CN208999488U - A kind of test device of lithium battery diaphragm conductivity - Google Patents
A kind of test device of lithium battery diaphragm conductivity Download PDFInfo
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- CN208999488U CN208999488U CN201821552147.1U CN201821552147U CN208999488U CN 208999488 U CN208999488 U CN 208999488U CN 201821552147 U CN201821552147 U CN 201821552147U CN 208999488 U CN208999488 U CN 208999488U
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- left electrode
- conductance
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Abstract
The utility model discloses a kind of test devices of lithium battery diaphragm conductivity, include conductance cell shell, the left electrode telescopic device for being fixedly installed on conductance cell enclosure interior and right electrode rotary device, the left electrode that is fixedly connected with left electrode stretching device, the right electrode being fixedly connected with right electrode rotary device, the membrane unwinding device and external conductivity meter for being fixed on conductance cell enclosure interior；Left electrode, right electrode are connect with external conductivity meter, and electrode telescopic device and right electrode rotary device are connect with controller.The utility model adjusts the distance between left electrode, right electrode by left electrode telescopic device, realize the test of lithium battery diaphragm conductivity, in test process, it only needs to realize that membrane winding increases the diaphragm number of plies between left electrode and right electrode by right electrode rotary device, simplify operating procedure, saves time and testing efficiency.
Description
Technical field
The utility model relates to lithium battery the field of test technology, the test of specifically a kind of lithium battery diaphragm conductivity is filled
It sets.
Background technique
Lithium ion battery is mainly made of anode, negative electrode membrane and electrolyte.The main function of diaphragm is to make positive and negative anodes point
It opens, prevents positive and negative anodes from contacting and causing short circuit, furthermore there is the microcellular structure for allowing ion by preventing electronic conduction, diaphragm
Microcellular structure restricts the conduction velocity of lithium ion, and then directly affects the performance of lithium ion battery, so, the ion-conductance of diaphragm
Conductance becomes one of the important indicator for measuring membrane properties.
The detection means of detection lithium battery diaphragm conductivity has the method using production button cell at present, due to spring pad
The difference of piece causes the pressure gap on diaphragm, while button cell production trouble；(generally also by the different numbers of plies of test
4 layers) diaphragm impedance, fitting a straight line Y=AX+B, the Linear Quasi of discrete point is right to be greater than 99.9%, be considered as effectively, can by slope A
Ionic conductivity S directly is calculated, testing time is more, and operating process is complicated, and test takes a long time, and testing efficiency is low.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of test device of lithium battery diaphragm conductivity, measurement essences
Degree is high, simplifies operating procedure, improves working efficiency.
The technical solution of the utility model are as follows:
A kind of test device of lithium battery diaphragm conductivity, includes conductance cell shell, is fixedly installed on conductance cell shell
The left electrode telescopic device and right electrode rotary device of inside, the left electrode being fixedly connected with left electrode stretching device and right electricity
Right electrode that pole rotating device is fixedly connected, the membrane unwinding device for being fixed on conductance cell enclosure interior and external conductance
Rate instrument；The left electrode telescopic device includes to be fixed on the horizontal guide rail of conductance cell enclosure interior and horizontally disposed
Telescopic rod, the left electrode are slideably positioned on horizontal guide rail, and one end of telescopic rod is fixed on the inner wall of conductance cell shell,
The other end of telescopic rod is fixedly connected with left electrode；The right electrode rotary device includes to be fixed on conductance cell inner walls
On rotary electric machine, with rotary electric machine output axis connection and horizontally disposed bull stick, the bull stick be mutually perpendicular to telescopic rod,
The right electrode is fixedly connected on bull stick, and right electrode and left electrode are the structure being oppositely arranged, the left electrode, the right side
Electrode passes through the terminals on conductance cell shell respectively and connect with external conductivity meter, the driving mechanism of the telescopic rod,
Rotary electric machine is connect with the controller outside conductance cell shell.
Pressure sensor connected to the controller is provided on the left electrode.
The right electrode include the rotor plate being fixedly connected with bull stick, two be individually fixed in rotor plate both ends of the surface
Right electrode slice, be provided with binding post on two right electrode slices, the right electrode slice of one of them opposite with left electrode
On binding post connect by the terminals on conductance cell shell with external conductivity meter.
The membrane unwinding device is horizontally disposed hanger bar, and the hanger bar is located at the right side of right electrode
Side.
Opening is provided on the conductance cell shell, the opening is hinged with capping.
The advantages of the utility model:
(1), the utility model adjusts the distance between left electrode, right electrode by left electrode telescopic device, realizes lithium electricity
The test of pond diaphragm conductivity, and in ionic conductivity test process, remain that constant test is pressed by pressure sensor
Power improves test accuracy, improves testing efficiency；
(2), the utility model is provided with right electrode rotary device, in test process, it is only necessary to pass through right electrode rotary device
Realize that membrane winding is to increase the diaphragm number of plies between left electrode and right electrode, simplify operating procedure, save the time and
Testing efficiency；
(3), the right electrode of the utility model uses double-sided electrode, can effectively improve testing efficiency, and and conductivity
Instrument connection is only a right electrode slice, efficiently avoids influencing ionic conductivity test due to another right electrode slice
Error.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
See Fig. 1, a kind of test device of lithium battery diaphragm conductivity includes conductance cell shell 1, is fixedly installed on conductance
Left electrode telescopic device and right electrode rotary device inside pond shell 1, the left electrode being fixedly connected with left electrode stretching device
2, the right electrode that is fixedly connected with right electrode rotary device, the membrane unwinding device 4 being fixed on inside conductance cell shell 1 and
External conductivity meter；Left electrode telescopic device includes that the horizontal guide rail 5 for being fixed on conductance cell enclosure interior and level are set
The telescopic rod 6 set, left electrode 2 are slideably positioned on horizontal guide rail 5, and the inner wall of conductance cell shell 1 is fixed in one end of telescopic rod 6
On, the other end of telescopic rod 6 is fixedly connected with left electrode 2；Right electrode rotary device includes to be fixed on 1 inner wall of conductance cell shell
On rotary electric machine 7, export axis connection and horizontally disposed bull stick 8, bull stick 8 with rotary electric machine 7 and be mutually perpendicular to telescopic rod 6,
Right electrode includes 31, the two right electrode slices being individually fixed in 31 both ends of the surface of rotor plate of rotor plate being fixedly connected with bull stick
32, binding post is provided on two right electrode slices 32, wherein a right electrode slice 32 and left electrode 2 are the structure being oppositely arranged,
Binding post on left electrode 2, the binding post on one of them right electrode slice 32 opposite with left electrode 2 pass through conductance cell shell
Terminals on 1 are connect with external conductivity meter, and the driving mechanism of telescopic rod 6, rotary electric machine 7 are and outside conductance cell shell 1
Controller connection.
Wherein, pressure sensor connected to the controller is provided on left electrode 2；Membrane unwinding device 4 is horizontally disposed
Hanger bar, and hanger bar is located at the right side side of right electrode；Opening is provided on conductance cell shell 1, opening is hinged with capping.
When work, first diaphragm is sufficiently soaked in the electrolytic solution, the capping of conductance cell shell 1 is opened, diaphragm passes through rolling
Cylinder winds and is placed on membrane unwinding device 4, and diaphragm is covered to the tow sides of right electrode；Then controller driving is stretched
Contracting bar 6 extends, and left electrode 2 is moved to right along horizontal guide rail 5 up to contacting with an opposite right electrode slice 32, solid by pressure sensor
The pressure size of fixed left electrode 2 and right electrode, the ion conductivity value of external conductivity meter test single-layer septum, test terminate
Afterwards, controller driving telescopic rod 6 resets, and left electrode 2 is moved to the left playback, and then controller control rotary electric machine 7 rotates, thus
Drive right electrode rotary to winding diaphragm, until towards two layers of diaphragm is covered on a right electrode slice 32 of left electrode 2, repetition
Preceding operation (left electrode 2 moves to right until contact with an opposite right electrode slice 32 and determining pressure), progress it is biseptate from
Electron conductivity measurement.It repeats the above steps, successively tests the ionic conductivity of laminated diaphragm, fitting a straight line Y=AX+B, discrete point
Linear Quasi it is right be greater than 99.9%, be considered as effectively, ionic conductivity S can directly be calculated by slope A.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of test device of lithium battery diaphragm conductivity, it is characterised in that: include conductance cell shell, be fixedly installed on electricity
Lead the left electrode telescopic device and right electrode rotary device, the left electricity that is fixedly connected with left electrode stretching device of pond enclosure interior
Pole, the right electrode being fixedly connected with right electrode rotary device, the membrane unwinding device for being fixed on conductance cell enclosure interior and outer
The conductivity meter set；The left electrode telescopic device includes the horizontal guide rail for being fixed on conductance cell enclosure interior, Yi Jishui
The telescopic rod of flat setting, the left electrode are slideably positioned on horizontal guide rail, and conductance cell shell is fixed in one end of telescopic rod
Inner wall on, the other end of telescopic rod is fixedly connected with left electrode；The right electrode rotary device includes to be fixed on conductance
Rotary electric machine in the inner walls of pond, with rotary electric machine output axis connection and horizontally disposed bull stick, the bull stick and flexible
Bar is mutually perpendicular to, and the right electrode is fixedly connected on bull stick, and right electrode and left electrode are the structure being oppositely arranged, described
Left electrode, right electrode pass through the terminals on conductance cell shell respectively and connect with external conductivity meter, the telescopic rod
Driving mechanism, rotary electric machine connect with the controller outside conductance cell shell.
2. a kind of test device of lithium battery diaphragm conductivity according to claim 1, it is characterised in that: the left electricity
Pressure sensor connected to the controller is provided on extremely.
3. a kind of test device of lithium battery diaphragm conductivity according to claim 1, it is characterised in that: the right electricity
Pole includes the rotor plate being fixedly connected with bull stick, two right electrode slices being individually fixed in rotor plate both ends of the surface, described
It is provided with binding post on two right electrode slices, the binding post on the right electrode slice of one of them opposite with left electrode passes through conductance
Terminals on the shell of pond are connect with external conductivity meter.
4. a kind of test device of lithium battery diaphragm conductivity according to claim 1, it is characterised in that: the diaphragm
Unwinding device is horizontally disposed hanger bar, and the hanger bar is located at the right side side of right electrode.
5. a kind of test device of lithium battery diaphragm conductivity according to claim 1, it is characterised in that: the conductance
Opening is provided on the shell of pond, the opening is hinged with capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821552147.1U CN208999488U (en) | 2018-09-21 | 2018-09-21 | A kind of test device of lithium battery diaphragm conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821552147.1U CN208999488U (en) | 2018-09-21 | 2018-09-21 | A kind of test device of lithium battery diaphragm conductivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208999488U true CN208999488U (en) | 2019-06-18 |
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ID=66800900
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821552147.1U Active CN208999488U (en) | 2018-09-21 | 2018-09-21 | A kind of test device of lithium battery diaphragm conductivity |
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| CN (1) | CN208999488U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267682A (en) * | 2021-07-20 | 2021-08-17 | 江西睿达新能源科技有限公司南昌分公司 | Conductivity testing device for lithium battery diaphragm |
| CN117110712A (en) * | 2023-08-08 | 2023-11-24 | 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 |
-
2018
- 2018-09-21 CN CN201821552147.1U patent/CN208999488U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267682A (en) * | 2021-07-20 | 2021-08-17 | 江西睿达新能源科技有限公司南昌分公司 | Conductivity testing device for lithium battery diaphragm |
| CN113267682B (en) * | 2021-07-20 | 2021-11-23 | 江西睿达新能源科技有限公司 | Conductivity testing device for lithium battery diaphragm |
| CN117110712A (en) * | 2023-08-08 | 2023-11-24 | 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 |
| CN117110712B (en) * | 2023-08-08 | 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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