CN207352070U - A kind of lithium battery diaphragm ionic conductivity apparatus - Google Patents
A kind of lithium battery diaphragm ionic conductivity apparatus Download PDFInfo
- Publication number
- CN207352070U CN207352070U CN201721169843.XU CN201721169843U CN207352070U CN 207352070 U CN207352070 U CN 207352070U CN 201721169843 U CN201721169843 U CN 201721169843U CN 207352070 U CN207352070 U CN 207352070U
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- footstock
- binding post
- ionic conductivity
- base
- top electrode
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Abstract
The utility model discloses a kind of lithium battery diaphragm ionic conductivity apparatus, including footstock, base, top electrode, upper binding post, bottom electrode, lower binding post, adjusting nut, spring and pressure sensor, the top electrode is movably arranged in footstock bottom recesses by upper binding post, the bottom electrode is fixed in base top surface groove, and with top electrode face, the adjusting nut is screwed onto on footstock, the spring one end is contradicted in top electrode top surface, the other end is contradicted and fixed in adjusting nut bottom surface, the footstock and base by positioning stud and gasket.The measuring device of the utility model, it can accurately test out and be changed by hot pressing condition lower diaphragm plate diversion sub-feature, pass through the parameter testings such as different temperatures, the ionic conductivity of different pressures condition lower diaphragm plate, guidance is provided to actual production, guarantee is provided for the safe handling of product, whole device is simple in structure, simple to operate, it is of low cost, it is highly practical.
Description
Technical field
It the utility model is related to lithium battery technical field of measurement and test, and in particular to a kind of lithium battery diaphragm ionic conductivity measurement
Device.
Background technology
Lithium ion battery is by positive plate, negative plate, the membrane and electrolyte being arranged at intervals between positive plate and negative plate
Deng composition.Wherein, for membrane as the significant components in lithium ion battery, its main function is to separate positive plate and negative plate
Come, prevent two electrodes contact and caused by short circuit, in addition membrane also have the function of to make electrolyte ion by.The performance of membrane
Determine interfacial structure and internal resistance of battery etc., directly affect capacity, cycle performance and security performance of battery etc..Performance is excellent
Different membrane has the function that the comprehensive performance for improving lithium battery important.
Polymer Li-ion battery often requires to use hot pressing and specific in the production process to obtain good interface
Hot-pressing fixture etc..Substantial amounts of research shows, under the multiple action of high temperature, high pressure and electrolyte, polypropylene and polyethylene
Microcellular structure can change, and influence the diversion sub-feature of membrane, may influence battery multiplying power and circulation under serious situation
Deng electrochemical properties.At present, lithium ion battery separator product supplier is also provided solely for conventional porosity, heat shrinkability characteristic, portion
Point manufacturer also lacks the testing standard of ionic conductivity, and then influences lithium ion battery separator safe handling scope really
It is fixed.
Utility model content
The purpose of this utility model be in view of the above-mentioned problems, provide a kind of lithium battery diaphragm ionic conductivity apparatus,
It can accurately be tested out is changed by hot pressing condition lower diaphragm plate diversion sub-feature, passes through different temperatures, different pressures condition
The parameter testings such as the ionic conductivity of lower diaphragm plate, provide guidance to actual production, guarantee are provided for the safe handling of product.
In order to achieve the above object, the technical scheme adopted by the utility model is that：
A kind of lithium battery diaphragm ionic conductivity apparatus, including footstock, base, top electrode, upper binding post, lower electricity
Pole, lower binding post, adjusting nut, spring and pressure sensor, the top electrode is movably arranged in footstock bottom recesses, described
Bottom electrode is fixed in base top surface groove, and is connected with top electrode face, described upper binding post one end with top electrode, the other end
Connected through footstock with electrochemical workstation, described lower binding post one end is connected with bottom electrode, and the other end passes through base and electrification
Work station connection is learned, the adjusting nut is screwed onto at the top of footstock, and the spring is set on binding post, and its one end contradicts
Top electrode top surface, the other end contradict described between adjusting nut and spring in adjusting nut bottom surface, the pressure sensor
Multiple positioning studs are arranged with footstock, the base is equipped with multiple positioning screw holes for being connected with positioning stud, institute
State footstock and seat is additionally provided with gasket.
Preferably, it is the interface of improvement upper/lower electrode and membrane contacts, improves the uniformity of test, the top electrode
Lower surface and the upper surface of bottom electrode are surface polishing, and roughness Ra is not higher than 0.2 μm.
Preferably, to be precisely controlled the temperature of upper/lower electrode, test sample temperature is precisely controlled with realizing, improves and surveys
Accuracy is tried, the top electrode and bottom electrode are all connected with heating unit, and are not less than the metal material of 12W/ (mK) by thermal conductivity
Material is made.
Preferably, between increase electrode and test sample interface flatness, and to the pressure environment of sample test into
Row preferably simulation, to improve test accuracy, the adjusting nut and spring controlled pressure limit are 0-5Mpa.
Preferably, the insulating rubber material that the gasket is corroded by electrolyte resistance and has telescopic resilience is made, can be with
When footstock and base mutually extrude, there is certain cushioning effect, avoid the damage to sample, and reduce external environment condition to surveying
The influence of test result, further improves the accuracy of test.
Preferably, the upper binding post is hollow cylindrical structure, and the lower binding post is solid flat shape structure, can be so as to
Two binding posts can be directly contacted in electrochemical workstation, reduce the contact resistance of test loop, improve the accuracy of test.
Preferably, polytetrafluoroethylene (PTFE), polyphenylene sulfide, the polyvinylidene fluoride that the footstock and base corrode by electrolyte resistance
Alkene, polypropylene, polyethylene or makrolon material are made.
The measuring device of the utility model, can accurately test out and be become by hot pressing condition lower diaphragm plate diversion sub-feature
Change, by parameter testings such as different temperatures, the ionic conductivities of different pressures condition lower diaphragm plate, guidance provided to actual production,
Guarantee is provided for the safe handling of product, whole device is simple in structure, simple to operate, of low cost, highly practical.
Brief description of the drawings
Fig. 1 is the structure diagram of the measuring device of the utility model；
Description of reference numerals：1- footstocks；2- bases；3- top electrodes；The upper binding posts of 4-；5- bottom electrodes；Binding post under 6-；7-
Adjusting nut；8- springs；9- pressure sensors；10- positioning studs；11- positioning screw holes；12- gaskets.
Embodiment
The content of the utility model is described in further details with reference to the accompanying drawings and detailed description.
Embodiment：
It refer to shown in Fig. 1, a kind of lithium battery diaphragm ionic conductivity apparatus, including footstock 1, base 2, top electrode
3rd, upper binding post 4, bottom electrode 5, lower binding post 6, adjusting nut 7, spring 8 and pressure sensor 9, positioning stud 10, positioning spiral shell
Hole 11 and gasket 12.
Wherein, it is footstock 1 and base 2 corrode by electrolyte resistance polytetrafluoroethylene (PTFE), polyphenylene sulfide, Kynoar, poly-
Propylene, polyethylene or makrolon material are made, and the middle part of footstock 1 is equipped with through hole, and top is equipped with threaded hole, and bottom surface is equipped with groove,
Four corners are arranged with positioning stud 10, and 2 top surface of base also is provided with groove, and four corners are correspondingly arranged matches somebody with somebody with positioning stud 10
The positioning screw hole 11 of conjunction, is equipped between the mating surface of footstock 1 and base 2 and is corroded by electrolyte resistance and have the exhausted of telescopic resilience
Gasket 12 made of edge elastomeric material, when footstock 1 and base 2 are closed by positioning stud 10 and positioning screw hole 11, two
Groove and gasket 12 form the enclosure space of storage electrolyte.
Top electrode 3 is movably arranged in 1 bottom recesses of footstock, and in free state, 3 lower surface of top electrode will be less than footstock
1 lower surface, bottom electrode 3 are fixed in 2 top surface groove of base, and with 3 face of top electrode, the lower surface of top electrode 3 and bottom electrode 5
Upper surface be surface polishing, and roughness Ra is not higher than 0.2 μm, and top electrode 3 and bottom electrode 5 are not less than by thermal conductivity
The metal material of 12W/ (mK) is made, and connects heating unit respectively.
Upper binding post 4 is hollow cylindrical structure, and one end is connected with 3 upper surface of top electrode, and the other end is from the through hole of footstock 1
It is pierced by and is connected with electrochemical workstation, adjusting nut 7 is screwed onto in the threaded hole at the top of footstock 1, and spring 8 is sleeved on binding post 4
On, its one end is contradicted in 3 top surface of top electrode, and the other end is contradicted in 7 bottom surface of adjusting nut, changes spring 8 by adjusting nut 7
Reduction length, and then the thrust of upper/lower electrode is adjusted, pressure sensor 9 then, is used between adjusting nut 7 and spring 8
Measure the thrust of upper/lower electrode, the preferred 0-5Mpa of pressure regulation spectrum of adjusting nut 7 and spring 8.Lower binding post 6 is solid
Flat structure, one end and bottom electrode 5 connect, and the other end is pierced by 2 side wall of base and is connected with electrochemical workstation.
During work, membrane to be measured is first punched into fritter, is placed in fully soaking in electrolyte, is covered on bottom electrode 5
Surface；Footstock 1 is pressed on base 2 by positioning stud 10 and positioning screw hole 11, sealing fastening；Top electrode 3 is set with
The temperature of electrode 5, and pressure of the top electrode 3 to bottom electrode 5 is set by adjusting nut 7 and pressure sensor 9；By electrochemistry
Work station positive and negative polarity wire is connected to binding post 4 and lower binding post 6 respectively, measures.
Above-listed detailed description is illustrating for the utility model possible embodiments, which simultaneously is not used to limit
The scope of protection of the utility model, all equivalence enforcements or change without departing from carried out by the utility model, are intended to be limited solely by this case
In protection domain.
Claims (7)
1. a kind of lithium battery diaphragm ionic conductivity apparatus, it is characterised in that including footstock (1), base (2), top electrode
(3), upper binding post (4), bottom electrode (5), lower binding post (6), adjusting nut (7), spring (8) and pressure sensor (9), it is described
Top electrode (3) is movably arranged in footstock (1) bottom recesses, and the bottom electrode (3) is fixed in base (2) top surface groove, and
With top electrode (3) face, described upper binding post (4) one end and top electrode (3) connection, the other end pass through footstock (1) and electrochemistry
Work station connects, and described lower binding post (6) one end and bottom electrode (5) connection, the other end pass through base (2) and electrochemical workstation
Connection, the adjusting nut (7) are screwed onto at the top of footstock (1), and the spring (8) is set on binding post (4), and its one end is supported
Touch in top electrode (3) top surface, the other end is contradicted is located at adjusting nut in adjusting nut (7) bottom surface, the pressure sensor (9)
(7) between spring (8), multiple positioning studs (10) are arranged with the footstock (1), the base (2) is equipped with multiple
For the positioning screw hole (11) connected with positioning stud (10), the footstock (1) and base (2) mating surface are additionally provided with gasket
(12)。
2. lithium battery diaphragm ionic conductivity apparatus according to claim 1, it is characterised in that the top electrode
(3) lower surface and the upper surface of bottom electrode (5) is surface polishing, and roughness Ra is not higher than 0.2 μm.
3. lithium battery diaphragm ionic conductivity apparatus according to claim 1, it is characterised in that the top electrode
(3) and bottom electrode (5) is all connected with heating unit, and is made of metal material of the thermal conductivity not less than 12W/ (mK).
4. lithium battery diaphragm ionic conductivity apparatus according to claim 1, it is characterised in that the adjusting nut
(7) and spring (8) adjust pressure limit be 0-5Mpa.
5. lithium battery diaphragm ionic conductivity apparatus according to claim 1, it is characterised in that the gasket
(13) insulating rubber material for being corroded by electrolyte resistance and having telescopic resilience is made.
6. lithium battery diaphragm ionic conductivity apparatus according to claim 1, it is characterised in that the upper wiring
Column (4) is hollow cylindrical structure, and the lower binding post (6) is solid flat shape structure.
7. lithium battery diaphragm ionic conductivity apparatus according to claim 1, it is characterised in that the footstock (1)
It is made with base (2) by polytetrafluoroethylene (PTFE), polyphenylene sulfide, Kynoar, polypropylene, polyethylene or makrolon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721169843.XU CN207352070U (en) | 2017-09-12 | 2017-09-12 | A kind of lithium battery diaphragm ionic conductivity apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721169843.XU CN207352070U (en) | 2017-09-12 | 2017-09-12 | A kind of lithium battery diaphragm ionic conductivity apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207352070U true CN207352070U (en) | 2018-05-11 |
Family
ID=62410936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721169843.XU Expired - Fee Related CN207352070U (en) | 2017-09-12 | 2017-09-12 | A kind of lithium battery diaphragm ionic conductivity apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207352070U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856195A (en) * | 2019-01-02 | 2019-06-07 | 北京科技大学 | A kind of high throughput liquid electric conductivity measuring device |
| CN112051308A (en) * | 2020-08-28 | 2020-12-08 | 哈尔滨师范大学 | Ion conductivity measurement clamp and measurement method for solid/liquid electrolyte |
| CN112557924A (en) * | 2020-12-17 | 2021-03-26 | 中国电子科技集团公司第十八研究所 | Lithium battery material electrical property testing device and testing method based on temperature and pressure control |
| CN113267680A (en) * | 2021-07-15 | 2021-08-17 | 国家电投集团氢能科技发展有限公司 | Proton exchange membrane conductivity test chamber and test method |
| CN113687144A (en) * | 2021-07-30 | 2021-11-23 | 蜂巢能源科技有限公司 | Testing device and testing method for diaphragm ionic conductivity |
| CN113791170A (en) * | 2021-09-07 | 2021-12-14 | 国网北京市电力公司 | Cable buffer layer ablation transfer characteristic simulation device and method |
| CN117031124A (en) * | 2023-08-17 | 2023-11-10 | 江苏风驰碳基新材料研究院有限公司 | Positive electrode ion conductivity testing device of sodium ion battery |
-
2017
- 2017-09-12 CN CN201721169843.XU patent/CN207352070U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856195A (en) * | 2019-01-02 | 2019-06-07 | 北京科技大学 | A kind of high throughput liquid electric conductivity measuring device |
| CN112051308A (en) * | 2020-08-28 | 2020-12-08 | 哈尔滨师范大学 | Ion conductivity measurement clamp and measurement method for solid/liquid electrolyte |
| CN112051308B (en) * | 2020-08-28 | 2023-09-15 | 哈尔滨师范大学 | Ion conductivity measuring clamp and measuring method for solid/liquid electrolyte |
| CN112557924A (en) * | 2020-12-17 | 2021-03-26 | 中国电子科技集团公司第十八研究所 | Lithium battery material electrical property testing device and testing method based on temperature and pressure control |
| CN113267680A (en) * | 2021-07-15 | 2021-08-17 | 国家电投集团氢能科技发展有限公司 | Proton exchange membrane conductivity test chamber and test method |
| CN113267680B (en) * | 2021-07-15 | 2022-01-07 | 国家电投集团氢能科技发展有限公司 | Proton exchange membrane conductivity test chamber and test method |
| CN113687144A (en) * | 2021-07-30 | 2021-11-23 | 蜂巢能源科技有限公司 | Testing device and testing method for diaphragm ionic conductivity |
| CN113791170A (en) * | 2021-09-07 | 2021-12-14 | 国网北京市电力公司 | Cable buffer layer ablation transfer characteristic simulation device and method |
| CN113791170B (en) * | 2021-09-07 | 2023-11-03 | 国网北京市电力公司 | Device and method for simulating ablation transfer characteristics of cable buffer layer |
| CN117031124A (en) * | 2023-08-17 | 2023-11-10 | 江苏风驰碳基新材料研究院有限公司 | Positive electrode ion conductivity testing device of sodium ion battery |
| CN117031124B (en) * | 2023-08-17 | 2024-04-12 | 江苏风驰碳基新材料研究院有限公司 | Positive electrode ion conductivity testing device of sodium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 |