CN218995612U - Lithium battery module expansion force testing device - Google Patents
Lithium battery module expansion force testing device Download PDFInfo
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- CN218995612U CN218995612U CN202223377016.3U CN202223377016U CN218995612U CN 218995612 U CN218995612 U CN 218995612U CN 202223377016 U CN202223377016 U CN 202223377016U CN 218995612 U CN218995612 U CN 218995612U
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- 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
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a lithium battery module expansion force testing device which comprises a frame, a mounting plate for fixing a lithium battery module, a pressing mechanism for pressing the lithium battery module and a lifting mechanism for driving the mounting plate to move, wherein the pressing end of the pressing mechanism is extended to be abutted against the side surface of the lithium battery module, the mounting plate is in sliding connection with the lifting mechanism, and the lifting mechanism is fixed on the frame; the testing device realizes testing of lithium battery modules with different sizes, and improves testing accuracy and authenticity.
Description
Technical Field
The utility model relates to the technical field of lithium battery module preparation, in particular to a device for testing the expansion force of a lithium battery module.
Background
The lithium ion battery can expand outwards in the charge and discharge process, and the expansion force is directly related to the mechanical structure safety of the battery cell, the module and even the PACK. In recent years, the expansion force test has become a basic research test for lithium battery modules. However, in the existing test, the test tool is fixed in size and can only be matched with a single-size sample, and in order to test the expansion force of the modules with different sizes, the test tools with different sizes are required to be customized, so that the great waste of resources is caused.
Meanwhile, the current test fixture cannot be matched with the actual installation state of the battery module in the PACK, and deviation between a test result and an actual use result is easy to cause.
Disclosure of Invention
Based on the technical problems in the background art, the utility model provides the expansion force testing device for the lithium battery module, which realizes testing of lithium battery modules with different sizes and improves testing accuracy and authenticity.
The utility model provides a lithium battery module expansion force testing device which comprises a frame, a mounting plate for fixing a lithium battery module, a pressing mechanism for pressing the lithium battery module and a lifting mechanism for driving the mounting plate to move.
Further, elevating system includes lift, vertical guide slot and with vertical guide slot sliding connection's vertical slider, elevating system symmetric distribution is in the both sides of mounting panel, and mounting panel and the vertical slider fixed connection of symmetric setting, the lift is fixed in on the frame, the flexible end and the mounting panel fixed connection of lift.
Further, the lifter is arranged at the center of the mounting plate, and the two lifting mechanisms are symmetrically arranged relative to the center line of the lifter.
Further, the frame comprises a front vertical plate, a bottom plate and a rear vertical plate, and the front vertical plate and the rear vertical plate are respectively fixed on two opposite sides of the bottom plate.
Further, the frame also comprises at least one connecting rod, and two ends of the connecting rod are fixedly connected with the front vertical plate and the rear vertical plate respectively.
Further, the pressure applying mechanism comprises a first pressure applying component and a second pressure applying component, the first pressure applying component and the second pressure applying component are fixed on the frame, the telescopic ends of the first pressure applying component and the telescopic ends of the second pressure applying component are respectively abutted to two opposite sides of the lithium battery module after being stretched, and the first pressure applying component and the second pressure applying component are symmetrically arranged relative to the central line of the lifter.
Further, a transverse guide groove and a transverse sliding block which is in sliding connection with the transverse guide groove are arranged on the bottom plate, and the first pressing component and the second pressing component are respectively and fixedly connected with the transverse sliding block.
Further, the first application assembly comprises a first pressure sensor, a first extruding plate and a first servo motor fixed on the front vertical plate, wherein the output end of the first servo motor penetrates through the front vertical plate and is fixedly connected with the first pressure sensor, the first extruding plate is fixed on one group of transverse sliding blocks, and the output end of the first servo motor drives the first pressure sensor to move and then is sequentially abutted to the first extruding plate and one side of the lithium battery module.
Further, the second applying assembly comprises a second pressure sensor, a second extruding plate and a second servo motor fixed on the rear vertical plate, wherein the output end of the second servo motor penetrates through the rear vertical plate and is fixedly connected with the second pressure sensor, the second extruding plate is fixed on the other group of transverse sliding blocks, and the output end of the second servo motor drives the second pressure sensor to move and then is sequentially abutted against the second extruding plate and the other side of the lithium battery module.
The expansion force testing device for the lithium battery module has the advantages that: according to the expansion force testing device for the lithium battery module, provided by the structure, the first extrusion plate and the second extrusion plate are flexibly disassembled, and the extrusion plates with the same size as the sample can be selected for testing, so that the universality of the device is improved; the pressing assembly adopts a precise first servo motor and a precise second servo motor, and has better anti-loosening effect in the testing process compared with a common screw structure; the first pressure sensor and the second pressure sensor can read the expansion value of the lithium battery module, so that the pressure value in the charging and discharging process can be obtained when the lithium battery module is charged and discharged, and further the expansion force test of the lithium battery module is realized; the lithium battery module is provided with the lifting mechanism, the lithium battery module can move in the vertical direction, and the first pressure sensor and the second pressure sensor are adjusted to be always at the central shaft position of the lithium battery module, so that the device can be used for measuring lithium battery modules with different sizes.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic view of a structure in which a lithium battery module is placed on a base plate;
the device comprises a 1-frame, a 2-lithium battery module, a 3-mounting plate, a 4-pressing mechanism, a 5-lifting mechanism, a 11-front vertical plate, a 12-bottom plate, a 13-rear vertical plate, a 14-connecting rod, a 15-transverse guide groove, a 16-transverse sliding block, 17-mounting bolt holes, a 41-first pressing component, a 42-second pressing component, a 51-lifting machine, a 52-longitudinal guide groove, a 53-longitudinal sliding block, a 54-protruding block, a 411-first pressing plate, a 412-first servo motor, a 413-first pressure sensor, a 421-second pressing plate, a 422-second servo motor and a 423-second pressure sensor.
Detailed Description
In the following detailed description of the present utility model, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.
As shown in fig. 1 and 2, the expansion force testing device for a lithium battery module provided by the utility model comprises a frame 1, a mounting plate 3 for fixing the lithium battery module 2, a pressing mechanism 4 for pressing the lithium battery module 2 and a lifting mechanism 5 for driving the mounting plate 3 to move, wherein the pressing end of the pressing mechanism 4 is extended to be abutted against the side surface of the lithium battery module 2, the mounting plate 3 is in sliding connection with the lifting mechanism 5, and the lifting mechanism 5 is fixed on the frame 1.
Set up the bolt hole on the mounting panel 3, pass the bolt hole through and be fixed in on the mounting panel 3 with lithium battery module 2 to simulate lithium battery module 2 actual installation state in PACK, through carrying out the expansion force test to lithium battery module 2 under this state, improved test authenticity and accuracy.
The setting of elevating system 5 can adjust the position of lithium cell module 2 to make lithium cell module 2 and pressing mechanism 4 be in same axis, and then effectively extrude lithium cell module 2 through pressing mechanism 4, improved lithium cell module expansion force test accuracy, can adapt to not unidimensional lithium cell module needs simultaneously, improve this testing arrangement's application scope.
In this embodiment, the lifting mechanism 5 includes a lifter 51, a longitudinal guide groove 52 and a longitudinal sliding block 53 slidably connected with the longitudinal guide groove 52, the lifting mechanism 5 is symmetrically distributed on two sides of the mounting plate 3, the mounting plate 3 is fixedly connected with the symmetrically arranged longitudinal sliding blocks 53, the lifter 51 is fixed on the frame 1, and a telescopic end of the lifter 51 is fixedly connected with the mounting plate 3.
The lifter 51 is fixed on the projection 54, and the projection 54 is fixed on the bottom plate 12, wherein the lifter 51 is arranged at the center of the mounting plate 3 for improving the structural stability between the lifting mechanism 5 and the mounting plate 3, and the longitudinal guide groove 52 and the longitudinal sliding block 53 are respectively symmetrically arranged relative to the center line of the lifter 51. Two longitudinal guide grooves 52 may be provided at one side of the mounting plate 3, and one longitudinal slider 53 is provided on each longitudinal guide groove 52 so that the mounting plate 3 is fixed with the four longitudinal sliders 53 at four positions to ensure stable up-and-down movement of the mounting plate 3 under the drive of the lifter 51.
In the present embodiment, the frame 1 includes a front riser 11, a bottom plate 12, and a rear riser 13, the front riser 11 and the rear riser 13 being fixed to opposite sides of the bottom plate 12, respectively; for the stability of the front vertical plate 11 and the rear vertical plate 13, the two ends of the connecting rod 14 are respectively and fixedly connected with the front vertical plate 11 and the rear vertical plate 13, so as to avoid the defect of inaccurate results when the expansion force of the lithium battery module 2 is tested due to structural deformation of the front vertical plate 11 and the rear vertical plate 13.
In this embodiment, the pressing mechanism 4 includes a first pressing component 41 and a second pressing component 42, where the first pressing component 41 and the second pressing component 42 are fixed on the frame 1, and the telescopic ends of the first pressing component 41 and the second pressing component 42 are respectively abutted to opposite sides of the lithium battery module 2 after being elongated, and the first pressing component 41 and the second pressing component 42 are symmetrically arranged relative to the center line of the lifter 51. The base plate 12 is provided with a transverse guide groove 15 and a transverse sliding block 16 which is in sliding connection with the transverse guide groove 15, and the first pressing component 41 and the second pressing component 42 are respectively fixedly connected with the transverse sliding block 16.
Specifically, the first pressing assembly 41 includes a first pressure sensor 413, a first pressing plate 411, and a first servo motor 412 fixed on the front vertical plate 11, where an output end of the first servo motor 412 passes through the front vertical plate 11 and is fixedly connected with the first pressure sensor 413, the first pressing plate 411 is fixed on one set of transverse sliding blocks 16, and after the output end of the first servo motor 412 drives the first pressure sensor 413 to move, the output end of the first servo motor drives the first pressure sensor 413 to sequentially abut against one side of the lithium battery module 2 of the first pressing plate 411.
The second pressing assembly 42 includes a second pressure sensor 423, a second extruding plate 421, and a second servo motor 422 fixed on the rear vertical plate 13, where an output end of the second servo motor 422 passes through the rear vertical plate 13 and is fixedly connected with the second pressure sensor 423, the second extruding plate 421 is fixed on the other group of transverse sliders 16, and an output end of the second servo motor 422 drives the second pressure sensor 423 to move and then sequentially abuts against the second extruding plate 421 and the other side of the lithium battery module 2.
After the lithium battery module is fixed on the bottom plate 12 through bolts, the expansion force test is carried out on the lithium battery module 2 under the extrusion action of the first pressure application assembly 41 and the second pressure application assembly 42, the first pressure application assembly 41 and the second pressure application assembly 42 which are symmetrically arranged on two sides enable two sides of the lithium battery module 2 to bear force, meanwhile, the first pressure sensor 413 and the second pressure sensor 423 can detect the bearing force of the lithium battery module 2 in the expansion force test in real time, and the truest overall external expansion force result of the lithium battery module can be tested.
The first extrusion plate 411 and the second extrusion plate 421 are flexibly disassembled, and the extrusion plates with the same size as the sample can be selected for testing, so that the universality of the device is improved; the pressing assembly adopts the precise first servo motor 412 and the second servo motor 422, and has better anti-loosening effect in the test process compared with the common screw structure; the first pressure sensor 413 and the second pressure sensor 423 can read the expansion value of the lithium battery module 2, so that the pressure value in the charge and discharge process can be obtained when the lithium battery module 2 is charged and discharged, and further the expansion force test of the lithium battery module is realized.
The working process comprises the following steps: firstly, select the first extrusion plate 411, the second extrusion plate 421 with lithium cell module 2 size matching, be connected through the bolt with the horizontal slider 16 on first extrusion plate 411, the second extrusion plate 421 and the mounting panel 3, place lithium cell module 2 on mounting panel 3, use the installation bolt to fix lithium cell module 2 through the installation bolt hole 17 on mounting panel 3, and apply the same torsion with lithium cell module 2 in PACK actual mounting to the bolt, use elevator 51 to adjust lithium cell module 2's vertical height, make first pressure sensor 413, second pressure sensor 423 all be in the same axis with lithium cell module 2 central point, with first pressure sensor 413, second pressure sensor 423 connect pressure acquisition module, first servo motor 412, second servo motor 422 is connected with control computer, control first servo motor 412, the flexible of second servo motor 422, first pressure sensor 413, second pressure sensor can be along with first servo motor 412, second servo motor 422 together impel, impel in the propelling process respectively with first extrusion plate 411, after the second extrusion plate 421, first compression plate 421, can be in contact with lithium cell module 2, the value is connected to the second compression plate 421, can be taken out the compression plate 2, and the value is connected to the lithium cell module 2, can be removed from the compression plate 2, and the accurate value is measured and the battery module is discharged, the measurement is accomplished to the battery module is connected to the lithium cell module 2, can be connected to the compression plate is reset, and the pressure module is discharged, can be discharged to the battery module is discharged by the accurate value is connected to the battery module 2, and the battery module is discharged.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (9)
1. The utility model provides a lithium battery module expansion force testing arrangement, a serial communication port, including frame (1), mounting panel (3) that are used for fixed lithium battery module (2), be used for carrying out extruded pressing mechanism (4) and be used for driving elevating system (5) that mounting panel (3) removed to lithium battery module (2), the extrusion end extension of pressing mechanism (4) and lithium battery module (2) side butt, mounting panel (3) and elevating system (5) sliding connection, elevating system (5) are fixed in on frame (1).
2. The lithium battery module expansion force testing device according to claim 1, wherein the lifting mechanism (5) comprises a lifting machine (51), a longitudinal guide groove (52) and longitudinal sliding blocks (53) which are in sliding connection with the longitudinal guide groove (52), the lifting mechanism (5) is symmetrically distributed on two sides of the mounting plate (3), the mounting plate (3) is fixedly connected with the symmetrically arranged longitudinal sliding blocks (53), the lifting machine (51) is fixed on the frame (1), and the telescopic end of the lifting machine (51) is fixedly connected with the mounting plate (3).
3. The expansion force testing device of a lithium battery module according to claim 2, wherein the lifter (51) is disposed at a central position of the mounting plate (3), and the longitudinal guide groove (52) and the longitudinal slider (53) are disposed symmetrically with respect to a center line of the lifter (51), respectively.
4. A lithium battery module expansion force testing device according to claim 3, wherein the frame (1) comprises a front vertical plate (11), a bottom plate (12) and a rear vertical plate (13), and the front vertical plate (11) and the rear vertical plate (13) are respectively fixed on two opposite sides of the bottom plate (12).
5. The expansion force testing device of a lithium battery module according to claim 4, wherein the frame (1) further comprises at least one connecting rod (14), and two ends of the connecting rod (14) are fixedly connected with the front vertical plate (11) and the rear vertical plate (13) respectively.
6. The expansion force testing device of a lithium battery module according to claim 4, wherein the pressing mechanism (4) comprises a first pressing component (41) and a second pressing component (42), the first pressing component (41) and the second pressing component (42) are fixed on the frame (1), the telescopic ends of the first pressing component (41) and the second pressing component (42) are respectively abutted to two opposite sides of the lithium battery module (2) after being stretched, and the first pressing component (41) and the second pressing component (42) are symmetrically arranged relative to a central line of the lifter (51).
7. The expansion force testing device of a lithium battery module according to claim 6, wherein the bottom plate (12) is provided with a transverse guide groove (15) and a transverse sliding block (16) slidably connected with the transverse guide groove (15), and the first pressing component (41) and the second pressing component (42) are fixedly connected with the transverse sliding block (16) respectively.
8. The expansion force testing device of a lithium battery module according to claim 7, wherein the first pressure applying assembly (41) comprises a first pressure sensor (413), a first extrusion plate (411) and a first servo motor (412) fixed on the front vertical plate (11), an output end of the first servo motor (412) penetrates through the front vertical plate (11) and is fixedly connected with the first pressure sensor (413), the first extrusion plate (411) is fixed on one group of transverse sliding blocks (16), and an output end of the first servo motor (412) drives the first pressure sensor (413) to move and then sequentially abuts against one side of the first extrusion plate (411) and one side of the lithium battery module (2).
9. The expansion force testing device of a lithium battery module according to claim 8, wherein the second pressing assembly (42) comprises a second pressure sensor (423), a second extrusion plate (421) and a second servo motor (422) fixed on the rear vertical plate (13), an output end of the second servo motor (422) penetrates through the rear vertical plate (13) to be fixedly connected with the second pressure sensor (423), the second extrusion plate (421) is fixed on the other group of transverse sliding blocks (16), and an output end of the second servo motor (422) drives the second pressure sensor (423) to move and then sequentially abut against the second extrusion plate (421) and the other side of the lithium battery module (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223377016.3U CN218995612U (en) | 2022-12-14 | 2022-12-14 | Lithium battery module expansion force testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223377016.3U CN218995612U (en) | 2022-12-14 | 2022-12-14 | Lithium battery module expansion force testing device |
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| CN218995612U true CN218995612U (en) | 2023-05-09 |
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| CN202223377016.3U Active CN218995612U (en) | 2022-12-14 | 2022-12-14 | Lithium battery module expansion force testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118032187A (en) * | 2024-03-07 | 2024-05-14 | 宁德时代新能源科技股份有限公司 | Battery cell expansion force testing tool, testing equipment and using method of testing equipment |
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2022
- 2022-12-14 CN CN202223377016.3U patent/CN218995612U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118032187A (en) * | 2024-03-07 | 2024-05-14 | 宁德时代新能源科技股份有限公司 | Battery cell expansion force testing tool, testing equipment and using method of testing equipment |
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