CN105466641A - Battery leakage rapid detection device and detection method thereof - Google Patents
Battery leakage rapid detection device and detection method thereof Download PDFInfo
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- CN105466641A CN105466641A CN201510665866.9A CN201510665866A CN105466641A CN 105466641 A CN105466641 A CN 105466641A CN 201510665866 A CN201510665866 A CN 201510665866A CN 105466641 A CN105466641 A CN 105466641A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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Abstract
The invention relates to a battery leakage rapid detection device and a detection method thereof. The detection device comprises a chassis, a cover body, a gas sensor, a vacuum pump and a display terminal. The chassis is provided with a sealing ring. The chassis is connected with an elevating mechanism. The cover body is arranged above the chassis. When the cover body is engaged with the chassis, a sealed cavity body is formed. The cover body is connected with the vacuum pump through a pipeline. The gas sensor is arranged in the pipeline. A signal wire connected to the gas sensor is connected with a display terminal. The detection method comprises the steps that: a battery to be detected is placed on the chassis, the elevating mechanism controls the chassis to rise until the chassis is closely engaged with the cover body, the vacuum pump carries out vacuum pumping to enable the vacuum degree to reach a set value and maintains the pressure for a period of time, an output value of the gas sensor is reflected on the display terminal, and whether the battery leaks is judged. According to the invention, lithium ion batteries poor in sealing performance can be accurately and effectively detected, the operation is simple, the detection speed is high, the reliability is high, a plurality of batteries can be detected at the same time, the efficiency is improved, and the requirements of large-batch detection are met.
Description
Technical field
The present invention relates to a kind of checkout equipment of lithium ion battery, particularly relate to a kind of battery leakage device for fast detecting and detection method thereof.
Background technology
Lithium ion battery is fitst water, the most promising energy-storage travelling wave tube of generally acknowledging at present.Compare lead-acid battery, Ni-MH battery etc., lithium ion battery is the green battery with a series of premium properties, has been widely used in the fields such as mobile phone, notebook computer, electric tool and new-energy automobile.
The standardization of column lithium ion battery physical dimension, and manufacturing process technology is quite ripe, so be undoubtedly the first-selection of electric automobile field battery types.But monomer battery core enormous amount needed for batteries of electric automobile group and working environment more complicated is changeable, requires more and more higher to the consistance of column lithium ion battery and security performance.If in use there is column lithium ion battery poorly sealed, there is leakage, so battery in use chemical property can be deteriorated gradually, thus the consistance of whole large electric battery can be affected, the situation such as cause over-charging of battery to cross to put occur, serious meeting causes safety problem.If electrolytic solution oozes out from battery, so electrolytic solution can corrode outside wiring board, and causes battery short circuit, then security incident occurs.Therefore the sealing property of column lithium ion battery is a very important index, and the sealing of column lithium ion battery is not proper positive confinement, but by punch press compression stainless steel metal shell and battery cap on O-ring seal realize seal.So cell sealing cushion rubber is damaged, the distortion of punch press hypotony, battery container all may cause sealing to reduce, even electrolytic solution flows out.Therefore need strictly to detect the sealing property of column lithium ion battery before dispatching from the factory, but current detection method difficulty is higher, and detect slow, reliability is poor.
Summary of the invention
It is higher that the present invention mainly solves original detection method difficulty to lithium-ion battery sealing-performance energy, and operation inconvenience detects slow, the technical matters that reliability is poor; A kind of battery leakage device for fast detecting and detection method thereof are provided, it can detect the lithium ion battery of poor sealing accurately and effectively, simple to operate, detection speed is fast, and reliability is high, and cost is lower, be particularly suitable for the mass detection of large-scale industrial production battery, thus guarantee the sealing property of lithium ion battery, guarantee the consistance of whole large electric battery, improve security.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: battery leakage device for fast detecting of the present invention, comprise chassis, cover body, gas sensor, vacuum pump and display terminal, chassis is connected with an elevating mechanism, cover body is positioned at the top on chassis, time on cover body lid to chassis, cover body and chassis surround a seal chamber, cover body is connected with described vacuum pump by pipeline, described gas sensor is located in the pipeline connecting cover body and vacuum pump, and the signal wire be connected on gas sensor is connected with described display terminal.Elevating mechanism controls rising or the decline on chassis.Chassis rises, and cover body is closely sealed; Chassis declines, and is separated with cover body.Elevating mechanism can adopt by motor-driven electric lifting mechanism or the air lifter by air cylinder driven.During detection, lithium ion cell positive to be detected is put on chassis upward, control elevating mechanism make chassis rises, until chassis and cover body closely sealed, restart vacuum pump evacuation, and keep vacuumize a period of time.If cell sealing is bad, the C of inside battery
2h
4, CH
4, C
2h
6, H
2and the inflammable gas such as CO can escape into seal chamber and along pipeline from inside battery due to pressure reduction and flows through gas sensor, gas sensor converts electric signal to after these inflammable gass being detected and exports to display terminal, judges battery whether leakage and leakage degree according to display numerical value change.Display terminal can be the treatment facility of band display screen, also can be the computer being provided with analysis software.Multiple mesuring battary can be placed in chassis simultaneously, and multiple battery can carry out leakage detection simultaneously.One is because cylindrical battery leakage probability of happening is extremely low, and two is that use amount is large because cylindrical battery volume is little.On chassis, multiple battery can be placed according to actual conditions to carry out vacuumizing detection simultaneously, meet the needs of mass detection, raise the efficiency.The present invention can detect the lithium ion battery of poor sealing accurately and effectively, simple to operate, detection speed is fast, reliability is high, cost is lower, is particularly suitable for the mass detection of large-scale industrial production battery, thus guarantees the sealing property of lithium ion battery, guarantee the consistance of whole large electric battery, improve security.
As preferably, described chassis is provided with an O-ring seal, and the size of O-ring seal is identical with the bore of described cover body, and the position of O-ring seal is corresponding with cover body.When chassis rises, cover body is buckled on O-ring seal, improves the closed intensity of chassis and cover body, guarantees that seal chamber has better sealing property.
As preferably, described chassis is provided with the pallet vertically placing multiple battery.Pallet has and places the spaced-apart locations of cylindrical battery, multiple cylindrical battery can put into pallet vertical spacing, then is put on chassis by pallet and detects.After detection completes, whole pallet is taken out, then takes out battery.In order to raise the efficiency, can prepare two pallets, hocket detection.Battery on a pallet, when detecting, battery to be detected is put well by another pallet.Detect and terminate, take out previous pallet, second pallet can be put into immediately and detect, more save time, raise the efficiency.
As preferably, a four-pass connecting joint is provided with in described pipeline, the lower port of four-pass connecting joint is connected with described cover body by pipeline, the upper port of four-pass connecting joint is connected with described vacuum pump by pipeline, left port and the right output port of four-pass connecting joint are all stamped blind plate, described gas sensor is located in described four-pass connecting joint, and the signal wire be connected on gas sensor is connected with described display terminal through a blind plate.The left port of blind plate sealing four-pass connecting joint and right output port, a blind plate central aperture, for through signal wire, also must install O-ring seal or seal snap ring between certain hole and signal wire.The setting of four-pass connecting joint, guarantees the easier for installation of gas sensor, and has larger space around, and make gas flowing in pipeline more smooth and easy, four-pass connecting joint is relatively arranged near cover body, makes detection more reliable.
As preferably, described battery leakage device for fast detecting comprises one section of U-tube road arranged down, and the one end on U-tube road is connected by the upper port of pipeline with described four-pass connecting joint, and the other end on U-tube road is connected with described vacuum pump by connector.The installation of vacuum pump be connected convenient.
As preferably, the two ends of described connection cover body and the pipeline of four-pass connecting joint are provided with KF flange, and the two ends of described connection four-pass connecting joint and the pipeline on U-tube road are also provided with KF flange.Be convenient to dismounting, easy to connect and firmly.
As preferably, described vacuum pump is the vacuum pump carrying vacuum pressure display device and holding pressure control equipment, and described gas sensor is ethylene gas sensor.Lithium ion battery because the reaction of electrolyte inside and negative electrode active material can produce the inflammable gass such as ethene, therefore adopts ethylene gas sensor to detect the leakiness of battery in making and using.Ethylene gas sensor is high precision, a high reliability sensing equipment, accurately can detect the inflammable gas that battery may be overflowed.During detection, need to reach certain vacuum tightness, and pressurize a period of time, realized by vacuum pump, vacuum pump carries and vacuumizes and holding pressure control program, can Automated condtrol vacuum tightness and dwell time by setting.
The detection method of battery leakage device for fast detecting of the present invention is: be put into upward by anode to be detected on described chassis, elevating mechanism described in control makes chassis rises, until chassis and described cover body closely sealed, vacuum pump described in startup vacuumizes described pipeline and seal chamber, until vacuum tightness reaches certain settings, and pressurize a period of time, the numerical value that the detected value of the gas sensor described in observation reflects on described display terminal, judges whether battery exists the phenomenon of leakage.When not having the inflammable gass such as ethene, on display terminal, displayed value is 0ppm; Numerical value change when there being battery to occur leakage, display terminal can demonstrate corresponding numerical value, as long as just can be judged as that battery exists the phenomenon of leakage.The present invention can detect the lithium ion battery of poor sealing accurately and effectively, simple to operate, detection speed is fast, reliability is high, cost is lower, is particularly suitable for the mass detection of large-scale industrial production battery, thus guarantees the sealing property of lithium ion battery, guarantee the consistance of whole large electric battery, improve security.
As preferably, during detection, the vacuum degree that described seal chamber reaches is-0.09Mpa ~ 0.095Mpa, and reaching the dwell time after vacuum degree is 5S ~ 10S.Vacuum pump carries and vacuumizes and holding pressure control program, can Automated condtrol vacuum tightness and dwell time by setting.Further accuracy and the reliability improving detection.
As preferably, detect after terminating, the elevating mechanism described in control makes described chassis decline, namely described seal chamber is opened, vacuum pump described in startup is bled a period of time, carries out purge of gas to the pipeline of cover body and connection cover body and vacuum pump, gets ready for detecting next time.After generally opening cover body, then vacuumize 3 ~ 5S time, avoid front one-time detection to have gas retain and cause interference, guarantee the accuracy that next time detects and reliability.
The invention has the beneficial effects as follows: the lithium ion battery that can detect poor sealing accurately and effectively, simple to operate, detection speed is fast, reliability is high, and cost is lower, thus guarantees the sealing property of lithium ion battery, guarantee the consistance of whole large electric battery, improve security.Can detect multiple battery simultaneously, raise the efficiency, be particularly suitable for the mass detection of large-scale industrial production battery.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of decomposition texture schematic diagram of the present invention.
1. chassis, 2. cover body, 3. gas sensor, 4. vacuum pump, 5. display terminal, 6. elevating mechanism, 7. O-ring seal, 8. pallet, 9. four-pass connecting joint, 10. blind plate in figure, 11.U type pipeline, 12. batteries.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: the battery leakage device for fast detecting of the present embodiment, as shown in Figure 1 and Figure 2, comprises chassis 1, cover body 2, gas sensor 3, vacuum pump 4 and display terminal 5.Chassis 1 is embedded with an O-ring seal 7, chassis in O-ring seal surrounds is placed with a pallet 8, pallet there is the spaced-apart locations of placing cylindrical battery, multiple cylindrical battery can put into pallet vertical spacing, the back side on chassis 1 is connected with an elevating mechanism 6, and elevating mechanism 6 adopts the air lifter by air cylinder driven.Cover body 2 is positioned at the top on chassis 1, and the size of O-ring seal 7 is identical with the bore of cover body 2, and position and the cover body 2 of O-ring seal 7 are corresponding.When chassis 1 is closely sealed with cover body 2 by elevating mechanism controls to rise, cover body 2 and chassis 1 surround a seal chamber.Be connected with U-tube road 11 by pipeline, four-pass connecting joint 9 between cover body 2 and vacuum pump 4, U-tube road 11 is arranged down.Gas sensor 3 is arranged in four-pass connecting joint 9, the lower port of four-pass connecting joint 9 is connected with cover body 2 by pipeline, the upper port of four-pass connecting joint 9 is connected by pipeline one end with U-tube road 11, the other end on U-tube road 11 is connected with vacuum pump 4 by connector, the two ends of two sections of pipelines all adopt KF flange method to connect, the left port of four-pass connecting joint 9 and right output port are all stamped blind plate 10, and the signal wire be connected on gas sensor 3 is connected with display terminal 5 through a blind plate 10.In the present embodiment, vacuum pump 4 adopts the vacuum pump carrying vacuum tightness fetch equipment, and carry and vacuumize and holding pressure control parts, can Automated condtrol vacuum tightness and dwell time by setting, gas sensor 3 adopts ethylene gas sensor, and display terminal 5 adopts the computer being provided with gas analysis system.In the present embodiment, chassis, cover body, four-pass connecting joint, pipeline and U-tube road all adopt stainless steel to make.
The detection method of above-mentioned battery leakage device for fast detecting is:
Multiple battery 12 positive pole to be detected is put into pallet 8 upward vertically, again pallet to be put on chassis 1 and to be positioned at O-ring seal 7, controlling elevating mechanism 6 makes chassis 1 rise, until cover body is buckled on O-ring seal, chassis 1 and cover body 2 is closely sealed surrounds seal chamber, startup vacuum pump 4 pairs of pipelines and seal chamber vacuumize, make vacuum degree between-0.09Mpa ~ 0.095Mpa, maintain the dwell time of 5 ~ 10S again, the numerical value that the detected value observing gas sensor 3 reflects on computers, judges whether battery exists the phenomenon of leakage.When not having the inflammable gass such as ethene, on computer, displayed value is 0ppm, and illustrate that battery is without leakage, sealing is fine; When there being the inflammable gass such as ethene, computer can demonstrate corresponding numerical value, illustrating that battery exists the phenomenon of leakage.
After detection terminates, controlling elevating mechanism 6 makes chassis 1 decline, namely chassis and the closely sealed seal chamber surrounded of cover body is opened, start vacuum pump 4, vacuumize 3 ~ 5S time again, purge of gas is carried out to the whole pipeline of cover body 2 and connection cover body 2 and vacuum pump 4, avoids front one-time detection to have the inflammable gass such as ethene retain and cause interference to detecting next time, get ready for detecting next time.
The present invention can detect the lithium ion battery of poor sealing accurately and effectively, is especially applicable to detecting column lithium ion battery, simple to operate, detection speed is fast, and reliability is high, and cost is lower, thus guarantee the sealing property of lithium ion battery, guarantee the consistance of whole large electric battery, improve security.Can detect multiple battery simultaneously, raise the efficiency, be particularly suitable for the mass detection of large-scale industrial production battery.
Claims (10)
1. a battery leakage device for fast detecting, it is characterized in that comprising chassis (1), cover body (2), gas sensor (3), vacuum pump (4) and display terminal (5), chassis (1) is connected with an elevating mechanism (6), cover body (2) is positioned at the top of chassis (1), when cover body (2) lid is upper to chassis (1), cover body (2) and chassis (1) surrounds a seal chamber, cover body (2) is connected with described vacuum pump (4) by pipeline, described gas sensor (3) is located in the pipeline connecting cover body (2) and vacuum pump (4), the signal wire be connected on gas sensor (3) is connected with described display terminal (5).
2. battery leakage device for fast detecting according to claim 1, it is characterized in that described chassis (1) is provided with an O-ring seal (7), the size of O-ring seal (7) is identical with the bore of described cover body (2), and position and the cover body (2) of O-ring seal (7) are corresponding.
3. battery leakage device for fast detecting according to claim 1 and 2, is characterized in that described chassis (1) is provided with the pallet (8) vertically placing multiple battery.
4. battery leakage device for fast detecting according to claim 1 and 2, it is characterized in that in described pipeline, being provided with a four-pass connecting joint (9), the lower port of four-pass connecting joint (9) is connected with described cover body (2) by pipeline, the upper port of four-pass connecting joint (9) is connected with described vacuum pump (4) by pipeline, the left port of four-pass connecting joint (9) and right output port are all stamped blind plate (10), described gas sensor (3) is located in described four-pass connecting joint (9), the signal wire be connected on gas sensor (3) is connected with described display terminal (5) through a blind plate (10).
5. battery leakage device for fast detecting according to claim 4, it is characterized in that comprising one section of U-tube road (11) arranged down, the one end on U-tube road (11) is connected by the upper port of pipeline with described four-pass connecting joint (9), and the other end of U-tube road (11) is connected with described vacuum pump (4) by connector.
6. battery leakage device for fast detecting according to claim 5, it is characterized in that the two ends of the pipeline of described connection cover body (2) and four-pass connecting joint (9) are provided with KF flange, the two ends of described connection four-pass connecting joint (9) and the pipeline of U-tube road (11) are also provided with KF flange.
7. battery leakage device for fast detecting according to claim 1 and 2, it is characterized in that described vacuum pump (4) is for carrying the vacuum pump of vacuum pressure display device and holding pressure control equipment, described gas sensor (3) is ethylene gas sensor.
8. the detection method of a battery leakage device for fast detecting as claimed in claim 1, it is characterized in that anode to be detected to be put into upward on described chassis (1), elevating mechanism (6) described in control makes chassis (1) rise, until chassis (1) and described cover body (2) closely sealed, vacuum pump (4) described in startup vacuumizes described pipeline and seal chamber, until vacuum tightness reaches certain settings, and pressurize a period of time, the detected value of the gas sensor (3) described in observation is at the upper numerical value reflected of described display terminal (5), judge whether battery exists the phenomenon of leakage.
9. the detection method of battery leakage device for fast detecting according to claim 8, when it is characterized in that detecting, the vacuum degree that described seal chamber reaches is-0.09Mpa ~ 0.095Mpa, and reaching the dwell time after vacuum degree is 5S ~ 10S.
10. the detection method of battery leakage device for fast detecting according to claim 8 or claim 9, after it is characterized in that detection terminates, elevating mechanism (6) described in control makes described chassis (1) decline, namely described seal chamber is opened, vacuum pump (4) described in startup is bled a period of time, purge of gas is carried out to the pipeline of cover body (2) and connection cover body (2) and vacuum pump (4), gets ready for detecting next time.
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Cited By (11)
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| CN106500923A (en) * | 2016-12-02 | 2017-03-15 | 柯贝尔电能质量技术（上海）有限公司 | A kind of ultracapacitor leak detection tool equipment |
| CN106768680A (en) * | 2016-12-01 | 2017-05-31 | 南京哈维斯特精密机械有限公司 | A kind of efficient foam formula nondestructive inspection test device of convenient use |
| CN107167287A (en) * | 2017-07-27 | 2017-09-15 | 南京英尼格玛工业自动化技术有限公司 | A kind of air-tightness detection device of battery collet |
| CN107991029A (en) * | 2016-10-26 | 2018-05-04 | 广舜检测技术（上海）有限公司 | A kind of lithium ion battery leakage detection apparatus and its leak hunting method using general densimeter |
| CN108398219A (en) * | 2018-05-09 | 2018-08-14 | 东莞市德瑞精密设备有限公司 | Lithium battery leak test device and test method |
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| CN109342511A (en) * | 2018-11-20 | 2019-02-15 | 东莞锂威能源科技有限公司 | Battery electrolyte condition checkout gear and detection method |
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| CN112105904A (en) * | 2018-05-11 | 2020-12-18 | 马波斯S.P.A.公司 | Method for leak testing battery cells and related leak testing system |
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| CN112105904A (en) * | 2018-05-11 | 2020-12-18 | 马波斯S.P.A.公司 | Method for leak testing battery cells and related leak testing system |
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