter test device of 2 described batteries is characterized in that, said battery charging and discharging is provided with module (1) and is hyperchannel; The hyperchannel parameter is provided with separate, and link to each other with different heat-conducted calorimetry modules (2) respectively .
CN201210070454.7A 2012-03-17 2012-03-17 Thermoelectric parameter testing device of battery Expired - Fee Related CN102830358B (en)

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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
CN104113101A (en) * 2013-04-17 2014-10-22 罗伯特·博世有限公司 Battery system with battery module and method for determining operating parameters
CN105425161A (en) * 2015-11-29 2016-03-23 长沙理工大学 Testing apparatus for thermoelectric parameter of single electrode of lithium ion battery
CN105510834A (en) * 2015-11-29 2016-04-20 湖南女子学院 Single-electrode test apparatus for thermoelectric chemical research
CN108344946A (en) * 2017-01-22 2018-07-31 中国科学院空间应用工程与技术中心 Battery-heating weight testing method and battery-heating amount test device

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CN104113101A (en) * 2013-04-17 2014-10-22 罗伯特·博世有限公司 Battery system with battery module and method for determining operating parameters
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
CN105425161A (en) * 2015-11-29 2016-03-23 长沙理工大学 Testing apparatus for thermoelectric parameter of single electrode of lithium ion battery
CN105510834A (en) * 2015-11-29 2016-04-20 湖南女子学院 Single-electrode test apparatus for thermoelectric chemical research
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
CN108344946A (en) * 2017-01-22 2018-07-31 中国科学院空间应用工程与技术中心 Battery-heating weight testing method and battery-heating amount test device
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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