CN115184676A - Conductivity testing device and testing method for lithium battery diaphragm - Google Patents
Conductivity testing device and testing method for lithium battery diaphragm Download PDFInfo
- Publication number
- CN115184676A CN115184676A CN202210854791.9A CN202210854791A CN115184676A CN 115184676 A CN115184676 A CN 115184676A CN 202210854791 A CN202210854791 A CN 202210854791A CN 115184676 A CN115184676 A CN 115184676A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- fixed
- plate
- diaphragm
- fixed cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of lithium battery diaphragm testing, in particular to a conductivity testing device for a lithium battery diaphragm, which comprises a box body and a testing assembly positioned in the box body, wherein the front end surface of the box body is in an open shape, the front end of the box body is connected with a sealing door in a sliding manner through a sliding rail, a wetting mechanism and a fixing mechanism are arranged on the right side in the box body, the fixing mechanism is positioned on the right side of the wetting mechanism, and a driving mechanism is arranged on the rear end surface of the box body; the fixing mechanism comprises a fixing barrel which is rotatably connected to the rear side inside the box body, and a winding core is sleeved outside the fixing barrel.
Description
Technical Field
The invention relates to the technical field of lithium battery diaphragm testing, in particular to a device and a method for testing the conductivity of a lithium battery diaphragm.
Background
The lithium ion battery mainly comprises an anode, a cathode diaphragm and electrolyte. The diaphragm has the main functions of separating the positive electrode from the negative electrode and preventing the positive electrode from being contacted with the negative electrode to cause short circuit, and is provided with a microporous structure which allows ions to pass through and prevents electron conduction, and the microporous structure of the diaphragm restricts the conduction rate of lithium ions so as to directly influence the performance of the lithium ion battery, so the ionic conductivity of the diaphragm becomes one of important indexes for measuring the performance of the diaphragm;
the prior art discloses a device for testing the conductivity of a lithium battery diaphragm (with the publication number of CN 208999488U), which comprises a conductivity cell shell, a left electrode expansion device and a right electrode rotating device which are fixedly arranged in the conductivity cell shell, a left electrode fixedly connected with a left electrode stretching device, a right electrode fixedly connected with a right electrode rotating device, a diaphragm unreeling device fixed in the conductivity cell shell and an external conductivity meter; the left electrode and the right electrode are both connected with an external conductivity meter, and the electrode telescopic device and the right electrode rotating device are both connected with a controller. This utility model discloses a distance between left electrode telescoping device regulation left electrode, the right electrode realizes the test of lithium cell diaphragm conductivity, in the testing process, only needs to realize through right electrode rotary device that the diaphragm convolutes and has increased the diaphragm number of piles between left electrode and the right electrode promptly, and the simplified operation step has saved time and efficiency of software testing.
Usually lithium battery diaphragm need fully soak electrolyte with lithium battery diaphragm in the test procedure, then the cooperation electrode slice carries out the conductivity test to the diaphragm, this test device of lithium battery diaphragm conductivity is in the test procedure, at first need fix the winding core that has the lithium cell to the winding, then the fixed mode through external instrument causes the damage of winding core easily, especially paper rolls up the core, in case the core atress is uneven appears sunken or protruding, then outside winding lithium battery diaphragm appears dragging or crease equally, and then change the structure of lithium battery diaphragm, make follow-up measurement process test result inaccurate.
Therefore, the conductivity testing device and the conductivity testing method for the lithium battery diaphragm are provided.
Disclosure of Invention
The invention aims to provide a device and a method for testing the conductivity of a lithium battery diaphragm, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the conductivity testing device for the lithium battery diaphragm comprises a box body and a testing assembly positioned in the box body, wherein the front end face of the box body is in an open shape, the front end of the box body is connected with a sealing door in a sliding manner through a sliding rail, a wetting mechanism and a fixing mechanism are arranged on the right side in the box body, the fixing mechanism is positioned on the right side of the wetting mechanism, and a driving mechanism is arranged on the rear end face of the box body;
fixed establishment is including rotating the solid fixed cylinder of connection at the inside rear side of box, the core has been cup jointed to the outside of solid fixed cylinder, the outside of rolling up the core has the diaphragm around rolling up, the one end of diaphragm is through soaking the mechanism in rolling up to test component, the rear side of rolling up the core is provided with the fly leaf, the rear side of fly leaf is provided with the fixed plate, wherein the fly leaf cup joints at solid fixed cylinder outside and solid fixed cylinder swing joint, the fixed plate then cup joints the outside of fixing at the solid fixed cylinder, it has annular structure's gasbag two to splice between fixed plate and the fly leaf, gasbag two and solid fixed cylinder swing joint, the inboard of solid fixed cylinder is provided with the spacing subassembly that is used for restricting the activity board position.
Preferably, the surface annular equidistance of a fixed section of thick bamboo distributes and has three air bags of group one, air bag one splices with a fixed section of thick bamboo, the inboard of a fixed section of thick bamboo is provided with trachea one and trachea two with a set of air bag corresponding position, wherein trachea one is through trachea two and gasbag one intercommunication, the inside of fixed plate is provided with trachea three, the one end and the two intercommunications of gasbag three, the other end and a trachea intercommunication.
Preferably, the surface of a fixed section of thick bamboo is located and has seted up the activity groove between two adjacent gasbag one, the inside sliding connection in activity groove has the connecting rod, the one end of connecting rod is fixed with the medial surface of fly leaf, and the other end then extends to the inside of a fixed section of thick bamboo through the activity groove, the inside of a fixed section of thick bamboo corresponds the position with the movable rod and is provided with the rack, the connecting rod is with the one end fixedly connected with tooth that the rack corresponds, tooth and rack toothing, the rear end and the fixed section of thick bamboo inner wall of rack are fixed.
Preferably, the inner wall of the movable groove is symmetrically provided with sliding grooves, sliding blocks are connected to the inner portions of the sliding grooves in a sliding mode, the sliding blocks are fixedly connected with the connecting rods, and the rear end of the fixed cylinder is in transmission connection with the driving mechanism.
Preferably, the test assembly includes the deflector of fixed connection at the inside left side wall of box, the top of deflector is provided with electric putter, electric putter's one end is fixed with the box, and the other end is fixed with left electrode piece, the guide way has been seted up to the up end of deflector, the inside sliding connection of guide way has the guide block, the upper end of guide block is fixed with the dead lever, the dead lever upper end is cup jointed and is fixed outside electric putter drive end, the right side of left electrode piece corresponds the position and is provided with the rotor plate, the surface symmetry embedding of rotor plate is connected with right electrode piece, the rear end and the actuating mechanism transmission of rotor plate are connected.
Preferably, the driving mechanism comprises a motor arranged at a position corresponding to the rotating plate and on the rear end face of the box body, the rear end face of the box body is rotatably connected with a second gear corresponding to the fixed cylinder, the second gear is fixedly connected with the fixed cylinder through a rotating shaft, the first gear is in external meshing transmission connection with the first gear, the first gear is rotatably connected with the box body through a rotating shaft, a second belt pulley is fixedly sleeved on the outer surface of the rotating shaft on the first gear, the motor output shaft penetrates through the box body and extends into the box body to be fixed with the center of the rotating plate, a first belt pulley is fixedly sleeved on the outer surface of the motor output shaft, and the first belt pulley is in transmission connection with the second belt pulley through a belt.
Preferably, the ratio of the first gear to the second gear is 2.
Preferably, soak the mechanism including setting up at the left arc of fixed section of thick bamboo, the arc is the hollow structure design, and the both ends of arc are the opening form, and the inside cavity of hollow structure's arc also is the arc structural design, the up end of arc is provided with the liquid storage pot, the liquid storage pot passes through the transfer line intercommunication with the inside cavity of arc, inside and the inside electrolyte solution that all is provided with of liquid storage pot of arc, the diaphragm gets into through arc one end opening, and other end opening extends.
Preferably, the opening parts at the two ends of the arc plate are rotatably connected with a second roller shaft, the center position of the cavity inside the arc plate is rotatably connected with the second roller shaft, and the second roller shaft is positioned on the upper side of the diaphragm.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the stable supporting and fixing of the winding core wound with the lithium battery diaphragm can be realized by designing the fixing mechanism, so that the paper core is prevented from being sunken and damaged due to uneven stress of the winding core, and further the lithium battery diaphragm is folded, and the subsequent test and use are influenced;
2. according to the invention, by designing the soaking mechanism, the lithium battery diaphragm measured in the whole process can be fully soaked, and then the lithium battery diaphragm is accurately tested by matching with the testing assembly, so that the accuracy of a testing value is ensured;
3. according to the invention, the driving mechanism is designed to drive the rotating plate and the fixing mechanism in the testing assembly to rotate, so that the lithium battery diaphragm is prevented from being damaged by stress on the surface of the lithium battery diaphragm due to the fact that the lithium battery diaphragm is pulled by the rotation and traction of the rotating plate which is driven by a single driver, and the measuring result is not influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an overall structural view of the present invention;
FIG. 2 is a rear perspective view of the overall structure of the present invention;
FIG. 3 is a rear view of the overall structure of the present invention;
FIG. 4 is a front cross-section of the overall structure of the present invention;
FIG. 5 is an enlarged view of the invention at B of FIG. 4;
FIG. 6 is an enlarged view of the invention at D of FIG. 5;
FIG. 7 is a schematic cross-sectional view taken at C-C of FIG. 4 in accordance with the present invention;
fig. 8 is an enlarged view of the invention at a in fig. 4.
Description of the reference numerals:
1. a box body; 11. a sealing door; 2. a wetting mechanism; 21. a liquid storage tank; 22. a transfusion tube; 23. an arc-shaped plate; 24. an electrolyte; 25. a first roll shaft; 26. a second roll shaft; 3. a fixing mechanism; 31. a fixed cylinder; 32. a connecting rod; 33. a first air bag; 34. a first trachea; 35. a second trachea; 36. a second air bag; 37. a fixing plate; 38. a third trachea; 39. a movable plate; 321. a slider; 322. a movable groove; 323. a chute; 324. teeth; 325. a rack; 4. a drive mechanism; 41. a motor; 42. a belt; 43. a first gear; 44. a second gear; 45. a first belt pulley; 46. a second belt pulley; 441. a rotating shaft; 5. testing the component; 51. a guide plate; 52. an electric push rod; 53. a guide groove; 54. a guide block; 55. fixing the rod; 56. a left electrode plate; 57. a rotating plate; 58. a right electrode plate; 6. a diaphragm; 61. and (6) winding cores.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, the present invention provides a technical solution:
the conductivity testing device for the lithium battery diaphragm comprises a box body 1 and a testing assembly 5 positioned in the box body 1, wherein the front end face of the box body 1 is open, the front end of the box body 1 is connected with a sealing door 11 in a sliding manner through a sliding rail, a wetting mechanism 2 and a fixing mechanism 3 are arranged on the right side in the box body 1, the fixing mechanism 3 is positioned on the right side of the wetting mechanism 2, and a driving mechanism 4 is arranged on the rear end face of the box body 1;
fixed establishment 3 is including rotating the solid fixed cylinder 31 of connecting at the inside rear side of box 1, gu fixed cylinder 31's outside has cup jointed book core 61, it has diaphragm 6 to roll up the outside of core 61 around rolling up, diaphragm 6's one end is through soaking mechanism 2 around rolling up to test component 5, gu fixed cylinder 61's rear side is provided with fly leaf 39, fly leaf 39's rear side is provided with fixed plate 37, wherein fly leaf 39 cup joints at solid fixed cylinder 31 outside and solid fixed cylinder 31 swing joint, fixed plate 37 then cup joints the outside of fixing at solid fixed cylinder 31, it has annular structure's gasbag two 36 to glue between fixed plate 37 and the fly leaf 39, gasbag two 36 and solid fixed cylinder 31 swing joint, gu fixed cylinder 31's inboard is provided with the spacing subassembly that is used for restricting fly leaf 39 positions.
By adopting the technical scheme, the stable supporting and fixing of the winding core 61 wound with the lithium battery diaphragm 6 can be realized by designing the fixing mechanism 3, the paper core is prevented from being sunken and damaged due to uneven stress of the winding core 61, and further the lithium battery diaphragm 6 is prevented from generating creases to influence subsequent tests and use, the accuracy of test values can be improved, meanwhile, the damage of the lithium battery diaphragm 6 is reduced, and the test cost is reduced.
As an embodiment of the present invention, as shown in fig. 4, 5 and 7, three groups of first air bags 33 are annularly and equidistantly distributed on the outer surface of the fixed cylinder 31, the first air bags 33 are bonded to the fixed cylinder 31, a first air pipe 34 and a second air pipe 35 are arranged at positions corresponding to the first air bags 33 on the inner side of the fixed cylinder 31, wherein the first air pipe 34 is communicated with the first air bags 33 through the second air pipes 35, a third air pipe 38 is arranged inside the fixed plate 37, one end of the third air pipe 38 is communicated with the second air bags 36, the other end of the third air pipe is communicated with the first air pipe 34, a movable groove 322 is formed between two adjacent first air bags 33 on the outer surface of the fixed cylinder 31, a connecting rod 32 is slidably connected inside the movable groove 322, one end of the connecting rod 32 is fixed to the inner side surface of the movable plate 39, the other end of the connecting rod extends into the fixed cylinder 31 through the movable groove 322, a rack 325 is arranged at a position corresponding to the movable rod inside the fixed cylinder 31, teeth 324 are fixedly connected to one end of the connecting rod 32 corresponding to the rack 325, the teeth are engaged with the rack 325, and the fixed inner wall of the fixed cylinder 31.
By adopting the technical scheme, in operation, a user inserts the winding core 61 wound with the lithium battery diaphragm 6 into the winding core 61 from the front end of the fixed cylinder 31 and then sleeves the winding core 61 outside the fixed cylinder 31, then slowly pushes the winding core 61 and the lithium battery diaphragm 6, at the moment, the winding core 61 moves towards the rear side outside the fixed cylinder 31, when the rear end of the winding core 61 contacts the movable plate 39, the movable plate 39 continues to push and move, at the moment, the movable plate 39 is pressed by the winding core 61 and stably moves in the movable groove 322 on the fixed cylinder 31 through the connecting rod 32, so that the movable plate 39 moves outside the fixed cylinder 31, at the moment, the air bag II 36 between the movable plate 39 and the fixed plate 37 is pressed, gas inside the air bag II 36 is compressed and then is conveyed into the air pipe I34 through the air pipe III 38 inside the fixed plate 37, and then is conveyed into the air bag I33 through the air pipe II 35, at the moment, the air bag I33 between the winding core 61 and the fixed cylinder 31 inflates and expands, with the continuous pushing of the winding core 61 and the compression of the second air bag 36, the first air bag 33 gradually expands to fill a gap between the fixed cylinder 31 and the winding core 61, so as to fix the fixed cylinder 31 to the winding core 61, in the displacement process of the movable plate 39, because one end of the rack 325 is connected with the fixed cylinder 31 and the rack 325 is made of high-toughness metal, the teeth 324 are continuously and dislocated and meshed on the rack 325 at the moment, after the movable plate 39 stops, the movable plate 39 is meshed with the rack 325 through the teeth 324 at the lower end of the connecting rod 32 to realize limiting and fixing at the moment, then the subsequent testing work of the lithium battery diaphragm 6 is started, after the testing is finished, a user presses the free end of the rack 325 towards the center of the fixed cylinder 31 by hand, so as to force the teeth 324 to be separated from the rack 325, so that the movable plate 39 can be reset again, and the gas in the first air bag 33 flows back to the second air bag 36, the winding core 61 is easily removed.
As an embodiment of the present invention, as shown in fig. 5 and 7, sliding grooves 323 are symmetrically formed on an inner wall of the movable groove 322, a sliding block 321 is slidably connected inside the sliding groove 323, the sliding block 321 is fixedly connected to the connecting rod 32, and a rear end of the fixed cylinder 31 is in transmission connection with the driving mechanism 4.
By adopting the above technical solution, when the movable plate 39 moves on the fixed cylinder 31 through the connecting rod 32, in order to further ensure the stable displacement of the movable plate 39 and prevent the movable plate 39 from being unevenly and askew due to stress, the sliding groove 323 is formed in the movable groove 322, the sliding groove 323 is matched with the sliding block 321 on the connecting rod 32, and the sliding connection between the sliding groove 323 and the sliding block 321 ensures the stable movement of the connecting rod 32 in the movable groove 322.
As an embodiment of the present invention, as shown in fig. 1 and fig. 4, the testing assembly 5 includes a guide plate 51 fixedly connected to a left side wall inside the box 1, an electric push rod 52 is disposed above the guide plate 51, one end of the electric push rod 52 is fixed to the box 1, the other end of the electric push rod is fixed to a left electrode plate 56, a guide groove 53 is disposed on an upper end surface of the guide plate 51, a guide block 54 is slidably connected inside the guide groove 53, a fixing rod 55 is fixed to an upper end of the guide block 54, an upper end of the fixing rod 55 is fixedly sleeved outside a driving end of the electric push rod 52, a rotating plate 57 is disposed at a position corresponding to a right side of the left electrode plate 56, a right electrode plate 58 is symmetrically embedded and connected to an outer surface of the rotating plate 57, and a rear end of the rotating plate 57 is in transmission connection with the driving mechanism 4.
Through adopting above-mentioned technical scheme, after roll core 61 is fixed by fixed establishment 3, lithium cell diaphragm 6 passes to soak mechanism 2 at rotor plate 57 surface fixed around rolling up this moment, then the user passes through the operation of external equipment drive electric putter 52, electric putter 52 then under the sliding connection of guide way 53 with guide block 54, the steady displacement to rotor plate 57 right electrode piece 58 of drive left electrode piece 56, until left electrode piece 56 contact be located the outside lithium cell diaphragm 6 of rotor plate 57 after, stop after applying certain pressure, then external conductivity tester measures lithium cell diaphragm 6, when needs are tested multilayer lithium cell diaphragm 6, the user rotates through control actuating mechanism 4 operation drive rotor plate 57, and then the test of winding multilayer lithium cell diaphragm 6 can.
As an embodiment of the present invention, as shown in fig. 3 and fig. 4, the driving mechanism 4 includes a motor 41 disposed at a position corresponding to the rotating plate 57 on the rear end surface of the box body 1, a second gear 44 is rotatably connected to a position corresponding to the fixed cylinder 31 on the rear end surface of the box body 1, the second gear 44 is fixedly connected to the fixed cylinder 31 through a rotating shaft 441, a first gear 43 is engaged and drivingly connected to the outside of the second gear 44, the first gear 43 is rotatably connected to the box body 1 through a rotating shaft, a second belt pulley 46 is fixedly sleeved on an outer surface of the rotating shaft on the first gear 43, an output shaft of the motor 41 extends through the box body 1 to the inside of the box body 1 and is fixedly connected to the center of the rotating plate 57, a first belt pulley 45 is fixedly sleeved on an outer surface of the output shaft of the motor 41, and the first belt pulley 45 is drivingly connected to the second belt pulley 46 through a belt 42.
By adopting the above technical scheme, based on the above embodiment, when a test is required to wind multiple lithium battery diaphragms 6 through the rotating plate 57, a user controls the motor 41 to operate, after the rotating plate 57 is driven by the output shaft of the motor 41 to rotate to wind the lithium battery diaphragms 6 by a specified number of layers, the rotating plate 57 is in a vertical state, the electric push rod 52 is continuously started to drive the left electrode plate 56 and the right electrode plate 58 to correspondingly test the lithium battery diaphragms 6, in the process of rotating the rotating plate 57 to wind the lithium battery diaphragms 6, the electric push rod 52 controls the left electrode plate 56 to reset, in the process of driving the rotating plate 57 to rotate by the motor 41, the first gear 43 is driven to rotate by the first belt pulley 45, the second belt pulley 46 and the belt 42, and the second gear 44 fixed to the fixed cylinder 31 through the rotating shaft 441 is synchronously rotated under the meshing transmission connection with the first gear 43, so that the lithium battery diaphragms 6 are prevented from being pulled by the rotating plate 57, and damage to the cadmium battery diaphragms 6 is easily caused.
As an embodiment of the present invention, as shown in fig. 4, the ratio of the first gear 43 to the second gear 44 is 2.
By adopting the above technical scheme, because of the flat shape of the rotating plate 57, when the motor 41 drives the rotating plate 57 to rotate to wind the lithium battery diaphragm 6, the unwinding speed of the fixed cylinder 31 cannot be synchronous with the rotation speed of the rotating plate 57, otherwise, the lithium battery diaphragm 6 is easily damaged by pulling, so that by changing the ratio of the first gear 43 to the second gear 44, the rotation speed of the second gear 44 is greater than that of the first gear 43, and the lithium battery diaphragm 6 can not be damaged by pulling greatly when the rotating plate 57 winds the lithium battery diaphragm 6.
As an embodiment of the present invention, as shown in fig. 4 and 8, the soaking mechanism 2 includes an arc-shaped plate 23 disposed on the left side of the fixed cylinder 31, the arc-shaped plate 23 is designed in a hollow structure, two ends of the arc-shaped plate 23 are open, an inner cavity of the arc-shaped plate 23 in the hollow structure is also designed in an arc-shaped structure, a liquid storage tank 21 is disposed on an upper end surface of the arc-shaped plate 23, the liquid storage tank 21 is communicated with the inner cavity of the arc-shaped plate 23 through a liquid transport tube 22, electrolyte 24 is disposed inside the arc-shaped plate 23 and inside the liquid storage tank 21, the diaphragm 6 enters through an opening at one end of the arc-shaped plate 23, and extends out through an opening at the other end.
By adopting the technical scheme, the testing device for the conductivity of the lithium battery diaphragm 6 in the prior art adopts the right electrode rotating device to realize the winding of the diaphragm 6 so as to achieve the conductivity measurement of the diaphragm 6 with different layers of the diaphragm 6 in the using process, so that the diaphragm 6 can be ensured to be fully soaked to meet the testing requirement when the single-layer diaphragm 6 is measured for the first time, but the diaphragm 6 with the electrolyte 24 can be accelerated to be dried in the waiting process of multi-layer multi-time diaphragm 6 detection, and the situation that the electrolyte 24 fully soaks the diaphragm 6 so as to achieve the measuring standard is difficult to meet, thereby influencing the measuring accuracy, therefore, the invention designs the soaking mechanism 2 to ensure that the lithium battery diaphragm 6 always passes through the arc-shaped plate 23, the electrolyte 24 in the arc-shaped plate 23 does not pass through the partial surface of the lithium battery diaphragm 6, and further can fully soak the lithium battery diaphragm 6 passing through the cavity in the arc-shaped plate 23 in the subsequent process of pulling the lithium battery diaphragm 6 by the rotating plate 57, and the electrolyte 24 in the arc-shaped plate 23 is always in a point-drop type supplementing state under the action of the liquid storage tank 21 and the infusion tube 22, thereby meeting the requirement that the lithium battery diaphragm 6 can be fully soaked by the electrolyte.
As an embodiment of the present invention, as shown in fig. 4 and 8, two roll shafts 26 are rotatably connected to openings at two ends of the arc plate 23, a second roll shaft 26 is rotatably connected to a central position of a cavity inside the arc plate 23, and the second roll shaft 26 is located on the upper side of the diaphragm 6.
Through adopting above-mentioned technical scheme, because the lithium battery diaphragm 6 of wearing the inside cavity of arc 23 can receive the influence of arc 23 at rotor plate 57 traction in-process, and then there is the friction with arc 23 opening part, consequently, in order to avoid lithium battery diaphragm 6 damage, consequently, through adding roller two 26, move along with lithium battery diaphragm 6 through roller two 26 and rotate, reduce frictional resistance and damage, simultaneously the effect aim at of roller one 25 changes the angle to lithium battery diaphragm 6 through arc 23, make its submergence all the time in electrolyte 24 to lithium battery diaphragm 6 through arc 23, and then soak diaphragm 6, the effect aim at of arc 23 is under arc angle, when preventing lithium battery diaphragm 6 and pulling, take out arc 23 outside with too much 24 of electrolyte, cause the waste of electrolyte 24.
A testing method of a conductivity testing device of a lithium battery diaphragm comprises the following steps:
s1, a user fixes and limits the winding core 61 wound with the lithium battery diaphragm 6 through a fixing mechanism 3;
s2: after the winding core 61 is fixed by the fixing mechanism 3, the lithium battery diaphragm 6 passes through the soaking mechanism 2 and is wound on the outer surface of the rotating plate 57 for fixing, and an external conductivity tester is externally connected to measure the lithium battery diaphragm 6;
s3: the lithium battery diaphragm 6 passing through the soaking mechanism 2 is immersed and soaked by the soaking mechanism 2, so that the requirement that the lithium battery diaphragm 6 is fully soaked by the electrolyte 24 is met;
s4: when a test of winding a plurality of layers of lithium battery diaphragms 6 by the rotating plate 57 is required, the motor 41 is controlled to operate, after the rotating plate 57 is driven to rotate to wind the lithium battery diaphragms 6 by a specified number of layers, the rotating plate 57 is in a vertical state, and the electric push rod 52 is continuously started to drive the left electrode plate 56 and the right electrode plate 58 to correspondingly test the lithium battery diaphragms 6;
the working principle is as follows: when the lithium battery diaphragm 6 is in operation, a user inserts the winding core 61 wound with the lithium battery diaphragm 6 into the winding core 61 from the front end of the fixed cylinder 31 and sleeves the fixed cylinder 31, then slowly pushes the winding core 61 and the lithium battery diaphragm 6, at the same time, the winding core 61 moves towards the rear side outside the fixed cylinder 31, when the rear end of the winding core 61 contacts the movable plate 39, the movable plate 39 continues to push and move, at the same time, the movable plate 39 is pressed by the winding core 61, the connecting rod 32 is matched with the sliding block 321 on the connecting rod 32 through the sliding groove 323 in the movable groove 322 on the fixed cylinder 31, the sliding connection between the two ensures that the connecting rod 32 moves stably in the movable groove 322, so that the movable plate 39 moves outside the fixed cylinder 31, at the same time, the air bag two 36 between the movable plate 39 and the fixed plate 37 is pressed, the gas in the air bag two 36 is compressed and then conveyed into the air pipe one 34 through the air pipe three 38 in the fixed plate 37, and then conveyed into the air pipe two 33, at this time, the first air bag 33 located between the winding core 61 and the fixed cylinder 31 is inflated and expanded, the second air bag 36 is compressed along with the continuous pushing of the winding core 61, the first air bag 33 gradually expands to fill a gap between the fixed cylinder 31 and the winding core 61, the fixed cylinder 31 is fixed to the winding core 61, in the displacement process of the movable plate 39, as one end of the rack 325 is connected with the fixed cylinder 31 and the rack 325 is made of high-toughness metal, the teeth 324 are constantly staggered and meshed on the rack 325 at this time, after the movable plate 39 stops, the movable plate 39 is meshed with the rack 325 through the teeth 324 at the lower end of the connecting rod 32 to realize limiting and fixing, then the subsequent test work of the lithium battery diaphragm 6 is started, after the test is finished, a user presses the free end of the rack 325 to the center of the fixed cylinder 31 by hand to force the teeth 324 to be separated from the rack 325, so that the movable plate 39 can be reset again, the reworked gas of the first air bag 33 flows back to the second air bag 36, and the winding core 61 is easily taken down;
after the winding core 61 is fixed by the fixing mechanism 3, the lithium battery diaphragm 6 passes through the wetting mechanism 2 and is wound on the outer surface of the rotating plate 57 for fixing, then a user drives the electric push rod 52 to operate through external equipment, the electric push rod 52 drives the left electrode plate 56 to stably move towards the right electrode plate 58 of the rotating plate 57 under the sliding connection of the guide groove 53 and the guide block 54, the operation is stopped after the left electrode plate 56 contacts the lithium battery diaphragm 6 positioned outside the rotating plate 57 and a certain pressure is applied, then an external conductivity tester is externally connected to measure the lithium battery diaphragm 6, and when the multi-layer lithium battery diaphragm 6 needs to be tested, the user controls the driving mechanism 4 to operate to drive the rotating plate 57 to rotate, and then the multi-layer lithium battery diaphragm 6 is wound for testing;
when a test of winding a plurality of lithium battery diaphragms 6 by the rotating plate 57 is required, a user controls the motor 41 to operate, the rotating plate 57 is driven by an output shaft of the motor 41 to rotate to wind the lithium battery diaphragms 6 by a specified number of layers, the rotating plate 57 is in a vertical state, the electric push rod 52 is continuously started to drive the left electrode plate 56 and the right electrode plate 58 to correspondingly test the lithium battery diaphragms 6, the electric push rod 52 controls the left electrode plate 56 to reset in the process of winding the lithium battery diaphragms 6 by the rotating plate 57, the first belt pulley 45, the second belt pulley 46 and the belt 42 are also used for driving the first gear 43 to rotate in a transmission manner in the process of driving the rotating plate 57 to rotate by the motor 41, and the second gear 44 fixed with the fixed cylinder 31 by the rotating shaft 441 is synchronously rotated in a meshing transmission connection with the first gear 43, so that the lithium battery diaphragms 6 are prevented from being pulled by the single driving of the rotating plate 57 and damaged by the cadmium battery diaphragms 6, and the rotating speed of the rotating plate 57 is not synchronous with the rotating speed of the lithium battery diaphragms 6 caused by changing the ratio of the first gear 43 to the lithium battery diaphragms 44, so that the lithium battery diaphragms 6 cannot be wound by the rotating shaft 43 and the lithium battery diaphragms 6 is prevented from being wound by the rotating shaft 6;
in the prior art, a right electrode rotating device is adopted to realize the winding of the diaphragm 6 so as to achieve the conductivity measurement of the diaphragm 6 with different layers of the diaphragm 6 in the use process of the testing device of the lithium battery diaphragm 6 in the prior art, so that the diaphragm 6 can be ensured to be fully soaked to meet the testing requirement when the first (namely, single-layer diaphragm 6) is measured, but the diaphragm 6 with the electrolyte 24 can be accelerated to be dried in the waiting process of multi-layer multi-time diaphragm 6 detection, and the situation that the electrolyte 24 fully soaks the diaphragm 6 to achieve the measuring standard is difficult to meet, so that the measuring accuracy is influenced, therefore, the invention designs the soaking mechanism 2 to ensure that the lithium battery diaphragm 6 always passes through the arc-shaped plate 23 and the electrolyte 24 in the arc-shaped plate 23 does not pass through the partial surface of the lithium battery diaphragm 6, so that the lithium battery diaphragm 6 passing through the cavity in the arc-shaped plate 23 can be fully soaked by the electrolyte 24 in the arc-shaped plate 23 under the action of the liquid storage tank 21 and the liquid transport pipe 22, and is always in a point-dropping type supplementary state, and further meets the requirement that the lithium battery 6 is fully soaked by the electrolyte 24;
because the lithium battery diaphragm 6 of wearing the inside cavity of arc 23 can receive the influence of arc 23 at rotor plate 57 traction in-process, and then there is the opening part friction with arc 23, consequently, in order to avoid lithium battery diaphragm 6 damage, consequently, through adding roller two 26, move along with lithium battery diaphragm 6 through roller two 26 and rotate, reduce frictional resistance and damage, the effect aim at of roller one 25 changes the angle to lithium battery diaphragm 6 through arc 23 simultaneously, make it submerge all the time in electrolyte 24 to lithium battery diaphragm 6 through arc 23, and then soak diaphragm 6, the effect aim at of arc 23 is under arc angle, when preventing lithium battery diaphragm 6 and pulling, take out arc 23 outside with electrolyte 24 is too much, cause the waste of electrolyte 24.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a lithium battery diaphragm's conductivity testing arrangement, includes box (1) and test component (5) that are located box (1) inside which characterized in that: the front end face of the box body (1) is open, the front end of the box body (1) is connected with a sealing door (11) in a sliding mode through a sliding rail, a soaking mechanism (2) and a fixing mechanism (3) are arranged on the right side inside the box body (1), the fixing mechanism (3) is located on the right side of the soaking mechanism (2), and a driving mechanism (4) is arranged on the rear end face of the box body (1);
fixed establishment (3) are including rotating fixed cylinder (31) of connecting at the inside rear side of box (1), core (61) has been cup jointed to the outside of fixed cylinder (31), the outside of rolling up core (61) has diaphragm (6) around rolling up, the one end of diaphragm (6) is through soaking mechanism (2) around rolling up to test component (5) in, the rear side of rolling up core (61) is provided with fly leaf (39), the rear side of fly leaf (39) is provided with fixed plate (37), wherein fly leaf (39) cup joint at fixed cylinder (31) outside and fixed cylinder (31) swing joint, fixed plate (37) then cup joint the outside of fixing at fixed cylinder (31), the gasbag two (36) that splice between fixed plate (37) and fly leaf (39) has annular structure, gasbag two (36) and fixed cylinder (31) swing joint, the inboard of fixed cylinder (31) is provided with the spacing subassembly that is used for restricting fly leaf (39) position.
2. The conductivity test device of a lithium battery separator according to claim 1, wherein: the surface annular equidistance of fixed section of thick bamboo (31) distributes and has three groups gasbag one (33), gasbag one (33) and fixed section of thick bamboo (31) splice, the inboard of fixed section of thick bamboo (31) corresponds the position with a set of gasbag one (33) and is provided with trachea one (34) and trachea two (35), wherein trachea one (34) are through trachea two (35) and gasbag one (33) intercommunication, the inside of fixed plate (37) is provided with trachea three (38), the one end and the gasbag two (36) intercommunication of trachea three (38), the other end and trachea one (34) intercommunication.
3. The conductivity test device for lithium battery separator according to claim 2, wherein: the surface of a fixed cylinder (31) is located and has seted up movable groove (322) between two adjacent gasbag (33), the inside sliding connection of movable groove (322) has connecting rod (32), the one end of connecting rod (32) is fixed with the medial surface of fly leaf (39), and the other end then extends to the inside of a fixed cylinder (31) through movable groove (322), the inside of a fixed cylinder (31) corresponds the position with the fly rod and is provided with rack (325), one end fixedly connected with tooth (324) that connecting rod (32) and rack (325) correspond, tooth (324) and rack (325) meshing, the rear end and a fixed cylinder (31) inner wall of rack (325) are fixed.
4. The conductivity test device of a lithium battery separator as claimed in claim 3, wherein: the inner wall of the movable groove (322) is symmetrically provided with sliding grooves (323), the sliding grooves (323) are connected with sliding blocks (321) in a sliding mode, the sliding blocks (321) are fixedly connected with connecting rods (32), and the rear end of the fixed cylinder (31) is in transmission connection with a driving mechanism (4).
5. The conductivity test device of a lithium battery separator according to claim 1, wherein: test component (5) are including deflector (51) of fixed connection at the inside left side wall of box (1), the top of deflector (51) is provided with electric putter (52), the one end and box (1) of electric putter (52) are fixed, and the other end is fixed with left electrode piece (56), guide way (53) have been seted up to the up end of deflector (51), the inside sliding connection of guide way (53) has guide block (54), the upper end of guide block (54) is fixed with dead lever (55), the cup joint is fixed in electric putter (52) drive end outside on dead lever (55), the right side of left electrode piece (56) corresponds the position and is provided with rotor plate (57), the surface symmetry embedding of rotor plate (57) is connected with right electrode piece (58), the rear end and the actuating mechanism (4) transmission of rotor plate (57) are connected.
6. The conductivity test device for lithium battery separator according to claim 1, wherein: the driving mechanism (4) comprises a motor (41) arranged at a position corresponding to the rotating plate (57) on the rear end face of the box body (1), a second gear (44) is rotatably connected with the corresponding position of the fixed cylinder (31) on the rear end face of the box body (1), the second gear (44) is fixedly connected with the fixed cylinder (31) through a rotating shaft (441), the second gear (44) is in external meshing transmission connection with a first gear (43), the first gear (43) is rotatably connected with the box body (1) through a rotating shaft, a second belt pulley (46) is fixedly sleeved on the outer surface of the rotating shaft on the first gear (43), an output shaft of the motor (41) penetrates through the box body (1) and extends to the inside of the box body (1) to be fixed with the center of the rotating plate (57), a first belt pulley (45) is fixedly sleeved on the outer surface of the output shaft of the motor (41), and the first belt pulley (45) is in transmission connection with the second belt pulley (46) through a belt (42).
7. The conductivity test device for lithium battery separator according to claim 6, wherein: the ratio of the first gear (43) to the second gear (44) is 2.
8. The conductivity test device for lithium battery separator according to claim 1, wherein: soak mechanism (2) including setting up at left arc (23) of fixed cylinder (31), arc (23) are hollow structure design, and the both ends of arc (23) are the opening form, and the inside cavity of arc (23) of hollow structure also is arc structural design, the up end of arc (23) is provided with liquid storage pot (21), liquid storage pot (21) pass through transfer line (22) intercommunication with arc (23) inside cavity, arc (23) inside all is provided with electrolyte (24) with liquid storage pot (21), diaphragm (6) get into through arc (23) one end opening, and other end opening extends.
9. The conductivity testing device of a lithium battery separator as claimed in claim 8, wherein: the two ends of the arc-shaped plate (23) are provided with two roll shafts (26) in a rotating mode, the center of the inner cavity of the arc-shaped plate (23) is provided with the two roll shafts (26) in a rotating mode, and the two roll shafts (26) are located on the upper side of the diaphragm (6).
10. The method for testing the conductivity test device of the lithium battery separator according to claim 1, wherein: the method comprises the following steps:
s1, fixing and limiting a winding core wound with a lithium battery diaphragm through a fixing mechanism by a user;
s2: after the winding core is fixed by the fixing mechanism, the lithium battery diaphragm penetrates through the wetting mechanism and is wound on the outer surface of the rotating plate to be fixed, and an external conductivity tester is externally connected to measure the lithium battery diaphragm;
s3: the lithium battery diaphragm passing through the soaking mechanism is immersed and soaked by the soaking mechanism, so that the requirement that the lithium battery diaphragm is fully soaked by electrolyte is met;
s4: when the multi-layer lithium battery diaphragm is required to be wound by the rotating plate for testing, the motor is controlled to operate, the rotating plate is driven to rotate to wind the designated number of layers on the lithium battery diaphragm, the rotating plate is in a vertical state, and the electric push rod is continuously started to drive the left electrode plate and the right electrode plate to correspondingly test the lithium battery diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210854791.9A CN115184676A (en) | 2022-07-20 | 2022-07-20 | Conductivity testing device and testing method for lithium battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210854791.9A CN115184676A (en) | 2022-07-20 | 2022-07-20 | Conductivity testing device and testing method for lithium battery diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115184676A true CN115184676A (en) | 2022-10-14 |
Family
ID=83518781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210854791.9A Withdrawn CN115184676A (en) | 2022-07-20 | 2022-07-20 | Conductivity testing device and testing method for lithium battery diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115184676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
-
2022
- 2022-07-20 CN CN202210854791.9A patent/CN115184676A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115184676A (en) | Conductivity testing device and testing method for lithium battery diaphragm | |
| CN211812497U (en) | Tension control device for diaphragm of laminated battery | |
| CN212798841U (en) | Coiling mechanism among CPP film blown film unit | |
| CN112845674A (en) | Automatic tab folding flexible shaping device and method for power battery | |
| CN117977009A (en) | Battery lamination device | |
| CN201087907Y (en) | Negative electrode piece structure of lithium battery | |
| CN110323496A (en) | A kind of multistation lamination device and multistation laminating method | |
| CN206282938U (en) | Pole piece wrap-up | |
| CN116742150A (en) | Pole piece winding machine for polymer battery production | |
| CN109624476A (en) | A kind of process units and its manufacturing method of copper lithium composite band | |
| CN208999488U (en) | Testing arrangement of lithium cell diaphragm conductivity | |
| CN213770676U (en) | Coiling mechanism is used in insulating sticky tape production | |
| CN205944232U (en) | Lithium ion battery pole piece is automatic production line's roll -in system of cutting in a complete set in succession | |
| CN213002125U (en) | Pole piece rolling device | |
| CN201438491U (en) | Lithium ion battery pole piece winding device | |
| CN110429347A (en) | Lithium ion battery winding needle with adjustable winding diameter | |
| CN110697477B (en) | Deviation-rectifying embossing rewinding machine for aluminum foil paper production | |
| CN209133634U (en) | Battery roll core rubberizing device | |
| CN208127043U (en) | A kind of winding device | |
| CN117214491B (en) | Frequency converter current detection device and detection method | |
| CN210103028U (en) | Novel full-film winding machine | |
| CN214152985U (en) | Battery cell winding device and battery cell winding equipment | |
| CN220925777U (en) | Film laminating device for laboratory electricity buckling | |
| CN219906341U (en) | A connect area structure and evaporation plating lithium supplementing all-in-one for mending lithium | |
| CN220078074U (en) | Lithium belt deviation rectifying and unreeling structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20221014 |
|
| WW01 | Invention patent application withdrawn after publication |