Medium and large-sized sealed battery on-line automatic negative pressure drawing mechanism

Abstract

The application relates to the technical field of battery manufacturing, and particularly discloses a medium-large density battery on-line automatic negative pressure extraction mechanism, which comprises a machine tool body, a conveying belt is arranged on the machine tool body, a plurality of battery bodies are transported on the conveying belt, a fixing support is arranged on the machine tool body, a positioning component and a vacuum extraction component are arranged on the fixing support, the positioning component comprises a positioning plate and is responsible for limiting the battery bodies; the vacuum extraction component comprises a vacuum pump, a vacuum pipe is connected to the vacuum pump, a valve pipe is arranged on the battery body, the vacuum pipe is responsible for being inserted into the valve pipe, and the heat in the battery body is extracted. The medium-large density battery on-line automatic negative pressure extraction mechanism provided by the application is used for the battery after acid is added, the battery is circulated in a cold bath tank, the battery is extracted in line in two steps, the heat generated in the battery is extracted to a vacuum system background for condensation treatment, and the 3-day production process requirement of the medium-large density battery is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing, in particular to an online automatic negative pressure extraction mechanism for medium and large density batteries. BACKGROUND

[0002] The medium and large density batteries adopt a continuous casting, rolling and punching process for the plate, and an internal formation process. If the battery after acid addition is transferred to a water bath tank, and if the online negative pressure extraction is not used, within the first 30 minutes after the battery is added with acid, a violent chemical reaction occurs inside the battery, generating a large amount of heat, causing the temperature inside the battery to rapidly rise above 100 degrees, resulting in overheating of the plate and the separator, which cannot meet the process requirements. SUMMARY

[0003] The purpose of the present application is to provide an online automatic negative pressure extraction mechanism for medium and large density batteries to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] An online automatic negative pressure extraction mechanism for medium and large density batteries, comprising a machine tool body, a conveying belt is arranged on the machine tool body, a plurality of battery bodies are transported on the conveying belt, a fixed support is arranged on the machine tool body, a positioning component and a vacuum extraction component are arranged on the fixed support, the positioning component comprises a positioning plate, responsible for limiting the battery body; the vacuum extraction component comprises a vacuum pump, a vacuum pipe is connected to the vacuum pump, a valve pipe is arranged on the battery body, the vacuum pipe is responsible for being inserted into the inside of the valve pipe, and the heat inside the battery body is extracted.

[0006] Further, the end of the vacuum pipe is provided with a sealing component, the sealing component comprises a top pipe, the inside of the valve pipe is provided with a sealing plug, responsible for sealing the inside of the battery, a first air hole is formed in the top pipe, a second air hole is formed in the outer end of the valve pipe, and when the top pipe moves to the inside of the valve pipe, the first air hole and the second air hole are communicated.

[0007] Further, a groove is formed in the side end of the top pipe, an annular baffle is slidably connected to the inner wall of the groove, the annular baffle is fixedly connected with a sealing cover, a communication pipe is arranged on the inner wall of the top pipe, an arc-shaped hole is formed in the communication pipe, and a gas cylinder is connected to the communication pipe, which is responsible for pushing the top pipe to move to the inside of the valve pipe.

[0008] Further, a limiting component is arranged on the sealing plug, the limiting component comprises a limiting plate fixedly connected to the sealing plug, a limiting block is arranged at the outer end of the limiting plate, and the limiting block is initially located in the second air hole, responsible for limiting the sealing plug.

[0009] Further, the outer end of the limiting plate is provided with a movable hole, the limiting block is slidingly connected to the inner portion of the movable hole, and the limiting block and the movable hole are fixedly connected with a reset member.

[0010] Further, the limiting block comprises a pair of plane portions and an arc-shaped portion, the plane portions are parallel to the moving direction of the sealing plug, and are responsible for preventing the sealing plug from moving.

[0011] Further, the middle portion of the sealing plug is provided with a driving component, the driving component comprises a driven rod fixedly connected to the sealing plug, the driven rod is fixedly connected with the limiting plate, the driven rod is provided with a driving hole, and a plurality of limiting portions are arranged on the driving hole.

[0012] Further, the end portion of the top pipe is further fixedly connected with a driving rod, the outer end of the driving rod is provided with an elastic member, and the elastic member is matched with the limiting portion.

[0013] Optionally, the inner wall of the valve pipe is fixedly connected with a threaded guide rail, the outer wall of the top pipe is fixedly connected with a pressure receiving block, when the pressure receiving block slides on the inner wall of the guide rail, the top pipe is driven to rotate, and when the elastic member enters the inner portion of the driving hole, the top pipe drives the limiting plate to rotate through the driving rod and the driven rod.

[0014] In the above technical solution, the online automatic negative pressure extraction mechanism for medium and large sealed batteries has the following beneficial effects:

[0015] The online automatic negative pressure extraction mechanism for medium and large sealed batteries: after the battery is added with acid, the battery is transferred to a cold bath tank, and the heat generated in the battery is extracted to the vacuum system background for condensation treatment in two steps of the battery entering, so as to meet the 3-day production process requirement of the medium and large sealed batteries.

[0016] Furthermore, by arranging the limiting plate and the limiting block, the sealing plug can be further fixed, the limiting plate can only rotate to be unlocked but cannot slide to be unlocked under the action of the limiting block, so that the sealing plug can further seal the first air hole, and the sealing plug will not be loosened when there is a pressure difference between the inside and outside of the battery body before and after vacuum extraction, so as to avoid poor sealing effect.

[0017] It should be understood that the foregoing general description and the following detailed description are only exemplary and illustrative, but not for limiting the present disclosure.

[0018] The present application file provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[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, conveying belt; 3, battery body; 4, fixed support; 5, positioning component; 51, positioning plate; 52, hydraulic cylinder; 53, fixed rod; 6, vacuum extraction component; 61, vacuum pipe; 611, first pipe body; 612, small electro-hydraulic cylinder; 613, second pipe body; 62, valve pipe; 7, sealing component; 71, top pipe; 72, sealing plug; 73, first air hole; 74, second air hole; 75, annular baffle; 76, sealing cover; 77, communication pipe; 78, arc hole; 79, air cylinder; 8, limiting component; 81, limiting plate; 82, limiting block; 821, flat part; 822, arc part; 84, reset piece; 9, driving component; 91, driven rod; 92, driving hole; 921, locking part; 93, driving rod; 94, telescopic piece; 941, arc block; 942, reset spring; 95, guide rail; 96, pressure receiving block; 10, blocking component; 101, hydraulic rod; 102, support rod; 103, blocking plate; 11, PLC. DETAILED DESCRIPTION

[0034] To make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the protection scope of the present disclosure.

[0035] Embodiment 1, please refer to Figures 1-10 An online automatic negative pressure extraction mechanism for medium-large sealed batteries, comprising a machine tool body 1, wherein the machine tool body 1 is provided with a conveying belt 2, a plurality of battery bodies 3 are transported on the conveying belt 2, the machine tool body 1 is provided with a fixed support 4, the fixed support 4 is provided with a positioning component 5 and a vacuum extraction component 6, the positioning component 5 comprises a positioning plate 51, and is responsible for limiting the battery body 3;

[0036] The vacuum extraction component 6 comprises a vacuum pump, the vacuum pump is connected with a vacuum pipe 61, the battery body 3 is provided with a valve pipe 62, and the vacuum pipe 61 is responsible for being inserted into the valve pipe 62, and the heat inside the battery body 3 is extracted.

[0037] The fixed support 4 is further provided with a blocking component 10, the blocking component 10 further comprises a support rod 102, the support rod 102 is detachably installed on the fixed support 4, a hydraulic rod 101 is fixedly connected on the support rod 102, the bottom end of the hydraulic rod 101 is movably penetrated to the bottom of the support rod 102, and a blocking plate 103 is fixedly connected, the blocking plate 103 comprises a plate body one, the bottom of the plate body one is rotatably connected with a plate body two and a plate body three, when the conveying belt 2 is opened, the battery after adding acid moves to a specific position, then the PLC 11 controls the hydraulic rod 101, the hydraulic rod 101 is started and the blocking plate 103 is lowered, until the blocking plate 103 is close to the conveying belt 2, in order to prevent the extrusion force on the conveying belt 2 being too large, the plate body two and the plate body three can be forked, and the hydraulic pressure is buffered.

[0038] The positioning component 5 comprises a fixed rod 53 which is detachably connected to the fixed support 4, a plurality of hydraulic cylinders 52 are fixedly connected to the bottom of the fixed rod 53, a positioning plate 51 is fixedly connected with the hydraulic cylinders 52, the hydraulic cylinders 52 are electrically connected with the PLC 11 (PLC 11 control instrument), after the battery moves to a specific position, the PLC 11 controls the plurality of hydraulic cylinders 52 to descend, so that the positioning plate 51 falls and contacts the battery, thereby achieving the purpose of positioning the battery.

[0039] The vacuum pipe 61 comprises a first pipe body 611, the first pipe body 611 is connected with a vacuum pump, a second pipe body 613 is slidably connected in the first pipe body 611, a base plate is fixedly connected on the first pipe body 611, 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 pipe body 613, the small electro-hydraulic cylinder 612 is fixedly connected with the push plate, when needed, the second pipe body 613 is lowered to the height of the valve pipe 62 of the battery body 3 through the PLC 11, then the vacuum pipe 61 is responsible for pumping away the gas in the battery body 3, thereby achieving the purpose of rapid and efficient heat dissipation.

[0040] In further provided embodiments of the application, the end of the vacuum pipe 61 is provided with a sealing component 7, the sealing component 7 comprises a top pipe 71, the inside of the valve pipe 62 is provided with a sealing plug 72, which is responsible for sealing the inside of the battery, a first air hole 73 is formed in the top pipe 71, a second air hole 74 is formed in the outer end of the valve pipe 62, when the top pipe 71 moves to the inside of the valve pipe 62, the first air hole 73 and the second air hole 74 are communicated.

[0041] The top pipe 71 pushes away the sealing plug 72, and makes the first air hole 73 and the second air hole 74 communicated, so that the purpose of pumping vacuum in the battery body 3 is achieved under the condition of ensuring sealing.

[0042] Further provided in the embodiments of the present application, the side end of the top pipe 71 is provided with a groove, the inner wall of the groove is slidably connected with an annular baffle 75, the annular baffle 75 is fixedly connected with a sealing cover 76, the inner wall of the top pipe 71 is provided with a communicating pipe 77, the communicating pipe 77 is provided with an arc-shaped hole 78, the arc-shaped hole 78 is arranged to communicate the communicating pipe 77 with the top pipe 71, the communicating pipe 77 is connected with a gas cylinder 79, which is responsible for pushing the top pipe 71 to move to the inside of the valve pipe 62, and the communicating pipe 77 is connected with the vacuum pipe 61.

[0043] Specifically, the side end of the sealing cover 76 is fixedly connected with a sealing gasket, the sealing gasket is annular and has a thickness of 1-5 cm, when the sealing cover 76 with the sealing gasket touches the end of the valve pipe 62, the battery body 3 is isolated from the outside by the sealing gasket, further ensuring the sealing effect during vacuumizing.

[0044] The gas cylinder 79 is electrically connected with the PLC 11, when the gas cylinder 79 is started, the communicating pipe 77 moves with the gas cylinder 79, the communicating pipe 77 pushes the top pipe 71, so that the top pipe 71 is separated from the sealing cover 76, then the annular baffle 75 is also away from the first air hole 73, so that the first air hole 73 is exposed, until the first air hole 73 is communicated with the second air hole 74, and the air pumping is started.

[0045] Further provided in the embodiments of the present application, the sealing plug 72 is provided with a limiting part 8, the limiting part 8 includes a limiting plate 81 fixedly connected with the sealing plug 72, the outer end of the limiting plate 81 is provided with a limiting block 82, the limiting block 82 is initially located in the second air hole 74, and is responsible for limiting the sealing plug 72.

[0046] Further, the outer end of the limiting plate 81 is provided with a movable hole, the limiting block 82 is slidably connected in the inside of the movable hole, a reset part 84 is fixedly connected between the limiting block 82 and the movable hole, and the reset part 84 is a reset spring 942; the limiting block 82 includes a pair of plane parts 821 and an arc-shaped part 822, the plane parts 821 are in parallel with the moving direction of the sealing plug 72, and are responsible for preventing the sealing plug 72 from moving.

[0047] Further, the middle part of the sealing plug 72 is provided with a driving part 9, the driving part 9 includes a driven rod 91 fixedly connected in the sealing plug 72, the driven rod 91 is fixedly connected with the limiting plate 81, the driven rod 91 is provided with a driving hole 92, and the driving hole 92 is provided with a plurality of locking parts 921; the end of the top pipe 71 is further fixedly connected with a driving rod 93, the outer end of the driving rod 93 is provided with an extension part 94, and the extension part 94 is matched with the locking parts 921.

[0048] The telescopic part 94 comprises an arc-shaped block 941 and a return spring 942, the arc-shaped block 941 has a pair of arc-shaped surfaces in symmetrical relation, and the arc-shaped surfaces are directed towards the driven rod 91, so that after the driving rod 93 is pressed, the arc-shaped block 941 can press the pressure spring, thereby entering the inside of the driving hole 92, and the engagement of the driving rod 93 and the driven rod 91 is completed, and then the driving rod 93 can rotate with the driven rod 91.

[0049] In the embodiment, the return spring 942 has a small elastic force, and the elastic force is between 0.2-2 Newton, and the elastic force of the pressure spring is slightly larger, and the elastic force is between 1-5 Newton, and the elastic force is larger than the friction force between the sealing plug 72 and the valve pipe 62.

[0050] In the application, the communication pipe 77 is fixedly connected with the top pipe 71.

[0051] In the application, the outer end of the top pipe 71 is drivingly connected with a speed reducer motor, the output end of the speed reducer motor is fixedly connected with a belt pulley, the outer end of the communication pipe 77 is also fixedly sleeved with a belt pulley, and the outer wall of the belt pulley is drivingly connected with a transmission belt, when the telescopic part 94 enters the driving hole 92, the communication pipe 77 is rotated, the communication pipe 77 is rotated with the top pipe 71, the top pipe 71 is rotated with the driven rod 91, and the limiting plate 81 starts to rotate, because the arc surface of the arc-shaped part 822 is perpendicular to the rotating surface, therefore, the limiting block 82 can easily leave the second air hole 74, at this time, the limiting plate 81 can move, at this time, the air cylinder 79 is pushed, and the sealing plug 72 is moved away.

[0052] Because the elastic force of the pressure spring is larger than the friction force between the sealing plug 72 and the valve pipe 62, when the top pipe 71 is subsequently pulled, the arc-shaped block 941 is still initially in the driving hole 92, and the sealing plug 72 is pulled to move, and is rotated by a set angle, until the limiting block 82 is returned to the second air hole 74 again, when the sealing plug 72 is subsequently pulled, because the limiting block 82 is limited, the pulling force is gradually increased until the elastic force of the pressure spring, and finally the driving rod 93 and the driven rod 91 are separated, the top pipe 71 and the valve pipe 62 are separated, and the whole work of vacuumizing is completed.

[0053] In the application, the moving distance of the air cylinder 79 can be measured and calculated in advance, for example, after 5 centimeters of movement is set, the movement is stopped, the speed reducer motor is driven again, the speed reducer motor is slowly rotated by a set angle (for example, 15 degrees), the limiting block 82 is helped to leave the second air hole 74, and then the air cylinder 79 is started again, and the sealing plug 72 is pushed away.

[0054] Subsequently, the positioning plate 51 and the blocking plate 103 can be lifted.

[0055] By setting the limiting block 82, the sealing plug 72 can be prevented from moving, and the poor sealing effect caused by the movement of the sealing plug 72 when there is a pressure difference between the battery body 3 and the outside can be effectively avoided. Especially after the battery body 3 is vacuumized, the internal and external pressure difference is too large, and the sealing plug 72 needs to be limited in the moving direction. The sealing plug 72 needs to be unlocked and must be rotated, but it is difficult to do so by relying on the pressure difference or external force. Only when the driving rod 93 and the driven rod 91 are engaged, the rotation unlocking of the limiting plate 81 can be completed.

[0056] Embodiment 2, the difference between embodiment 2 and embodiment 1 is that a speed reducer is not used, and the following technical features are added: please refer to Figures 11-12 The inner wall of the valve pipe 62 is fixedly connected with a threaded guide rail 95, the outer wall of the top pipe 71 is fixedly connected with a pressure receiving block 96, the pressure receiving block 96 slides in the inner wall of the guide rail 95 to drive the top pipe 71 to rotate, and when the telescopic piece 94 enters the inside of the driving hole 92, the top pipe 71 drives the limiting plate 81 to rotate through the driving rod 93 and the driven rod 91.

[0057] The guide rail 95 has two openings at both ends of the guide rail 95, which facilitates the entry of the pressure receiving block 96. When the pressure receiving block 96 presses the guide rail 95, the rotation angle has a small deviation, which can be compensated by adjusting the arc length of the first air hole 73. The included angle of the arc surface of the first air hole 73 is slightly larger, so that the limiting block 82 can still enter the inside of the first air hole 73.

[0058] In this embodiment, the communication pipe 77 is rotationally connected with the top pipe 71, the bottom end of the communication pipe 77 is fixedly connected with a wedge-shaped block, and the inner wall of the top pipe 71 is provided with an annular groove. The wedge-shaped block rotates in the annular groove, so that the communication pipe 77 can be pushed or pulled by the top pipe 71.

[0059] In this embodiment, a moving plate is slidably connected in the driving hole 92, and a telescopic spring is fixedly connected between the moving plate and the driving hole 92. When the arc-shaped block 941 enters the inside of the driving hole 92, the telescopic spring will be pressed.

[0060] When the communication pipe 77 is driven to move, the top pipe 71 moves along until the driving rod 93 and the driven rod 91 are engaged. At this time, the pressure receiving block 96 touches the guide rail 95, and because the inner wall of the guide rail 95 extends in a threaded manner, the top pipe 71 starts to rotate, thereby rotating the limiting plate 81. At this time, the arc-shaped part 822 of the limiting block 82 faces the rotating direction, and the reset spring 942 can be easily pressed to complete the unlocking of the limiting plate 81.

[0061] In the embodiment, only the cylinder 79 needs to be controlled to complete the unlocking of the limiting plate 81 and the movement of the sealing plug 72, so that the battery body 3 can not only be vacuumized in a sufficiently sealed environment, but also ensure that the sealing plug 72 will not be loosened due to the influence of internal and external air pressure after the vacuumization is completed, thereby affecting the sealing effect.

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

[0063] The above only describes some exemplary embodiments of the application in a descriptive manner, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the application.

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 provided with a valve tube, which is inserted into the valve tube to extract heat from inside the battery body. 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 top tube pushes open the sealing plug and makes the first vent hole and the second vent hole connected. The sealing plug is provided with a limiting component, which includes a limiting plate fixedly connected to the sealing plug. The rotation of the top tube drives the limiting plate to rotate. A limiting block is 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. 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.

2. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 1, 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.

3. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 1, 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.

4. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 1, 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.

5. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 4, 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.

6. The online automatic negative pressure extraction mechanism for medium and large-density batteries according to claim 5, 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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