Square aluminum shell lithium battery in-shell pre-spot welding device

Abstract

The invention relates to a square aluminum shell lithium battery in-shell pre-spot welding device which comprises a working table, a first assembling mechanism and a second assembling mechanism which alternately complete battery assembling are symmetrically arranged on the working table, and each of the first assembling mechanism and the second assembling mechanism comprises a pushing assembly, a fixing assembly and an air exhaust assembly which are sequentially arranged on the working table; the air exhaust assembly comprises an air exhaust shell used for adsorbing air extruded when a battery cell slides into an aluminum shell, a discharging assembly used for discharging an assembled battery is arranged on the fixing assembly, and the fixing assembly is used for fixing the aluminum shell. A pushing assembly in the first assembling mechanism drives an air exhaust shell in the second assembling mechanism to move to the aluminum shell while pushing the battery cell and the aluminum shell to be assembled, and a pushing assembly in the second assembling mechanism drives an air exhaust shell in the first assembling mechanism to be separated from the aluminum shell while pushing the battery cell and the aluminum shell to be assembled, so that the assembling efficiency is improved; and the resistance when the battery cell is contacted with the aluminum shell is reduced, so that the assembly is smoother.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage battery equipment, and more particularly to a pre-spot welding device for inserting a square aluminum shell lithium battery. Background Art

[0002] In battery manufacturing, inserting cells into aluminum shells is a critical process that directly impacts battery performance and quality. Currently, most assembly methods involve manually placing cells into aluminum shells one by one. This results in the quality of assembly being affected by the maturity of manual labor. Cells are also prone to scratches when inserted into the shell opening, leading to cell damage.

[0003] Chinese patent publication number CN217983455U discloses a square battery cell shell insertion tool, comprising a clamping assembly and a shell insertion assembly. The clamping assembly comprises a base plate, a lifting plate, and an adjustment rod. The base plate is provided with a plurality of vertically arranged positioning posts, each of which is penetrated by the lifting plate. The adjustment rod is used to drive the lifting plate toward the base plate so that the lifting plate and the base plate can clamp the square aluminum shell together. The shell insertion assembly comprises a push-out block, a loading plate, and a plurality of guide plates. Each guide plate is respectively provided on the base plate so that a guide hole is formed between each guide plate and is aligned with the opening of the square aluminum shell. The loading plate is provided on the base plate and is located at the end of the guide hole away from the lifting plate. The loading plate is used to support the battery cell, and the push-out block is used to push the battery cell on the loading plate through the guide hole into the square aluminum shell. In this way, it is used to assist in the shell insertion operation of the battery cell, enabling the battery cell to be easily and accurately loaded into the square aluminum shell, and is also compatible with the shell insertion operation of battery cells of different sizes.

[0004] However, the inventors have found that during the actual assembly process, when the battery core is installed in the aluminum shell, the battery core will squeeze the air in the aluminum shell, causing the air to flow out from the gap between the two, increasing the resistance during assembly, resulting in an unsmooth assembly and prone to scratches and other problems. Summary of the Invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology and provide a square aluminum shell lithium battery pre-spot welding device, which realizes the effect of alternating assembly through a first assembly mechanism and a second assembly mechanism, thereby improving the assembly efficiency. The vacuum assembly is used to absorb air while the battery cell is loaded into the aluminum shell, thereby reducing the resistance when the battery cell contacts the aluminum shell, making the assembly smoother and improving the battery quality.

[0006] The technical solutions of the present invention are as follows:

[0007] A pre-spot welding device for inserting a square aluminum shell lithium battery into a shell comprises a workbench, on which a first assembly mechanism and a second assembly mechanism for alternately completing battery assembly are symmetrically arranged, the first assembly mechanism and the second assembly mechanism both comprise a pushing component, a fixing component and an exhaust component sequentially arranged on the workbench, the exhaust component comprising an exhaust shell for absorbing gas squeezed out when a battery cell slides into the aluminum shell, the fixing component is provided with a blanking component for blanking the assembled battery, the fixing component is used to fix the aluminum shell, the pushing component in the first assembly mechanism pushes the battery cell and the aluminum shell for assembly while driving the exhaust shell in the second assembly mechanism to move to the aluminum shell, the pushing component in the second assembly mechanism pushes the battery cell and the aluminum shell for assembly while driving the exhaust shell in the first assembly mechanism to separate from the aluminum shell.

[0008] As a preferred embodiment, a single group of the pushing assembly includes a motor fixedly arranged on the workbench, a first screw rod rotatably arranged on the workbench, a fixed table fixedly arranged on the workbench, a push plate slidably arranged on the workbench, and a sliding hole opened on the push plate, the sliding hole cooperates with the first screw rod, and the battery cell cooperates with the fixed table.

[0009] As a preference, a single group of the fixed components includes a guide frame fixedly arranged on the workbench, a support plate fixedly arranged on the guide frame, and a plurality of rollers rotatably arranged on the upper and lower sides of the support plate, and the guide frame cooperates with the aluminum shell.

[0010] As a preferred embodiment, a single group of the vacuum assembly also includes a supporting platform fixedly arranged on the workbench, a second screw rod symmetrically rotatably arranged on the workbench, a slider fixedly arranged on the vacuum shell, and a support rod fixedly arranged in the vacuum shell, the slider cooperates with the second screw rod, and the vacuum shell cooperates with the supporting platform.

[0011] As a preferred embodiment, a single group of the blanking assembly includes a fixed rod fixedly set on the exhaust shell, an empty slot opened on the fixed rod, a plurality of limit blocks fixedly set on the empty slot, a one-way tooth rotatably set on the limit block, a spring fixedly connected between the one-way tooth and the empty slot, and a gear fixedly set on the roller shaft, and the one-way tooth cooperates with the gear.

[0012] Preferably, the first screw rod in the first assembly mechanism is transmission-connected to the second screw rod in the second assembly mechanism and their threads are directed in opposite directions; the first screw rod in the second assembly mechanism is transmission-connected to the second screw rod in the first assembly mechanism and their threads are directed in the same direction.

[0013] As a preference, the roller is provided with a rubber layer and matched with the aluminum shell.

[0014] As a preference, a through slot is provided on the guide frame and the through slot cooperates with the push plate.

[0015] The beneficial effects of the present invention are

[0016] The present invention is provided with a first assembly mechanism and a second assembly mechanism, through which the battery core and the aluminum shell are alternately assembled. During the assembly process, the gas in the aluminum shell is sucked out by the vacuum shell before the battery core enters the aluminum shell, so that the resistance and friction when the battery core enters are greatly reduced, thereby reducing the possibility of damage to the battery core.

[0017] In summary, the present invention has the advantages of good assembly effect and high efficiency, and is suitable for the technical field of energy storage battery equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a square aluminum shell lithium battery shell pre-spot welding device;

[0020] Figure 2 It is a schematic diagram of the structure of the pushing component, the fixing component and the exhaust component;

[0021] Figure 3 Schematic diagram of the structure of the through slot;

[0022] Figure 4 It is a structural diagram of the slider;

[0023] Figure 5 Schematic diagram of the structure of the second screw rod;

[0024] Figure 6 Schematic diagram of the state where the battery cell and aluminum shell are assembled to adsorb gas and drive another set of exhaust shells to move;

[0025] Figure 7 This is a schematic diagram of the state when the second assembly mechanism's battery core moves while driving the first assembly mechanism's exhaust housing to move;

[0026] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0027] Figure 9 This is a schematic diagram of the state when the one-way teeth drive the gear and roller to rotate;

[0028] Figure 10 for Figure 9 Enlarged view of point B in the middle;

[0029] Figure numerals: 1 workbench, 2 first assembly mechanism, 3 second assembly mechanism, 4 pushing assembly, 41 motor, 42 first screw rod, 43 fixed platform, 44 push plate, 45 slide hole, 5 fixed assembly, 51 guide frame, 52 support plate, 53 roller, 6 exhaust assembly, 61 exhaust shell, 62 bearing platform, 63 second screw rod, 64 slider, 65 push rod, 7 battery cell, 8 aluminum shell, 9 blanking assembly, 91 fixed rod, 92 empty slot, 93 limit block, 94 one-way tooth, 95 spring, 96 gear, 10 through slot. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings.

[0031] Example 1

[0032] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0033] like Figure 1 and Figure 10 As shown, a square aluminum shell lithium battery shell pre-spot welding device includes a workbench 1, on which a first assembly mechanism 2 and a second assembly mechanism 3 for alternately completing battery assembly are symmetrically arranged. The first assembly mechanism 2 and the second assembly mechanism 3 both include a pushing component 4, a fixing component 5 and an exhaust component 6 sequentially arranged on the workbench 1. The exhaust component 6 includes an exhaust shell 61 for absorbing the gas squeezed out when the battery cell 7 is loaded into the aluminum shell 8. The fixing component 5 is provided with a blanking component 9 for blanking the assembled battery. The fixing component 5 is used to fix the aluminum shell 8. The pushing component 4 in the first assembly mechanism 2 pushes the battery cell 7 to assemble with the aluminum shell 8 while driving the exhaust shell 61 in the second assembly mechanism 3 to move to the aluminum shell 8. The pushing component 4 in the second assembly mechanism 3 pushes the battery cell 7 to assemble with the aluminum shell 8 while driving the exhaust shell 61 in the first assembly mechanism 2 to separate from the aluminum shell 8. When the battery assembly is completed, the battery is placed in a spot welding machine for spot welding by a robot or manually.

[0034] It is worth mentioning that Figure 2 and Figure 6As shown, a single group of pushing components 4 includes a motor 41 fixedly arranged on the workbench 1, a first screw rod 42 rotatably arranged on the workbench 1, a fixed platform 43 fixedly arranged on the workbench 1, a push plate 44 slidably arranged on the workbench 1, and a sliding hole 45 opened on the push plate 44. The sliding hole 45 cooperates with the first screw rod 42, and the battery cell 7 cooperates with the fixed platform 43. Among them, the initial positions of the push plates 44 in the two groups of pushing components 4 are both located at the starting end near the motor 41. The battery cell 7 and the aluminum shell 8 are placed in the fixed platform 43 manually or by a robot. During use, after the battery cell 7 and the aluminum shell 8 are placed, the motor 41 in the first assembly mechanism 2 is started, driving the first screw rod 42 to rotate, driving the push plate 44 to push the battery cell 7 to move and assemble it with the aluminum shell 8.

[0035] It should be emphasized that if Figure 2 and Figure 6 As shown, the single-group fixing assembly 5 includes a guide frame 51 fixedly set on the workbench 1, a support plate 52 fixedly set on the guide frame 51, and a plurality of rollers 53 rotatably set on the upper and lower sides of the support plate 52. The guide frame 51 cooperates with the aluminum shell 8, wherein the aluminum shell 8 is placed between the rollers 53 manually or by a robot. When in use, when the push plate 44 pushes the battery cell 7 into the aluminum shell 8, the guide frame 51 aligns the battery cell 7 with the aluminum shell 8, thereby guiding the battery cell 7 and reducing the collision between the battery cell 7 and the aluminum shell 8, which may cause damage.

[0036] It should be further explained that if Figure 6As shown, the single-group exhaust assembly 6 also includes a carrier 62 fixedly arranged on the workbench 1, a second screw 63 symmetrically rotated on the workbench 1, a slider 64 fixedly arranged on the exhaust shell 61, and a push rod 65 fixedly arranged in the exhaust shell 61. The slider 64 cooperates with the second screw 63, and the exhaust shell 61 cooperates with the carrier 62. Among them, the initial position of the exhaust shell 61 in the first assembly mechanism 2 is located at the aluminum shell 8, and the initial position of the exhaust shell in the second assembly structure 3 is located away from the aluminum shell 8. At the starting end of the second screw rod 63, a negative pressure device is connected to the air extraction shell 61. When in use, when the motor 41 in the first assembly mechanism 2 drives the push plate 44 to push the battery core 7 and the aluminum shell 8 to be assembled, the first screw rod 42 drives the second screw rod 63 in the second assembly mechanism 3 to rotate, driving the air extraction shell 61 to move to the aluminum shell 8 of the group. At this time, when the battery core 7 in the first assembly mechanism 2 moves to 1cm-2cm away from the end face of the aluminum shell 8, the air extraction shell 61 is exhausted, so that the battery core 7 will be The gas in the aluminum shell 8 is sucked out, allowing the battery cell 7 to enter smoothly. At the same time, when the battery cell 7 is completely entering the aluminum shell 8, the exhaust shell 61 always sucks out the air in the aluminum shell 8, so that the resistance of the battery cell 7 to enter the aluminum shell 8 is reduced, and the force of squeezing the air is reduced. In this way, the battery cell 7 can be made to have less resistance and friction when entering the aluminum shell 8, which greatly reduces the risk of damage to the battery cell 7. At this time, the battery cell 7 in the first assembly mechanism 2 is assembled with the aluminum shell 8. The motor 41 in the second assembly mechanism 3 drives the first screw rod 42 to drive the second screw rod 63 in the first assembly mechanism 2 to rotate, so that the push plate 44 in the second assembly mechanism 3 pushes the battery cell 7 and the aluminum shell 8 to be assembled, and at the same time drives the exhaust shell 61 in the first assembly mechanism 2 to move to the side away from the aluminum shell 8, and the exhaust shell 61 is separated from the assembled battery, making it convenient to remove the aluminum shell 8. Subsequently, the push plate 44 in the first assembly mechanism 2 drives the exhaust shell 61 in the second assembly mechanism 3 to separate from the aluminum shell 8 when resetting, and the assembly of the battery cell 7 and the aluminum shell 8 is completed alternately, thereby improving the assembly efficiency.

[0037] It is worth mentioning that Figures 7 to 10As shown, the single-group blanking assembly 9 includes a fixing rod 91 fixedly set on the vacuum shell 61, an empty slot 92 opened on the fixing rod 91, a plurality of limit blocks 93 fixedly set on the empty slot 92, a one-way tooth 94 rotatably set on the limit block 93, a spring 95 fixedly connected between the one-way tooth 94 and the empty slot 92, and a gear 96 fixedly set on the roller shaft 53. The one-way tooth 94 cooperates with the gear 96. During use, when the vacuum shell 61 wraps the aluminum shell 8, the one-way tooth 94 contacts the teeth on the gear 96 and rotates toward the empty slot 92 under the action of the spring 95. Therefore, the gear 96 will not rotate. When the battery cell 7 and the aluminum shell 8 are assembled, the vacuum shell 61 is separated from the aluminum shell 8, the one-way tooth 94 drives the gear 96 to rotate, and the gear 96 drives the roller shaft 53 to rotate. The roller shaft 53 moves the assembled battery to the supporting platform 62 for easy blanking.

[0038] Further, such as Figure 5 As shown, the first screw rod 42 in the first assembly mechanism 2 is transmission-connected with the second screw rod 63 in the second assembly mechanism 3 and their threads are in opposite directions, while the first screw rod 42 in the second assembly mechanism 3 is transmission-connected with the second screw rod 63 in the first assembly mechanism 2 and their threads are in the same direction.

[0039] In addition, if Figure 7 and Figure 8 As shown, a rubber layer is provided on the roller 53 and cooperates with the aluminum shell 8. Due to the good viscosity and flexibility of rubber, the rubber layer can enable the roller 53 to better unload the aluminum shell 8 when rolling without damaging the aluminum shell 8.

[0040] Further, such as Figure 3 As shown, a through slot 10 is formed on the guide frame 51 and the through slot 10 cooperates with the push plate 44 .

[0041] Working process

[0042] After the battery core 7 and the aluminum shell 8 are placed, the motor 41 in the first assembly mechanism 2 is started, driving the first screw rod 42 to rotate, driving the push plate 44 to push the battery core 7 to move, and while assembling with the aluminum shell 8, the first screw rod 42 drives the second screw rod 63 in the second assembly mechanism 3 to rotate, driving the vacuum shell 61 to move to the aluminum shell 8 of this group. At this time, when the battery core 7 in the first assembly mechanism 2 moves to 1cm-2cm away from the end face of the aluminum shell 8, the vacuum shell 61 is exhausted, so that when the battery core 7 enters the aluminum shell 8, the gas in the aluminum shell 8 is sucked out, so that the battery core 7 can enter smoothly. At the same time, when the battery core 7 is completely entering the aluminum shell 8, the vacuum shell 61 always sucks out the air in the aluminum shell 8, so that the resistance of the battery core 7 to enter the aluminum shell 8 becomes smaller, squeezing the air. The force becomes smaller. In this way, the resistance and friction of the battery cell 7 when entering the aluminum shell 8 are small, which greatly reduces the possibility of damaging the battery cell 7. At this time, the battery cell 7 and the aluminum shell 8 in the first assembly mechanism 2 are assembled. The motor 41 in the second assembly mechanism 3 drives the first screw rod 42 to drive the second screw rod 63 in the first assembly mechanism 2 to rotate, so that the push plate 44 in the second assembly mechanism 3 pushes the battery cell 7 and the aluminum shell 8 to be assembled while driving the vacuum shell 61 in the first assembly mechanism 2 to move to the side away from the aluminum shell 8. The vacuum shell 61 is separated from the assembled battery. During separation, the one-way tooth 94 drives the gear 96 to rotate, and the gear 96 drives the roller 53 to rotate. The roller 53 moves the assembled battery to the supporting platform 62 for easy unloading.

[0043] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the invention.

[0044] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0045] The above description in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. A square aluminum shell lithium battery shell pre-spot welding device, comprising a workbench (1), characterized in that: The workbench (1) is symmetrically provided with a first assembly mechanism (2) and a second assembly mechanism (3) for alternately completing battery assembly. The first assembly mechanism (2) and the second assembly mechanism (3) both comprise a pushing assembly (4), a fixing assembly (5) and an exhaust assembly (6) sequentially provided on the workbench (1). The exhaust assembly (6) comprises an exhaust shell (61) for absorbing gas extruded when the battery cell (7) is installed into the aluminum shell (8). The fixing assembly (5) is provided with a blanking assembly (9) for blanking the assembled battery. The fixing assembly (5) is used to fix the aluminum shell (8). The pushing assembly (4) in the first assembly mechanism (2) pushes the battery cell (7) and the aluminum shell (8) to be assembled, while driving the exhaust shell (61) in the second assembly mechanism (3) to move to the aluminum shell (8). The pushing assembly (4) in the second assembly mechanism (3) pushes the battery cell (7) and the aluminum shell (8) to be assembled, while driving the exhaust shell (61) in the first assembly mechanism (2) to separate from the aluminum shell (8).

2. A square aluminum shell lithium battery pre-spot welding device according to claim 1, characterized in that: The single group of the pushing assembly (4) comprises a motor (41) fixedly arranged on the workbench (1), a first screw rod (42) rotatably arranged on the workbench (1), a fixed platform (43) fixedly arranged on the workbench (1), a push plate (44) slidably arranged on the workbench (1), and a sliding hole (45) provided on the push plate (44); the sliding hole (45) cooperates with the first screw rod (42), and the battery core (7) cooperates with the fixed platform (43).

3. The square aluminum shell lithium battery pre-spot welding device according to claim 2, characterized in that: A single set of the fixed assembly (5) comprises a guide frame (51) fixedly arranged on the workbench (1), a support plate (52) fixedly arranged on the guide frame (51), and a plurality of rollers (53) rotatably arranged on the upper and lower sides of the support plate (52); the guide frame (51) is matched with the aluminum shell (8).

4. The square aluminum shell lithium battery pre-spot welding device according to claim 2, characterized in that: The single set of the exhaust assembly (6) further includes a bearing platform (62) fixedly arranged on the workbench (1), a second screw rod (63) symmetrically rotatably arranged on the workbench (1), a slider (64) fixedly arranged on the exhaust shell (61), and a support rod (65) fixedly arranged in the exhaust shell (61); the slider (64) cooperates with the second screw rod (63), and the exhaust shell (61) cooperates with the bearing platform (62).

5. The square aluminum shell lithium battery pre-spot welding device according to claim 1, characterized in that: A single set of the blanking assembly (9) includes a fixing rod (91) fixedly arranged on the exhaust shell (61), a slot (92) provided on the fixing rod (91), a plurality of limit blocks (93) fixedly arranged on the slot (92), a one-way tooth (94) rotatably arranged on the limit block (93), a spring (95) fixedly connected between the one-way tooth (94) and the slot (92), and a gear (96) fixedly arranged on the roller shaft (53), wherein the one-way tooth (94) cooperates with the gear (96).

6. The square aluminum shell lithium battery pre-spot welding device according to claim 4, characterized in that: The first screw rod (42) in the first assembly mechanism (2) is connected to the second screw rod (63) in the second assembly mechanism (3) in a transmission manner, and the threads of the two are in opposite directions; the first screw rod (42) in the second assembly mechanism (3) is connected to the second screw rod (63) in the first assembly mechanism (2) in a transmission manner, and the threads of the two are in the same direction.

7. The square aluminum shell lithium battery pre-spot welding device according to claim 3, characterized in that: The roller shaft (53) is provided with a rubber layer and is matched with the aluminum shell (8).

8. The square aluminum shell lithium battery pre-spot welding device according to claim 3, characterized in that: A through slot (10) is provided on the guide frame (51), and the through slot (10) is matched with the push plate (44).

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