Lithium battery injection device

Abstract

The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery filling device, comprising a base plate, one end of the base plate is fixedly connected to a support plate, the upper end of the base plate is fixedly connected to a fixed plate, the support plate is provided with a staggered discharge structure, the staggered discharge structure comprises a staggered feeding assembly and a discharge assembly matched with the staggered feeding assembly, the staggered feeding assembly comprises a spiral rod rotatably connected to the fixed plate, one end of the spiral rod is provided with an auxiliary baffle connected to the support plate, a lithium battery that moves along the axial direction of the spiral rod while rotating is provided between the auxiliary baffle and the spiral rod, one end of the storage barrel is fixedly connected to a mounting plate, and the mounting plate is provided with a variable distance liquid injection structure matched with the staggered discharge structure, which effectively solves the problem of misalignment with the liquid injection device and low infiltration efficiency due to inertial displacement when the displacement of the lithium battery shell is transmitted in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery liquid injection device. Background Art

[0002] Due to the excellent properties of lithium batteries, they are gradually accepted by the market and their production scale is rapidly expanding. In the production process of lithium batteries, injecting liquid into the lithium battery shell is an important step in the lithium battery processing process.

[0003] In the lithium battery filling process, it is a common processing method to control the conveyor belt to stop working at a fixed time to move the lithium battery casing to the bottom of the filling device. However, to ensure that the lithium battery casing stays at the bottom of the filling device and is aligned with the filling device, the staff needs to place the lithium battery casing accurately, or set a spacing adjustment device to stop the spacing of the lithium battery casing. The cost investment is high, and it is easy for the lithium battery casing to be displaced by inertia and misaligned with the filling device due to the stopping of the conveyor belt.

[0004] In addition, after injecting electrolyte into the lithium battery, the lithium battery needs to be left standing for a period of time to allow the electrolyte to fully infiltrate the electrode, resulting in low infiltration efficiency. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a lithium battery filling device which effectively solves the problem of misalignment with the filling device and low infiltration efficiency caused by inertial displacement during the displacement transmission of the lithium battery shell in the prior art.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The lifting of the ...

[0008] The offset feeding assembly also includes a motor connected to the bottom plate, the output end of the motor is fixedly connected to the screw rod, an end rod connected to the support plate is arranged between the screw rod and the auxiliary baffle, a number of rubber strips corresponding to the lithium batteries are evenly arranged on the auxiliary baffle, a number of elastic air bags are evenly arranged on the rubber strips, and a connecting plate fixedly connected to the support plate is arranged at the end of the screw rod.

[0009] The discharging assembly also includes a turntable fixedly connected to the output end of the motor, a protrusion is arranged on the edge side of the turntable, a discharge hole is opened at one end of the storage barrel, a bracket fixedly connected to the storage barrel is arranged opposite to the discharge hole, a slide plate is slidably connected to the bracket, a first sliding pin corresponding to the protrusion is arranged at one end of the slide plate, a retaining ring is arranged on the first sliding pin, a spring connected to the first sliding pin sleeve is arranged between the retaining ring and the bracket, fixing columns are respectively fixedly connected to both ends of the slide plate, one end of the fixing column is fixedly connected to the hoop plate, a fixing frame fixedly connected to the storage barrel is arranged at one end of the fixing plate, and an open barrel is arranged at the upper end of the storage barrel.

[0010] The variable pitch injection structure also includes a first spur gear fixedly connected to the output end of the motor, the first spur gear meshing with a second spur gear, the second spur gear fixedly connected to a rotating rod, one end of the rotating rod is fixedly connected to an inner groove rod, a closed-loop inner slide groove is provided on the inner groove rod, one end of the auxiliary baffle is fixedly connected to a limiting plate, a limiting groove is provided on the limiting plate, a fixed rod is slidably connected in the limiting groove, a second pin meshing with the inner slide groove on the inner groove rod is provided at the lower end of the fixed rod, and a fixed shaft block is fixedly connected to the upper end of the fixed rod.

[0011] The cam is provided with a plurality of sliding blocks slidably connected to the mounting plate, and the mounting plate is provided with a limiting slider slidably connected to the inner wall of the sliding block. The electrolyte injector is provided with a second sliding pin slidably connected to the fixing block and the inner wall of the sliding block at one end of the electrolyte injector, and a first latch is provided at one end of the electrolyte injector on the sliding block. The mounting plate is symmetrically provided with a plurality of limiting inclined grooves corresponding to the first latch at two ends of the mounting plate, and the electrolyte injector on the fixing block is fixedly connected to the first shaft block, and the electrolyte injectors on the sliding blocks adjacent to the fixing block are respectively fixedly connected to the second shaft blocks, the first shaft block is provided with a sliding rod slidably connected to the second shaft block, and the upper end of the electrolyte injector is provided with a The cam is an angular channel that is configured to connect the plurality of coupling members, the plurality of coupling members have respective opposite ends, and the plurality of coupling members have respective opposite ends.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention sets a staggered feeding assembly, and the screw rod rotates. Since the screw rod is evenly provided with a plurality of cyclic spiral grooves, and the spacing between each spiral groove is the same, and due to the extrusion of the auxiliary baffle, the screw rod drives the lithium battery to move along the axial direction of the screw rod during the rotation. The lithium battery rotates through the friction with the auxiliary baffle during the movement. When the lithium battery moves horizontally to achieve uniform discharge, since the lithium battery is stored in the spiral groove of the screw rod and the other side has the limiting cooperation of the auxiliary baffle, it can ensure that the lithium battery can automatically discharge evenly and be accurately placed. At the same time, it can also avoid the occurrence of the lithium battery shell being displaced by inertia due to the stop of the conveyor belt and the electrolyte injector being misaligned; the lithium battery after injection is transported out, and the lithium battery rotates during the transportation. Under the action of centrifugal force, the infiltration of the electrolyte in the lithium battery can be accelerated, thereby improving the infiltration efficiency of the pole piece in the lithium battery.

[0014] 2. By setting up a discharge assembly, the protrusion is driven to rotate in a circle during the rotation of the turntable, and because the turntable and the spiral rod are coaxially fixedly connected, when the protrusion contacts and squeezes the first sliding pin once, the spiral rod rotates one circle, which can ensure that a lithium battery is discharged from the storage barrel, and the spiral rod rotates one circle to transport the lithium battery to the next spiral groove; when the protrusion squeezes the first sliding pin, the first sliding pin drives the slide plate to slide along the bracket, and the slide plate drives the hoop plate to move through the fixed column, and the hoop plate is used to push the lithium battery at the bottom of the storage barrel from the discharge hole to the extrusion contact with one end of the spiral rod.

[0015] 3. By setting up a variable distance injection structure, the electrolyte injectors are arranged at equal intervals above the injection port of the lithium battery, and during the spacing process, the electrolyte injectors 30 are lowered at equal distances close to the injection port of the lithium battery to prevent the electrolyte from spilling during injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an axonometric view of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the spiral rod of the present invention;

[0018] Figure 3 It is a structural schematic diagram of the storage barrel of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the hoop plate of the present invention;

[0020] Figure 5 It is a first structural schematic diagram of the variable distance injection structure of the present invention;

[0021] Figure 6 It is a second structural schematic diagram of the variable distance injection structure of the present invention;

[0022] Figure 7 It is a structural schematic diagram of the sliding support block and the fixed support block of the present invention;

[0023] Figure 8 It is a schematic structural diagram of the first end rod and the second end rod of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of the electrolyte injector of the present invention;

[0025] Fig.10 It is a schematic structural diagram of the inner groove rod of the present invention;

[0026] Fig.11 It is a structural schematic diagram of the end face rod of the present invention;

[0027] Fig.12 For the present invention Figure 7 A partial enlarged view of area A;

[0028] Fig.13 For the present invention Figure 5 A local enlarged view of area B;

[0029] In the figure: 1, bottom plate, 2, support plate, 3, connecting plate, 4, screw rod, 5, fixed plate, 6, motor, 7, storage barrel, 8, open barrel, 9, fixed frame, 10, mounting plate, 11, liquid storage tank, 12, auxiliary baffle, 13, limit groove, 14, limit slider, 15, turntable, 16, bump, 17, first straight gear, 18, discharge hole, 19, first sliding pin, 20, baffle ring, 21, spring, 22, bracket, 23, fixed column, 24, slide plate, 25, hoop plate, 26, rubber strip, 27, elastic airbag, 28, second Spur gear, 29, telescopic tube, 30, electrolyte injector, 31, rotating rod, 32, first latch, 33, fixed support block, 34, first end rod, 35, second end rod, 36, first connecting rod, 37, second connecting rod, 38, inner groove rod, 39, limit plate, 40, second latch, 41, fixed rod, 42, fixed shaft block, 43, second sliding pin, 44, end face rod, 45, first shaft block, 46, second shaft block, 47, sliding support rod, 48, limiting inclined groove, 49, injection tube, 50, sliding support block, 51, lithium battery, 52, rotating shaft rod. DETAILED DESCRIPTION

[0030] like Figure 1-13 As shown, a lithium battery injection device comprises a bottom plate 1, one end of the bottom plate 1 is fixedly connected to a support plate 2, the upper end of the bottom plate 1 is fixedly connected to a fixed plate 5, a staggered discharge structure is arranged on the support plate 2, the staggered discharge structure comprises a staggered feeding assembly and a discharge assembly matched with the staggered feeding assembly, the staggered feeding assembly comprises a screw rod 4 rotatably connected to the fixed plate 5, one end of the screw rod 4 is provided with an auxiliary baffle 12 connected to the support plate 2, a baffle plate 12 and the screw rod 4 are arranged between the auxiliary baffle plate 12 and the screw rod 4 There is a lithium battery 51 that moves and rotates along the axial direction of the spiral rod 4. A storage barrel 7 is provided at one end of the fixed plate 5. A plurality of the lithium batteries 51 are provided in the storage barrel 7. The discharge assembly includes a pair of hoop plates 25 corresponding to the lithium batteries 51 in the storage barrel 7. A mounting plate 10 is fixedly connected to one end of the storage barrel 7. A variable-distance injection structure that cooperates with the staggered discharge structure is provided on the mounting plate 10. The variable-distance injection structure includes a plurality of electrolyte injectors 30 that can be adjusted at equal intervals.

[0031] When the present invention is in use, the lithium battery 51 is placed in the storage barrel 7, and the staggered discharge structure works. The discharge assembly discharges the lithium battery 51 in the storage barrel 7 until it contacts the screw rod 4 by controlling the intermittent push of the hoop plate 25. At the same time, the staggered feeding assembly works, and the screw rod 4 rotates. Since a number of cyclic spiral grooves are evenly arranged on the screw rod 4, and the spacing between the spiral grooves is the same, and due to the extrusion of the auxiliary baffle 12, the screw rod 4 drives the lithium battery 51 to move along the axial direction of the screw rod 4 during the rotation. The lithium battery 51 rotates through the friction with the auxiliary baffle 12 during the movement. When the lithium battery 51 moves horizontally to achieve uniform discharge, since the lithium battery 51 is stored in the spiral groove of the screw rod 4, and the other side has the limiting cooperation of the auxiliary baffle 12, it can ensure that the lithium battery 51 can automatically perform uniform discharge and accurate placement, and at the same time, it can also avoid the occurrence of stopping of the conveyor belt. The shell of the lithium battery 51 is displaced due to inertia, and is misaligned with the electrolyte injector 30. In the process of uniformly discharging the lithium battery 51 in the spiral groove of the spiral rod 4, the variable pitch injection structure works to arrange the electrolyte injectors 30 at equal intervals above the injection port of the lithium battery 51. In the process of discharging, the electrolyte injectors 30 are evenly lowered to the injection port of the lithium battery 51 to avoid electrolyte spilling during injection. After the spacing is completed, the spiral rod 4 stops rotating, and the electrolyte injectors 30 are used to inject electrolyte into the lithium battery 51 respectively. After the injection is completed, the spiral rod 4 is controlled to rotate again to transport the injected lithium battery 51. During the transportation, the lithium battery 51 rotates. Under the action of centrifugal force, the infiltration of the electrolyte in the lithium battery 51 can be accelerated, and the infiltration efficiency of the pole piece in the lithium battery 51 is improved. When the injected lithium battery 51 is transported out, the electrolyte injectors 30 are evenly spaced and moved upward to be reset.

[0032] The offset feeding assembly also includes a motor 6 connected to the base plate 1, the output end of the motor 6 is fixedly connected to the screw rod 4, an end rod 44 connected to the support plate 2 is arranged between the screw rod 4 and the auxiliary baffle 12, a plurality of rubber strips 26 corresponding to the lithium batteries 51 are evenly arranged on the auxiliary baffle 12, a plurality of elastic air bags 27 are evenly arranged on the rubber strips 26, and a connecting plate 3 fixedly connected to the support plate 2 is arranged at the end of the screw rod 4.

[0033] like Figure 1 and 2As shown in 11 and 13, the motor 6 is working, and the output end of the motor 6 drives the screw rod 4 to rotate. Since the two ends of the screw rod 4 are in an outward spiral shape, when the lithium battery 51 is discharged from the storage barrel 7 to contact the outward end surface of the screw rod 4, and since the spiral groove on the screw rod 4 is in an equidistant spiral shape, the screw rod 4 cooperates with the auxiliary baffle 12 to limit the lithium battery 51 along the axial direction of the screw rod 4 during rotation, and since the spiral groove on the screw rod 4 is in an equidistant spiral, the lithium battery 51 can be evenly arranged in the spiral groove of the screw rod 4, and is limited by the screw rod 4 and the auxiliary baffle 12, the lithium battery 51 is placed stably, and is not displaced or swung when the screw rod 4 stops, and when the lithium battery 51 moves along the axial direction of the screw rod 4 During the process, the other side of the lithium battery 51 contacts the auxiliary baffle 12. Since the auxiliary baffle 12 is evenly provided with rubber strips 26, the elastic airbags 27 on the rubber strips 26 can be deformed, thereby increasing the contact area with the lithium battery 51 and improving the friction with the lithium battery 51. The end surface rod 44 on the support plate 2 contacts the bottom of the lithium battery 51. Since the end surface rod 44 is a semi-arc surface, a linear contact with the lithium battery 51 is formed, which reduces the contact area and reduces the friction with the lithium battery 51. It can effectively ensure that the lithium battery 51 rotates under the action of the auxiliary baffle 12. Under the action of centrifugal force, the infiltration of the electrolyte in the lithium battery 51 can be accelerated, and the infiltration efficiency of the pole piece in the lithium battery 51 can be improved. The connecting plate 3 plays a role in carrying the lithium battery 51 transported out.

[0034] The discharging assembly also includes a turntable 15 fixedly connected to the output end of the motor 6, a protrusion 16 is provided on the edge side of the turntable 15, a discharge hole 18 is opened at one end of the storage barrel 7, a bracket 22 fixedly connected to the storage barrel 7 is provided opposite to the discharge hole 18, a slide plate 24 is slidably connected to the bracket 22, a first sliding pin 19 corresponding to the protrusion 16 is provided at one end of the slide plate 24, a retaining ring 20 is provided on the first sliding pin 19, a spring 21 sleeved and connected to the first sliding pin 19 is provided between the retaining ring 20 and the bracket 22, fixed columns 23 are respectively fixedly connected at both ends of the slide plate 24, one end of the fixed column 23 is fixedly connected to the hoop plate 25, a fixing frame 9 fixedly connected to the storage barrel 7 is provided at one end of the fixing plate 5, and an open barrel 8 is provided at the upper end of the storage barrel 7.

[0035] like Figure 1-4As shown, when the motor 6 rotates, it can drive the turntable 15 to rotate. During the rotation of the turntable 15, the protrusion 16 is driven to rotate in a circle. Since the turntable 15 and the spiral rod 4 are coaxially fixedly connected, when the protrusion 16 contacts and squeezes the first sliding pin 19 once, the spiral rod 4 rotates one circle, which can ensure that a lithium battery 51 is discharged from the storage barrel 7. The spiral rod 4 rotates one circle to transport the lithium battery 51 to the next spiral groove. When the protrusion 16 squeezes the first sliding pin 19, the first sliding pin 19 drives the slide plate 24 to slide along the bracket 22. The slide plate 24 is respectively fixed to the bracket 22 through the fixed column 23 drives the hoop plate 25 to move, and the hoop plate 25 is used to push the lithium battery 51 at the bottom of the storage barrel 7 out of the discharge hole 18 until it is squeezed and contacted with one end of the spiral rod 4. When the first sliding pin 19 moves, the spring 21 is compressed. When the protrusion 16 and the first sliding pin 19 are not squeezed, under the action of the spring 21, the first sliding pin 19 indirectly drives the hoop plate 25 to reset, so that another lithium battery 51 is discharged from the discharge hole 18. The fixing frame 9 supports and fixes the storage barrel 7, and the open barrel 8 is used to facilitate the placement of the lithium battery 51 into the storage barrel 7.

[0036] The variable pitch injection structure also includes a first spur gear 17 fixedly connected to the output end of the motor 6, the first spur gear 17 is meshed with a second spur gear 28, the second spur gear 28 is fixedly connected to a rotating rod 31, one end of the rotating rod 31 is fixedly connected to an inner groove rod 38, and a closed-loop inner slide groove is provided on the inner groove rod 38, one end of the auxiliary baffle 12 is fixedly connected to a limiting plate 39, a limiting groove 13 is provided on the limiting plate 39, a fixed rod 41 is slidably connected in the limiting groove 13, the lower end of the fixed rod 41 is provided with a second pin 40 meshing with the inner slide groove on the inner groove rod 38, and the upper end of the fixed rod 41 is fixedly connected to a fixed shaft block 42.

[0037] like Figure 2 and 5As shown in 6 and 10, the motor 6 drives the first spur gear 17 to rotate, the first spur gear 17 drives the second spur gear 28 to rotate, the second spur gear 28 drives the rotating rod 31 to rotate, and the rotating rod 31 drives the inner groove rod 38 to rotate. Since the inner groove rod 38 is provided with a closed-loop inner slide groove meshing with the second latch pin 40, when the inner groove rod 38 rotates, the second latch pin 40 is driven to move axially along the inner groove rod 38 under the action of the inner slide groove. When the second latch pin 40 moves to the outermost arc-shaped end of the inner slide groove, the inner groove rod 38 continues to rotate. Under the action of the closed-loop inner slide groove, the second latch pin 40 moves axially along the inner groove rod 38 in the opposite direction. There is no need to change the direction of the inner groove rod 38. The number of spirals of the spiral rod 4 and the number of spirals of the inner groove rod 38 are set differently. By adjusting the first spur gear 1 7 and the transmission ratio of the second spur gear 28 ensure that after the spiral rod 4 rotates several circles, the lithium batteries 51 are evenly distributed in the spiral groove of the spiral rod 4, the electrolyte injector 30 is evenly arranged above the lithium batteries 51, and the second latch 40 moves to the tail of one end of the inner groove rod 38. When the lithium batteries 51 in the spiral groove are injected, the spiral rod 4 and the inner groove rod 38 continue to rotate. During the rotation of the spiral rod 4, the lithium batteries 51 after the injection can be transported out. When the inner groove rod 38 rotates, under the action of the inner slide groove of the inner groove rod 38, the second latch 40 moves in the opposite direction along the axial direction of the inner groove rod 38. Therefore, when the second latch 40 moves, it can drive the fixed rod 41 to slide horizontally under the action of the limit groove 13 on the limit plate 39, and the fixed rod 41 drives the fixed shaft block 42 to reciprocate horizontally.

[0038] The upper end of the mounting plate 10 is fixedly connected to the liquid storage tank 11, and the lower end of the liquid storage tank 11 is provided with a fixed support block 33, and the two ends of the fixed support block 33 are respectively provided with a plurality of sliding blocks 50 slidably connected to the mounting plate 10, and the mounting plate 10 is provided with a limit slider 14 slidably connected to the inner wall of the sliding block 50, and the fixed support block 33 and the sliding block 50 are respectively provided with the electrolyte injector 30, and one end of the electrolyte injector 30 is provided with a second sliding pin 43 slidably connected to the inner wall of the fixed support block 33 and the sliding block 50, The electrolyte injector 30 on the slide block 50 is provided with a first latch 32 at one end, and a plurality of limit inclined grooves 48 corresponding to the first latch 32 are symmetrically provided at both ends of the mounting plate 10. The electrolyte injector 30 on the fixed support block 33 is fixedly connected with a first shaft block 45, and the electrolyte injectors 30 on the slide blocks 50 adjacent to the fixed support block 33 are respectively fixedly connected with second shaft blocks 46. The first shaft block 45 is provided with a slide rod 47 slidably connected with the second shaft block 46. The upper end of the electrolyte injector 30 is provided with There is a telescopic tube 29 connected to the liquid storage tank 11, and the lower end of the electrolyte injector 30 is provided with an injection tube 49 corresponding to the lithium battery 51. The fixed support block 33 and the sliding support block 50 are respectively provided with a rotating shaft rod 52, and the rotating shaft rod 52 of the sliding support block 50 at the outermost ends of both sides of the mounting plate 10 is respectively provided with a pair of parallel first end rods 34, and the rotating shaft rod 52 of the sliding support block 50 at the outermost ends of both sides of the mounting plate 10 is also respectively provided with a pair of parallel second end rods 35 that are rotatably connected to the first end rods 34. A cross rotating rod group is also provided on the mounting plate 10, and the cross rotating rod group includes a plurality of first connecting rods 36 and second connecting rods 37 that are cross-rotatably connected, and the middle parts of the first connecting rods 36 and the second connecting rods 37 respectively rotate around the rotating shaft rod 52 as the axis, one end of the first connecting rod 36 at the outermost end of the cross rotating rod group is rotationally connected to the first end rod 34, and one end of the second connecting rod 37 at the outermost end of the cross rotating rod group is rotationally connected to the second end rod 35, and the fixed shaft block 42 is fixedly connected to the rotating shaft rod 52 of the sliding block 50 at the outermost end on one side of the mounting plate 10.

[0039] like Figure 7 As shown, the liquid storage tank 11 is connected to the electrolyte injector 30 on the fixed support block 33 and the sliding support block 50 through the telescopic tube 29. The electrolyte is provided in the liquid storage tank 11, and the electrolyte injector 30 is used to discharge the electrolyte in the liquid storage tank 11. Figure 6 and 7As shown in FIG8 , when the fixed rod 41 drives the fixed shaft block 42 to move horizontally, the fixed shaft block 42 drives the rotating shaft rod 52 of the first end rod 34 and the second end rod 35 to move to one side. Since the rotating shaft rod 52 in the middle of the first connecting rod 36 and the second connecting rod 37 corresponding to the fixed support block 33 is fixed, during the movement of the first end rod 34 and the second end rod 35 to one end, the first end rod 34 and the second end rod 35 at the other end of the mounting plate 10 extend in opposite directions toward the other end, and then the first connecting rod 36 and the second connecting rod 37 between the first end rod 34 and the second end rod 35 are connected with the rotating shaft rod on the fixed support block 33. 52 is an axis that crosses and extends to both sides, thereby realizing that the rotating shaft rods 52 on the sliding blocks 50 on both sides of the fixed support block 33 are uniformly extended outward, and the rotating shaft rods 52 are equidistantly extended. The sliding blocks 50 at both ends of the fixed support block 33 are equidistantly extended to both ends under the action of the rotating shaft rods 52. The limiting slider 14 plays a limiting role on the sliding blocks 50. The sliding blocks 50 respectively drive the electrolyte injectors 30 to extend equidistantly, and when the electrolyte injectors 30 on the sliding blocks 50 move equidistantly to both sides, they respectively drive the first pins 32 to slide along the oblique slide grooves on the mounting plate 10, thereby realizing that the electrolyte injectors 30 The second slide pin 43 moves equidistantly to both sides and moves downward along the inner wall of the slide block 50 under the action of the second slide pin 43. At the same time, when the electrolyte injectors 30 on the slide blocks 50 at both ends of the fixed support block 33 move downward, the first shaft block 45, the second shaft block 46 and the slide rod 47 are connected to drive the electrolyte injectors 30 on the fixed support block 33 to move downward equidistantly, and the injection pipe 49 at the lower end of the electrolyte injector 30 is close to the injection port of the lithium battery 51 to prevent the electrolyte from spilling during injection. In addition, since the lithium batteries 51 are evenly distributed in the spiral groove of the spiral rod 4, and the electrolyte injectors 30 are evenly spaced and arranged on the lithium batteries 51, the electrolyte injectors 30 are evenly spaced and arranged on the lithium batteries 51. The inner groove rod 38 rotates, under the action of the inner groove of the inner groove rod 38, the second latch 40 moves in the opposite direction along the axial direction of the inner groove rod 38, and the second latch 40 drives the fixed shaft block 42 to move horizontally in the opposite direction through the fixed rod 41. During the above process, the electrolyte injector 30 on the sliding support block 50 is equidistantly moved closer to the position of the fixed support block 33 and at the same time, the electrolyte injector 30 is moved up for reset.

[0040] The working process of the present invention is as follows: when the present invention is in use, a lithium battery 51 is placed in the storage barrel 7, and the motor 6 can drive the turntable 15 to rotate when it rotates. During the rotation of the turntable 15, the protrusion 16 is driven to rotate in a circle. Since the turntable 15 and the spiral rod 4 are coaxially fixedly connected, when the protrusion 16 contacts and squeezes the first sliding pin 19 once, the spiral rod 4 rotates one circle, which can ensure that a lithium battery 51 is discharged from the storage barrel 7. The spiral rod 4 rotates one circle to transport the lithium battery 51 to the next spiral groove. When the protrusion 16 squeezes the first sliding pin 19, the first sliding pin 19 drives the slide plate 24 along the bracket. When the first sliding pin 19 moves, the spring 21 is compressed. When the projection 16 and the first sliding pin 19 are not pressed, the sliding pin indirectly drives the hoop plate 25 to reset under the action of the spring 21, so that another lithium battery 51 is discharged from the discharge hole 18, and the lithium battery 51 in the storage barrel 7 is discharged to contact with the spiral rod 4.

[0041] At the same time, the output end of the motor 6 drives the screw rod 4 to rotate. Since the two ends of the screw rod 4 are in an outward spiral shape, when the lithium battery 51 is discharged from the storage barrel 7 to contact the outward end surface of the screw rod 4, and since the spiral groove on the screw rod 4 is in an equidistant spiral shape, the screw rod 4 cooperates with the auxiliary baffle 12 to limit the lithium battery 51 along the axial direction of the screw rod 4 during rotation. Since the spiral groove on the screw rod 4 is in an equidistant spiral, the lithium battery 51 can be evenly arranged in the spiral groove of the screw rod 4, and limited by the screw rod 4 and the auxiliary baffle 12, the lithium battery 51 is placed stably and is not displaced or swung when the screw rod 4 stops. When the lithium battery 51 moves along the axis of the screw rod 4 During the movement, the other side of the lithium battery 51 contacts the auxiliary baffle 12. Since the auxiliary baffle 12 is evenly provided with rubber strips 26, the elastic airbags 27 on the rubber strips 26 can be deformed, thereby increasing the contact area with the lithium battery 51 and improving the friction with the lithium battery 51. The end face rod 44 on the support plate 2 contacts the bottom of the lithium battery 51. Since the end face rod 44 is a semi-arc surface, a linear contact with the lithium battery 51 is formed, which reduces the contact area and the friction with the lithium battery 51. It can effectively ensure that the lithium battery 51 rotates under the action of the auxiliary baffle 12. Under the action of centrifugal force, the infiltration of the electrolyte in the lithium battery 51 can be accelerated, and the infiltration efficiency of the pole piece in the lithium battery 51 can be improved.

[0042] The motor 6 drives the first spur gear 17 to rotate, the first spur gear 17 drives the second spur gear 28 to rotate, the second spur gear 28 drives the rotating rod 31 to rotate, and the rotating rod 31 drives the inner groove rod 38 to rotate. Since the inner groove rod 38 is provided with a closed-loop inner slide groove that meshes with the second latch pin 40, when the inner groove rod 38 rotates, the second latch pin 40 is driven to move axially along the inner groove rod 38 under the action of the inner slide groove. When the second latch pin 40 moves to one arc-shaped end of the inner slide groove, the inner groove rod 38 continues to rotate, and the second latch pin 40 moves axially along the inner groove rod 38 in the opposite direction. There is no need to change the direction of the inner groove rod 38. The number of spirals of the spiral rod 4 and the number of spirals of the inner groove rod 38 are set differently. By adjusting the first spur gear 1 7 and the transmission ratio of the second spur gear 28 ensure that after the spiral rod 4 rotates several circles, the lithium batteries 51 are evenly distributed in the spiral groove of the spiral rod 4, and the second latch 40 moves to the tail of one end of the inner groove rod 38. When the lithium batteries 51 in the spiral groove are injected, the spiral rod 4 and the inner groove rod 38 continue to rotate. During the rotation of the spiral rod 4, the lithium batteries 51 after the injection can be transported out. When the inner groove rod 38 rotates, under the action of the inner slide groove of the inner groove rod 38, the second latch 40 moves in the opposite direction along the axial direction of the inner groove rod 38. Therefore, when the second latch 40 moves, it can drive the fixed rod 41 to slide horizontally under the action of the limit groove 13 on the limit plate 39, and the fixed rod 41 drives the fixed shaft block 42 to reciprocate horizontally.

[0043] When the fixed rod 41 drives the fixed shaft block 42 to move horizontally, the fixed shaft block 42 drives the rotating shaft rod 52 of the first end rod 34 and the second end rod 35 to move to one side. Since the rotating shaft rod 52 in the middle of the first connecting rod 36 and the second connecting rod 37 corresponding to the fixing block 33 is fixed, during the movement of the first end rod 34 and the second end rod 35 to one end, the first end rod 34 and the second end rod 35 at the other end of the mounting plate 10 extend in the opposite direction toward the other end, so that the first connecting rod 36 and the second connecting rod 37 between the first end rod 34 and the second end rod 35 are connected to the fixing block 33. The rotating shaft rod 52 is an axis that crosses and extends to both sides, thereby realizing that the rotating shaft rods 52 on both sides of the rotating shaft rod 52 on the fixed support block 33 extend uniformly outward, and the rotating shaft rods 52 extend equidistantly. The sliding blocks 50 at both ends of the fixed support block 33 extend equidistantly to both ends under the action of the rotating shaft rod 52. The sliding blocks 50 drive the electrolyte injector 30 to extend equidistantly, and when the electrolyte injector 30 on the sliding block 50 moves equidistantly to both sides, it drives the first latch 32 to slide along the oblique slide groove on the mounting plate 10, thereby realizing that the electrolyte injector 30 moves equidistantly to both sides. The second sliding pin 43 moves downward along the inner wall of the sliding support block 50. At the same time, when the electrolyte injectors 30 on the sliding support blocks 50 at both ends of the fixed support block 33 move downward, the first shaft block 45, the second shaft block 46 and the sliding support rod 47 are connected to drive the electrolyte injectors 30 on the fixed support block 33 to move downward at an equal distance, and the injection tube 49 at the lower end of the electrolyte is close to the injection port of the battery to avoid the electrolyte from spilling during injection. In addition, since the lithium batteries 51 are evenly distributed in the spiral groove of the spiral rod 4, and the electrolyte injectors 30 are evenly spaced above the lithium batteries 51, the electrolyte injectors 30 are avoided. To avoid the occurrence of misalignment with the electrolyte injector 30, and when the injection is completed, the spiral rod 4 is controlled to rotate again to transport the injected lithium battery 51. When the inner groove rod 38 rotates, under the action of the inner slide groove of the inner groove rod 38, the second pin 40 moves in the opposite direction along the axial direction of the inner groove rod 38, and the second pin 40 drives the fixed shaft block 42 to perform horizontal reverse reciprocating movement through the fixed rod 41. Simultaneously with the above process, the electrolyte injector 30 on the sliding block 50 is equidistantly moved closer to the position of the fixed support block 33 and at the same time, the electrolyte injector 30 moves up for reset.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery liquid injection device, comprising a base plate (1), one end of the base plate (1) being fixedly connected to a support plate (2), and an upper end of the base plate (1) being fixedly connected to a fixing plate (5), characterized in that: The support plate (2) is provided with a dislocation discharge structure, the dislocation discharge structure comprising a dislocation feeding assembly and a discharge assembly matched with the dislocation feeding assembly, the dislocation feeding assembly comprising a screw rod (4) rotatably connected to the fixed plate (5), one end of the screw rod (4) is provided with an auxiliary baffle (12) connected to the support plate (2), a lithium battery (51) is provided between the auxiliary baffle (12) and the screw rod (4) and moves along the axial direction of the screw rod (4) while rotating, a storage barrel (7) is provided at one end of the fixed plate (5), a plurality of the lithium batteries (51) are provided in the storage barrel (7), the discharge assembly comprises a hoop plate (25) corresponding to the lithium batteries (51) in the storage barrel (7), the storage barrel (7) One end is fixedly connected to a mounting plate (10), the mounting plate (10) being provided with a variable distance injection structure cooperating with the dislocation discharge structure, the variable distance injection structure comprising a plurality of electrolyte injectors (30) which can be adjusted at equal intervals and move up and down synchronously, the dislocation feed assembly further comprising a motor (6) connected to the bottom plate (1), the output end of the motor (6) being fixedly connected to the screw rod (4), an end face rod (44) connected to the support plate (2) being provided between the screw rod (4) and the auxiliary baffle (12), a plurality of rubber strips (26) corresponding to the lithium batteries (51) being evenly provided on the auxiliary baffle (12), a plurality of elastic air bags (27) being evenly provided on the rubber strips (26), the screw rod ( 4) a connecting plate (3) fixedly connected to the support plate (2) is provided at the end, the discharge assembly further comprises a turntable (15) fixedly connected to the output end of the motor (6), a protrusion (16) is provided on the edge side of the turntable (15), a discharge hole (18) is provided at one end of the storage barrel (7), a bracket (22) fixedly connected to the storage barrel (7) is provided opposite to the discharge hole (18), a slide plate (24) is slidably connected to the bracket (22), a first sliding pin (19) corresponding to the protrusion (16) is provided at one end of the slide plate (24), a retaining ring (20) is provided on the first sliding pin (19), a spring (21) sleeved and connected to the first sliding pin (19) is provided between the retaining ring (20) and the bracket (22), the The two ends of the slide plate (24) are respectively fixedly connected to the fixing columns (23), one end of the fixing column (23) is fixedly connected to the hoop plate (25), one end of the fixing plate (5) is provided with a fixing frame (9) fixedly connected to the storage barrel (7), and the upper end of the storage barrel (7) is provided with an open barrel (8). When the motor (6) rotates, it can drive the turntable (15) to rotate, and the turntable (15) drives the protrusion (16) to rotate in a circle during the rotation process. Since the turntable (15) and the spiral rod (4) are coaxially fixedly connected, when the protrusion (16) squeezes the first sliding pin (19), the first sliding pin (19) drives the slide plate (24) to slide along the bracket (22), and the slide plate (24) drives the hoop plate (25) to move through the fixing column (23).The hoop plate (25) is used to push the lithium battery (51) at the bottom of the storage barrel (7) out of the discharge hole (18) until it is pressed and contacted with one end of the spiral rod (4). Therefore, when the protrusion (16) contacts and presses the first sliding pin (19) once, the spiral rod (4) rotates one circle, which can ensure that one lithium battery (51) is discharged from the storage barrel (7). The spiral rod (4) is evenly and equidistantly provided with a plurality of circular spiral grooves. The lithium battery is discharged from the storage barrel (7) until it contacts the spiral groove. Due to the pressing of the auxiliary baffle (12), the spiral rod (4) drives the lithium battery (51) to move along the axial direction of the spiral rod (4) during the rotation process. The spiral rod (4) rotates one circle to transport the lithium battery (51) to the next spiral groove.

2. A lithium battery injection device according to claim 1, characterized in that: The variable pitch injection structure further comprises a first spur gear (17) fixedly connected to the output end of the motor (6), the first spur gear (17) meshing with a second spur gear (28), the second spur gear (28) fixedly connected to a rotating rod (31), one end of the rotating rod (31) fixedly connected to an inner groove rod (38), the inner groove rod (38) being provided with a closed-loop inner slide groove, one end of the auxiliary baffle (12) fixedly connected to a limit plate (39), the limit plate (39) being provided with a limit groove (13), a fixed rod (41) being slidably connected in the limit groove (13), a second latch (40) meshing with the inner slide groove on the inner groove rod (38) being provided at the lower end of the fixed rod (41), and a fixed shaft block (42) being fixedly connected to the upper end of the fixed rod (41).

3. A lithium battery injection device according to claim 2, characterized in that: The upper end of the mounting plate (10) is fixedly connected to a liquid storage tank (11), the lower end of the liquid storage tank (11) is provided with a fixed support block (33), both ends of the fixed support block (33) are respectively provided with a plurality of sliding blocks (50) slidably connected to the mounting plate (10), the mounting plate (10) is provided with a limit slider (14) slidably connected to the inner wall of the sliding block (50), the fixed support block (33) and the sliding block (50) are respectively provided with the electrolyte injector (30), and the electrolyte injector (30) is respectively provided with a second sliding pin (4) slidably connected to the inner wall of the fixed support block (33) and the sliding block (50). 3), a first latch (32) is provided at one end of the electrolyte injector (30) on the slide block (50), a plurality of limit inclined grooves (48) corresponding to the first latch (32) are symmetrically provided at both ends of the mounting plate (10), a first shaft block (45) is fixedly connected to the electrolyte injector (30) on the fixed support block (33), a second shaft block (46) is fixedly connected to the electrolyte injector (30) on the slide block (50) adjacent to the fixed support block (33), a slide rod (47) slidably connected to the second shaft block (46) is provided on the first shaft block (45), and the electrolyte injector (30) is fixedly connected to the second shaft block (46). The end of the mounting plate (10) is provided with a telescopic tube (29) connected to the liquid storage tank (11); the lower end of the electrolyte injector (30) is provided with a liquid injection tube (49) corresponding to the lithium battery (51); the fixed support block (33) and the sliding support block (50) are respectively provided with a rotating shaft rod (52); the rotating shaft rod (52) of the sliding support block (50) at the outermost ends on both sides of the mounting plate (10) is respectively provided with a pair of parallel first end rods (34); the rotating shaft rod (52) of the sliding support block (50) at the outermost ends on both sides of the mounting plate (10) is also respectively provided with a pair of parallel second end rods (35) which are rotatably connected to the first end rods (34); The mounting plate (10) is also provided with a cross-rotating rod group, the cross-rotating rod group includes a plurality of first connecting rods (36) and second connecting rods (37) which are cross-rotatingly connected, and the middle parts of the first connecting rods (36) and the second connecting rods (37) are respectively rotated around the rotating shaft rod (52) as the axis, one end of the outermost first connecting rod (36) on both sides of the cross-rotating rod group is rotationally connected to the first end rod (34), and one end of the outermost second connecting rod (37) on both sides of the cross-rotating rod group is rotationally connected to the second end rod (35), and the rotating shaft rod (52) of the outermost sliding support block (50) on one side of the mounting plate (10) is fixedly connected to the fixed shaft block (42).

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