CN106025404B - Lithium ion chargeable battery internal short-circuit early warning method for detecting - Google Patents
Lithium ion chargeable battery internal short-circuit early warning method for detecting Download PDFInfo
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- CN106025404B CN106025404B CN201610584330.9A CN201610584330A CN106025404B CN 106025404 B CN106025404 B CN 106025404B CN 201610584330 A CN201610584330 A CN 201610584330A CN 106025404 B CN106025404 B CN 106025404B
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- lithium ion
- battery
- internal short
- ion chargeable
- characteristic parameter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
Lithium ion chargeable battery internal short-circuit early warning method for detecting, it can be advantageously implemented by the detecting of battery internal short-circuit risk and alarm, it reminds host system to make before detonation occurs to reduce harm or avoid detonation or avoid the processing of harm, it is characterized in that, for the series-connected cell group including several lithium ion chargeable batteries, during the series battery charge, characteristic parameter by measuring each lithium ion chargeable battery obtains characteristic parameter group corresponding with several described lithium ion chargeable batteries, if having the >=characteristic parameter of predetermined upper threshold value in several characteristic parameters in the characteristic parameter group, there is≤the characteristic parameter of predetermined lower threshold value simultaneously, then determine the battery internal short-circuit risk for occurring needing to warn.
Description
Technical field
The present invention relates to the explosion-proof early warning detection techniques of lithium ion chargeable battery, especially a kind of to be used for series-connected cell
The lithium ion chargeable battery internal short-circuit early warning method for detecting of group, can be advantageously implemented by the detecting of battery internal short-circuit risk
And alarm, it reminds host system to make before detonation occurs and reduces harm or avoid detonation or avoid the processing of harm.
Background technique
Lithium ion chargeable battery energy density is big, occurs that thermal runaway easily occurs when internal short-circuit.Inside battery electrode insulation
Interlayer is added with thermal expansion diaphragm, to pull open the distance between electrode using expansion in overheat.In spite of such scheme, electricity
The main reason for thermal runaway caused by the internal short-circuit of pond is still battery detonation.In terms of the test situation of report, from observing internal short-circuit
Feature generally postpones tens of seconds to dozens of minutes to detonation occurs.If internal short-circuit feature can be recognized, host system is also sometimes
Between make a response with reduce harm.Although detonation is likely to occur in any time, inventors believe that, battery internal short-circuit is general
Occur during the charging process, due to occurring insulation degradation when inside battery electric field gradually becomes strong, triggering mutation is so as to cause interior
Short circuit occurs；And in normal discharge, due to reducing along with inside battery electric field, so being not easy triggering mutation.Through
Inventor's retrieval not currently exists and carries out internal short-circuit detecting to the lithium ion chargeable battery in series-connected cell group with early warning
Technical solution.
Summary of the invention
The present invention is in view of the deficiencies in the prior art or insufficient, and providing a kind of lithium ion for series-connected cell group can
Rechargeable battery internal short-circuit early warning method for detecting, can be advantageously implemented and alarm by the detecting of battery internal short-circuit risk, be mentioned
Host system of waking up is made before detonation occurs to be reduced harm or avoids detonation or avoid the processing of harm.
Technical solution of the present invention is as follows:
Lithium ion chargeable battery internal short-circuit early warning method for detecting, which is characterized in that can for including several lithium ions
The series-connected cell group of rechargeable battery, during the series battery charge, by measuring each lithium ion chargeable battery
Characteristic parameter obtains characteristic parameter group corresponding with several described lithium ion chargeable batteries, if the characteristic parameter group
There is >=the characteristic parameter of predetermined upper threshold value in several interior characteristic parameters, while there is the≤feature of predetermined lower threshold value
Parameter, it is determined that the battery internal short-circuit risk for needing to warn occur.
The characteristic parameter is cell voltage parameter.
The characteristic parameter is battery temperature parameter.
The characteristic parameter is battery temperature rate of climb parameter.
The warning includes audible alarm, video alarm, light warning and/or audio-video alarm.
The measurement includes measuring device, and the warning includes warning device, the warning device and the measuring device
It is connected.
The measurement of the cell voltage parameter uses battery voltage detector.
The measurement of the battery temperature parameter uses device for measuring temperature of battery.
The measurement of the battery temperature rate of climb parameter uses battery temperature rate of climb measuring device.
The measuring device is digital measuring device.
The technology of the present invention effect is as follows: lithium ion chargeable battery internal short-circuit early warning method for detecting of the present invention is suitable for series connection
The case where battery pack, can be advantageously implemented and alarm by carrying out the monitoring of internal short-circuit feature during charging, remind host
System is made before detonation occurs to be reduced harm or avoids detonation or avoid the processing of harm.In the battery pack for having equal balance system
In, check with the voltage difference for organizing other batteries, other cell voltages are higher and in certain batteries brownout can be used to identify
Short-circuit risks.Whether using two threshold values, checking has cell voltage to be more than high threshold and have battery low simultaneously in series-connected cell group
It is a reliable practical approach in the configuration of Low threshold, and using this configuration as the method for assert battery internal short-circuit risk.
It can also be by measuring the temperature of every batteries, and temperature rapid increase, is more than other battery temperatures detecting certain batteries
Internal short-circuit risk is assert when the rate of climb, this is also a reliable practical approach.
Specific embodiment
Below with reference to examples illustrate the present invention.
Battery internal short-circuit refers to that lithium ion chargeable battery built-in electrical insulation structure destroys the situation for short circuit occur.Monitor battery
Voltage, when finding internal short-circuit performance and alarm, prompting host system make the processing for reducing harm before detonation occurs.
Inventors believe that battery internal short-circuit typically occurs in charging process, due to gradually becoming in inside battery electric field
Occurs insulation degradation when strong, triggering mutation is so as to cause internal short-circuit generation；And in normal discharge, due to along with battery
Internal electric field reduces, so being not easy triggering mutation.The present invention is suitable for the case where series-connected cell group, while only during charging
Carry out the monitoring of internal short-circuit feature.In maintaining good balanced battery pack, when the voltage of percentage of batteries is more than certain during charging
Threshold value after, if it find that the voltage for having cell voltage to be substantially less than other batteries, then judging the battery, there are internal short-circuit risks.
When cell voltage is lower, there may be larger pressure difference between the different batteries in same series-connected cell group, but internal short-circuit risk at this moment
It is low.It can be by measuring the temperature of every batteries, and temperature rapid increase, is more than other battery temperatures detecting certain batteries
Battery internal short-circuit risk is assert when the rate of climb.
Lithium ion chargeable battery internal short-circuit early warning method for detecting, which is characterized in that can for including several lithium ions
The series-connected cell group of rechargeable battery, during the series battery charge, by measuring each lithium ion chargeable battery
Characteristic parameter obtains characteristic parameter group corresponding with several described lithium ion chargeable batteries, if the characteristic parameter group
There is >=the characteristic parameter of predetermined upper threshold value in several interior characteristic parameters, while there is the≤feature of predetermined lower threshold value
Parameter, it is determined that the battery internal short-circuit risk for needing to warn occur.The characteristic parameter is cell voltage parameter.The feature ginseng
Number is battery temperature parameter.The characteristic parameter is battery temperature rate of climb parameter.The warning includes audible alarm, video
Alarm, light warning and/or audio-video alarm.The measurement includes measuring device, and the warning includes warning device, the report
Alarm device is connected with the measuring device.The measurement of the cell voltage parameter uses battery voltage detector.The electricity
The measurement of pond temperature parameter uses device for measuring temperature of battery.The measurement of the battery temperature rate of climb parameter uses battery temperature
Spend rate of climb measuring device.The measuring device is digital measuring device.
It is hereby stated that described above facilitate those skilled in the art understand that the invention, but not limit the present invention
The protection scope of creation.Any equivalent replacement described above, modification are improved without disengaging the invention substantive content
And/or delete numerous conform to the principle of simplicity and the implementation that carries out, each fall within the protection scope of the invention.
Claims (4)
1. lithium ion chargeable battery internal short-circuit early warning method for detecting, which is characterized in that can be filled for including several lithium ions
The series-connected cell group of battery, during the series battery charge, by the spy for measuring each lithium ion chargeable battery
Gain of parameter characteristic parameter group corresponding with several described lithium ion chargeable batteries is levied, if in the characteristic parameter group
Several characteristic parameters in there is >=the characteristic parameter of predetermined upper threshold value, while there is the≤feature ginseng of predetermined lower threshold value
Number, it is determined that the battery internal short-circuit risk for needing to warn occur；
The characteristic parameter is battery temperature rate of climb parameter；The measurement of the battery temperature rate of climb parameter uses battery
Rate of rise in temperature measuring device.
2. lithium ion chargeable battery internal short-circuit early warning method for detecting according to claim 1, which is characterized in that the police
Show and alarms including audible alarm, video alarm, light warning and/or audio-video.
3. lithium ion chargeable battery internal short-circuit early warning method for detecting according to claim 1, which is characterized in that the survey
Amount includes measuring device, and the warning includes warning device, and the warning device is connected with the measuring device.
4. lithium ion chargeable battery internal short-circuit early warning method for detecting according to claim 1, which is characterized in that the survey
Amount device is digital measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610584330.9A CN106025404B (en) | 2016-07-22 | 2016-07-22 | Lithium ion chargeable battery internal short-circuit early warning method for detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610584330.9A CN106025404B (en) | 2016-07-22 | 2016-07-22 | Lithium ion chargeable battery internal short-circuit early warning method for detecting |
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| CN106025404A CN106025404A (en) | 2016-10-12 |
| CN106025404B true CN106025404B (en) | 2019-10-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3467527B1 (en) | 2017-08-25 | 2022-05-04 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Terminal device, adapter, battery safety monitoring method and monitoring system |
| CN110276925B (en) * | 2019-06-28 | 2021-10-01 | 华侨大学 | Lithium battery short circuit thermal runaway fire detection and early warning method |
| CN110635182B (en) * | 2019-09-06 | 2021-08-17 | Oppo广东移动通信有限公司 | Battery thermal runaway early warning method and device, electronic equipment and storage medium |
| CN111142030B (en) * | 2019-12-30 | 2022-02-25 | Oppo广东移动通信有限公司 | Method, device and equipment for detecting internal short-circuit current and readable storage medium |
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| JP2009049005A (en) * | 2007-07-26 | 2009-03-05 | Panasonic Corp | Device and method for battery internal short circuit detection, battery pack, and electronic device system |
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