CN103123289A - Leakage test device used for bag of rechargeable battery - Google Patents

Leakage test device used for bag of rechargeable battery Download PDF

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Publication number
CN103123289A
CN103123289A CN2012100766825A CN201210076682A CN103123289A CN 103123289 A CN103123289 A CN 103123289A CN 2012100766825 A CN2012100766825 A CN 2012100766825A CN 201210076682 A CN201210076682 A CN 201210076682A CN 103123289 A CN103123289 A CN 103123289A
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CN
China
Prior art keywords
rechargeable battery
bag
air
leakage tester
test cabinet
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN2012100766825A
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Chinese (zh)
Inventor
郑智龙
金成柱
崔九永
李丁渊
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Samsung SDI Co Ltd
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Samsung SDI Co Ltd
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Filing date
Publication date
Application filed by Samsung SDI Co Ltd filed Critical Samsung SDI Co Ltd
Publication of CN103123289A publication Critical patent/CN103123289A/en
Pending legal-status Critical Current

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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
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4228—Leak testing of cells or batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The present invention provides a leakage test device used for a bag of a rechargeable battery. The leakage test device used for the bag of the rechargeable battery can detect the tiny leakage of the bag, and comprises a lower shell, an upper shell, a supply valve and a discharging valve. The lower shell forms a part of a test chamber for accommodating the rechargeable battery, and the rechargeable battery possesses an electrode assembly in the bag. The upper shell is connected with the lower shell to make the test chamber in an airtight state, the supply valve supplies air to an air jet which is connected with the test chamber, and the discharging valve discharges the air in the test chamber from an air outlet which is connected with the test chamber.

Description

The leakage tester that is used for the bag of rechargeable battery
Technical field
The present invention relates to a kind of leakage tester of the bag that is used for rechargeable battery of minute leakage of detection bag.
Background technology
Along with the technical development of mobile device, the demand as the rechargeable battery of the energy is increased, and need high-energy, the size that reduces and the weight that reduces and thickness.For example, rechargeable battery can comprise lithium ion polymer battery, and it is by utilizing polymer solid electrolyte film to form the thickness that flat board reduces rechargeable battery effectively.
The lithium ion polymer rechargeable battery is by at two stacking positive poles in surface and negative pole and will form electrode assemblie be used to polymer solid electrolyte film that lithium ion passes through is inserted between positive pole and negative pole, and two surfaces by case material being arranged on electrode assemblie engage the periphery hot melt of case material and form bag, thereby the lithium ion polymer rechargeable battery forms electrode assemblie is contained in structure in bag.
Due to the physical strength of the bag of rechargeable battery lower than the physical strength of the cylindrical or square housing of being made by metal material, so bag can be damaged or the hole be easily occurred because of external environment condition.That is, may form in bag visual inspection less than pin hole.
Pin hole produces the gas leakage from the inside of bag.Therefore, by operator's smell sensing carry out to rechargeable battery the bag leak-testing.Yet, in the contaminated situation of environment, when Leakage Gas is faint, may can't detect the leakage of bag around.
Only be the understanding of increase to background of the present invention in the disclosed above-mentioned information of this background parts, so it may comprise the information that is not formed on the known to those skilled in the art prior art of this country.
Summary of the invention
The present invention is devoted to provide a kind of leakage tester of the bag that is used for rechargeable battery of advantage of the minute leakage with detection bag.
Exemplary embodiment of the present invention provide a kind of for rechargeable battery the bag leakage tester, this leakage tester comprises: lower house, described lower house forms the part of the test cabinet that holds rechargeable battery, and described rechargeable battery has electrode assemblie in bag; Upper shell, described upper shell are connected to lower house to complete the airtight conditions of test cabinet; Supply valve, described supply valve supplies air to the air jet that is connected to test cabinet; Bleed valve, described bleed valve is from being connected to the indoor air of air out emission test of test cabinet.
Lower house and upper shell can be by being positioned at a relative side chain connection and can be fastened by the clamp structure that is positioned at the hinge opposite side.
Clamp structure can comprise: fixed support, described fixed support are fixed to lower house and open wide towards a side; Bar, described bar are arranged in upper shell and corresponding to fixed support and rotate and the formation spiral; Nut member, the movement that described nut member carries out to bar by screw engagement are secured to fixed support or separate with fixed support.
Lower house can form the air inlet chamber that is connected to air jet and air inlet chamber is connected to supply valve.
Upper shell can form the air venting chamber that is connected to air out and the air venting chamber is connected to bleed valve.
The leakage tester that is used for the bag of rechargeable battery also can comprise the pressure gauge that is arranged between air venting chamber and bleed valve, to show the pressure in test cabinet.
Lower house can comprise the support section of the outer edge that is formed on test cabinet, to support and corresponding to the lower outer edge of rechargeable battery.
Upper shell can comprise the fixed part of the upside that is formed on test cabinet, to support the upside of rechargeable battery.
The leakage tester that is used for the bag of rechargeable battery also can comprise the seal that is arranged on sealed groove, and described sealed groove forms to be supported by upper shell along the outward flange of lower house.
In this manner, in exemplary embodiment of the present invention, rechargeable battery is inserted in test cabinet, air is provided with airtight conditions, and continue the predetermined time section under this state after, with air venting, and rechargeable battery is taken out from closed chamber, and with the naked eye check the state of bag.Can whether expand to check according to bag the leakage of rechargeable battery.
Description of drawings
Fig. 1 is the skeleton view that the leakage tester of the bag that is used for according to an exemplary embodiment of the present invention rechargeable battery is shown.
Fig. 2 is the skeleton view that illustrates for the open mode of the leakage tester of the bag of the rechargeable battery of Fig. 1.
Fig. 3 is the skeleton view that illustrates as the rechargeable battery of test target.
Fig. 4 is the decomposition diagram that the rechargeable battery of Fig. 3 is shown.
Fig. 5 is the cut-open view that illustrates along the leakage tester of the V-V line of Fig. 1 intercepting.
Embodiment
To with reference to accompanying drawing, the present invention be described more fully hereinafter, exemplary embodiment of the present invention shown in the drawings.Should know as those skilled in the art, in the situation that all do not break away from the spirit or scope of the present invention, described embodiment can modify in multiple different mode.It is in fact exemplary and nonrestrictive that accompanying drawing and description will be regarded as.Identical label represents identical element all the time in instructions.
Fig. 1 is the skeleton view that the leakage tester of the bag that is used for rechargeable battery is shown according to an exemplary embodiment of the present invention, and Fig. 2 is the skeleton view that illustrates for the open mode of the leakage tester of the bag of the rechargeable battery of Fig. 1.
See figures.1.and.2, the leakage tester that is used for the bag of rechargeable battery comprises lower house 2 and upper shell 3 and the supply valve 4 that is connected to test cabinet 1 and the bleed valve 5 that forms test cabinet 1.
Test cabinet 1 holds bag type rechargeable battery 100 (seeing Fig. 3 and Fig. 4) and injects air in bag 20 and take out rechargeable battery 100 from test cabinet 1, thereby test rechargeable battery 100, described bag type rechargeable battery 100 are the test targets that form in bag 20 by electrode assemblie 10 is contained in.
Lower house 2 is set in sidepiece at bottom and the lower peripheral place of test cabinet 1, and upper shell 3 is set in sidepiece at top and the upper peripheral place of test cabinet 1.
That is, the sidepiece of test cabinet 1 is set by lower house 2 and upper shell 3.The test cabinet 1 that is made of lower house 2 and upper shell 3 forms and forms and stop airtight conditions.
In current exemplary embodiment, lower house 2 and upper shell 3 form a test cabinet 1, but can form the leakage that a plurality of (not shown) also can once be tested the bag of a plurality of rechargeable batteries 100.
Supply valve 4 can be by being connected to test cabinet 1 air jet 41 to test cabinet 1 supply air or block air supply to test cabinet 1.Lower house 2 forms the air inlet chamber 42 that is connected to air jet 41.Air jet 41 can form a plurality of in lower house 2.That is, lower house 2 is connected to supply valve 4 with air inlet chamber 42.
Air inlet chamber 42 connects supply valve 4 and air jets 41, and the supply of slow down air is impacted and to a plurality of air jets 41 supplies and spray the air of conforming pressures thus.
Air out 51 dischargings of bleed valve 5 by being connected to test cabinet 1 are from the air of test cabinet 1 inside or block the discharging of air.Upper shell 3 forms the air venting chamber 52 that is connected to air out 51.That is, upper shell 3 is connected to bleed valve 5 with air venting chamber 52.
Pressure gauge 6 is arranged between air venting chamber 52 and bleed valve 5, to show the pressure in test cabinet 1.Air venting chamber 52 Bonding pressure meters 6 and air out 51 are stably to show the pressure in test cabinet 1.
Lower house 2 and upper shell 3 set the size of test cabinets 1, and by connecting to open and close the leakage of test cabinet and test bag with hinge 61 in an opposed facing side, and the clamp structure 62 at the opposite side place by being positioned at hinge 61 carries out fastening.
For example, clamp structure 62 can comprise the fixed support 621 that is arranged in lower house 2 and be arranged in upper shell 3 with the bar corresponding with fixed support 621 622 and nut member 623.
Fixed support 621 is fixed to the exterior side surfaces of lower house 2 and forms hatch frame in the front side.Bar 622 is arranged on the exterior side surfaces of upper shell 3, and rotation is with corresponding to fixed support 621 (rotating to the solid line state from the dotted line state of Fig. 1), and forms spiral.
The movement that nut member 623 carries out to bar 622 by screw engagement is secured to fixed support 621 or discharges from tightening state.Nut member 623 can form taper shape.Nut member 623 inserts in fixed support 621 with being forced to property of conical structure ground, thereby is secured to fixed support 621.
Fig. 3 is the skeleton view that illustrates as the rechargeable battery 100 of test target, and Fig. 4 is the decomposition diagram that illustrates as the rechargeable battery 100 of test target.
With reference to Fig. 3 and Fig. 4, the rechargeable battery 100 that is used as test target in current exemplary embodiment is shown as the decomposition diagram of electrode assemblie 10 and bag 20.See figures.1.and.2, comprise the bag 20 of electrode assemblie 10 and hold electrodes assembly 10 according to the rechargeable battery of current exemplary embodiment.
Electrode assemblie 10 is provided with positive pole 11 and negative pole 12 and separator 13 and inserts between positive pole 11 and negative pole 12, and electrode assemblie 10 forms jelly-roll (jelly roll) form by reel positive pole 11, negative pole 12 and separator 13.With being used for making the polymer solid electrolyte film that lithium ion passes through form separator 13.
Anodal 11 and negative pole 12 comprise with active material be applied to metallic film collector coating zone and do not apply active material and the uncoated zone of the collector that is set to expose, and positive pole 11 and negative pole 12 are connected respectively to positive wire lug plate 14 and negative wire lug plate 15 by uncoated zone.Positive wire lug plate 14 and negative wire lug plate 15 are drawn from the surface, the same side of electrode assemblie 10.
By the centre, resistive element 17 is set, positive wire lug plate 14 is connected to and connects lug plate 16.Resistive element 17 has at default temperature and increases to infinitely-great positive temperature coefficient of resistance, and resistive element 17 blocks positive wire lug plate 14 and the electric current that is connected between lug plate 16 when the temperature levels of rechargeable battery 100 reaches setting value.
Bag 20 can form the Multilayer Structure of the outside that surrounds electrode assemblie 10.For example, bag 20 comprises and forms inside surface and carry out insulation and polymer sheet 121 that hot melt engages, the sheet metal 123 that forms outside surface and carry out polyethylene terephthalate (PET) plate, nylon sheet or the PET-nylon composite plate 122 that protection operates (hereinafter for easy and take " nylon sheet " as example) and physical strength is provided.Sheet metal 123 is inserted between polymer sheet 121 and nylon sheet 122 and can be formed by for example aluminium sheet.
In addition, electrode assemblie 10 forms the slab construction of rectangular parallelepiped, and bag 20 forms the slab construction of rectangular parallelepiped thus.Rechargeable battery intactly forms the slab construction of rectangular parallelepiped thus by forming around electrode assemblie 10 with bag 20.
Fig. 5 is the cut-open view that illustrates along the leakage tester of the V-V line of Fig. 1 intercepting.With reference to Fig. 5, lower house 2 forms support section 21 in the inside of test cabinet 1 outer edge.The downside that support section 21 supports as the rechargeable battery 100 of test target is with the lower external margin corresponding to rechargeable battery 100.
Support section 21 is set to separated a plurality of by the gap, to support rechargeable battery 100, thus, when forming pin hole and inject air into bag 20 when interior in bag 20, the bag 20 of expansion is the resistance in the bottom of tested person chamber 1 not.
Upper shell 3 is at upside place's formation fixed part 31 of test cabinet 1.The top that fixed part 31 supports as the rechargeable battery 100 of test target is with the upside corresponding to rechargeable battery 100.
Fixed part 31 is set to a plurality of with fixing rechargeable battery 100, thereby prevents from vertically moving in test cabinet 1 as the rechargeable battery 100 of test target.In addition, fixed part 31 can be formed with the pad by sponge, synthetic resin or elastomeric material, so that the dilatational disturbance with bag 20 minimizes and bag 20 do not caused damage in when test.
Lower house 2 forms sealed groove 23 along the outward flange relative with upper shell 3.Seal 24 is attached to sealed groove 23 and forms the airtight construction of test cabinet 1 when compressed at the respective surfaces place of the upper shell relative with it 3.
Hereinafter, detailed description is utilized the proving installation of current exemplary embodiment test the method for leakage of the bag 20 of rechargeable battery 100.
At first, by opening upper shell 3 (state of Fig. 2) and by closing upper shell 3, rechargeable battery 100 being arranged at test cabinet 1, clamp structure 62 is fastened to fixed support 621 (state of Fig. 2).
By closing bleed valve 5 and opening supply valve 4, supply air to test cabinet 1 and reach set pressure.When reaching set pressure by the pressure that checks pressure gauge 6 test cabinets 1, close supply valve 4, and this state is kept reached the default time period.
After the set pressure operation reaches the default time period, make the pressure decreased of test cabinet 1 by closing bleed valve 5.By discharging fastening clamp structure 62 from fixed support 621, open upper shell 3.
Rechargeable battery 100 is taken out and checks the state of bag 20 from test cabinet 1.In this case, when bag 20 expands, determine bag 20 because pin hole lost efficacy, when bag 20 is kept original form, determine that bag 20 is normal.
Although described the present invention in conjunction with being considered at present practical exemplary embodiment, but should be clear, the present invention is not limited to disclosed embodiment, but in contrast, the invention is intended to cover various modifications and equivalent arrangements in the spirit and scope that are included in appended claims.
＜label declaration 〉
1: test cabinet 2: lower house
3: upper shell 4: supply valve
5: bleed valve 6: pressure gauge
10: electrode assemblie 11,12: positive pole and negative pole
13: separator 14,15: anodal and negative wire lug plate
16: connect lug plate 17: resistive element
20: bag 21: support section
23: sealed groove 24: seal
31: fixed part 41: air jet
42: air inlet chamber 51: air out
52: air venting chamber 61: hinge
62: clamp structure 100: rechargeable battery
121: polymer sheet 122: nylon sheet
123: sheet metal 621: fixed support
622: bar 623: nut member.

Claims (9)

1. leakage tester that is used for the bag of rechargeable battery, described leakage tester comprises:
Lower house, described lower house forms the part of the test cabinet that holds described rechargeable battery, and described rechargeable battery has electrode assemblie in bag;
Upper shell, described upper shell are connected to described lower house to complete the airtight conditions of described test cabinet;
Supply valve, described supply valve supplies air to the air jet that is connected to described test cabinet;
Bleed valve, the described bleed valve air in the described test cabinet of air out discharging that is connected to described test cabinet.
2. leakage tester as claimed in claim 1, wherein, chain connection by being positioned at a relative side of described lower house and described upper shell is also fastened by the clamp structure that is positioned at described hinge opposite side.
3. leakage tester as claimed in claim 2, wherein, described clamp structure comprises:
Fixed support, described fixed support are fixed to described lower house and open wide towards a side;
Bar, described bar are arranged in described upper shell and corresponding to described fixed support and rotate and the formation spiral;
Nut member, the movement that described nut member carries out to described bar by screw engagement are secured to described fixed support or separate with described fixed support.
4. leakage tester as claimed in claim 1, wherein, described lower house forms and is connected to the air inlet chamber of described air jet and described air inlet chamber is connected to described supply valve.
5. leakage tester as claimed in claim 4, wherein, described upper shell forms the air venting chamber that is connected to described air out and described air venting chamber is connected to described bleed valve.
6. leakage tester as claimed in claim 5, wherein, described leakage tester also comprises the pressure gauge that is arranged between described air venting chamber and described bleed valve, to show the pressure in described test cabinet.
7. leakage tester as claimed in claim 4, wherein, described lower house comprises the support section of the outer edge that is formed on described test cabinet, to support and corresponding to the lower outer edge of described rechargeable battery.
8. leakage tester as claimed in claim 7, wherein, described upper shell comprises the fixed part of the upside that is formed on described test cabinet, to support the upside of described rechargeable battery.
9. leakage tester as claimed in claim 1, described leakage tester also comprises the seal that is arranged in sealed groove, described sealed groove forms to be supported by described upper shell along the outward flange of described lower house.
CN2012100766825A 2011-11-17 2012-03-21 Leakage test device used for bag of rechargeable battery Pending CN103123289A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110120468A KR101955396B1 (en) 2011-11-17 2011-11-17 Leak test device for pouch of rechargeable battery
KR10-2011-0120468 2011-11-17

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CN103123289A true CN103123289A (en) 2013-05-29

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CN107894304A (en) * 2017-09-29 2018-04-10 芜湖普威技研有限公司 New energy battery bag air-tightness detection tool
CN108767339A (en) * 2018-05-10 2018-11-06 无锡格林司通自动化设备有限公司 A kind of pressure regulating system checked for lithium rechargeable battery leakage
CN110754012A (en) * 2017-10-26 2020-02-04 株式会社Lg化学 Assembly for measuring pressure change of pouch type battery and method for measuring pressure change of pouch type battery using the same
CN110873625A (en) * 2018-08-31 2020-03-10 亚德克公司 Battery leakage testing device and method
CN111699372A (en) * 2019-06-21 2020-09-22 深圳市大疆创新科技有限公司 Air tightness detection device, detection system and detection method

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KR101719408B1 (en) * 2015-02-11 2017-03-23 주식회사 엘지화학 Jig for detecting fault of secondary cell and method for detecting fault of secondary cell using the same
KR102381108B1 (en) 2015-06-04 2022-03-30 에스케이온 주식회사 Leak inspection apparatus and method of secondary battery
KR102092270B1 (en) * 2015-10-12 2020-03-23 주식회사 엘지화학 Apparatus and method for detecting leakage of pouch-typed battery cell
KR102109224B1 (en) 2015-11-30 2020-05-11 주식회사 엘지화학 System and method for monitoring battery case
US20230155191A1 (en) * 2020-11-23 2023-05-18 Lg Energy Solution, Ltd. Battery Cell Evaluation Method and Battery Cell Evaluation Device
KR20230068243A (en) 2021-11-10 2023-05-17 주식회사 원익피앤이 Apparatus for manufacturing pouch type secondary battery and method for detecting pouch leakage
KR102469953B1 (en) 2022-07-29 2022-11-23 주식회사 메타덱스터 VOC Leakage Gas Detection equipment of Battery Injected with Electrolyte and Detection method using the same
KR102487786B1 (en) 2022-10-28 2023-01-12 주식회사 메타덱스터 VOC Leakage Gas Detection equipment for battery using vacuum chamber and Detection method using the same

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CN107894304A (en) * 2017-09-29 2018-04-10 芜湖普威技研有限公司 New energy battery bag air-tightness detection tool
CN110754012A (en) * 2017-10-26 2020-02-04 株式会社Lg化学 Assembly for measuring pressure change of pouch type battery and method for measuring pressure change of pouch type battery using the same
US11489228B2 (en) 2017-10-26 2022-11-01 Lg Energy Solution, Ltd. Component for measuring pressure change in pouch-type battery, and method for measuring pressure change in pouch-type battery by using same
CN108767339A (en) * 2018-05-10 2018-11-06 无锡格林司通自动化设备有限公司 A kind of pressure regulating system checked for lithium rechargeable battery leakage
CN108767339B (en) * 2018-05-10 2021-08-10 无锡格林司通自动化设备有限公司 Pressure adjusting system for leakage inspection of lithium ion secondary battery
CN110873625A (en) * 2018-08-31 2020-03-10 亚德克公司 Battery leakage testing device and method
CN111699372A (en) * 2019-06-21 2020-09-22 深圳市大疆创新科技有限公司 Air tightness detection device, detection system and detection method

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KR101955396B1 (en) 2019-03-08

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