Battery cell clamping device

Abstract

The utility model relates to a battery cell clamping device which comprises a first clamping assembly, a second clamping assembly and a transmission assembly, the first clamping assembly and the second clamping assembly are oppositely arranged in the first direction and tend to face each other. The transmission assembly comprises a transmission shaft, a rotating arm, a first transmission arm and a second transmission arm, the transmission shaft is arranged in the second direction, and the rotating arm rotates around the axis of the transmission shaft; the first end of the first transmission arm is connected with the rotating arm in a swinging plane in a swinging mode, the second end of the first transmission arm is connected with the first clamping assembly in the swinging plane in a swinging mode, the third end of the second transmission arm is connected with the rotating arm in the swinging plane in a swinging mode, and the fourth end of the second transmission arm is connected with the second clamping assembly in the swinging plane in a swinging mode. The second direction is perpendicular to the swing plane; when the rotating arm rotates to a set position, the first clamping assembly and the second clamping assembly move back to back to a preset distance. By arranging the battery cell clamping device, the battery cell can be clamped and fixed when the pole piece is detected, and the detection precision of the battery cell is improved.

Description

Technical Field

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

[0002] In the production process of lithium batteries, the alignment of the pole pieces needs to be detected to determine the state of the pole pieces; therefore, the reliability of the pole piece alignment detection equipment is extremely important. The measurement principle is to use a certain amount of radiation to penetrate the pole core, and to determine the alignment of the pole piece from the amount of loss after the radiation penetrates the pole core. The battery cell clamping device usually has a great influence on the detection structure. The existing battery cell clamping device directly uses a block to limit the four corners of the battery cell. The distance between the block and the battery cell is 0.5mm on one side, which causes the battery cell to shake during the detection process, thereby affecting the detection accuracy. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved battery core clamping device.

[0004] The technical solution adopted by the utility model to solve the technical problem is: constructing a battery core clamping device, including a first clamping component, a second clamping component and a transmission component;

[0005] The first clamping assembly and the second clamping assembly are arranged opposite to each other in a first direction and have a tendency to move toward each other;

[0006] The transmission assembly comprises a transmission shaft, a rotating arm, a first transmission arm and a second transmission arm, the transmission shaft is arranged along the second direction, and the rotating arm rotates around the axis of the transmission shaft;

[0007] The first transmission arm comprises a first end and a second end which are arranged opposite to each other, the first end is swung in a swing plane to connect to the rotating arm, the second end is swung in the swing plane to connect to the first clamping assembly, the second transmission arm comprises a third end and a fourth end which are arranged opposite to each other, the third end is swung in the swing plane to connect to the rotating arm, the fourth end is swung in the swing plane to connect to the second clamping assembly, and the second direction is perpendicular to the swing plane;

[0008] When the first clamping assembly and the second clamping assembly rotate to a set position, the first clamping assembly and the second clamping assembly move away from each other along the first direction to a preset distance.

[0009] In some embodiments, the battery cell clamping device further includes a mounting plate, the mounting plate is sleeved on the transmission shaft and is rotatably arranged around the axis of the transmission shaft; the first direction is the length direction of the mounting plate; the second direction is the thickness direction of the mounting plate;

[0010] The first clamping assembly and the second clamping assembly are connected to the mounting plate in a relatively slidable manner.

[0011] In some embodiments, the transmission assembly further includes a first guide mechanism, which is arranged in the first direction and connected to the first clamping assembly;

[0012] The transmission assembly further includes a second guiding mechanism, which is arranged in the first direction and connected to the second clamping assembly.

[0013] In some embodiments, the first guide mechanism includes a first guide rail and a first slider; the first guide rail extends along the first direction, and the first slider is sleeved on the first guide rail and connected to the first clamping assembly;

[0014] The second guiding mechanism includes a second guide rail and a second sliding block; the second guide rail is arranged along the first direction; the second sliding block is sleeved on the second guide rail and connected to the second clamping assembly.

[0015] In some embodiments, the battery cell clamping device also includes an elastic member extending in the first direction, and both ends of the elastic member can be respectively connected to the first clamping component and the second clamping component, so that the first clamping component and the second clamping component always have a tendency to move toward each other along the first direction.

[0016] In some embodiments, the battery cell clamping device further includes a driving assembly, wherein the driving assembly includes a driving motor and a first driving wheel disposed on an output shaft of the driving motor;

[0017] The driving motor drives the first clamping assembly and the second clamping assembly to rotate synchronously through the first driving wheel, and the transmission shaft rotates around its axis and is connected to the first driving wheel.

[0018] In some embodiments, the rotating arm includes a rotating part and a limiting part; the rotating part is sleeved on the transmission shaft, one end of the limiting part is connected to the rotating part, and the other end extends toward the outer periphery of the first driving wheel and is sleeved with a bearing;

[0019] The battery cell clamping device also includes a positioning structure, which is arranged in the radial direction of the first driving wheel. When the first clamping assembly and the second clamping assembly rotate to the set position, the bearing abuts against the positioning structure to enable the first clamping assembly and the second clamping assembly to move away from each other along the first direction to a preset distance.

[0020] In some embodiments, the drive assembly further includes a fixing seat;

[0021] The first driving wheel has a rotating shaft connected to the output shaft of the driving motor, and the fixing seat is sleeved on the rotating shaft and connected to the transmission shaft.

[0022] The driving assembly further comprises a bearing limiting structure, wherein the bearing limiting structure is at least partially accommodated on the fixing seat, and the bearing limiting structure is coaxially arranged with the fixing seat and has an interference fit.

[0023] In some embodiments, the battery cell clamping device further includes an angle detection structure.

[0024] In some embodiments, it also includes a support plate for carrying the battery cell;

[0025] The support plate is installed on the installation plate and is arranged between the first clamping component and the second clamping component.

[0026] The implementation of the battery cell clamping device of the utility model has the following beneficial effects: the battery cell clamping device drives the two clamping components to rotate through the driving component, thereby driving the battery cell clamped between the two clamping components to rotate for detection such as alignment, and when the first clamping component and the second clamping component rotate to the set position, the bearing and the positioning structure abut to limit the rotation of the rotating arm, the first clamping component and the second clamping component overcome the elastic force of the elastic member and move in opposite directions along the first direction to a preset distance for loading operations, and during the opening of the two clamping components, the first transmission arm and the second transmission arm swing in the swing plane to maintain the stability of the two clamping components moving along the first direction through the transmission component. By setting up the battery cell clamping device, the battery cell can be clamped and fixed when the pole piece is detected, and when the battery cell is driven to rotate, it is ensured that the battery cell does not shake during the detection process, effectively improving the accuracy of battery cell detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0028] Figure 1 It is a schematic diagram of the structure of the battery cell clamping device in some embodiments of the utility model;

[0029] Figure 2 yes Figure 1 A schematic diagram of the structural decomposition of the battery cell clamping device shown;

[0030] Figure 3 yes Figure 1 Schematic diagram of the state of the battery cell clamping device clamping the battery cell;

[0031] Figure 4 yes Figure 3 A schematic diagram showing the positions of the first transmission arm and the second transmission arm when the battery cell clamping device is in a clamping state;

[0032] Figure 5 yes Figure 1 Schematic diagram of the state where the battery cell clamping device is released and the battery cell is released;

[0033] Figure 6 yes Figure 3 A schematic diagram of the positions of the first transmission arm and the second transmission arm when the battery cell clamping device is in an open state is shown. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution, and do not indicate that the devices or elements referred to must have specific directions, and therefore cannot be understood as limitations on the present invention.

[0035] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "fixation", "setting" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0036] Figure 1 and Figure 2 Some preferred embodiments of the battery cell clamping device of the utility model are shown. The battery cell clamping device can be used to clamp and fix the battery cell 100 when detecting the alignment of the pole pieces of the battery cell 100 to prevent the battery cell 100 from shaking, thereby ensuring the detection accuracy of the pole piece alignment detection device.

[0037] like Figure 1 and Figure 2As shown, in some embodiments, the battery cell clamping device may include a bracket 10, a first clamping assembly 20, a second clamping assembly 30, a mounting plate 40, a transmission assembly 50 and a drive assembly 60. The bracket 10 is used to support the battery cell 100. The first clamping assembly 20 and the second clamping assembly 30 are arranged relatively in the first direction, specifically arranged on two opposite sides of the bracket 10, and the two can be relatively slidably connected to the mounting plate 40, and always have a relative movement trend, cooperate with each other, and with the synchronous rotation of the bracket 10, the first clamping assembly 20, the second clamping assembly 30 and the mounting plate 40, the battery cell 100 is clamped or released. The first direction here is the length direction of the mounting plate 40. The mounting plate 40 can be used for the bracket 10 to be installed. The transmission assembly 50 is connected to the first clamping assembly 20 and the second clamping assembly 30 to transmit under the drive of the drive assembly 60. The driving assembly 60 is connected to the transmission assembly 50 and is used to drive the transmission assembly 50 to transmit, thereby driving the first clamping assembly 20 and the second clamping assembly 30 to perform clamping or releasing actions.

[0038] In some embodiments, the bracket 10 may include a support plate 11 and support columns 12, and the support plate 11 may be a square plate. Specifically, the support plate 11 may be a metal plate. The battery cell 100 to be tested may be placed on the support plate 11, and both ends may extend from two opposite sides of the support plate 11. There may be four support columns 12, and the four support columns 12 may be spaced apart on a side of the support plate 11 that is opposite to its supporting surface, and are arranged corresponding to the four vertex corners of the support plate 11. The support plate 11 may have a plurality of pin positions, which facilitates the debugging of the battery cell clamping device and rapid positioning to achieve the purpose of rapid changeover. Each support column 12 may be inserted into the mounting plate 40, so that the support plate 11 is mounted on the mounting plate 40.

[0039] In some embodiments, the first clamping assembly 20 may include a first clamping jaw 21 and a first support plate 22. The first clamping jaw 21 is mounted on the first support plate 22. The first clamping jaw 21 may include a first connecting portion 211 and a first clamping portion 212. The first connecting portion 211 is connected and fixed to the first support plate 22. The first clamping portion 212 is disposed at one end of the first connecting portion 211, and extends in a direction perpendicular to the first connecting portion 211 and is disposed higher than the support plate 11. The first clamping portion 212 and the first connecting portion 211 may be integrally formed.

[0040] In some embodiments, the second clamping assembly 30 may include a second clamping jaw 31 and a second support plate 32. The second clamping jaw 31 is mounted on the second support plate 32. The second clamping jaw 31 may include a second connecting portion 311 and a second clamping portion 312. The second connecting portion 311 is connected and fixed to the second support plate 32. The second clamping portion 312 is disposed at one end of the second connecting portion 311, and extends in a direction perpendicular to the second connecting portion 311 and is disposed higher than the support plate 11. The second clamping portion 312 and the second connecting portion 311 may be integrally formed. The second clamping portion 312 may be disposed opposite to the first clamping portion 212, and the two may cooperate to clamp the battery cell 100 placed on the support plate 11.

[0041] In some embodiments, the mounting plate 40 may be a metal plate, which may be arranged longitudinally. Specifically, the cross section of the mounting plate 40 may be roughly rectangular. The mounting plate 40 is provided with a first guide groove 41 and a second guide groove 42, which may be arranged at intervals along the length direction of the mounting plate 40 on a side of the mounting plate 40 facing the support plate 11. There may be two first guide grooves 41 and two second guide grooves 42. The two first guide grooves 41 may be arranged at intervals along the width direction of the mounting plate 40, and the two second guide grooves 42 may be arranged at intervals along the width direction of the mounting plate 40. The thickness direction of the mounting plate 40 is the second direction.

[0042] In some embodiments, the transmission assembly 50 is mounted on the mounting plate 40 and is located at the center of the mounting plate 40. In some embodiments, the transmission assembly 50 may include a transmission shaft 51, a bearing 52, a rotating arm 53, a first transmission arm 54, and a second transmission arm 55.

[0043] The transmission shaft 51 is arranged on the mounting plate 40 along the second direction and is located at the center of the mounting plate 40. The rotating arm 53 is sleeved on the transmission shaft 51 and can be driven to rotate by the rotation of the transmission shaft 51. The rotating arm 53 can be interference fit with the transmission shaft 51, thereby reducing assembly errors and tolerance chains.

[0044] The rotating arm 53 can rotate around the axis of the transmission shaft 51. In some embodiments, the rotating arm 53 may include a rotating portion 531 and a limiting portion 532. The rotating portion 531 may be in the shape of a plate. Specifically, the rotating portion 531 may be in the shape of a rectangular plate, and a connecting hole 5310 for connecting with the transmission shaft 51 is provided at the axis thereof. An extension portion 5311 is provided at one end of the rotating portion 531. One end of the limiting portion 532 is connected to the extension portion 5311 of the rotating portion 531, and the other end extends along the second direction and is located toward the outer periphery of the driving assembly 60 and is sleeved with a bearing 52. The rotation of the transmission shaft 51 drives the rotating portion 531 to rotate.

[0045] The first transmission arm 54 and the second transmission arm 55 are respectively connected to the rotating arm 53 in a swinging manner to form a connecting rod structure. Specifically, the first transmission arm 54 and the second transmission arm 55 can be respectively connected to the two opposite sides of the connecting hole 5310, and can be connected to the rotating part 531 by rotating the shaft structure, so as to achieve a swing connection. When the transmission shaft 51 rotates, the rotating arm 53 can be driven to rotate, thereby driving the first transmission arm 54 and the second transmission arm 55 to swing in the swing plane. In some embodiments, the first transmission arm 54 may include a first end 54a and a second end 54b arranged opposite to each other; the first end 54a is connected to the rotating arm 53 in a swinging manner in the swinging plane, and the second end 54b is connected to the first clamping assembly in a swinging manner in the swinging plane. The second transmission arm 55 may include a third end 55a and a fourth end 55b arranged opposite to each other; wherein the third end 55a is connected to the rotating arm 53 in a swinging manner in the swinging plane, and the fourth end 55b is connected to the second clamping assembly 30 in a swinging manner in the swinging plane. The second direction may be perpendicular to the swinging plane.

[0046] In some embodiments, the battery cell clamping device further includes a first guide mechanism, which can be arranged in the first direction and connected to the first clamping assembly 20 to guide the first clamping assembly 20 to move in the first direction. The first guide mechanism may include a first guide rail 56 and a first slider 57. There may be two first guide rails 56, which are arranged on the mounting plate 40 at intervals along the width direction of the mounting plate 40, and each first guide rail 56 may be connected to the first transmission arm 54. Each first guide rail 56 may extend along the first direction and may be placed in the first guide groove 41 to be guided by the first guide groove 41. There may be two first sliders 57, each first slider 57 may be sleeved on a first guide rail 56 and may be connected to the first clamping assembly 20, specifically, it may be connected to the first connecting portion 211 of the first clamping assembly 20. In some other embodiments, the first guide mechanism may not be limited to including the first guide rail 56 and the first slider 57. The first guide mechanism may also be a slide groove.

[0047] In some embodiments, the battery cell clamping device further includes a second guide mechanism, which can be arranged in the first direction and connected to the second clamping assembly 30 to guide the second clamping assembly 30 to move in the second direction. The second guide mechanism includes a second guide rail 58 and a second slider 59. There can be two second guide rails 58, which are arranged at intervals along the width direction of the mounting plate 40, and each second guide rail 58 can be connected to the second transmission arm 55, and each second guide rail 58 can extend along the first direction and can be placed in the second guide groove 42 to be guided by the second guide groove 42. There can be two second sliders 59, each second slider 59 can be sleeved on the second guide rail 58 and connected to the second clamping assembly 30, specifically, it can be connected to the second connecting portion 311 of the second clamping assembly 30. In some other embodiments, the second guide mechanism is not limited to including the second guide rail 58 and the second slider 59. The second guide mechanism can be a slide groove.

[0048] In some embodiments, the drive motor drives the mounting plate 40 and the components mounted on the mounting plate 40 to rotate synchronously through the drive assembly 60, and the transmission shaft 51 rotates around its axis to connect the first drive wheel 61. In some embodiments, the drive assembly 60 may include a drive motor, a first drive wheel 61, a fixing seat 62, and a bearing limiting structure 63.

[0049] The output shaft of the driving motor is connected to the first driving wheel 61, and is used to drive the first driving wheel 61 to rotate. In this case, the first driving wheel 61 is a driving wheel. In some embodiments, the first driving wheel 61 can be a synchronous wheel, and the output shaft of the driving motor is connected to the second driving wheel, and the second driving wheel is connected to the first driving wheel 61 through a belt transmission. In this case, the second driving wheel is a driving wheel. The first driving wheel 61 has a rotating shaft 611, and the rotating shaft 611 is located at the center axis of the first driving wheel 61, and it can rotate with the rotating shaft 611 as the axis under the drive of the driving motor.

[0050] The fixed seat 62 can be sleeved on the rotating shaft 611. In some embodiments, the fixed seat 62 may include a first seat body 62a and a second seat body 62b; the first seat body 62a can be embedded in the first driving wheel 61 and sleeved on the rotating shaft 611. In some embodiments, the first seat body 62a can be roughly cylindrical. The second seat body 62b is arranged on the first seat body 62a and is coaxially arranged with the first seat body 62a. The second seat body 62b is roughly plate-shaped, and its cross-sectional dimension is larger than the cross-sectional dimension of the first seat body 62a. In some embodiments, a receiving groove 621 can be provided at the central axis of the second seat body 62b, and the receiving groove 621 can be used to accommodate the bearing limiting structure 63 therein, thereby improving the coaxiality of the fixed seat 62 and the transmission shaft.

[0051] In some embodiments, the bearing limiting structure 63 is at least partially accommodated on the fixed seat 62 and is coaxially arranged with the fixed seat 62. In some embodiments, the bearing limiting structure 63 can be embedded in the accommodating groove 621, can be interference fit with the fixed seat 62, and can be matched with the bearing 52. The bearing limiting structure 63 can be partially embedded in the bearing 52 and connected to the bearing 52. By interference fitting the bearing limiting structure 63 with the fixed seat 62, the transmission efficiency can be guaranteed and the introduction of new errors can be avoided. The interference fit is to reduce the gap caused by the processing error, and the interference fit can also avoid the influence of small dimensional changes caused by thermal expansion and contraction and wear of the material due to long-term movement. In some other embodiments, the bearing limiting structure 63 can be integrally formed with the fixed seat 62.

[0052] In some embodiments, the battery cell clamping device further includes a bracket 70, which can be used for the installation and support of the first driving wheel 61. In some embodiments, the bracket 70 can be roughly strip-shaped, and can be a strip-shaped plate. In some embodiments, a limit plate 71 and a fixed plate 72 are provided on the bracket 70, and the limit plate 71 and the fixed plate 72 are both extended toward the mounting plate 40, wherein the limit plate 71 is arranged toward the fixed plate 72, and is arranged adjacent to the fixed plate 72, for preventing the entire battery cell clamping device from rotating overshoot. The fixed plate 72 can be used to fix the angle detection structure 80.

[0053] In some embodiments, the battery cell clamping device further includes an angle detection structure 80, which is disposed on one side of the first driving wheel 61 and located on the fixing plate 72, and can be used to detect the angle of rotation of the mounting plate 40, to ensure that the angle of rotation of the mounting plate 40 each time can meet the design requirements, and can ensure that the mounting plate 40 is rotated to a suitable position through the angle detection structure 80, so that the first clamping assembly 20 and the second clamping assembly 30 are opened to a certain distance for loading operations. In some embodiments, the angle detection structure 80 can be a fiber optic sensor. In some other embodiments, the angle detection structure 80 is not limited to a fiber optic sensor.

[0054] In some embodiments, the battery cell clamping device further includes a positioning structure 90, which is arranged on one side of the first driving wheel 61 and is located in the radial direction of the first driving wheel 61. When the first clamping assembly 20 and the second clamping assembly 30 rotate to a set position, the bearing 52 abuts the positioning structure 90, so that the first clamping assembly 20 and the second clamping assembly 30 move away from each other in the first direction to a preset distance. The positioning structure 90 can be arranged on the bracket 70 and can extend in a direction perpendicular to the bracket 70. In some embodiments, the positioning structure 90 can be a rectangular limit block, which can abut against the bearing 52 when the mounting plate 40 rotates to a specific angle, and push the two clamping assemblies to move away from each other in the first direction for a certain distance for loading operation. In this embodiment, the mounting plate 40 can be rotated to the corresponding specific angle and recorded as the upper and lower material positions. In some embodiments, a plurality of cut surfaces 622 can be arranged on the outer side wall of the second seat body 62b along the circumference of the second seat body 62b to avoid interference between the second seat body 62b and the positioning structure 90 during the rotation process.

[0055] In some embodiments, the battery cell clamping device also includes an elastic member, which is extended in a first direction, and its two ends can be respectively connected to the first clamping assembly 20 and the second clamping assembly 30. Due to the action of the elastic member, under normal working conditions, the rotating arm 53, the first transmission arm 54 and the second transmission arm 55 are in a relatively static state, and the two clamping assemblies are in a clamping state, that is, the two clamping assemblies are always in a clamping state when they are not in the upper and lower material positions, so that when the mounting plate 40 rotates outside the corresponding angle of the upper and lower material positions, it can constantly and stably clamp the battery cell for detection operations.

[0056] At the upper and lower material positions, the positioning structure 90 hard limits the contact with the bearing 52, so that the rotating arm 53 changes relative to the first transmission arm 54 and the second transmission arm 55, and then drives the first transmission arm 54 and the second transmission arm 55 to change in a linkage manner. The rotating arm 53 rotates to a set position, and the set position corresponds to the rotation of the mounting plate 40 to the upper and lower material positions. When the rotating arm 53 rotates to the set position, the first clamping assembly 20 and the second clamping assembly 30 move away from each other by a preset distance.

[0057] like Figures 3 to 6 As shown, the rotating arm 53 is in the initial position, and the first clamping jaw 21 and the second clamping jaw 31 are in a clamped state. The initial position is the corresponding position of the rotating arm 53 at the driving angle when the driving motor rotates 35° in the forward direction.

[0058] Start the driving motor of the driving assembly 60, and the driving motor rotates in the opposite direction at a first angle to drive the first driving wheel 61, the fixed seat 62, the bearing limiting structure 63, the mounting plate 40 and the components located on the mounting plate 40 to rotate in the opposite direction together. During the reverse rotation, the positioning structure 90 hard limits and abuts against the bearing 52, and the mounting plate 40 is located at the upper and lower material positions. The first clamping assembly 20 and the second clamping assembly 30 overcome the elastic force of the elastic member and open.

[0059] During the opening process, the position of the rotating arm 53 relative to the mounting plate 40 changes, and then the first transmission arm 54 and the second transmission arm 55 swing relative to the rotating arm 53, the first clamping assembly 20 and the second clamping assembly 30 to maintain the stability of the opening. The first clamping assembly 20 moves away from the support plate 11 along the first direction in cooperation with the first slider 57 and the first guide rail 56, and the second clamping assembly 30 moves away from the support plate 11 along the first direction in cooperation with the second slider 59 and the second guide rail 58, and then cooperates to perform a loosening action to loosen the two clamping assemblies for loading and unloading of the battery cell 100. The first angle can be 35°. The set position can be the corresponding position of the first transmission arm 54 and the second transmission arm 55 at the driving angle when the driving motor rotates in the opposite direction by 35°. The driving motor rotates in the opposite direction to 35°, the first clamping jaw 21 and the second clamping jaw 31 move away from the support plate 11, and the first clamping jaw 21 and the second clamping jaw 31 open, and then the battery cell can be loaded and unloaded by equipment such as a manipulator.

[0060] The driving motor then rotates in the positive direction by a second angle to drive the first driving wheel 61 , the fixing seat 62 , the bearing limiting structure 63 , the mounting plate 40 and the components located on the mounting plate 40 to rotate together.

[0061] During the forward rotation, the positioning structure 90 releases the hard limit abutment with the bearing 52, and the mounting plate 40 rotates away from the upper and lower material positions. Since the hard limit abutment between the positioning structure 90 and the bearing 52 is released, the first clamping assembly 20 and the second clamping assembly 30 resume clamping under the elastic force of the elastic member.

[0062] During the process of recovering from opening to clamping, the position of the rotating arm 53 relative to the mounting plate 40 changes, and then the first transmission arm 54 and the second transmission arm 55 swing relative to the rotating arm 53, the first clamping assembly 20 and the second clamping assembly 30 to maintain stability during the process of recovering from opening to clamping.

[0063] The first clamping assembly 20 moves in the first direction close to the support plate 11 under the cooperation of the first slider 57 and the first guide rail 56, and the second clamping assembly 30 moves in the second direction close to the support plate 11 under the cooperation of the second slider 59 and the second guide rail 58, and then cooperates to perform a clamping action to clamp the battery cell 100. Under the cooperation of the first slider 57 and the first guide rail 56, and the second slider 59 and the second guide rail 58, the first clamping jaw 21 and the second clamping jaw 31 are restored to the clamping state through the transmission assembly and the elastic member, thereby clamping the battery cell 100. The second angle can be 35°.

[0064] After clamping the battery cell, the drive motor can continue to rotate forward at multiple angles, thereby driving the first drive wheel 61, the fixed seat 62, the bearing limiting structure 63, the mounting plate 40 and the components located on the mounting plate 40 to rotate forward at multiple angles together, thereby rotating the battery cell to multiple angles while firmly clamping the battery cell for alignment and other detection operations.

[0065] It is understandable that, assuming that the first clamp 21 and the second clamp 31 are in an open state in the initial state, that is, the positioning structure 90 is hard-limited against the bearing 52 in the initial state, at this time, the driving motor rotates forward 35°, the first clamp 21 and the second clamp 31 can move forward 5mm, thereby clamping, and the driving motor rotates reversely 35° again, the first clamp 21 and the second clamp 31 can move backward 5mm, thereby opening again, and the first clamp 21 and the second clamp 31 can be clamped and opened cyclically by rotating the driving motor forward 35° and then reversely rotating 35° in the initial state, and the stability of the starting point of each rotation is also guaranteed (for example, when rotating 35°, the battery cell 100 is clamped and fixed; the rotation angle can be freely set, and the parameters are set according to actual conditions). The preset rotation angle is only to ensure that the battery cell 100 is clamped and fixed. When the battery cell 100 is replaced, the front and rear distances of the clamping jaws can be adjusted to achieve a clamping angle of 35° for switching between different models, thereby achieving a preset rotation angle to complete the clamping of the battery cells 100 of different models.

[0066] In some embodiments, after the rotating arm 53 returns to the initial position, the first jaw 21 and the second jaw 31 clamp the battery cell 100, and then drive the drive motor forward as needed to perform operations such as alignment detection on each corner of the battery cell. After completion, the drive motor reverses 65°, the entire machine returns to the upper and lower material positions, and releases the battery cell 100.

[0067] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. A battery cell clamping device, characterized in that: It comprises a first clamping assembly (20), a second clamping assembly (30) and a transmission assembly (50); The first clamping assembly (20) and the second clamping assembly (30) are arranged opposite to each other in a first direction and have a tendency to move towards each other; The transmission assembly (50) comprises a transmission shaft (51), a rotating arm (53), a first transmission arm (54) and a second transmission arm (55); the transmission shaft (51) is arranged along the second direction, and the rotating arm (53) rotates around the axis of the transmission shaft (51); The first transmission arm (54) comprises a first end (54a) and a second end (54b) which are arranged opposite to each other, the first end (54a) is swung in a swing plane to be connected to the rotating arm (53), and the second end (54b) is swung in the swing plane to be connected to the first clamping assembly (20), the second transmission arm (55) comprises a third end (55a) and a fourth end (55b) which are arranged opposite to each other, the third end (55a) is swung in the swing plane to be connected to the rotating arm (53), and the fourth end (55b) is swung in the swing plane to be connected to the second clamping assembly (30), and the second direction is perpendicular to the swing plane; When the first clamping assembly (20) and the second clamping assembly (30) are rotated to a set position, the first clamping assembly (20) and the second clamping assembly (30) move away from each other along the first direction to a preset distance.

2. The battery cell clamping device according to claim 1, characterized in that: The battery cell clamping device further comprises a mounting plate (40), wherein the mounting plate (40) is sleeved on the transmission shaft (51) and is rotatably arranged around the axis of the transmission shaft (51); the first direction is the length direction of the mounting plate (40); and the second direction is the thickness direction of the mounting plate (40); The first clamping assembly (20) and the second clamping assembly (30) are connected to the mounting plate (40) in a relatively slidable manner.

3. The battery cell clamping device according to claim 1, characterized in that: The transmission assembly (50) further comprises a first guiding mechanism, wherein the first guiding mechanism is arranged in the first direction and connected to the first clamping assembly (20); The transmission assembly (50) further comprises a second guiding mechanism, wherein the second guiding mechanism is arranged in the first direction and is connected to the second clamping assembly (30).

4. The battery cell clamping device according to claim 3, characterized in that: The first guide mechanism comprises a first guide rail (56) and a first sliding block (57); the first guide rail (56) extends along the first direction, and the first sliding block (57) is sleeved on the first guide rail (56) and connected to the first clamping assembly (20); The second guide mechanism comprises a second guide rail (58) and a second slide block (59); the second guide rail (58) is arranged along the first direction; the second slide block (59) is sleeved on the second guide rail (58) and connected to the second clamping assembly (30).

5. The battery cell clamping device according to claim 1, characterized in that: The battery cell clamping device further comprises an elastic member extending in the first direction, and two ends of the elastic member can be respectively connected to the first clamping assembly (20) and the second clamping assembly (30), so that the first clamping assembly (20) and the second clamping assembly (30) always have a tendency to move towards each other along the first direction.

6. The battery cell clamping device according to claim 1, characterized in that: The battery cell clamping device further comprises a driving assembly (60), wherein the driving assembly (60) comprises a driving motor and a first driving wheel (61) arranged on an output shaft of the driving motor; The driving motor drives the first clamping assembly (20) and the second clamping assembly (30) to rotate synchronously via the first driving wheel (61), and the transmission shaft (51) is rotatably connected to the first driving wheel (61) around its axis.

7. The battery cell clamping device according to claim 6, characterized in that: The rotating arm (53) comprises a rotating part (531) and a limiting part (532); the rotating part (531) is sleeved on the transmission shaft (51); one end of the limiting part (532) is connected to the rotating part (531), and the other end is sleeved with a bearing (52) along the second direction; The battery cell clamping device further comprises a positioning structure (90), wherein the positioning structure (90) is arranged in the radial direction of the first driving wheel (61), and when the first clamping assembly (20) and the second clamping assembly (30) rotate to the set position, the bearing (52) abuts against the positioning structure (90), so that the first clamping assembly (20) and the second clamping assembly (30) move away from each other along the first direction to a preset distance.

8. The battery cell clamping device according to claim 6, characterized in that: The driving assembly (60) further includes a fixing seat (62); The first driving wheel (61) has a rotating shaft connected to the output shaft of the driving motor, and the fixing seat (62) is sleeved on the rotating shaft and connected to the transmission shaft (51); The drive assembly (60) further comprises a bearing limiting structure (63), wherein the bearing limiting structure (63) is at least partially accommodated on the fixing seat (62), and the bearing limiting structure (63) and the fixing seat (62) are coaxially arranged and have an interference fit.

9. The battery cell clamping device according to claim 6, characterized in that: The battery cell clamping device also includes an angle detection structure (80).

10. The battery cell clamping device according to claim 2, characterized in that: Also included is a support plate (11) for carrying the battery cell; The support plate (11) is mounted on the mounting plate (40) and is arranged between the first clamping assembly (20) and the second clamping assembly (30).

Images