Square lithium battery cell shell entering auxiliary device

Abstract

The utility model provides a kind of square lithium battery cell shell auxiliary device, including rest, fixed plate, first piston plate, second piston plate, transmission rod, resistance block, detection module, prompt device and controller;Fixed plate is equipped with horizontal hole and vertical hole of intercommunication;First piston plate is slidably installed in horizontal hole, and second piston plate is slidably installed in vertical hole;Transmission rod is slidably installed in horizontal hole, and two ends are respectively connected with first piston plate and resistance block;Resistance block and cell keep resistance connection;Detection module is installed on second piston plate;Prompt device is installed on fixed plate;Controller is electric signal connection with prompt device and detection module.When cell is inclined in pushing process, resistance block and first piston plate will be pushed to move inward together, second piston plate moves upward, detection module sends warning signal to controller, and controller controls prompt device to issue prompt signal, to prompt operator, improve cell shell effect.

Description

Technical Field

[0001] This utility model relates to the field of battery assembly equipment technology, and in particular to an auxiliary device for inserting square lithium battery cells into the casing. Background Technology

[0002] In the entire production process of square lithium batteries, the "casing" process is a crucial step. This process involves combining the mylar-encased battery cell with the lithium battery casing. The entire process is automated, enabling automated production. However, in the traditional square lithium battery cell casing process, automated equipment cannot guarantee that the top cover of the cell is flush with the opening at the top of the aluminum casing after casing. Manual shaping is still required after automated casing, which undoubtedly reduces work efficiency and increases labor costs in the manufacturing process.

[0003] In the prior art, utility model patent CN214706059U discloses a square lithium battery cell insertion auxiliary device. Through the design of a rectangular groove with a sloping inner wall and holes on the bottom wall of the rectangular groove, it assists in the insertion process of the battery cell and the square lithium battery casing, ensuring accurate alignment of the battery cell and the square lithium battery casing within the rectangular groove. This guarantees that the top cover of the battery cell is flush with the top opening of the square lithium battery casing after insertion. However, this patent cannot detect the tilt degree of the battery cell during insertion. If the battery cell tilts due to uneven pushing force during the insertion process, the auxiliary device cannot alert the operator, affecting the insertion effect. Utility Model Content

[0004] In view of this, the present invention proposes a square lithium battery cell insertion auxiliary device to solve the technical problem mentioned in the background art that the device cannot detect the tilt of the cell, which causes the cell to tilt during the insertion process due to uneven pushing force, and the auxiliary device cannot prompt the operator, thus affecting the cell insertion effect.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides an auxiliary device for inserting square lithium battery cells into a casing, including a mounting base, a fixing plate, a first piston plate, a second piston plate, a transmission rod, a contact block, a detection module, a prompting device, and a controller, wherein: The mounting base is used to securely hold the battery casing. Multiple fixing plates are installed on the top of the mounting base, and each fixing plate has interconnected horizontal and vertical holes. The first piston plate is slidably installed in the horizontal hole, and the second piston plate is slidably installed in the vertical hole. The second piston plate is linked with the first piston plate. When the first piston plate moves inward and outward along the horizontal hole, the second piston plate moves upward and downward along the vertical hole. The transmission rod is slidably installed in the horizontal hole, and its two ends are respectively connected to the first piston plate and the abutment block; The contact block is located outside the fixing plate and maintains a contact connection with the battery cell; The detection module is mounted on the second piston plate and is used to send a warning signal to the controller when displacement of the second piston plate is detected. The notification device is mounted on the fixed plate; The controller is electrically connected to the prompting device and the detection module, and is used to control the prompting device to issue a prompting signal after receiving a warning signal.

[0006] Based on the above technical solution, preferably, the fixing plate forms a sealing cavity in the area between the second piston plate and the first piston plate, and the sealing cavity is filled with hydraulic oil; The detection module includes a piezoelectric ceramic and a voltage sensor. The piezoelectric ceramic is fixedly connected to the bottom of the second piston plate and is used to convert the deformation into current when it is subjected to the pressure of the hydraulic oil. The second piston plate is fixed during detection. The voltage sensor is fixedly installed inside the second piston plate and connected to the piezoelectric ceramic. It is used to send a warning signal to the controller when the piezoelectric ceramic generates current.

[0007] Based on the above technical solution, preferably, it further includes a push spring, a first limiting member, and a second limiting member; the push spring is sleeved on the outside of the transmission rod, and its two ends are respectively fixedly connected to the side wall of the first piston plate and the fixed plate; the first limiting member is installed on the fixed plate and located at the horizontal hole, and is used to limit the movement of the transmission rod; the second limiting member is installed on the second piston plate, and is used to limit the movement of the second piston plate in the vertical hole; the controller is electrically connected to the first limiting member and the second limiting member respectively. Before the cell insertion operation is performed, the controller controls the first and second limiting components to release their limits, pushes the spring to move the first piston plate outward, and the flow of hydraulic oil causes the second piston plate to descend until the contact block is in close contact with the outer wall of the cell. At this time, the controller controls the second limiting component to stop, and the cell insertion operation begins.

[0008] Based on the above technical solutions, preferably, both the first limiting member and the second limiting member are electromagnets. The first limiting member is installed in the inner wall of the horizontal hole to magnetically attract the transmission rod. It also includes a mounting block, which is installed on the top of the second piston plate. The second limiting member is installed on the side of the mounting block and faces the inner wall of the vertical hole to magnetically attract the inner wall of the vertical hole.

[0009] Based on the above technical solutions, preferably, a third limiting member is also included, which is fixed to the top of the second piston plate and is used to abut against the end of the vertical hole away from the horizontal hole.

[0010] Based on the above technical solutions, preferably, the mounting base includes a base and multiple columns, the multiple columns are arranged perpendicular to the top surface of the base, and together with the top surface of the base, they form a placement area for placing the battery casing, and the fixing plate is installed on the top of the columns and corresponds to each column. It also includes a vacuum suction cup, which is installed on the side of the column near the placement area.

[0011] Based on the above technical solutions, preferably, it also includes an air pump, an annular tube, and a guide tube. The air pump is installed inside the base, the annular tube is connected to the air pump and the guide tube, the guide tube is installed inside the column, and each column is provided with multiple vacuum suction cups, which are connected to the guide tube.

[0012] Based on the above technical solutions, preferably, the prompting device uses light and / or sound to provide prompts.

[0013] The square lithium battery cell casing auxiliary device of this invention has the following advantages over the prior art: (1) The first piston plate is slidably installed in the horizontal hole, and the second piston plate is slidably installed in the vertical hole. The second piston plate is linked with the first piston plate. The contact block is in contact with the battery cell. When the battery cell tilts during the pushing process, it will push the contact block to move inward, thereby driving the first piston plate to move inward together through the transmission rod, thereby driving the second piston plate to move upward. When the detection module detects that the second piston plate has shifted, it sends a warning signal to the controller. After receiving the warning signal, the controller controls the prompting device to issue a prompting signal to prompt the operator, improve the battery cell insertion effect, and improve the product quality of the square battery. (2) A sealed cavity is formed in the area between the second piston plate and the first piston plate by the fixed plate, and the sealed cavity is filled with hydraulic oil. When the cell tilts during the pushing process, it will push the contact block to move inward, thereby driving the first piston plate to move inward together through the transmission rod. The hydraulic oil pushes the second piston plate to move upward. Since the second piston plate is fixed during the detection, the piezoelectric ceramic is converted into current when it is deformed by the pressure of the hydraulic oil. When the voltage sensor detects the current generated by the piezoelectric ceramic, it sends a warning signal to the controller. The second piston plate and the first piston plate are linked by the hydraulic oil. The piezoelectric ceramic can generate current when it detects a small displacement, and the sensitivity is high. (3) The push spring is sleeved on the outside of the transmission rod, and its two ends are fixedly connected to the side wall of the first piston plate and the fixed plate respectively, to ensure that the contact block keeps in contact with the battery cell. The first limiting member is used to limit the movement of the transmission rod, and the second limiting member is used to limit the movement of the second piston plate in the vertical hole. The controller is electrically connected to the first limiting member and the second limiting member respectively. Before the battery cell is inserted into the casing, the controller controls the first limiting member and the second limiting member to release the limiting position, the push spring pushes the first piston plate to move outward, and the flow of hydraulic oil drives the second piston plate to descend until the contact block is in close contact with the outer wall of the battery cell. At this time, the controller controls the second limiting member to limit the position and the battery cell insertion operation begins. (4) Both the first limiting member and the second limiting member are electromagnets. The first limiting member is installed in the inner wall of the horizontal hole to magnetically attract the transmission rod and restrict the movement of the transmission rod. The mounting block is installed on the top of the second piston plate, and the second limiting member is installed on the side of the mounting block and faces the inner wall of the vertical hole to magnetically attract the inner wall of the vertical hole and restrict the movement of the second piston plate in the vertical hole. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the square lithium battery cell casing auxiliary device in an embodiment of this utility model; Figure 2 This is a front view of the square lithium battery cell casing auxiliary device in an embodiment of this utility model; Figure 3 This utility model Figure 2 Enlarged view of part A in the middle; Figure 4 This utility model Figure 2 A magnified view of part B in the middle.

[0016] Explanation of reference numerals in the attached drawings: 1-Supporting base, 2-Fixing plate, 3-First piston plate, 4-Second piston plate, 5-Transmission rod, 6-Contact block, 7-Detection module, 8-Indicating device, 9-Controller, 10-Push spring, 11-First limiting component, 12-Second limiting component, 13-Mounting block, 14-Third limiting component, 15-Vacuum suction cup, 16-Air pump, 17-Annular tube, 18-Guide tube; 100 - Hydraulic oil, 200 - Storage area; 101 - Base, 102 - Column; 201 - Horizontal hole, 202 - Vertical hole; 701 - Piezoelectric ceramic, 702 - Voltage sensor. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0018] Reference Figures 1-4 As shown in the embodiment of this utility model, a square lithium battery cell casing insertion auxiliary device is proposed, including a mounting base 1, a fixing plate 2, a first piston plate 3, a second piston plate 4, a transmission rod 5, a contact block 6, a detection module 7, a prompting device 8, and a controller 9, wherein: The battery housing is fixedly placed in the mounting base 1; the battery housing is placed in the mounting base 1 with the opening facing upward, and the battery cell is pressed into the battery housing from above and downward by a pushing tool; Multiple fixing plates 2 are installed on the top of the mounting base 1. Each fixing plate 2 has a horizontal hole 201 and a vertical hole 202 that are interconnected. The horizontal hole 201 is located on the side of the fixing plate 2 close to the battery casing, and the vertical hole 202 is located on the side of the fixing plate 2 away from the battery casing. The vertical hole 202 extends upward along the end of the horizontal hole 201. The first piston plate 3 is slidably installed in the horizontal hole 201, and the second piston plate 4 is slidably installed in the vertical hole 202. The second piston plate 4 is linked with the first piston plate 3. When the first piston plate 3 moves inward and outward along the horizontal hole 201, the second piston plate 4 moves upward and downward along the vertical hole 202. The transmission rod 5 is slidably installed in the horizontal hole 201, and its two ends are respectively connected to the first piston plate 3 and the abutment block 6; The contact block 6 is located outside the fixing plate 2 and maintains a contact connection with the battery cell; The detection module 7 is installed on the second piston plate 4 and is used to send a warning signal to the controller 9 when displacement of the second piston plate 4 is detected. The prompting device 8 is mounted on the fixing plate 2; The controller 9 is electrically connected to the prompting device 8 and the detection module 7, and is used to control the prompting device 8 to issue a prompting signal after receiving a warning signal.

[0019] The square lithium battery cell insertion auxiliary device proposed in this embodiment involves a first piston plate 3 slidably installed in the horizontal hole 201, and a second piston plate 4 slidably installed in the vertical hole 202. The second piston plate 4 is linked with the first piston plate 3, and the contact block 6 maintains contact with the battery cell. When the battery cell tilts during insertion, it pushes the contact block 6 inward, thereby driving the first piston plate 3 inward through the transmission rod 5, which in turn drives the second piston plate 4 upward. When the detection module 7 detects displacement of the second piston plate 4, it sends a warning signal to the controller 9. After receiving the warning signal, the controller 9 controls the prompting device 8 to issue a prompting signal to remind the operator, thereby improving the battery cell insertion effect and the product quality of the square battery.

[0020] In some embodiments, the fixing plate 2 forms a sealed cavity in the area between the second piston plate 4 and the first piston plate 3, and the sealed cavity is filled with hydraulic oil 100; the detection module 7 includes a piezoelectric ceramic 701 and a voltage sensor 702. The piezoelectric ceramic 701 is fixedly connected to the bottom of the second piston plate 4 and is used to convert deformation into current when subjected to pressure from the hydraulic oil 100. The second piston plate 4 is fixed during detection; the voltage sensor 702 is fixedly installed inside the second piston plate 4 and connected to the piezoelectric ceramic 701, and is used to send a warning signal to the controller 9 when the piezoelectric ceramic 701 generates current. When the battery cell tilts during insertion, it pushes the contact block 6 inward, thereby driving the first piston plate 3 to move inward together via the transmission rod 5. The hydraulic oil 100 pushes the second piston plate 4 upward. Since the second piston plate 4 is fixed during detection, the piezoelectric ceramic 701 is converted into current when it deforms under the pressure of the hydraulic oil 100. When the voltage sensor 702 detects the current generated by the piezoelectric ceramic 701, it sends a warning signal to the controller 9. The hydraulic oil 100 enables the second piston plate 4 and the first piston plate 3 to be linked. The piezoelectric ceramic 701 can detect the current generated when there is a small displacement, and has high sensitivity.

[0021] In some embodiments, the square lithium battery cell casing insertion auxiliary device further includes a push spring 10, a first limiting member 11, and a second limiting member 12; the push spring 10 is sleeved on the outside of the transmission rod 5, and its two ends are fixedly connected to the side walls of the first piston plate 3 and the fixed plate 2, respectively; the first limiting member 11 is installed on the fixed plate 2 and located at the horizontal hole 201, and is used to limit the movement of the transmission rod 5; the second limiting member 12 is installed on the second piston plate 4, and is used to limit the movement of the second piston plate 4 in the vertical hole 202; the controller 9 is electrically connected to the first limiting member 11 and the second limiting member 12, respectively. The push spring 10 is fixedly connected to the side walls of the first piston plate 3 and the fixed plate 2 at both ends, respectively, to ensure that the contact block 6 remains in contact with the battery cell. Before the battery cell is inserted into the casing, the controller 9 controls the first limiting member 11 and the second limiting member 12 to release the limiting position, and the push spring 10 pushes the first piston plate 3 to move outward. The flow of hydraulic oil 100 drives the second piston plate 4 to descend until the contact block 6 is in close contact with the outer wall of the battery cell. At this time, the controller 9 controls the second limiting member 12 to limit the position and the battery cell insertion operation begins.

[0022] In some embodiments, both the first limiting member 11 and the second limiting member 12 are electromagnets. The first limiting member 11 is installed in the inner wall of the horizontal hole 201 to magnetically attract the transmission rod 5. A mounting block 13 is also included. The mounting block 13 is installed on the top of the second piston plate 4, and the second limiting member 12 is installed on the side of the mounting block 13 facing the inner wall of the vertical hole 202 to magnetically attract the inner wall of the vertical hole 202. Both the transmission rod 5 and the fixing plate 2 are made of magnetic material. The first limiting member 11 magnetically attracts the transmission rod 5, thus restricting its movement. The mounting block 13 is installed on the top of the second piston plate 4, and the second limiting member 12 is installed on the side of the mounting block 13 facing the inner wall of the vertical hole 202 to magnetically attract the inner wall of the vertical hole 202, thereby restricting the movement of the second piston plate 4 within the vertical hole 202.

[0023] In some embodiments, the square lithium battery cell casing auxiliary device further includes a third limiting member 14, which is fixed to the top of the second piston plate 4 and is used to abut against the end of the vertical hole 202 away from the horizontal hole 201. The vertical hole 202 is a blind hole with a closed top. When the third limiting member 14 abuts against the top of the vertical hole 202, the abutting block 6 is in the position closest to the end face of the fixing plate 2, and the deformation of the pushing spring 10 is maximized, avoiding excessive force on the pushing spring 10 and thus improving the reliability of the device.

[0024] In some embodiments, the mounting base 1 includes a base 101 and a plurality of columns 102. The plurality of columns 102 are arranged perpendicular to the top surface of the base 101 and together with the top surface of the base 101, form a placement area 200 for placing the battery casing. The fixing plate 2 is installed on the top of the columns 102 and corresponds one-to-one with the columns 102. The square lithium battery cell insertion auxiliary device also includes a vacuum suction cup 15, which is installed on the side of the columns 102 near the placement area 200. By forming the placement area 200 between the plurality of columns 102 and the top surface of the base 101, the battery casing is placed in the placement area 200. The four sides of the battery casing are attracted by the vacuum suction cup 15 to fix the battery casing and prevent the battery casing from shaking during the insertion of the battery cell.

[0025] In some embodiments, the square lithium battery cell casing auxiliary device further includes an air pump 16, an annular tube 17, and a guide tube 18. The air pump 16 is installed inside the base 101. The annular tube 17 is connected to the air pump 16 and the guide tube 18. The guide tube 18 is installed inside the column 102. Each column 102 is provided with multiple vacuum suction cups 15, and the multiple vacuum suction cups 15 are connected to the guide tube 18. The air pump 16 is a miniature air pump 16. The air pump 16 and the guide tube 18 are connected through the annular tube 17 to realize gas delivery. The multiple vacuum suction cups 15 are connected to the guide tube 18 to realize vacuum release of the vacuum suction cups 15 on the same column 102, which is convenient for control.

[0026] In some embodiments, the prompting device 8 uses light and / or sound to provide prompts. When the prompting device 8 uses light, it can be installed on the top of the fixed plate 2 for easy visibility by the operator; when the device uses sound, its placement can be relatively random, as long as the operator can hear it. Light and sound can be used simultaneously for better prompting of the operator.

[0027] In some embodiments, the square lithium battery cell casing auxiliary device further includes a storage battery 19, which is electrically connected to the controller 9 and is used to supply power to the controller 9.

[0028] The working principle of the square lithium battery cell insertion auxiliary device in this embodiment is as follows: When the cell tilts during insertion, it pushes the contact block 6 inward, thereby driving the first piston plate 3 to move inward together through the transmission rod 5. The hydraulic oil 100 pushes the second piston plate 4 upward. Since the second piston plate 4 is fixed during testing, the piezoelectric ceramic 701 is converted into current when it is deformed by the pressure of the hydraulic oil 100. When the voltage sensor 702 detects the current generated by the piezoelectric ceramic 701, it sends a warning signal to the controller 9. After receiving the warning signal, the controller 9 controls the prompting device 8 to emit light and / or sound prompts to prompt the operator, improve the cell insertion effect, and improve the product quality of the square battery.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A square lithium battery cell casing insertion auxiliary device, characterized in that, The system includes a mounting base (1), a fixing plate (2), a first piston plate (3), a second piston plate (4), a transmission rod (5), a contact block (6), a detection module (7), a prompting device (8), and a controller (9), wherein: The battery casing is fixedly placed on the mounting base (1); Multiple fixing plates (2) are installed on the top of the mounting base (1), and the fixing plates (2) are provided with horizontal holes (201) and vertical holes (202) that are interconnected. The first piston plate (3) is slidably installed in the horizontal hole (201), and the second piston plate (4) is slidably installed in the vertical hole (202). The second piston plate (4) is linked with the first piston plate (3). When the first piston plate (3) moves inward and outward along the horizontal hole (201), the second piston plate (4) moves upward and downward along the vertical hole (202). The transmission rod (5) is slidably installed in the horizontal hole (201), and its two ends are respectively connected to the first piston plate (3) and the abutment block (6); The contact block (6) is located outside the fixing plate (2) and maintains a contact connection with the battery cell; The detection module (7) is installed on the second piston plate (4) and is used to send a warning signal to the controller (9) when displacement of the second piston plate (4) is detected. The prompting device (8) is mounted on the fixing plate (2); The controller (9) is electrically connected to the prompting device (8) and the detection module (7) and is used to control the prompting device (8) to issue a prompting signal after receiving a warning signal.

2. The square lithium battery cell casing auxiliary device as described in claim 1, characterized in that, The fixed plate (2) forms a sealed cavity in the area between the second piston plate (4) and the first piston plate (3), and the sealed cavity is filled with hydraulic oil (100). The detection module (7) includes a piezoelectric ceramic (701) and a voltage sensor (702). The piezoelectric ceramic (701) is fixedly connected to the bottom of the second piston plate (4) and is used to convert the deformation into current when it is subjected to the pressure of the hydraulic oil (100). The second piston plate (4) is fixed during detection. The voltage sensor (702) is fixedly installed inside the second piston plate (4) and connected to the piezoelectric ceramic (701). It is used to send a warning signal to the controller (9) when the piezoelectric ceramic (701) generates current.

3. The square lithium battery cell casing auxiliary device as described in claim 2, characterized in that, It also includes a push spring (10), a first limiting member (11), and a second limiting member (12); the push spring (10) is sleeved on the outside of the transmission rod (5), and its two ends are fixedly connected to the side walls of the first piston plate (3) and the fixed plate (2), respectively; the first limiting member (11) is installed on the fixed plate (2) and located at the horizontal hole (201) to limit the movement of the transmission rod (5); the second limiting member (12) is installed on the second piston plate (4) to limit the movement of the second piston plate (4) in the vertical hole (202); the controller (9) is electrically connected to the first limiting member (11) and the second limiting member (12), respectively. Before the battery cell is installed, the controller (9) controls the first limiting member (11) and the second limiting member (12) to release the limit, push the spring (10) to push the first piston plate (3) to move outward, and the flow of hydraulic oil (100) drives the second piston plate (4) to descend until the contact block (6) is close to the outer wall of the battery cell. At this time, the controller (9) controls the second limiting member (12) to limit and start the battery cell installation operation.

4. The square lithium battery cell casing auxiliary device as described in claim 3, characterized in that, Both the first limiting member (11) and the second limiting member (12) are electromagnets. The first limiting member (11) is installed in the inner wall of the horizontal hole (201) for magnetically attracting the transmission rod (5). It also includes a mounting block (13), which is installed on the top of the second piston plate (4). The second limiting member (12) is installed on the side of the mounting block (13) and faces the inner wall of the vertical hole (202) for magnetically attracting the inner wall of the vertical hole (202).

5. The square lithium battery cell casing auxiliary device as described in claim 4, characterized in that, It also includes a third limiting member (14), which is fixed to the top of the second piston plate (4) and is used to abut against the end of the vertical hole (202) away from the horizontal hole (201).

6. The auxiliary device for inserting square lithium battery cells as described in claim 1, characterized in that, The mounting base (1) includes a base (101) and a plurality of columns (102). The plurality of columns (102) are arranged perpendicular to the top surface of the base (101) and together with the top surface of the base (101) form a placement area (200) for placing the battery casing. The fixing plate (2) is installed on the top of the columns (102) and corresponds one-to-one with the columns (102). It also includes a vacuum suction cup (15), which is installed on the side of the column (102) near the placement area (200).

7. The square lithium battery cell casing auxiliary device as described in claim 6, characterized in that, It also includes an air pump (16), an annular tube (17) and a guide tube (18). The air pump (16) is installed in the base (101). The annular tube (17) is connected to the air pump (16) and the guide tube (18). The guide tube (18) is installed in the column (102). Each column (102) is provided with a plurality of vacuum suction cups (15). The plurality of vacuum suction cups (15) are connected to the guide tube (18).

8. The auxiliary device for inserting square lithium battery cells as described in any one of claims 1-7, characterized in that, The prompting device (8) uses light and / or sound to provide prompts.

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