Battery cell shaping device

Abstract

The utility model provides a cell shaping device. The cell shaping device comprises a mounting plate, a guide rod assembly and a clamping jaw assembly, wherein the guide rod assembly and the clamping jaw assembly are arranged on the mounting plate; the clamping jaw assembly comprises a clamping jaw, and the clamping jaw is used for shaping a battery cell; the guide rod assembly comprises a guide rod, a guide rod sleeve, an elastic piece and an adjusting piece, the guide rod is arranged in the guide rod sleeve, the guide rod is movably connected with the guide rod sleeve, the elastic piece and the adjusting piece are both arranged on the guide rod, one end of the elastic piece abuts against the guide rod sleeve, and the other end of the elastic piece abuts against the adjusting piece. The clamping jaw is connected to the end, away from the adjusting piece, of the guide rod, the guide rod sleeve and the guide rod can move in the axial direction of the guide rod, the clamping jaw generates pressure acting on the battery cell, and the adjusting piece can adjust the pressure, acting on the battery cell, of the clamping jaw through the elastic piece. The battery cell shaping device solves the problem that the existing battery cell shaping device cannot adjust the acting force on the battery cell, so that the battery cell rounding effect is influenced.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery manufacturing equipment, in particular to a battery core shaping device. Background Art

[0002] Cylindrical lithium-ion batteries have a simple structural design, close interfaces between the positive and negative electrodes, good heat dissipation in groups, and excellent safety performance. They are widely used in industrial production and real life.

[0003] In the production process of cylindrical lithium-ion batteries, winding is a key process in the production of battery cells. Usually, the positive electrode sheet, negative electrode sheet and separator are wound together by winding equipment to form a battery cell. Due to the change in tension during the winding process, the battery cell wound by the guide column will be elliptical, which will affect the accuracy of the battery cell end face diameter detection in the subsequent process and make it difficult to load the battery cell into the battery casing. Therefore, the battery cell needs to be shaped before the battery cell is put into the shell. However, the existing battery cell shaping device cannot adjust the force acting on the battery cell, which affects the rounding effect of the battery cell and the accuracy of the battery cell diameter detection in the subsequent process. Utility Model Content

[0004] The utility model aims to solve the problem that the existing battery core shaping device cannot adjust the force acting on the battery core, thus affecting the rounding effect of the battery core.

[0005] In order to solve the above problems, the utility model provides a battery core shaping device, comprising:

[0006] A mounting plate and a guide rod assembly and a clamping claw assembly disposed on the mounting plate;

[0007] The clamp assembly includes a clamp, and the clamp is used to shape the battery core;

[0008] The guide rod assembly includes a guide rod, a guide rod sleeve, an elastic member and an adjusting member. The guide rod is arranged inside the guide rod sleeve. The guide rod and the guide rod sleeve are movably connected. The elastic member and the adjusting member are both arranged on the guide rod. One end of the elastic member abuts against the guide rod sleeve, and the other end of the elastic member abuts against the adjusting member. The clamp is connected to an end of the guide rod away from the adjusting member. The guide rod sleeve and the guide rod can generate movement along the axial direction of the guide rod so that the clamp generates pressure on the battery cell. The adjusting member can adjust the pressure of the clamp on the battery cell through the elastic member.

[0009] Further, the guide rod sleeve includes a first guide rod sleeve and a second guide rod sleeve. The first guide rod sleeve and the second guide rod sleeve are arranged along the axial direction of the guide rod, and there is a preset distance between the first guide rod sleeve and the second guide rod sleeve. The first guide rod sleeve abuts against the elastic member, the second guide rod sleeve is fixedly arranged on the mounting plate, and both the first guide rod sleeve and the second guide rod sleeve are movably connected to the guide rod.

[0010] Further, the guide rod assembly further includes a first cam bearing. The first cam bearing is connected to the first guide rod sleeve, and the first cam bearing can move along the axial direction of the guide rod, causing the guide rod and the first guide rod sleeve to move along the axial direction of the guide rod.

[0011] Further, the guide rod assembly further includes a second cam bearing. A first adjustment hole is formed in the first guide rod sleeve. The second cam bearing is connected to the guide rod, and the second cam bearing can move along the axial direction of the guide rod within the first adjustment hole.

[0012] Further, the guide rod assembly further includes a third cam bearing. A second adjustment hole is formed in the second guide rod sleeve. The third cam bearing is connected to the guide rod, and the third cam bearing can move along the axial direction of the guide rod within the second adjustment hole.

[0013] Further, the first adjustment hole is a kidney-shaped hole or an oval hole, and / or the second adjustment hole is a kidney-shaped hole or an oval hole.

[0014] Further, the adjusting member can move relative to the guide rod and can be locked with the guide rod to adjust the elastic force of the elastic member.

[0015] Further, the jaw assembly further includes a jaw cylinder for opening or closing the jaws. The jaw cylinder is fixed on the mounting plate.

[0016] Further, the jaws are three-jaw grippers.

[0017] The cell shaping device described in the present utility model is provided with an elastic member and an adjusting member on the guiding rod. The guiding rod sleeve and the guiding rod can move along the axial direction of the guiding rod, causing the elastic member to generate a pressure acting on the guiding rod sleeve. The guiding rod sleeve is movably connected to the guiding rod, and the guiding rod sleeve acts on the guiding rod with this pressure, and the guiding rod acts on the clamping jaw connected thereto with this pressure, so that the clamping jaw generates a pressure acting on the cell, thereby shaping the cell. By means of the adjusting member, the pressure exerted by the clamping jaw on the cell can be adjusted, so that the pressure during the cell shaping process can be adjusted, which is beneficial to improving the consistency during the cell shaping process and the accuracy of cell diameter detection, and avoiding the problem of difficult cell insertion into the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a perspective structural view of the cell shaping device provided in the embodiment of the present utility model;

[0019] Figure 2 FIG. 10 is a front structural view of the cell shaping device provided in the embodiment of the present utility model;

[0020] Figure 3 FIG. 14 is a top structural view of the cell shaping device provided in the embodiment of the present utility model;

[0021] Figure 4 FIG. 18 is a bottom structural view of the cell shaping device provided in the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solution of the present utility model will be clearly and elaborately described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features.

[0023] In the description of this specification, the description of the term "as an alternative embodiment" means that the specific features, structures, materials or characteristics described in connection with this embodiment or example are included in at least one alternative embodiment or alternative example of the present utility model. In this specification, the schematic expression of the above terms does not necessarily refer to the same implementation or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0024] Combined with Figures 1 to 4 As shown, this embodiment provides a battery cell shaping device, including: a mounting plate 10, a guide rod assembly 20 and a jaw assembly 30, where: the jaw assembly 30 includes jaws 31, and the jaws 31 are used to extrude and shape the battery cell;

[0025] The guide rod assembly 20 includes a guide rod 21, a guide rod sleeve, an elastic member 24 and an adjusting member 25. The inside of the guide rod sleeve is hollow, the guide rod 21 is arranged inside the guide rod sleeve, and the guide rod 21 is movably connected to the guide rod sleeve. Both the elastic member 24 and the adjusting member 25 are arranged on the guide rod 21. One end of the elastic member 24 abuts against the guide rod sleeve, and the other end of the elastic member 24 abuts against the adjusting member 25. The jaws 31 are connected to the end of the guide rod 21 away from the adjusting member 25. The guide rod sleeve and the guide rod 21 can move along the axial direction of the guide rod 21, so that the jaws 31 generate a pressure acting on the battery cell. The adjusting member 25 can adjust the pressure exerted by the jaws 31 on the battery cell through the elastic member 24. Thus, in this embodiment, by arranging an elastic member and an adjusting member on the guide rod, the guide rod sleeve and the guide rod can move along the axial direction of the guide rod, so that the elastic member generates a pressure acting on the guide rod sleeve. The guide rod sleeve is movably connected to the guide rod, and the guide rod sleeve acts on the guide rod with this pressure, and the guide rod acts on the jaws connected to it with this pressure, so that the jaws generate a pressure acting on the battery cell to shape the battery cell. And the pressure exerted by the jaws on the battery cell can be adjusted through the adjusting member, so that the pressure during the battery cell shaping process can be adjusted, which is beneficial to improving the consistency during the battery cell shaping process and the accuracy of the battery cell diameter detection, and avoiding the problem that the battery cell is difficult to enter the shell.

[0026] Based on the above embodiments, as an alternative embodiment, the guide rod sleeve includes a first guide rod sleeve 22 and a second guide rod sleeve 23. The first guide rod sleeve 22 and the second guide rod sleeve 23 are arranged along the axial direction of the guide rod 21, and there is a preset distance between the first guide rod sleeve 22 and the second guide rod sleeve 23. The first guide rod sleeve 22 abuts against the elastic member 24, and the second guide rod sleeve 23 is fixedly arranged on the mounting plate 10. Both the first guide rod sleeve 22 and the second guide rod sleeve 23 are movably connected to the guide rod 21, and the guide rod 21 and the first guide rod sleeve 22 can move along the axial direction of the guide rod 21, and the guide rod 21 and the second guide rod sleeve 23 can move along the axial direction of the guide rod 21. Thus, the guide rod sleeve is designed in a split manner, and there is a preset distance between the first guide rod sleeve and the second guide rod sleeve, which can form an avoidance space to prevent interference when the first guide rod sleeve and the second guide rod sleeve move along the axial direction of the guide rod, affecting the adjustment effect of the adjusting member on the pressure exerted by the clamping jaw on the battery cell.

[0027] It should be noted that the preset distance between the first guide rod sleeve 22 and the second guide rod sleeve 23 in this embodiment is not specifically limited, and those skilled in the art can set it according to the actual situation.

[0028] Based on the above embodiments, as an alternative embodiment, the guide rod assembly 20 further includes a first cam bearing 26. The first cam bearing 26 is connected to the first guide rod sleeve 22, and the first cam bearing 26 can move along the axial direction of the guide rod 21 to drive the first guide rod sleeve 22 to move axially along the guide rod 21, so that the guide rod 21 and the first guide rod sleeve 22 move along the axial direction of the guide rod 21. Among them, the first cam bearing 26 can cooperate with an external cam. The external cam is provided with a motion track, and the first cam bearing 26 can move along this motion track, so that the first cam bearing 26 moves along the axial direction of the guide rod 21. Thus, by setting the first cam bearing 26, the battery cell shaping device can be connected to the external cam to realize the movement of the guide rod 21 and the first guide rod sleeve 22 along the axial direction of the guide rod 21.

[0029] On the basis of the above embodiments, as an alternative embodiment, the guide rod assembly 20 further includes a second cam bearing 27. A first adjustment hole 221 is formed in the first guide rod sleeve 22. The second cam bearing 27 is connected to the guide rod 21. The second cam bearing 27 can move axially along the guide rod 21 within the first adjustment hole 221. The aperture of the first adjustment hole 221 is larger than the diameter of the second cam bearing 27, and the first adjustment hole 221 can be set as a waist-shaped hole or an oval hole. Thus, the first guide rod sleeve 22 and the guide rod 21 can be movably connected through the first adjustment hole 221 and the second cam bearing 27. When the first cam bearing 26 drives the first guide rod sleeve 22 to move axially along the guide rod 21, the second cam bearing 27 can move within the first adjustment hole 221. When the second cam bearing 27 abuts against the side wall of the first guide rod sleeve 22, the first guide rod sleeve 22 can drive the guide rod 21 to move axially along its direction through the second cam bearing 27. At the same time, the first guide rod sleeve 22 can apply the pressure exerted by the elastic member 24 thereon to the guide rod 21, and act on the clamping jaw 31 through the guide rod 21 to generate a pressure on the battery cell.

[0030] On the basis of the above embodiments, as an alternative embodiment, the guide rod assembly 20 further includes a third cam bearing 28. A second adjustment hole 231 is formed in the second guide rod sleeve 23. The third cam bearing 28 is connected to the guide rod 21. The third cam bearing 28 can move axially along the guide rod 21 within the second adjustment hole 231. The aperture of the second adjustment hole 231 is larger than the diameter of the third cam bearing 28, and the second adjustment hole 231 can be set as a waist-shaped hole or an oval hole. Thus, the third cam bearing 28 and the second guide rod sleeve 23 can play a guiding role, so that the relative movement between the guide rod 21 and the first guide rod sleeve 22 is in the axial direction of the guide rod 21, preventing the guide rod 21 and the first guide rod sleeve 22 from rotating.

[0031] On the basis of the above embodiments, as an alternative embodiment, the adjusting member 25 can move relative to the guide rod 21 and can be locked with the guide rod 21 to adjust the elastic force of the elastic member 24. Specifically, the adjusting member 25 can move along the guide rod 21 to the locking position. One end of the guide rod 21 passing through the adjusting member 25 can be set as a threaded member. A threaded hole can be provided on the adjusting member 25. By passing the threaded member through the threaded hole, the adjusting member 25 can be locked with the guide rod 21 to adjust the elastic force of the elastic member 24, thereby adjusting the pressure exerted by the clamping jaw 31 on the battery cell. As an alternative embodiment, the elastic member 24 can be a compression spring.

[0032] Based on the above embodiments, as an alternative embodiment, the jaw assembly 30 further includes a jaw cylinder 32. The jaw cylinder 32 is fixedly installed on the mounting plate 10 and is used to open or close the jaws 31. Thus, when the jaw cylinder 32 opens the jaws 31, the jaws 31 can release the battery cell, and when the jaw cylinder 32 closes the jaws 31, the jaws 31 can clamp the battery cell to facilitate the shaping of the battery cell. As an alternative embodiment, the jaws 31 are three-jaw jaws. The three-jaw jaws have three jaw parts, and the three jaw parts are evenly distributed along the circumferential direction of the guide rod assembly 20. In this embodiment, the specific structure of the three-jaw jaws is not further described. Those skilled in the art can select the commonly used three-jaw jaw structure in the art.

[0033] The working principle of the battery cell shaping device in this embodiment will be described below in conjunction with Figure 1 :

[0034] After the jaws 31 clamp the battery cell, the first cam bearing 26 moves along the movement track on the external cam, causing the first cam bearing 26 to move along the axial direction of the guide rod 21. The first cam bearing 26 drives the first guide rod sleeve 22 to move along the axial direction of the guide rod 21, causing the guide rod 21 and the first guide rod sleeve 22 to move along the axial direction of the guide rod 21. At this time, the second cam bearing 27 moves in the first adjustment hole 221. When the second cam bearing 27 moves to abut against the side wall of the first guide rod sleeve 22, the first guide rod sleeve 22 drives the guide rod 21 to move along its axial direction through the second cam bearing 27. At the same time, the first guide rod sleeve 22 can apply the pressure exerted by the elastic member 24 on it to the guide rod 21, so that the jaws 31 are pressed against the battery cell and the battery cell is shaped. And by adjusting the position of the adjusting member 25 on the guide rod 21, the elastic force of the elastic member 24 can be adjusted, thereby adjusting the pressure magnitude during the shaping of the battery cell by the jaws 31.

[0035] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Without departing from the spirit and scope of the present disclosure, those skilled in the art can make various changes and modifications, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A battery cell shaping device, characterized in that: include: A mounting plate and a guide rod assembly and a clamping claw assembly disposed on the mounting plate; The clamp assembly includes a clamp, and the clamp is used to shape the battery core; The guide rod assembly includes a guide rod, a guide rod sleeve, an elastic member and an adjusting member. The guide rod is arranged inside the guide rod sleeve. The guide rod and the guide rod sleeve are movably connected. The elastic member and the adjusting member are both arranged on the guide rod. One end of the elastic member abuts against the guide rod sleeve, and the other end of the elastic member abuts against the adjusting member. The clamp is connected to an end of the guide rod away from the adjusting member. The guide rod sleeve and the guide rod can generate movement along the axial direction of the guide rod so that the clamp generates pressure on the battery cell. The adjusting member can adjust the pressure of the clamp on the battery cell through the elastic member.

2. The battery cell shaping device according to claim 1, characterized in that: The guide rod sleeve includes a first guide rod sleeve and a second guide rod sleeve, the first guide rod sleeve and the second guide rod sleeve are arranged along the axial direction of the guide rod, and there is a preset distance between the first guide rod sleeve and the second guide rod sleeve, the first guide rod sleeve abuts against the elastic member, the second guide rod sleeve is fixedly arranged on the mounting plate, and the first guide rod sleeve and the second guide rod sleeve are both movably connected to the guide rod.

3. The battery cell shaping device according to claim 2, characterized in that: The guide rod assembly also includes a first cam bearing, which is connected to the first guide rod sleeve and can move along the axial direction of the guide rod, so that the guide rod and the first guide rod sleeve move along the axial direction of the guide rod.

4. The battery cell shaping device according to claim 2, characterized in that: The guide rod assembly also includes a second cam bearing. The first guide rod sleeve is provided with a first adjustment hole. The second cam bearing is connected to the guide rod. The second cam bearing can move in the first adjustment hole along the axial direction of the guide rod.

5. The battery cell shaping device according to claim 4, characterized in that: The guide rod assembly also includes a third cam bearing. The second guide rod sleeve is provided with a second adjustment hole. The third cam bearing is connected to the guide rod. The third cam bearing can move in the second adjustment hole along the axial direction of the guide rod.

6. The battery cell shaping device according to claim 5, characterized in that: The first adjustment hole is a waist-shaped hole or an elliptical hole, and / or the second adjustment hole is a waist-shaped hole or an elliptical hole.

7. The battery cell shaping device according to claim 1, characterized in that: The adjusting member can move relative to the guide rod and can be locked with the guide rod to adjust the elastic force of the elastic member.

8. The battery cell shaping device according to claim 1, characterized in that: The clamping jaw assembly further comprises a clamping jaw cylinder, which is used to open or close the clamping jaw, and the clamping jaw cylinder is fixed to the mounting plate.

9. The battery cell shaping device according to claim 1, characterized in that: The clamp is a three-jaw clamp.

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