CN103674454A - Battery-pack leakage-liquid detection system - Google Patents
Battery-pack leakage-liquid detection system Download PDFInfo
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- CN103674454A CN103674454A CN201210356447.3A CN201210356447A CN103674454A CN 103674454 A CN103674454 A CN 103674454A CN 201210356447 A CN201210356447 A CN 201210356447A CN 103674454 A CN103674454 A CN 103674454A
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Abstract
The invention provides a battery-pack leakage-liquid detection system which includes a battery pack, a metal battery box which accommodates the battery pack, an input power supply, a load and a voltage detection device. The battery pack, the input power supply, the load and a casing of the battery box are connected serially. The voltage detection device is connected in parallel with the metal battery box or the load. Through adoption of the technical scheme, generation of leakage of the battery pack can be detected and a battery unit in which leakage is generated can be calculated accurately through simple calculation so that replacement of the battery unit is facilitated; and the battery-pack leakage-liquid detection system can be added into a system based on the design of an original battery pack under a condition that the structure of the original battery pack is not changed so that the battery-pack leakage-liquid detection system is convenient to promote and use, simple to operate and accurate in result.
Description
Technical field
The present invention relates to a kind of electric battery detection system, especially a kind of electric battery leakage detection system.
Background technology
Polymer flexible packaging lithium ion battery has the advantages such as voltage is high, specific energy is high, recycle often, storage time is long, after using several battery cell connection in series-parallel formation battery modules, can be widely used in the big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool.
In prior art, battery module is contained in battery case, owing to need to taking into account heat-sinking capability and the stability of battery case, generally adopts metal battery case as the container that holds battery module; Lithium ion battery is because the defect self existing or mount fixing structure is unreasonable, after the use through after a while, the inefficacy that may have leakage occurs, the electrolytic solution spilling is a kind of conduction organic material, electrolyte leakage on battery tank wall time, by electric battery and battery case conducting, causes battery case charged, the high-tension electricity of electric battery causes danger may to passenger and electron device in electric automobile, causes potential safety hazard.
Summary of the invention
The object of this invention is to provide a kind of system that detects electric battery leakage.
For reaching above-mentioned purpose, the invention provides a kind of electric battery leakage detection system, it comprises electric battery, accommodates metal battery case processed, input power, load and the voltage check device of electric battery, electric battery, input power, load and battery case shell are connected in series, and described voltage check device is parallel to metal battery case or load.
Electric battery, input power, load and battery case shell are connected in series, if electric battery is working properly leakage do not occur, and this circuit is considered as opening circuit, and does not have or very little voltage can only be detected; If electric battery operation irregularity generation leakage, the magnitude of voltage that voltage check device detects is higher, for input supply voltage adds the battery cell of leakage and the pressure reduction of maximum potential.
The input power of connecting in series circuit, is convenient to calculate the present position of battery cell of electric battery internal leakage, and the magnitude of voltage that voltage check device detects is that input supply voltage adds the battery cell of leakage and the pressure reduction of maximum potential.
As preferably, described voltage check device is parallel to load.
Load reduces the impact of input power on electric battery, voltage check device is parallel to the voltage that load records voltage check device more accurate.
As preferably, described load comprises resistance.
Use resistance as load, assembling is simple, and reliability is high.
As preferably, described resistance comprises that resistance is the resistance of 50k Ω to 300k Ω.
Selecting resistance is the resistance of 50k Ω to 300k Ω, can reduce the impact of input power on electric battery, has also guaranteed the accuracy of voltage check device reading simultaneously.
As preferably, described resistance comprises that resistance is the resistance of 100k Ω.
Selecting resistance is the resistance of 100k Ω, can further reduce the impact of input power on electric battery.
As preferably, on described series circuit, the positive terminal of input power arranges unilateral diode.
On series circuit, the positive terminal of input power arranges unilateral diode, can prevent the impact of the high voltage of electric battery on input power, prevents that input power from being burnt out by the inverse current of electric battery.
As preferably, on described series circuit, detector switch is set.
Because leakage situation is a generating process, can not occur suddenly, so detect the words of leakage, do not need to detect very frequently, every a period of time, detect just passable; When needs detect, with regard to occlusion detection switch (anode can be connected to casing by input power during detection), when not needing to detect, just do not disconnect, guarantee the disconnection completely of battery and casing.
After adopting technical scheme provided by the invention, can when electric battery generation leakage, detect, and can calculate exactly the battery unit that leakage occurs by simple calculating, more be convenient to change battery unit; System, based on the design of primary element group, can increase electric battery leakage detection system in the situation that not changing primary element group structure, is convenient to promote the use of, and simple to operate, result is accurate.
Accompanying drawing explanation
Fig. 1 is electric battery leakage detection system electrical schematics.
Wherein, 1, battery case, 11, electric battery, 2, input power, 3, load, 4, voltage check device, 5, unilateral diode, 6, detector switch.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
Embodiment 1
As shown in Figure 1, electric battery leakage detection system provided by the invention, it comprises metal battery case 1 processed, electric battery 11, input power 2, load 3, voltage check device 4, unilateral diode 5 and detector switch 6, first electric battery 11, battery case 1, input power 2, load 3, voltage check device 4 and unilateral diode 5 are cascaded, it is the resistance of 50k Ω that resistance is selected in load 3; Occlusion detection switch 6, when electric battery 11 is working properly while there is not leakage, this circuit is considered as opening circuit, and voltage check device 4 does not have reading or very little voltage can only be detected; If electric battery 11 operation irregularity generation leakages, the reading that voltage check device 4 detects shows that magnitude of voltage is higher, and now showing has battery unit that leakage has occurred in electric battery 11, defective insulation.
Embodiment 2
As shown in Figure 1, electric battery leakage detection system provided by the invention, it comprises metal battery case 1 processed, electric battery 11, input power 2, load 3, voltage check device 4 unilateral diodes 5 and detector switch 6, first electric battery 11, battery case 1, input power 2, load 3, voltage check device 4 and unilateral diode 5 are cascaded, it is the resistance of 100k Ω that resistance is selected in load 3; Occlusion detection switch 6, when electric battery 11 is working properly while there is not leakage, this circuit is considered as opening circuit, and voltage check device 4 does not have reading or very little voltage can only be detected; If electric battery 11 operation irregularity generation leakages, the reading that voltage check device 4 detects shows that magnitude of voltage is higher, and now showing has battery unit that leakage has occurred in electric battery 11, defective insulation.
Embodiment 3
As shown in Figure 1, electric battery leakage detection system provided by the invention, it comprises metal battery case 1 processed, electric battery 11, input power 2, load 3, voltage check device 4 unilateral diodes 5 and detector switch 6, first electric battery 11, battery case 1, input power 2, load 3, voltage check device 4 and unilateral diode 5 are cascaded, it is the resistance of 300k Ω that resistance is selected in load 3; Occlusion detection switch 6, when electric battery 11 is working properly while there is not leakage, this circuit is considered as opening circuit, and voltage check device 4 does not have reading or very little voltage can only be detected; If electric battery 11 operation irregularity generation leakages, the reading that voltage check device 4 detects shows that magnitude of voltage is higher, and now showing has battery unit that leakage has occurred in electric battery 11, defective insulation.
Claims (7)
1. an electric battery leakage detection system, comprise electric battery, accommodate metal battery case processed, input power, load and the voltage check device of electric battery, it is characterized in that: electric battery, input power, load and battery case shell are connected in series, and described voltage check device is parallel to metal battery case or load.
2. electric battery leakage detection system according to claim 1, is characterized in that: described voltage check device is parallel to load.
3. electric battery leakage detection system according to claim 2, is characterized in that: described load comprises resistance.
4. electric battery leakage detection system according to claim 3, is characterized in that: described resistance comprises that resistance is the resistance of 50k Ω to 300k Ω.
5. electric battery leakage detection system according to claim 4, is characterized in that: described resistance comprises that resistance is the resistance of 100k Ω.
6. electric battery leakage detection system according to claim 1, is characterized in that: on described series circuit, the positive terminal of input power arranges unilateral diode.
7. electric battery leakage detection system according to claim 1, is characterized in that: on described series circuit, detector switch is set.
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| CN201210356447.3A CN103674454B (en) | 2012-09-24 | 2012-09-24 | Battery-pack leakage-liquid detection system |
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| CN201210356447.3A CN103674454B (en) | 2012-09-24 | 2012-09-24 | Battery-pack leakage-liquid detection system |
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| CN103674454B CN103674454B (en) | 2017-03-29 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108318827A (en) * | 2018-03-07 | 2018-07-24 | 华霆（合肥）动力技术有限公司 | Apparatus for testing weeping, 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 |
| 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 |
| CN109813507A (en) * | 2019-01-30 | 2019-05-28 | 无锡格林司通自动化设备有限公司 | A kind of flexible-packed battery leak test 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 |
| CN110495012A (en) * | 2017-11-22 | 2019-11-22 | Tdk株式会社 | Battery pack |
| DE102021003056A1 (en) | 2020-07-29 | 2022-02-03 | FEV Europe GmbH | System for detecting liquids in batteries |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JPWO2019102986A1 (en) * | 2017-11-22 | 2020-10-01 | Tdk株式会社 | Battery pack |
| JP7092148B2 (en) | 2017-11-22 | 2022-06-28 | Tdk株式会社 | Battery pack |
| CN108318827A (en) * | 2018-03-07 | 2018-07-24 | 华霆（合肥）动力技术有限公司 | Apparatus for testing weeping, system and electric vehicle |
| 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 |
| CN109813507A (en) * | 2019-01-30 | 2019-05-28 | 无锡格林司通自动化设备有限公司 | A kind of flexible-packed battery leak test method and mechanism |
| 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 |
| DE102021003056A1 (en) | 2020-07-29 | 2022-02-03 | FEV Europe GmbH | System for detecting 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. |