CN220961790U - Buckling performance testing device of lithium ion battery - Google Patents
Buckling performance testing device of lithium ion battery Download PDFInfo
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- CN220961790U CN220961790U CN202322713354.8U CN202322713354U CN220961790U CN 220961790 U CN220961790 U CN 220961790U CN 202322713354 U CN202322713354 U CN 202322713354U CN 220961790 U CN220961790 U CN 220961790U
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- 238000012360 testing method Methods 0.000 title claims abstract description 100
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 42
- 238000003825 pressing Methods 0.000 claims description 67
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229920001342 Bakelite® Polymers 0.000 claims description 5
- 239000004637 bakelite Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000006183 anode active material Substances 0.000 abstract description 5
- 239000006182 cathode active material Substances 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 230000005856 abnormality Effects 0.000 abstract description 3
- 239000007773 negative electrode material Substances 0.000 description 19
- 239000007774 positive electrode material Substances 0.000 description 19
- 230000005611 electricity Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 101150097977 arch-1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Abstract
The utility model belongs to a device for testing the buckling performance of a lithium ion battery in the technical field of lithium ion batteries. Negative electrode collection terminal auxiliary plate (6) one side surface sets up negative electrode collection line groove (8), and negative electrode collection terminal clamp plate (18) one side surface sets up negative electrode contact arch (9), and positive electrode collection terminal auxiliary plate (2) one side surface sets up positive electrode collection line groove (4), and positive electrode collection terminal clamp plate (19) one side surface sets up positive electrode contact arch (1). The device for testing the electrical property of the lithium ion battery can be conveniently and reliably used for testing the electrical properties of the primary charge and discharge specific capacity and the primary charge and discharge energy efficiency of the raw materials of the anode and cathode active materials of the lithium ion battery, enlarges the contact area during the test of the button battery, ensures the stability of test current, eliminates the problem of abnormal results of the electrical property test of the raw materials of the anode and cathode active materials caused by the abnormality of the device, and improves the accuracy of the results.
Description
Technical Field
The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a device for testing the buckling performance of a lithium ion battery.
Background
The positive and negative electrode active material are the two most important main materials of four main materials of the lithium battery, and in the design of the lithium battery, the first charge and discharge specific capacity and the first charge and discharge energy efficiency of the positive and negative electrode active material are important electrical performance indexes for determining the material selection application of the positive and negative electrode active material of the lithium battery, and are important basis for building a positive and negative system of the lithium battery; important references for determining the outline dimension, the service life, the application scene qualitative and the like of the lithium battery are provided; how to obtain accurate specific capacity and efficiency of primary charge and discharge of the positive and negative electrode active materials is a problem that lithium battery manufacturers and positive and negative electrode active material manufacturers attach importance to each other, so that the accuracy of testing the electrical performance data of the positive and negative electrode active materials is required to be achieved by improving a testing method, testing equipment and a testing tool continuously. In the prior art, after the buckling (half-cell) of the positive and negative electrode active material is manufactured, when the specific capacity of the first charge and discharge and the efficiency of the first charge and discharge are tested, the clamp type and press clamp type contact type test equipment directly influences the electrical property test result of the positive and negative electrode active material because the surface of the contact buckling cell is not fastened in the test buckling process, the stability of the test current is influenced, the test current is smaller, and the current in the test process is unstable; in addition, the test equipment has long service time, causes loosening and poor contact, causes abnormal buckling test and inaccurate data, and cannot accurately judge the specific capacity and efficiency of the first charge and discharge of the material. In the prior art, a clamp type and press clamp type auxiliary test tool is adopted for buckling electricity (buckling battery), and the defects are that the contact test surface area is smaller, so that the impedance of the contact tool and the testing buckling battery is increased, the fixed current value is lost in the test process, the fixed test current is directly and stealthyly tampered, the capacity and voltage of the same positive and negative electrode active material test battery form a numerical curve with the operation of the buckling battery in the test time, the consistency of variables is uneven, so that the electric performance test results of the positive and negative electrode active material differ greatly every time, the first charge and discharge specific capacities, the first charge and discharge energy efficiency are inconsistent, and the standard alignment of the electric performance of the positive and negative electrode active material using method and the manufacturing method is difficult; and each positive and negative electrode active material is repeatedly manufactured and tested, so that the experimental workload, the experimental time and the cost of the materials are increased.
In the prior art, there is a technology named as a lithium ion button cell testing device and a publication number of CN202196157U, and the technology relates to a lithium ion button cell testing device. The utility model belongs to the technical field of lithium ion battery detection. A lithium ion button cell testing device is characterized in that: the testing device comprises an upper module, a sealing gasket, a compression spring and a lower module; the upper module and the lower module are assembled oppositely, a sealing gasket is arranged between the upper module and the lower module, and a conductor is arranged in the middle of the upper module to be connected with a compression spring for compressing the lithium ion button cell. The utility model has the advantages of simple structure, convenient assembly of button cell, no need of special equipment such as sealing machine and punching machine, convenient operation, high reliability, excellent performance, etc.
However, this technique does not relate to the technical problem and technical solution of the present application.
Disclosure of utility model
The technical problems to be solved by the utility model are as follows: aiming at the defects of the prior art, the electric property testing device for the lithium ion battery is simple in structure, can be conveniently and reliably used for testing the electric property of the first charge and discharge specific capacity and the first charge and discharge energy efficiency of the raw materials of the positive and negative electrode active materials of the lithium ion battery, enlarges the contact area during the test of the button battery, ensures the stability of the test current, eliminates the problem of abnormal test results of the electric property of the raw materials of the positive and negative electrode active materials caused by the abnormality of the device, and improves the accuracy of the test results.
The technical scheme adopted by the utility model is as follows:
The utility model relates to a device for testing the buckling performance of a lithium ion battery, wherein an integral negative electrode collecting end comprises a negative electrode collecting end auxiliary plate and a negative electrode collecting end pressing plate, a negative electrode collecting line groove is formed in one side surface of the negative electrode collecting end auxiliary plate, a negative electrode contact protrusion is formed in one side surface of the negative electrode collecting end pressing plate, an integral positive electrode collecting end comprises a positive electrode collecting end auxiliary plate and a positive electrode collecting end pressing plate, a positive electrode collecting line groove is formed in one side surface of the positive electrode collecting end auxiliary plate, and a positive electrode contact protrusion is formed in one side surface of the positive electrode collecting end pressing plate.
The negative electrode collecting line slot comprises a plurality of buckling placing positions, the negative electrode collecting end auxiliary plate and the negative electrode collecting end pressing plate are arranged to be connected in a structure, and when the negative electrode collecting end auxiliary plate is connected with the negative electrode collecting end pressing plate, each buckling placing position is arranged to be correspondingly communicated with a negative electrode contact protrusion structure.
The positive electrode collection line groove include a plurality of collection end positions, positive electrode collection end subplate and positive electrode collection end clamp plate set up to the structure that can connect, when positive electrode collection end subplate and positive electrode collection end clamp plate are connected, every collection end position sets up to the structure that can correspond a intercommunication positive electrode contact arch.
The other side surface of the negative electrode collecting end pressing plate is provided with connecting convex springs, and each negative electrode contact convex is arranged in a structure with opposite positions.
The positive electrode collection end auxiliary plate side set up the location screw, the buckle includes connecting portion and clamping part, connecting portion and clamping part set up to be L type structure.
The surface of the negative electrode collecting end pressing plate is provided with a plurality of position adjusting blocks, and each position adjusting block is provided with a connecting convex spring.
The negative electrode collecting end auxiliary plate and the negative electrode collecting end pressing plate are respectively provided with screw holes, and the negative electrode collecting end auxiliary plate and the negative electrode collecting end pressing plate are arranged to be capable of being connected through screw screwing penetrating through the screw holes.
The positive collecting end auxiliary plate and the positive collecting end pressing plate are respectively provided with screw holes, and the positive collecting end auxiliary plate and the positive collecting end pressing plate are arranged to be capable of being connected through screw screwing penetrating the screw holes.
The structure that can link together is set up to whole negative pole collection end and whole positive pole collection end, and when whole negative pole collection end and whole positive pole collection end were connected together, negative pole collection end clamp plate set up to the structure that can laminate positive pole collection end clamp plate arrangement, every negative pole contact is protruding to set up to can correspond to laminate a positive pole contact bellied structure.
The side surface of the negative electrode collecting end auxiliary plate is movably connected with the side surface of the positive electrode collecting end auxiliary plate through a hinge; the negative electrode collecting end auxiliary plate, the negative electrode collecting end pressing plate and the positive electrode collecting end auxiliary plate are made of bakelite plates.
By adopting the technical scheme of the utility model, the working principle and the beneficial effects are as follows:
According to the device for testing the buckling performance of the lithium ion battery, provided by the utility model, the concave positive electrode collecting line groove is processed on the surface of one side of the auxiliary plate of the positive electrode collecting end, and the auxiliary plate of the positive electrode collecting end and the pressing plate of the positive electrode collecting end of the whole positive electrode collecting end can be combined into an integrated structure through screws, so that the assembly of the whole positive electrode collecting end is completed. The positive electrode collecting wire groove is correspondingly communicated with the positive electrode contact protrusion, and the positive electrode contact protrusion can be a raised copper round piece. Processing concave negative pole collection line groove on negative pole collection end subplate, negative pole collection end subplate and negative pole collection end clamp plate of whole negative pole collection end can be through screw combination structure as an organic whole, accomplishes the equipment of whole negative pole collection end, and negative pole collection line groove corresponds the intercommunication negative pole contact arch, and the negative pole contact arch can be bellied copper circular plate. The buckling position of the buckling position corresponding to the buckling position in the negative electrode collecting line groove is required to be tested, and after the negative electrode collecting end auxiliary plate and the negative electrode collecting end pressing plate are combined, the buckling position is fixedly placed. And collection line is arranged at the collection end position in the positive collection line slot on one side surface of the auxiliary plate of the positive collection end, and after the auxiliary plate of the positive collection end and the pressing plate of the positive collection end are combined, reliable fixation of the collection line is realized. And when testing, the integral negative electrode collecting end and the integral positive electrode collecting end are buckled together, so that performance testing is facilitated. According to the device for testing the buckling performance of the lithium ion battery, disclosed by the utility model, the contact area of buckling (buckling battery) is better than that of a clamp type and a pressing clamp type, so that buckling stable contact is realized, the impedance of the contact surface between a testing tool and a testing buckling can be eliminated, and the stability of a testing current is ensured; the device can not have the bad phenomena of looseness, bad contact and the like when being used for a long time, the testing current loss is stopped, the testing current is indirectly tampered, and finally, the data accuracy of the first charge and discharge specific capacity and the first charge and discharge energy efficiency of the positive and negative electrode active material (buckling electricity) can be ensured; the experimental quality of the anode and cathode active material materials is improved, and the workload of experimental staff is reduced.
Drawings
The following is a brief description of what is expressed in the drawings of this specification and the references in the drawings:
Fig. 1 is a schematic structural diagram of a device for testing the buckling performance of a lithium ion battery according to the present utility model;
fig. 2 is an exploded view of the device for testing the electrical property of the lithium ion battery according to the present utility model;
fig. 3 is a schematic structural diagram of an overall positive electrode collection end of the device for testing the buckling performance of a lithium ion battery according to the present utility model;
Fig. 4 is a schematic structural diagram of a negative electrode collecting terminal auxiliary plate of the device for testing the buckling performance of the lithium ion battery;
fig. 5 is a schematic structural diagram of one side of a negative electrode collecting end pressing plate of the device for testing the buckling performance of a lithium ion battery according to the present utility model;
fig. 6 is a schematic structural diagram of the other side of the negative electrode collecting end pressing plate of the device for testing the buckling performance of the lithium ion battery;
The reference numerals are: 1. a positive electrode contact protrusion; 2. an anode acquisition end auxiliary plate; 3. a screw hole; 4. the positive electrode collects the line groove; 6. a negative electrode acquisition end auxiliary plate; 8. a negative electrode collecting wire groove; 9. a negative electrode contact protrusion; 10. a connecting projection spring; 11. a position adjusting block; 12. an integral negative electrode acquisition end; 13. an integral positive electrode acquisition end; 14. positioning screw holes; 15. a hinge; 16. a buckle; 17. a polarity identification; 18. a negative electrode collecting end pressing plate; 19. a positive electrode collecting end pressing plate; 20. a power-off setting bit; 21. collecting end positions; 22. a connection part; 23. and a pressing part.
Detailed Description
The following describes the shape, structure, mutual position and connection relation between parts, action of parts and working principle of the specific embodiment of the present utility model by describing examples in further detail:
As shown in fig. 1-6, the utility model provides a device for testing the buckling performance of a lithium ion battery, wherein an integral negative electrode collecting end 12 comprises a negative electrode collecting end auxiliary plate 6 and a negative electrode collecting end pressing plate 18, a negative electrode collecting line slot 8 is arranged on one side surface of the negative electrode collecting end auxiliary plate 6, a negative electrode contact bulge 9 is arranged on one side surface of the negative electrode collecting end pressing plate 18, an integral positive electrode collecting end 13 comprises a positive electrode collecting end auxiliary plate 2 and a positive electrode collecting end pressing plate 19, a positive electrode collecting line slot 4 is arranged on one side surface of the positive electrode collecting end auxiliary plate 2, and a positive electrode contact bulge 1 is arranged on one side surface of the positive electrode collecting end pressing plate 19. The structure provides an improved technical scheme aiming at the defects in the prior art. The concave positive electrode collecting line slot 4 is processed on one side surface of the positive electrode collecting end auxiliary plate 2, and the positive electrode collecting end auxiliary plate 2 and the positive electrode collecting end pressing plate 19 of the integral positive electrode collecting end 13 can be combined into an integral structure through screws, so that the integral positive electrode collecting end 13 is assembled. The positive electrode collecting wire groove 4 is correspondingly communicated with the positive electrode contact protrusion 1, and the positive electrode contact protrusion 1 can be a raised copper round piece. The concave negative electrode collecting line groove 8 is processed on the negative electrode collecting end auxiliary plate 6, the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 of the integral negative electrode collecting end 12 can be combined into an integral structure through screws, the integral negative electrode collecting end 12 is assembled, the negative electrode collecting line groove 8 is correspondingly communicated with the negative electrode contact protrusion 9, and the negative electrode contact protrusion 9 can be a convex copper round piece. The buckling electricity to be tested is placed in the corresponding buckling electricity placing position in the negative electrode collecting line slot 8, and after the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 are combined, the buckling electricity is fixedly placed. And collection line is arranged to collection end position in the positive collection line slot 4 of anodal collection end subplate 2 one side surface, and after anodal collection end subplate 2 and anodal collection end clamp plate 19 combination, the reliable fixed of realization collection line. And when testing, the integral negative electrode collecting end 12 and the integral positive electrode collecting end 13 are buckled together, so that performance testing is facilitated. According to the device for testing the buckling performance of the lithium ion battery, disclosed by the utility model, the contact area of buckling (buckling battery) is better than that of a clamp type and a pressing clamp type, so that buckling stable contact is realized, the impedance of the contact surface between a testing tool and a testing buckling can be eliminated, and the stability of a testing current is ensured; the device can not have the bad phenomena of loosening, bad contact and the like when being used for a long time, the testing current loss is stopped, the testing current is indirectly tampered, and finally, the data accuracy of the first charge and discharge specific capacity and the first charge and discharge energy efficiency of the positive and negative electrode active material can be ensured; the experimental quality of the anode and cathode active material materials is improved, and the workload of experimental staff is reduced. The device for testing the electrical property of the lithium ion battery has a simple structure, can be conveniently and reliably used for testing the electrical properties of the primary charge and discharge specific capacity and the primary charge and discharge energy efficiency of the raw materials of the positive electrode active material and the negative electrode active material of the lithium ion battery, enlarges the contact area during the test of the button battery, ensures the stability of test current, eliminates the problem of abnormal test results of the electrical properties of the raw materials of the positive electrode active material and the negative electrode active material caused by the abnormality of the device, and improves the accuracy of the test results.
The negative electrode collecting line slot 8 comprises a plurality of buckling placing positions 20, the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 are arranged to be connected, and when the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 are connected, each buckling placing position 20 is arranged to be correspondingly communicated with a negative electrode contact protrusion 9. The structure is characterized in that the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 are fixedly connected to realize structural combination for placing and fixing of electricity.
The positive electrode collection line groove 4 include a plurality of collection end positions 21, positive electrode collection end subplate 2 and positive electrode collection end clamp plate 19 set up to the structure that can connect, when positive electrode collection end subplate 2 and positive electrode collection end clamp plate 19 connect, every collection end position 21 sets up to the structure that can correspond a intercommunication positive electrode contact arch 1. Above-mentioned structure, anodal collection end subplate 2 and anodal collection end clamp plate 19 fixed connection realize the structure combination for the placing and the fixed of collection line.
The other side surface of the negative electrode collecting end pressing plate 18 is provided with connecting convex springs 10, and each connecting convex spring is arranged in a structure opposite to one negative electrode contact convex 9. The surface of the negative electrode collecting end pressing plate 18 is provided with a plurality of position adjusting blocks 11, and each position adjusting block 11 is provided with a connecting convex spring 10. Above-mentioned structure, for adapting to the different button cell tests of thickness, set up and connect protruding spring 10, after detaining the electricity and place, connect protruding spring 10 can reliably realize stretching out and drawing back, possess the free flexible space, reliably exert force and detain the electric surface, realize detaining the electric location. The adjusting block 11 is screwed and connected, so that the adjusting position can be rotated, the position adjusting range of the connecting convex spring 10 can be enlarged when the adjusting position is adjusted, and the positioning requirements of buckling electricity with different thicknesses are met.
The side of the auxiliary plate 2 of the positive electrode collecting end is provided with a positioning screw hole 14, the buckle 16 comprises a connecting part 22 and a pressing part 23, and the connecting part 22 and the pressing part 23 are of an L-shaped structure. Above-mentioned structure, buckle 16 is used for fixed connection whole negative pole collection end 12 and whole positive pole collection end 13, realizes the fixed of one side behind the laminating of both, prevents both free separation, the test of being convenient for.
The negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 are respectively provided with screw holes 3, and the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 are arranged to be capable of being connected through screws penetrating through the screw holes 3. By the structure, the screws can reliably fix the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18, so that the negative electrode collecting end auxiliary plate and the negative electrode collecting end pressing plate are fixedly combined, and the negative electrode collecting end auxiliary plate and the negative electrode collecting end pressing plate cannot be separated.
The positive collecting end auxiliary plate 2 and the positive collecting end pressing plate 19 are respectively provided with screw holes 3, and the positive collecting end auxiliary plate 2 and the positive collecting end pressing plate 19 are arranged to be capable of being connected through screws penetrating through the screw holes 3. By the structure, the screws can reliably fix the auxiliary plate 2 at the positive collecting end and the pressing plate 19 at the positive collecting end, so that the fixed combination of the auxiliary plate 2 at the positive collecting end and the pressing plate is realized, and the auxiliary plate and the pressing plate are not separated.
The integral negative electrode collecting end 12 and the integral positive electrode collecting end 13 are arranged to be capable of being connected together, when the integral negative electrode collecting end 12 and the integral positive electrode collecting end 13 are connected together, the negative electrode collecting end pressing plate 18 is arranged to be capable of being attached to the positive electrode collecting end pressing plate 19, and each negative electrode contact protrusion 9 is arranged to be capable of being correspondingly attached to the positive electrode contact protrusion 1. With the structure, when the device for testing the buckling performance of the lithium ion battery is used, the whole negative electrode collection end 12 and the whole positive electrode collection end 13 are required to be fixedly combined and connected together.
The side surface of the negative electrode collecting end auxiliary plate 6 is movably connected with the side surface of the positive electrode collecting end auxiliary plate 2 through a hinge 15; above-mentioned structure, hinge swing joint negative pole collection end subplate 6 one side and anodal collection end subplate 2 one side realize that whole negative pole collection end 12 and whole anodal collection end 13 can realize the upset, and buckle 16 realizes the connection of whole negative pole collection end 12 and whole anodal collection end 13 from the opposite side, realizes the fixed of whole testing arrangement structure.
The negative electrode collecting end auxiliary plate 6, the negative electrode collecting end pressing plate 18, the positive electrode collecting end auxiliary plate 2 and the positive electrode collecting end pressing plate 19 are made of bakelite plates. Above-mentioned structure, test device's part chooses for use easy processing and the bakelite board that thickness size is suitable, can reach that the device is durable, anticorrosive, light, anticreep, electromagnetic diffusion prevention effect to promote the performance of whole device. And the polarity mark 17 is marked and used for reminding a tester and preventing the tester from reversely assembling the battery.
According to the device for testing the buckling performance of the lithium ion battery, after the integral negative electrode acquisition end 12 and the integral positive electrode acquisition end 13 are combined, reliable contact of relevant parts is ensured, test conductivity is ensured, the contact area of charging and discharging buckling is enlarged, the impedance of the buckling contacting with the testing device is eliminated, and consistency of charging and discharging current and test required current is ensured. Structurally, the integral negative electrode collecting end 12 comprises a negative electrode collecting end auxiliary plate 6 and a negative electrode collecting end pressing plate 18, the integral positive electrode collecting end 13 comprises a positive electrode collecting end auxiliary plate 2 and a positive electrode collecting end pressing plate 19, the corresponding wire slots are reliably fixed, a plurality of electricity buckling performance tests can be simultaneously carried out, the wire slots correspond to the contact protrusions one by one, and the circuit sequence is ensured to be accurate. One side of the integral negative electrode collection end 12 and one side of the integral positive electrode collection end 13 are movably connected through a hinge, and the other side is fixed through a buckle, so that the fixation and separation are conveniently realized. In order to adapt to button cells with different thicknesses, the connecting convex spring 10 and the position adjusting block 11 are adopted to achieve the fixed tightness of button electric contact with different thicknesses, eliminate the movable space of the button electric test position and avoid the contact impedance caused by different contact fastening force channels. All parts of the testing device are made of bakelite plates, so that the testing device has the functions of durability, corrosion resistance, portability, electric leakage resistance and electromagnetic radiation diffusion resistance. Thus, the performance of the device can be effectively improved.
According to the device for testing the buckling performance of the lithium ion battery, provided by the utility model, the recessed positive electrode collecting wire slot 4 is processed on the surface of one side of the auxiliary plate 2 of the positive electrode collecting end, the auxiliary plate 2 of the positive electrode collecting end 13 and the pressing plate 19 of the positive electrode collecting end are combined into an integrated structure through screws, and the assembly of the whole positive electrode collecting end 13 is completed. The positive electrode collecting wire groove 4 is correspondingly communicated with the positive electrode contact protrusion 1, and the positive electrode contact protrusion 1 can be a raised copper round piece. The concave negative electrode collecting line groove 8 is processed on the negative electrode collecting end auxiliary plate 6, the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 of the integral negative electrode collecting end 12 can be combined into an integral structure through screws, the integral negative electrode collecting end 12 is assembled, the negative electrode collecting line groove 8 is correspondingly communicated with the negative electrode contact protrusion 9, and the negative electrode contact protrusion 9 can be a convex copper round piece. The buckling electricity to be tested is placed in the corresponding buckling electricity placing position in the negative electrode collecting line slot 8, and after the negative electrode collecting end auxiliary plate 6 and the negative electrode collecting end pressing plate 18 are combined, the buckling electricity is fixedly placed. And collection line is arranged to collection end position in the positive collection line slot 4 of anodal collection end subplate 2 one side surface, and after anodal collection end subplate 2 and anodal collection end clamp plate 19 combination, the reliable fixed of realization collection line. And when testing, the integral negative electrode collecting end 12 and the integral positive electrode collecting end 13 are buckled together, so that performance testing is facilitated. According to the device for testing the buckling performance of the lithium ion battery, disclosed by the utility model, the contact area of buckling (buckling battery) is better than that of a clamp type and a pressing clamp type, so that buckling stable contact is realized, the impedance of the contact surface between a testing tool and a testing buckling can be eliminated, and the stability of a testing current is ensured; the device can not have the bad phenomena of loosening, bad contact and the like when being used for a long time, the testing current loss is stopped, the testing current is indirectly tampered, and finally, the data accuracy of the first charge and discharge specific capacity and the first charge and discharge energy efficiency of the positive and negative electrode active material can be ensured; the experimental quality of the anode and cathode active material materials is improved, and the workload of experimental staff is reduced.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the specific implementation of the utility model is not limited by the foregoing, but rather is within the scope of the utility model as long as various modifications are made by the method concept and technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without modification.
Claims (10)
1. The utility model provides a knot electrical property testing arrangement of lithium ion battery which characterized in that: the whole negative pole collection end (12) is including negative pole collection end subplate (6) and negative pole collection end clamp plate (18), and negative pole collection end subplate (6) one side surface sets up negative pole collection line groove (8), and negative pole collection end clamp plate (18) one side surface sets up negative pole contact protrusion (9), and whole positive pole collection end (13) are including positive pole collection end subplate (2) and positive pole collection end clamp plate (19), and positive pole collection end subplate (2) one side surface sets up positive pole collection line groove (4), and positive pole collection end clamp plate (19) one side surface sets up positive pole contact protrusion (1).
2. The electrical property testing device of a lithium ion battery according to claim 1, wherein: the negative electrode collecting line groove (8) comprises a plurality of buckling placing positions (20), the negative electrode collecting end auxiliary plate (6) and the negative electrode collecting end pressing plate (18) are arranged to be connected in a structure, and when the negative electrode collecting end auxiliary plate (6) and the negative electrode collecting end pressing plate (18) are connected, each buckling placing position (20) is arranged to be correspondingly communicated with a structure of a negative electrode contact protrusion (9).
3. The electrical property testing apparatus of a lithium ion battery according to claim 1 or 2, wherein: the positive electrode collection line groove (4) include a plurality of collection end positions (21), positive electrode collection end subplate (2) and positive electrode collection end clamp plate (19) set up to the structure that can connect, when positive electrode collection end subplate (2) and positive electrode collection end clamp plate (19) are connected, every collection end position (21) set up to the structure that can correspond a intercommunication positive electrode contact arch (1).
4. The electrical property testing apparatus of a lithium ion battery according to claim 1 or 2, wherein: the other side surface of the negative electrode collecting end pressing plate (18) is provided with connecting convex springs (10), and each negative electrode contact convex (9) is arranged in a structure with opposite positions.
5. The electrical property testing apparatus of a lithium ion battery according to claim 1 or 2, wherein: the positive electrode collection end auxiliary plate (2) side set up location screw (14), buckle (16) are including connecting portion (22) and clamping part (23), connecting portion (22) and clamping part (23) set up to be L type structure.
6. The device for testing the electrical property of a lithium ion battery according to claim 4, wherein: the surface of the negative electrode collecting end pressing plate (18) is provided with a plurality of position adjusting blocks (11), and each position adjusting block (11) is provided with a connecting convex spring (10).
7. The electrical property testing device of a lithium ion battery according to claim 2, wherein: the negative electrode collecting end auxiliary plate (6) and the negative electrode collecting end pressing plate (18) are respectively provided with screw holes (3), and the negative electrode collecting end auxiliary plate (6) and the negative electrode collecting end pressing plate (18) are arranged to be capable of being connected through screw bolts penetrating through the screw holes (3).
8. The electrical property testing device for lithium ion battery according to claim 3, wherein: the positive electrode collecting end auxiliary plate (2) and the positive electrode collecting end pressing plate (19) are respectively provided with screw holes (3), and the positive electrode collecting end auxiliary plate (2) and the positive electrode collecting end pressing plate (19) are arranged to be capable of being connected through screw screwing penetrating through the screw holes (3).
9. The electrical property testing apparatus of a lithium ion battery according to claim 1 or 2, wherein: the structure that can link together is set up to whole negative pole collection end (12) and whole positive pole collection end (13), and when whole negative pole collection end (12) and whole positive pole collection end (13) link together, negative pole collection end clamp plate (18) set up to the structure that can laminate positive pole collection end clamp plate (19) to arrange, every negative pole contact protruding (9) set up to can correspond the structure of laminating a positive pole contact protruding (1).
10. The electrical property testing device of lithium ion battery according to claim 5, wherein: the side surface of the negative electrode collecting end auxiliary plate (6) is movably connected with the side surface of the positive electrode collecting end auxiliary plate (2) through a hinge (15); the negative electrode collecting end auxiliary plate (6), the negative electrode collecting end pressing plate (18), the positive electrode collecting end auxiliary plate (2) and the positive electrode collecting end pressing plate (19) are made of bakelite plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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