Lithium battery capable of being quickly assembled

Abstract

The invention discloses a lithium battery capable of being quickly assembled, and relates to the technical field of lithium batteries, the lithium battery comprises a lower substrate, and the inner side of the lower substrate is provided with lower plastic; the bottom surface of the lower plastic cement is arranged to be of a cross-shaped turbulent flow structure, the top of the lower substrate is provided with an anti-explosion valve hole I, the inner side of the lower substrate is fixedly connected with an anti-explosion valve plate, the inner side of the lower substrate is fixedly connected with a pole base, the top of the pole base is fixedly connected with a sealing ring, and the top of the lower substrate is fixedly connected with an anti-explosion valve plate; according to the lithium battery capable of being quickly assembled, a turbulent flow structure is designed at the plastic liquid injection hole in the lower part of the cover plate, so that the impact of liquid on a pole piece during liquid injection is reduced, the pole piece is protected, and the situation that the use of the lithium battery is influenced by the damage of the pole piece due to overlarge pressure during liquid injection of the liquid injection hole due to the small hole diameter of the liquid injection hole is prevented; and a Y-shaped nick is formed in the middle of the valve plate, so that the valve plate can be opened in time when the battery is abused, and heat in the battery can be released in time.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery that can be assembled quickly. Background Art

[0002] Square lithium batteries are a common type of lithium batteries. The outer shell is generally a rectangular or cube. This regular shape allows the batteries to be closely arranged when assembled into a battery pack, with high space utilization, which is conducive to improving the overall energy density of the battery pack. Therefore, they are widely used in equipment and scenarios with high space requirements, such as electric vehicles and energy storage systems. With the rapid development of new energy vehicles and energy storage industries, the demand for batteries is becoming more and more vigorous, and the market competition is also becoming more and more fierce, requiring higher energy density, longer life, safer and lower cost batteries. At present, square lithium batteries on the market are mainly connected to the core and the top cover through a connecting piece, and the core is wrapped with insulating tape and Mylar to achieve insulation; Existing square lithium batteries usually need to be injected through the injection port when in use. Since the aperture of the injection port is small, excessive pressure when injecting liquid into the injection port will damage the electrode and affect the use of the lithium battery. Therefore, we propose a lithium battery that can be assembled quickly. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a lithium battery that can be quickly assembled, comprising: The winding core has a pole ear on the top, and the pole ear of the battery cell is bent and welded to the cover plate at an angle of 60°, and the pole ear is welded and fixed to the pole column. This can save the height of the pole ear and save material costs; Insulating tape, wrap insulating tape around the battery cell (instead of Mylar), and leave a certain distance of tape above and below, fold it and fix it to the protective cover and bottom support. This solution can simplify the process, replace the existing battery cell Mylar, save the hot melt process, and reduce costs; a protective plate is set on the top of the insulating tape, and the protective plate is used to replace the glue insulation process. The cover plate can prevent the pole ear from being inserted upside down, play a role in insulation protection, and can make the pole ear flatter, reduce the space occupied by the pole ear, and improve the energy density of the battery cell; An assembly device, the assembly device is used to quickly assemble and seal the lug position of the winding core; A protective device, which is used to wrap and cover the winding core, and the inner wall of the protective device is provided with a bottom supporting sheet; The top of the winding core is fixedly connected to the bottom of the pole ear, the top of the pole ear is fixedly connected to one side of the assembly device, the inner side of the insulating tape is fixedly connected to the outer side of the winding core, the top of the insulating tape is fixedly connected to the bottom of the protective plate, the inner side of the insulating tape is fixedly connected to the outer side of the bottom support sheet, the top of the bottom support sheet is fixedly connected to the bottom of the winding core, the outer side of the insulating tape is fixedly connected to the inner side of the protective device, the bottom of the inner wall of the protective device is fixedly connected to the bottom of the bottom support sheet, and the inner wall of the protective device is fixedly connected to the outer side of the assembly device; Wherein, the assembling device comprises: A lower substrate, wherein a lower plastic is disposed on the inner side of the lower substrate; The bottom surface of the lower plastic is set as a cross-shaped spoiler structure, and a spoiler structure is designed at the plastic injection hole under the cover plate to reduce the impact of liquid on the pole piece during injection, protect the pole piece, and prevent the pressure from being too large when the injection port is injected due to the small aperture of the injection port, which may damage the pole piece and affect the use of the lithium battery; The inner side of the lower substrate is fixedly connected to the top of the lower plastic; The bottom of the bottom support sheet is provided with an infiltration hole, the top of the protective plate is provided with an air release hole, and the top of the protective plate is provided with a rounded square hole; The top of the lower substrate is provided with an explosion-proof valve hole 1, the inner side of the lower substrate is fixedly connected with an explosion-proof valve plate, the inner side of the lower substrate is fixedly connected with a pole base, and the pole ear is welded on the pole base, eliminating the connection plate used in the existing battery cell, saving costs. The length of the pole base can be adjusted according to the center distance of the pole ear; the top of the pole base is fixedly connected with a sealing ring, and the top of the lower substrate is fixedly connected with an explosion-proof valve plate. In addition to the notches around the explosion-proof valve plate, a "Y"-shaped notch is used in the middle of the valve plate. When the battery is abused, the valve plate can be opened in time, and the heat in the battery can be released in time. The opening value of the explosion-proof valve can be adjusted by adjusting the notch depth; the top of the lower substrate is fixedly connected with an upper substrate, and the bottom of the upper substrate is provided with an explosion-proof valve hole 2 connected to the explosion-proof valve hole 1, and the top of the upper substrate is fixedly connected with an explosion-proof valve protection patch, which is used to protect the explosion-proof valve plate from being damaged by the external environment. The patch is coated with glue all around and attached to the cover plate, but in order to balance the air pressure inside the explosion-proof valve and the outside air pressure, a hole is often opened in the middle, and there is a risk of electrolyte inflow when injecting electrolyte. This solution cuts off a part of the glued part of the patch so that the patch is not completely sealed by glue, thereby realizing the function of the patch; a circular concave hole is opened on the top of the upper substrate, and the protrusions and grooves at the pole of the cover plate can increase the torsion resistance of the pole. The inner wall of the sealing ring is fixedly connected with a circular pole, and the outer side of the circular pole is sleeved and fixedly connected with the upper plastic. The top of the upper substrate is opened with an injection hole, which is divided into an upper part and a lower part; the upper opening is large, and cooperates with the injection nozzle for injection, with a certain inclination angle to guide the residual electrolyte. After the liquid is injected, this part cooperates with the sealing aluminum nail for welding and sealing. The lower part is a through hole, which is sealed with a sealing nail after the liquid is injected. Since the sealing nail is an interference fit, there is a 0.2-0.5mm chamfer on the upper part of the through hole, which plays a guiding role to prevent the nail from being scraped out of burrs; the inner wall of the injection hole is slidably connected with a sealing nail, and the top of the sealing nail is provided with a sealing aluminum nail, which has a clearance fit with the injection hole, and the peripheral clearance is between 0.1-0.3mm, and the clearance between the bottom and the injection hole is 0.05-0.1mm. If the sealing nail and the injection hole have an interference fit, the sealing nail is easy to lift up during welding, resulting in explosion points and cracks; if the gap is too large, it affects the welding penetration depth and width. The bottom of the sealing aluminum nail is slotted, which can not only provide a buffer space for the heated air and the vaporized residual electrolyte during welding, but also prevent the sealing aluminum nail from contacting the sealing nail during welding, causing the nail to be burned; the sealing nail is divided into three parts: upper, middle and lower. The upper part is interference fit with the lower part of the injection hole, and the middle part is 0.1-0.3mm larger in diameter than the upper part. When the air pressure in the battery increases, this part will get stuck with the lower surface of the injection hole, so that the rubber nail will not be pushed by the air pressure. Due to the interference fit, the lower part of the rubber nail is conical, which can play a guiding role. The outer side of the sealing aluminum nail is fixedly connected to the inner wall of the injection hole; The bottom of the pole base is fixedly connected to the top of the pole ear, and the outer side of the upper base plate is fixedly connected to the inner wall of the protective device; The explosion-proof valve plate is configured as an elliptical plate body with a plurality of strip-shaped air holes on the surface, and the explosion-proof valve sheet is configured as an elliptical sheet with a Y-shaped notch on the surface. The bottom of the circular concave hole passes through the upper substrate and extends to the bottom of the lower substrate. The inner wall of the circular concave hole is fixedly connected to the outer side of the sealing ring, and the bottom of the injection hole passes through the upper substrate and extends to the bottom of the lower substrate.

[0004] Furthermore, the protective device includes a sleeve-type aluminum shell, the outer side of the sleeve-type aluminum shell is fixedly connected with a re-pressure mechanism, both sides of the sleeve-type aluminum shell are provided with large circular holes, the inner wall of the large circular hole is fixedly connected with an annular wave plate, the side of the annular wave plate away from the large circular hole is fixedly connected with a circular plate, a first circular groove is provided on one side of the circular plate, a built-in circular groove is provided on the inner wall of the first circular groove, a certain area is vacated to facilitate gas flow by providing the built-in circular groove between the first circular groove and the second circular hole, and the gap between the staggered first circular groove and the second circular hole is small, which causes the airflow to be difficult to pass quickly and affects the heat dissipation efficiency, and the second circular hole is provided on the inner wall of the built-in circular groove, and the first circular groove, the built-in circular groove and the second circular hole are provided on the circular plate to facilitate the heat in the sleeve-type aluminum shell to flow outward and dissipate, so as to prevent the gradually increased heat inside the sleeve-type aluminum shell from being difficult to dissipate after the lithium battery is used for a long time and affecting the use efficiency of the lithium battery, and by providing the first circular groove The staggered distribution with the second circular hole on the circular plate is convenient for blocking debris, preventing the lithium battery from exploding and directly splashing outward through the heat dissipation holes, which is difficult to intercept and causes safety hazards. The outer side of the circular plate is provided with an arc-shaped through hole connected to the built-in circular groove. By opening a plurality of arc-shaped through holes on the outer side of the circular plate, debris such as electrolyte accumulated in the built-in circular groove can be discharged, preventing the built-in circular groove from gradually accumulating more and more debris and being difficult to discharge, which affects the airflow and causes poor heat dissipation effect. The inner wall of the sleeve-type aluminum shell is fixedly connected to the outer side of the upper substrate, the inner wall of the sleeve-type aluminum shell is fixedly connected to the outer side of the insulating tape, and the bottom of the inner wall of the sleeve-type aluminum shell is fixedly connected to the bottom of the bottom support sheet. There are a plurality of large circular holes, and the plurality of large circular holes are distributed on the outer side of the sleeve-type aluminum shell. There are a plurality of re-pressing mechanisms, and the plurality of re-pressing mechanisms are respectively distributed inside the large circular holes. One side of the re-pressing mechanism is fixedly connected to one side of the circular plate close to the first circular groove.

[0005] Furthermore, the re-pressure mechanism includes an arc-shaped connecting rod, one end of which is fixedly connected to a first ring plate, and one side of the first ring plate is fixedly connected to a return spring, and a return spring is arranged between the first ring plate and the second ring plate to utilize an elastic connection to cause the circular plate to drive the surrounding air to flow in the region, thereby preventing the heated gas in the sleeve-type aluminum shell from being affected by the staggered distribution of the first circular groove and the second circular hole, thereby preventing the flow velocity from being low and resulting in low heat dissipation efficiency, and the end of the return spring away from the first ring plate is fixedly connected to the second ring plate, and an arc-shaped sliding rod is fixedly connected to the outer side of the second ring plate, and three arc-shaped sliding rods are arranged on the outer side of the second ring plate to slide and limit the elastically connected circular plate, thereby preventing the elastically connected circular plate from being unevenly stressed during intermittent movement and causing deviation and tilting, which affects the annular wave plate. The annular scraper is sleeved on the outer side of the arc-shaped slide bar and fixedly connected thereto, and the annular scraper is arranged on the outer side of the arc-shaped slide bar to cover the angle between the circular plate and the annular wave plate, so as to prevent the electrolyte accidentally seeping from the first circular groove to the annular wave plate from accumulating between the circular plate and the annular wave plate and becoming difficult to handle; the annular scraper which moves with the arc-shaped slide bar scrapes and cleans the inner surface and the concave seam area of ​​the annular wave plate, so as to prevent the electrolyte seeping from the first circular groove from continuously accumulating on the inner side of the annular wave plate and the concave seam area and affecting the use of the annular wave plate; the end of the arc-shaped connecting rod away from the first ring plate is fixedly connected to the outer side of the sleeve aluminum shell, the side of the second ring plate away from the reset spring is fixedly connected to one side of the circular plate, and the end of the arc-shaped slide bar close to the second ring plate is fixedly connected to one side of the circular plate.

[0006] The present invention has the beneficial effects: 1. The present invention reduces the impact of liquid on the pole piece during injection by designing a spoiler structure at the plastic injection hole under the cover plate, protects the pole piece, and prevents the pole piece from being damaged and affecting the use of the lithium battery due to excessive pressure when the injection port is injected due to the small aperture of the injection port. The first circular groove, the built-in circular groove and the second circular hole are provided on the circular plate to facilitate the heat in the sleeve aluminum shell to flow outward and dissipate, thereby preventing the gradually increased heat inside the sleeve aluminum shell from being difficult to dissipate after the lithium battery is used for a long time and affecting the use efficiency of the lithium battery. A reset spring is provided between the first ring plate and the second ring plate to use an elastic connection to prompt the circular plate to drive the surrounding air to flow in the region, thereby preventing the heated gas in the sleeve aluminum shell from being affected by the staggered distribution of the first circular groove and the second circular hole, resulting in low heat dissipation efficiency.

[0007] 2. The present invention provides an assembly device, and a spoiler structure is designed at the plastic injection hole under the cover plate to reduce the impact of the liquid on the pole piece during injection, protect the pole piece, and prevent the pressure from being too high when the injection port is injected due to the small aperture of the injection port, which will damage the pole piece and affect the use of the lithium battery. In addition to the notches on the four sides of the explosion-proof valve sheet, a "Y"-shaped notch is used in the middle of the valve sheet. When the battery is abused, the valve sheet can be opened in time to release the heat in the battery in time. The opening value of the explosion-proof valve can be adjusted by adjusting the notch depth; the explosion-proof valve protection patch is to protect the explosion-proof valve sheet from being damaged by the external environment. The patch is coated with glue on all sides and attached to the cover plate, but in order to balance the air pressure inside the explosion-proof valve with the external air pressure, a hole is often opened in the middle, and there is a risk of electrolyte inflow when injecting electrolyte. In this solution, a part of the adhesive part of the patch is cut off so that the patch is not completely sealed by adhesive, thereby realizing the function of the patch. The bottom of the sealing aluminum nail is grooved to provide a buffer space for the heated air and the vaporized residual electrolyte during welding, and to prevent the sealing aluminum nail from contacting the sealing glue nail during welding.

[0008] 3. The present invention provides a protective device, and provides a first circular groove, a built-in circular groove, and a second circular hole on the circular plate to facilitate the heat in the sleeve aluminum shell to flow outward and dissipate, thereby preventing the gradually increased heat inside the sleeve aluminum shell from being difficult to dissipate after the lithium battery is used for a long time and affecting the use efficiency of the lithium battery. By staggeredly distributing the first circular groove and the second circular hole on the circular plate, it is convenient to block debris, and prevent the lithium battery from directly splashing outward through the heat dissipation holes when it explodes and causing safety hazards. By providing a plurality of arc-shaped through holes on the outer side of the circular plate, debris such as electrolyte accumulated in the built-in circular groove is discharged, and it is prevented that more and more debris gradually accumulates in the built-in circular groove and is difficult to discharge, affecting the flow of airflow and causing poor heat dissipation effect. By providing a built-in circular groove between the first circular groove and the second circular hole, a certain area is vacated to facilitate gas flow, and it is prevented that the gap between the staggered first circular groove and the second circular hole is small, resulting in difficulty for airflow to pass quickly and affecting heat dissipation efficiency.

[0009] 4. The present invention sets a re-pressure mechanism, sets a return spring between the first ring plate and the second ring plate, and utilizes the elastic connection to prompt the circular plate to drive the surrounding air to flow in the region, thereby preventing the heated gas in the sleeve-type aluminum shell from being affected by the staggered distribution of the first circular groove and the second circular hole, resulting in a low flow velocity and low heat dissipation efficiency. Three arc sliding bars are set on the outer side of the second ring plate to slide and limit the elastically connected circular plate, thereby preventing the elastically connected circular plate from being unevenly stressed and tilted during intermittent movement, thereby preventing the annular wave plate from being damaged. An annular scraper is set on the outer side of the arc sliding bar to cover the angle between the circular plate and the annular wave plate, thereby preventing the electrolyte that accidentally seeps from the first circular groove to the annular wave plate from accumulating between the circular plate and the annular wave plate and being difficult to handle. The annular scraper that moves with the arc sliding bar scrapes and cleans the inner surface and the concave seam area of ​​the annular wave plate, thereby preventing the electrolyte that seeps from the first circular groove from continuously accumulating on the inner side of the annular wave plate and the concave seam area and affecting the use of the annular wave plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the lithium battery of the present invention; Figure 2 This is a schematic diagram of the internal structure of the lithium battery of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the assembly device of the present invention; Figure 4 It is a schematic diagram of the structure of the assembly device of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the assembly device of the present invention; Figure 6 It is a schematic diagram of the side cross-section structure of the bottom of the protective device of the present invention; Figure 7 It is a schematic diagram of a partial side section structure of the protective device of the present invention; Figure 8 It is a schematic diagram of the enlarged structure of the partial side section A of the protective device of the present invention; Fig. 9 It is a schematic diagram of the structure of the protective device of the present invention; Fig.10 It is a schematic diagram of the side structure of the protective device of the present invention; In the figure: 1. winding core; 2. pole ear; 3. insulating tape; 4. protective plate; 5. assembly device; 6. protective device; 7. bottom support plate; 8. infiltration hole; 9. vent hole; 10. rounded square hole; 501. lower substrate; 502. lower plastic; 503. explosion-proof valve hole 1; 504. explosion-proof valve plate; 505. pole base; 506. sealing ring; 507. explosion-proof valve plate; 508. upper substrate; 509. explosion-proof valve hole 2; 510. explosion-proof valve protection patch; 511. circular concave hole; 512. circular pole ; 513, upper plastic; 514, injection hole; 515, sealing glue nail; 516, sealing aluminum nail; 601, sleeve aluminum shell; 602, re-pressing mechanism; 603, large circular hole; 604, annular wave plate; 605, circular plate; 606, first circular groove; 607, built-in circular groove; 608, second circular hole; 609, arc-shaped through hole; 6021, arc-shaped connecting rod; 6022, first ring plate; 6023, reset spring; 6024, second ring plate; 6025, arc-shaped sliding rod; 6026, annular scraper. DETAILED DESCRIPTION

[0011] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0012] For the first embodiment, please refer to Figure 1-Figure 5 The present invention is a lithium battery that can be assembled quickly, comprising: A winding core 1, with a pole ear 2 disposed on the top of the winding core 1; An insulating tape 3, a protective plate 4 is provided on the top of the insulating tape 3; An assembly device 5, which is used to quickly assemble and seal the position of the pole ear 2 of the winding core 1; A protective device 6, which is used to wrap and cover the winding core 1, and the inner wall of the protective device 6 is provided with a bottom support sheet 7; The top of the winding core 1 is fixedly connected to the bottom of the pole ear 2, the top of the pole ear 2 is fixedly connected to one side of the assembly device 5, the inner side of the insulating tape 3 is fixedly connected to the outer side of the winding core 1, the top of the insulating tape 3 is fixedly connected to the bottom of the protective plate 4, the inner side of the insulating tape 3 is fixedly connected to the outer side of the bottom support sheet 7, the top of the bottom support sheet 7 is fixedly connected to the bottom of the winding core 1, the outer side of the insulating tape 3 is fixedly connected to the inner side of the protective device 6, the bottom of the inner wall of the protective device 6 is fixedly connected to the bottom of the bottom support sheet 7, and the inner wall of the protective device 6 is fixedly connected to the outer side of the assembly device 5; Wherein, the assembling device 5 comprises: A lower substrate 501, wherein a lower plastic 502 is disposed on the inner side of the lower substrate 501; The bottom surface of the lower plastic 502 is configured as a cross-shaped spoiler structure; The inner side of the lower substrate 501 is fixedly connected to the top of the lower plastic 502; The bottom of the bottom support sheet 7 is provided with an infiltration hole 8, the top of the protective plate 4 is provided with an air release hole 9, and the top of the protective plate 4 is provided with a rounded square hole 10; An explosion-proof valve hole 1 503 is provided at the top of the lower substrate 501, an explosion-proof valve plate 504 is fixedly connected to the inner side of the lower substrate 501, a pole base 505 is fixedly connected to the inner side of the lower substrate 501, a sealing ring 506 is fixedly connected to the top of the pole base 505, an explosion-proof valve plate 507 is fixedly connected to the top of the lower substrate 501, an upper substrate 508 is fixedly connected to the top of the lower substrate 501, an explosion-proof valve hole 2 509 connected to the explosion-proof valve hole 1 503 is provided at the bottom of the upper substrate 508, and an explosion-proof valve hole 309 is provided at the bottom of the upper substrate 508. An explosion-proof valve protection patch 510 is fixedly connected to the top, a circular concave hole 511 is opened on the top of the upper substrate 508, a circular pole 512 is fixedly connected to the inner wall of the sealing ring 506, and an upper plastic 513 is sleeved and fixedly connected to the outer side of the circular pole 512, and a liquid injection hole 514 is opened on the top of the upper substrate 508, and a sealing glue nail 515 is slidably connected to the inner wall of the liquid injection hole 514, and a sealing aluminum nail 516 is arranged on the top of the sealing glue nail 515, and the outer side of the sealing aluminum nail 516 is fixedly connected to the inner wall of the liquid injection hole 514; The bottom of the pole base 505 is fixedly connected to the top of the pole ear 2, and the outer side of the upper base plate 508 is fixedly connected to the inner wall of the protective device 6; The explosion-proof valve plate 504 is configured as an elliptical plate body with multiple strip-shaped air holes on the surface, and the explosion-proof valve plate 507 is configured as an elliptical plate with Y-shaped notches on the surface. The bottom of the circular concave hole 511 passes through the upper substrate 508 and extends to the bottom of the lower substrate 501. The inner wall of the circular concave hole 511 is fixedly connected to the outer side of the sealing ring 506. The bottom of the injection hole 514 passes through the upper substrate 508 and extends to the bottom of the lower substrate 501. When in use, after the two winding cores 1 are combined, the pole ear 2 is fixed by ultrasonic welding; then the protective plate 4 is covered, so that the pole ear 2 is inserted into the reserved rounded square hole 10 to cooperate with the winding core 1; the protective plate 4 is used to replace the glue insulation process. The cover plate can prevent the pole ear 2 from being inserted upside down, play the role of insulation protection, and make the pole ear 2 flatter, reduce the space occupied by the pole ear 2, and improve the energy density of the battery cell; then wrap the insulating tape 3 (instead of Mylar) around the battery cell, and reserve a certain distance of tape above and below, and fold it to fix it to the protective plate 4 and the bottom support sheet 7; wrap the insulating tape 3 (instead of Mylar) around the battery cell, and reserve a certain distance of tape above and below, and fold it to fix it to the protective cover plate and the bottom support sheet 7. This solution can simplify the process, replace the existing battery Mylar, save the hot melt process, and reduce the cost; then bend and weld the battery cell pole ear 2 and the assembly device 5 at an angle of 60°, and weld the pole ear 2 to the pole column; bend and weld the battery cell pole ear 2 and the cover plate at an angle of 60°, and weld the pole ear 2 to the pole column. The height of the pole ear 2 can be saved, and the material cost can be saved; finally, the shell is put in, and the assembly device 5 is connected to the aluminum shell by laser welding. When the lithium battery is pushed or shaken during use, the protective device 6 will intermittently compress the air between the inside and the winding core 1 to dissipate heat and cool down. The plastic 502 under the cover plate has a designed spoiler structure at the injection hole 514 to reduce the impact of the liquid on the pole piece during injection and protect the pole piece; the protrusion and groove at the pole column of the cover plate can increase the torsion resistance of the pole column. The pole ear 2 is welded on the pole column base 505, eliminating the connecting plate used in the existing battery cell, saving costs. The length of the pole column base 505 can be adjusted according to the center distance of the pole ear 2; in addition to the notches around the explosion-proof valve sheet 507, a "Y"-shaped notch is used in the middle of the valve sheet. When the battery is abused, the valve sheet can be opened in time, and the heat in the battery can be released in time. The opening value of the explosion-proof valve can be adjusted by adjusting the notch depth; the explosion-proof valve protection patch 510 is to protect the explosion-proof valve sheet 507 from being damaged by the external environment. The patch is coated with glue all around and attached to the cover plate, but in order to balance the air pressure inside the explosion-proof valve and the outside air pressure, a hole is often opened in the middle, and there is a risk of electrolyte inflow when injecting electrolyte. This solution cuts off a part of the adhesive part of the patch so that the patch is not completely sealed by glue, thereby realizing the function of the patch; the injection hole 514 is divided into an upper part and a lower part; the upper opening is large, and cooperates with the injection nozzle to inject liquid, with a certain inclination angle to guide the residual electrolyte. After the liquid is injected, this part cooperates with the sealing aluminum nail 516 for welding and sealing.The lower part is a through hole, which is sealed with the sealing glue nail 515 after the liquid is injected. Since the sealing glue nail 515 is an interference fit, there is a 0.2-0.5mm chamfer on the upper part of the through hole, which plays a guiding role and prevents the glue nail from being scraped out of burrs; the sealing aluminum nail 516 is in a clearance fit with the injection hole 514, the peripheral clearance is between 0.1-0.3mm, and the gap between the bottom and the injection hole 514 is 0.05-0.1mm. If the sealing nail and the injection hole 514 are in an interference fit, the sealing nail is easy to lift up during welding, resulting in explosion points and cracks; if the gap is too large, it affects the welding depth and width. The bottom of the sealing aluminum nail 516 is slotted, which can not only provide a buffer space for the heated air and the vaporized residual electrolyte during welding, but also prevent the sealing aluminum nail 516 from contacting the sealing glue nail 515 during welding, causing the glue nail to be burned; the sealing glue nail 515 is divided into three parts: upper, middle and lower. The upper part is interference fit with the lower part of the injection hole 514, and the middle part is 0.1-0.3mm larger in diameter than the upper part. When the air pressure in the battery increases, this part will be stuck with the lower surface of the injection hole 514, so that the rubber nail will not be pushed by the air pressure. Due to the interference fit, the lower part of the rubber nail is conical, which can play a guiding role.

[0013] For the second embodiment, please refer to Figure 1-Figure 10 The present invention provides a lithium battery that can be quickly assembled: the protective device 6 includes a sleeve aluminum shell 601, the outer side of the sleeve aluminum shell 601 is fixedly connected to a re-pressing mechanism 602, both sides of the sleeve aluminum shell 601 are provided with large circular holes 603, the inner wall of the large circular hole 603 is fixedly connected to an annular wave plate 604, the side of the annular wave plate 604 away from the large circular hole 603 is fixedly connected to a circular plate 605, one side of the circular plate 605 is provided with a first circular groove 606, the inner wall of the first circular groove 606 is provided with an inner circular groove 607, the inner wall of the inner circular groove 607 is provided with a second circular hole 608, the outer side of the circular plate 605 is provided with a An arc-shaped through hole 609 connected to the built-in circular groove 607 is provided, the inner wall of the sleeve aluminum shell 601 is fixedly connected to the outer side of the upper substrate 508, the inner wall of the sleeve aluminum shell 601 is fixedly connected to the outer side of the insulating tape 3, the bottom of the inner wall of the sleeve aluminum shell 601 is fixedly connected to the bottom of the bottom support sheet 7, a plurality of large circular holes 603 are provided, and the plurality of large circular holes 603 are distributed on the outer side of the sleeve aluminum shell 601, a plurality of re-pressing mechanisms 602 are provided, and the plurality of re-pressing mechanisms 602 are respectively distributed inside the large circular holes 603, and one side of the re-pressing mechanism 602 is fixedly connected to one side of the circular plate 605 close to the first circular groove 606; The re-pressing mechanism 602 includes an arc-shaped connecting rod 6021, one end of which is fixedly connected to a first ring plate 6022, one side of which is fixedly connected to a return spring 6023, one end of which is far away from the first ring plate 6022 is fixedly connected to a second ring plate 6024, an outer side of the second ring plate 6024 is fixedly connected to an arc-shaped sliding rod 6025, an outer side of the arc-shaped sliding rod 6025 is sleeved and fixedly connected to an annular scraper 6026, one end of the arc-shaped connecting rod 6021 away from the first ring plate 6022 is fixedly connected to the outer side of the sleeve aluminum shell 601, one side of the second ring plate 6024 away from the return spring 6023 is fixedly connected to one side of the circular plate 605, and the arc-shaped sliding rod 6025 is close to the first ring plate 6024. One end of the second ring plate 6024 is fixedly connected to one side of the circular plate 605. When in use, the sleeve aluminum shell 601 is sleeved on the outside of the winding core 1 wrapped by the insulating tape 3 to protect the winding core 1. If the lithium battery is subjected to pushing pressure or shaking force during use, the re-pressing mechanism 602 will intermittently push the circular plate 605 to compress the air between the sleeve aluminum shell 601 and the winding core 1, so that the air passes through the second circular hole 608, the built-in circular groove 607 and the first circular groove 606 in turn to dissipate the heat in the sleeve aluminum shell 601. By opening the first circular groove 606, the built-in circular groove 607 and the second circular hole 608 on the circular plate 605, the heat in the sleeve aluminum shell 601 can flow outward and dissipate. By staggering the first circular groove 606 and the second circular hole 608 on the circular plate 605, it is convenient to block the debris. The intercepted debris will fall into the built-in circular groove 607 and be discharged to the outside through the arc through hole 609. By opening a plurality of arc through holes 609 on the outside of the circular plate 605, the electrolyte and other debris accumulated in the built-in circular groove 607 can be discharged. By opening the built-in circular groove 607 between the first circular groove 606 and the second circular hole 608, a certain area is vacated to facilitate the flow of gas. When the circular plate 605 moves, it drives the annular wave plate 604 on one side to extend or contract together. If the lithium battery is subjected to pushing pressure or shaking force during use, it will drive the elastically connected second ring plate 6024, the arc slide bar 6025 and The circular plate 605 moves intermittently, and a return spring 6023 is set between the first ring plate 6022 and the second ring plate 6024 to utilize elastic connection to cause the circular plate 605 to drive the surrounding air to flow in the region, and three arc-shaped slide bars 6025 are set on the outside of the second ring plate 6024 to slide and limit the elastically connected circular plate 605, and an annular scraper 6026 is set on the outside of the arc-shaped slide bar 6025 to cover the angle between the circular plate 605 and the annular wave plate 604. When the arc-shaped slide bar 6025 moves, the annular scraper 6026 on the outside is driven to move together, and the annular scraper 6026 that moves with the arc-shaped slide bar 6025 scrapes and cleans the inner surface and the concave seam area of ​​the annular wave plate 604.

[0014] When the present invention is used, after the two winding cores 1 are combined, the pole ear 2 is fixed by ultrasonic welding; then the protective plate 4 is covered, and the pole ear 2 is inserted into the reserved rounded square hole 10 to cooperate with the winding core 1; the protective plate 4 is used to replace the glue insulation process. The cover plate can prevent the pole ear 2 from being inserted upside down, play the role of insulation protection, and can make the pole ear 2 more flat, reduce the space occupied by the pole ear 2, and improve the energy density of the battery cell; then wrap the insulating tape 3 (instead of Mylar) around the battery cell, and reserve a certain distance of tape above and below, and fold it to fix it to the protective plate 4 and the bottom support sheet 7; wrap the insulating tape 3 (instead of Mylar) around the battery cell, and reserve a certain distance of tape above and below, and fold it to fix it to the protective cover plate and the bottom support sheet 7. This solution can simplify the process, replace the existing Mylar battery, save the hot melt process, and reduce costs; then the battery cell tab 2 and the assembly device 5 are bent and welded at an angle of 60°, and the tab 2 is welded and fixed to the pole; the battery cell tab 2 and the cover plate are bent and welded at an angle of 60°, and the tab 2 is welded and fixed to the pole. The height of the tab 2 can be saved, and the material cost can be saved; finally, the shell is put in, and the assembly device 5 is connected to the aluminum shell by laser welding. When the lithium battery is pushed or shaken during use, the protective device 6 will intermittently compress the air between the inside and the winding core 1 to dissipate heat and cool down. The plastic 502 under the cover plate has a designed spoiler structure at the injection hole 514 to reduce the impact of the liquid on the pole piece during injection and protect the pole piece; the protrusions and grooves at the pole column of the cover plate can increase the torsion resistance of the pole column. The tab 2 is welded on the pole column base 505, eliminating the connecting piece used in the existing battery cell, saving costs. The length of the pole base 505 can be adjusted according to the center distance of the pole ear 2; the explosion-proof valve plate 507 has notches on all sides, and a "Y"-shaped notch is used in the middle of the valve plate. When the battery is abused, the valve plate can be opened in time, and the heat in the battery can be released in time. The opening value of the explosion-proof valve can be adjusted by adjusting the notch depth; the explosion-proof valve protection patch 510 is to protect the explosion-proof valve plate 507 from being damaged by the external environment. The patch is coated with glue on all sides and attached to the cover plate, but in order to balance the air pressure inside the explosion-proof valve and the outside air pressure, a hole is often opened in the middle, and there is a risk of electrolyte inflow when injecting electrolyte. This solution cuts off a part of the glued part of the patch, so that the patch is not completely sealed by glue, thereby realizing the function of the patch; the injection hole 514 is divided into an upper part and a lower part; the upper opening is large, and cooperates with the injection nozzle to inject liquid, with a certain inclination angle, to guide the residual electrolyte. After the liquid is injected, this part cooperates with the sealing aluminum nail 516 for welding and sealing. The lower part is a through hole, which is sealed with the sealing nail 515 after the liquid is injected. Since the sealing nail 515 is an interference fit, there is a 0.2-0.5mm chamfer on the upper part of the through hole to guide and prevent the nail from being scraped out of burrs; the sealing aluminum nail 516 is in a clearance fit with the injection hole 514, the peripheral clearance is between 0.1-0.3mm, and the clearance between the bottom and the injection hole 514 is 0.05-0.1mm. If the sealing nail and the injection hole 514 are in an interference fit, the sealing nail is easy to lift during welding, resulting in explosion points and cracks; if the clearance is too large, it affects the welding depth and width.The bottom of the sealing aluminum nail 516 is slotted, which can not only provide a buffer space for the heated air and the vaporized residual electrolyte during welding, but also prevent the sealing aluminum nail 516 from contacting the sealing glue nail 515 during welding, causing the glue nail to be burned; the sealing glue nail 515 is divided into three parts: upper, middle and lower. The upper part is interference fit with the lower part of the injection hole 514, and the middle part is 0.1-0.3mm larger in diameter than the upper part. When the air pressure in the battery increases, this part will be stuck with the lower surface of the injection hole 514, so that the glue nail will not be pushed by the air pressure. Due to the interference fit, the lower part of the rubber nail is conical, which can play a guiding role. The sleeve aluminum shell 601 is sleeved on the outside of the winding core 1 wrapped by the insulating tape 3 to protect the winding core 1. If the lithium battery is subjected to pushing pressure or shaking force during use, the re-pressing mechanism 602 will intermittently push the circular plate 605 to compress the air between the sleeve aluminum shell 601 and the winding core 1, so that the air passes through the second circular hole 608, the built-in circular groove 607 and the first circular groove 606 in turn to dissipate the heat in the sleeve aluminum shell 601. The circular plate 605 is provided with a first circular groove 606, a built-in circular groove 607 and a second circular hole 608 to facilitate the heat in the sleeve-type aluminum shell 601 to flow outward and dissipate. The first circular groove 606 and the second circular hole 608 are arranged on the circular plate 605 in a staggered manner to block debris. The intercepted debris will fall into the built-in circular groove 607 and be discharged to the outside through the arc-shaped through hole 609. A plurality of arc-shaped through holes 609 are provided on the outside of the circular plate 605 to discharge debris such as electrolyte accumulated in the built-in circular groove 607. A built-in circular groove 607 is provided between the first circular groove 606 and the second circular hole 608 to leave a certain area for gas flow. When the circular plate 605 moves, the annular wave plate 604 on one side is driven to extend or contract together. If the lithium battery is subjected to a pushing force or a shaking force during use, the elastically connected second ring plate 6024, the arc-shaped slide bar 6025 and the circular plate 605 will be driven to move intermittently. A return spring 6023 is provided between the first ring plate 6022 and the second ring plate 6024 to use the elastic connection to promote the circular plate 605 The surrounding air is driven to flow in the region. Three arc-shaped sliding bars 6025 are arranged on the outside of the second ring plate 6024 to slide and limit the elastically connected circular plate 605. An annular scraper 6026 is arranged on the outside of the arc-shaped sliding bar 6025 to cover the angle between the circular plate 605 and the annular wave plate 604. When the arc-shaped sliding bar 6025 moves, the annular scraper 6026 on the outside is driven to move together. The annular scraper 6026 that moves with the arc-shaped sliding bar 6025 scrapes and cleans the inner surface and the concave seam area of ​​the annular wave plate 604.

[0015] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A lithium battery that can be assembled quickly, characterized in that: include: A winding core (1), wherein a pole ear (2) is arranged on the top of the winding core (1); An insulating tape (3), wherein a protective plate (4) is provided on the top of the insulating tape (3); An assembly device (5), the assembly device (5) being used to quickly assemble and seal the position of the pole lug (2) of the winding core (1); A protective device (6), the protective device (6) being used to wrap and cover the winding core (1) for protection, the inner wall of the protective device (6) being provided with a bottom supporting sheet (7); The top of the winding core (1) is fixedly connected to the bottom of the pole ear (2), the top of the pole ear (2) is fixedly connected to one side of the assembly device (5), the inner side of the insulating tape (3) is fixedly connected to the outer side of the winding core (1), the top of the insulating tape (3) is fixedly connected to the bottom of the protective plate (4), the inner side of the insulating tape (3) is fixedly connected to the outer side of the bottom support sheet (7), the top of the bottom support sheet (7) is fixedly connected to the bottom of the winding core (1), the outer side of the insulating tape (3) is fixedly connected to the inner side of the protective device (6), the bottom of the inner wall of the protective device (6) is fixedly connected to the bottom of the bottom support sheet (7), and the inner wall of the protective device (6) is fixedly connected to the outer side of the assembly device (5); Wherein, the assembling device (5) comprises: A lower substrate (501), wherein a lower plastic (502) is arranged on the inner side of the lower substrate (501); The bottom surface of the lower plastic (502) is arranged as a cross-shaped spoiler structure; The inner side of the lower base plate (501) is fixedly connected to the top of the lower plastic (502).

2. A rapidly assembled lithium battery according to claim 1, characterized in that: The bottom of the bottom support sheet (7) is provided with an infiltration hole (8), the top of the protective plate (4) is provided with an air leakage hole (9), and the top of the protective plate (4) is provided with a rounded square hole (10).

3. A lithium battery that can be quickly assembled according to claim 1, characterized in that: The top of the lower substrate (501) is provided with an explosion-proof valve hole 1 (503); the inner side of the lower substrate (501) is fixedly connected with an explosion-proof valve plate (504); the inner side of the lower substrate (501) is fixedly connected with a pole base (505); the top of the pole base (505) is fixedly connected with a sealing ring (506); the top of the lower substrate (501) is fixedly connected with an explosion-proof valve plate (507); the top of the lower substrate (501) is fixedly connected with an upper substrate (508); the bottom of the upper substrate (508) is provided with an explosion-proof valve hole 2 (509) connected to the explosion-proof valve hole 1 (503); the upper substrate (508) ) is fixedly connected to the top of an explosion-proof valve protection patch (510), a circular concave hole (511) is provided on the top of the upper base plate (508), a circular pole (512) is fixedly connected to the inner wall of the sealing ring (506), an upper plastic (513) is sleeved and fixedly connected to the outer side of the circular pole (512), a liquid injection hole (514) is provided on the top of the upper base plate (508), a sealing glue nail (515) is slidably connected to the inner wall of the liquid injection hole (514), a sealing aluminum nail (516) is provided on the top of the sealing glue nail (515), and the outer side of the sealing aluminum nail (516) is fixedly connected to the inner wall of the liquid injection hole (514).

4. A rapidly assembled lithium battery according to claim 3, characterized in that: The bottom of the pole base (505) is fixedly connected to the top of the pole ear (2), and the outer side of the upper base plate (508) is fixedly connected to the inner wall of the protective device (6).

5. A lithium battery capable of rapid assembly according to claim 3, characterized in that: The explosion-proof valve plate (504) is configured as an elliptical plate having a plurality of strip-shaped air holes on its surface; the explosion-proof valve plate (507) is configured as an elliptical plate having a Y-shaped notch on its surface; the bottom of the circular concave hole (511) penetrates the upper substrate (508) and extends to the bottom of the lower substrate (501); the inner wall of the circular concave hole (511) is fixedly connected to the outer side of the sealing ring (506); and the bottom of the injection hole (514) penetrates the upper substrate (508) and extends to the bottom of the lower substrate (501).

6. A rapidly assembled lithium battery according to claim 1, characterized in that: The protective device (6) comprises a sleeve-type aluminum shell (601), the outer side of the sleeve-type aluminum shell (601) is fixedly connected to a re-pressing mechanism (602), both sides of the sleeve-type aluminum shell (601) are provided with large circular holes (603), the inner wall of the large circular hole (603) is fixedly connected to an annular wave plate (604), the side of the annular wave plate (604) away from the large circular hole (603) is fixedly connected to a circular plate (605), one side of the circular plate (605) is provided with a first circular groove (606), the inner wall of the first circular groove (606) is provided with a built-in circular groove (607), the inner wall of the built-in circular groove (607) is provided with a second circular hole (608), and the outer side of the circular plate (605) is provided with an arc-shaped through hole (609) connected to the built-in circular groove (607).

7. A lithium battery capable of rapid assembly according to claim 6, characterized in that: The inner wall of the sleeve-type aluminum shell (601) is fixedly connected to the outer side of the upper base plate (508), the inner wall of the sleeve-type aluminum shell (601) is fixedly connected to the outer side of the insulating tape (3), and the bottom of the inner wall of the sleeve-type aluminum shell (601) is fixedly connected to the bottom of the bottom support plate (7).

8. A rapidly assembled lithium battery according to claim 6, characterized in that: A plurality of the large circular holes (603) are provided, and the plurality of the large circular holes (603) are distributed outside the sleeve-type aluminum shell (601); a plurality of the re-pressing mechanisms (602) are provided, and the plurality of the re-pressing mechanisms (602) are respectively distributed inside the large circular holes (603); one side of the re-pressing mechanism (602) is fixedly connected to a side of the circular plate (605) close to the first circular groove (606).

9. A rapidly assembled lithium battery according to claim 6, characterized in that: The re-pressure mechanism (602) comprises an arc-shaped connecting rod (6021), one end of which is fixedly connected to a first ring plate (6022), one side of which is fixedly connected to a return spring (6023), one end of which is away from the first ring plate (6022) is fixedly connected to a second ring plate (6024), an outer side of the second ring plate (6024 is fixedly connected to an arc-shaped sliding rod (6025), and an annular scraper (6026) is sleeved and fixedly connected to the outer side of the arc-shaped sliding rod (6025).

10. A lithium battery capable of rapid assembly according to claim 9, characterized in that: One end of the arc-shaped connecting rod (6021) away from the first ring plate (6022) is fixedly connected to the outer side of the sleeve-type aluminum shell (601), one side of the second ring plate (6024) away from the return spring (6023) is fixedly connected to one side of the circular plate (605), and one end of the arc-shaped sliding rod (6025) close to the second ring plate (6024) is fixedly connected to one side of the circular plate (605).

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