CN107576917A - A kind of universal single lithium battery external short circuit test method - Google Patents
A kind of universal single lithium battery external short circuit test method Download PDFInfo
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- CN107576917A CN107576917A CN201710856669.4A CN201710856669A CN107576917A CN 107576917 A CN107576917 A CN 107576917A CN 201710856669 A CN201710856669 A CN 201710856669A CN 107576917 A CN107576917 A CN 107576917A
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Abstract
A kind of universal single lithium battery external short circuit test method, comprises the following steps：A), it is connected respectively with the both positive and negative polarity shorting member of external short circuit experimental rig to lithium cell charging and by its positive/negative terminal；B), 2 thermocouples are mounted on the shell of lithium battery both positive and negative polarity annex respectively, it is ensured that the thermocouple of 2 monitoring temperature is working properly；C the test lead of monitoring voltage, the magnitude of voltage U checked on voltage display, it is ensured that the data of voltage monitoring are normal), are connected；D the test switch of external short circuit experimental rig), is acted so that the both positive and negative polarity short circuit of lithium battery, cause the external short circuit of lithium battery both positive and negative polarity；E it), will test and terminate according to one of following two conditions：(1) when dropping to lower than peak temperature 20% at a temperature of lithium battery；Or (2) are less than 0.2V when the magnitude of voltage of lithium battery, and/or when lithium battery temperature is test ambient temperature ± 10 DEG C.Can monitor temperature using the method for the present invention can also monitoring voltage.
Description
Technical field
The application is related to technical field of lithium batteries, and in particular to a kind of universal single lithium battery external short circuit experiment side
Method.
Technical background
Nowadays, because global petroleum resources continue the in short supply and continuous deterioration of atmospheric environment, the exploitation of new energy
With using receiving the most attentions of countries in the world, lithium battery with its operating voltage height, small volume, light weight, energy height, without note
Recall effect, pollution-free, the distinctive performance advantage such as have extended cycle life, by one of preferable energy developed as 21 century.With
The development of science and technology and the raising of the people's material and cultural life level, the fast development of information and microelectronics industry are brought
A large amount of industrial, civilian, portable medical electronic product appearances, the development and exploitation of ev industry, and environment
The enhancing of protective awareness, people are to small volume, in light weight, high-energy, safe and reliable, pollution-free, can charge the lithium that uses repeatedly
The demand of battery is more urgent, also turns into the power for promoting lithium battery fast-developing.
In China, it is consumer that lithium battery has been widely used for notebook computer, tablet personal computer, mobile phone and portable power source etc.
In electronic product, but growth momentum it is the most powerful also surely belong to be applied to new-energy automobile field, field of lithium investment is risen
Sale with new-energy automobile is high-volume closely related.Current most new-energy automobiles are using lithium battery as power source, lithium
Battery cost is about the 50% of pure electric automobile cost, as the industries such as New-energy electric vehicle, electric bicycle are by state's housekeeping
Plan supports and developed rapidly that lithium battery industry will welcome the golden period of development.Should along with the fast development and reality of lithium battery
With the safety problem of lithium battery is increasingly paid attention to by countries in the world.The developed countries such as Europe, the U.S. have put into effect more in succession
The peace of a series of lithium battery and battery pack is also formulated and issued to the examination criteria of individual lithium battery, in this case, China
Full inspection surveys national standard, professional standard etc., and the product quality of specification lithium battery industry is carried out with this, and it is horizontal to improve industry development.
In lithium battery examination criteria at home and abroad, external short circuit experiment is all that the most important of lithium battery safety test must
Inspection project.But the experimental factor and scene considered due to various countries is slightly different so that is formulating the termination bar of external short circuit experiment
During part, the physical quantity of reference is not unique, and some is using some particular temperature value as experiment end condition, and some is with some specific voltage
It is worth to test end condition, this make it that experiment end condition is more chaotic when completing external short circuit experiment.It is also, existing at present
The single lithium battery external short circuit experimental rig of enforcement is simple monitoring temperature or only monitoring voltage, function are more single
One, it is impossible to while meet different requirements.In addition, the species of lithium battery and profile are various now, the appearance structure of single lithium battery
It can be divided into：Cylindrical type, square, Soft Roll type three types, and the external terminal difference of the single lithium battery of these three types compared with
Greatly, when carrying out external short circuit experiment, meet that the connected mode of different type lithium battery is also ratio using a kind of experimental rig
More difficult.
Therefore, in order to meet different demands, the different tests end condition of external short circuit experiment can be monitored, while can be fitted
With the demand of different appearance structure single lithium battery short-circuit tests.Need a kind of universal single lithium battery external short circuit experiment side
Method, temperature or the external short circuit test method of monitoring voltage can be monitored.
The content of the invention
A variety of demands of different monitoring condition, technical scheme are as follows during in order to meet test：
A kind of universal single lithium battery external short circuit test method, comprises the following steps：
A), lithium battery is charged according to test method as defined in coherent detection standard, is placed on coherent detection standard regulation
Environment temperature in, the positive/negative external terminal of lithium battery is connected with the both positive and negative polarity shorting member of external short circuit experimental rig respectively
Connect, and ensure to be connected firmly；
B), the thermocouple of 2 monitoring temperature is mounted on the shell of lithium battery both positive and negative polarity annex respectively, checks that temperature shows
Show the temperature value T1 and T2 on device, it is ensured that the thermocouple of 2 monitoring temperature is working properly；
C the test lead of monitoring voltage, the magnitude of voltage U checked on voltage display, it is ensured that the data of voltage monitoring), are connected
Normally；
D the test switch of external short circuit experimental rig), is opened so that the both positive and negative polarity short circuit of lithium battery, causing lithium battery just
The external short circuit of negative pole；
E it), will test and terminate according to one of following two conditions：
(1) experiment carries out a period of time, the temperature value checked on temperature indicator, and records the peak temperature of experiment, when
When lower than peak temperature 20% is dropped at a temperature of lithium battery, the test switch of external short circuit experimental rig, external short circuit are closed
Off-test；Or
(2) experiment carries out a period of time, the magnitude of voltage U checked on voltage display, the temperature checked on temperature indicator
Value, when magnitude of voltage U is less than 0.2V, or T1/T2 is test ambient temperature ± 10 DEG C, close the test of external short circuit experimental rig
Switch, external short circuit off-test.
Brief description of the drawings
Fig. 1 is used single lithium battery external short circuit experimental rig schematic diagram when the inventive method is applied.
Embodiment
Single lithium battery external short circuit experimental rig schematic diagram is as shown in figure 1, wherein, test battery is test specimen lithium electricity
Pond；Switch (connection battery is just born with connection battery) is the positive and negative electrode shorting member of external short circuit experimental rig；Relay is control
The control unit of short circuit outside lithium battery both positive and negative polarity processed；Test switch is the button that can carry out manual control, can control relay
The disconnection of device, closed action；Temperature indicator is monitoring temperature part (the temperature T1/T2 of display both positive and negative polarity), and front end is thermoelectricity
It is even, it is mounted on the shell of lithium battery both positive and negative polarity annex, real-time collecting temperature data；Voltage display and voltage test points are electricity
Monitoring part is pressed, collection voltages data before outside short-circuit test and after experiment.
The advantages of experimental rig, comprises at least
1) present apparatus is first the monitoring of the case temperature of lithium battery, voltage monitoring, applied to single lithium battery external short circuit
In experiment, and achieve good effect；
2) part that is connected of the device is flexible, suitable for the single lithium battery of a variety of appearance structures, including：Cylinder
Type, square, Soft Roll type；
3) shell of the device, support board are all made of heat-resisting flame resistant material, are prevented because of the heating of experiment lithium battery, burning
Caused fire damage；
4) device meets the external short circuit test requirements document of a variety of lithium battery examination criterias both at home and abroad；
5) device volume is small, is convenient for carrying, is easy to popularize.
Specific test method comprises the following steps：
A), lithium battery is charged according to test method as defined in coherent detection standard, is placed on coherent detection standard regulation
Environment temperature in, the positive/negative external terminal of lithium battery is connected with the both positive and negative polarity shorting member of external short circuit experimental rig respectively
Connect, and ensure to be connected firmly；
B), the thermocouple of 2 monitoring temperature is mounted on the shell of lithium battery both positive and negative polarity annex respectively, checks that temperature shows
Show the temperature value T1 and T2 on device, it is ensured that the thermocouple of 2 monitoring temperature is working properly；
C the test lead of monitoring voltage, the magnitude of voltage U checked on voltage display, it is ensured that the data of voltage monitoring), are connected
Normally；
D the test switch of external short circuit experimental rig), is acted so that the both positive and negative polarity short circuit of lithium battery, causing lithium battery just
The external short circuit of negative pole；
E it), will test and terminate according to one of following two conditions：
(1) experiment carries out a period of time, the temperature value checked on temperature indicator, and records the peak temperature of experiment, when
When lower than peak temperature 20% is dropped at a temperature of lithium battery, the test switch of external short circuit experimental rig, external short circuit are closed
Off-test；Or
(2) experiment carries out a period of time, the magnitude of voltage checked on voltage display, the temperature checked on temperature indicator
Value, when the magnitude of voltage of lithium battery is less than 0.2V, and/or lithium battery temperature is test ambient temperature ± 10 DEG C, close outside short
The test switch of road test experiment device, external short circuit off-test.
Here description of the invention and application are illustrative, are not wishing to limit the scope of the invention to above-described embodiment
In.The deformation and change of embodiments disclosed herein are possible, real for those skilled in the art
The replacement and equivalent various parts for applying example are known.It should be appreciated by the person skilled in the art that the present invention is not being departed from
Spirit or essential characteristics in the case of, the present invention can in other forms, structure, arrangement, ratio, and with other components,
Material and part are realized.In the case where not departing from scope and spirit of the present invention, embodiments disclosed herein can be entered
The other deformations of row and change.
Claims (1)
1. a kind of universal single lithium battery external short circuit test method, comprises the following steps：
A), lithium battery is charged according to test method as defined in coherent detection standard, is placed on ring as defined in coherent detection standard
In the temperature of border, the positive/negative external terminal of lithium battery is connected with the both positive and negative polarity shorting member of external short circuit experimental rig respectively, and
Ensure to be connected firmly；
B), the thermocouple of 2 monitoring temperature is mounted on the shell of lithium battery both positive and negative polarity annex respectively, checks temperature indicator
On temperature value T1 and T2, it is ensured that 2 monitoring temperature thermocouples it is working properly；
C the test lead of monitoring voltage, the magnitude of voltage U checked on voltage display, it is ensured that the data of voltage monitoring are normal), are connected；
D the test switch of external short circuit experimental rig), is opened so that the both positive and negative polarity short circuit of lithium battery, cause lithium battery both positive and negative polarity
External short circuit；
E it), will test and terminate according to one of following two conditions：
(1) experiment carries out a period of time, the temperature value checked on temperature indicator, and records the peak temperature of experiment, when lithium electricity
When lower than peak temperature 20% is dropped at a temperature of pond, the test switch of external short circuit experimental rig, external short circuit experiment are closed
Terminate；Or
(2) experiment is carried out a period of time, the magnitude of voltage U checked on voltage display, the temperature value checked on temperature indicator, when
Magnitude of voltage U is less than 0.2V, and when T1 or T2 are test ambient temperature ± 10 DEG C, the test for closing external short circuit experimental rig is opened
Close, external short circuit off-test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710856669.4A CN107576917A (en) | 2017-09-21 | 2017-09-21 | A kind of universal single lithium battery external short circuit test method |
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| CN201710856669.4A CN107576917A (en) | 2017-09-21 | 2017-09-21 | A kind of universal single lithium battery external short circuit test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738811A (en) * | 2019-01-28 | 2019-05-10 | 东北大学 | Li-ion batteries piles external short circuit method for diagnosing faults based on twin-stage model prediction |
| CN112946491A (en) * | 2021-01-22 | 2021-06-11 | 合肥国轩高科动力能源有限公司 | Device and method for testing safety of ternary lithium ion battery |
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| JP2010256210A (en) * | 2009-04-27 | 2010-11-11 | Furukawa Battery Co Ltd:The | Method of inspection short-circuiting of control valve type lead storage battery and short-circuiting inspection apparatus of the control valve type lead storage battery |
| CN203433095U (en) * | 2013-07-15 | 2014-02-12 | 威凯检测技术有限公司 | Program control type power battery heavy-current short circuit testing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109738811A (en) * | 2019-01-28 | 2019-05-10 | 东北大学 | Li-ion batteries piles external short circuit method for diagnosing faults based on twin-stage model prediction |
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| CN112946491A (en) * | 2021-01-22 | 2021-06-11 | 合肥国轩高科动力能源有限公司 | Device and method for testing safety of ternary lithium ion battery |
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