CN101881689A - Large-capacity power lithium-ion battery sealing-performance testing equipment and test method thereof - Google Patents

Large-capacity power lithium-ion battery sealing-performance testing equipment and test method thereof Download PDF

Info

Publication number
CN101881689A
CN101881689A CN 201010215452 CN201010215452A CN101881689A CN 101881689 A CN101881689 A CN 101881689A CN 201010215452 CN201010215452 CN 201010215452 CN 201010215452 A CN201010215452 A CN 201010215452A CN 101881689 A CN101881689 A CN 101881689A
Authority
CN
China
Prior art keywords
ion battery
vacuum source
airtight container
gas
capacity power
Prior art date
Application number
CN 201010215452
Other languages
Chinese (zh)
Inventor
张海滨
王永
王军
Original Assignee
奇瑞汽车股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 奇瑞汽车股份有限公司 filed Critical 奇瑞汽车股份有限公司
Priority to CN 201010215452 priority Critical patent/CN101881689A/en
Publication of CN101881689A publication Critical patent/CN101881689A/en

Links

Abstract

The invention relates to large-capacity power lithium-ion battery tightness testing equipment and a test method thereof, which comprise a control device, a sealing device, a vacuum source and a sealed container, wherein the vacuum source is connected with the sealed container through a first gas pipeline, a stand is connected with the sealed container through a second gas pipeline, the control device is connected with a sealing device, and/or the vacuum source, and/or the sealed container in a wired and/or wireless way, and is used for controlling and/or testing the vacuum testing process, one part space of the sealed container is used for placing a testing medium, the other part space is a gas space, one end of the gas pipeline is communicated with the gas space in the sealed container, and one end of the second container is inserted in the testing medium.

Description

A kind of large-capacity power lithium-ion battery sealing-performance checkout equipment and detection method thereof

Technical field

The present invention relates to the large-capacity power lithium-ion battery sealing-performance checkout equipment, be specifically related to a kind of large-capacity power lithium-ion battery sealing-performance checkout equipment and detection method thereof.

Background technology

Lithium ion battery is widely used on the products such as notebook computer, video camera, digital camera, mobile phone and electric tool.Particularly in the current society of high speed development, traditional energies such as oil, coal, rock gas are exploited day by day along with people and today of reducing, cleanings such as a new generation's battery one lithium ion battery, fuel cell, environmental protection, the energy conversion energy storing system becomes and solves the environment that modern civilization faces and the effective ways of energy problem efficiently, enjoys people's favor.

But be used for the severe rugged environment that temperature is extremely low, air pressure is thin, and under the mal-conditions such as power drive of high power discharge, very high to the sealing requirements of battery, adopt three kinds of devices to detect the sealing of lithium ion battery at present in the industry.

Wherein a kind of pick-up unit 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 to be measured, and its other end links to each other with high-pressure air source.

During detection, lithium ion battery to be measured is submerged in the detection liquid of container, charge into gases at high pressure to inside lithium ion cell then, continue several seconds, observe in the detection liquid in the container bubble whether occurs, if bubble occurs, the expression lithium-ion battery sealing-performance is not enough, otherwise then lithium-ion battery sealing-performance is good.

If this method operation is careless a little, very easily make detection liquid enter inside battery, influence battery performance; The battery container surface attachment detects liquid, and battery must be handled the detection liquid that surface of shell adheres to and will toast before fluid injection, production cost is increased greatly.So that and keep the inside battery drying, and after earlier battery is put into container, could in container, inject and detect liquid, to discharge detection liquid after finish the inboard earlier and can take out tested battery just love and respect, its complicated operation, work efficiency is lower.

Another kind of pick-up unit is the pressurized air that charges into certain pressure in battery, cuts off source of the gas behind the Inflatable balance, measures pressure drop in the unit interval by pressure tester and instrument, instrument.

This kind method is because pressure differential is very little, and is high to the checkout equipment requirement, costs an arm and a leg, and detects the field condition complexity in addition, and accuracy of detection and stability are had certain influence.

Also having a kind of pick-up unit is carrying liquid in detecting bottle, detects bottle mouth position and plugs detector tube and exhaust tube, and detector tube one end is inserted in and detects in the liquid, is provided with syringe needle in liquid injection hole and connects.

During detection, after exhaust tube is bled, see whether detector tube has bubble and emerge continuously,, represent that then the sealing of lithium ion battery is not enough, otherwise then lithium-ion battery sealing-performance is good if emerge bubble.

This pick-up unit is owing to be syringe needle to be set is connected with the battery liquid-filling hole, and particularly in high power capacity electrokinetic cell fluid injection aperture when big, the junction sealing is difficult to guarantee, to detecting effect and stable generation considerable influence.And the detection speed of pick-up unit is slower, and precision is not enough.

In sum, there is following technical matters in the prior art:

1, detects liquid and enter inside battery, influence battery performance;

2, inefficient operation and production process are loaded down with trivial details, the production cost height;

3, accuracy of detection and stability are not good.

Summary of the invention

The object of the present invention is to provide a kind of lithium ion battery hermetization testing method and device, prevent to detect medium and enter inside battery, volume is little, and cost is low, and is easy to detect accurate, solves the problems referred to above that prior art exists.

By the control device that is used to control vacuum detecting, frame, vacuum source, detector tube, exhaust tube and airtight container are formed the lithium ion battery package seal checker, a part of space in the airtight container is placed and is detected medium, another part is the gas space, airtight container is provided with detector tube and exhaust tube, one end of detector tube is inserted in and detects in the medium, the other end passes the airtight container outer wall and is communicated with packoff, exhaust tube one end is communicated with vacuum source, the gas space in the other end and the airtight container is communicated with, packoff, detector tube, airtight container, exhaust tube forms a gas passage, has the space that is used to insert and put lithium ion battery to be measured between packoff and the base.

Concrete technical scheme is as follows:

A kind of large-capacity power lithium-ion battery sealing-performance checkout equipment comprises control device, packoff, vacuum source and airtight container, and described vacuum source connects described airtight container by first gas piping; Described frame connects described airtight container by second gas piping; Described control device is wired and/or be wirelessly connected to packoff, and/or vacuum source, and/or airtight container, and is used for control and/or detects the vacuum detecting process; A part of space is placed and is detected medium in the described airtight container, and another part is the gas space, and an end of described first gas piping is communicated with the gas space in the airtight container, and an end of described second gas piping is inserted in the detection medium.

Further, the other end of described first gas piping is communicated with the vacuum source of vacuum source, and the other end of described second gas piping passes the airtight container outer wall and is communicated with packoff.

Further, described first gas piping is a detector tube, and described second gas piping is an exhaust tube.

Further, described packoff, detector tube, airtight container, exhaust tube form a gas passage.

Further, also comprise frame, its bottom has a base, and described packoff is placed on its top, and the space between sealing device and the base is used to insert and put lithium ion battery to be measured.

Further, described vacuum source is used for the gas of inside battery is extracted out by detector tube, detection medium, the gas space, exhaust tube, keeps evacuated pressure constant in set-point, makes the inside battery space pressure constant.

Further, also comprise hummer, it connects described control device and is used for piping when battery meets seal request detecting.

Further, also comprise jacking gear, it is installed on the frame, thereby and liftable be used to press down, the battery liquid-filling mouth that makes closely is connected with packoff.

The detection method of the above large-capacity power lithium-ion battery sealing-performance checkout equipment, adopt following steps:

(1) the latter half space in closed container is placed and is detected medium, and the first half is left the gas space;

(2) with in the detection medium in the end insertion airtight container of detector tube, the other end passes the airtight container loam cake and is communicated with packoff;

(3) gas space is communicated with vacuum source;

(4) put into tested battery in gantry base, start button, photoelectric sensor work;

(5) induced cell is in the working position, and jacking gear presses down, and the battery liquid-filling mouth closely is connected with packoff;

(6) vacuum source is extracted the gas of inside battery out by detector tube, detection medium, the gas space, exhaust tube;

(7) keep evacuated pressure constant at set-point;

(8) whether the hummer of detection control apparatus pipes.

Further, pass through an end of following exhaust tube in the step (3) as for the gas space, the other end is communicated with the vacuum source of vacuum source; In the step (8),, show that there is leakage in tested battery, does not meet the sealing property requirement, otherwise then meets the sealing property requirement if hummer does not pipe.

Compare with present prior art, the present invention adopts the inventive method owing to need not tested battery is immersed in the detection liquid, prevents to detect liquid and enters inside battery, influences battery performance; Battery does not contact with detecting liquid, has reduced production process, reduces cost.The present device volume is little simultaneously, and cost is low, and is easy to use, can detect battery hermetization accurately, is not subjected to the influence of surrounding working environment.Have rational in infrastructure, prevent to detect that liquid enters that inside battery, the little cost of volume are low, optimization production technology, detection efficiency is high and characteristics such as accurate.

Description of drawings

Fig. 1 is that intention is cutd open in embodiment of the invention structure front.

Fig. 2 is a vacuum detecting control device vertical view.

Fig. 3 is that intention is cutd open in the sealed container structure front.

Fig. 4 is that intention is cutd open in battery liquid-filling mouth sealing device front.

Fig. 5 is that intention is cutd open in the jacking gear front.

Embodiment

Describe the present invention with reference to the accompanying drawings below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.

In an embodiment, this lithium-ion battery sealing-performance pick-up unit is by cylinder (1), cylinder stationary platform (2), be used to control the control device (3) of vacuum detecting, seal valve (4), vacuum source (5), airtight container (6), vacuum tightness parameter setting apparatus (7), fluid valve (8) and deflation warning system (9) are formed, a part of space in the airtight container (6) is placed and is detected medium (10), another part is the gas space (11), airtight container (6) is provided with detector tube (12) and exhaust tube (13), one end of detector tube (12) is inserted in and detects in the medium (10), the other end passes airtight container (6) and is communicated with seal valve (4), exhaust tube (13) one ends are communicated with vacuum source (5), the gas space (11) in the other end and the airtight container is communicated with, seal valve (4), detector tube (12), airtight container (6), exhaust tube (13) forms a gas passage, have the space that is used to insert and put lithium ion battery to be measured (15) between seal valve (4) and the pedestal (14), utilize anchor clamps (16) that battery to be detected is clamped.In the legend, embodiment detects the sealing property of automobile with power lithium-ion battery with the inventive method and device, a part of space in airtight container is placed and is detected medium, the detection medium is DMC, its chemical name is a dimethyl carbonate, English name Dimethyl Cabonate, it be a kind of not moisture and not with the alicyclic organic compounds of inside battery material generation chemical reaction, another part is the gas space, in the detection medium in the end insertion airtight container of detector tube, the other end passes the airtight container loam cake and is communicated with packoff, and the gas space is communicated with vacuum source; Put into tested battery in gantry base, start button, photoelectric sensor work, induced cell is in the working position, and jacking gear presses down, and the battery liquid-filling mouth closely is connected with packoff; Vacuum source is extracted the gas of inside battery out by detector tube, detection medium, the gas space, exhaust tube; Keep evacuated pressure constant, make the inside battery space pressure constant at set-point; Whether the hummer of detection control apparatus pipes, if do not pipe, shows that there is leakage in tested battery, does not meet the sealing property requirement, otherwise then meets the sealing property requirement.

Adopt apparatus of the present invention, vacuum source is extracted the gas of inside battery out by detector tube, detection medium, the gas space, exhaust tube, keep evacuated pressure constant in set-point, makes the inside battery space pressure constant, buzzer call, and then battery does not leak; When hummer does not pipe, illustrate that then battery hermetization does not reach technological requirement.Adopt the inventive method owing to need not tested battery is immersed in the detection liquid, prevent to detect liquid and enter inside battery, influence battery performance; Battery does not contact with detecting liquid, has reduced production process, reduces cost.The present device volume is little simultaneously, and cost is low, and is easy to use, can detect battery hermetization accurately, is not subjected to the influence of surrounding working environment.

That the present invention has is rational in infrastructure, prevent to detect that liquid enters that inside battery, the little cost of volume are low, optimization production technology, detection efficiency is high and characteristics such as accurate.

The concrete production operation flow process of accompanying drawing:

1, the latter half space in closed container is placed and is detected medium, the first half is the gas space, in the detection medium in the end insertion airtight container of detector tube, the other end passes the airtight container loam cake and is communicated with packoff, and the gas space is communicated with vacuum source.

2, put into tested battery in gantry base, start button, photoelectric sensor work, induced cell is in the working position, and jacking gear presses down, and the battery liquid-filling mouth closely is connected with packoff.

3, vacuum source is extracted the gas of inside battery out by detector tube, detection medium, the gas space, exhaust tube.

4, keep evacuated pressure constant at set-point.

5, whether the hummer of detection control apparatus pipes, if do not pipe, shows that there is leakage in tested battery, does not meet the sealing property requirement, otherwise then meets the sealing property requirement.

In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.

Claims (10)

1. a large-capacity power lithium-ion battery sealing-performance checkout equipment is characterized in that, comprises control device, packoff, vacuum source and airtight container, and described vacuum source connects described airtight container by first gas piping; Described frame connects described airtight container by second gas piping; Described control device is wired and/or be wirelessly connected to packoff, and/or vacuum source, and/or airtight container, and is used for control and/or detects the vacuum detecting process; A part of space is placed and is detected medium in the described airtight container, and another part is the gas space, and an end of described first gas piping is communicated with the gas space in the airtight container, and an end of described second gas piping is inserted in the detection medium.
2. large-capacity power lithium-ion battery sealing-performance checkout equipment as claimed in claim 1, it is characterized in that, the other end of described first gas piping is communicated with the vacuum source of vacuum source, and the other end of described second gas piping passes the airtight container outer wall and is communicated with packoff.
3. large-capacity power lithium-ion battery sealing-performance checkout equipment as claimed in claim 1 or 2 is characterized in that, described first gas piping is a detector tube, and described second gas piping is an exhaust tube.
4. large-capacity power lithium-ion battery sealing-performance checkout equipment as claimed in claim 1 is characterized in that, described packoff, detector tube, airtight container, exhaust tube form a gas passage.
5. as each described large-capacity power lithium-ion battery sealing-performance checkout equipment among the claim 1-4, it is characterized in that, also comprise frame, its bottom has a base, described packoff is placed on its top, and the space between sealing device and the base is used to insert and put lithium ion battery to be measured.
6. large-capacity power lithium-ion battery sealing-performance checkout equipment as claimed in claim 5, it is characterized in that, described vacuum source is used for the gas of inside battery is extracted out by detector tube, detection medium, the gas space, exhaust tube, keep evacuated pressure constant, make the inside battery space pressure constant at set-point.
7. as claim 1-4, each described large-capacity power lithium-ion battery sealing-performance checkout equipment in 6 is characterized in that, also comprises hummer, and it connects described control device and is used for piping when battery meets seal request detecting.
8. large-capacity power lithium-ion battery sealing-performance checkout equipment as claimed in claim 5 is characterized in that, also comprises jacking gear, and it is installed on the frame, thereby and liftable be used to press down, the battery liquid-filling mouth that makes closely is connected with packoff.
9. as the detection method of large-capacity power lithium-ion battery sealing-performance checkout equipment as described in the claim 1-8, it is characterized in that, adopt following steps:
(1) the latter half space in closed container is placed and is detected medium, and the first half is left the gas space;
(2) with in the detection medium in the end insertion airtight container of detector tube, the other end passes the airtight container loam cake and is communicated with packoff;
(3) gas space is communicated with vacuum source;
(4) put into tested battery in gantry base, start button, photoelectric sensor work;
(5) induced cell is in the working position, and jacking gear presses down, and the battery liquid-filling mouth closely is connected with packoff;
(6) vacuum source is extracted the gas of inside battery out by detector tube, detection medium, the gas space, exhaust tube;
(7) keep evacuated pressure constant at set-point;
(8) whether the hummer of detection control apparatus pipes.
10. as the detection method of large-capacity power lithium-ion battery sealing-performance checkout equipment as described in the claim 9, it is characterized in that, in the step (3) by one with an end of exhaust tube as for the gas space, the other end is communicated with the vacuum source of vacuum source; In the step (8),, show that there is leakage in tested battery, does not meet the sealing property requirement, otherwise then meets the sealing property requirement if hummer does not pipe.
CN 201010215452 2010-06-30 2010-06-30 Large-capacity power lithium-ion battery sealing-performance testing equipment and test method thereof CN101881689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010215452 CN101881689A (en) 2010-06-30 2010-06-30 Large-capacity power lithium-ion battery sealing-performance testing equipment and test method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010215452 CN101881689A (en) 2010-06-30 2010-06-30 Large-capacity power lithium-ion battery sealing-performance testing equipment and test method thereof

Publications (1)

Publication Number Publication Date
CN101881689A true CN101881689A (en) 2010-11-10

Family

ID=43053753

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010215452 CN101881689A (en) 2010-06-30 2010-06-30 Large-capacity power lithium-ion battery sealing-performance testing equipment and test method thereof

Country Status (1)

Country Link
CN (1) CN101881689A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102297752A (en) * 2011-05-18 2011-12-28 奇瑞汽车股份有限公司 Cell shell leak hunting equipment and leak hunting 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
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
CN102494856A (en) * 2011-11-14 2012-06-13 天津力神电池股份有限公司 Automatic detecting equipment of polymer lithium ion battery leaked liquid
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
CN103335795A (en) * 2013-07-02 2013-10-02 中国科学院光电研究院 System for measuring partial pressure leakage rate of vacuum sealing component and measuring method thereof
CN103392119A (en) * 2011-03-01 2013-11-13 株式会社旺爱 Airtightness inspection apparatus
CN105466641A (en) * 2015-10-15 2016-04-06 杭州伯坦科技工程有限公司 Battery leakage rapid detection device and detection method thereof
CN110823468A (en) * 2019-12-16 2020-02-21 中国商用飞机有限责任公司 One-way valve failure detection device and method for detecting failure of one-way valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101464204A (en) * 2007-12-19 2009-06-24 深圳市比克电池有限公司 Lithium ion battery sealing property detection apparatus and detection method using the same
CN201449314U (en) * 2009-06-04 2010-05-05 江苏益茂纯电动汽车有限公司 Leak detecting device for battery

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101464204A (en) * 2007-12-19 2009-06-24 深圳市比克电池有限公司 Lithium ion battery sealing property detection apparatus and detection method using the same
CN201449314U (en) * 2009-06-04 2010-05-05 江苏益茂纯电动汽车有限公司 Leak detecting device for battery

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103392119A (en) * 2011-03-01 2013-11-13 株式会社旺爱 Airtightness inspection apparatus
CN103392119B (en) * 2011-03-01 2014-12-17 株式会社旺爱 Airtightness inspection apparatus
CN102297752A (en) * 2011-05-18 2011-12-28 奇瑞汽车股份有限公司 Cell shell leak hunting equipment and leak hunting 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
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
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
CN102494856A (en) * 2011-11-14 2012-06-13 天津力神电池股份有限公司 Automatic detecting equipment of polymer lithium ion battery leaked liquid
CN102494856B (en) * 2011-11-14 2014-02-12 天津力神电池股份有限公司 Automatic detecting equipment of polymer lithium ion battery leaked liquid
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
CN103335795A (en) * 2013-07-02 2013-10-02 中国科学院光电研究院 System for measuring partial pressure leakage rate of vacuum sealing component and measuring method thereof
CN103335795B (en) * 2013-07-02 2016-05-04 中国科学院光电研究院 Vacuum seal dividing potential drop leakage rate measurement system and measuring method thereof
CN105466641A (en) * 2015-10-15 2016-04-06 杭州伯坦科技工程有限公司 Battery leakage rapid detection device and detection method thereof
CN110823468A (en) * 2019-12-16 2020-02-21 中国商用飞机有限责任公司 One-way valve failure detection device and method for detecting failure of one-way valve

Similar Documents

Publication Publication Date Title
JP4671462B2 (en) Airtight inspection method for nickel metal hydride secondary battery
CN201096594Y (en) Air tightness detection device
CN101408466B (en) Method and device for detecting leakage of shell type heat exchanger
CN203490035U (en) A vacuum actuator online detecting apparatus
CN204924590U (en) A pressurization - evacuation experimental apparatus for leak hunting of helium mass spectrum
CN101726396A (en) Device and method for detecting leak rate of O type rubber sealing ring used for spaceflight
KR101198857B1 (en) Leak inspection device for secondary battery
CN204422142U (en) A kind of robotization air-tightness detection tool of inlet manifold
CN2901275Y (en) Detector for lithium cell seal property
WO2011160317A1 (en) Testing device for detecting leakage of oil outlet valve coupled parts
CN104236826B (en) The device for detecting sealability and method of airbag product
CN100487419C (en) Annular detecting instrument for concrete gas seepage coefficient and detecting method
CN102426082B (en) Leak hunting method before a kind of lithium-ions battery fluid injection sealing
CN201583388U (en) Steel drum helium leakage detecting device
CN203178824U (en) Device for compensating for changes of gas pressure in sealed container, and pressure equalizing device
CN202305339U (en) Explosion-proof pressure test device for air pressure on capacitor case
CN102564708B (en) Device for detecting sealing property of multi-cavity container or multiple containers by helium
MY155772A (en) Leak detection system
CN204855120U (en) A detection mechanism for detecting whether sealed package body leaks gas
CN205940892U (en) Combination workstation foundry goods gas tightness check out test set
CN202533235U (en) Leakage-testing device for oil tank of transformer
CN104502038A (en) System and method for measuring air leakage rate of contact interface of sealing element
CN202182801U (en) Clamp for checking air tightness of pipelines
CN102435402B (en) Device for detecting leak rate of sealing ring
CN100578176C (en) Detecting method for flexible packing products air tightness

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20101110

C12 Rejection of a patent application after its publication