Foam pasting device for battery cell

Abstract

The invention discloses a foam pasting device for a battery cell. The foam pasting device comprises a rotating assembly and a material taking and placing variable-pitch assembly, the rotating assembly is connected with the material taking and placing variable-pitch assembly; the rotating assembly is used for driving the material taking and placing variable-pitch assembly to move between a preset first position and a preset second position; and the material taking and placing variable-pitch assembly is used for sucking a plurality of pieces of side-by-side linear foams at a preset first position, performing variable-pitch operation on the plurality of pieces of linear foams after reaching a preset second position, and then pasting the plurality of pieces of linear foams subjected to variable pitch on the side surface of the battery cell. According to the battery cell foam pasting device and the battery module assembly system, the design is scientific, the straight foam pasting operation can be efficiently and reliably carried out on the side face of the battery cell in the thickness direction, the working efficiency is remarkably improved, and the working cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery cell assembly, in particular to a device for pasting foam on a battery cell. BACKGROUND

[0002] Currently, for a battery module comprising a plurality of battery cells, a plurality of foams (usually one-dimensional foams, and the number can be four) need to be pasted on the two sides of each battery cell in the thickness direction (i.e. two large-area sides) before assembly. These foams are inter-battery cell buffer foams, which are pasted on the large surface of the battery cell, and are usually made of PU (polyurethane) material, used to absorb the thickness tolerance of the battery cell and the charging and discharging expansion force.

[0003] However, the existing traditional battery cell pasting one-dimensional foam device has an unreasonable structure design and low work efficiency, and cannot conveniently and reliably perform one-dimensional foam pasting operation on the side surface of the battery cell in the thickness direction.

[0004] Therefore, it is urgent to develop a technology that can solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to provide a device for pasting foam on a battery cell to solve the technical defects of the prior art.

[0006] To this end, the present application provides a device for pasting foam on a battery cell, which comprises a rotating assembly and a material taking and placing variable pitch assembly.

[0007] The rotating assembly is connected to the material taking and placing variable pitch assembly.

[0008] The rotating assembly is used to drive the material taking and placing variable pitch assembly to move between a preset first position and a preset second position.

[0009] The material taking and placing variable pitch assembly is used to take a plurality of one-dimensional foams side by side at the preset first position, perform a variable pitch operation on the plurality of one-dimensional foams after reaching the preset second position, and then paste the plurality of one-dimensional foams after variable pitch on the side surface of the battery cell.

[0010] As can be seen from the technical solutions provided by the present application, compared with the prior art, the present application provides a device for pasting foam on a battery cell. The device for pasting foam on a battery cell of the present application is a 90-degree material taking and placing variable pitch pasting foam structure, which is designed scientifically and can efficiently and reliably perform one-dimensional foam pasting operation on the side surface (i.e. large surface) of the battery cell (square battery cell) in the thickness direction. This significantly improves work efficiency and reduces work cost, and has great practical significance.

[0011] The rotating component used in this invention utilizes the principle of a planetary gear system and has undergone specialized structural design and development. The structure is reasonable and ingenious. The material loading and unloading pitch-changing component can directly attach four sheets of one-piece foam to the battery cell after pitch change, resulting in high efficiency. Attached Figure Description

[0012] Figure 1 A three-dimensional structural diagram of a foam attaching device for battery cells provided by the present invention during material handling;

[0013] Figure 2 A three-dimensional structural diagram of a foam attaching device for battery cells provided by the present invention during the feeding operation;

[0014] Figure 3 A schematic diagram of the rotating component in a foam attaching device for a battery cell provided by the present invention;

[0015] Figure 4 A schematic diagram of the material handling and feeding pitch variable component in a foam attaching device for battery cells provided by the present invention;

[0016] Figure 5 A schematic diagram of the pitch-changing mechanism in the material handling pitch-changing assembly of a battery cell foam attaching device provided by the present invention.

[0017] Figure 6 A top view of the pitch-changing mechanism of the material handling pitch-changing assembly in a foam attaching device for battery cells provided by the present invention.

[0018] Figure 7 This is a schematic diagram of the four sets of material handling mechanisms when the variable pitch is activated.

[0019] Figure 8 A schematic diagram of a single-line foam pad being attached to a battery cell;

[0020] Figure 9 A simplified schematic diagram of the motion of a rotating component in a foam attaching device for a battery cell provided by the present invention. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] See Figures 1 to 9 The present invention provides a foam attaching device for battery cells, which is a 90-degree material pick-up and drop-off variable distance foam attaching structure, including a rotating component 1 and a material pick-up and drop-off variable distance component 2;

[0026] Rotating component 1 is connected to material handling pitch control component 2;

[0027] Rotating component 1 is used to drive the material pick-up and unload pitch variable component 2 to move (can be a cyclic motion) between a preset first position and a preset second position (specifically between the material pick-up position and the material unload position);

[0028] The material pick-up and unload pitch-changing component 2 is used to pick up multiple (e.g., four) parallel straight foams 3 at a preset first position (e.g., the material pick-up position), and after reaching a preset second position (e.g., the material unload position), it performs a pitch-changing operation on the multiple straight foams 3 (i.e., changes the distance between any two adjacent straight foams), and then pastes the pitch-changing multiple straight foams 3 onto the side of the battery cell 4 (specifically, the side in the thickness direction of the battery cell, i.e., the large area side).

[0029] In this invention, specifically, the first position is preset as the material picking position; the material picking position is located at the upper right of the rotating component 1;

[0030] The second position is preset as the material feeding position; the material feeding position is located directly below the rotating component 1;

[0031] In specific implementation, in the initial state (i.e. when the device of the present invention is just started), the linear foam 3 is in the material picking position and the battery cell 4 is in the material discharging position.

[0032] In this invention, for specific implementation, see [link to relevant documentation]. Figure 3 and Figure 9 As shown, the rotating assembly 1 includes a first synchronous pulley 101, a second synchronous pulley 102, a synchronous belt 103, a rocker arm 104, a drive shaft 105, a driven shaft 106, a chuck 107, a motor 108, a coupling 109, a frame 110, and a tensioning pulley 111.

[0033] A motor 108 is installed on the rear side of the rear upright plate 1102 of the frame 110;

[0034] The output shaft on the front side of the motor 108 passes through the through hole reserved on the rear end plate of the frame 110 and is connected to the rear end of the drive shaft 105 through the coupling 109.

[0035] A first synchronous pulley 101 is fixedly installed on the front side of the front upright plate 1101 of the frame 110;

[0036] It should be noted that the middle section of the drive shaft 105 extends longitudinally through the central through hole reserved in the first synchronous pulley 101 (the drive shaft 105 is not connected to the first synchronous pulley 101, so the drive shaft 105 will not drive the first synchronous pulley 101 to rotate).

[0037] The drive shaft 105 longitudinally passes through the front end plate 1101 of the frame 110 (specifically, it passes through the inner ring of the bearing installed on the front end plate);

[0038] The front end of the drive shaft 105 is fixedly connected to one end of a rocker arm 104; therefore, when the drive shaft 105 rotates, it can drive the rocker arm 104 to rotate synchronously.

[0039] The other end of the lever 104 is pivotally (i.e. rotatably) connected to a driven shaft 106;

[0040] A second synchronous pulley 102 is fixedly installed at the rear end of the driven shaft 106;

[0041] The first synchronous pulley 101 and the second synchronous pulley 102 are connected by a synchronous belt 103;

[0042] The front end of the driven shaft 106 is fixedly connected to the rear end of the chuck 107.

[0043] In practice, the other end of the rocker arm 104 has a hole for a bearing, and the inner ring of the bearing has a driven shaft 106, which passes longitudinally through the inner ring of the bearing; that is, the driven shaft 106 is rotatably connected to the rocker arm 104 through the bearing.

[0044] In practice, rack 110 is mounted on an external mounting platform.

[0045] In practice, the center points of the first synchronous pulley 101 and the second synchronous pulley 102 are located on the same vertical plane.

[0046] It should be noted that both the first synchronous pulley 101 and the second synchronous pulley 102 are gears, which mesh with the synchronous belt 103.

[0047] In practice, the number of teeth on the first synchronous pulley 101 is twice the number of teeth on the second synchronous pulley 102.

[0048] It should be noted that the angular velocity of the first synchronous pulley 101 is specified as ω in this invention. a The number of teeth on the first synchronizing pulley 101 is Z. a The angular velocity of the second synchronous pulley 102 is ω b The second synchronous pulley 102 has Z teeth. b And Z a＝ 2*Z b Because the first synchronous pulley 101 is fixedly connected to the front vertical plate of the frame 110, ω a =0;

[0049] The motor shaft (i.e., output shaft) in motor 108 is fixedly connected to the rear end of coupling 109, and the drive shaft 105 is fixedly connected to the front end of coupling 109.

[0050] It should be noted that the motor 108 drives the drive shaft 105 to rotate via the rotation of the coupling 109, which in turn drives the rocker arm 104 to rotate; the present invention specifies that the angular velocity of the rocker arm 104 is ω. H ;

[0051] It should be noted that the second synchronous pulley 102 is fixedly connected to the driven shaft 106, and the chuck 107 is fixedly connected to the driven shaft 106. That is, the angular velocity of the chuck 107 is the same as the angular velocity of the second synchronous pulley 102, both being ω. b .

[0052] In terms of specific implementation, a tension wheel mounting bracket is provided in the middle of the swing arm 104;

[0053] The rear end of the tension wheel mounting bracket is pivotally (rotatably) connected to a tension wheel 111;

[0054] The tension pulley 111 is located on the outside of the timing belt 103;

[0055] Tensioner pulley 111 is in contact with synchronous belt 103.

[0056] It should be noted that the function of tensioner 111 is to tension the timing belt 103 and prevent slippage.

[0057] In this invention, for specific implementation, see [link to relevant documentation]. Figure 9 As shown, motion analysis calculations are performed on the foam attaching device for the battery cell provided by this invention (i.e., the 90-degree variable-distance foam attaching structure for picking up and placing materials):

[0058] According to the planetary gear train transmission ratio formula The absolute angular velocity ω of the second synchronous pulley 102 can be derived as follows. b The calculation formula.

[0059] For the above formula for the transmission ratio of planetary gear trains, where ω a ω: Absolute angular velocity of the first synchronous pulley 101; b ω: Absolute angular velocity of the second synchronous pulley 102; H : Absolute angular velocity of the rotation of the pendulum 104; Z a : Number of teeth on the first synchronizer pulley 101; Z b The number of teeth on the second synchronizer pulley 102;

[0060] The absolute angular velocity ω of the second synchronous pulley 102 b The calculation formula is as follows:

[0061]

[0062] Because ω a =0;

[0063] so

[0064] And because of Z a＝ 2*Z b ;

[0065] Thus, ω is derived b =-ω H .

[0066] Therefore, it can be concluded that the rotation direction of the pendulum 104 is opposite to that of the second synchronous wheel 102, and their rotational angular velocities are the same. Thus, when the pendulum 104 rotates 90 degrees counterclockwise, the rotation direction of the second synchronous wheel 102 is opposite to that of the pendulum 104, and their rotational angular velocities are the same, which is 90 degrees clockwise.

[0067] In this invention, for specific implementation, see [link to relevant documentation]. Figure 4As shown, the material handling and feeding variable pitch assembly 2 includes a carrier plate 21, a variable pitch mechanism 22, and a material handling and feeding mechanism 23;

[0068] The top of the carrier plate 21 is connected to the front end of the chuck 107 in the rotating assembly 1;

[0069] The bottom of the carrier plate 21 is fixedly connected to the pitch mechanism 22 and is located at the top of the pitch mechanism 22;

[0070] The material handling mechanism 23 is fixedly connected to the pitch changing mechanism 22 and is located on the lower side of the pitch changing mechanism 22;

[0071] For specific implementation details, see [link / reference] Figure 5 , Figure 6 As shown, the pitch mechanism 22 includes a first fixed plate 221, a pitch cylinder 222, a cylinder connector 223, a pitch plate 224, a guide rod mounting seat 225, a linear bearing 226, and a guide rod 227.

[0072] The cylinder body of the variable pitch cylinder 222 is fixedly installed at the bottom of the first fixed plate 221;

[0073] The piston rod of the variable pitch cylinder 222 is connected to the cylinder connector 223;

[0074] A guide rod mounting base 225 is fixedly connected to the left and right ends of the top of the first fixing plate 221, respectively.

[0075] Four horizontally distributed guide rods 227 are fixed between the upper parts of the two guide rod mounting seats 225 on opposite sides.

[0076] Each guide rod 227 is provided with two linear bearings 226, which can slide along the axial direction of the guide rod 227;

[0077] The number of longitudinally distributed variable-pitch plates 224 is four;

[0078] Two linear bearings 226 are fixedly connected to the top of two non-adjacent guide rods 227 on each pitch plate 224;

[0079] The rightmost pitch plate 224 is fixedly connected to the cylinder connector 223.

[0080] It should be noted that the function of the linear bearing 226 and the guide rod 227 is to ensure that the pitch plate 224 can only move left and right along the axis of the guide rod 227.

[0081] Furthermore, any two adjacent pitch plates 224 are connected by a combination of two pairs of pitch rods;

[0082] Each pair of pitch levers includes a first pitch lever 228 and a second pitch lever 229, and one end of the first pitch lever 228 and the second pitch lever 229 are hinged together by a first pin 230, and the other end of the first pitch lever 228 and the second pitch lever 229 are respectively hinged to the middle of an adjacent pitch plate 224.

[0083] It should be noted that, see Figure 6 As shown, the first pitch lever 228 and the second pitch lever 229 are distributed in a scissor-like manner, with the outer side hinged by the first pin 230 and the middle side hinged by the second pin 231.

[0084] It should be noted that there are four second pins 231, with one second pin 231 located at the center of each pitch plate 224.

[0085] Furthermore, a longitudinally distributed limiting block 232 is fixedly installed at the top horizontal middle position of the first fixing plate 221;

[0086] Furthermore, the first pin 230 has three rows (each row of first pins includes two first pins 230 symmetrically distributed front and back), wherein the second row of first pins located in the middle and the limiting block 232 are connected by a sliding fit; the specific structural design is as follows: the bearing 2300 at the bottom of each first pin 230 is in sliding fit with the vertical slots 2320 distributed longitudinally on the limiting block 232.

[0087] It should be noted that each of the first pins 230 in the second column has a bearing at its bottom, and a vertically distributed slot is formed on the limiting block 232. The bearing 2300 at the bottom of the first pin 230 slides in engagement with the vertical slot 2320 on the limiting block 232. The bearing can only move vertically along the slot, meaning that the second column of first pins can only move in the longitudinal direction. When the pitch cylinder 222 moves, the four pitch plates 224 will simultaneously move towards or away from the second column of first pins.

[0088] It should also be noted that when the piston rod of the pitch cylinder 222 extends, it moves the cylinder connector 223 to the right. The cylinder connector 223 moves the rightmost pitch plate 224 to the right together. Under the scissor-like structure of the first pitch rod 228 and the second pitch rod 229, the two pitch plates to the right of the first pin in the second row in the middle move to the right at the same time, and the two pitch plates to the left move to the left at the same time, thereby completing the opening of the pitch (that is, increasing the distance between any two adjacent pitch plates). Similarly, when the piston rod of the pitch cylinder 222 retracts, the pitch can be closed (that is, reducing the distance between any two adjacent pitch plates).

[0089] For specific implementation details, see [link / reference] Figure 7As shown, there are four sets of material handling mechanisms 23, and each set of material handling mechanisms 23 has the same structure.

[0090] The present invention is specifically described with reference to one set of material handling mechanism 23;

[0091] Each set of material handling mechanism 23 includes a second fixed plate 231, a connecting plate 232, a material handling cylinder 233, a suction cup mounting plate 234, and a suction cup 235;

[0092] The lower ends of vertically distributed connecting plates 232 are fixedly connected to the front and rear sides of the second fixing plate 231, respectively.

[0093] It should be noted that there are two connecting plates 232, which are fixedly connected to both sides of the second fixing plate 231 respectively.

[0094] Take the cylinder body of the feeding cylinder 233 and fix it at the top center of the second fixing plate 231;

[0095] The piston rod on the lower side of the material handling cylinder 233 passes through the through hole reserved on the second fixed plate 231 and is connected to the longitudinally distributed suction cup mounting plate 234.

[0096] Multiple suction cups 235 are evenly arranged on the bottom of the suction cup mounting plate 234.

[0097] Furthermore, the upper ends of the two connecting plates 232 in the material handling mechanism 23 are fixed to the front and rear ends of the pitch plate 224 in the pitch mechanism 22.

[0098] Furthermore, there are four suction cups 235, which are evenly distributed on the bottom of the suction cup mounting plate 234.

[0099] It should be noted that the suction cup mounting plate 234 has an internal airflow channel, which connects the airflow channels of the four suction cups 235; the function of the suction cups 235 is to pick up or release the linear foam 3. The suction cup mounting plate 234 and the suction cups on it are conventional structural designs with mature existing technology, which are common technical knowledge and will not be elaborated here.

[0100] It should also be noted that when the material pick-up and drop-off variable pitch assembly 2 reaches the material pick-up position, the material pick-up and drop-off cylinder 233 extends, driving the suction cup mounting plate 234 to extend, and the suction cup 235 on the suction cup mounting plate 234 completes the picking up of the linear foam 3.

[0101] It should also be noted that when the material pick-up and release variable pitch assembly 2 reaches the release position, the material pick-up and release cylinder 233 extends, driving the suction cup mounting plate 234 to extend, and the suction cup 235 completes the release of the straight foam 3.

[0102] The aforementioned absorption and release control process can be further developed and implemented using a PLC (Programmable Logic Controller).

[0103] In this invention, for specific implementation, see [link to relevant documentation]. Figure 1 , Figure 3 , Figure 4 As shown, the material handling pitch changer assembly 2 is fixedly connected to the rotating assembly 1, which is accomplished by the fixed connection between the carrier plate 21 in the material handling pitch changer assembly 2 and the clamp 107 in the rotating assembly 1.

[0104] It should be noted that when the rocker arm 104 in the rotating assembly 1 moves at a speed ω H When rotated 90 degrees counterclockwise, since the chuck 107 and the second synchronous wheel 102 are located at opposite ends of the driven shaft 106, and the rotation direction of the second synchronous wheel 102 is opposite to the rotation direction of the rocker arm 104, the material handling torque converter 2 connected to the chuck 107 will rotate at the same speed ω. H Rotate 90 degrees clockwise.

[0105] In this invention, for specific implementation, see [link to relevant documentation]. Figure 4 , Figure 5 , Figure 7 As shown, the material handling mechanism 23 is fixedly connected to the pitch changing mechanism 22 by fixing the upper ends of the two connecting plates 232 in the material handling mechanism 23 to the front and rear ends of the pitch changing plate 224 in the pitch changing mechanism 22.

[0106] It should be noted that when the pitch-changing mechanism 22 is opened or closed, it will drive the opening and closing of the four sets of material handling mechanisms 23.

[0107] In this invention, for specific implementation, see [link to relevant documentation]. Figure 8 As shown, after the foam strip 3 is pasted on the battery cell 4, there are four foam strips 3, which are evenly distributed on the battery cell 4.

[0108] It should be noted that the raw material for the linear foam 3 is in roll form. It can be pre-laid into vertically arranged sheets of linear foam using a conventional and well-known feeder structure. The feeder can pre-peel the linear foam from the release paper, facilitating suction cup pickup. The peeled linear foam has adhesive backing and can be attached to the battery cell 4. The feeder structure is a mature and well-known existing equipment structure and will not be described in detail in this invention.

[0109] To better understand the technical solution of the present invention, the working process of the present invention is described below.

[0110] First, see Figure 1As shown, for the foam attaching device for the battery cell provided by the present invention (i.e., the 90-degree pick-and-place variable-pitch foam attaching structure), when the material is in the pick-and-place position, the piston rod of the pick-and-place cylinder 233 in the pick-and-place variable-pitch assembly 2 drives the suction cup mounting plate 234 to extend to the right. Each suction cup mounting plate 234 picks up a sheet of one-line foam 3 through the suction cup 235 on it (at this time, it is required that the distance between two adjacent suction cup mounting plates 234 is equal to the distance between two adjacent sheets of one-line foam 3, and the four suction cup mounting plates 234 are set correspondingly to the four sheets of one-line foam 3).

[0111] Then, the piston rod of the take-up and discharge cylinder 233 drives the suction cup mounting plate 234 to retract. Under the action of the motor 108 in the rotating assembly 1, the motor 108 drives the swing arm 104 to rotate 90 degrees counterclockwise. At the same time, the take-up and discharge pitch conversion assembly 2 rotates 90 degrees clockwise at the same speed (specifically, absolute angular velocity) to reach the discharge position (e.g., Figure 2 (as shown in the position), at this time, the piston rod of the pitch cylinder 222 in the material pick-and-place pitch assembly 2 extends, so that the four sets of material pick-and-place mechanisms 23 open the pitch change (that is, can increase the distance between any two adjacent pitch plates).

[0112] It should be noted that in this invention, the 90 degrees in the clockwise rotation of the pick-and-place pitch variable assembly 2 at the same speed is the absolute angular velocity. The calculation formulas above are all absolute angular velocities (relative to the earth or a stationary reference frame), not the angular velocity relative to the rotation of the pendulum rod 104 (relative angular velocity). While the pick-and-place pitch variable assembly 2 revolves around the motor output shaft with the pendulum rod 104, it also rotates in the opposite direction relative to the pendulum rod 104.

[0113] Then, the piston rod of the picking and dispensing cylinder 233 in the picking and dispensing mechanism 23 drives the suction cup mounting plate 234 to extend downward and stick the four straight foams 3 onto the battery cell 4 (the side of the straight foams 3 facing the battery cell 4 has adhesive backing).

[0114] Subsequently, the piston rod of the picking and discharging cylinder 233 in the picking and discharging mechanism 23 drives the suction cup mounting plate 234 to retract upward, the piston rod of the variable pitch cylinder 222 retracts, and the four sets of picking and discharging mechanisms 23 close the variable pitch.

[0115] Next, under the action of the motor 108 in the rotating assembly 1, the motor 108 drives the swing arm 104 to rotate 90 degrees clockwise, while the material pick-up and drop-off pitch conversion assembly 2 rotates 90 degrees counterclockwise at the same speed (specifically, absolute angular velocity) to reach the material pick-up position.

[0116] It should be noted that in this invention, the 90 degrees in the counterclockwise rotation of the pick-and-place pitch variable assembly 2 at the same speed is the absolute angular velocity. The calculation formulas above are all absolute angular velocities (relative to the earth or a stationary reference frame), not the angular velocity relative to the rotation of the pendulum rod 104 (relative angular velocity). While the pick-and-place pitch variable assembly 2 revolves around the motor output shaft with the pendulum rod 104, it also rotates in the opposite direction relative to the pendulum rod 104.

[0117] The above process is the complete process of the foam attaching device for the battery cell provided by the present invention (i.e., the 90-degree pick-up and drop-out variable distance foam attaching structure) from picking up four sheets of one-line foam 3 to attaching the four sheets of one-line foam 3 to the battery cell 4 at the same time.

[0118] In summary, as can be seen from the technical solutions provided by this invention, compared with the prior art, the foam-attaching device for battery cells (i.e., the 90-degree variable-pitch foam-attaching structure for picking up and placing materials) provided by this invention has a scientifically reasonable structural design, lower manufacturing cost, and higher working efficiency. This invention can efficiently and reliably perform a one-line foam-attaching operation on the side of the battery cell (square battery cell) in the thickness direction, significantly improving working efficiency and reducing working costs, and has significant practical significance.

[0119] The rotating component used in this invention utilizes the principle of a planetary gear system and has undergone specialized structural design and development. The structure is reasonable and ingenious. The material loading and unloading pitch-changing component can directly attach four sheets of one-piece foam to the battery cell after pitch change, resulting in high efficiency.

[0120] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A foam bonding device for battery cells, characterized in that, It includes a rotating assembly (1) and a material handling pitch control assembly (2); The rotating assembly (1) is connected to the material pick-up and drop-out pitch-changing assembly (2); The rotating component (1) is used to drive the material pick-up and drop-out pitch component (2) to move between a preset first position and a preset second position; The material pick-up and drop-out pitch conversion assembly (2) is used to pick up multiple parallel straight foams (3) at a preset first position, and perform pitch conversion operation on the multiple straight foams (3) after reaching a preset second position, and then paste the pitch-converted multiple straight foams (3) onto the side of the battery cell (4).

2. The foam bonding device for the battery cell as described in claim 1, characterized in that, The first preset position is the material picking position; the material picking position is located to the upper right of the rotating component (1); The second position is preset as the material feeding position; the material feeding position is located directly below the rotating component (1).

3. The foam bonding device for the battery cell as described in claim 1, characterized in that, The rotating assembly (1) includes a first synchronous pulley (101), a second synchronous pulley (102), a synchronous belt (103), a rocker arm (104), a drive shaft (105), a driven shaft (106), a chuck (107), a motor (108), a coupling (109), and a frame (110); A motor (108) is installed on the rear side of the rear upright plate (1102) of the frame (110); The output shaft on the front side of the motor (108) passes through the through hole reserved on the rear end plate of the frame (110) and is connected to the rear end of the drive shaft (105) through the coupling (109). A first synchronous pulley (101) is fixedly installed on the front side of the front upright plate (1101) of the frame (110); The drive shaft (105) passes longitudinally through the front vertical plate (1101) of the frame (110); The front end of the drive shaft (105) is fixedly connected to one end of a rocker arm (104); The other end of the rocker arm (104) is pivotally connected to a driven shaft (106); A second synchronous pulley (102) is fixedly installed at the rear end of the driven shaft (106); The first synchronous pulley (101) and the second synchronous pulley (102) are connected by a synchronous belt (103); The front end of the driven shaft (106) is fixedly connected to the rear end of the chuck (107).

4. The foam bonding device for the battery cell as described in claim 3, characterized in that, The other end of the rocker arm (104) has an opening for a bearing, and the inner ring of the bearing has a driven shaft (106) that extends longitudinally through the inner ring of the bearing. And / or, The rack (110) is mounted on an external mounting platform; And / or, The center points of the first synchronous pulley (101) and the second synchronous pulley (102) are located on the same vertical plane; And / or, The number of teeth on the first synchronous pulley (101) is twice the number of teeth on the second synchronous pulley (102); And / or, A tension wheel mounting bracket is provided in the middle of the swing arm (104); A tensioning wheel (111) is pivotally connected to the rear end of the tensioning wheel mounting bracket; The tension pulley (111) is located on the outside of the synchronous belt (103); The tension pulley (111) is in contact with the timing belt (103).

5. The foam-attaching device for the battery cell as described in any one of claims 1 to 4, characterized in that, The material handling and feeding variable pitch assembly (2) includes a carrier plate (21), a variable pitch mechanism (22), and a material handling and feeding mechanism (23); The top of the carrier plate (21) is connected to the front end of the chuck (107) in the rotating assembly (1); The bottom of the carrier plate (21) is fixedly connected to the pitch mechanism (22) and is located at the top of the pitch mechanism (22); The material handling mechanism (23) is fixedly connected to the pitch changing mechanism (22) and is located on the lower side of the pitch changing mechanism (22); The pitch mechanism (22) includes a first fixed plate (221), a pitch cylinder (222), a cylinder connector (223), a pitch plate (224), a guide rod mounting seat (225), a linear bearing (226), and a guide rod (227); The cylinder body of the variable pitch cylinder (222) is fixedly installed at the bottom of the first fixed plate (221); The piston rod of the variable pitch cylinder (222) is connected to the cylinder connector (223); A guide rod mounting seat (225) is fixedly connected to the left and right ends of the top of the first fixing plate (221); Four horizontally distributed guide rods (227) are fixed between the upper parts of the two guide rod mounting seats (225) on opposite sides; Each guide rod (227) is provided with two linear bearings (226), which can slide along the axis of the guide rod (227); There are four longitudinally distributed variable-pitch plates (224).

6. The foam bonding device for the battery cell as described in claim 5, characterized in that, Each pitch plate (224) is fixedly connected to two linear bearings (226) on two non-adjacent guide rods (227) at the top; The rightmost pitch plate (224) is fixedly connected to the cylinder connector (223); Any two adjacent pitch plates (224) are connected by a combination of two pairs of pitch rods; Each pair of pitch levers includes a first pitch lever (228) and a second pitch lever (229), and one end of the first pitch lever (228) and the second pitch lever (229) are hinged together by a first pin (230), and the other end of the first pitch lever (228) and the second pitch lever (229) are respectively hinged to the middle of an adjacent pitch plate (224).

7. The foam bonding device for the battery cell as described in claim 6, characterized in that, A longitudinally distributed limiting block (232) is fixedly installed at the top horizontal middle position of the first fixed plate (221); The first pin (230) has three rows, and each row of first pins includes two first pins (230) symmetrically distributed front and back; The first pin and the limiting block (232) in the second column in the middle are connected by a sliding fit.

8. The foam bonding device for the battery cell as described in claim 5, characterized in that, There are four sets of material handling mechanisms (23), and each set of material handling mechanisms (23) has the same structure; Each set of material handling mechanism (23) includes a second fixed plate (231), a connecting plate (232), a material handling cylinder (233), a suction cup mounting plate (234), and a suction cup (235); The lower ends of vertically distributed connecting plates (232) are fixedly connected to the front and rear sides of the second fixing plate (231); Take the cylinder body of the feeding cylinder (233) and fix it at the top center of the second fixing plate (231); The piston rod on the lower side of the feeding cylinder (233) passes through the through hole reserved on the second fixed plate (231) and is connected to the longitudinally distributed suction cup mounting plate (234); Multiple suction cups (235) are evenly arranged on the bottom of the suction cup mounting plate (234).

9. The foam bonding device for the battery cell as described in claim 8, characterized in that, The upper ends of the two connecting plates (232) in the feeding and discharging mechanism (23) are fixed to the front and rear ends of the pitch plate (224) in the pitch mechanism (22); There are four suction cups (235), which are evenly distributed on the bottom of the suction cup mounting plate (234).

Images