CN101464204A - Lithium ion battery sealing property detection apparatus and detection method using the same - Google Patents

Lithium ion battery sealing property detection apparatus and detection method using the same Download PDF

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Publication number
CN101464204A
CN101464204A CNA2007101254490A CN200710125449A CN101464204A CN 101464204 A CN101464204 A CN 101464204A CN A2007101254490 A CNA2007101254490 A CN A2007101254490A CN 200710125449 A CN200710125449 A CN 200710125449A CN 101464204 A CN101464204 A CN 101464204A
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CN
China
Prior art keywords
ion battery
lithium
lithium ion
liquid
detection
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Pending
Application number
CNA2007101254490A
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Chinese (zh)
Inventor
赵俊峰
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Shenzhen Bak Battery Co Ltd
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Shenzhen Bak Battery Co Ltd
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Priority to CNA2007101254490A priority Critical patent/CN101464204A/en
Publication of CN101464204A publication Critical patent/CN101464204A/en
Pending legal-status Critical Current

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Abstract

The invention relates to equipment for detecting the sealing performance of a lithium ion battery and a detection method adopting the equipment for detection. The detection equipment comprises a container filled with a detection liquid, a clamp and a high-pressure gas connection device. The clamp is used for clamping and placing the lithium ion battery to be detected in the container; a liquid injection hole of the lithium ion battery to be detected is communicated with one end of the high-pressure gas connection device; and a high-pressure gas source is connected with the other end of the high-pressure gas connection device. The detection method comprises the following steps: installing the lithium ion battery, in which the liquid is not injected, on the clamp; clamping the top end and the bottom end of the lithium ion battery tightly; immersing the lithium ion battery into the detection liquid; feeding gas at the gas pressure being larger than the atmospheric pressure into the lithium ion battery by using the high-pressure gas connection device; and observing whether bubble appears in the detection liquid. The invention carries out sealing performance detection by adopting the high-pressure gas and the lithium ion battery immersed in the liquid, and has the advantage of high detection speed.

Description

Lithium-ion battery sealing-performance checkout equipment and the method that adopts this equipment to detect
[technical field]
The method that the present invention relates to a kind of checkout equipment of battery performance and adopt this equipment to detect relates in particular to a kind of lithium-ion battery sealing-performance checkout equipment and adopts the method for the detection that this equipment carries out.
[background technology]
Lithium ion battery is widely used on the products such as notebook computer, video camera, digital camera, PDA(Personal Digital Assistant), communication terminal product and electric tool, and its specification is many, application is wide, demand is big.In addition, lithium ion battery also is applied in south poles scientific investigation, mountain-climbing exploration equitemperature is extremely low, air pressure the is thin severe rugged environment, and the power drive of high power discharge etc.
The special cells that is used for mal-condition is very high to the requirement of its sealing.Figure 1 shows that the equipment of conventional detection of negative pressure lithium-ion battery sealing-performance, it has the bottle of detection 1, be loaded with liquid 2 in this detection bottle 1, be inserted with detector tube 3 and exhaust tube 4 in the bottleneck that detects bottle 1, the bottom of this detector tube 3 is inserted in the liquid 2, locate to be inserted with a syringe needle 6 in the liquid injection hole of lithium ion battery 5 (among the figure not label), this syringe needle 6 is connected with lithium ion battery 5 by seal 7, and an end of syringe needle 6 is connected with the detector tube 3 that detects on bottle 1 by wireway 8.During detection, each junction is tightly connected, and exhaust tube 4 was bled after the several seconds, saw whether detector tube 3 has bubble and emerge continuously, if emerge bubble, represent that then the sealing of lithium ion battery 5 is not enough, otherwise then lithium ion battery 5 sealings is good.The detection speed of above-mentioned lithium-ion battery sealing-performance is slower, and degree of accuracy is not enough, for example, certain cylinder-type power battery, when whether its upper cover plate of detection, lower cover and lithium ion battery cylindrical shell weld exist little leakage, under 0.05Mpa, measure, need about 5 minutes.
[summary of the invention]
Technical matters to be solved by this invention is to provide a kind of equipment of energy fast detecting lithium-ion battery sealing-performance.
Another technical matters to be solved by this invention is to provide a kind of and adopts above-mentioned checkout equipment to carry out the method that lithium-ion battery sealing-performance detects.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of lithium-ion battery sealing-performance checkout equipment is provided, it comprises container, anchor clamps and the high pressure gas coupling arrangement that is loaded with detection liquid, these anchor clamps can insert and put lithium ion battery to be measured and be positioned in the container, one end of this high pressure gas coupling arrangement is connected with the liquid injection hole of lithium ion battery, and its other end links to each other with high-pressure air source.
As further improvement in the technical proposal, described anchor clamps have base and loam cake.
As further improvement in the technical proposal, described anchor clamps also comprise the regulating device that is used to regulate the loam cake position, this regulating device comprises support, joint pin, be positioned at the spanner of joint pin top and be sheathed on flexible member on the joint pin, one end of this joint pin is fixed on and covers on described, this spanner is articulated on the support, the one end is provided with cam, spanner can rotate between the two positions around pivoting point, when it is in one of them position, flexible member is compressed, the cam of spanner compresses joint pin, and loam cake is in the clamping station, and it cooperates with base and mesuring battary is clamped.
As further improvement in the technical proposal, described checkout equipment comprises that further one can charge into or extract out the detection liquid supplying device that detects liquid in container, and this feedway is connected with described container by a connecting pipe.
Another technical scheme of the present invention is: the method that provides a kind of lithium-ion battery sealing-performance to detect, and it may further comprise the steps: the lithium ion battery of fluid injection is not installed on the anchor clamps, and the top and bottom ends of lithium ion battery is clamped; Above-mentioned lithium ion battery is immersed in the detection liquid; Charge into gas by the high pressure gas coupling arrangement in above-mentioned lithium ion battery, the air pressure of this gas is higher than atmospheric pressure; Observe and detect in the liquid bubble whether occurs.
As further improvement in the technical proposal, described detection liquid is anhydrous organic solvent.
As further improvement in the technical proposal, described gas is a kind of in dry air, nitrogen, the inert gas, also can be the mixed gas of two or more gases in the above-mentioned gas.
Because the present invention adopts gases at high pressure and the lithium ion battery that is immersed in the liquid to carry out the sealing detection, its detection speed is fast, and the required time is about 10 seconds, compares with aforementioned existing detection of negative pressure technology, has saved detection time greatly.In addition, the gas performance that detection liquid of the present invention adopts anhydrous organic solvent, charge into is more stable, and the fluid injection process that lithium ion battery is follow-up is not had influence, can guarantee the performance of lithium ion battery.
[description of drawings]
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the synoptic diagram of the equipment of conventional detection of negative pressure lithium-ion battery sealing-performance.
Fig. 2 is the synoptic diagram of lithium-ion battery sealing-performance checkout equipment among the present invention.
[embodiment]
Seeing also Fig. 2, is lithium-ion battery sealing-performance checkout equipment of the present invention, and this checkout equipment comprises container 10, anchor clamps and the high pressure gas coupling arrangement 200 that is positioned on the pedestal 100, is loaded with to detect liquid 20 in this container 10.
These anchor clamps have the base 30 and the loam cake 31 that lithium ion battery to be measured 300 can be inserted and put wherein, when detecting lithium-ion battery sealing-performance, base 30 is fitted with the bottom surface of lithium ion battery 300 shells, and loam cake 31 is fitted with the end face of lithium ion battery 300 shells, thereby can prevent that lithium ion battery 300 is out of shape in gas replenishment process.This base 30 is positioned at container 10; This loam cake 31 is positioned at container 10 tops, is provided with the passage 32 of supplied gas circulation in loam cake 31, and the liquid injection hole of passage 32 bottoms by a seal 34 and lithium ion battery 300 (among the figure not label) is connected.The end of this high pressure gas coupling arrangement 200 1 is connected with passage 32, and its other end links to each other with the high-pressure air source (not shown).Certainly, also can not offer passage 32 in the loam cake 31, and an end of high pressure gas coupling arrangement 200 can be connected with the liquid injection hole of lithium ion battery 300 directly, as long as can guarantee the impermeability of its junction.
After the lithium-ion battery sealing-performance detection finishes, can successfully from detect liquid 20, take out for the ease of lithium ion battery 300, checkout equipment of the present invention comprises that further one detects liquid supplying device.This feedway is connected with container 10 by a connecting pipe 40, and it can charge into or extract out quantitative detection liquid 20 in container 10.This feedway comprises support 50, liquid storage cylinder 51 and is positioned at the liquid level governor weight 52 of liquid storage cylinder 51.This support 50 is provided with pulley 53, web member 54 and slide rail 55, and this web member 54 can move up and down along slide rail 55, and a stay cord 56 hang on the pulley 53, and its two ends are connected with liquid level governor weight 52 and web member 54 respectively.When web member 54 when slide rail 55 moves up, liquid level governor weight 52 moves downward, it can be pressed into the detection liquid 20 in the liquid storage cylinder 51 in the container 10; When web member 54 when slide rail 55 moves down, liquid level governor weight 52 moves upward, detection liquid 20 in the container 10 is pumped down in the liquid storage cylinder 51, when the liquid level of the detection liquid 20 in the container 10 is lower than the apical side height of lithium ion battery 300, lithium ion battery 300 can be taken out.
As a further improvement on the present invention, when lithium ion battery 300 when being square, for the sidewall that prevents lithium ion battery 300 lithium ion battery 300 shells in gas replenishment process deforms, the base 30 of anchor clamps is further fitted with the side of lithium ion battery 300 shells.
Lithium ion battery to be measured 300 is installed for convenience, and above-mentioned anchor clamps also comprise regulating device, to regulate the position of loam cake 31.This regulating device comprises support 35, joint pin 36, be positioned at the spanner 37 of joint pin 36 tops and be sheathed on flexible member 38 (being spring in the present embodiment) on the joint pin 36.One end of this joint pin 36 is fixed on the loam cake 31; This spanner 37 is articulated on the support 35, the one end is provided with cam (among the figure not label), spanner 37 can rotate between horizontal level and upright position around pivoting point, when it is in vertical position, flexible member 38 is compressed, the cam of spanner 37 compresses joint pin 36, and loam cake 31 is moved downward to the clamping station, cooperates with base 30 and lithium ion battery to be measured 300 is clamped.
In the present embodiment, the mode of rotating by cam realizes moving up and down of loam cake 31, certainly, also can regulate the position of loam cake 31 by other existing mode.Be appreciated that by regulating the position of container 10, also can be convenient to install lithium ion battery to be measured 300.
The method that adopts above-mentioned checkout equipment to carry out the lithium-ion battery sealing-performance detection may further comprise the steps: the lithium ion battery to be measured 300 of fluid injection is not installed on the base 30 of anchor clamps, rotary spanner 37, loam cake 31 is moved down, thereby the loam cake 31 of anchor clamps and base 30 are fitted with top, the bottom surface of lithium ion battery 300 shells respectively; Regulate liquid level governor weight 52, it is moved downward, the detection liquid 20 in the liquid storage cylinder 51 is depressed in the container 10, until with lithium ion battery to be measured 300 submergences; Charge in lithium ion battery 300 by high pressure gas coupling arrangement 200 and to be higher than atmospheric dry gas; Continue several seconds, observe in the detection liquid 20 in the container 10 bubble whether occurs, if bubble occurs, expression lithium ion battery 300 sealings are not enough, otherwise then lithium ion battery 300 sealings are good; After detection finishes, regulate liquid level governor weight 52, it is moved upward, thereby the detection liquid 20 in the container 10 is evacuated in the liquid storage cylinder 51, rotary spanner 37 moves up loam cake 31, takes out lithium ion battery 300.
For fear of lithium ion battery 300 quilt " pollution " in testing process, that is, lithium ion battery 300 is kept dry state in follow-up fluid injection process, employed detection liquid 20 is anhydrous organic solvent in the said method, and it can be a kind of in dimethyl carbonate (DMC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC), carbonic allyl ester (PC), the ethylene carbonate (EC) or at least two kinds potpourri wherein; Employed gas is the more stable gas of performance in the said method, and a kind of as in air, nitrogen, the inert gas also can be the mixed gas of two or more gases in the above-mentioned gas.
The present invention adopts gases at high pressure and the lithium ion battery that is immersed in the liquid to carry out the sealing detection, and its detection speed is fast, and the required time is about 10 seconds, compares with aforementioned existing detection of negative pressure technology, has saved detection time greatly.

Claims (12)

1, a kind of lithium-ion battery sealing-performance checkout equipment, comprise and be loaded with the container that detects liquid, it is characterized in that: described checkout equipment also comprises the anchor clamps and the high pressure gas coupling arrangement that lithium ion battery to be measured can be inserted and put and be positioned in the described container, one end of this high pressure gas coupling arrangement is connected with the liquid injection hole of lithium ion battery to be measured, and its other end links to each other with high-pressure air source.
2, lithium-ion battery sealing-performance checkout equipment as claimed in claim 1 is characterized in that: described high pressure gas coupling arrangement is a wireway, and these wireway two ends are connected with the liquid injection hole and the high-pressure air source of lithium ion battery to be measured respectively.
3, lithium-ion battery sealing-performance checkout equipment as claimed in claim 1, it is characterized in that: described high pressure gas coupling arrangement is the passage of the supplied gas circulation of offering on described anchor clamps, and these passage two ends are connected with the liquid injection hole and the high-pressure air source of lithium ion battery to be measured respectively.
4, lithium-ion battery sealing-performance checkout equipment as claimed in claim 1, it is characterized in that: described anchor clamps have base and loam cake.
5, lithium-ion battery sealing-performance checkout equipment as claimed in claim 4, it is characterized in that: described anchor clamps also comprise the regulating device that is used to regulate the loam cake position, this regulating device comprises support, joint pin, be positioned at the spanner of joint pin top and be sheathed on flexible member on the joint pin, one end of this joint pin is fixed on and covers on described, this spanner is articulated on the support, the one end is provided with cam, spanner can rotate between the two positions around pivoting point, when it is in one of them position, flexible member is compressed, the cam of spanner compresses joint pin, and loam cake is in the clamping station, and it cooperates with base and mesuring battary is clamped.
6, as any described lithium-ion battery sealing-performance checkout equipment in the claim 1 to 5, it is characterized in that: described checkout equipment comprises that further one can charge into or extract out the detection liquid supplying device that detects liquid in container, and this feedway is connected with described container by a connecting pipe.
7, lithium-ion battery sealing-performance checkout equipment as claimed in claim 6, it is characterized in that: described feedway comprises the liquid storage cylinder, and the liquid level governor weight that is positioned at the liquid storage cylinder and can moves up and down.
8, lithium-ion battery sealing-performance checkout equipment as claimed in claim 7, it is characterized in that: described feedway also comprises a support, be provided with pulley, web member and slide rail in this support, this web member can move up and down along slide rail, be linked with a stay cord on pulley, the two ends of this stay cord are connected with liquid level governor weight and web member respectively.
9, a kind of method that adopts checkout equipment as claimed in claim 1 to carry out the lithium-ion battery sealing-performance detection may further comprise the steps:
The lithium ion battery of not fluid injection is installed on the anchor clamps, and the top and bottom ends of lithium ion battery is clamped;
Above-mentioned lithium ion battery is immersed in the detection liquid;
Charge into gas by the high pressure gas coupling arrangement in above-mentioned lithium ion battery, the air pressure of this gas is higher than atmospheric pressure;
Observe and detect in the liquid bubble whether occurs.
10, the method for lithium-ion battery sealing-performance detection as claimed in claim 9, it is characterized in that: described detection liquid is anhydrous organic solvent.
11, the method that detects of lithium-ion battery sealing-performance as claimed in claim 10 is characterized in that: described detection liquid is a kind of in dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate, carbonic allyl ester, the ethylene carbonate or at least two kinds potpourri wherein.
12, as any method that described lithium-ion battery sealing-performance detects in the claim 9 to 11, it is characterized in that: a kind of in dry air, nitrogen, the inert gas of described gas also can be the mixed gas of two or more gases in the above-mentioned gas.
CNA2007101254490A 2007-12-19 2007-12-19 Lithium ion battery sealing property detection apparatus and detection method using the same Pending CN101464204A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNA2007101254490A CN101464204A (en) 2007-12-19 2007-12-19 Lithium ion battery sealing property detection apparatus and detection method using the same

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101881689A (en) * 2010-06-30 2010-11-10 奇瑞汽车股份有限公司 Large-capacity power lithium-ion battery sealing-performance testing equipment and test method thereof
CN101706352B (en) * 2009-11-09 2011-06-01 卧龙电气集团股份有限公司 Air tightness detection device of battery big cover free of maintenance
CN102305693A (en) * 2011-09-16 2012-01-04 奇瑞汽车股份有限公司 Device and method for detecting leak of upper cover of power battery
CN102426081A (en) * 2011-08-25 2012-04-25 奇瑞汽车股份有限公司 Positive pressure detection equipment for tightness of large-capacity power lithium ion battery and detection method thereof
CN102539080A (en) * 2012-01-06 2012-07-04 肇庆理士电源技术有限公司 Sealing detection method and system for lead-acid storage battery
CN102735407A (en) * 2012-06-28 2012-10-17 奇瑞汽车股份有限公司 Equipment and method of detecting sealability of lithium ion battery
CN102928166A (en) * 2012-07-23 2013-02-13 荆门市恒生源电子科技有限公司 Leakage detection device for lithium batteries
CN103389194A (en) * 2012-05-11 2013-11-13 万向电动汽车有限公司 Device and method for confirming technological parameters of lithium battery aluminum plastic packaging film heat sealing
CN104614128A (en) * 2015-01-12 2015-05-13 浙江天能能源科技有限公司 Lithium battery liquid leakage detection device
CN107589376A (en) * 2017-08-10 2018-01-16 上海交通大学 The deep pressure battery performance test device in the full sea of simulation and method
CN110440989A (en) * 2019-08-12 2019-11-12 惠州亿纬锂能股份有限公司 A method of assessment lithium-ion battery sealing-performance
CN110469325A (en) * 2019-08-08 2019-11-19 中国石油天然气股份有限公司 A kind of oil gas field gas injection tube column looks for leakage method
CN111638013A (en) * 2020-06-13 2020-09-08 鹰潭市瑞晟科技有限公司 Micro-component air tightness detection device
CN111982425A (en) * 2020-07-21 2020-11-24 中国电子产品可靠性与环境试验研究所((工业和信息化部电子第五研究所)(中国赛宝实验室)) Lithium ion battery air tightness detection method and device

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101706352B (en) * 2009-11-09 2011-06-01 卧龙电气集团股份有限公司 Air tightness detection device of battery big cover free of maintenance
CN101881689A (en) * 2010-06-30 2010-11-10 奇瑞汽车股份有限公司 Large-capacity power lithium-ion battery sealing-performance testing equipment and test method thereof
CN102426081B (en) * 2011-08-25 2013-11-20 奇瑞汽车股份有限公司 Positive pressure detection equipment for tightness of large-capacity power lithium ion battery and detection method thereof
CN102426081A (en) * 2011-08-25 2012-04-25 奇瑞汽车股份有限公司 Positive pressure detection equipment for tightness of large-capacity power lithium ion battery and detection method thereof
CN102305693A (en) * 2011-09-16 2012-01-04 奇瑞汽车股份有限公司 Device and method for detecting leak of upper cover of power battery
CN102539080A (en) * 2012-01-06 2012-07-04 肇庆理士电源技术有限公司 Sealing detection method and system for lead-acid storage battery
CN103389194A (en) * 2012-05-11 2013-11-13 万向电动汽车有限公司 Device and method for confirming technological parameters of lithium battery aluminum plastic packaging film heat sealing
CN102735407A (en) * 2012-06-28 2012-10-17 奇瑞汽车股份有限公司 Equipment and method of detecting sealability of lithium ion battery
CN102735407B (en) * 2012-06-28 2015-06-10 奇瑞汽车股份有限公司 Equipment and method of detecting sealability of lithium ion battery
CN102928166A (en) * 2012-07-23 2013-02-13 荆门市恒生源电子科技有限公司 Leakage detection device for lithium batteries
CN104614128A (en) * 2015-01-12 2015-05-13 浙江天能能源科技有限公司 Lithium battery liquid leakage detection device
CN104614128B (en) * 2015-01-12 2017-12-08 浙江天能能源科技股份有限公司 A kind of lithium battery apparatus for testing weeping
CN107589376A (en) * 2017-08-10 2018-01-16 上海交通大学 The deep pressure battery performance test device in the full sea of simulation and method
CN110469325A (en) * 2019-08-08 2019-11-19 中国石油天然气股份有限公司 A kind of oil gas field gas injection tube column looks for leakage method
CN110440989A (en) * 2019-08-12 2019-11-12 惠州亿纬锂能股份有限公司 A method of assessment lithium-ion battery sealing-performance
CN110440989B (en) * 2019-08-12 2021-04-09 惠州亿纬锂能股份有限公司 Method for evaluating lithium ion battery sealing performance
CN111638013A (en) * 2020-06-13 2020-09-08 鹰潭市瑞晟科技有限公司 Micro-component air tightness detection device
CN111982425A (en) * 2020-07-21 2020-11-24 中国电子产品可靠性与环境试验研究所((工业和信息化部电子第五研究所)(中国赛宝实验室)) Lithium ion battery air tightness detection method and device

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