CN101598641B - Device for collecting and testing gas generated in lithium ion battery - Google Patents
Device for collecting and testing gas generated in lithium ion battery Download PDFInfo
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- CN101598641B CN101598641B CN200910304988XA CN200910304988A CN101598641B CN 101598641 B CN101598641 B CN 101598641B CN 200910304988X A CN200910304988X A CN 200910304988XA CN 200910304988 A CN200910304988 A CN 200910304988A CN 101598641 B CN101598641 B CN 101598641B
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- anchor clamps
- sampler
- lithium ion
- battery
- ion battery
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Abstract
The invention discloses a device for collecting and testing gas generated in a lithium ion battery. The device comprises a set of battery clamp and a puncturing sampler; the battery clamp clamps the lithium ion battery(13) to be tested; the battery clamp is provided with a sampling hole(6); and the puncturing sampler is fixedly arranged on the top part of the battery clamp and comprises a sampler cavity(7), the inside of the sampler cavity(7) is provided with a piston(8) capable of being pushed up and down, the position of the piston(8) corresponds to the position of the sampling hole(6) on the battery clamp, the position of a plug of the piston(8), which right aims at the sampling hole(6), is provided with a puncturing channel(15), and a sampling needle (11) is inserted into the puncturing channel(15). The device can directly sample the battery for testing without specially manufacturing and processing the lithium ion battery to be tested, and the operation is easy and convenient, and the detection efficiency is high.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly relate to a kind of collection and detection device of gas generated in lithium ion battery.
Background technology
Advantages such as lithium ion battery has high working voltage, high-energy-density, energy density is big, output power is high, have extended cycle life, non-environmental-pollution, not only on portable communication apparatus and portable electric appts, be used widely, and be widely used in big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool, therefore more and more higher to the performance requirement of lithium ion battery, be the main direction of present each macrocell producer development.
As everyone knows, lithium ion battery partly is made up of positive pole, negative pole, electrolytic solution, barrier film etc., in charge and discharge process, chemical reaction can take place between positive and negative electrode material and the electrolytic solution, thereby the generation gas componant, the existence of gas can cause the performance degradation of lithium ion battery, and the internal resistance of cell increases, expand problems such as distortion, thereby limited the application of lithium ion battery on some exact instrument.
In the development research of lithium ion battery new product new material, to the assay of inside battery aerogenic composition and gas production rate, help to infer the reaction of storeroom in the battery, thereby provide strong foundation for optimizing material mixture ratio and architecture.At present, though it is the gathering-device of having introduced gas generated in lithium ion battery in 200820085749.0 the patent application document that application number is arranged, but the device of this technical scheme introduction needs the special battery of making to detect, and on the battery after the fluid injection, added gas producing device, made lithium ion battery very inconvenient in charging and other test processs.
The present invention attempts can directly realize the sampling and testing to commercial Li-ion batteries by designing a kind of collection and detection device of inside lithium ion cell gas.
Summary of the invention
In view of this, the collection and detection device that the purpose of this invention is to provide a kind of gas generated in lithium ion battery, it need not lithium ion battery to be measured is carried out special facture and processing, can directly realize sampling and testing to battery, simple to operation, and the detection efficiency height is of great practical significance.
For this reason, the invention provides a kind of collection and detection device of gas generated in lithium ion battery, this device includes a cover battery clamp and a bundle hole sampler;
Lithium ion battery 13 to be detected in described battery clamp clamping, described battery clamp is provided with thief hole 6, described bundle hole sampler is fixedly installed on the battery clamp top, described bundle hole sampler includes sampler cavity 7, be provided with the piston 8 that can promote up and down in the described sampler cavity 7, the position of thief hole 6 is corresponding on the position of described piston 8 and the battery clamp, the position that the stick harness of described piston 8 faces thief hole 6 is provided with a bundle hole path 15, is inserted with sampling probe 11 in the described bundle hole path 15.
Preferably, described battery clamp includes anchor clamps 1 and lower clamp 2, the described anchor clamps 1 of going up are fixedlyed connected with lower clamp 2 parallel placements and two ends, the described upward bottom of anchor clamps 1 and the top of lower clamp 2 are respectively arranged with groove 5, the shape of described groove 5, size and the shape of lithium ion battery 13 to be detected, big or small corresponding coupling, the two ends up and down of this lithium ion battery 13 to be detected are separately fixed in the groove 5 of anchor clamps 1 and lower clamp 2.
Preferably, the described equal opening in two ends of going up anchor clamps 1 and lower clamp 2 is provided with bolt pilot hole 10, and described upward anchor clamps 1 and lower clamp 2 are inserted with a bolt 3 on unidirectional bolt pilot hole 10, and the tail end of this bolt 3 is provided with nut 4.
Preferably, described thief hole 6 longitudinal openings are arranged on the anchor clamps 1.
Preferably, be provided with insulation spacer 12 between the groove 5 of described upward anchor clamps 1 and the lithium ion battery to be detected 13.
Preferably, described bundle hole sampler is arranged on described anchor clamps 1 top of going up, and the 10 corresponding position upper sheds of bolt pilot hole are provided with bolt pilot hole 10 on the two ends, the left and right sides of described sampler cavity 7 and the last anchor clamps 1.
Preferably, the cavity of described sampler cavity 7 for adopting transparent material to make.
Preferably, described transparent material is transparent organic glass or polypropylene material.
Preferably, the bottom of described piston 8 is provided with sealing gasket 9.
Preferably, be provided with sealing gasket 9 between described sampler cavity 7 and the last anchor clamps 1.
By above technical scheme provided by the invention as seen, compared with prior art, the invention provides a kind of collection and detection device of gas generated in lithium ion battery, it need not lithium ion battery to be measured is carried out special facture and processing, can directly realize sampling and testing to battery, simple to operation, and the detection efficiency height, be of great practical significance.
Description of drawings
Fig. 1 is the structural representation of the battery clamp of the collection and detection device of composition a kind of gas generated in lithium ion battery provided by the invention;
Fig. 2 is the structural representation of the bundle hole sampler of the collection and detection device of composition a kind of gas generated in lithium ion battery provided by the invention;
Fig. 3 is the structural representation of the collection and detection device of a kind of gas generated in lithium ion battery provided by the invention;
Fig. 4 is the view of collection and detection device after collecting gas of a kind of gas generated in lithium ion battery provided by the invention;
Among the figure, 1 is last anchor clamps, and 2 is lower clamp, and 3 is bolt, and 4 is nut, and 5 is groove, 6 is thief hole, and 7 is the sampler cavity, and 8 is piston, and 9 is sealing gasket, and 10 is the bolt pilot hole, 11 is sampling probe, and 12 is insulation spacer, and 13 is lithium ion battery to be detected, and 14 is utmost point group, and 15 for pricking hole path.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 1 is the structural representation of the battery clamp of the collection and detection device of composition a kind of gas generated in lithium ion battery provided by the invention, Fig. 2 is the structural representation of the bundle hole sampler of the collection and detection device of composition a kind of gas generated in lithium ion battery provided by the invention, and Fig. 3 is the structural representation of the collection and detection device of a kind of gas generated in lithium ion battery provided by the invention;
Referring to Fig. 1 to Fig. 3, the invention provides a kind of collection and detection device of gas generated in lithium ion battery, be used for lithium ion battery to be detected 13 is carried out the aerogenesis sampling and testing, have utmost point group 14 in this lithium ion battery 13, this collection and detection device includes a cover battery clamp and a bundle hole sampler;
In the present invention, described battery clamp is used for clamping lithium ion battery to be detected 13, comprise anchor clamps 1 and lower clamp 2, the described anchor clamps 1 of going up are provided with bolt pilot hole 10 with lower clamp 2 parallel placements and the equal opening in two ends, described upward anchor clamps 1 and lower clamp 2 are inserted with a bolt 3 on unidirectional bolt pilot hole 10, the tail end of this bolt 3 is provided with nut 4;
The described upward bottom of anchor clamps 1 and the top of lower clamp 2 are respectively arranged with groove 5, the shape of described groove 5, size and the shape of lithium ion battery 13 to be detected, big or small corresponding coupling, the two ends up and down of this lithium ion battery 13 to be detected are separately fixed in the groove 5 of anchor clamps 1 and lower clamp 2, thereby lithium ion battery 13 to be detected can be fixed between two anchor clamps, reach the purpose of fixing and balancing battery.
Need to prove that described anchor clamps 1, lower clamp 2 and the groove 5 gone up all can be designed to difformity according to cell shapes, as circle, rectangle, square etc., for reaching the purpose of self-contained battery, the degree of depth of described groove 5 is preferably and is not less than 5mm.
Described anchor clamps 1 longitudinal opening of going up is provided with a thief hole 6, and in the present invention, this thief hole 6 can be arranged on groove 5 center lines on the anchor clamps 1 to the optional position between groove 5 edges.
On the specific implementation, when lithium ion battery 13 to be detected is square battery, described thief hole 6 is provided with on the last anchor clamps 1 of corresponding battery liquid-filling hole one side, and when lithium ion battery 13 to be detected was circular batteries, described thief hole 6 was provided with the battery bottom home position is corresponding and goes up on the anchor clamps 1.
In order to prevent that battery is short-circuited, in described groove 5, also be provided with insulation spacer 12, so in when test, between the groove 5 and lithium ion battery to be detected 13 of insulation spacer 12 anchor clamps 1 on described.
In the present invention, described bundle hole sampler is arranged on described anchor clamps 1 top of going up, include sampler cavity 7, the 10 corresponding position upper sheds of bolt pilot hole are provided with bolt pilot hole 10 on the two ends, the left and right sides of described sampler cavity 7 and the last anchor clamps 1, be used to insert above-mentioned bolt 3, realize sampler cavity 7 and last anchor clamps 1 are fixed;
On the specific implementation, the described anchor clamps 1 and lower clamp 2 employing stainless steels or other hard metals gone up are made, and described sampler cavity 7 adopts transparent materials to make, and is preferably and adopts transparent organic glass or polypropylene material to make.
Be provided with the piston 8 that can promote up and down in the described sampler cavity 7, the position of thief hole 6 is corresponding on the position of described piston 8 and the last anchor clamps 1;
The position that the stick harness of described piston 8 faces thief hole 6 is provided with a bundle hole path 15, is inserted with sampling probe 11 in the described bundle hole path 15, and described bundle hole path 15 is the passage of hollow cylinder shape, and its inner space is the bundle hole path of this sampling probe 11.
The bottom of described piston 8 is provided with sealing gasket 9, is used for intercepting pricking hole path 15 and thief hole 6, prevents that inside battery gas from from pricking hole path 15 and thief hole 6 leakages, need to prove that according to the number of times of pricking the hole, the user can change sealing pad 9;
Need to prove, also be provided with sealing gasket 9 between described sampler cavity 7 and the last anchor clamps 1, thereby can prevent that equally gas from leaking;
In the present invention, described sealing gasket 9 is the sealing gasket of elastic material, is preferably to adopt the silica gel sealing pad; The shape of described sampling probe 11 and size and shape, the big or small corresponding coupling of pricking hole path 15.
Described sampler cavity 7 outer walls are provided with scale, can characterize sampler cavity 7 gas inside volume or pressure, are used for by observing the gas production rate that obtains battery that moves of piston 8.
Need to prove,, at first lithium ion battery 13 to be detected is fixed in two anchor clamps, then sampler is placed on the top of anchor clamps 1, will go up anchor clamps 1 and sampler is fixed with bolt in when test; When taking a sample, sampling probe 11 is inserted into to be pricked in the hole path 15, apply external force, make between the stick harness of sampling probe 11 and piston 8 and fit tightly, and see through thief hole 6 and prick and wear sealing gasket 9, the battery case (battery cover or battery floor) that pierces through lithium ion battery 13 to be detected then enters into inside battery, then sampling probe 11 is extracted out, gas in the battery promptly can promote piston 8 by this thief hole 6 and move in sampler cavity 7, after treating that piston 8 is stablized, by the scale that is provided with on sampler cavity 7 outer walls, read the reading of piston 8 indicated scales, promptly obtain the gas production rate of lithium ion battery 13 to be detected.
Need to prove, be used to test the sealing gasket 9 that the gas sample pin of chromatogram or gas chromatography mass spectrometry pierces through on the piston 8 and directly take a sample in pricking hole path 15, also can carry out analytical test the inside battery aerogenic composition.
By above technical scheme provided by the invention as seen, the invention provides a kind of collection and detection device of gas generated in lithium ion battery, it need not lithium ion battery to be measured is carried out special facture and processing, can directly realize sampling and testing to battery, simple to operation, and the detection efficiency height is of great practical significance.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the collection and detection device of a gas generated in lithium ion battery is characterized in that, this device includes a cover battery clamp and a bundle hole sampler; Described battery clamp includes anchor clamps (1) and lower clamp (2), described bundle hole sampler is arranged on described anchor clamps (1) top of going up, described bundle hole sampler includes sampler cavity (7), the two ends, the left and right sides of described sampler cavity (7) and last anchor clamps (1) are gone up bolt pilot hole (10) corresponding position upper shed and are provided with bolt pilot hole (10), be used for inserting bolt (3), realize sampler cavity (7) and last anchor clamps (1) are fixed;
Lithium ion battery to be detected (13) in described battery clamp clamping, described battery clamp is provided with thief hole (6), described bundle hole sampler is fixedly installed on the battery clamp top, described bundle hole sampler includes sampler cavity (7), be provided with the piston (8) that can promote up and down in the described sampler cavity (7), the position of thief hole (6) is corresponding on the position of described piston (8) and the battery clamp, the position that the stick harness of described piston (8) faces thief hole (6) is provided with a bundle hole path (15), is inserted with sampling probe (11) in the described bundle hole path (15);
Described sampler cavity (7) outer wall is provided with scale.
2. collection and detection device as claimed in claim 1, it is characterized in that, the described anchor clamps (1) of going up are fixedlyed connected with parallel placement of lower clamp (2) and two ends, the described upward bottom of anchor clamps (1) and the top of lower clamp (2) are respectively arranged with groove (5), the shape of described groove (5), size and the shape of lithium ion battery to be detected (13), big or small corresponding coupling, the two ends up and down of this lithium ion battery to be detected (13) are separately fixed in the groove (5) of anchor clamps (1) and lower clamp (2).
3. collection and detection device as claimed in claim 2, it is characterized in that, the described equal opening in two ends of going up anchor clamps (1) and lower clamp (2) is provided with bolt pilot hole (10), described upward anchor clamps (1) and lower clamp (2) are inserted with a bolt (3) on unidirectional bolt pilot hole (10), the tail end of this bolt (3) is provided with nut (4).
4. collection and detection device as claimed in claim 2 is characterized in that, described thief hole (6) longitudinal opening is arranged on the anchor clamps (1).
5. collection and detection device as claimed in claim 2 is characterized in that, is provided with insulation spacer (12) between the groove (5) of described upward anchor clamps (1) and the lithium ion battery to be detected (13).
6. collection and detection device as claimed in claim 1 is characterized in that, the cavity of described sampler cavity (7) for adopting transparent material to make.
7. collection and detection device as claimed in claim 6 is characterized in that, described transparent material is transparent organic glass or polypropylene material.
8. collection and detection device as claimed in claim 1 is characterized in that, the bottom of described piston (8) is provided with sealing gasket (9).
9. collection and detection device as claimed in claim 2 is characterized in that, is provided with sealing gasket (9) between described sampler cavity (7) and the last anchor clamps (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910304988XA CN101598641B (en) | 2009-07-30 | 2009-07-30 | Device for collecting and testing gas generated in lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910304988XA CN101598641B (en) | 2009-07-30 | 2009-07-30 | Device for collecting and testing gas generated in lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101598641A CN101598641A (en) | 2009-12-09 |
| CN101598641B true CN101598641B (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910304988XA Expired - Fee Related CN101598641B (en) | 2009-07-30 | 2009-07-30 | Device for collecting and testing gas generated in lithium ion battery |
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| CN (1) | CN101598641B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846597B (en) * | 2010-05-31 | 2011-11-23 | 深圳市豪鹏科技有限公司 | Gas sampling method and device |
| CN102879236B (en) * | 2011-07-15 | 2015-01-07 | 中国石油化工股份有限公司 | Device and method for breaking tank and extracting gas |
| CN102445364A (en) * | 2011-09-28 | 2012-05-09 | 天津力神电池股份有限公司 | Gathering device of gas produced in lithium ion battery |
| CN105510174B (en) * | 2014-09-23 | 2018-12-04 | 宁德时代新能源科技股份有限公司 | Apparatus and method for detecting gas inside battery |
| CN106289396B (en) * | 2016-08-12 | 2018-07-17 | 合肥国轩高科动力能源有限公司 | Detection and analysis device for measuring total gas production rate and gas production components in battery |
| CN106353462B (en) * | 2016-11-18 | 2019-07-09 | 宁德时代新能源科技股份有限公司 | Battery cell gas production detection device and detection method |
| CN107727460B (en) * | 2017-06-20 | 2024-10-22 | 东莞市创明电池技术有限公司 | Gas collecting device in cylindrical battery |
| CN109932222B (en) * | 2017-12-19 | 2022-09-27 | 中国科学院物理研究所 | Gas collecting device for collecting gas in battery |
| CN109935919B (en) * | 2017-12-19 | 2022-05-17 | 中国科学院物理研究所 | Gas collecting device for battery |
| CN109540244A (en) * | 2018-07-03 | 2019-03-29 | 蜂巢能源科技有限公司 | Battery check device, battery detection equipment and battery detecting structure |
| CN114544270B (en) * | 2021-08-10 | 2024-04-30 | 万向一二三股份公司 | Sampling device and quantitative analysis method for gas in soft-package lithium ion battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188018Y (en) * | 2008-04-11 | 2009-01-28 | 宁波伊司达锂电池有限公司 | Aerogenesis collection and detection apparatus within lithium ion battery |
| CN201476992U (en) * | 2009-07-30 | 2010-05-19 | 天津力神电池股份有限公司 | Collection and detection device for gas generated inside lithium ion battery |
-
2009
- 2009-07-30 CN CN200910304988XA patent/CN101598641B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188018Y (en) * | 2008-04-11 | 2009-01-28 | 宁波伊司达锂电池有限公司 | Aerogenesis collection and detection apparatus within lithium ion battery |
| CN201476992U (en) * | 2009-07-30 | 2010-05-19 | 天津力神电池股份有限公司 | Collection and detection device for gas generated inside lithium ion battery |
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| Publication number | Publication date |
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| CN101598641A (en) | 2009-12-09 |
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Granted publication date: 20110720 Termination date: 20120730 |