CN108919131A - The detection determination method of battery micro-short circuit - Google Patents
The detection determination method of battery micro-short circuit Download PDFInfo
- Publication number
- CN108919131A CN108919131A CN201810697331.3A CN201810697331A CN108919131A CN 108919131 A CN108919131 A CN 108919131A CN 201810697331 A CN201810697331 A CN 201810697331A CN 108919131 A CN108919131 A CN 108919131A
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- battery
- short circuit
- micro
- resistance
- capacitor
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims abstract description 37
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 229910052987 metal hydride Inorganic materials 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of detection determination methods of battery micro-short circuit,Non- intercell is fixedly mounted in the battery stationary fixture of battery micro-short circuit detection device and is pressurizeed to it,Power on and charges to capacitor,After the full electricity of capacitor,It disconnects power supply and controls capacitor and spark to non-intercell,During capacitor sparks,Voltage collecting device detects the voltage value of resistance in acquisition one-shot battery micro-short circuit detection device at interval of certain time and voltage value is transmitted in PLC,The instantaneous current value by resistance is calculated in PLC,And it will be compared by the maximum value of the instantaneous current value of resistance and the standard current value of setting,If being more than or equal to the standard current value of setting by the maximum value of the instantaneous current value of resistance,Then determine the non-intercell for micro-short circuit battery,Otherwise determine that the non-intercell is spec battery.The method of the present invention, simple possible can fast and accurately come out micro-short circuit battery identification.
Description
Technical field
The present invention relates to a kind of detection determination methods of battery micro-short circuit.
Background technique
In field of batteries, during anode, cathode, membrane winding, positive and negative electrode occasional generates burr, or has dust
Equal foreign matters are mixed into, the battery micro-short circuit after leading to winding.The indexs such as the voltage of micro-short circuit battery and normal battery no significant difference,
It is difficult to be found in early period, usually only just can slowly embodies in use for some time.In power battery field, often
A, even thousands of a batteries up to a hundred connect, compose in parallel energy packet, as long as wherein there is a monomer micro-short circuit, entire energy occur
The service life of amount packet all can be impacted, and conventional method is usually the side such as to accelerate, vibrate by high temperature after the completion of battery charging and discharging
Method selects micro-short circuit battery, and such way makes battery cost of manufacture higher, and the period is longer.In order to examine in advance
Survey determine battery whether micro-short circuit, avoid as far as possible the micro-short circuit battery occurred by winding process flow into subsequent handling be made
Finished battery reduces battery cost of manufacture, reduces the risk of post-production energy content of battery packet, is badly in need of solving power battery as early as possible
This project.
Summary of the invention
The present invention is intended to provide a kind of detection determination method of battery micro-short circuit, method simple possible, after can detect winding
Battery whether micro-short circuit, can avoid as far as possible winding micro-short circuit battery flow into subsequent handling.
The present invention is realized by following scheme：
Non- intercell is fixedly mounted on battery micro-short circuit detection device by a kind of detection determination method of battery micro-short circuit
Battery stationary fixture in and pressurize to non-intercell, powered on later to the electricity in battery micro-short circuit detection device
Appearance charges, and after capacitor is fully charged, disconnects power supply and controls capacitor and spark to non-intercell, in capacitor wink
Between in discharge process, voltage collecting device detects resistance in acquisition one-shot battery micro-short circuit detection device at interval of certain time
The voltage value U of resistance is simultaneously transmitted in PLC by voltage value U, and the moment electricity by resistance is calculated according to I=U/R in PLC
Flow valuve I, R are the resistance value of resistance, and will be carried out pair by the standard current value of the maximum value of the instantaneous current value of resistance and setting
Than determining the non-intercell if being more than or equal to the standard current value of setting by the maximum value of the instantaneous current value of resistance
For micro-short circuit battery, otherwise determine that the non-intercell is spec battery；
The battery micro-short circuit detection device includes capacitor and battery stationary fixture, and the positive terminal of the capacitor passes through first
Switch is connected with the positive terminal of power supply, and the positive terminal of the capacitor passes through the positive terminal phase of second switch and battery stationary fixture
Connection, the negative pole end of the capacitor are connected with the negative pole end of the negative pole end of power supply, battery stationary fixture respectively, in the negative of capacitor
It is extremely serially connected with resistance between the negative pole end of battery stationary fixture, on the resistance and is connected to voltage check device, the electricity
Pressure detection device is connected with PLC, and PLC controls the disconnection and closure of first switch, second switch.
Further, the time control that the capacitor sparks to non-intercell is 0.01ms~100ms.
Further, the resistor current value in the current detecting acquisition device detection acquisition battery micro-short circuit detection device
Interval time be 10~200 μ s.
Further, the resistance value of resistance is 1~20 Ω in the battery micro-short circuit detection device.
Further, the pressure value pressurizeed to non-intercell is in 5N or more.To the pressurization of non-intercell
Practical mode is to be pressurizeed by cylinder to battery stationary fixture, to realize that battery stationary fixture adds non-intercell
Pressure.
Further, battery type is different, and the standard current value of setting is different, for nickel-metal hydride battery, the standard electric of setting
Flow valuve is 1~10A；For lithium battery, the standard current value set is 2~14A.The same category different model battery, setting
Standard current value be also slightly different, can according to test of many times data specifically determine obtain.
Power supply in battery micro-short circuit detection device can be 110V constant current regulated power supply, 220V constant current regulated power supply or 380V
Constant current regulated power supply, different according to the type of power supply, the capacitor fully charged time is also different, and capacitor charging time can be according to specific
Situation is adjusted, and the fully charged time general control of capacitor is 10ms~100ms.
Mounting means of the non-intercell in battery stationary fixture be：The positive terminal and battery fixing clamp of non-intercell
The positive end in contact of tool, the negative pole end of non-intercell and the cathode end in contact of battery stationary fixture.
The detection determination method of battery micro-short circuit of the invention, method simple possible, the battery micro-short circuit detection used
The structure of device is simple, low manufacture cost, convenient for multiple processes in battery production early period carry out using, can quickly, it is accurate
Micro-short circuit battery identification is come out, avoid micro-short circuit battery flow into subsequent handling, to reduce the ratio of finished battery micro-short circuit
Example improves the quality of finished battery, reduces battery cost of manufacture.Meanwhile the identified micro-short circuit battery that detected, for skill
The timely dissection and analysis reason of art personnel finds out corresponding solution in time, and product quality and quality is continuously improved, and is promoted and is produced
The competitiveness of product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of battery micro-short circuit detection device in embodiment 1.
Specific embodiment
The invention will be further described with reference to embodiments, but the invention is not limited to the statements of embodiment.
Embodiment 1
A kind of detection determination method of battery micro-short circuit, will non-fluid injection ni-mh D6000 battery to be fixedly mounted on battery micro- short
It pressurizes in the battery stationary fixture of road detection device and to non-intercell, the positive terminal and battery of non-fluid injection nickel-metal hydride battery
The positive end in contact of stationary fixture, the negative pole end of non-fluid injection nickel-metal hydride battery and the cathode end in contact of battery stationary fixture, pass through gas
Cylinder pressurizes to battery stationary fixture, to realize that battery stationary fixture carries out the pressure of pressurization and its pressurization to non-intercell
For force value in 5N or more, the constant current regulated power supply for connecting 380V later charges to the capacitor in battery micro-short circuit detection device
46ms disconnects the constant current regulated power supply of 380V and controls capacitor and spark to non-intercell after capacitor is fully charged
20ms, during capacitor sparks, voltage collecting device detects acquisition one-shot battery micro-short circuit detection dress at interval of 50 μ s
It sets the voltage value U of resistance and the voltage value U of resistance is transmitted in PLC, be calculated in PLC according to I=U/R and pass through electricity
The instantaneous current value I, R of resistance are the resistance value of resistance, and will pass through the standard electric of the maximum value of the instantaneous current value I of resistance and setting
Flow valuve compares, and the standard current value set is 3A, if being more than or equal to setting by the maximum value of the instantaneous current value of resistance
Standard current value, then determine the non-intercell for micro-short circuit battery, otherwise determine that the non-intercell is spec battery.
As shown in Figure 1, battery micro-short circuit detection device includes capacitor C, resistance 6 and battery stationary fixture 1, capacitor C is just
Extremely it is connected by first switch 2 with the positive terminal of the constant current regulated power supply 4 of 380V, the positive terminal of capacitor C is opened by second
It closes and 3 is connected with the positive terminal of battery stationary fixture 1, the negative pole end of the capacitor C cathode with the constant current regulated power supply of 380V 4 respectively
End, battery stationary fixture 1 negative pole end be connected, concatenated between the negative pole end and the negative pole end of battery stationary fixture 1 of capacitor C
There is resistance 6, the resistance value of resistance 6 is 10 Ω, on resistance 6 and is connected to voltage check device 5, voltage check device 5 is connected with PLC
(not illustrating PLC in figure), PLC control the disconnection and closure of first switch 2, second switch 3.
Embodiment 2
A kind of detection judgement side of the battery micro-short circuit of the detection determination method of battery micro-short circuit, step and embodiment 1
The step of method, is essentially identical, the difference is that：The model ni-mh D7000 of non-fluid injection nickel-metal hydride battery, the inspection of battery micro-short circuit
The constant current regulated power supply that the power supply surveyed in device is 220V, capacitor charging time 80ms, capacitor instantaneous discharge time are 25ms,
The standard current value set is 2.5A.
Embodiment 3
A kind of detection judgement side of the battery micro-short circuit of the detection determination method of battery micro-short circuit, step and embodiment 1
The step of method, is essentially identical, the difference is that：Battery be non-fluid injection lithium battery 32650, the standard current value set as
7A。
Claims (6)
1. a kind of detection determination method of battery micro-short circuit, it is characterised in that：It is micro- short that non-intercell is fixedly mounted on battery
It pressurizes in the battery stationary fixture of road detection device and to non-intercell, powers on later and battery micro-short circuit is detected
Capacitor in device charges, and after capacitor is fully charged, disconnects power supply and controls capacitor and put to non-intercell progress moment
Electricity, during capacitor sparks, voltage collecting device detects acquisition one-shot battery micro-short circuit detection at interval of certain time
The voltage value U of resistance and the voltage value U of resistance is transmitted in PLC in device, is calculated and is passed through according to I=U/R in PLC
The instantaneous current value I, R of resistance are the resistance value of resistance, and will pass through the standard of the maximum value of the instantaneous current value of resistance and setting
Current value compares, if being more than or equal to the standard current value of setting by the maximum value of the instantaneous current value of resistance, determines
The non-intercell is micro-short circuit battery, otherwise determines that the non-intercell is spec battery；
The battery micro-short circuit detection device includes capacitor and battery stationary fixture, and the positive terminal of the capacitor passes through first switch
It is connected with the positive terminal of power supply, the positive terminal of the capacitor is connected by second switch with the positive terminal of battery stationary fixture
It connects, the negative pole end of the capacitor is connected with the negative pole end of the negative pole end of power supply, battery stationary fixture respectively, in the cathode of capacitor
It holds and is serially connected with resistance between the negative pole end of battery stationary fixture, on the resistance and be connected to voltage check device, the voltage
Detection device is connected with PLC, and PLC controls the disconnection and closure of first switch, second switch.
2. the detection determination method of battery micro-short circuit as described in claim 1, it is characterised in that：The capacitor is to non-fluid injection electricity
The time control that pond sparks is 0.01ms~100ms.
3. the detection determination method of battery micro-short circuit as claimed in claim 2, it is characterised in that：The current detecting acquisition dress
The interval time for setting the resistor current value in detection acquisition battery micro-short circuit detection device is 10~200 μ s.
4. the detection determination method of battery micro-short circuit as described in claim 1, it is characterised in that：The battery micro-short circuit detection
The resistance value of resistance is 1~20 Ω in device.
5. the detection determination method of battery micro-short circuit as described in claim 1, it is characterised in that：It is described to non-intercell into
The pressure value of row pressurization is in 5N or more.
6. the detection determination method of the battery micro-short circuit as described in Claims 1 to 5 is any, it is characterised in that：Battery type is not
Together, the standard current value of setting is different, and for nickel-metal hydride battery, the standard current value set is 1~10A；For lithium battery, setting
Standard current value be 2~14A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810697331.3A CN108919131A (en) | 2018-06-29 | 2018-06-29 | The detection determination method of battery micro-short circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810697331.3A CN108919131A (en) | 2018-06-29 | 2018-06-29 | The detection determination method of battery micro-short circuit |
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| CN108919131A true CN108919131A (en) | 2018-11-30 |
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| CN201810697331.3A Pending CN108919131A (en) | 2018-06-29 | 2018-06-29 | The detection determination method of battery micro-short circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336346A (en) * | 2019-06-26 | 2019-10-15 | 南京中感微电子有限公司 | Battery protecting circuit with micro-short circuit detection |
| CN110824372A (en) * | 2019-11-25 | 2020-02-21 | Oppo广东移动通信有限公司 | Method and equipment for judging short circuit in battery and electronic equipment |
| CN111722129A (en) * | 2020-06-01 | 2020-09-29 | 国联汽车动力电池研究院有限责任公司 | A kind of battery micro-short circuit detection method and system |
| CN114035081A (en) * | 2021-12-07 | 2022-02-11 | 青岛锐捷智能仪器有限公司 | Test method for accurately identifying micro-short circuit problem of battery cell before liquid injection |
| CN114374003A (en) * | 2021-12-13 | 2022-04-19 | 安徽力普拉斯电源技术有限公司 | Method for identifying formation charging micro short circuit in deep cycle battery for two-wheeled vehicle |
| CN119044797A (en) * | 2024-10-30 | 2024-11-29 | 宁德时代新能源科技股份有限公司 | Method and device for judging short circuit position of battery cell, electronic equipment and medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110336346A (en) * | 2019-06-26 | 2019-10-15 | 南京中感微电子有限公司 | Battery protecting circuit with micro-short circuit detection |
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| CN114035081A (en) * | 2021-12-07 | 2022-02-11 | 青岛锐捷智能仪器有限公司 | Test method for accurately identifying micro-short circuit problem of battery cell before liquid injection |
| CN114374003A (en) * | 2021-12-13 | 2022-04-19 | 安徽力普拉斯电源技术有限公司 | Method for identifying formation charging micro short circuit in deep cycle battery for two-wheeled vehicle |
| CN114374003B (en) * | 2021-12-13 | 2024-04-19 | 安徽力普拉斯电源技术有限公司 | A method for identifying a charging micro short circuit in a deep cycle battery for a two-wheeled vehicle |
| CN119044797A (en) * | 2024-10-30 | 2024-11-29 | 宁德时代新能源科技股份有限公司 | Method and device for judging short circuit position of battery cell, electronic equipment and medium |
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Application publication date: 20181130 |
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