Atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries

Abstract

The present invention relates to the technical field of sintering furnaces, and specifically to an atmosphere sintering furnace for hot processing of positive electrode materials of lithium-ion batteries, comprising: a sintering furnace body, on which a heat-insulating box that can be covered is arranged; two groups of inclined plates are arranged, and the inclined plates are connected to a power component arranged in the heat-insulating box; a first limit plate is installed in the heat-insulating box, and a guide groove is arranged on the first limit plate, and the guide groove and a first interlocking shaft connected to the power component are rollingly matched, so that the two groups of inclined plates can move closer to or away from each other; a blocking structure is connected to the inclined plate, and the blocking structure can change the blocking state of the strip through groove arranged on the inclined plate to turn over the material and improve the sintering effect.

Description

Technical Field

[0001] The invention relates to the technical field of sintering furnaces, in particular to an atmosphere sintering furnace for thermal processing of positive electrode materials of lithium ion batteries. Background Art

[0002] The lithium battery material sintering furnace is a lightweight continuous industrial kiln, which is widely used in the rapid sintering of ternary positive electrode materials, chemical powders, ceramic substrates and other products. It has the advantages of low energy consumption, short sintering cycle, good furnace temperature uniformity and low labor intensity.

[0003] During specific use, the lithium battery material needs to be placed in a sintering furnace and fired at the high temperature in the sintering furnace, which can make the crystals in the positive electrode material denser and form a more regular crystal structure, thereby improving the energy density and power density of the battery, while enhancing the cycle life and stability of the battery.

[0004] In actual production, it is found that due to the accumulation of lithium battery materials in the sintering furnace, the metal components in the lithium battery materials are heated unevenly inside and outside. The temperature outside is significantly higher than that inside, which causes uneven sintering of the inside and outside of the lithium battery metal materials, affecting the densification effect and mechanical properties of the metal crystals. Summary of the invention

[0005] The object of the present invention is to provide an atmosphere sintering furnace for thermal processing of lithium ion battery positive electrode materials to solve the problems raised in the above background technology.

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

[0007] Atmosphere sintering furnace for thermal processing of lithium-ion battery cathode materials, including:

[0008] A sintering furnace body, wherein a heat-insulating box capable of being covered is provided on the sintering furnace body;

[0009] Two groups of inclined plates are provided, and the inclined plates are connected to a power assembly provided in the heat preservation box;

[0010] A first limit plate is installed in the heat preservation box, and a guide groove is provided on the first limit plate. The guide groove is in rolling cooperation with the first engaging shaft connected to the power assembly, so that the two groups of inclined plates can move closer to or away from each other;

[0011] A blocking structure is connected to the inclined plate, and the blocking structure can change the blocking state of the strip-shaped through groove arranged on the inclined plate.

[0012] As a further solution of the present invention: the power assembly includes a cylinder fixedly mounted on the heat preservation box, and the action end of the cylinder is detachably connected to a connecting frame arranged in the heat preservation box;

[0013] The connecting frame is provided with a transverse rod connected to the inclined plate, two groups of the transverse rods are connected through an energy storage structure, and the first engaging shaft is rotatably connected to the end of the transverse rod.

[0014] As a further solution of the present invention: the energy storage structure comprises a follower sleeve fixedly connected to one group of the transverse rods and a follower shaft fixedly connected to another group of the transverse rods, and the follower sleeve is slidably sleeved on the follower shaft;

[0015] A first cylindrical spring is sleeved on the follower sleeve and the follower shaft, and ends of the first cylindrical spring are connected to the two groups of transverse rods.

[0016] As a further solution of the present invention: the guide groove includes a first vertical groove and a second vertical groove arranged on the first limiting plate, the two are coaxially arranged, and one end of the second vertical groove away from the first vertical groove is connected to a plurality of groups of "L"-shaped grooves;

[0017] The end of the "L"-shaped groove away from the second vertical groove is connected to a transverse groove, the transverse groove is connected to a third vertical groove parallel to the second vertical groove, and the third vertical groove is connected to an end of the first vertical groove toward the second vertical groove through a first inclined groove;

[0018] A one-way deflecting member is rotatably mounted on one end of the first inclined slot away from the third vertical slot.

[0019] As a further solution of the present invention: a plurality of groups of the "L"-shaped grooves are connected end to end, the "L"-shaped groove at the head end is connected to the second vertical groove, and the "L"-shaped groove at the tail end is connected to the transverse groove;

[0020] The "L"-shaped groove includes a guide groove and a stop groove which are vertically arranged.

[0021] As a further solution of the present invention: the inclined plate is rotatably connected to the transverse rod, and the inclined plate is connected to an abutment assembly provided on the transverse rod through a hinge rod;

[0022] The abutment assembly comprises a connecting plate fixedly connected to the transverse rod, a slide groove is arranged on the connecting plate, a sliding connection piece is slidably installed in the slide groove, a follower plate is installed on the sliding connection piece, and an abutment portion is arranged on the sliding connection piece, and the abutment portion is adapted to the abutment rod arranged on the heat preservation box body;

[0023] The abutment assembly also includes a bidirectional offset kit connecting the follower plate and the connecting plate.

[0024] As a further solution of the present invention: the bidirectional offset kit includes a retardation groove arranged along the length direction of the follower plate, a slider is arranged in the retardation groove, the slider is slidably connected to a transverse rod arranged in the retardation groove, a second cylindrical spring is sleeved on the transverse rod, one end of the second cylindrical spring is connected to the slider, and the other end is connected to the side wall of the retardation groove;

[0025] The bidirectional offset kit also includes a V-shaped protrusion arranged on the connecting plate, and the V-shaped protrusion is rollingly matched with a third engaging shaft rotatably mounted on the sliding block.

[0026] As a further solution of the present invention: the blocking structure comprises a blocking plate slidably mounted on the inclined plate, and the blocking plate is provided with a conducting groove adapted to the strip-shaped through groove;

[0027] The blocking structure further comprises a connecting plate fixedly connected to the blocking plate, and a second engaging shaft is rotatably mounted on the connecting plate;

[0028] The second limit plate detachably connected to the transverse rod is adapted to the second engaging shaft.

[0029] As a further solution of the present invention: a first arc groove and a second arc groove are provided on the second limit plate, the first arc groove is concentric with the second arc groove, and the circumferential radius of the first arc groove is smaller than the circumferential radius of the second arc groove;

[0030] The second inclined grooves arranged on the second limiting plate are respectively connected to the first arc grooves and the second arc grooves.

[0031] As a further solution of the present invention: the actuating end of the cylinder is connected to the connecting frame via a latch.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] By providing the power assembly and the first limit plate, when the cylinder drives the connecting frame to perform the lifting action, the first interlocking shaft can cooperate with the guide groove, so that the two groups of inclined plates can move away from each other after moving to a predetermined height, so that the positive electrode material of the lithium-ion battery located between the two groups of inclined plates is slowly thrown to the bottom of the heat preservation box, and the positive electrode material of the lithium-ion battery can be evenly contacted with the high-temperature gas in the heat preservation box to achieve a better heat exchange effect, ensure that the positive electrode material of the lithium-ion battery is heated evenly, and improve the sintering effect. The first interlocking shaft can periodically cooperate with the guide groove when reciprocating and lifting, and can drive the positive electrode material of the lithium-ion battery to perform multiple lifting and throwing actions, further improving the sintering effect.

[0034] By setting the abutment assembly, when the two groups of inclined plates move to the lower end of the stroke, the ends can be kept in a state of abutting each other, so that the positive electrode material of the lithium-ion battery at the bottom of the heat preservation box can be scooped up, and when the first engaging shaft moves to the "L"-shaped groove, the two groups of inclined plates move away from each other, and the inclined plates continue to deflect, and the movement speed of the two groups of inclined plates moving away from each other is greater than the deflection speed of the inclined plates, so that the ends of the two groups of inclined plates can be in a periodic opening state, so that the positive electrode material of the lithium-ion battery can be evenly separated from the two groups of inclined plates, so as to prevent the positive electrode material of the lithium-ion battery from being thrown too much at one time, resulting in uneven heating;

[0035] By setting up the blocking structure, when the two groups of inclined plates move away from each other, the conducting groove and the strip through groove partially overlap and the positive electrode material of the lithium-ion battery can be separated from the inclined plate through the strip through groove, so that in the actual throwing process, the positive electrode material of the lithium-ion battery can be thrown through the strip through groove and the abutment position of the two groups of inclined plates, further improving the sintering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The present invention is a schematic structural diagram of an embodiment of an atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries.

[0037] Figure 2 The present invention is a schematic structural diagram of an atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries, with the heat preservation box body being opened in one embodiment.

[0038] Figure 3 A schematic diagram of the internal structure of a heat preservation box in an embodiment of an atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries.

[0039] Figure 4 for Figure 3 A magnified view of the structure at center.

[0040] Figure 5 for Figure 3 Schematic diagram of the structure from another angle.

[0041] Figure 6 for Figure 5 A magnified view of the structure at point B.

[0042] Figure 7 A schematic structural diagram of a second limiting plate in an embodiment of an atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries.

[0043] Figure 8 An exploded view of the local structure of a blocking structure in an embodiment of an atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries.

[0044] Fig. 9A schematic diagram of the structure of an abutment assembly in an embodiment of an atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries.

[0045] Fig.10 A schematic diagram of the structure of a power component in an embodiment of an atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries.

[0046] In the figure: 1, sintering furnace body; 2, heat preservation box; 3, cylinder; 4, latch; 5, connecting frame; 6, transverse rod; 601, first interlocking shaft; 7, follower sleeve; 8, follower shaft; 9, first cylindrical spring; 10, first limit plate; 1001, first vertical groove; 1002, second vertical groove; 1003, guide groove; 1004, stop groove; 1005, transverse groove; 1006, third vertical groove; 1007, first inclined groove; 1008, one-way deflection member; 11, inclined plate; 1101, strip through groove ; 12. Sealing plate; 1201. Conducting groove; 13. Connecting plate; 1301. Second interlocking shaft; 14. Second limiting plate; 1401. First arc groove; 1402. Second arc groove; 1403. Second inclined groove; 15. Articulated rod; 16. Connecting plate; 1601. Slide groove; 17. Sliding connector; 1701. Abutment portion; 18. Abutment rod; 19. Follow-up plate; 1901. Delay groove; 20. Sliding block; 21. Third interlocking shaft; 22. Second columnar spring; 23. Transverse rod; 24. V-shaped protrusion. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0049] See also Figure 1-Figure 10In the embodiment of the present invention, the atmosphere sintering furnace for hot processing of lithium-ion battery positive electrode materials includes: a sintering furnace body 1, an inclined plate 11, a first limit plate 10 and a blocking structure, so that when the cylinder 3 drives the connecting frame 5 to perform a lifting action, the first interlocking shaft 601 can cooperate with the guide groove, so that the two groups of inclined plates 11 can move away from each other after moving to a predetermined height, so that the lithium-ion battery positive electrode material located between the two groups of inclined plates 11 is slowly thrown to the bottom of the insulation box 2, and the lithium-ion battery positive electrode material can be evenly contacted with the high-temperature gas in the insulation box 2 to achieve a better heat exchange effect, ensure that the lithium-ion battery positive electrode material is heated evenly, and improve the sintering effect, and the first interlocking shaft 601 can periodically cooperate with the guide groove when reciprocating and lifting, and can drive the lithium-ion battery positive electrode material to perform multiple lifting and throwing actions, further improving the sintering effect, as follows:

[0050] The sintering furnace body 1 is provided with a coverable heat preservation box 2. Specifically, the heat preservation box 2 is composed of an upper and a lower part, which are hinged to facilitate the removal of materials after sintering.

[0051] The inclined plate 11 is provided with two groups, and the inclined plate 11 is connected to the power assembly arranged in the heat preservation box body 2. The power assembly includes a cylinder 3 fixedly installed on the heat preservation box body 2, and the action end of the cylinder 3 is detachably connected to the connecting frame 5 arranged in the heat preservation box body 2. Specifically, the action end of the cylinder 3 is connected to the connecting frame 5 through the latch 4. When in use, when opening the heat preservation box body 2, it is necessary to first remove the latch 4. At this time, the cylinder 3 is in a state of being separated from the connecting frame 5, so that the upper cover of the heat preservation box body 2 can be opened. When closing, the heat preservation box body 2 is closed first, and then the latch 4 is reinserted. At this time, the cylinder 3 can be connected to the connecting frame 5, and when the cylinder 3 is actuated, the connecting frame 5 can be driven to actuate. Based on this, the heat preservation box body 2 can be opened and closed more conveniently;

[0052] The connecting frame 5 is provided with a transverse rod 6 connected to the inclined plate 11, two groups of the transverse rods 6 are connected by an energy storage structure, the first interlocking shaft 601 is rotatably connected to the end of the transverse rod 6, the energy storage structure includes a follower sleeve 7 fixedly connected to one group of the transverse rods 6 and a follower shaft 8 fixedly connected to the other transverse rod 6, the follower sleeve 7 is slidably sleeved with the follower shaft 8;

[0053] The follower sleeve 7 and the follower shaft 8 are sleeved with a first cylindrical spring 9, and the ends of the first cylindrical spring 9 are connected to the two groups of transverse rods 6. In the initial state, the first cylindrical spring 9 is in a compressed state, so that when the first engaging shaft 601 cooperates with the guide groove, the two inclined plates 11 can move closer to or away from each other, so that when the connecting frame 5 is raised or lowered, the material in the insulation box 2 can be scooped up and released, thereby improving the full contact between the material and the high-temperature air in the insulation box 2 and improving the sintering effect.

[0054] The first limit plate 10 is installed in the heat preservation box 2. The first limit plate 10 is provided with a guide groove, and the guide groove is in rolling cooperation with the first engaging shaft 601 connected to the power assembly, so that the two groups of inclined plates 11 can move closer to or away from each other;

[0055] The guide groove includes a first vertical groove 1001 and a second vertical groove 1002 provided on the first limiting plate 10, the two being coaxially arranged, and one end of the second vertical groove 1002 away from the first vertical groove 1001 is connected to a plurality of groups of "L"-shaped grooves;

[0056] The end of the "L"-shaped groove away from the second vertical groove 1002 is connected to a transverse groove 1005, and the transverse groove 1005 is connected to a third vertical groove 1006 parallel to the second vertical groove 1002, and the third vertical groove 1006 is connected to an end of the first vertical groove 1001 toward the second vertical groove 1002 through a first inclined groove 1007;

[0057] A one-way deflecting member 1008 is rotatably mounted on one end of the first inclined slot 1007 away from the third vertical slot 1006 .

[0058] In this embodiment, in the initial state, the first engaging shaft 601 is at one end of the first vertical groove 1001 away from the second vertical groove 1002. At this time, the opposite ends of the two groups of inclined plates 11 are in abutment state, and the positive electrode material of the lithium-ion battery is on the two groups of inclined plates 11. When the cylinder 3 drives the connecting frame 5 to move upward, the first engaging shaft 601 will move upward along the length direction of the first vertical groove 1001 and the second vertical groove 1002. In the initial state, the one-way deflection member 1008 is in a vertical state, so that when the first engaging shaft 601 abuts against the one-way deflection member 1008, the one-way deflection member 1008 abuts against the side wall of the first inclined groove 1007, thereby deflecting the first engaging shaft 601. The coupling shaft 601 has a guiding function, so that when moving from bottom to top, the first coupling shaft 601 can enter the second vertical groove 1002 under the guidance of the unidirectional deflection member 1008, and when the two groups of inclined plates 11 drive the lithium-ion battery positive electrode material to move to a predetermined position, the first coupling shaft 601 can cooperate with multiple groups of "L"-shaped grooves in sequence, so that in the process of the first cylindrical spring 9 releasing the elastic potential energy, the two inclined plates 11 vibrate and gradually move away from each other, and the lithium-ion battery positive electrode material between the two groups of inclined plates 11 is gradually separated from the inclined plates 11, so that the lithium-ion battery positive electrode material can fully contact with the high-temperature gas in the insulation box 2, thereby improving the sintering effect.

[0059] After the two groups of inclined plates 11 rise to the predetermined position, the first interlocking shaft 601 can enter the upper end of the third vertical groove 1006 through the transverse groove 1005. At this time, the two groups of inclined plates 11 are in a state of moving away from each other. Then the cylinder 3 drives the two groups of inclined plates 11 to move downward, and when the first interlocking shaft 601 moves to the lower end of the third vertical groove 1006, the first interlocking shaft 601 can move along the first inclined groove 1007, so that the two groups of inclined plates 11 can move closer to each other. At this time, the two groups of inclined plates 11 can shovel up the lithium-ion battery positive electrode material at the bottom of the heat preservation box 2 again, and when the first interlocking shaft 601 and the single When the one-way deflection member 1008 abuts against the one-way deflection member 1008, the one-way deflection member 1008 can be deflected, so that the first interlocking shaft 601 can enter the first vertical groove 1001, and after the first interlocking shaft 601 is separated from the one-way deflection member 1008, the one-way deflection member 1008 can automatically reset under the action of gravity, and when the two groups of inclined plates 11 rise again, the above steps can be repeated, and the lithium-ion battery positive electrode material can be driven to perform multiple lifting and throwing actions, thereby further improving the heat exchange effect between the lithium-ion battery positive electrode material and the high-temperature gas in the heat preservation box 2, so that the lithium-ion battery positive electrode material is heated evenly, and the sintering effect is further improved.

[0060] It is worth noting that an inclined surface is provided at the bottom of the insulation box 2, which can guide the positive electrode material of the lithium-ion battery to the middle of the bottom of the insulation box 2, so that the positive electrode material of the lithium-ion battery can be guided to the middle position of the bottom of the insulation box 2 after being scattered, so that when the two sets of inclined plates 11 cooperate, the positive electrode material of the lithium-ion battery can be scooped up.

[0061] Through the above arrangement, when the cylinder 3 drives the connecting frame 5 to perform the lifting action, the first interlocking shaft 601 can cooperate with the guide groove, so that the two groups of inclined plates 11 can move away from each other after moving to a predetermined height, so that the lithium-ion battery positive electrode material located between the two groups of inclined plates 11 is slowly thrown to the bottom of the insulation box 2, and the lithium-ion battery positive electrode material can be evenly contacted with the high-temperature gas in the insulation box 2 to achieve a better heat exchange effect, ensuring that the lithium-ion battery positive electrode material is heated evenly while improving the sintering effect, and the first interlocking shaft 601 can periodically cooperate with the guide groove when it is reciprocatingly lifted and lifted, and can drive the lithium-ion battery positive electrode material to perform multiple lifting and throwing actions, further improving the sintering effect.

[0062] See also Figure 4 , multiple groups of the "L"-shaped grooves are connected end to end, the "L"-shaped groove at the head end is connected to the second vertical groove 1002, and the "L"-shaped groove at the tail end is connected to the transverse groove 1005;

[0063] The “L”-shaped groove includes a guide groove 1003 and a stop groove 1004 which are vertically arranged.

[0064] When the first interlocking shaft 601 moves to the end of the second vertical groove 1002, the first cylindrical spring 9 can drive the first interlocking shaft 601 to move along the guide groove 1003 by releasing potential energy. At this time, the inclined plate 11 can be accelerated instantly, and the positive electrode material of the lithium-ion battery cannot move immediately with the inclined plate 11 due to inertia, that is, relative sliding will occur between the inclined plate 11 and the positive electrode material of the lithium-ion battery, and the positive electrode material of the lithium-ion battery can be separated from the inclined plate 11 when the inclined plate 11 moves.

[0065] Furthermore, since multiple groups of "L"-shaped grooves are provided, the inclined plate 11 can repeatedly move laterally and generate vibrations during the rising process, thereby ensuring that the lithium-ion battery positive electrode material on the inclined plate 11 can be fully separated from the inclined plate 11, preventing the lithium-ion battery positive electrode material from adhering to the inclined plate 11.

[0066] See also Figure 8-Figure 9 , the inclined plate 11 is rotatably connected to the transverse rod 6, and the inclined plate 11 is connected to the abutment assembly provided on the transverse rod 6 through a hinge rod 15;

[0067] The abutment assembly includes a connecting plate 16 fixedly connected to the transverse rod 6, a slide groove 1601 is provided on the connecting plate 16, a sliding connection member 17 is slidably installed in the slide groove 1601, a follower plate 19 is installed on the sliding connection member 17, and an abutment portion 1701 is provided on the sliding connection member 17, and the abutment portion 1701 is adapted to the abutment rod 18 provided on the heat preservation box body 2;

[0068] The abutment assembly further includes a bidirectional offset kit connecting the follower plate 19 and the connecting plate 16, the bidirectional offset kit including a hysteresis groove 1901 arranged along the length direction of the follower plate 19, a slider 20 is arranged in the hysteresis groove 1901, the slider 20 is slidably connected to a transverse rod 23 arranged in the hysteresis groove 1901, a second cylindrical spring 22 is sleeved on the transverse rod 23, one end of the second cylindrical spring 22 is connected to the slider 20, and the other end is connected to the side wall of the hysteresis groove 1901;

[0069] The bidirectional offset kit further includes a V-shaped protrusion 24 disposed on the connecting plate 16 , and the V-shaped protrusion 24 is rollingly engaged with a third engaging shaft 21 rotatably mounted on the sliding block 20 .

[0070] When the two groups of inclined plates 11 approach each other to scoop up the positive electrode materials of the lithium-ion battery, the inclined plates 11 can fit with the bottom of the heat preservation box 2, and at the same time, when the transverse rod 6 tilts toward the bottom of the heat preservation box 2, the inclined plates 11 can deflect while moving towards each other to achieve a better shoveling effect, ensuring that the positive electrode materials of the lithium-ion battery at the bottom of the heat preservation box 2 can be completely scooped up. At this time, the sliding connector 17 connected to the inclined plate 11 by the hinge rod 15 will move upward along the length direction of the slide groove 1601, and when the sliding connector 17 moves upward, the third interlocking shaft 2 1 can move upward along the V-shaped protrusion 24, so that the second cylindrical spring 22 can be further compressed, wherein a protrusion protruding toward the sliding connection member 17 is formed in the middle of the V-shaped protrusion 24, so that when the third embedded shaft 21 moves over the protrusion, the second cylindrical spring 22 can release elastic potential energy, and the third embedded shaft 21 actively moves upward. At this time, the two groups of inclined plates 11 just abut, and because the inclined plates 11 still have a tendency to deflect, in this state, the two groups of inclined plates 11 can have a more stable abutment state, thereby ensuring that the positive electrode material of the lithium-ion battery is scooped up.

[0071] When the first interlocking shaft 601 moves to the upper end of the second vertical groove 1002 and moves along the guide groove 1003, the two groups of inclined plates 11 can continue to deflect and keep the ends in abutment, and the movement speed of the two groups of inclined plates 11 away from each other is greater than the deflection speed of the inclined plates 11, so that when the first interlocking shaft 601 moves along the guide groove 1003 on the multiple groups of "L"-shaped grooves, the ends of the two groups of inclined plates 11 can be in a periodic opening state, so that the positive electrode material of the lithium-ion battery can be evenly separated from the two groups of inclined plates 11, so as to prevent the positive electrode material of the lithium-ion battery from being scattered too much at one time, resulting in uneven heating.

[0072] Furthermore, when the first interlocking shaft 601 moves to the last set of "L"-shaped grooves, the abutment rod 18 can abut against the abutment portion 1701, driving the inclined plate 11 to deflect in the opposite direction. At this time, the inclined plate 11 can be reset to a larger inclined state, thereby separating all the lithium-ion battery positive electrode materials on the two sets of inclined plates 11 from the inclined plates 11.

[0073] Through the above-mentioned arrangement, when the two groups of inclined plates 11 move to the lower end of the stroke, the ends can maintain a state of abutting each other, so that the lithium-ion battery positive electrode material at the bottom of the insulation box 2 can be scooped up, and when the first interlocking shaft 601 moves to the "L"-shaped groove, the two groups of inclined plates 11 move away from each other, and at the same time the inclined plates 11 continue to deflect, and the movement speed of the two groups of inclined plates 11 away from each other is greater than the deflection speed of the inclined plates 11, so that the ends of the two groups of inclined plates 11 can be in a periodic opening state, so that the lithium-ion battery positive electrode material can be evenly separated from the two groups of inclined plates 11, so as to prevent the lithium-ion battery positive electrode material from being scattered too much at one time, resulting in uneven heating.

[0074] See also Figure 6-Figure 8 , the blocking structure is connected to the inclined plate 11, and the blocking structure can change the blocking state and the open state of the strip-shaped through groove 1101 provided on the inclined plate 11;

[0075] The blocking structure comprises a blocking plate 12 slidably mounted on the inclined plate 11, and the blocking plate 12 is provided with a conducting groove 1201 adapted to the strip-shaped through groove 1101;

[0076] The blocking structure further includes a connecting plate 13 fixedly connected to the blocking plate 12, and a second engaging shaft 1301 is rotatably mounted on the connecting plate 13;

[0077] The second limit plate 14 detachably connected to the transverse rod 6 is adapted to the second engaging shaft 1301, and the second limit plate 14 is provided with a first arc groove 1401 and a second arc groove 1402, the first arc groove 1401 is concentric with the second arc groove 1402, and the circumferential radius of the first arc groove 1401 is smaller than the circumferential radius of the second arc groove 1402;

[0078] The second inclined groove 1403 disposed on the second limiting plate 14 is respectively connected to the first arc groove 1401 and the second arc groove 1402 .

[0079] Before the inclined plate 11 performs the scooping action, the second interlocking shaft 1301 is in the first arc groove 1401. At this time, the conducting groove 1201 on the sealing plate 12 is in a misaligned state with the strip through groove 1101, so that when the two groups of inclined plates 11 cooperate, the positive electrode material of the lithium-ion battery can be scooped up. When the two groups of inclined plates 11 move away from each other and deflect, the second interlocking shaft 1301 can move from the first arc groove 1401 to the second arc groove 1402 through the second inclined groove 1403, and the sealing plate 12 moves along the width direction of the inclined plate 11. At this time, the conducting groove 1201 partially overlaps with the strip through groove 1101, so that the positive electrode material of the lithium-ion battery can be separated from the inclined plate 11 through the strip through groove 1101, thereby achieving the effect of spreading the positive electrode material of the lithium-ion battery through multiple areas, further improving the sintering effect.

[0080] Through the above arrangement, when the two groups of inclined plates 11 move away from each other, the conducting groove 1201 partially overlaps with the strip through groove 1101 and enables the positive electrode material of the lithium-ion battery to be separated from the inclined plate 11 through the strip through groove 1101, so that in the actual spreading process, the positive electrode material of the lithium-ion battery can be spread through the strip through groove 1101 and the abutment position of the two groups of inclined plates 11, further improving the sintering effect.

[0081] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0082] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Atmosphere sintering furnace for thermal processing of positive electrode materials for lithium-ion batteries, characterized in that: include: A sintering furnace body, wherein a heat-insulating box capable of being covered is provided on the sintering furnace body; Inclined plates, wherein two groups of inclined plates are provided, and both groups of inclined plates are connected to a power assembly provided in the heat preservation box; A first limit plate, the first limit plate is installed in the heat preservation box, the first limit plate is provided with a guide groove, the guide groove is in rolling cooperation with a first interlocking shaft connected to the power assembly; the power assembly can drive the two groups of inclined plates to move closer to or away from each other through the cooperation of the first interlocking shaft and the guide groove; A blocking structure is connected to the inclined plate, and a strip through slot is provided on the inclined plate. The strip through slot has two states: blocked and open. The blocking structure can change the state of the strip through slot to switch between the open and blocked states.

2. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 1, characterized in that: The power assembly comprises a cylinder fixedly mounted on the heat preservation box, and the action end of the cylinder is detachably connected to a connecting frame arranged in the heat preservation box; The connecting frame is provided with a transverse rod connected to the inclined plate, two groups of the transverse rods are connected through an energy storage structure, and the first engaging shaft is rotatably connected to the end of the transverse rod.

3. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 2, characterized in that: The energy storage structure comprises a follower sleeve fixedly connected to one group of the transverse rods and a follower shaft fixedly connected to another group of the transverse rods, wherein the follower sleeve is slidably sleeved on the follower shaft; A first cylindrical spring is sleeved on the follower sleeve and the follower shaft, and ends of the first cylindrical spring are connected to the two groups of transverse rods.

4. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 1, characterized in that: The guide groove comprises a first vertical groove and a second vertical groove arranged on the first limiting plate, the two being coaxially arranged, and the second vertical groove is connected to a plurality of groups of "L"-shaped grooves at one end away from the first vertical groove; The "L"-shaped groove is connected to a transverse groove at one end away from the second vertical groove, and the transverse groove is connected to a third vertical groove parallel to the second vertical groove, and the third vertical groove is connected to one end of the first vertical groove toward the second vertical groove through a first inclined groove; A one-way deflecting member is rotatably mounted on one end of the first inclined slot away from the third vertical slot.

5. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 4, characterized in that: A plurality of groups of the "L"-shaped grooves are connected end to end, the "L"-shaped groove at the head end is connected to the second vertical groove, and the "L"-shaped groove at the tail end is connected to the transverse groove; The "L"-shaped groove includes a guide groove and a stop groove arranged vertically.

6. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 2, characterized in that: The inclined plate is rotatably connected to the transverse rod, and the inclined plate is connected to an abutment assembly arranged on the transverse rod through a hinge rod; The abutment assembly comprises a connecting plate fixedly connected to the transverse rod, a slide groove is arranged on the connecting plate, a sliding connection piece is slidably installed in the slide groove, a follower plate is installed on the sliding connection piece, and an abutment portion is arranged on the sliding connection piece, and the abutment portion is adapted to the abutment rod arranged on the heat preservation box body; The abutment assembly also includes a bidirectional offset kit connecting the follower plate and the connecting plate.

7. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 6, characterized in that: The bidirectional offset kit comprises a retardation groove arranged along the length direction of the follower plate, a slider is arranged in the retardation groove, the slider is slidably connected with a transverse rod arranged in the retardation groove, a second cylindrical spring is sleeved on the transverse rod, one end of the second cylindrical spring is connected with the slider, and the other end is connected with the side wall of the retardation groove; The bidirectional offset kit also includes a V-shaped protrusion arranged on the connecting plate, and the V-shaped protrusion is rollingly matched with a third engaging shaft rotatably mounted on the sliding block.

8. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 2, characterized in that: The blocking structure comprises a blocking plate slidably mounted on the inclined plate, and the blocking plate is provided with a conducting groove adapted to the strip-shaped through groove; The blocking structure further comprises a connecting plate fixedly connected to the blocking plate, and a second engaging shaft is rotatably mounted on the connecting plate; A second limiting plate detachably connected to the transverse rod is adapted to the second engaging shaft.

9. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 8, characterized in that: The second limiting plate is provided with a first arc groove and a second arc groove, the first arc groove is concentric with the second arc groove, and the circumferential radius of the first arc groove is smaller than the circumferential radius of the second arc groove; The second inclined grooves arranged on the second limiting plate are respectively connected to the first arc grooves and the second arc grooves.

10. The atmosphere sintering furnace for thermal processing of lithium-ion battery positive electrode materials according to claim 2, characterized in that: The action end of the cylinder is connected to the connecting frame through a latch.

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