CN102868003A - Device and method for detecting internal gas pressure of lithium ion battery - Google Patents
Device and method for detecting internal gas pressure of lithium ion battery Download PDFInfo
- Publication number
- CN102868003A CN102868003A CN2012103102652A CN201210310265A CN102868003A CN 102868003 A CN102868003 A CN 102868003A CN 2012103102652 A CN2012103102652 A CN 2012103102652A CN 201210310265 A CN201210310265 A CN 201210310265A CN 102868003 A CN102868003 A CN 102868003A
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- Prior art keywords
- lithium ion
- mesuring battary
- gas pressure
- venting cavity
- battery
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- 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.)
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Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 31
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 12
- 238000000034 method Methods 0.000 title abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000013022 venting Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 15
- 239000003960 organic solvent Substances 0.000 claims description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000001467 acupuncture Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
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Classifications
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- 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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a device and a method for detecting the internal gas pressure of a lithium ion battery, wherein the internal gas pressure of the lithium ion battery is detected according to a Boyle's theorem set equation P1×V1=P2×（V1V), wherein: p1And V1For the original internal pressure and volume of the cell, P2And delta V are respectively the air pressure and the gas volume change after the battery is exhausted, and P is measured by using the device provided by the invention2And Δ V, and then measuring V1P can be calculated1. The invention realizes the detection of the internal gas pressure of the battery through the structure of the U-shaped pipe, has simple structure and convenient measurement, realizes the real-time and effective detection of the internal gas pressure of the lithium ion battery, guides the design of the structure of the lithium ion battery body and a safety valve, and plays an important role in eliminating the potential safety hazard of the lithium ion battery.
Description
Technical field
The present invention relates to the lithium ion battery field, relate in particular to a kind of inside lithium ion cell gas pressure detection unit and method.
Background technology
Along with the problem that energy shortage and ambient pressure bring, lithium ion battery will be widely used, electric automobile industry particularly, and lithium ion battery will be widely used, so aobvious being even more important of its security performance.Lithium ion battery is an airtight reaction vessel, there be decomposition reaction, electrolyte and negative reaction, electrolyte and the anodal reaction of electrolyte in inside battery, under some abuse conditions and under the particular surroundings, these reactions all can aggravate especially, such as overcharge, mistake is put, under short circuit and the hot environment, these react aggravation, produce a large amount of gas, the gathering of gas causes the interior voltage rise of battery high, if can not in time discharge, explosion phenomenon to occur, security incident will occur.All be to use explosion-proof valve to solve this problem at present in the industry, but the design of the limiting pressure of explosion-proof valve must be in safe range, the too high then inside battery of limiting pressure gas can not in time be discharged and be caused battery explosion, limiting pressure is crossed to hang down and then can be caused the battery premature failure again, reduces battery.Therefore measure the inside battery gas pressure extremely important.
Summary of the invention
The object of the invention is exactly in order to remedy the defective of prior art, a kind of inside lithium ion cell gas pressure detection unit and method to be provided.
The present invention is achieved by the following technical solutions:
A kind of inside lithium ion cell gas pressure detection unit, include U-shaped pipe and means of deflation that inside is placed with liquid, described means of deflation includes, lower battery clamping plate, mesuring battary is placed between the two battery clamping plate, fix by screw rod between the two battery clamping plate, described mesuring battary top is fixed with the venting cavity, the venting cavity passes described upper battery clamping plate and is tightly connected with upper battery clamping plate, described venting cavity bottom is air inlet, the side is provided with the gas outlet, end sealing, the gas outlet is connected with the right cavity of described U-shaped pipe by tracheae, the gas outlet upside is placed with piston in the venting cavity, also be placed with the bundle vent needle in the venting cavity, the most advanced and sophisticated contact measured battery of described bundle vent needle top is used for pricking the hole at mesuring battary, the bundle vent needle other end passes piston and venting cavity top and is fixed on the handle, and described handle is supported and driven the bundle vent needle and moves up and down by bracing frame.
A kind of inside lithium ion cell gas pressure detection method that adopts said apparatus to carry out comprises the steps:
(1) driving the bundle vent needle by handle moves down, the acupuncture treatment hole is pricked at mesuring battary aperture, gas in the mesuring battary enters in the venting cavity and from the gas outlet and enters in the right cavity of arranging U-shaped pipe in the tracheae, until the liquid level on both sides is static in the U-shaped pipe, recording the liquid level difference is h, air pressure inside P2=P0+ ρ gh after the mesuring battary exhaust, inside battery gas volume variation delta V=1/2hS, wherein P0 is atmospheric pressure, and ρ is U-shaped liquid in pipe density, and S is that U-shaped tube section is long-pending;
(2) taking-up of the mesuring battary after the exhaust is weighed, be designated as W1, mesuring battary is put in the container that fills with organic solvent, and fully submergence, container is put into vacuum tank, constantly vacuumize, the gas volume of discharging in the filled with organic solvent mesuring battary, take out mesuring battary and the organic solvent on surface is removed clean and weighed be designated as W2, the gas volume that mesuring battary is discharged is V1=(W2-W1)/ρ 1, ρ 1 is organic solvent density;
(3) according to Boyle's law P1V1=P2(V1+ Δ V), calculate gas interior pressure P 1 to be measured.
Described inside lithium ion cell gas pressure detection unit is characterized in that: be respectively equipped with upper and lower sealing gasket between the above and below of described mesuring battary and the upper and lower battery clamping plate.
Described inside lithium ion cell gas pressure detection unit is characterized in that: described venting cavity diameter is 10 to 30mm, and material is stainless steel; Described bundle vent needle syringe needle diameter is 1 to 2mm, and material is stainless steel.
Described inside lithium ion cell gas pressure detection unit is characterized in that: the liquid in the described U-shaped pipe is ethanol, ethyl acetate.
Advantage of the present invention is: the structure of the present invention by U-shaped pipe realized the detection to inside battery air pressure, simple in structure, it is convenient to measure, and realize detecting the inside lithium ion cell gas pressure is real-time, effective, guidance plays an important role to eliminating the lithium ion battery potential safety hazard to the design of lithium ion battery body construction and safety valve.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the enlarged drawing of means of deflation among the present invention.
Embodiment
Such as Fig. 1, shown in 2, a kind of inside lithium ion cell gas pressure detection unit, include U-shaped pipe 3 and means of deflation 1 that inside is placed with liquid, described means of deflation 1 includes, lower battery clamping plate 5,6, mesuring battary 4 is placed between the two battery clamping plate, fixing by screw rod 7 between the two battery clamping plate, described mesuring battary 4 tops are fixed with venting cavity 8, venting cavity 8 passes described upper battery clamping plate 5 and is tightly connected with upper battery clamping plate 5, described venting cavity 8 bottoms are air inlet, the side is provided with the gas outlet, end sealing, the gas outlet is connected with described U-shaped pipe 3 right cavitys by tracheae 2, and venting cavity 8 interior gas outlet upsides are placed with piston 9, also is placed with in the venting cavity 8 and pricks vent needle 10, described bundle vent needle 10 most advanced and sophisticated contact measured batteries 4 tops, be used for pricking the hole at mesuring battary 4, bundle vent needle 10 other ends pass piston 9 and venting cavity 8 tops and are fixed on the handle 11, and described handle 11 supports and drives bundle vent needle 10 by bracing frame 12 and moves up and down.
A kind of inside lithium ion cell gas pressure detection method that adopts said apparatus to carry out comprises the steps:
(1) driving bundle vent needle 10 by handle 11 moves down, acupuncture treatment hole 10 is pricked at mesuring battary 4 aperture, gas in the mesuring battary 4 enters in the venting cavity 8 and enters tracheae 2 interior rows from the gas outlet to advance in the right cavity of U-shaped pipe 3, until the liquid level on U-shaped pipe 3 interior both sides is static, recording the liquid level difference is h, air pressure inside P2=P0+ ρ gh after mesuring battary 4 exhausts, inside battery gas volume variation delta V=1/2hS, wherein P0 is atmospheric pressure, ρ is U-shaped liquid in pipe density, and S is that U-shaped tube section is long-pending;
(2) taking-up of the mesuring battary after the exhaust is weighed, be designated as W1, mesuring battary 4 is put in the container that fills with organic solvent, and fully submergence, container is put into vacuum tank, constantly vacuumize, the gas volume of discharging in the filled with organic solvent mesuring battary, take out mesuring battary and the organic solvent on surface is removed clean and weighed be designated as W2, the gas volume that mesuring battary is discharged is V1=(W2-W1)/ρ 1, ρ 1 is organic solvent density;
(3) according to Boyle's law P1V1=P2(V1+ Δ V), calculate gas interior pressure P 1 to be measured.
Described inside lithium ion cell gas pressure detection unit is characterized in that: be respectively equipped with upper and lower sealing gasket 13 between the above and below of described mesuring battary 4 and the upper and lower battery clamping plate 5,6.
Described inside lithium ion cell gas pressure detection unit is characterized in that: described venting cavity 8 diameters are 10 to 30mm, and material is stainless steel; Described bundle vent needle 10 syringe needle diameters are 1 to 2mm, and material is stainless steel.
Described inside lithium ion cell gas pressure detection unit is characterized in that: the liquid in the described U-shaped pipe 3 is ethanol, ethyl acetate.
Claims (5)
1. inside lithium ion cell gas pressure detection unit, it is characterized in that: include U-shaped pipe and means of deflation that inside is placed with liquid, described means of deflation includes, lower battery clamping plate, mesuring battary is placed between the two battery clamping plate, fix by screw rod between the two battery clamping plate, described mesuring battary top is fixed with the venting cavity, the venting cavity passes described upper battery clamping plate and is tightly connected with upper battery clamping plate, described venting cavity bottom is air inlet, the side is provided with the gas outlet, end sealing, the gas outlet is connected with the right cavity of described U-shaped pipe by tracheae, the gas outlet upside is placed with piston in the venting cavity, also be placed with the bundle vent needle in the venting cavity, the most advanced and sophisticated contact measured battery of described bundle vent needle top, the bundle vent needle other end passes piston and venting cavity top and is fixed on the handle, and described handle is supported and is driven the bundle vent needle and moves up and down by bracing frame.
2. an inside lithium ion cell gas pressure detection method that adopts device claimed in claim 1 to carry out is characterized in that: comprise the steps:
(1) driving the bundle vent needle by handle moves down, the acupuncture treatment hole is pricked at mesuring battary aperture, gas in the mesuring battary enters in the venting cavity and from the gas outlet and enters in the right cavity of arranging U-shaped pipe in the tracheae, until the liquid level on both sides is static in the U-shaped pipe, recording the liquid level difference is h, air pressure inside P2=P0+ ρ gh after the mesuring battary exhaust, inside battery gas volume variation delta V=1/2hS, wherein P0 is atmospheric pressure, and ρ is U-shaped liquid in pipe density, and S is that U-shaped tube section is long-pending;
(2) taking-up of the mesuring battary after the exhaust is weighed, be designated as W1, mesuring battary is put in the container that fills with organic solvent, and fully submergence, container is put into vacuum tank, constantly vacuumize, the gas volume of discharging in the filled with organic solvent mesuring battary, take out mesuring battary and the organic solvent on surface is removed clean and weighed be designated as W2, the gas volume that mesuring battary is discharged is V1=(W2-W1)/ρ 1, ρ 1 is organic solvent density;
(3) according to Boyle's law P1V1=P2(V1+ Δ V), calculate gas interior pressure P 1 to be measured.
3. inside lithium ion cell gas pressure detection unit according to claim 1 is characterized in that: be respectively equipped with upper and lower sealing gasket between the above and below of described mesuring battary and the upper and lower battery clamping plate.
4. inside lithium ion cell gas pressure detection unit according to claim 1 is characterized in that: described venting cavity diameter is 10 to 30mm, and material is stainless steel; Described bundle vent needle syringe needle diameter is 1 to 2mm, and material is stainless steel.
5. inside lithium ion cell gas pressure detection unit according to claim 1 is characterized in that: the liquid in the described U-shaped pipe is ethanol, ethyl acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012103102652A CN102868003A (en) | 2012-08-28 | 2012-08-28 | Device and method for detecting internal gas pressure of lithium ion battery |
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| CN2012103102652A CN102868003A (en) | 2012-08-28 | 2012-08-28 | Device and method for detecting internal gas pressure of lithium ion battery |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445667A (en) * | 2015-11-23 | 2016-03-30 | 山东精工电子科技有限公司 | Soft packaged lithium ion battery formation gas production testing device |
| CN106525190A (en) * | 2016-12-30 | 2017-03-22 | 山东精工电子科技有限公司 | Device for detecting gas production rate of cylindrical lithium ion battery and application method thereof |
| CN106876817A (en) * | 2016-12-21 | 2017-06-20 | 杭州伯坦科技工程有限公司 | Detect the method and inside battery pressure detection piece of inside battery pressure |
| CN109186846A (en) * | 2018-09-20 | 2019-01-11 | 南开大学 | Multi-purpose battery produces gas in situ detection analytical equipment |
| CN110376531A (en) * | 2018-12-20 | 2019-10-25 | 盐城工学院 | A kind of lithium ion battery original position production gas detection device and method |
| CN110470424A (en) * | 2019-07-25 | 2019-11-19 | 清华大学 | The experimental method of in situ measurement inside battery pressure |
| CN110487348A (en) * | 2019-08-08 | 2019-11-22 | 浙江长虹飞狮电器工业有限公司 | The gas amount detecting device of alkaline battery |
| CN110836704A (en) * | 2019-11-12 | 2020-02-25 | 远东福斯特新能源有限公司 | Device for measuring internal gas production of lithium ion battery |
| CN112433166A (en) * | 2020-11-22 | 2021-03-02 | 同济大学 | Multi-dimensional detection method and structure for internal failure reaction of lithium ion power battery |
| CN112540109A (en) * | 2020-11-27 | 2021-03-23 | 江苏大学 | Method and device for synchronously calculating hydrogen evolution amount during electrochemical test |
| EP3780247A4 (en) * | 2018-12-03 | 2021-06-23 | Lg Chem, Ltd. | Internal pressure measuring jig for cylindrical battery cell |
| CN113295322A (en) * | 2021-07-06 | 2021-08-24 | 郑丹苗 | Internal pressure detection equipment for cylindrical lithium ion battery and using method thereof |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445667A (en) * | 2015-11-23 | 2016-03-30 | 山东精工电子科技有限公司 | Soft packaged lithium ion battery formation gas production testing device |
| CN106876817A (en) * | 2016-12-21 | 2017-06-20 | 杭州伯坦科技工程有限公司 | Detect the method and inside battery pressure detection piece of inside battery pressure |
| CN106876817B (en) * | 2016-12-21 | 2019-04-12 | 杭州伯坦科技工程有限公司 | Detect the method and inside battery pressure detection piece of inside battery pressure |
| CN106525190A (en) * | 2016-12-30 | 2017-03-22 | 山东精工电子科技有限公司 | Device for detecting gas production rate of cylindrical lithium ion battery and application method thereof |
| CN109186846B (en) * | 2018-09-20 | 2020-10-13 | 南开大学 | Multipurpose battery gas production in-situ detection and analysis device |
| CN109186846A (en) * | 2018-09-20 | 2019-01-11 | 南开大学 | Multi-purpose battery produces gas in situ detection analytical equipment |
| EP3780247A4 (en) * | 2018-12-03 | 2021-06-23 | Lg Chem, Ltd. | Internal pressure measuring jig for cylindrical battery cell |
| US11824171B2 (en) | 2018-12-03 | 2023-11-21 | Lg Energy Solution, Ltd. | Internal pressure measuring jig for cylindrical battery cell |
| CN110376531A (en) * | 2018-12-20 | 2019-10-25 | 盐城工学院 | A kind of lithium ion battery original position production gas detection device and method |
| CN110470424A (en) * | 2019-07-25 | 2019-11-19 | 清华大学 | The experimental method of in situ measurement inside battery pressure |
| CN110470424B (en) * | 2019-07-25 | 2020-07-14 | 清华大学 | Experiment method for in-situ measurement of internal pressure of battery |
| CN110487348B (en) * | 2019-08-08 | 2024-04-30 | 浙江长虹飞狮电器工业有限公司 | Gas amount detecting device for alkaline battery |
| CN110487348A (en) * | 2019-08-08 | 2019-11-22 | 浙江长虹飞狮电器工业有限公司 | The gas amount detecting device of alkaline battery |
| CN110836704A (en) * | 2019-11-12 | 2020-02-25 | 远东福斯特新能源有限公司 | Device for measuring internal gas production of lithium ion battery |
| CN112433166A (en) * | 2020-11-22 | 2021-03-02 | 同济大学 | Multi-dimensional detection method and structure for internal failure reaction of lithium ion power battery |
| CN112540109B (en) * | 2020-11-27 | 2023-07-18 | 江苏大学 | Method and device for synchronously calculating hydrogen evolution quantity during electrochemical test |
| CN112540109A (en) * | 2020-11-27 | 2021-03-23 | 江苏大学 | Method and device for synchronously calculating hydrogen evolution amount during electrochemical test |
| CN113295322A (en) * | 2021-07-06 | 2021-08-24 | 郑丹苗 | Internal pressure detection equipment for cylindrical lithium ion battery and using method thereof |
| CN113295322B (en) * | 2021-07-06 | 2023-01-03 | 河南锂动电源有限公司 | Internal pressure detection equipment for cylindrical lithium ion battery and using method thereof |
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Address after: 230011, No. 7 D Road, Yaohai Industrial Park, Hefei, Anhui, China Applicant after: Hefei Guoxuan High-Tech Power Energy Co.,Ltd. Address before: 230011, No. 7 D Road, Yaohai Industrial Park, Hefei, Anhui, China Applicant before: Gotion High-tech Co., Ltd. |
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Application publication date: 20130109 |