A pressure shell device for battery casting and welding

Abstract

The present invention discloses a shell pressing device for battery casting welding, which includes a liftable top plate, a downward pressing mechanism for pressing the battery body downward, and a welding mold. Two L-shaped plates are fixedly connected to the top plate. The short sides of the two L-shaped plates are located at the bottom of the top plate, and the tops of the two short sides carry a battery support plate. There will be a certain gap between the downward pressing mechanism of the present invention and the battery body on the top of the battery support plate. Therefore, the downward pressing mechanism will not hinder the battery support plate from being translated and carried onto the short sides of the two L-shaped plates. And when the battery body descends and contacts the boss on the top of the welding mold, the two L-shaped plates can continue to descend. At this time, the battery body cannot continue to descend because it contacts the boss, while the downward pressing mechanism can continue to descend. Therefore, the pressing plate mechanism can press the outer shell of the battery body, and then press and fix the battery body to ensure the firm connection between the electrode plate at the bottom of the battery body and the bus bar, and ensure the subsequent welding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to a shell pressing device for casting and welding of storage batteries. Background Art

[0002] A battery usually consists of multiple plates. A typical battery usually contains one or more positive plates and negative plates, which are separated by an electrolyte or a separator and stacked in a specific manner.

[0003] For lead-acid batteries, the rated voltage of each single battery is 2 volts. A typical 12-volt automotive battery is composed of 6 single batteries connected in series. For series connection, multiple plates of the battery need to be welded to the bus bar. In the existing process, lead liquid is generally used for welding.

[0004] During the welding process of battery plates, usually, the battery body needs to be placed on a battery support plate, and then the battery support plate is translated to a lifting mechanism at the top of a lead pot by a pushing mechanism. In order to ensure the welding quality of the battery plates and the bus bar, a pressing mechanism is provided on the lifting mechanism to press the battery body to ensure the stability after the connection of the battery plates and the bus bar. The pressing mechanism can be a liftable mechanism or a non-liftable mechanism.

[0005] When the pressing mechanism is a liftable mechanism such as a cylinder, if there is no need to press the battery body, the pressing end of the cylinder will rise. Therefore, when the battery support plate is translated to the lifting mechanism at the top of the lead pot, the cylinder will not interfere with the movement of the battery body. However, during lead welding, the temperature is relatively high, up to 200 degrees Celsius at most, and liftable mechanisms such as cylinders are prone to damage in a high-temperature environment and need to be frequently repaired, which affects the casting and welding efficiency.

[0006] When the pressing mechanism is a non-liftable mechanical structure such as a pressing plate, although it has a good service life, it cannot perform lifting movement. When the battery body is translated to the lifting mechanism at the top of the lead pot by the battery support plate, the pressing plate will hinder the movement of the battery body. Moreover, due to the limited space on the lifting mechanism, it is impossible to combine the mechanical structure and the lifting structure. Therefore, there is an urgent need for a shell pressing device that can neither interfere with the movement of the battery body nor perform a pressing operation on the battery body while ensuring stability without the pressing mechanism itself performing a lifting movement. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a shell pressing device for casting and welding of storage batteries. By setting a boss and an L-shaped plate, when the battery body enters the L-shaped plate, it will not be hindered by the pressing mechanism, and during welding, the pressing mechanism will press and fix the battery body to ensure the welding quality.

[0008] Technical solution: The present invention provides a pressing device for battery casting welding, which includes a liftable top plate, a pressing mechanism for pressing the battery body downward, and a welding die. Two L-shaped plates are fixedly connected to the top plate. The short sides of the two L-shaped plates are located at the bottom of the top plate, and the tops of the two short sides carry a battery support plate. The battery body is located on top of the battery support plate. The welding die is located at the bottom of the battery support plate. A boss is provided on the top of the welding die, and the boss is located between the two L-shaped plates. The pressing mechanism is located between the two L-shaped plates and is fixedly connected to the top plate. The distance between the pressing mechanism and the battery body is less than the height of the boss.

[0009] Further, the pressing mechanism includes two connecting rods fixed to the top plate and a pressing shell plate connected to the connecting rods. The distance between the pressing shell plate and the battery body is less than the height of the boss.

[0010] Further, a height adjustment mechanism is also provided between the connecting rod and the pressing shell plate. The height adjustment mechanism includes an adjustment plate sleeved on the two connecting rods. Two screw rods fixed by first nuts are inserted through the adjustment plate. The bottoms of the two screw rods are connected to the pressing shell plate. Springs are sleeved on the two screw rods between the pressing shell plate and the adjustment plate.

[0011] Preferably, external connection threads are provided on the peripheries of the two connecting rods, and second nuts are connected to the two connecting rods at the top and bottom of the adjustment plate through the connection threads.

[0012] Preferably, a positioning pin is fixedly connected to the bottom of the battery support plate, and a positioning hole is provided at the position of the welding die corresponding to the positioning pin.

[0013] Preferably, a battery slot is provided on the battery support plate, and the electrode plates of the battery body pass through the battery slot and are located at the bottom of the battery support plate.

[0014] Preferably, a bus bar is fixedly connected to the position of the welding die corresponding to the electrode plate of the battery body.

[0015] Preferably, a first lifting guide rod is fixedly connected to the top of the top plate.

[0016] Preferably, a second lifting guide rod is fixedly connected to the welding die. Beneficial effects

[0017] There will be a certain gap between the pressing mechanism of the present invention and the battery body on the top of the battery tray. Therefore, the pressing mechanism will not hinder the battery tray from being translated and carried on the short sides of the two L-shaped plates. And when the battery body descends and contacts the boss on the top of the welding die, the two L-shaped plates can continue to descend. At this time, the battery body cannot continue to descend because it contacts the boss, while the pressing mechanism can continue to descend. So, it can make the pressing plate mechanism press the outer shell of the battery body, and then press and fix the battery body to ensure the stability of the connection between the electrode plate at the bottom of the battery body and the bus bar, and ensure the subsequent welding quality.

[0018] The two screws of the present invention can be lifted and lowered, so that the height of the pressure shell plate can be adjusted by adjusting the heights of the two screws, and at the same time, the compression state of the spring can be changed, so that when the pressure shell plate presses the shell of the battery body, its buffering performance meets the requirements.

[0019] The present invention changes the height of the adjusting plate by adjusting the height of the second nut on the connecting rod, and then makes the initial height of the pressure shell plate located at the specified position.

[0020] During the process of the battery tray of the present invention descending, the positioning pin will be inserted into the positioning hole, thereby improving the stability after the battery tray is matched with the welding die.

[0021] The battery body of the present invention is connected to the battery tray through the battery card slot. The electrode plate of the battery body can pass through the battery card slot and be located at the bottom of the battery tray, waiting to be welded after inserting the bus bar subsequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall schematic diagram of the present invention.

[0023] Figure 2 is for the present invention Figure 1 is the enlarged schematic diagram of part A of the present invention.

[0024] Figure 3 is for the present invention Figure 1 is the enlarged schematic diagram of part B of the present invention.

[0025] Figure 4 is the schematic diagram of the battery tray of the present invention.

[0026] Figure 5 is the schematic diagram of the connection of the second nut, adjusting plate, connecting rod and connecting thread of the present invention.

[0027] In the figure: 1. Lead pot; 2. Welding die; 3. Battery carrier plate; 4. Battery body; 5. Second nut; 6. Spring; 7. First lifting guide rod; 8. Top plate; 9. Pressing shell plate; 10. Second lifting guide rod; 11. Screw rod; 12. First nut; 13. Adjusting plate; 14. Connecting rod; 15. Connecting thread; 18. Battery card slot; 19. Positioning pin; 20. Positioning hole; 21. L-shaped plate; 22. Boss; 23. Bus bar. Detailed implementation mode

[0028] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0029] Embodiment 1:

[0030] As Figures 1-5 , a pressing shell device for battery casting and welding, includes a liftable top plate 8, a pressing mechanism for pressing the battery body 4 below, and a welding die 2. Two L-shaped plates 21 are fixedly connected to the top plate 8. The short sides of the two L-shaped plates 21 are located at the bottom of the top plate 8, and the tops of the two short sides carry a battery carrier plate 3. The battery body 4 is located on top of the battery carrier plate 3. The welding die 2 is located at the bottom of the battery carrier plate 3. A boss 22 is provided on the top of the welding die 2. The boss 22 is located between the two L-shaped plates 21. The pressing mechanism is located between the two L-shaped plates 21 and is fixedly connected to the top plate 8. The distance between the pressing mechanism and the battery body 4 is less than the height of the boss 22.

[0031] In this embodiment, the battery body 4 is connected to the battery carrier plate 3. The pushing mechanism on the production line in the production workshop can apply a force to the battery carrier plate 3, so that the battery carrier plate 3 moves and is carried on the tops of the short sides of the two L-shaped plates 21. During this process, there will be a certain gap between the pressing mechanism and the battery body 4 on top of the battery carrier plate 3. Therefore, the pressing mechanism will not hinder the battery carrier plate 3 from being translated and carried on the short sides of the two L-shaped plates 21. And because the distance between the pressing mechanism and the battery body 4 is less than the height of the boss 22, when the battery body 4 contacts the boss 22 on the top of the welding die 2 due to the descent of the top plate 8, the top plate 8 can continue to descend, thereby driving the two L-shaped plates 21 to continue to descend. At this time, the battery body 4 cannot continue to descend because it contacts the boss 22, while the pressing mechanism can continue to descend, so that the pressing plate mechanism presses the outer shell of the battery body 4, and then presses and fixes the battery body 4 to ensure the welding quality.

[0032] The pressing mechanism includes two connecting rods 14 fixed to the top plate 8. An adjusting plate 13 is sleeved on the two connecting rods 14. Two screw rods 11 are inserted through the adjusting plate 13. The bottoms of the two screw rods 11 are connected with a pressing shell plate 9. Springs 6 are sleeved on the two screw rods 11. The springs 6 are located between the pressing shell plate 9 and the adjusting plate 13. First nuts 12 are connected to the peripheries of the two screw rods 11 at the top of the adjusting plate 13.

[0033] The two screw rods 11 can move up and down to adjust their own heights, so as to adjust the height of the pressing shell plate 9, and further change the stretching situation of the springs 6, so that the buffering performance meets the requirements when the pressing shell plate 9 presses the shell of the battery body 3. Moreover, after the positions of the screw rods 11 are determined, the height positions of the screw rods 11 can be fixed by tightening the first nuts 12 to ensure the position stability of the pressing shell plate 9 and the springs 6.

[0034] External connection threads 15 are provided on the peripheries of the two connecting rods 14. Second nuts 5 are connected to the peripheries of the two connecting rods 14 at the top and bottom of the adjusting plate 13.

[0035] Two second nuts 5 are connected to a single connecting rod 14 through the connection threads 15. The two second nuts 5 are respectively located at the top and bottom of the adjusting plate 13, so that the adjusting plate 13 can be clamped and fixed. Moreover, by adjusting the positions of the second nuts 5 on the connecting rods 14, the height of the adjusting plate 13 can be changed, and further the height of the pressing shell plate 9 can be changed, so that the initial height of the pressing shell plate 9 is located at a specified position.

[0036] A positioning pin 19 is fixedly connected to the bottom of the battery tray 3. A positioning hole 20 is provided at the position of the welding die 2 corresponding to the positioning pin 19.

[0037] During the descent of the battery tray 3, the positioning pin 19 will be inserted into the positioning hole 20, thereby improving the accuracy after the battery tray 3 and the welding die 2 are matched, and avoiding the horizontal displacement of the two relative to each other after the battery tray 3 and the welding die 2 are matched.

[0038] A battery slot 18 is provided on the battery tray 3. The electrode plate of the battery body 4 passes through the battery slot 18 and is located at the bottom of the battery tray 3.

[0039] The bottom of the battery body 4 has a step, and the step can be inserted into the battery slot 18, thereby connecting the battery body 4 and the battery tray 3. Moreover, the electrode plate of the battery body 4 can pass through the battery slot 18 and be located at the bottom of the battery tray 3 for subsequent welding.

[0040] A bus bar 23 is fixedly connected to the position of the convex platform 22 of the welding die 2 corresponding to the electrode plate of the battery body 4.

[0041] After the battery tray 3 is connected and fitted with the boss 22 of the welding die 2, the electrode plates of the battery body 4 will be inserted into the bus bar 23 for subsequent welding.

[0042] A first lifting guide rod 7 is fixedly connected to the top of the top plate 8.

[0043] The first lifting guide rod 7 can be connected to a workshop driving mechanism such as a hydraulic cylinder, so that the hydraulic cylinder can drive the top plate 8 to perform lifting operations through the first lifting guide rod 7, thereby realizing the lifting operations of the structures connected to the top plate 8.

[0044] A second lifting guide rod 10 is fixedly connected to the welding die 2.

[0045] Under the action of the workshop driving mechanism, the second lifting guide rod 10 can drive the welding die 2 to perform lifting operations.

[0046] Working principle: The battery body 4 can be connected to the battery tray 3 through the battery card slot 18, and the pushing mechanism in the workshop can apply a force to the battery tray 3, so that the battery tray 3 moves and is carried on the tops of the short sides of the two L-shaped plates 21. During this process, there will be a certain gap between the pressing mechanism and the battery body 4. Therefore, the pressing mechanism will not hinder the battery tray 3 from being carried on the short sides of the two L-shaped plates 21. And because the distance between the pressing mechanism and the battery body 4 is less than the height of the boss 22, when the battery body 4 contacts the boss 22 at the top of the welding die 2 due to the descent of the top plate 8, the top plate 8 can continue to descend, thereby driving the two L-shaped plates 21 to continue to descend. At this time, the battery body 4 cannot continue to descend because it contacts the boss 22, while the pressing mechanism continues to descend, so that the pressing plate mechanism presses the outer shell of the battery body 4, and then presses and fixes the battery body 4 to firmly insert the electrode plates at the bottom of the battery body 4 into the bus bar 23 on the welding die 2 to ensure the welding quality.

[0047] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A pressing shell device for battery casting and welding, comprising a liftable top plate (8), a pressing mechanism for pressing the battery body (4) below, and a welding die (2), characterized in that: Two L-shaped plates (21) are fixedly connected to the top plate (8). The short sides of the two L-shaped plates (21) are located at the bottom of the top plate (8), and a battery support plate (3) is mounted on the tops of the two short sides. The battery body (4) is located on top of the battery support plate (3). The welding die (2) is located at the bottom of the battery support plate (3). A boss (22) is provided on the top of the welding die (2). The boss (22) is located between the two L-shaped plates (21). The pressing mechanism is located between the two L-shaped plates (21) and is fixedly connected to the top plate (8). The distance between the pressing mechanism and the battery body (4) is less than the height of the boss (22). The pressing mechanism includes two connecting rods (14) fixed to the top plate (8), and a pressing shell plate (9) connected to the connecting rods (14). The distance between the pressing shell plate (9) and the battery body (4) is less than the height of the boss (22).

2. The shell pressing device for battery casting welding according to claim 1, wherein: A height adjustment mechanism is further provided between the connecting rod (14) and the pressing shell plate (9). The height adjustment mechanism includes an adjustment plate (13) sleeved on the two connecting rods (14). Two screw rods (11) fixed by a first nut (12) are inserted through the adjustment plate (13). The bottoms of the two screw rods (11) are connected to a pressing shell plate (9). Springs (6) are sleeved on the two screw rods (11) between the pressing shell plate (9) and the adjustment plate (13).

3. The shell pressing device for battery casting and welding according to claim 2, characterized in that: External connection threads (15) are provided on the peripheries of the two connecting rods (14). Second nuts (5) are connected to the two connecting rods (14) at the top and bottom of the adjustment plate (13) through the connection threads (15).

4. A casing pressing device for battery casting and welding according to claim 1, characterized in that: A positioning pin (19) is fixedly connected to the bottom of the battery support plate (3). A positioning hole (20) is provided at the position of the welding die (2) corresponding to the positioning pin (19).

5. A casing pressing device for battery casting and welding according to claim 1 or 4, characterized in that: A battery card slot (18) is provided on the battery support plate (3). The electrode plates of the battery body (4) pass through the battery card slot (18) and are located at the bottom of the battery support plate (3).

6. The shell pressing device for battery casting and welding according to claim 5, characterized in that: A bus bar (23) is fixedly connected to the position of the welding die (2) corresponding to the electrode plates of the battery body (4).

7. A casing pressing device for battery casting welding according to claim 6, characterized in that: A first lifting guide rod (7) is fixedly connected to the top of the top plate (8).

8. A casing pressing device for battery casting welding according to claim 6, characterized in that: A second lifting guide rod (10) is fixedly connected to the welding die (2).

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