On-line automatic negative pressure pumping mechanism for medium and large dense batteries

Abstract

The invention relates to the technical field of battery manufacturing, and particularly discloses an on-line automatic negative pressure pumping mechanism for medium and large dense batteries, which comprises a machine tool body, a conveyor belt is arranged on the machine tool body, a plurality of battery bodies are transported on the conveyor belt, a fixed support is arranged on the machine tool body, and a positioning component and a vacuumizing component are arranged on the fixed support. The positioning part comprises a positioning plate and is used for limiting the battery body; the vacuumizing part comprises a vacuum pump, a vacuum pipe is connected to the vacuum pump, a valve pipe is arranged on the battery body, and the vacuum pipe is inserted into the valve pipe to pump out heat in the battery body. According to the on-line automatic negative pressure pumping mechanism for the medium-and-large-density batteries, provided by the invention, the acid-added batteries flow into the cold bath tank, and in two steps of entering of the batteries, on-line negative pressure pumping is carried out, so that heat generated in the batteries is pumped to a background of a vacuum system for condensation treatment; and the three-day production process requirements of medium and large dense batteries are met.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and specifically to an online automatic negative pressure extraction mechanism for medium and large density batteries. Background Technology

[0002] Zhongda Mi Battery uses continuous casting, rolling and stamping process for the plates and internal formation process. If the battery is transferred to the water bath after acid addition and no online negative pressure is used, a violent chemical reaction will occur inside the battery in the first 30 minutes after acid addition, generating a large amount of heat. This will cause the battery temperature to rise rapidly to over 100 degrees Celsius, resulting in overheating of the plates and separators, which will not meet the process requirements. Summary of the Invention

[0003] The purpose of this invention is to provide an online automatic negative pressure extraction mechanism for medium and large-density batteries to overcome the above-mentioned shortcomings in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An online automatic negative pressure extraction mechanism for medium and large density batteries includes a machine tool body, a conveyor belt on which multiple battery bodies are transported, a fixed support on the machine tool body, a positioning component and a vacuum extraction component on the fixed support, the positioning component including a positioning plate for limiting the position of the battery bodies; the vacuum extraction component including a vacuum pump connected to a vacuum tube, a valve tube on the battery body, the vacuum tube being inserted into the valve tube to extract heat from the inside of the battery body.

[0006] Furthermore, a sealing component is provided at the end of the vacuum tube. The sealing component includes a top tube. A sealing plug is provided inside the valve tube to seal the inside of the battery. A first vent is provided inside the top tube, and a second vent is provided at the outer end of the valve tube. When the top tube moves into the valve tube, the first vent communicates with the second vent.

[0007] Furthermore, a groove is provided on the side end of the jacking pipe, and an annular baffle is slidably connected to the inner wall of the groove. A sealing cover is fixedly connected to the annular baffle. A connecting pipe is provided on the inner wall of the jacking pipe, and an arc-shaped hole is provided on the connecting pipe. A cylinder is connected to the connecting pipe, which is responsible for pushing the jacking pipe to move into the interior of the valve pipe.

[0008] Furthermore, the sealing plug is provided with a limiting component, which includes a limiting plate fixedly connected to the sealing plug, and a limiting block provided at the outer end of the limiting plate. The limiting block is initially located at the second vent hole and is responsible for limiting the sealing plug.

[0009] Furthermore, the outer end of the limiting plate is provided with a movable hole, the limiting block is slidably connected to the inside of the movable hole, and a reset component is fixedly connected between the limiting block and the movable hole.

[0010] Furthermore, the limiting block includes a pair of flat portions and arc-shaped portions, wherein the flat portions are parallel to the direction of movement of the sealing plug and are responsible for preventing the sealing plug from moving.

[0011] Furthermore, a driving component is provided in the middle of the sealing plug. The driving component includes a driven rod fixedly connected to the sealing plug. The driven rod is fixedly connected to the limiting plate. A driving hole is provided on the driven rod, and a plurality of limiting parts are provided on the driving hole.

[0012] Furthermore, a drive rod is fixedly connected to the end of the jacking pipe, and a telescopic component is provided at the outer end of the drive rod, which is adapted to the limiting part.

[0013] Optionally, the inner wall of the valve pipe is fixedly connected to a threaded guide rail, and the outer wall of the jacking pipe is fixedly connected to a pressure block. When the pressure block slides on the inner wall of the guide rail, it drives the jacking pipe to rotate. When the telescopic member enters the drive hole, the jacking pipe drives the limiting plate to rotate through the drive rod and the driven rod.

[0014] The beneficial effects of the online automatic negative pressure extraction mechanism for medium and large-density batteries provided by the present invention are as follows:

[0015] Zhongdami Battery Online Automatic Negative Pressure Extraction Mechanism: After the battery is acid-added, it is transferred to the cold bath tank. During the two steps of the battery entering the tank, negative pressure is extracted online to draw the heat generated inside the battery to the vacuum system background for condensation treatment, which meets the 3-day production process requirements of Zhongdami Battery.

[0016] Furthermore, by setting a limiting plate and a limiting block, the sealing plug can be further fixed. Under the action of the limiting block, the limiting plate can only be rotated to unlock, not slid to unlock. This allows the sealing plug to further seal the first vent hole, and also ensures that the sealing plug will not loosen when there is a pressure difference between the inside and outside of the battery body before and after vacuuming, thus avoiding poor sealing effect.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0018] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall top view structure provided for an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the overall structure from another perspective, provided for an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of a vacuum tube structure provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the vacuum pumping component structure provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the external structure of the sealing component provided in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the cracked structure of the sealing component provided in an embodiment of the present invention;

[0027] Figure 8 This is a cross-sectional view of the cracked structure of the sealing component provided in an embodiment of the present invention;

[0028] Figure 9 Provided for embodiments of the present invention Figure 8 A magnified structural diagram at point A;

[0029] Figure 10 Provided for embodiments of the present invention Figure 8 A magnified structural diagram at point B;

[0030] Figure 11 This is a schematic diagram of the guide rail and pressure block structure provided in an embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the movement of the pressure block provided in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Machine tool body; 2. Conveyor belt; 3. Battery body; 4. Fixed bracket; 5. Positioning component; 51. Positioning plate; 52. Hydraulic cylinder; 53. Fixed rod; 6. Vacuuming component; 61. Vacuum tube; 611. First tube body; 612. Small electro-hydraulic cylinder; 613. Second tube body; 62. Valve tube; 7. Sealing component; 71. Top tube; 72. Sealing plug; 73. First vent; 74. Second vent; 75. Annular baffle; 76. Sealing cover; 77. Connecting pipe; 78. Arc-shaped 79. Hole; 8. Cylinder; 9. Limiting component; 10. Limiting plate; 11. Limiting block; 12. Flat part; 13. Arc-shaped part; 14. Movable hole; 15. Reset component; 16. Driving component; 17. Driven rod; 18. Drive hole; 19. Locking part; 10. Drive rod; 11. Telescopic component; 12. Arc-shaped block; 13. Reset spring; 14. Guide rail; 15. Pressure block; 16. Blocking component; 17. Hydraulic rod; 18. Support rod; 19. Blocking plate; 10. PLC. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0035] Example 1, please refer to Figure 1-10 A medium-to-large density battery online automatic negative pressure extraction mechanism includes a machine tool body 1, a conveyor belt 2 on the machine tool body 1, a plurality of battery bodies 3 transported on the conveyor belt 2, a fixed bracket 4 on the machine tool body 1, a positioning component 5 and a vacuum extraction component 6 on the fixed bracket 4, the positioning component 5 including a positioning plate 51, which is responsible for limiting the battery body 3.

[0036] The vacuum pumping component 6 includes a vacuum pump, which is connected to a vacuum tube 61. The battery body 3 is provided with a valve tube 62. The vacuum tube 61 is inserted into the valve tube 62 to extract heat from the inside of the battery body 3.

[0037] The fixed bracket 4 is also equipped with a blocking component 10, which also includes a support rod 102. The support rod 102 is detachably installed on the fixed bracket 4. A hydraulic rod 101 is fixedly connected to the support rod 102. The bottom end of the hydraulic rod 101 extends through to the bottom of the support rod 102 and is fixedly connected to a blocking plate 103. The blocking plate 103 includes a plate body one, and the bottom of the plate body one is rotatably connected to a plate body two and a plate body three. When the conveyor belt 2 is turned on, the battery after adding acid moves to a specific position. Then, the PLC 11 controls the hydraulic rod 101. After the hydraulic rod 101 is started, it lowers the blocking plate 103 until the blocking plate 103 approaches the conveyor belt 2. In order to prevent excessive pressure on the conveyor belt 2, the plate body two and the plate body three can be separated to buffer the hydraulic pressure.

[0038] The positioning component 5 includes a fixed rod 53 detachably connected to the fixed bracket 4. Multiple hydraulic cylinders 52 are fixedly connected to the bottom of the fixed rod 53. The positioning plate 51 is fixedly connected to the hydraulic cylinders 52. The hydraulic cylinders 52 are electrically connected to the PLC11 (PLC11 controller). After the battery moves to a specific position, the PLC11 controls the multiple hydraulic cylinders 52 to descend, causing the positioning plate 51 to fall and contact the battery, thereby achieving the purpose of positioning the battery.

[0039] The vacuum tube 61 includes a first tube body 611, which is connected to a vacuum pump. A second tube body 613 is slidably connected inside the first tube body 611. A base plate is fixedly connected to the first tube body 611, and a small electro-hydraulic cylinder 612 is fixedly connected to the side end of the base plate. A push plate is fixedly connected to the outer wall of the second tube body 613, and the small electro-hydraulic cylinder 612 is fixedly connected to the push plate. When needed, the second tube body 613 is lowered to the height of the battery valve tube 62 by the PLC 11. Then, the vacuum tube 61 is responsible for removing the gas inside the battery body 3 to achieve the purpose of rapid and efficient heat dissipation.

[0040] In a further embodiment of the present invention, a sealing component 7 is provided at the end of the vacuum tube 61. The sealing component 7 includes a top tube 71. A sealing plug 72 is provided inside the valve tube 62 to seal the inside of the battery. A first vent hole 73 is provided inside the top tube 71. A second vent hole 74 is provided at the outer end of the valve tube 62. When the top tube 71 moves into the valve tube 62, the first vent hole 73 communicates with the second vent hole 74.

[0041] The top tube 71 pushes open the sealing plug 72 and connects the first vent 73 with the second vent 74, so that the purpose of evacuating the battery body 3 can be achieved while ensuring a seal.

[0042] In a further embodiment of the present invention, a groove is provided on the side end of the top tube 71, and an annular baffle 75 is slidably connected to the inner wall of the groove. A sealing cover 76 is fixedly connected to the annular baffle 75. A connecting pipe 77 is provided on the inner wall of the top tube 71. An arc-shaped hole 78 is provided on the connecting pipe 77. By providing the arc-shaped hole 78, the connecting pipe 77 and the top tube 71 are connected. A cylinder 79 is connected to the connecting pipe 77, which is responsible for pushing the top tube 71 to move into the interior of the valve pipe 62. The connecting pipe 77 is connected to and communicates with the vacuum pipe 61.

[0043] Specifically, a sealing gasket is fixedly connected to the side end of the sealing cover 76. The sealing gasket is annular and 1-5 cm thick. When the sealing cover 76 with the sealing gasket touches the end of the valve tube 62, the battery body 3 is isolated from the outside by the sealing gasket, further ensuring the sealing effect during vacuuming.

[0044] The cylinder 79 is electrically connected to the PLC 11. When the cylinder 79 is started, it moves the connecting pipe 77. The connecting pipe 77 pushes open the top pipe 71, separating the top pipe 71 from the sealing cover 76. Then the annular baffle 75 also moves away from the first vent 73, exposing the first vent 73 until the first vent 73 connects with the second vent 74, and the air extraction begins.

[0045] In a further embodiment of the present invention, a limiting component 8 is provided on the sealing plug 72. The limiting component 8 includes a limiting plate 81 fixedly connected to the sealing plug 72. A limiting block 82 is provided at the outer end of the limiting plate 81. The limiting block 82 is initially located at the second vent hole 74 and is responsible for limiting the sealing plug 72.

[0046] Furthermore, the outer end of the limiting plate 81 is provided with a movable hole 83, and the limiting block 82 is slidably connected to the inside of the movable hole 83. A reset member 84 is fixedly connected between the limiting block 82 and the movable hole 83, and the reset member 84 is a reset spring 942. The limiting block 82 includes a pair of flat parts 821 and arc-shaped parts 822. The flat parts 821 are parallel to the direction of movement of the sealing plug 72 and are responsible for preventing the sealing plug 72 from moving.

[0047] Furthermore, a driving component 9 is provided in the middle of the sealing plug 72. The driving component 9 includes a driven rod 91 fixedly connected to the sealing plug 72. The driven rod 91 is fixedly connected to the limiting plate 81. A driving hole 92 is provided on the driven rod 91. A plurality of locking parts 921 are provided on the driving hole 92. A driving rod 93 is also fixedly connected to the end of the top tube 71. A telescopic member 94 is provided at the outer end of the driving rod 93. The telescopic member 94 is adapted to the locking parts 921.

[0048] The telescopic component 94 includes an arc-shaped block 941 and a return spring 942. The arc-shaped block 941 has a pair of arc-shaped surfaces that are symmetrical. The arc-shaped surfaces face the driven rod 91, so that after the drive rod 93 is pressed, the arc-shaped block 941 can press the pressure spring and enter the drive hole 92 to complete the engagement between the drive rod 93 and the driven rod 91. Then the drive rod 93 can rotate with the driven rod 91.

[0049] In this embodiment, the return spring 942 has a relatively small elastic force, between 0.2 and 2 Newtons, while the pressure spring has a slightly larger elastic force, between 1 and 5 Newtons. The elastic force is greater than the frictional force between the sealing plug 72 and the valve tube 62.

[0050] In this invention, the connecting pipe 77 is fixedly connected to the top pipe 71.

[0051] In this invention, the outer end of the jacking pipe 71 is connected to a reduction motor, and the output end of the reduction motor is fixedly connected to a pulley. The outer end of the connecting pipe 77 is also fixedly sleeved with a pulley, and the outer wall of the pulley is connected to a transmission belt. When the telescopic member 94 enters the drive hole 92, the connecting pipe 77 is rotated, and the connecting pipe 77 rotates the jacking pipe 71. The jacking pipe 71 rotates the driven rod 91, causing the limiting plate 81 to start rotating. Since the arc surface of the arc-shaped part 822 is perpendicular to the rotating surface, the limiting block 82 can easily leave the second vent hole 74. At this time, the limiting plate 81 can be moved. At this time, the cylinder 79 is pushed to remove the sealing plug 72.

[0052] Since the spring force of the pressure spring is greater than the frictional force between the sealing plug 72 and the valve tube 62, when the top tube 71 is pulled later, the arc block 941 initially remains in the drive hole 92 and pulls the sealing plug 72 to move. Then it rotates to a set angle until the limit block 82 returns to the second vent hole 74. When the sealing plug 72 is pulled later, the pulling force gradually increases until it exceeds the spring force of the pressure spring due to the limit block 82. Finally, the drive rod 93 and the driven rod 91 are separated, and the top tube 71 is separated from the valve tube 62, completing the entire vacuuming process.

[0053] In this case, the distance that the cylinder 79 moves can be measured and calculated in advance. For example, after moving 5 centimeters, the movement can be stopped, and then the reduction motor can be driven to slowly rotate at a set angle (e.g., 15 degrees) to help the limit block 82 leave the second vent 74. Then the cylinder 79 can be started to push open the sealing plug 72.

[0054] All that is needed afterward is to lift the positioning plate 51 and the blocking plate 103.

[0055] By setting the limiting block 82, the sealing plug 72 can be prevented from moving, which can effectively prevent the sealing plug 72 from moving when there is a pressure difference between the battery body 3 and the outside world, resulting in poor sealing effect. Especially after the battery body 3 is evacuated, the pressure difference between the inside and outside is too large, and it is necessary to limit the movement direction of the sealing plug 72. The sealing plug 72 needs to be unlocked, which requires rotation. However, it cannot be done by pressure difference or external force. Only when the drive rod 93 and the driven rod 91 are engaged can the rotation and unlocking of the limiting plate 81 be completed.

[0056] Example 2 differs from Example 1 in that it does not use a geared motor and adds the following technical features: Please refer to Figure 11-12 The inner wall of the valve pipe 62 is fixedly connected to a threaded guide rail 95, and the outer wall of the top pipe 71 is fixedly connected to a pressure block 96. When the pressure block 96 slides on the inner wall of the guide rail 95, it drives the top pipe 71 to rotate. When the telescopic member 94 enters the drive hole 92, the top pipe 71 drives the limiting plate 81 to rotate through the drive rod 93 and the driven rod 91.

[0057] The guide rail 95 has two openings, located at the two ends of the guide rail 95 respectively, to facilitate the entry of the pressure block 96. When the pressure block 96 presses the guide rail 95, there is a slight deviation in the rotation angle, which can be compensated by setting the arc length of the first vent hole 73. The included angle of the arc surface of the first vent hole 73 is adjusted to be slightly larger so that the limiting block 82 can still enter the interior of the first vent hole 73.

[0058] In this embodiment, the connecting pipe 77 and the top pipe 71 are rotatably connected. A wedge block is fixedly connected to the bottom end of the connecting pipe 77. An annular groove is opened on the inner wall of the top pipe 71. The wedge block rotates in the annular groove, so that the connecting pipe 77 can be pushed or pulled by the top pipe 71.

[0059] In this embodiment, a movable plate is slidably connected inside the drive hole 92, and a telescopic spring is fixedly connected between the movable plate and the drive hole 92. When the arc-shaped block 941 enters the drive hole 92, it will press the telescopic spring.

[0060] When the drive connecting pipe 77 moves, the top pipe 71 moves along with it until the drive rod 93 engages with the driven rod 91. At this time, the pressure block 96 touches the guide rail 95. Since the inner wall of the guide rail 95 is threaded, the top pipe 71 is forced to start rotating, thereby rotating the limiting plate 81. At this time, the arc-shaped part 822 of the limiting block 82 faces the direction of rotation, and the reset spring 942 can be easily pressed to unlock the limiting plate 81.

[0061] In this embodiment, only the cylinder 79 needs to be controlled to unlock the limit plate 81 and move the sealing plug 72, so that the battery body 3 can not only perform vacuuming in a sufficiently sealed environment, but also ensure that after vacuuming, the sealing plug 72 will not be loosened due to the influence of internal and external air pressure, thus affecting the sealing effect.

[0062] When the jacking pipe 71 is pulled back, the pressure block 96 moves on the guide rail 95 and continues to rotate in the opposite direction, so that the limiting block 82 can smoothly return to the inside of the second vent 74. In this embodiment, in order to avoid deviation of the rotation angle, the inner diameter of the second vent 74 can be set to be larger, which is 1.5-3 times the outer diameter of the limiting block 82.

[0063] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An online automatic negative pressure extraction mechanism for medium and large density batteries, comprising a machine tool body, wherein a conveyor belt is provided on the machine tool body, and multiple battery bodies are transported on the conveyor belt, characterized in that: The machine tool body is provided with a fixed bracket, and the fixed bracket is provided with a positioning component and a vacuuming component. The positioning component includes a positioning plate, which is responsible for limiting the position of the battery body. The vacuuming component includes a vacuum pump, which is connected to a vacuum tube. The battery body is equipped with a valve tube, which is inserted into the valve tube to extract heat from inside the battery body.

2. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 1, characterized in that, The vacuum tube is provided with a sealing component at its end. The sealing component includes a top tube. The valve tube is provided with a sealing plug inside, which is responsible for sealing the inside of the battery. The top tube is provided with a first vent hole, and the valve tube is provided with a second vent hole at its outer end. When the top tube moves into the valve tube, the first vent hole and the second vent hole are connected.

3. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 2, characterized in that, The top pipe has a groove on its side end, and an annular baffle is slidably connected to the inner wall of the groove. A sealing cover is fixedly connected to the annular baffle. A connecting pipe is provided on the inner wall of the top pipe, and an arc-shaped hole is opened on the connecting pipe. A cylinder is connected to the connecting pipe, which is responsible for pushing the top pipe to move into the valve pipe.

4. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 3, characterized in that, The sealing plug is provided with a limiting component, which includes a limiting plate fixedly connected to the sealing plug. The outer end of the limiting plate is provided with a limiting block. The limiting block is initially located at the second vent hole and is responsible for limiting the sealing plug.

5. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 4, characterized in that, The outer end of the limiting plate is provided with a movable hole, the limiting block is slidably connected to the inside of the movable hole, and a reset component is fixedly connected between the limiting block and the movable hole.

6. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 5, characterized in that, The limiting block includes a pair of flat portions and arc-shaped portions. The flat portions are parallel to the direction of movement of the sealing plug and are responsible for preventing the sealing plug from moving.

7. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 6, characterized in that, A driving component is provided in the middle of the sealing plug. The driving component includes a driven rod fixedly connected to the sealing plug. The driven rod is fixedly connected to the limiting plate. A driving hole is provided on the driven rod, and multiple locking parts are provided on the driving hole.

8. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 7, characterized in that, The end of the jacking pipe is also fixedly connected to a drive rod, and the outer end of the drive rod is provided with a telescopic component, which is adapted to the locking part.

9. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 8, characterized in that, The inner wall of the valve pipe is fixedly connected to a threaded guide rail, and the outer wall of the jacking pipe is fixedly connected to a pressure block. When the pressure block slides on the inner wall of the guide rail, it drives the jacking pipe to rotate. When the telescopic component enters the drive hole, the jacking pipe drives the limiting plate to rotate through the drive rod and the driven rod.

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