An assembly device and method for a battery case

Abstract

The application discloses an assembling device and method for a battery shell and belongs to the technical field of power battery assembling. The assembling device comprises a supporting assembly and a positioning assembly. The supporting assembly comprises a supporting table and a support for supporting a cover plate, the supporting table is provided with a first work station and a second work station, the top of the support is provided with a plurality of positioning pins, one end of each positioning pin is tapered, and the support is located on the second work station. The positioning assembly comprises a suction plate and a displacement structure, a plurality of suction cups, a plurality of limiting columns, a plurality of first positioning columns and a plurality of air cylinders are inserted and assembled on the bottom surface of the suction plate, the output end of each air cylinder is coaxially connected with a second positioning column, each second positioning column is coaxially inserted and assembled in the corresponding limiting column, and one end of each second positioning column is tapered. The application provides an assembling device for a battery shell, precise positioning between the cover plate and the shell can be automatically realized through the displacement structure and the suction cup and other structures, so that the assembling efficiency is improved, and the production demand is met.

Description

Technical Field

[0001] This invention belongs to the field of power battery assembly technology, specifically relating to an assembly device and method for battery casings. Background Technology

[0002] With the rapid development of new energy vehicles, power battery production is gradually transforming from semi-automatic to fully automatic production in order to improve production efficiency and meet production needs.

[0003] In related technologies, the battery casing includes a housing and a cover plate. The housing is used to house the power battery. The cover plate and the housing are connected and assembled by applying adhesive and bolts, thereby forming a flow channel for coolant to flow between the cover plate and the housing. The coolant is then used to cool the power battery and improve its safety performance.

[0004] The positioning accuracy between the battery casing and the cover plate is a key factor affecting its cooling performance. However, existing casings and covers plates are large in size and are mainly assembled manually. While they meet positioning accuracy to some extent, the assembly efficiency is insufficient to meet production requirements. Summary of the Invention

[0005] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides an assembly device and method for battery casing, the purpose of which is to automatically achieve precise positioning between the cover plate and the casing through structures such as displacement structure and suction cup, thereby improving assembly efficiency and meeting production needs.

[0006] In a first aspect, embodiments of the present invention provide an assembly device for a battery casing, the assembly device including a support component and a positioning component;

[0007] The support assembly includes a support platform and a bracket for supporting the cover plate. The support platform has a first station and a second station. The first station is used to place the cover plate. The top of the bracket has a plurality of spaced positioning pins. The end of each positioning pin facing away from the bracket is tapered. The plurality of positioning pins are used to be inserted into the positioning holes of the cover plate. The bracket is located at the second station.

[0008] The positioning assembly includes a suction plate and a displacement structure. Multiple suction cups, multiple limiting posts, multiple first positioning posts, and multiple cylinders are inserted into the bottom surface of the suction plate. The suction cups are spaced apart to adsorb the cover plate. The limiting posts are arranged in parallel and spaced apart to limit the position of the cover plate after it is adsorbed by the suction cups. The end of each first positioning post facing away from the suction plate is tapered. The first positioning posts are inserted into positioning holes in the housing to achieve positioning between the suction plate and the housing. The output end of each cylinder is coaxially connected to a second positioning post. Each second positioning post is coaxially inserted into a corresponding limiting post to extend beyond the corresponding limiting post. The end of each second positioning post facing away from the suction plate is tapered. The second positioning posts are inserted into positioning holes in the cover plate to achieve positioning between the suction plate and the cover plate. The displacement structure is drively connected to the suction plate to drive its lifting, lowering, and rotation.

[0009] Optionally, the outer edge of the bracket has a plurality of spaced pneumatic grippers for pressing the cover plate so that the cover plate fits onto the bracket.

[0010] Optionally, the bracket has a through-beam photoelectric switch for monitoring the position of the cover plate on the bracket, and the through-beam photoelectric switch is electrically connected to a buzzer.

[0011] Optionally, the bottom of the bracket has a clearance notch for circumventing the cover plate, and the bracket is slidably arranged on the support platform so that the bracket can slide above the first workstation or the second workstation.

[0012] Optionally, the support platform has two parallel and spaced slide rails, and both sides of the bracket can be slidably arranged on the corresponding slide rails.

[0013] Optionally, the bracket includes a connecting part and two supporting parts. The two ends of the connecting part are respectively connected to the two supporting parts to form a U-shaped structure. The end of each supporting part facing away from the connecting part is slidably engaged with the corresponding slide rail.

[0014] Optionally, both the first workstation and the second workstation have multiple positioning columns, which are arranged vertically at intervals on the support platform.

[0015] Optionally, the support assembly further includes a slide plate slidably disposed on the support platform such that the slide plate and the bracket are spaced apart, and the first workstation and the second workstation are located on the slide plate.

[0016] Optionally, the first station is equipped with a lifting module, which includes a servo motor, a lead screw, and a top block. The output shaft of the servo motor is connected to the lead screw, one end of the lead screw is inserted into the top block, and the top block is slidably arranged on the support platform to drive the top block to push multiple cover plates up.

[0017] Secondly, embodiments of the present invention provide an assembly method for a battery casing, the assembly method being based on the assembly apparatus described in the first aspect, the assembly method comprising:

[0018] A cover plate is placed at the first workstation, and the suction plate is moved by the displacement structure, thereby transferring a cover plate to the top of the multiple positioning pins of the support platform by multiple suction cups;

[0019] Release the suction force of the multiple suction cups on the cover plate, the cover plate falls down, and each of the positioning pins is inserted into the corresponding positioning hole on the cover plate;

[0020] The second positioning post is driven to extend out of the corresponding limiting post by each of the cylinders, and the suction plate is moved down by the displacement structure, so that the multiple suction cups can pick up the cover plate again. At the same time, each of the second positioning posts is inserted into the corresponding positioning hole on the cover plate.

[0021] The displacement structure moves the suction plate and the cover plate, releasing the suction force of the multiple suction cups on the cover plate, and the cover plate is accurately placed on the housing by the positioning of the first positioning post.

[0022] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art are as follows:

[0023] In the assembly method for a battery casing provided by this invention, when positioning the cover plate and the casing, the cover plate is placed at a first station. A displacement structure moves the suction plate (during the suction process, each limiting post abuts against the cover plate, ensuring the cover plate and suction plate remain parallel and spaced throughout the suction process), thereby transferring the cover plate above multiple positioning pins on the support platform via multiple suction cups. Next, the suction force of the multiple suction cups on the cover plate is released, the cover plate falls, and each positioning pin is inserted into the corresponding positioning hole on the cover plate, thus achieving precise positioning of the cover plate. Then, each cylinder drives the second positioning post to extend from its corresponding limiting post, and the displacement structure lowers the suction plate, allowing the multiple suction cups to pick up the cover plate again. Simultaneously, each second positioning post is inserted into the corresponding positioning hole on the cover plate, ensuring that the cover plate is accurately picked up onto the limiting post and suction cups during the second suction, thus guaranteeing the positioning accuracy between the cover plate and the suction plate. Finally, the suction plate and cover plate are transferred by the displacement structure, releasing the suction force of the multiple suction cups on the cover plate. Then, the cover plate is precisely placed onto the housing by the positioning of the first positioning posts. At this point, the multiple first positioning posts achieve precise positioning between the suction plate and the housing, thus ultimately achieving automatic and precise positioning of the cover plate and the housing based on the positioning between the cover plate and the suction plate.

[0024] In other words, the assembly device for battery casing provided by the present invention can automatically achieve precise positioning between the cover plate and the casing through displacement structure and suction cup, thereby improving assembly efficiency and meeting production needs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an assembly device for a battery casing provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the suction plate provided in an embodiment of the present invention;

[0027] Figure 3 This is an assembly cross-sectional view of the second positioning post provided in an embodiment of the present invention;

[0028] Figure 4 yes Figure 1 A magnified view of a portion of the image;

[0029] Figure 5 This is a flowchart of an assembly method for a battery casing provided in an embodiment of the present invention.

[0030] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0031] 1. Support platform; 11. First station; 12. Second station; 13. Slide rail; 14. Positioning column; 15. Slide plate; 16. Lifting module; 2. Bracket; 21. Positioning pin; 22. Pneumatic gripper; 23. Through-beam photoelectric switch; 24. Connecting part; 25. Support part; 3. Suction plate; 31. Suction cup; 32. Limiting column; 33. First positioning column; 34. Cylinder; 341. Second positioning column; 100. Cover plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0033] 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," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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.

[0034] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] Example:

[0038] Figure 1 This is a schematic diagram of the structure of an assembly device for a battery casing provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the assembly device includes a support assembly and a positioning assembly.

[0039] The support assembly includes a support platform 1 and a bracket 2 for supporting the cover plate 100. The support platform 1 has a first station 11 and a second station 12. The first station 11 is used to place the cover plate 100. The top of the bracket 2 has a plurality of spaced positioning pins 21. The end of each positioning pin 21 facing away from the bracket 2 is tapered. The plurality of positioning pins 21 are used to be inserted into the positioning holes of the cover plate 100. The bracket 2 is located on the second station 12.

[0040] The positioning components include a suction plate 3 and a displacement structure (not shown in the figure).

[0041] Figure 2 This is a schematic diagram of the suction plate provided in an embodiment of the present invention, as shown below. Figure 2 As shown, multiple suction cups 31, multiple limiting posts 32, multiple first positioning posts 33, and multiple cylinders 34 are inserted into the bottom surface of the suction plate 3. The suction cups 31 are arranged at intervals to adsorb the cover plate 100. The multiple limiting posts 32 are arranged in parallel at intervals to limit the cover plate 100 after the multiple suction cups 31 adsorb it. The end of each first positioning post 33 facing away from the suction plate 3 is conical. The multiple first positioning posts 33 are used to insert into the positioning holes of the housing to realize the connection between the suction plate 3 and the housing. For positioning, the output end of each cylinder 34 is coaxially connected to a second positioning post 341. Each second positioning post 341 is coaxially inserted into a corresponding limiting post 32 to extend out of the corresponding limiting post 32. The end of each second positioning post 341 facing away from the suction plate 3 is tapered. Multiple second positioning posts 341 are used to insert into the positioning holes of the cover plate 100 to achieve positioning between the suction plate 3 and the cover plate 100. The displacement structure is connected to the suction plate 3 for transmission to drive the suction plate 3 to lift and move.

[0042] In the assembly method for a battery casing provided in this embodiment of the invention, when positioning the cover plate 100 and the casing, the cover plate 100 is placed on the first station 11, and the suction plate 3 is moved by the displacement structure (during the adsorption of the cover plate 100, each limiting post 32 abuts against the cover plate 100 to ensure that the cover plate 100 and the suction plate 3 are always parallel and spaced apart during the adsorption process), thereby transferring a cover plate 100 to the top of multiple positioning pins 21 on the support platform 1 by multiple suction cups 31. Then, the adsorption force of the multiple suction cups 31 on the cover plate 100 is released, the cover plate 100 falls, and each positioning pin 21 is inserted into the corresponding positioning hole on the cover plate 100, thereby achieving precise positioning of the cover plate 100. Then, each cylinder 34 drives the second positioning post 341 to extend the corresponding limiting post 32 (see Figure 3 The displacement structure lowers the suction plate 3, allowing multiple suction cups 31 to re-pick up the cover plate 100. Simultaneously, each second positioning post 341 is inserted into its corresponding positioning hole on the cover plate 100. This ensures that the cover plate 100 is precisely picked up onto the limiting post 32 and suction cups 31 during the re-pickup, guaranteeing the positioning accuracy between the cover plate 100 and the suction plate 3. Finally, the displacement structure moves the suction plate 3 and cover plate 100, releasing the suction force of the multiple suction cups 31 on the cover plate 100. The first positioning posts 33 then precisely place the cover plate 100 onto the housing. At this point, the multiple first positioning posts 33 achieve precise positioning between the suction plate 3 and the housing, ultimately realizing automatic and precise positioning of the cover plate 100 and the housing based on the positioning between the cover plate 100 and the suction plate 3.

[0043] In other words, the assembly device for battery casing provided by the present invention can automatically achieve precise positioning between the cover plate 100 and the casing through the displacement structure and suction cup 31, thereby improving assembly efficiency and meeting production needs.

[0044] It is easy to understand that when the cover plate 100 is placed on the first station 11, the positioning accuracy of the cover plate 100 relative to the suction plate 3 is relatively poor. However, the positioning pin 21 on the bracket 2 can achieve precise positioning of the cover plate 100, which provides the basic conditions for the suction cup 31 to pick up the cover plate 100 again, ensuring that the cover plate 100 can be smoothly inserted into the second positioning post 341, thereby ensuring the positioning accuracy between the cover plate 100 and the suction plate 3. In addition, through the transition effect of the first positioning post 33 on the suction plate 3, the precise positioning of the cover plate 100 and the shell is ultimately guaranteed.

[0045] For example, there can be four limiting posts 32, arranged at the four right angles of the suction plate 3. The number of positioning pins 21, cylinders 34, and second positioning posts 341 can all be two. The limiting posts 32, first positioning posts 33, and second positioning posts 341 are all perpendicular to the suction plate 3. Multiple cover plates 100 can be placed on the first workstation 11, and these cover plates 100 can be stacked together to improve work efficiency.

[0046] For example, suction cup 31 can be an accordion suction cup.

[0047] It should be noted that the cover plate 100 was coated with adhesive before being transferred to the housing. After the cover plate 100 was accurately transferred to the housing, it was then connected with bolts.

[0048] For example, the displacement structure can be a robot or a combination of a truss, translation structure and lifting structure.

[0049] Figure 4 yes Figure 1 A magnified view of a portion, such as Figure 4 As shown, the outer edge of the bracket 2 has a plurality of spaced pneumatic grippers 22, which are used to press the cover plate 100 so that the cover plate 100 fits onto the bracket 2.

[0050] In the above embodiment, the pneumatic gripper 22 opens before the lower cover plate 100 to avoid interfering with the placement of the cover plate 100 on the bracket 2. After placement, the cover plate 100 may get stuck while sliding down along the positioning pin 21. At this time, the pneumatic gripper 22 can press down the cover plate 100 until the cover plate 100 slides down to be in contact with the bracket 2.

[0051] Furthermore, the bracket 2 has a through-beam photoelectric switch 23, which is used to monitor the position of the cover plate 100 on the bracket 2, and the through-beam photoelectric switch 23 is electrically connected to a buzzer.

[0052] As is easily understood, the through-beam photoelectric switch 23 includes a transmitter and a receiver, with the light emitted by the generator reaching the receiver. If the cover plate 100 is in place, the receiver can receive the light signal normally. Conversely, if the receiver fails to receive the light signal normally, it will send a signal to the honey maker, and the buzzer will generate an alarm signal. At this time, it can remind the staff to manually operate the device to prevent the cover plate 100 from being jammed by the positioning pin 21.

[0053] In this embodiment, a lifting module 16 is installed in the first station 11. The lifting module 16 includes a servo motor, a lead screw and a top block. The output shaft of the servo motor is connected to the lead screw. One end of the lead screw is inserted into the top block. The top block is slidably arranged on the support platform 1 to drive the top block to push multiple cover plates 100 upward.

[0054] In the above embodiment, the rotation of the output shaft of the servo motor can drive the lead screw to rotate, thereby driving the top block to move upward, and in turn driving multiple cover plates 100 to move upward. That is to say, when a cover plate 100 is removed each time, the lifting module 16 will drive the top block to move upward by the thickness of a cover plate 100, thereby ensuring that the suction plate 3 picks up the cover plate 100 at the first station 11 at a consistent height each time.

[0055] See you again Figure 1 The bottom of the bracket 2 has a clearance notch for avoiding the cover plate 100. The bracket 2 is slidably arranged on the support platform 1 so that the bracket 2 can slide above the first station 11 or the second station 12.

[0056] In the above embodiment, the slidable arrangement of the bracket 2 allows for position adjustment, enabling multiple cover plates 100 to be placed simultaneously on the first workstation 11 and the second workstation 12, thereby improving work efficiency. The clearance notch prevents interference from the cover plates 100 during the sliding process of the bracket 2.

[0057] For example, when the suction cup 31 picks up the cover plate 100 on the first station 11, the bracket 2 can move to the second station 12 in advance, and the cover plate 100 on the second station 12 is located in the clearance notch of the bracket 2. When the suction cup 31 picks up the cover plate 100 on the second station 12, the bracket 2 can move to the first station 11 in advance, and the cover plate 100 on the first station 11 is also located in the clearance notch of the bracket 2.

[0058] Furthermore, the support platform 1 has two parallel and spaced slide rails 13, and both sides of the bracket 2 can be slidably arranged on the corresponding slide rails 13. The slide rails 13 guide the sliding of the bracket 2.

[0059] Specifically, the bracket 2 includes a connecting part 24 and two supporting parts 25. The two ends of the connecting part 24 are respectively connected to the two supporting parts 25 to form a U-shaped structure. The end of each supporting part 25 facing away from the connecting part 24 is slidably engaged with the corresponding slide rail 13. In addition, the connecting part 24 and each supporting part 25 have multiple spaced weight-reducing holes to reduce weight and facilitate the sliding of the bracket 2.

[0060] For example, a cylinder can be arranged on the support platform 1, and the piston rod of the cylinder is connected to the bracket 2 in a transmission manner, so that the position of the bracket 2 can be automatically adjusted by the cylinder.

[0061] In this embodiment, both the first station 11 and the second station 12 have multiple positioning columns 14, which are arranged vertically at intervals on the support platform 1.

[0062] In the above embodiments, the positioning space formed by the positioning columns 14 can not only position the multiple cover plates 100, but also prevent the cover plates 100 from falling off.

[0063] In one implementation of the present invention, the support assembly further includes a slide plate 15, which is slidably arranged on the support platform 1 such that the slide plate 15 and the bracket 2 are spaced apart, and the first station 11 and the second station 12 are located on the slide plate 15.

[0064] In the above embodiment, by sliding the slide plate 15, the first station 11 and the second station 12 can be completely separated from the bracket 2. At this time, the first station 11 and the second station 12 can be loaded with materials by the cover plate 100 at the same time, thereby improving the loading efficiency.

[0065] Figure 5 This is a flowchart of an assembly method for a battery casing provided by an embodiment of the present invention, such as... Figure 5 As shown, the assembly method is based on the above-described assembly apparatus, and the assembly method includes:

[0066] S1. Place a cover plate 100 on the first work station 11. Move the suction plate 3 through the displacement structure, so that the cover plate 100 is transferred to the top of the multiple positioning pins 21 of the support table 1 by multiple suction cups 31.

[0067] S2. Release the suction force of multiple suction cups 31 on the cover plate 100, the cover plate 100 falls down, and each positioning pin 21 is inserted into the corresponding positioning hole on the cover plate 100.

[0068] S3. The second positioning post 341 is driven by each cylinder 34 to extend the corresponding limiting post 32, and the suction plate 3 is moved down by the displacement structure, so that multiple suction cups 31 can pick up the cover plate 100 again. At the same time, each second positioning post 341 is inserted into the corresponding positioning hole on the cover plate 100.

[0069] S4. The suction plate 3 and the cover plate 100 are transferred by the displacement structure, the suction force of multiple suction cups 31 on the cover plate 100 is released, and the cover plate 100 is accurately placed on the shell by the positioning of the first positioning post 33.

[0070] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An assembly device for a battery casing, characterized in that, The assembly device includes a support assembly and a positioning assembly; The support assembly includes a support platform (1) and a bracket (2) for supporting the cover plate (100). The support platform (1) has a first station (11) and a second station (12). The first station (11) is used to place the cover plate (100). The top of the bracket (2) has a plurality of spaced positioning pins (21). The end of each positioning pin (21) facing away from the bracket (2) is tapered. The plurality of positioning pins (21) are used to be inserted into the positioning holes of the cover plate (100). The bracket (2) is located on the second station (12). The positioning assembly includes a suction plate (3) and a displacement structure. Multiple suction cups (31), multiple limiting posts (32), multiple first positioning posts (33), and multiple cylinders (34) are inserted into the bottom surface of the suction plate (3). The multiple suction cups (31) are spaced apart to adsorb the cover plate (100). The multiple limiting posts (32) are arranged in parallel and spaced apart to limit the cover plate (100) after it is adsorbed by the multiple suction cups (31). The end of each first positioning post (33) facing away from the suction plate (3) is tapered. The multiple first positioning posts (33) are inserted into the positioning holes of the housing to achieve positioning between the suction plate (3) and the housing. The output end of each cylinder (34) is coaxially connected to a second positioning post (341). Each second positioning post (341) is coaxially inserted into the corresponding limiting post (32) to extend out of the corresponding limiting post (32). The end of each second positioning post (341) facing away from the suction plate (3) is tapered. Multiple second positioning posts (341) are used to be inserted into the positioning holes of the cover plate (100) to realize the positioning between the suction plate (3) and the cover plate (100). The displacement structure is connected to the suction plate (3) to drive the suction plate (3) to lift and move. The limiting post, the first positioning post and the second positioning post are all perpendicular to the suction plate. The displacement structure moves the suction plate, thereby transferring the cover plate to the top of the multiple positioning pins on the support platform via multiple suction cups; the suction force of the multiple suction cups on the cover plate is released, the cover plate falls, and each positioning pin is inserted into the corresponding positioning hole on the cover plate; each cylinder drives the second positioning post to extend the corresponding limiting post, the displacement structure moves the suction plate down, so that the multiple suction cups pick up the cover plate again, and each second positioning post is inserted into the corresponding positioning hole on the cover plate; the displacement structure transfers the suction plate and the cover plate, releases the suction force of the multiple suction cups on the cover plate, and the cover plate is placed on the housing by the positioning of the first positioning post.

2. The assembly device for a battery casing according to claim 1, characterized in that, The outer edge of the bracket (2) has a plurality of spaced pneumatic grippers (22) for pressing the cover plate (100) so that the cover plate (100) fits onto the bracket (2).

3. The assembly device for a battery casing according to claim 2, characterized in that, The bracket (2) has a through-beam photoelectric switch (23) for monitoring the position of the cover plate (100) on the bracket (2), and the through-beam photoelectric switch (23) is electrically connected to a buzzer.

4. The assembly device for a battery casing according to claim 1, characterized in that, The bottom of the bracket (2) has a clearance notch for avoiding the cover plate (100), and the bracket (2) is slidably arranged on the support platform (1) so that the bracket (2) can slide above the first work station (11) or the second work station (12).

5. An assembly device for a battery casing according to claim 4, characterized in that, The support platform (1) has two parallel and spaced slide rails (13), and both sides of the bracket (2) can be slidably arranged on the corresponding slide rails (13).

6. An assembly device for a battery casing according to claim 5, characterized in that, The bracket (2) includes a connecting part (24) and two supporting parts (25). The two ends of the connecting part (24) are respectively connected to the two supporting parts (25) to form a U-shaped structure. The end of each supporting part (25) facing away from the connecting part (24) is slidably engaged with the corresponding slide rail (13).

7. The assembly device for a battery casing according to claim 4, characterized in that, Both the first workstation (11) and the second workstation (12) have multiple positioning columns (14), and the multiple positioning columns (14) are arranged vertically at intervals on the support platform (1).

8. An assembly device for a battery casing according to claim 4, characterized in that, The support assembly also includes a slide plate (15), which is slidably arranged on the support platform (1) such that the slide plate (15) and the bracket (2) are spaced apart, and the first work station (11) and the second work station (12) are located on the slide plate (15).

9. An assembly device for a battery casing according to any one of claims 1-8, characterized in that, The first workstation (11) is equipped with a lifting module (16), which includes a servo motor, a lead screw and a top block. The output shaft of the servo motor is connected to the lead screw. One end of the lead screw is inserted into the top block. The top block is slidably arranged on the support platform (1) to drive the top block to push multiple cover plates (100) up.

10. A method for assembling a battery casing, characterized in that, The assembly method is based on the assembly apparatus according to any one of claims 1-9, and the assembly method includes: A cover plate (100) is placed on the first work station (11), and the suction plate (3) is moved by the displacement structure, so that a cover plate (100) is transferred to the top of the multiple positioning pins (21) of the support platform (1) by multiple suction cups (31); Release the suction force of the multiple suction cups (31) on the cover plate (100), the cover plate (100) falls down, and each of the positioning pins (21) is inserted into the corresponding positioning hole on the cover plate (100); The second positioning post (341) is driven by each of the cylinders (34) to extend out of the corresponding limiting post (32), and the suction plate (3) is moved down by the displacement structure, so that the multiple suction cups (31) can pick up the cover plate (100) again. At the same time, each of the second positioning posts (341) is inserted into the corresponding positioning hole on the cover plate (100). The displacement structure moves the suction plate (3) and the cover plate (100) to release the suction force of the multiple suction cups (31) on the cover plate (100), and the cover plate (100) is accurately placed on the housing by the positioning of the first positioning post (33).

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