CN203688666U - Lithium battery diaphragm area resistance testing device - Google Patents
Lithium battery diaphragm area resistance testing device Download PDFInfo
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- CN203688666U CN203688666U CN201320775705.1U CN201320775705U CN203688666U CN 203688666 U CN203688666 U CN 203688666U CN 201320775705 U CN201320775705 U CN 201320775705U CN 203688666 U CN203688666 U CN 203688666U
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Abstract
The utility model discloses a lithium battery diaphragm area resistance testing device capable of overcoming the large error of the prior art. The lithium battery diaphragm area resistance testing device comprises a pedestal, a transmission assembly, a connecting plate, an upper electrode assembly, and a lower electrode assembly. The upper electrode assembly is fixedly connected with the connecting plate, and the lower electrode assembly is fixedly disposed on the pedestal. The transmission assembly is fixedly disposed on the pedestal, and is used to drive the upper electrode assembly to move upwards and downwards by the connecting plate. The upper electrode assembly comprises an upper plate electrode, and the lower electrode assembly comprises a lower insulation clamping sleeve and a lower plate electrode. The lower insulation clamping sleeve is provided with a lower installation groove, in which is disposed the lower plate electrode opposite to the upper plate electrode. A liquid guiding groove can be formed between the side wall of the lower plate electrode and the inner wall of the lower insulation clamping sleeve. The thickness of the lower plate electrode is equal to or greater than the thickness of the lower installation groove. The upper plate electrode and the lower plate electrode are electrically connected with the electrochemical working station. The error of the diaphragm area resistance test is small by using the lithium battery diaphragm area resistance testing device.
Description
Technical field
The utility model relates to lithium rechargeable battery technical field of measurement and test, is specifically related to a kind of lithium battery diaphragm surface resistance testing apparatus.
Background technology
Lithium rechargeable battery is mainly made up of positive pole, negative pole, barrier film, electrolytic solution conventionally.The principal ingredient of barrier film is polyolefin, can form microcellular structure, is positioned between both positive and negative polarity, stops directly contact and cause short circuit of positive/negative plate, and electrolytic solution in its microcellular structure is as carrier, and ion can freely pass through, and electronics can not pass through barrier film.The pore texture of barrier film is restricting ionic conductance, and then directly affects the overall performance of lithium rechargeable battery.
The pore texture of barrier film is by signs such as porosity, pore diameter distribution, buckling factors, ion is by a large amount of tortuous micropores that connect, between both positive and negative polarity, move, form the conductive path of ion, electronics is by the transmission at both positive and negative polarity active material, conductive agent, collector etc. simultaneously, the conductive path that forms electronics, by ion and electronics, the migration between both positive and negative polarity forms electric current.Therefore, in the unit interval, ion can become through the quantity of barrier film unit area one of important indicator of weighing membrane properties.
The method of assessment lithium ion secondary battery membrane ionic conductance has two kinds, and the one, directly test barrier film conductivity, be exactly the surface resistance of testing barrier film in addition.While directly testing barrier film conductivity, between acquired results and actual value, have larger error, because barrier film itself is thinner, the distance between electrode is difficult to accurate control, in addition, the roughness of battery lead plate and barrier film surface of contact also appreciable impact the accuracy of test result.Therefore, distance between strict control electrode and the roughness of electrode and barrier film surface of contact, needed equipment is many, and test step is many, and testing cost is high.At present, mostly assess lithium ion secondary battery membrane by general surface resistance testing apparatus, due to the singularity of barrier film material, general surface resistance testing apparatus is method complexity in the time of test barrier film, complex operation, and cost is higher, and resultant error is larger, even there is potential safety hazard in some.
Barrier film surface resistance testing apparatus conventional in prior art comprises insulation crust, electric pole plate and lower electrode plate, wherein insulation crust is provided with the liquid bath of opening, lower electrode plate is placed in liquid bath bottom, the upper surface of lower electrode plate is surface polishing, barrier film to be tested is sheet and is placed on the upper surface of lower electrode plate, the lower surface of electric pole plate is surface polishing and is pressed on barrier film to be tested, barrier film to be tested covers the upper surface of lower electrode plate, the lower surface center of electric pole plate is aimed at the upper surface center of lower electrode plate, on, lower electrode plate is electrically connected respectively first, the second binding post.On electric pole plate, add insulation counterweight and insulation cover plate, the lower surface width of electric pole plate is less than the upper surface width of lower electrode plate, and barrier film width to be tested is greater than the upper surface width of lower electrode plate, and electric pole plate is the sheathed insulation collar also.
But, this equipment when test power-on and power-off pole plate and barrier film to be measured all immerse in electrolytic solution, acquired results can be subject to the impact of electrolytic solution and battery lead plate edge barrier film resistance, test error is large.
Utility model content
Technical problem to be solved in the utility model is for the large problem of lithium battery diaphragm surface resistance testing apparatus test error of the prior art, and a kind of lithium battery diaphragm surface resistance testing apparatus is provided.
It is as follows that the utility model solves the problems of the technologies described above adopted technical scheme:
A kind of lithium battery diaphragm surface resistance testing apparatus is provided, comprises base, transmission component, web joint, top electrode assembly and bottom electrode assembly; Described top electrode assembly is fixedly attached to web joint; Described bottom electrode assembly is fixed on the base of top electrode assembly below; Described transmission component is fixed on base, and is connected with web joint, and described transmission component can drive top electrode assembly to move up and down by web joint, adjusts top electrode assembly and is applied to the pressure on bottom electrode assembly; Described top electrode assembly comprises electric pole plate, and the lower surface of described electric pole plate is positioned at top electrode assembly bottom; Described bottom electrode assembly comprises lower insulating jacket and lower electrode plate, and described lower insulating jacket is fixed on base and has the lower mounting groove of opening upwards, and described lower electrode plate is arranged in lower mounting groove, and just right with electric pole plate; The sidewall of lower electrode plate and lower insulating jacket inwall form intake chute jointly; The thickness of lower electrode plate is equal to or greater than the thickness of lower mounting groove; Described electric pole plate and lower electrode plate all can be electrically connected to electrochemical workstation.
In the disclosed lithium battery diaphragm surface resistance of the utility model testing apparatus, the sidewall of lower electrode plate and lower insulating jacket inwall form intake chute jointly, in the time of test, as too much in the electrolytic solution adding, excessive electrolytic solution can flow in intake chute, can directly not contact with barrier film, can not form pole plate from power on and directly be communicated to lower electrode plate through membrane surface, thereby can eliminate the measuring error that this situation is brought.And, adjust the position of top electrode assembly by transmission component, make top electrode assembly apply certain pressure to bottom electrode assembly, the air in the barrier film being held between top electrode assembly and bottom electrode assembly can be extruded, eliminate the error that bubble brings.
Further, described top electrode assembly also comprises insulating jacket, and described upper insulating jacket is fixedly attached on web joint; Described upper insulating jacket has downward opening upper mounting groove, and described electric pole plate is arranged in mounting groove, and the thickness of described electric pole plate is equal to or greater than the thickness of mounting groove.
Further, the sidewall of electric pole plate and upper insulating jacket inwall form groove jointly, and described groove is just to intake chute.
Now, by coordinating and the cooperation of upper insulating jacket and lower insulating jacket of this groove and intake chute, form the clamping actions of two rings to barrier film, isolation mutually between two rings, can reduce that region beyond power-on and power-off pole plate forms conductive path and the test error that causes.
Further, described lower insulating jacket edge raises up, and is formed for holding the holding tank of insulating jacket; The inner surface configuration of described holding tank matches with the sidewall shape of upper insulating jacket.
Now, upper insulating jacket and lower insulating jacket form closed space, and excessive electrolytic solution is contained in intake chute, and the volatilization of electrolytic solution reduces, and have reduced the electrolytic solution error of bringing of volatilizing
Further, described electric pole plate plate face and lower electrode plate plate face shape are all identical with area.
Further, described electric pole plate and lower electrode plate are cylindrical shape.
Further, described top electrode assembly also comprises the pole that powers on, described in the pole that powers on be electrically connected with electric pole plate through upper insulating jacket; Described bottom electrode assembly also comprises bottom electrode post, and described bottom electrode post is electrically connected with lower electrode plate through lower insulating jacket.
Further, described testing apparatus also comprises pressure transducer, and described pressure transducer is arranged between web joint and upper insulating jacket, is applied to the pressure on bottom electrode assembly for measuring top electrode assembly.
Can control the pressure size being at every turn applied on electric pole plate and lower electrode plate by pressure transducer, each test is carried out under identical pressure, eliminate the operate miss that pressure difference is brought.
Further, described transmission component comprises support column, limiting plate and drive screw; Described support column is vertically fixed on base, and described limiting plate is fixed on support column, and described web joint is sheathed on support column; Described drive screw is straight down through limiting plate and web joint, and rotating being arranged on base; Described drive screw is threaded with web joint, and described drive screw can drive web joint to move up and down along support column.
Further, described drive screw upper end is provided with handwheel.
Accompanying drawing explanation
Fig. 1 is the front view of the lithium battery diaphragm surface resistance testing apparatus that provides of the utility model;
Fig. 2 is in the lithium battery diaphragm surface resistance testing apparatus that provides of the utility model, the cut-open view of bottom electrode assembly;
Fig. 3 is the partial enlarged drawing at A place in Fig. 2;
Fig. 4 is in the lithium battery diaphragm surface resistance testing apparatus that provides of the utility model, the cut-open view of top electrode assembly.
Reference numeral in Figure of description is as follows:
1, base; 2, bottom electrode assembly; 21, lower insulating jacket; 22, lower electrode plate; 23, bottom electrode post; 24, intake chute; 3, top electrode assembly; 31, upper insulating jacket; 32, electric pole plate; 33, the pole that powers on; 4, support column; 5, drive screw; 6, web joint; 7, pressure transducer; 8, limiting plate; 9, handwheel.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, term " thickness ", " on ", orientation or the position relationship of the indication such as D score, " vertically ", " level ", " top ", " end ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than indicate or imply that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
The lithium battery diaphragm surface resistance testing apparatus that the utility model provides comprises base, transmission component, web joint, top electrode assembly and bottom electrode assembly; Described top electrode assembly is fixedly attached to web joint; Described bottom electrode assembly is fixed on the base of top electrode assembly below; Described transmission component is fixed on base, and is connected with web joint, and described transmission component can drive top electrode assembly to move up and down by web joint, adjusts top electrode assembly and is applied to the pressure on bottom electrode assembly; Described top electrode assembly comprises electric pole plate, and the lower surface of described electric pole plate is positioned at top electrode assembly bottom; Described bottom electrode assembly comprises lower insulating jacket and lower electrode plate, and described lower insulating jacket is fixed on base and has the lower mounting groove of opening upwards, and described lower electrode plate is arranged in lower mounting groove, and just right with electric pole plate; The sidewall of lower electrode plate and lower insulating jacket inwall form intake chute jointly; The thickness of lower electrode plate is equal to or greater than the thickness of lower mounting groove; Described electric pole plate and lower electrode plate all can be electrically connected to electrochemical workstation.
In above-mentioned testing apparatus, the basis that base is whole equipment, for supporting all parts being installed on base, normally works it.
Transmission component is fixed on base, and is connected with web joint.Transmission component can be controlled web joint in the vertical direction and moves and locate.
Top electrode assembly is fixedly attached to web joint, and moving up and down of web joint can drive the motion of top electrode assembly in the vertical direction.
Bottom electrode assembly is fixed on the base of top electrode assembly below.When transmission component changes the position of top electrode assembly in the vertical direction by web joint, capable of regulating top electrode assembly puts on the pressure on bottom electrode assembly.
Top electrode assembly and bottom electrode assembly are the main function components of test barrier film surface resistance, comprise separately electric pole plate and lower electrode plate, electric pole plate and lower electrode plate contact measured examination simultaneously object, and forming loop can test.
In the utility model, the lower surface of described electric pole plate is positioned at top electrode assembly bottom, is convenient to electric pole plate in top electrode assembly decline process and contacts with lower electrode plate.
Described bottom electrode assembly comprises lower insulating jacket and lower electrode plate, and lower insulating jacket is fixed on base.And lower insulating jacket has the lower mounting groove of opening upwards, and described lower electrode plate is arranged in lower mounting groove, and just right with electric pole plate.
Now, electric pole plate facing each other and lower electrode plate can effectively clamp the barrier film to be measured between electric pole plate and lower electrode plate, are beneficial to the carrying out of test.
According to the utility model, the sidewall of lower electrode plate and lower insulating jacket inwall form intake chute jointly, time add excessive electrolytic solution for holding test, avoid the impact on test process of unnecessary electrolytic solution, reduce test error.
Meanwhile, the thickness of lower electrode plate is equal to or greater than the thickness of lower mounting groove, in the time that top electrode assembly contacts with bottom electrode assembly, guarantees that electric pole plate can effectively contact with lower electrode plate.
In the utility model, described top electrode assembly also comprises insulating jacket, and described upper insulating jacket is fixedly attached on web joint; Described upper insulating jacket has downward opening upper mounting groove, and described electric pole plate is arranged in mounting groove, and the thickness of described electric pole plate is equal to or greater than the thickness of mounting groove.
In bottom electrode assembly, lower electrode plate and lower insulating jacket formation intake chute are similar, and the sidewall of electric pole plate and upper insulating jacket inwall form groove jointly, and described groove is just to intake chute.Now, form the dual clamping action of power-on and power-off pole plates and upper and lower insulating jacket, and due to the existence of groove and intake chute, make dual clamping separate, can reduce that region beyond power-on and power-off pole plate forms conductive path and the test error that causes.
Know as is known to the person skilled in the art, electrolytic solution easily volatilizees, in the utility model, in order to reduce the volatilization of electrolytic solution to the impact of test result, under preferable case, described lower insulating jacket edge raises up, and is formed for holding the holding tank of insulating jacket; The inner surface configuration of described holding tank matches with the sidewall shape of upper insulating jacket.Now, form closed space upper insulating jacket and lower insulating jacket are inner, reduced the electrolytic solution error of bringing of volatilizing.
For ease of operation, electric pole plate plate face and lower electrode plate plate face shape are all identical with area.
The shape of electric pole plate and lower electrode plate preferably adopts cylindrical shape.
Upper/lower electrode plate clamps after barrier film to be measured, need be electrically connected to electrochemical workstation, and formation can be tested behind closed-loop path, so, in the utility model, described top electrode assembly also comprises the pole that powers on, described in the pole that powers on be electrically connected with electric pole plate through upper insulating jacket; Described bottom electrode assembly also comprises bottom electrode post, and described bottom electrode post is electrically connected with lower electrode plate through lower insulating jacket.
Connect wire by power-on and power-off pole, can be electrically connected to electrochemical workstation.
According to the utility model, in electrochemical workstation, use under AC impedence method (EIS) test constant pressure the AC impedance of electrolytic solution between electric pole plate and lower electrode plate.Wherein, AC impedence method (EIS) is the method for measurement pellicular front resistance conventional in prior art.As known to those skilled in the art, AC impedence method (EIS) is to utilize AC signal by a small margin to carry out disturbance to system, and observe system impact on disturbance response in the time of stable state.Generally, be that the interchange of a little amplitude (being generally sine wave) voltage signal is applied on electrode, make near electrode potential perturbation equilibrium electrod potential, reaching after stable state, measure amplitude or the phase of its response current signal, calculate successively the complex impedance of electrode.Then according to equivalent electrical circuit, by analysis and the parameter fitting of impedance spectrum, obtain the kinetic parameter of electrode reaction.
This kind of technology is to work approaching under equilibrium state, so do not need to understand in detail the behavior of electric current-overpotential response curve in the large region of overpotential, this advantage has been simplified the processing of dynamics and diffusion greatly; In addition than being easier to set up experimental provision, test process is very little on system impact.
In the utility model, be the pressure between capable of regulating top electrode assembly and bottom electrode assembly by transmission component.But, while repeatedly measurement, because manually-operated error easily makes each pressure difference, cause operate miss.For this reason, the disclosed testing apparatus of the utility model also comprises pressure transducer, and described pressure transducer is arranged between web joint and upper insulating jacket, is applied to the pressure on bottom electrode assembly for measuring top electrode assembly.
When operation, only need, according to pressure transducer, the pressure between top electrode assembly and bottom electrode assembly be adjusted to same value.
For above-mentioned transmission component, only need to drive web joint to adjust the position of top electrode assembly in the vertical direction, those skilled in the art can select and adjust its concrete structure according to actual conditions, for example, in the utility model, described transmission component comprises support column, limiting plate and drive screw; Described support column is vertically fixed on base, and described limiting plate is fixed on support column, and described web joint is sheathed on support column and can moves up and down along support column; Described drive screw is straight down through limiting plate and web joint, and rotating being arranged on base; Described drive screw is threaded with web joint.
Drive screw rotates can pass through the position of threaded adjusting web joint in the vertical direction, then changes the position of top electrode assembly in the vertical direction.
For the ease of operation, under preferable case, described drive screw upper end is provided with handwheel.
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 shows the disclosed lithium battery diaphragm surface resistance of the utility model testing apparatus, specifically comprises base 1, support column 4, limiting plate 8, drive screw 5, handwheel 9, web joint 6, pressure transducer 7, top electrode assembly 3 and bottom electrode assembly 2.
Drive screw 5 lower ends are connected on base 1 through limiting plate 8 and web joint 6.Upper end is fixed with handwheel 9.Web joint 6 is threaded with drive screw 5.Drive screw 5 is free to rotate, and drive screw 5 rotates the position that can change web joint 6 in the vertical directions.
On web joint 6 lower surfaces, be fixed with pressure transducer 7.Pressure transducer 7 belows are fixed with top electrode assembly 3.
On the base 1 of top electrode assembly 3 belows, be fixed with bottom electrode assembly 2.
Referring to Fig. 2, bottom electrode assembly 2 comprises lower insulating jacket 21, has the lower mounting groove of opening upwards in lower insulating jacket 21, and lower electrode plate 22 is arranged in lower mounting groove, and outstanding lower insulating jacket 21 upper surfaces of lower electrode plate 22 upper surfaces.Phase projection in lower insulating jacket 21 top surface edge, forms holding tank at lower insulating jacket 21 upper surfaces.
Lower insulating jacket 21 is passed in bottom electrode post 23 one end from lower insulating jacket 21 sides, and is fixedly connected with lower electrode plate 22, and the other end is positioned at outside lower insulating jacket 21.
Referring to Fig. 3, in lower mounting groove, between lower electrode plate 22 and lower insulating jacket 21 inside surfaces, there is intake chute 24.
Referring to Fig. 4, top electrode assembly 3 comprises insulating jacket 31, has the upper mounting groove that Open Side Down in upper insulating jacket 31.Electric pole plate 32 is arranged in mounting groove, and outstanding upper insulating jacket 31 lower surfaces of the lower surface of electric pole plate 32.
Power on pole 33 one end from upper insulating jacket 31 sides through upper insulating jacket 31, and be fixedly connected with electric pole plate 32, the other end is positioned at outside insulating jacket 31.
Get back to Fig. 1, the xsect of upper insulating jacket 31 is less than the xsect of lower insulating jacket 21.And the xsect of upper insulating jacket 31 is identical with the xsect of holding tank, in the time that top electrode assembly 3 is arranged on bottom electrode assembly 2, upper insulating jacket 31 is just in time filled in holding tank.
Adopt the process of the disclosed testing apparatus measurement of the utility model lithium battery diaphragm surface resistance as follows:
Before test, barrier film to be tested is struck out to the sample strip of suitable size, prepare the electrolytic solution of known intrinsic conductivity.
Be connected with electrochemical workstation with bottom electrode post 23 with the wire pole 33 that will power on, electrochemical workstation is connected with computer;
Under room temperature low-humidity environment, electrolytic solution is dropped in to lower electrode plate 22 surfaces, make electrolytic solution cover whole lower electrode plate 22 surfaces, make on lower insulating jacket 21 without electrolytic solution.
Rotate handwheel 9, electric pole plate 32 is declined and be pressed on lower electrode plate 22, and constant pressure is P.In electrochemical workstation, use under AC impedence method (EIS) test constant pressure the AC impedance of electrolytic solution between electric pole plate 32 and lower electrode plate 22, the resistance value of getting under 100kHz is designated as blank value R
0, for subsequent use.
Then rotate handwheel 9, electric pole plate 32 is risen.Remove residual electrolytic solution on power-on and power-off pole plate 22.
Drip same electrolytic solution on lower electrode plate 22 surfaces, the barrier film sample that strikes out a certain size is laid on lower electrode plate 22, make barrier film all cover lower electrode plate 22 surfaces, but be less than lower insulating jacket 21 surfaces.
Continue to drip appropriate electrolytic solution in diaphragm position corresponding to lower electrode surface, the barrier film position flat appearance that assurance contacts with lower electrode plate 22, rotates handwheel 9, and electric pole plate is pressed in for 32 times on lower electrode plate 22, while being P, stops operating to pressure.
The AC impedance of test barrier film, gets the resistance value Rs under 100kHz.
Calculate the barrier film resistance R=Rs-R of corresponding electric pole plate 32 and lower electrode plate 22 retained parts
0.
According to above-mentioned steps, barrier film to be tested is tested, barrier film sample position should be random, at least will get 10 samples to barrier film test of the same race, analyzes dispersion degree, averages as barrier film resistance R.
Due to electric pole plate 32 and lower electrode plate 22 shapes and area, and electric pole plate 32 is just to lower electrode plate 22, that is, the holding area of electric pole plate 32 and lower electrode plate 22 is the area S of electric pole plate 32 or lower electrode plate 22.
The surface resistance of barrier film is R
face=R × S.
Further describe below by embodiment.
The various barrier film surface resistances of respectively A, B two factories being produced are tested, wherein, the barrier film of A factory is made up of dry method, the barrier film of B factory is made up of wet method, and has applied high molecular polymer film on barrier film two sides, and " dry method " herein refers to the different manufacturing process of barrier film with " wet method ", and " film " is that the one of barrier film security is improved, also belong to manufacturing process, do not refer to the method for test, herein not method of testing step and the equipment of influence surface resistance of the manufacturing process of barrier film.
In the present embodiment, the area S=2.01cm of upper and lower two battery lead plate conducting metal clamping faces
2, the blank face resistance R of proofreading and correct under constant pressure
0be 0.238 Ω cm
2, below table 1 show test result and the mean value of the barrier film surface resistance that A, B factory produce.
Table 1
As can be seen from Table 1, the disclosed lithium battery diaphragm surface resistance of the utility model testing apparatus test error is little.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a lithium battery diaphragm surface resistance testing apparatus, is characterized in that, comprises base, transmission component, web joint, top electrode assembly and bottom electrode assembly;
Described top electrode assembly is fixedly attached to web joint; Described bottom electrode assembly is fixed on the base of top electrode assembly below; Described transmission component is fixed on base, and is connected with web joint, and described transmission component can drive top electrode assembly to move up and down by web joint, adjusts top electrode assembly and is applied to the pressure on bottom electrode assembly;
Described top electrode assembly comprises electric pole plate, and the lower surface of described electric pole plate is positioned at top electrode assembly bottom;
Described bottom electrode assembly comprises lower insulating jacket and lower electrode plate, and described lower insulating jacket is fixed on base and has the lower mounting groove of opening upwards, and described lower electrode plate is arranged in lower mounting groove, and just right with electric pole plate; The sidewall of lower electrode plate and lower insulating jacket inwall form intake chute jointly; The thickness of lower electrode plate is equal to or greater than the degree of depth of lower mounting groove;
Described electric pole plate and lower electrode plate all can be electrically connected to electrochemical workstation.
2. testing apparatus according to claim 1, is characterized in that, described top electrode assembly also comprises insulating jacket, and described upper insulating jacket is fixedly attached on web joint;
Described upper insulating jacket has downward opening upper mounting groove, and described electric pole plate is arranged in mounting groove, and the thickness of described electric pole plate is equal to or greater than the degree of depth of mounting groove.
3. testing apparatus according to claim 2, is characterized in that, the sidewall of electric pole plate and upper insulating jacket inwall form groove jointly, and described groove is just to intake chute.
4. according to the testing apparatus described in claim 2 or 3, it is characterized in that, described lower insulating jacket edge raises up, and is formed for holding the holding tank of insulating jacket; The inner surface configuration of described holding tank matches with the sidewall shape of upper insulating jacket.
5. testing apparatus according to claim 4, is characterized in that, described electric pole plate plate face and lower electrode plate plate face shape are all identical with area.
6. according to the testing apparatus described in any one in claim 1-3,5, it is characterized in that, described electric pole plate and lower electrode plate are cylindrical shape.
7. according to the testing apparatus described in any one in claim 2,3,5, it is characterized in that, described top electrode assembly also comprises the pole that powers on, described in the pole that powers on be electrically connected with electric pole plate through upper insulating jacket;
Described bottom electrode assembly also comprises bottom electrode post, and described bottom electrode post is electrically connected with lower electrode plate through lower insulating jacket.
8. according to the testing apparatus described in any one in claim 1-3,5, it is characterized in that, described testing apparatus also comprises pressure transducer, and described pressure transducer is arranged between web joint and upper insulating jacket, is applied to the pressure on bottom electrode assembly for measuring top electrode assembly.
9. testing apparatus according to claim 8, is characterized in that, described transmission component comprises support column, limiting plate and drive screw;
Described support column is vertically fixed on base, and described limiting plate is fixed on support column, and described web joint is sheathed on support column;
Described drive screw is straight down through limiting plate and web joint, and rotating being arranged on base; Described drive screw is threaded with web joint, and described drive screw can drive web joint to move up and down along support column.
10. testing apparatus according to claim 9, is characterized in that, described drive screw upper end is provided with handwheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320775705.1U CN203688666U (en) | 2013-11-29 | 2013-11-29 | Lithium battery diaphragm area resistance testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320775705.1U CN203688666U (en) | 2013-11-29 | 2013-11-29 | Lithium battery diaphragm area resistance testing device |
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| CN203688666U true CN203688666U (en) | 2014-07-02 |
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ID=51010551
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| CN201320775705.1U Expired - Fee Related CN203688666U (en) | 2013-11-29 | 2013-11-29 | Lithium battery diaphragm area resistance testing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976579A (en) * | 2017-12-12 | 2018-05-01 | 深圳市三慧智国际智能***有限公司 | A kind of vertical resistor test machine |
| CN108845163A (en) * | 2018-06-22 | 2018-11-20 | 中航锂电（江苏）有限公司 | A kind of point rupture of membranes test special fixture of lithium battery diaphragm |
| CN109342509A (en) * | 2018-11-23 | 2019-02-15 | 海宁红狮宝盛科技有限公司 | Contact resistance test machine and its method |
| CN113588721A (en) * | 2021-07-01 | 2021-11-02 | 江苏华海诚科新材料股份有限公司 | Clamp for high-resistance meter trial |
-
2013
- 2013-11-29 CN CN201320775705.1U patent/CN203688666U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976579A (en) * | 2017-12-12 | 2018-05-01 | 深圳市三慧智国际智能***有限公司 | A kind of vertical resistor test machine |
| CN108845163A (en) * | 2018-06-22 | 2018-11-20 | 中航锂电（江苏）有限公司 | A kind of point rupture of membranes test special fixture of lithium battery diaphragm |
| CN109342509A (en) * | 2018-11-23 | 2019-02-15 | 海宁红狮宝盛科技有限公司 | Contact resistance test machine and its method |
| CN113588721A (en) * | 2021-07-01 | 2021-11-02 | 江苏华海诚科新材料股份有限公司 | Clamp for high-resistance meter trial |
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