CN219915792U

CN219915792U - Testing device for heat conductivity coefficient of battery

Info

Publication number: CN219915792U
Application number: CN202320926180.0U
Authority: CN
Inventors: 张传金; 刘孜荣; 徐�明; 潘飞
Original assignee: Xinsuwanghua Measurement And Control Technology Suzhou Co ltd
Current assignee: Xinsuwanghua Measurement And Control Technology Suzhou Co ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-10-27
Anticipated expiration: 2033-04-23

Abstract

The utility model provides a testing device for battery heat conductivity coefficient, which relates to the technical field of battery heat conductivity testing and comprises a workbench and clamping pieces, wherein the clamping pieces are arranged on the workbench, the clamping pieces comprise screw rods, clamping plates and driving mechanisms, the screw rods are rotatably arranged on the workbench, threads which are reversely arranged are arranged at two ends of the screw rods, the clamping plates are symmetrically arranged on the workbench, a detection groove is arranged on one clamping plate, the screw rods are arranged in a driving mode through the driving mechanisms, a pushing mechanism is arranged on the workbench between the two clamping plates, and a thermophysical analyzer is arranged on the workbench. According to the utility model, the stability of the battery in the testing process is effectively increased through the cooperation of the clamping piece and the pushing mechanism, and meanwhile, the automatic discharging operation is convenient.

Description

Testing device for heat conductivity coefficient of battery

Technical Field

The utility model relates to the technical field of battery heat conduction testing, in particular to a testing device for battery heat conduction coefficients.

Background

As an important force for driving energy revolution, a lithium ion battery rapidly becomes a main energy storage medium of an electric automobile, portable electronic equipment and the like due to the unique advantages of the lithium ion battery, however, the further development of the lithium ion battery still faces multiple challenges, besides basic cost and other economic factors, the thermal safety is one of the problems that the lithium ion battery is saturated and difficult, in the system integrated development process of the power battery, the thermal management and the safety protection of the battery are the design cores of the battery, and an excellent thermal management system is designed without the simulation and analysis of simulation software, and the precondition of accurate simulation is that accurate battery thermal physical parameters including the density, specific heat capacity, contact thermal resistance, thermal conductivity coefficient (or thermal diffusion coefficient) and the like of the battery can be input, wherein the thermal conductivity is one of the most important thermal physical parameters.

For the thermal conductivity of hard shell batteries, the industry currently uses empirical values or principle models for estimation. The thermal conductivity of the soft-packed battery can be tested by a steady-state method or an unsteady-state method, wherein the thermal conductivity test is to peel off the electrode in the battery to expose the electrode outside, and the thermal conductivity of the electrode is analyzed by a thermal physical analyzer.

Optimizing for a traditional testing device of battery heat conductivity coefficient: traditional battery coefficient of heat conductivity's testing arrangement is to not carrying out effectual fixed when detecting great lithium cell, especially to great lithium cell of car trade, in case take place unexpected collision at the testing process, can lead to the lithium cell to take place the slope, thereby lead to the battery to be connected with detection device and cause unstable, thereby influence the testing result, and after detecting, need the staff to cancel the battery and transfer from the detection bench after dismantling, need add and establish extra power device and drive, this is comparatively high to the manufacturing cost as the workstation that provides the detection centre gripping to the lithium cell, therefore need a battery coefficient of heat conductivity's testing arrangement to solve this kind of problem.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, after a battery is detected, a worker is required to cancel and detach the battery and then transfer the battery from a detection table, and an additional power device is required to be additionally arranged for driving, so that the manufacturing cost is high for the workbench for providing detection clamping for a lithium battery.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: including workstation and holder, the holder sets up on the workstation, the holder includes lead screw, splint and actuating mechanism, the lead screw rotates and sets up on the workstation, the both ends of lead screw are equipped with the screw thread that reverse set up, splint are equipped with two and symmetry setting and are in on the workstation, one be equipped with the detection groove on the splint, the lead screw passes through actuating mechanism drive setting, two be equipped with pushing mechanism on the workstation between the splint, be equipped with thermophysical analyzer on the workstation.

As a preferred implementation mode, the driving mechanism comprises a rotating shaft and a motor, the motor is arranged below the workbench, the rotating shaft is in linkage with the output end of the motor, the rotating shaft is parallel to the screw rod, one end of the rotating shaft is in linkage with the screw rod through a belt, the motor is driven to drive the rotating shaft to rotate, and the screw rod is driven to rotate through the belt, so that two clamping plates are reversely moved.

As a preferred implementation mode, the pushing mechanism comprises a pushing plate and a supporting plate, a sliding groove is formed in the center of the workbench, the supporting plate is arranged on the sliding groove in a sliding mode, the pushing plate is vertically arranged above the rear of the supporting plate, and after a battery falls on the supporting plate, the pushing plate is driven to drive the supporting plate to slide on the sliding groove so as to push away the battery.

As a preferred implementation mode, be located spout central point department be equipped with the bar on the workstation and lead to the groove, the bar leads to the inslot and wears to be equipped with the connecting rod perpendicularly, the upper end of connecting rod with backup pad assembly connection, the lower extreme of connecting rod is equipped with the pinion rack perpendicularly, be equipped with the gear in the pivot, the gear sets up with the pinion rack meshing, rotates through the pivot, can drive the gear rotation, and then drives and carry out back-and-forth movement with the pinion rack that the gear meshing set up, realizes driving the backup pad.

As a preferred implementation mode, be equipped with the axle groove in the pivot, the gear sets up the axle inslot, axle groove length is for the twice of gear length, be equipped with spacing on the axle groove, the gear inboard be equipped with spacing card fit's spacing groove, the pinion rack with the gear is isometric just be located just above an axle groove one end, when needing to drive the backup pad, the accessible removes the pinion to the pinion rack under for pinion rack and gear engagement, if not to the backup pad drive time, the accessible removes the other end to the axle groove to the gear for pinion rack and gear separation, when the pivot drives the lead screw and rotates, can not drive the pinion rack and remove, can drive the ejector pad when separating the splint during the unloading, realizes synchronous unloading.

As a preferred implementation mode, the inner side surface of the clamping plate is provided with an anti-slip layer, and the anti-slip layer is provided with anti-slip patterns, so that the clamping stability of the clamping plate is effectively ensured through the arranged anti-slip layer.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. according to the utility model, the driving mechanism is driven to drive the screw rod to rotate, so that the two clamping plates on the screw rod are driven to move in opposite directions, the battery is clamped, the electrode stripped from the battery can pass through the detection groove to be connected with the thermal property analyzer, the thermal property analyzer detects and analyzes the thermal conductivity coefficient of the electrode, after detection, the two clamping plates are separated by reversely rotating the screw rod, the battery is stably dropped on the workbench, and the battery is pushed out between the two clamping plates by the driving of the pushing mechanism, so that the discharging operation is realized, the stability of the battery in the test process is effectively increased, the automatic discharging operation is realized, and the labor force of workers for carrying the large battery is saved.

2. According to the utility model, when the supporting plate is required to be driven, the toothed plate can be meshed with the gear by moving the gear right below the toothed plate, if the supporting plate is not driven, the toothed plate can be separated from the gear by moving the gear to the other end of the shaft groove, when the rotating shaft drives the screw rod to rotate, the toothed plate can not be driven to move, and when the clamping plate is discharged, the pushing plate can be driven while the clamping plate is separated, so that synchronous discharging is realized.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a schematic diagram illustrating the assembly of the clamping member and the pushing mechanism according to the present utility model;

FIG. 3 is a bottom view of the present utility model;

fig. 4 is an enlarged schematic view of the structure a in fig. 3 according to the present utility model.

Legend description:

1. a work table; 2. a screw rod; 3. a clamping plate; 4. a detection groove; 5. a thermophysical analyzer; 6. a rotating shaft; 7. a motor; 8. a belt; 9. a push plate; 10. a support plate; 11. a chute; 12. a strip-shaped through groove; 13. a connecting rod; 14. a toothed plate; 15. a gear; 16. a shaft groove; 17. a limit bar; 18. a limit groove; 19. an anti-slip layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: including workstation 1 and holder, the holder sets up on workstation 1, and the holder includes lead screw 2, splint 3 and actuating mechanism, and lead screw 2 rotates to set up on workstation 1, and the both ends of lead screw 2 are equipped with the screw thread that reverse set up, and splint 3 are equipped with two and symmetry setting on workstation 1, are equipped with detection groove 4 on one splint 3, and lead screw 2 passes through actuating mechanism drive setting, is equipped with pushing mechanism on workstation 1 between two splint 3, is equipped with thermophysical analyzer 5 on the workstation 1.

Referring to fig. 1-4, the driving mechanism includes a rotating shaft 6 and a motor 7, the motor 7 is disposed below the workbench 1, the rotating shaft 6 is disposed at an output end of the motor 7 in a linkage manner, the rotating shaft 6 is disposed parallel to the screw rod 2, one end of the rotating shaft 6 is disposed in a linkage manner with the screw rod 2 through a belt 8, the motor 7 is driven to drive the rotating shaft 6 to rotate, and the screw rod 2 is driven to rotate through the belt 8, so that the two clamping plates 3 are reversely moved.

Referring to fig. 1-4, the pushing mechanism includes a pushing plate 9 and a supporting plate 10, a chute 11 is disposed at the center of the workbench 1, the supporting plate 10 is slidably disposed on the chute 11, the pushing plate 9 is vertically disposed above the rear of the supporting plate 10, when a battery falls on the supporting plate 10, the pushing plate 9 is driven to drive the supporting plate 10 to slide on the chute 11, and the battery is pushed away, so that the labor force of the staff for carrying the larger battery is saved.

Referring to fig. 1-4, a bar-shaped through groove 12 is arranged on a workbench 1 positioned at the center of a chute 11, a connecting rod 13 vertically penetrates through the bar-shaped through groove 12, the upper end of the connecting rod 13 is connected with a supporting plate 10 in an assembling manner, a toothed plate 14 is vertically arranged at the lower end of the connecting rod 13, a gear 15 is arranged on a rotating shaft 6, the gear 15 is meshed with the toothed plate 14, the rotating shaft 6 rotates to drive the gear 15 to rotate, and then the toothed plate 14 meshed with the gear 15 is driven to move back and forth, so that the supporting plate 10 is driven.

Referring to fig. 1-4, a shaft groove 16 is formed in a rotating shaft 6, a gear 15 is arranged in the shaft groove 16, the length of the shaft groove 16 is twice that of the gear 15, a limit bar 17 is arranged on the shaft groove 16, a limit groove 18 which is matched with the limit bar 17 in a clamping manner is formed in the inner side of the gear 15, a toothed plate 14 is equal in length with the gear 15 and is located right above one end of the shaft groove 16, when the supporting plate 10 needs to be driven, the toothed plate 14 is meshed with the gear 15 by moving the gear 15 to the position right below the toothed plate 14, if the supporting plate 10 is not driven, the toothed plate 14 is separated from the gear 15 by moving the gear 15 to the other end of the shaft groove 16, when the rotating shaft 6 drives a screw rod 2 to rotate, the toothed plate 14 can not be driven to move, and when a clamping plate 3 is separated during blanking, a pushing plate 9 is driven, so that synchronous blanking is realized.

Referring to fig. 1-4, the inner side surface of the clamping plate 3 is provided with an anti-slip layer 19, and anti-slip patterns are arranged on the anti-slip layer 19, so that the clamping stability of the clamping plate 3 is effectively ensured through the arranged anti-slip layer 19.

Principle of operation

During the use, when the battery that treats the detection carries out the material loading, the accessible dials out the detection end electrode of battery and exposes outside, place between two splint 3, through driving actuating mechanism, drive lead screw 2 rotates, and then drive two splint 3 on the lead screw 2 and go on in opposite directions, and then realize carrying out the centre gripping to the battery, through the detection groove 4 that sets up, make the electrode that is peeled off on the battery pass detection groove 4 and thermal property analyzer 5 be connected, detect its coefficient of heat conductivity through thermal property analyzer 5 to the electrode, after the detection is accomplished, through reverse rotation lead screw 2, make two splint 3 separation, steadily drop the battery on workstation 1, and drive through pushing mechanism, release the battery between two splint 3, realize the unloading operation, effectively increased the stability of battery in the testing process.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. A device for testing thermal conductivity of a battery, comprising: workstation (1) and clamping piece, the clamping piece sets up on workstation (1), its characterized in that: the clamping piece comprises a screw rod (2), clamping plates (3) and a driving mechanism, wherein the screw rod (2) is rotatably arranged on the workbench (1), threads which are reversely arranged are arranged at two ends of the screw rod (2), the clamping plates (3) are arranged on the workbench (1) in two symmetrical mode, one clamping plate (3) is provided with a detection groove (4), the screw rod (2) is driven by the driving mechanism to be arranged, two clamping plates (3) are arranged, a pushing mechanism is arranged on the workbench (1), and a thermal physical property analyzer (5) is arranged on the workbench (1).

2. The device for testing thermal conductivity of a battery according to claim 1, wherein: the driving mechanism comprises a rotating shaft (6) and a motor (7), the motor (7) is arranged below the workbench (1), the rotating shaft (6) is arranged at the output end of the motor (7) in a linkage mode, the rotating shaft (6) is arranged in parallel with the screw rod (2), and one end of the rotating shaft (6) is arranged in a linkage mode through a belt (8) and the screw rod (2).

3. The device for testing thermal conductivity of a battery according to claim 2, wherein: the pushing mechanism comprises a pushing plate (9) and a supporting plate (10), a sliding groove (11) is formed in the center of the workbench (1), the supporting plate (10) is arranged on the sliding groove (11) in a sliding mode, and the pushing plate (9) is vertically arranged above the rear portion of the supporting plate (10).

4. A device for testing thermal conductivity of a battery according to claim 3, wherein: be located spout (11) central point puts be equipped with bar logical groove (12) on workstation (1), bar logical inslot (12) are worn to be equipped with connecting rod (13) perpendicularly, the upper end of connecting rod (13) with backup pad (10) assembly connection, the lower extreme of connecting rod (13) is equipped with pinion rack (14) perpendicularly, be equipped with gear (15) on pivot (6), gear (15) and pinion rack (14) meshing set up.

5. The device for testing thermal conductivity of a battery according to claim 4, wherein: be equipped with axial groove (16) on pivot (6), gear (15) set up in axial groove (16), axial groove (16) length is the twice of gear (15) length, be equipped with spacing (17) on axial groove (16), gear (15) inboard be equipped with spacing (17) card fit's spacing groove (18), pinion rack (14) with gear (15) are isometric just be located just over an axial groove (16).

6. The device for testing thermal conductivity of a battery according to claim 1, wherein: the anti-slip layer (19) is arranged on the inner side surface of the clamping plate (3), and anti-slip patterns are arranged on the anti-slip layer (19).