CN103674454B - Battery-pack leakage-liquid detection system - Google Patents
Battery-pack leakage-liquid detection system Download PDFInfo
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- CN103674454B CN103674454B CN201210356447.3A CN201210356447A CN103674454B CN 103674454 B CN103674454 B CN 103674454B CN 201210356447 A CN201210356447 A CN 201210356447A CN 103674454 B CN103674454 B CN 103674454B
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Abstract
The present invention provides a kind of battery-pack leakage-liquid detection system, it includes battery pack, accommodates metal battery case, input power, load and the voltage check device of battery pack, battery pack, input power, load and battery case shell are connected in series, and the voltage check device is parallel to metal battery case or load.Using after the technical scheme that the present invention is provided, can detect when battery pack occurs leakage, and simple calculating can be passed through and calculate the battery unit that leakage occurs exactly, easily facilitate replacing battery unit；System is designed based on galvanic cell group, can be increased battery-pack leakage-liquid detection system in the case where galvanic cell group structure is not changed, is easy to promote the use of, simple to operate, as a result accurately.
Description
Technical field
The present invention relates to a kind of battery pack detecting system, especially a kind of battery-pack leakage-liquid detection system.
Background technology
Polymer flexible packaging lithium ion battery has that voltage is high, specific energy is high, recycle often, storage time length etc.
Advantage, after forming battery module using several battery cell connection in series-parallel, can be widely applied to electric automobile, electric bicycle
And in terms of the big-and-middle-sized electrical equipment such as electric tool.
In prior art, battery module is contained in battery case, due to needing to take into account the heat-sinking capability of battery case and stablizing
Property, it is general to adopt metal battery case as the container for accommodating battery module；Lithium ion battery due to the defect that itself exists or
The unreasonable of fixed structure is installed, after some time of use, the failure that might have leakage occurs, the electrolysis for spilling
Liquid is a kind of conducting organic material, when electrolyte is leaked on battery tank wall, battery pack and battery case is turned on, battery case is caused
Powered, the high-tension electricity of battery pack may cause danger to the passenger in electric automobile and electronic device, cause potential safety hazard.
The content of the invention
It is an object of the invention to provide a kind of system of detection battery pack leakage.
It is that, up to above-mentioned purpose, the present invention provides a kind of battery-pack leakage-liquid detection system, and it includes battery pack, accommodates battery
Metal battery case, input power, load and the voltage check device organized, battery pack, input power, load and battery case shell
It is connected in series, the voltage check device is parallel to metal battery case or load.
Battery pack, input power, load and battery case shell are connected in series, if battery pack is working properly not to occur leakage
Liquid, then this circuit be considered as open circuit, not or be only able to detect the voltage of very little；If there is leakage in battery pack operation irregularity,
The magnitude of voltage of voltage check device detection is higher, is the pressure of battery cell of the input supply voltage plus leakage and maximum potential
Difference.
Connect in series circuit input power, be easy to calculate the position at the battery cell of battery pack internal leakage,
The magnitude of voltage of voltage check device detection is the pressure reduction of battery cell of the input supply voltage plus leakage and maximum potential.
Preferably, the voltage check device is parallel to load.
Voltage check device is parallel to load and causes voltage detecting dress by impact of the load reduction input power to battery pack
Put the voltage for measuring more accurate.
Preferably, the load includes resistance.
Using resistance as load, assembling is simple, and reliability is high.
Preferably, the resistance includes the resistance that resistance is 50k Ω to 300k Ω.
From the resistance that resistance is 50k Ω to 300k Ω, it is possible to decrease impact of the input power to battery pack, while also ensureing
The accuracy of voltage check device reading.
Preferably, the resistance includes the resistance that resistance is 100k Ω.
It is the resistance of 100k Ω from resistance, can further reduces impact of the input power to battery pack.
Preferably, the positive terminal of input power arranges unilateral diode on the series circuit.
On series circuit, the positive terminal of input power arranges unilateral diode, can prevent the high voltage of battery pack to defeated
Enter the impact of power supply, prevent input power from being burnt out by the reversing the current of battery pack.
Preferably, arranging detection switch on the series circuit.
As leakage situation is a generating process, will not occur suddenly, so need not very frequently if detection leakage
Numerous detection, the detection every a period of time just can be with；Occlusion detection is switched when detection is needed（Anode during detection
Casing can be connected to by input power）, it is not necessary to just disconnect when detection, it is ensured that battery and casing are fully disconnected.
Using after the technical scheme that the present invention is provided, can detect when battery pack occurs leakage, and can be with
The battery unit that leakage occurs is calculated exactly by simple calculating, replacing battery unit is easily facilitated；System is based on former electricity
Pond group design, can increase battery-pack leakage-liquid detection system in the case where galvanic cell group structure is not changed, be easy to promote the use of,
It is simple to operate, as a result accurately.
Description of the drawings
Fig. 1 is battery-pack leakage-liquid detection system electrical schematics.
Wherein, 1, battery case, 11, battery pack, 2, input power, 3, load, 4, voltage check device, 5, unidirectional two pole
Pipe, 6, detection switch.
Embodiment
Below in conjunction with the accompanying drawings the present invention is elaborated.
Embodiment 1
As shown in figure 1, the battery-pack leakage-liquid detection system that the present invention is provided, it includes metal battery case 1, battery pack
11st, input power 2, load 3, voltage check device 4, unilateral diode 5 and detection switch 6, first by battery pack 11, battery case
1st, input power 2, load 3, voltage check device 4 and unilateral diode 5 are cascaded, and load 3 is from resistance for 50k Ω's
Resistance；Occlusion detection switch 6, when battery pack 11 is working properly, and leakage does not occur, then this circuit is considered as open circuit, voltage detecting
Device 4 does not have reading or is only able to detect the voltage of very little；If there is leakage, voltage detecting dress in 11 operation irregularity of battery pack
The reading for putting 4 detections shows that magnitude of voltage is higher, has battery unit to there occurs leakage, defective insulation in now showing battery pack 11.
Embodiment 2
As shown in figure 1, the battery-pack leakage-liquid detection system that the present invention is provided, it includes metal battery case 1, battery pack
11st, input power 2, load 3,4 unilateral diode 5 of voltage check device and detection switch 6, first by battery pack 11, battery case
1st, input power 2, load 3, voltage check device 4 and unilateral diode 5 are cascaded, and load 3 is 100k Ω from resistance
Resistance；Occlusion detection switch 6, when battery pack 11 is working properly, and leakage does not occur, then this circuit is considered as open circuit, voltage inspection
Surveying device 4 does not have reading or is only able to detect the voltage of very little；If there is leakage, voltage detecting in 11 operation irregularity of battery pack
The reading of the detection of device 4 shows that magnitude of voltage is higher, has battery unit to there occurs leakage in now showing battery pack 11, and insulation is not
It is good.
Embodiment 3
As shown in figure 1, the battery-pack leakage-liquid detection system that the present invention is provided, it includes metal battery case 1, battery pack
11st, input power 2, load 3,4 unilateral diode 5 of voltage check device and detection switch 6, first by battery pack 11, battery case
1st, input power 2, load 3, voltage check device 4 and unilateral diode 5 are cascaded, and load 3 is 300k Ω from resistance
Resistance；Occlusion detection switch 6, when battery pack 11 is working properly, and leakage does not occur, then this circuit is considered as open circuit, voltage inspection
Surveying device 4 does not have reading or is only able to detect the voltage of very little；If there is leakage, voltage detecting in 11 operation irregularity of battery pack
The reading of the detection of device 4 shows that magnitude of voltage is higher, has battery unit to there occurs leakage in now showing battery pack 11, and insulation is not
It is good.
Claims (5)
1. a kind of battery-pack leakage-liquid detection system, including battery pack, the metal battery case for accommodating battery pack, input power,
Load and voltage check device, it is characterised in that：Battery pack, input power, load and battery case shell are connected in series, the electricity
Pressure detection means is parallel to load, and the load includes resistance.
2. battery-pack leakage-liquid detection system according to claim 1, it is characterised in that：The resistance includes that resistance is 50k
The resistance of Ω to 300k Ω.
3. battery-pack leakage-liquid detection system according to claim 2, it is characterised in that：The resistance includes that resistance is 100k
The resistance of Ω.
4. battery-pack leakage-liquid detection system according to claim 1, it is characterised in that：Input power on the series circuit
Positive terminal arrange unilateral diode.
5. battery-pack leakage-liquid detection system according to claim 1, it is characterised in that：Detection is set on the series circuit
Switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210356447.3A CN103674454B (en) | 2012-09-24 | 2012-09-24 | Battery-pack leakage-liquid detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210356447.3A CN103674454B (en) | 2012-09-24 | 2012-09-24 | Battery-pack leakage-liquid detection system |
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| Publication Number | Publication Date |
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| CN103674454A CN103674454A (en) | 2014-03-26 |
| CN103674454B true CN103674454B (en) | 2017-03-29 |
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| CN201210356447.3A Active CN103674454B (en) | 2012-09-24 | 2012-09-24 | Battery-pack leakage-liquid detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108980634A (en) * | 2017-06-01 | 2018-12-11 | 河北国盛管道装备制造有限公司 | Leakage detecting system for water conveyance pipeline |
| CN108075196A (en) * | 2017-11-13 | 2018-05-25 | 苏州工业园区职业技术学院 | A kind of battery leakage detection device |
| CN110495012A (en) * | 2017-11-22 | 2019-11-22 | Tdk株式会社 | Battery pack |
| CN108318827B (en) * | 2018-03-07 | 2023-11-28 | 华霆（合肥）动力技术有限公司 | Liquid leakage detection device, system and electric vehicle |
| CN108808134A (en) * | 2018-05-16 | 2018-11-13 | 河南新太行电源股份有限公司 | A kind of power cell of vehicle leakage safety detecting system and its control method |
| CN109813507B (en) * | 2019-01-30 | 2024-06-11 | 无锡格林司通自动化设备股份有限公司 | Soft package battery leakage inspection method and mechanism |
| CN110207913A (en) * | 2019-07-03 | 2019-09-06 | 北京嘀嘀无限科技发展有限公司 | Hermetization testing method, device and storage medium, the automobile of battery pack |
| DE102020004590A1 (en) | 2020-07-29 | 2020-09-24 | FEV Group GmbH | System for the detection of liquids in batteries |
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Address after: 313000 Huzhou economic and Technological Development Zone, Zhejiang, Hung Fung Road, No. 2198 Applicant after: MICROVAST POWER SYSTEMS Co.,Ltd. Address before: 313000 Zhejiang Province, Huzhou City Road No. 1555 sunny Industrial Science and Technology Park 1 Applicant before: MICROVAST POWER SYSTEMS Co.,Ltd. |
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Effective date of registration: 20230802 Address after: 12603 Southwest Avenue, 300 blocks, Stanford, Texas, United States Patentee after: MICROVAST, Inc. Address before: 313000 No. 2198 Hongfeng Road, Huzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: MICROVAST POWER SYSTEMS Co.,Ltd. |
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