CN206282943U - Inside battery pressure detector arrangement - Google Patents
Inside battery pressure detector arrangement Download PDFInfo
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- CN206282943U CN206282943U CN201621411757.0U CN201621411757U CN206282943U CN 206282943 U CN206282943 U CN 206282943U CN 201621411757 U CN201621411757 U CN 201621411757U CN 206282943 U CN206282943 U CN 206282943U
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- Prior art keywords
- battery
- elastic
- inside battery
- cavity
- sealed body
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- 239000000463 material Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000005260 corrosion Methods 0.000 claims abstract description 4
- 230000007797 corrosion Effects 0.000 claims abstract description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 17
- 229920001971 elastomer Polymers 0.000 claims description 5
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical group CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 101100226116 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) esa-1 gene Proteins 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000004500 asepsis Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- 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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- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
The utility model is related to a kind of inside battery pressure detector arrangement, including the elastic sealed body being located in inside battery cavity, elastic sealed body includes elastic wall and the cavity surrounded by elastic wall sealing, the pressure values identical air in the pressure values and inside battery cavity for producing is inoculated with cavity, elastic sealed body is in regular geometric bodies such as spheroid or spheroids, the uniform wall thickness of elastic wall, the material of elastic wall be with can not by electrolytic corrosion, be not easily broken and material easily stretchable and the characteristics of shrink.Penetration-detection is carried out to battery using X-ray, the external diameter size of elastic sealed body is obtained, volume is then calculated, the internal pressure value of elastic sealed body, as battery compartment internal pressure value are obtained according to gas equation.The utility model makes simple, and environmental protection is with low cost, by the utility model, can conveniently realize the detection to inner pressure of battery, and detection is accurate, meets the demand of scale production in enormous quantities.
Description
Technical field
The utility model is related to electric automobile power battery to manufacture field, more particularly to a kind of inside battery pressure detector
Structure.
Background technology
Lithium ion battery has had the history of recent two decades from actual industrialization till now, used as a kind of new green
Color high-capacity environment-protecting motive-power battery, with energy density it is high, usage cycles are long, asepsis environment-protecting and it is convenient recycle etc. it is many excellent
Point.Lithium ion battery is optimal energy storage device at present, and its advantage is significantly larger than the batteries such as plumbic acid, ni-mh, and
Each field is widely used in, particularly in the recent period and in terms of following new-energy automobile, its demand and development are linearly gone up
The trend of liter.
Lithium ion battery can be divided into several species such as soft roll structure, square metal shell structure, cylindrical structure by surface structure
Type.Wherein, cylindrical cell has the automation equipment of high mature, technology production is ripe, security is good, mechanical strength is high etc.
Plurality of advantages, has been increasingly becoming the first-selection of new-energy automobile accumulation power supply.But due to cylindrical cell small volume in itself, should
Can be very huge with the number of batteries needed on new-energy automobile, this requires that used battery must have fabulous uniformity
And security performance, this is also major institutes of cylinder lithium ion battery manufacturing enterprise must problems faced.
Sealing state is always maintained at since sealing in cylinder lithium ion battery production process, will not be as Soft Roll, square
Metal housing battery is middle like that to have exhaust process.Because there is distinctive electrochemical reaction in preliminary filling formation process in battery,
The gases such as ethene, methane, ethane can be produced, the pressure inevitably resulted in cylinder annular seal space increases.Under normal circumstances, will not
Very big negative effect is caused to battery performance, is to allow this portion gas and pressure to exist.But if lithium ion battery exists
Occur the reasons such as technological design is unreasonable, production management and control is not in place in manufacturing process, will result in the gas in cylinder annular seal space
Body pressure is higher or battery of batch production between the uneven first-class phenomenon of pressure, eventually influence the safety of battery with it is consistent
Property, lead to not high-volume and use in groups.
The current detection to cylindrical cell internal pressure is also without effective method.Attemptable straightforward procedure
There are two：One is that inside battery pressure is estimated by testing single battery performance；Another method is
By a kind of high-precision seal-off pressure sensor, single battery is destroyed, estimated by the minor variations of pressure
Calculate.But both approaches drawback is too many, is first accurately and efficiently inner pressure of battery to be detected, next to that cannot apply
To in the production in enormous quantities of scale, therefore both approaches are not all employed in lithium electricity industry.
The content of the invention
The test and comparison that the utility model mainly solves inside battery pressure is difficult, otherwise original method of testing cannot essence
Really or detection inner pressure of battery is destructive detection, it is impossible to be applied to the technical problem in the production in enormous quantities of scale；There is provided
A kind of inside battery pressure detector arrangement, it can conveniently realize the detection to inner pressure of battery, and detection is accurate, meets scale
The demand of production in enormous quantities.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：The utility model bag
The elastic sealed body being located in inside battery cavity is included, elastic sealed body includes elastic wall and by elastic wall sealing encirclement
Cavity, is inoculated with the pressure values identical air in the pressure values and inside battery cavity for producing in cavity.In cell fabrication processes
In, in elastic sealed body to be put into inside battery cavity before cell sealing is sealed, treat lithium ion battery follow-up producing process
Complete, then carry out sealing sealing.Battery preliminary filling chemical conversion terminate after, due to during occur distinctive electrochemical reaction,
Inside battery can produce the gases such as ethene, methane, ethane, and the pressure inevitably resulted in inside battery cavity increases.Due to bullet
Property seal be sealing, internal gas content is certain, in the presence of external pressure, will necessarily deform upon contraction, volume
Diminish.At this moment, penetration-detection is carried out to battery using X-ray, the external diameter size of elastic sealed body can be detected, then can be with
The volume of elastic sealed body is calculated, according to gas equation PV=nRT, wherein, P is gas pressure intensity, and V is gas volume, and n is gas
The amount (i.e. molal quantity) of body material, R is gas constant, and T is gas temperature (temperature i.e. in inside battery cavity), calculates and obtains
The internal pressure value P of elastic sealed body.Because the characteristics of in elastic sealed body material and structure, its internal pressure is also equal to electricity
Pressure values in pressure in the internal cavities of pond, i.e. cylinder lithium ion battery cavity.Using the utility model, can be easily
The detection to inner pressure of battery is realized, detection is accurate, meets the demand of scale production in enormous quantities.
Preferably, described elastic sealed body is connected with described battery cap.Ensure elastic sealed body installation site
It is relatively fixed, is easy to detection.Elastic sealed body can be used separately as a part, i.e., be not connected with miscellaneous part, directly
Use.Connection can also be combined with miscellaneous part to use, battery cap is such as fixed on by welding or adhesion mode
Or on lithium ion battery miscellaneous part.
Preferably, the uniform wall thickness of the elastic wall of described elastic sealed body.Uniform force, improves accuracy of detection.
Preferably, described elastic sealed body is in spheroid or spheroid.Ensure elastic sealed body uniform force, also allow for
Calculate volume.The shape of certain elastic sealed body is all possible using the solid that relatively regular, volume is easily calculated.
Preferably, the external diameter of described elastic sealed body is 0.5~1mm, the wall thickness of elastic wall is 0.1~0.4mm.
Preferably, the material of described elastic wall be with can not by electrolytic corrosion, be not easily broken and easily stretchable
With material the characteristics of contraction.
Preferably, the material of described elastic wall is butylbenzene class rubber.Using conventional modified rubber, be butadiene-styrene rubber and
The composition of natural rubber, inside with the addition of the special nonmetalloid in part.The combination rubber has certain intensity and retractility,
Do not reacted with the solvent (such as dimethyl carbonate, micro hydrofluoric acid) in lithium ion battery simultaneously, while having taken into account airtight
Property, mechanical strength and the performance such as anti-aging.
Preferably, described battery is cylinder lithium ion battery, battery includes barrel-shaped box hat and in box hat
Core, battery cap is stamped in sealing at the opening of box hat, between battery cap and core formed inside battery cavity, it is described
In inside battery cavity, the positive pole ear being connected on battery cap bends and is connected with core elastic sealed body in Z-shaped.
The beneficial effects of the utility model are：By the utility model, can accurately and efficiently to any enclosed cell inside
Gas pressure intensity is detected, easy to detect, the demand of scale production in enormous quantities is met, so that finally can be to lithium ion battery
Chemical property, security performance and uniformity carry out effective assessment screening.The utility model makes simple, material green ring
Protect, overall with low cost, cost performance is very high, higher and higher in lithium battery chemical property, security performance and coherence request
There is prospect in lithium electricity market very much.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is a kind of the utility model installation structural representation in the battery.
1. elastic sealed body in figure, 2. elastic wall, 3. cavity, 4. box hat, 5. core, 6. battery cap, 7. inside battery
Cavity, 8. positive pole ear.
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：The inside battery pressure detector arrangement of the present embodiment, installed in cylinder inside lithium ion cell, such as
Shown in Fig. 2, cylinder lithium ion battery includes barrel-shaped box hat 4 and the core 5 in box hat 4, close at the opening of box hat 4
Capping has battery cap 6, and inside battery cavity 7 is formed between battery cap 6 and core 5, and one is equipped with inside battery cavity 7
Elastic sealed body 1, elastic sealed body 1 and the adhesion of battery cap 6, the positive pole ear 8 being connected on battery cap 6 bend in Z-shaped
And be connected with core 5.As shown in figure 1, elastic sealed body 1 is a spherosome, elastic sealed body includes elastic wall 2 and by elastic wall
The cavity 3 that 2 sealings are surrounded, is inoculated with a certain amount of air in cavity 3, air is produced in cavity pressure values and inside battery
Pressure values in cavity are identical.The uniform wall thickness of whole elastic wall 2, the material of elastic wall 2 uses butylbenzene class rubber, and it can not
By electrolytic corrosion, high mechanical strength is not easily broken, and extensibility is good, easily stretchable and contraction, nontoxic, cheap.The present embodiment
In, the external diameter of elastic sealed body 1 is 1mm, and the wall thickness of elastic wall 2 is 0.25mm.
When making battery, first core is placed into box hat, then high-temperature baking some hours are to remove internal moisture, so
After carry out fluid injection, then elastic sealed body is placed in inside battery cavity, positive pole ear is bent in Z-shaped, finally cover electricity
Pond block simultaneously carries out closed sealing using mechanical press seal, is made resultant battery.Cylinder lithium ion battery shelves work after it has been manufactured
Change a period of time, low current charge operation is proceeded by after liquid complete wetting core to be electrolysed.Battery preliminary filling chemical conversion terminate after,
The distinctive electrochemical reaction occurred due to during, inside battery can produce the gases such as ethene, methane, ethane, will necessarily lead
The pressure sent a telegraph in the internal cavities of pond increases.Because elastic sealed body is sealing, internal gas content is certain, in external pressure
In the presence of, contraction will necessarily be deformed upon, volume diminishes.At this moment, penetration-detection, Ke Yijian are carried out to battery using X-ray
The external diameter size of elastic sealed body is measured, the bead volume of elastic sealed body can be then calculated, according to gas equation PV=
NRT, wherein, P is gas pressure intensity in bead, and V is gas volume in bead, and n is the amount (i.e. molal quantity) of gaseous matter in bead,
R is gas constant, and T is gas temperature (temperature i.e. in inside battery cavity) in bead, calculates and obtains the interior of elastic sealed body
Portion pressure values P.Because the characteristics of in elastic sealed body material and structure, its internal pressure is also equal in inside battery cavity
Pressure values in pressure, i.e. cylinder lithium ion battery cavity.
By the utility model, accurately and efficiently any enclosed cell internal gas pressure can be detected, detection side
Just, the demand of scale production in enormous quantities is met, so that finally can be to the chemical property of lithium ion battery, security performance and one
Cause property carries out effective assessment screening.The utility model makes simple, material environmental protection, and overall with low cost, cost performance is very
Height, has prospect very much in lithium battery chemical property, security performance and the higher and higher lithium electricity market of coherence request.
Claims (8)
1. a kind of inside battery pressure detector arrangement, it is characterised in that including the elastic sealed body being located in inside battery cavity
(1) cavity (3) that, elastic sealed body (1) is surrounded including elastic wall (2) and by elastic wall (2) sealing, fills in cavity (3)
There is the pressure values identical air in the pressure values and inside battery cavity of generation.
2. inside battery pressure detector arrangement according to claim 1, it is characterised in that described elastic sealed body (1)
It is connected with the battery cap (6) of described battery.
3. inside battery pressure detector arrangement according to claim 1, it is characterised in that described elastic sealed body (1)
Elastic wall (2) uniform wall thickness.
4. the inside battery pressure detector arrangement according to claim 1 or 2 or 3, it is characterised in that described is elastic close
Envelope body (1) is in spheroid or spheroid.
5. the inside battery pressure detector arrangement according to claim 1 or 2 or 3, it is characterised in that described is elastic close
The external diameter of envelope body (1) is 0.5~1mm, and the wall thickness of elastic wall (2) is 0.1~0.4mm.
6. the inside battery pressure detector arrangement according to claim 1 or 2 or 3, it is characterised in that described elastic wall
(2) material be with can not by electrolytic corrosion, be not easily broken and it is easily stretchable and shrink the characteristics of material.
7. inside battery pressure detector arrangement according to claim 6, it is characterised in that the material of described elastic wall (2)
Matter is butylbenzene class rubber.
8. the inside battery pressure detector arrangement according to claim 1 or 2 or 3, it is characterised in that described battery is
Cylinder lithium ion battery, battery includes barrel-shaped box hat (4) and the core (5) in box hat (4), the opening of box hat (4)
Battery cap (6) is stamped in place's sealing, and inside battery cavity (7), described elasticity are formed between battery cap (6) and core (5)
Seal (1) in inside battery cavity (7), be connected in positive pole ear (8) on battery cap (6) in Z-shaped bending and and
Core (5) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621411757.0U CN206282943U (en) | 2016-12-21 | 2016-12-21 | Inside battery pressure detector arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621411757.0U CN206282943U (en) | 2016-12-21 | 2016-12-21 | Inside battery pressure detector arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206282943U true CN206282943U (en) | 2017-06-27 |
Family
ID=59073848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621411757.0U Active CN206282943U (en) | 2016-12-21 | 2016-12-21 | Inside battery pressure detector arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206282943U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707419B (en) * | 2020-07-01 | 2022-05-03 | 郑州佛光发电设备有限公司 | Detection method for simulating sealing performance of fuel cell at target temperature |
-
2016
- 2016-12-21 CN CN201621411757.0U patent/CN206282943U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707419B (en) * | 2020-07-01 | 2022-05-03 | 郑州佛光发电设备有限公司 | Detection method for simulating sealing performance of fuel cell at target temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210111 Address after: 310000 room 207, 2 / F, building 11, No.1 Jiaogong Road, Xihu District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Botan New Energy Technology Co.,Ltd. Address before: 310012 room 3116, building 3, No.9 xidoumen Road, Xihu District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou First Technology ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231106 Address after: Zhangpanqiao Village (Litoujin), Shushan Street, Xiaoshan, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Zhengqiang Transmission Co.,Ltd. Address before: 310000 room 207, 2 / F, building 11, No.1 Jiaogong Road, Xihu District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Botan New Energy Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |