Battery cell hot-pressing effect testing equipment

Abstract

The utility model belongs to the technical field of battery production, and particularly relates to battery cell hot-pressing effect testing equipment, which comprises a workbench, a battery cell hot-pressing effect testing device and a battery cell hot-pressing effect testing device, the fixing device comprises a fixing frame, a first moving seat and a pressing piece, the fixing frame is installed on the workbench, the first moving seat can be movably installed on the fixing frame in the first direction, and the pressing piece is installed on the first moving seat and used for abutting against and pressing the battery cell; the testing device comprises a three-axis moving mechanism and a flatness detector, the three-axis moving mechanism is installed on the workbench, and the flatness detector is installed at the driving end of the three-axis moving mechanism; the electrical core flatness testing device has the beneficial effects that the device is simple to operate, the flatness of an electrical core can be accurately tested, the consistency of a plurality of groups of electrical cores with the same size can be roughly fed back, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production, and particularly relates to a testing device for the hot pressing effect of battery cells. Background Art

[0002] A battery cell is the main component inside a battery, usually formed by winding or laminating a positive electrode, a negative electrode, and a separator in a specific order. Currently, after the battery cell is wound or laminated, it will be in a fluffy state and usually needs to be subjected to hot pressing and shaping treatment. The hot pressing effect of the battery cell has a great influence on subsequent assembly. A battery cell that is not tightly pressed has a large rebound, which is likely to cause difficulties in inserting it into the shell, and even the situation of the aluminum shell scratching the battery cell may occur.

[0003] In the prior art, for the judgment of the hot pressing effect of battery cells, most are through the naked eye observation and subjective evaluation of technicians, and accurate judgment cannot be achieved, often resulting in the need for the battery cells to be reworked for re-hot pressing. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a testing device for the hot pressing effect of battery cells to solve the above problems in view of the above existing technical problems.

[0005] In view of this, the utility model provides a testing device for the hot pressing effect of battery cells, including:

[0006] A workbench for placing the battery cells to be tested;

[0007] A fixing device including a fixing frame, a first moving seat, and a pressing member. The fixing frame is installed on the workbench, the first moving seat is movably installed on the fixing frame along a first direction, and the pressing member is installed on the first moving seat for abutting and pressing the battery cell;

[0008] A testing device including a three-axis moving mechanism and a flatness detector. The three-axis moving mechanism is installed on the workbench, and the flatness detector is installed on the driving end of the three-axis moving mechanism;

[0009] Wherein, the three-axis moving mechanism is used to control the flatness detector to move along the first direction, the second direction, and the third direction, and the flatness detector is used to measure the flatness of each position of the battery cell.

[0010] Further, the three-axis moving mechanism includes:

[0011] A moving frame movably installed on the workbench along the second direction;

[0012] A second moving seat movably installed on the moving frame along the first direction;

[0013] A support frame movably installed on the second moving seat along the third direction;

[0014] Among them, the flatness detector is installed on the support frame.

[0015] Furthermore, it also includes:

[0016] A guide rail, which is arranged on the workbench;

[0017] A sliding seat, which is movably installed on the guide rail along the second direction;

[0018] Among them, the moving frame is installed on the sliding seat.

[0019] Furthermore, it also includes:

[0020] A number of driving modules, which are respectively used to control the movement of the moving frame, the second moving seat and the support frame.

[0021] Furthermore, it also includes:

[0022] A first driving module, which is used to control the movement of the first moving seat along the first direction.

[0023] Furthermore, the flatness detector includes:

[0024] A measuring probe, which is used to abut against the flat head of the battery cell.

[0025] Furthermore, the flatness detector also includes:

[0026] A liquid crystal display screen, which is used to display the flatness value obtained by measurement;

[0027] A test button, which is used to control the opening and closing of the flatness detector.

[0028] Furthermore, the pressing member includes:

[0029] A pressure rod, which is installed on the first moving seat;

[0030] A pressure block, which is installed on the pressure rod and is used to abut against the battery cell.

[0031] Furthermore, the pressing member also includes:

[0032] A pressure display, which is installed on the pressure rod and is used to measure and display the pressure applied by the pressure block to the battery cell in real time.

[0033] Furthermore, the pressure block is made of rubber material.

[0034] The beneficial effects of the present utility model are:

[0035] The cell hot pressing effect testing device fixes the cell to be tested by controlling the first moving seat to lift along the first direction Z to drive the pressing member to abut against the cell, and takes the abutting point as a reference plane with a level of 0. Then, the flatness detector is controlled by a three-axis moving mechanism to measure the flatness of each position of the cell and compare it with the reference plane, so as to judge the hot pressing effect of the cell. The device is easy to operate, can accurately measure the flatness of the cell, and can also roughly reflect the consistency of multiple groups of cells of the same size, with high practicality. Brief Description of the Drawings

[0036] Figure 1 is a schematic structural diagram of the present utility model;

[0037] Figure 2 is a schematic structural diagram of another perspective of the present utility model;

[0038] Figure 3 is a schematic structural diagram of the flatness detector of the present utility model;

[0039] Figure 4 is a schematic structural diagram of the cell to be tested of the present utility model;

[0040] The markings in the figures are shown as:

[0041] 1, workbench; 2, fixing frame; 3, first moving seat; 4, pressing member; 41, pressing rod; 42, pressing block; 5, three-axis moving mechanism; 51, moving frame; 52, second moving seat; 53, support frame; 6, flatness detector; 61, measuring probe; 62, liquid crystal display screen; 63, test button; 7, guide rail; 8, sliding seat; Z, first direction; X, second direction; Y, third direction. Detailed Description of the Preferred Embodiments

[0042] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0043] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] Embodiment 1:

[0045] This embodiment provides a testing device for the thermal pressing effect of an electric core, including:

[0046] A workbench 1 for placing the electric core to be tested;

[0047] A fixing device, which includes a fixing frame 2, a first moving seat 3, and a pressing member 4. The fixing frame 2 is installed on the workbench 1. The first moving seat 3 is movably installed on the fixing frame 2 along the first direction Z. The pressing member 4 is installed on the first moving seat 3 and is used to abut and press the electric core.

[0048] A testing device, which includes a three-axis moving mechanism 5 and a flatness detector 6. The three-axis moving mechanism 5 is installed on the workbench 1. The flatness detector 6 is installed on the driving end of the three-axis moving mechanism 5;

[0049] Among them, the three-axis moving mechanism 5 is used to control the flatness detector 6 to move along the first direction Z, the second direction X, and the third direction Y. The flatness detector 6 is used to measure the flatness of each position of the electric core.

[0050] In this technical solution, first place the thermally pressed electric core at the center position of the workbench 1. Then control the first moving seat 3 to descend along the first direction Z, so that the pressing member 4 on the first moving seat 3 abuts the middle position of the electric core and applies pressure to the electric core, so that the pressure applied by the pressing member 4 to the electric core is maintained at 80 N (through practice, it is known that when the pressure applied to the electric core is 80 N, it can not only ensure that the electric core is firmly pressed on the workbench 1, but also will not cause damage to the surface of the electric core). Then lock the first moving seat 3 on the fixing frame 2, so that the electric core is firmly pressed and fixed on the workbench 1, and set the point where the middle position of the electric core is abutted by the pressing member 4 as the reference point of level 0.

[0051] The three-axis moving mechanism 5 on the workbench 1 drives the flatness detector 6 to move along the first direction Z, the second direction X, and the third direction Y, so that the flatness detector 6 measures the flatness values of six positions of the battery cell respectively. The six test positions of the battery cell are as Figure 4 shown. Compare the measured levelness value with the levelness of the reference point at the middle position of the battery cell, and calculate the difference to judge the hot pressing effect of the battery cell. In addition, multiple groups of measurements can be carried out for battery cells of the same size to avoid measurement errors caused by a single battery cell.

[0052] In summary, the hot pressing effect test device for the battery cell controls the first moving seat 3 to lift along the first direction Z to drive the pressing member 4 to press against the battery cell to be tested, fix the battery cell, and at the same time use the contact point as the reference plane with a levelness of 0. Then, the three-axis moving mechanism 5 is used to control the flatness detector 6 to measure the levelness of each position of the battery cell and compare it with the reference plane, so as to judge the hot pressing effect of the battery cell. The operation is simple, it can accurately measure the flatness of the battery cell, and can also roughly reflect the consistency of multiple groups of battery cells of the same size, with high practicality.

[0053] Embodiment 2:

[0054] This embodiment provides a hot pressing effect test device for a battery cell. In addition to including the technical solutions of the above embodiment, it also has the following technical features.

[0055] Furthermore, the three-axis moving mechanism 5 includes:

[0056] A moving frame 51, which is movably installed on the workbench 1 along the second direction X;

[0057] A second moving seat 52, which is movably installed on the moving frame 51 along the first direction Z;

[0058] A support frame 53, which is movably installed on the second moving seat 52 along the third direction Y;

[0059] Among them, the flatness detector 6 is installed on the support frame 53.

[0060] In this technical solution, by driving the support frame 53 to move along the third direction Y, the movement adjustment of the flatness detector 6 in the third direction Y can be realized; by driving the second moving seat 52 to move along the first direction Z to drive the support frame 53 to move along the first direction Z, the movement adjustment of the flatness detector 6 in the first direction Z can be realized; by driving the moving frame 51 to move along the second direction X to drive the second moving seat 52 and the support frame 53 to move together along the second direction X, the movement adjustment of the flatness detector 6 in the second direction X can be realized.

[0061] It is worth mentioning that the movement of the moving frame 51, the second moving seat 52 and the support frame 53 can be manually controlled by a person or can be controlled by setting a plurality of second driving modules to respectively control the movement of the moving frame 51, the second moving seat 52 and the support frame 53.

[0062] In summary, through this structural design, the flatness detector 6 can move freely in the first direction Z, the second direction X and the third direction Y, ensuring that the flatness detector 6 can measure the flatness of each position of the battery cell, with high practicability.

[0063] Embodiment 3:

[0064] This embodiment provides a battery cell hot pressing effect testing device, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0065] Furthermore, it further includes:

[0066] A guide rail 7, which is arranged on the workbench 1;

[0067] A sliding seat 8, which is movably installed on the guide rail 7 along the second direction X;

[0068] Among them, the moving frame 51 is installed on the sliding seat 8.

[0069] In this technical solution, through this structural design, it plays a certain guiding role in the movement of the moving frame 51 in the second direction X, and makes the movement of the moving frame 51 smoother, effectively improving the convenience; at the same time, it can also enhance the movement stability of the moving frame 51 in the second direction X, reducing the vibration and noise generated during the movement, with high practicability.

[0070] Embodiment 4:

[0071] This embodiment provides a battery cell hot pressing effect testing device, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0072] Furthermore, it further includes:

[0073] A plurality of second driving modules, which are respectively used to control the movement of the moving frame 51, the second moving seat 52 and the support frame 53.

[0074] Furthermore, it further includes:

[0075] A first driving module, which is used to control the movement of the first moving seat 3 along the first direction Z.

[0076] In this technical solution, a bracket (not shown in the attached drawings of the specification) is installed on the periphery of the workbench 1, and the first driving module and several second driving modules are installed on the bracket. The first driving module and several second driving modules can be driving electric cylinders or lead screw transmission modules. The movement of the moving frame 51, the second moving seat 52, and the support frame 53 on their respective moving paths is precisely controlled by multiple second driving modules to ensure the accurate measurement position of the flatness detector 6. The first driving module is used to precisely control the movement of the first moving seat 3 in the first direction Z to ensure that the pressing member 4 on the first moving seat 3 can precisely abut against the middle position of the battery cell and apply pressure to the battery cell. Moreover, no manual operation is required, effectively improving the work efficiency.

[0077] Embodiment 5:

[0078] This embodiment provides a battery cell hot pressing effect testing device, which, in addition to including the technical solution of the above embodiment, further has the following technical features.

[0079] Furthermore, the flatness detector 6 includes:

[0080] A measuring probe 61, which is used to abut against the flat head of the battery cell.

[0081] Furthermore, the flatness detector 6 further includes:

[0082] A liquid crystal display screen 62, which is used to display the flatness value obtained by measurement;

[0083] A test button 63, which is used to control the opening and closing of the flatness detector 6.

[0084] In this technical solution, the flatness detector 6 is installed on the support frame 53. As Figure 3 shown, the flatness detector 6 includes a measuring probe 61, a liquid crystal display screen 62, and a test button 63. The measuring probe 61 is used to abut against the surface of the battery cell to be tested and measure the flatness of the battery cell surface. The test button 63 is used to control the opening and closing of the flatness detector 6, and the liquid crystal display screen 62 is used to display the flatness value obtained by measurement.

[0085] The measuring probe 61 is used to abut against the flat head of the battery cell. On the one hand, it can make the measured flatness value more accurate, and on the other hand, it can avoid scratching the battery cell by the head of the measuring probe 61.

[0086] Embodiment 6:

[0087] This embodiment provides a battery cell hot pressing effect testing device, which, in addition to including the technical solution of the above embodiment, further has the following technical features.

[0088] Furthermore, the pressing member 4 includes:

[0089] The compression rod 41 is installed on the first moving seat 3;

[0090] The pressing block 42 is installed on the compression rod 41 and is used to abut against the battery cell.

[0091] Furthermore, the pressing member 4 further includes:

[0092] A pressure display installed on the compression rod 41 for measuring and displaying in real time the magnitude of the pressure exerted by the pressing block 42 on the battery cell.

[0093] Furthermore, the pressing block 42 is made of rubber.

[0094] In this technical solution, the compression rod 41 is in an "L" shape. One end of the compression rod 41 is fixedly installed on the first moving seat 3 and can move along the first direction Z together with the first moving seat 3. The pressing block 42 is detachably installed on the other end of the compression rod 41. By setting the pressing block 42, the contact area between the pressing member 4 and the battery cell is increased, the pressure is reduced, and the battery cell is prevented from being damaged by extrusion.

[0095] By setting the pressure display, it is convenient for the staff to observe and understand the magnitude of the pressure exerted by the pressing block 42 on the battery cell, and it is convenient to keep the pressure exerted by the pressing block 42 on the battery cell at 80 N.

[0096] The pressing block 42 being made of rubber can effectively absorb and buffer the impact force, thereby reducing the damage to the battery cell caused by the pressing block 42 during the positioning process, and has high practicability.

[0097] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A battery cell thermal pressure effect test device, characterized in that: include: A workbench (1), wherein the workbench (1) is used to place a battery cell to be tested; A fixing device, the fixing device comprising a fixing frame (2), a first movable seat (3) and a pressing member (4), the fixing frame (2) being mounted on a workbench (1), the first movable seat (3) being movably mounted on the fixing frame (2) along a first direction (Z), and the pressing member (4) being mounted on the first movable seat (3) for abutting against and pressing the battery core; A testing device, the testing device comprising a three-axis moving mechanism (5) and a flatness detector (6), the three-axis moving mechanism (5) being mounted on a workbench (1), and the flatness detector (6) being mounted on a driving end of the three-axis moving mechanism (5); The three-axis moving mechanism (5) is used to control the flatness detector (6) to move along a first direction (Z), a second direction (X) and a third direction (Y), and the flatness detector (6) is used to measure the flatness of each position of the battery cell.

2. The battery cell thermal pressure effect testing device according to claim 1, characterized in that: The three-axis moving mechanism (5) comprises: A movable frame (51), wherein the movable frame (51) is mounted on the workbench (1) so as to be movable along a second direction (X); A second movable seat (52), the second movable seat (52) being mounted on the movable frame (51) so as to be movable along a first direction (Z); A support frame (53), wherein the support frame (53) is mounted on the second movable seat (52) so as to be movable along a third direction (Y); Wherein, the flatness detector (6) is installed on a support frame (53).

3. The battery cell thermal pressure effect testing device according to claim 2, characterized in that: Also includes: A guide rail (7), wherein the guide rail (7) is arranged on the workbench (1); A slide seat (8), wherein the slide seat (8) is mounted on the guide rail (7) so as to be movable along a second direction (X); Wherein, the movable frame (51) is installed on the slide seat (8).

4. The battery core thermal pressure effect testing device according to claim 2, characterized in that: Also includes: A plurality of second driving modules are provided, wherein the plurality of second driving modules are respectively used to control the movement of the moving frame (51), the second moving seat (52) and the supporting frame (53).

5. The battery core thermal pressure effect testing device according to claim 1, characterized in that: Also includes: A first driving module, wherein the first driving module is used to control the movement of the first moving seat (3) along a first direction (Z).

6. The battery cell thermal pressure effect testing device according to claim 1, characterized in that: The flatness detector (6) comprises: A measuring probe (61) is used to abut against the flat head of the battery cell.

7. The battery cell thermal pressure effect testing device according to claim 1, characterized in that: The flatness detector (6) further comprises: A liquid crystal display screen (62), the liquid crystal display screen (62) being used to display the flatness value obtained by measurement; A test button (63), wherein the test button (63) is used for controlling the opening and closing of the flatness detector (6).

8. The battery cell thermal pressure effect testing device according to claim 1, characterized in that: The pressing member (4) comprises: A pressure rod (41), wherein the pressure rod (41) is mounted on the first movable seat (3); A pressing block (42), wherein the pressing block (42) is mounted on the pressing rod (41) and is used to abut against the battery core.

9. The battery cell thermal pressure effect testing device according to claim 8, characterized in that: The pressing member (4) further comprises: A pressure display is installed on the pressure rod (41) and is used to measure and display in real time the magnitude of the pressure applied by the pressure block (42) to the battery cell.

10. The battery cell thermal pressure effect testing device according to claim 8, characterized in that: The pressing block (42) is made of rubber.

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