CN202583429U - Testing device for thermoelectric parameter of battery - Google Patents
Testing device for thermoelectric parameter of battery Download PDFInfo
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- CN202583429U CN202583429U CN 201220100445 CN201220100445U CN202583429U CN 202583429 U CN202583429 U CN 202583429U CN 201220100445 CN201220100445 CN 201220100445 CN 201220100445 U CN201220100445 U CN 201220100445U CN 202583429 U CN202583429 U CN 202583429U
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Abstract
The utility model discloses a testing device for thermoelectric parameters of a battery. The testing device comprises a battery charge and discharge arrangement module (1), a thermal conducting heat measuring module (2) and a signal processing module (3). A to-be-tested battery fixing and wiring device (21) is arranged in a heating measuring bottle (22) and is then disposed in a heating measuring tube (23). The battery charge and discharge arrangement module (1) helps to provide different electric parameters to a to-be-tested battery to make the to-be-tested battery undergo charge, discharge and other different processes. Meanwhile, changing curves of current, voltage and heat flow along with time during the above process are determined, and characteristic parameters about the charge and discharge performance and the safety performance of the battery can be obtained through an analyzer (31). The testing tool is high in integration and simple in testing method. Through test of thermal and electrical parameters and an established intelligent model, the testing tool is capable of evaluating the electrical performance of the battery, evaluating the safety performance of the battery and also effectively detecting various batteries with no manual interference.
Description
Technical field
The utility model relates in battery thermoelectric parameter test device, the especially battery charge and discharge process, measures the determinator of voltage, electric current, hot-fluid simultaneously.
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 purpose of the utility model is in test battery electrical characteristic parameter, when estimating the electric property of battery, through the thermal value of accurate measurement battery, its security performance is made accurate evaluation.
The purpose of the utility model 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 the battery that the utility model provides, 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.
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.
Description of drawings
Fig. 1 is the structure principle chart of the utility model.
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 utility model 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 among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, 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 utility model protection.
See also Fig. 1, the structural representation of the thermoelectric parameter test device of the battery that Fig. 1 the utility model embodiment provides.
The thermoelectric parameter test device of the battery that the utility model provides 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.
In sum, the intelligent degree of the utility model 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 utility model is specially adapted to lithium ion battery manufacturer its product is detected classification.
Claims (4)
1. the thermoelectric parameter test device of battery is characterized in that, comprising:
A battery charging and discharging is provided with module (1);
The a plurality of heat-conducted calorimetry module (2) that module links to each other is set with discharging and recharging; Each heat-conducted calorimetry module (2) is provided with the fixing and electric wire connecting junction (21) of mesuring battary that module links to each other by one with battery charging and discharging respectively; A described mesuring battary places its calorimetric bottle (22) inner and that closely contact, and a calorimetric pipe (24) supporting with the calorimetric bottle and that contact is formed;
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 battery charging and discharging is provided with module (1) and is hyperchannel, and it is separate that the hyperchannel parameter is provided with, and link to each other with different heat-conducted calorimetry modules (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220100445 CN202583429U (en) | 2012-03-17 | 2012-03-17 | Testing device for thermoelectric parameter of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220100445 CN202583429U (en) | 2012-03-17 | 2012-03-17 | Testing device for thermoelectric parameter of battery |
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| Publication Number | Publication Date |
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| CN202583429U true CN202583429U (en) | 2012-12-05 |
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| CN 201220100445 Expired - Fee Related CN202583429U (en) | 2012-03-17 | 2012-03-17 | Testing device for thermoelectric parameter of battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830358A (en) * | 2012-03-17 | 2012-12-19 | 长沙理工大学 | Thermoelectric parameter testing device of battery |
| WO2020199416A1 (en) * | 2019-04-02 | 2020-10-08 | 清华大学 | Quantitative evaluation method and system for thermal runaway safety of power battery |
-
2012
- 2012-03-17 CN CN 201220100445 patent/CN202583429U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830358A (en) * | 2012-03-17 | 2012-12-19 | 长沙理工大学 | Thermoelectric parameter testing device of battery |
| CN102830358B (en) * | 2012-03-17 | 2015-01-21 | 长沙理工大学 | Thermoelectric parameter testing device of battery |
| WO2020199416A1 (en) * | 2019-04-02 | 2020-10-08 | 清华大学 | Quantitative evaluation method and system for thermal runaway safety of power battery |
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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: 20121205 Termination date: 20140317 |