An electric vehicle battery and manufacturing equipment and manufacturing process thereof

Abstract

The application relates to an electric vehicle battery, in particular to an electric vehicle battery and a manufacturing device and a manufacturing process thereof, the process comprising the following steps: step one: placing mixed electrode coating paste in a paste box; step two: passing an electrode belt needing to be coated through the upper sides of two coating belts; step three: adjusting the relative distance between the two coating belts and the electrode, and the two coating belts are circularly moved to coat the paste on the electrode belt; the electric vehicle battery uses two coating belts to coat the paste on the electrode belt; and the thickness of the paste coated on the electrode belt can be adjusted according to processing requirements.

Description

TECHNICAL FIELD

[0001] The application relates to an electric vehicle battery, in particular to an electric vehicle battery and a manufacturing device and manufacturing process thereof. BACKGROUND

[0002] The electric vehicle battery is a core component of an electric vehicle EV and directly affects the endurance, performance, cost and safety of the vehicle; in the preparation process of the electric vehicle battery, first, active substances such as ternary lithium, lithium iron phosphate, conductive agent carbon black and binder PVDF are mixed with a solvent NMP to form a slurry; then the slurry formed by mixing is applied on an electrode sheet copper foil or aluminum foil; due to different processing requirements, the slurry often needs to be applied to different thicknesses, and the existing device cannot adjust the thickness of the slurry applied on the electrode strip according to the processing requirements in the process of use. SUMMARY

[0003] The application aims to provide an electric vehicle battery and a manufacturing device and manufacturing process thereof, which can adjust the thickness of the slurry applied on the electrode strip according to the processing requirements.

[0004] The application achieves the above-mentioned purpose by the following technical scheme.

[0005] An electric vehicle battery manufacturing device comprises a slurry tank, two sliding seats are slidably connected to the side of the slurry tank, a telescopic mechanism I is fixedly connected to each of the two sliding seats, a telescopic mechanism II is fixedly connected to the telescopic end of each of the two telescopic mechanisms I, a coating support is fixedly connected to the telescopic end of each of the two telescopic mechanisms II, a coating belt that moves in a cycle is arranged on each of the two coating supports, and the two coating belts are arranged in a staggered manner.

[0006] The slurry tank is fixedly connected to a device support, a limiting roller is rotatably connected to each of the front and rear ends of the device support, and an electrode strip passes between the limiting roller and the two coating belts.

[0007] Two lead screws are rotatably connected to the slurry tank, a power mechanism I that drives the rotation of the lead screws is fixedly connected to the slurry tank, and the two sliding seats are threadedly connected to the two lead screws respectively.

[0008] Two drive rollers are rotatably connected to the coating support, a power mechanism II that drives the rotation of the drive rollers is fixedly connected to the coating support, two telescopic seats are slidably connected to the bottom of the coating support, a compression spring is fixedly connected between the telescopic seats and the coating support, and a lifting roller is rotatably connected between the two telescopic seats.

[0009] The stretching mechanism III is fixedly connected to the coating support, a swing motor is fixedly connected to the stretching end of the stretching mechanism III, an output shaft of the swing motor is fixedly connected with a swing support, a plurality of supporting rollers are rotatably connected to the swing support, and the coating belt is wrapped outside the plurality of supporting rollers, the two driving rollers and the lifting roller;

[0010] The bottom of the slurry tank is fixedly connected with a pushing cylinder, a feeding pipe is fixedly connected to the pushing cylinder, a rotating ring is rotatably connected to the pushing cylinder, a driving motor is fixedly connected to the pushing cylinder, a screw shaft is fixedly connected to the output shaft of the driving motor, and the screw shaft is rotatably connected to the rotating ring and located in the pushing cylinder through the rotating ring;

[0011] A plurality of stirring columns are rotatably connected to the screw shaft, a gear is fixedly connected to each stirring column, a gear ring is rotatably connected to the pushing cylinder, the plurality of gears are in meshing transmission with the gear ring, a driving power mechanism III for driving the gear ring to rotate is fixedly connected to the pushing cylinder, and a plurality of stirring impellers are fixedly connected to each stirring column;

[0012] A groove pulley I is fixedly connected to the screw shaft, two groove pulleys II are rotatably connected in the slurry tank, the groove pulley I and the two groove pulleys II are in transmission connection through a homogenizing belt, a plurality of convex edges are fixedly connected to the inner side of the homogenizing belt, and the convex edges can be inserted into grooves arranged on the groove pulley I and the groove pulley II;

[0013] An electric vehicle battery manufacturing process, which comprises the following steps:

[0014] Step one: placing the mixed electrode coating slurry in the slurry tank;

[0015] Step two: passing the electrode belt to be coated through the upper sides of the two coating belts;

[0016] Step three: adjusting the relative distance between the two coating belts and the electrode, and the two coating belts move in a cycle to coat the slurry on the electrode belt;

[0017] An electric vehicle battery, which uses two coating belts to coat the slurry on the electrode belt. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described in detail below in combination with the drawings and specific implementation methods.

[0019] Figure 1 is a schematic structural view of an electric vehicle battery manufacturing equipment of the application;

[0020] Figure 2 is a schematic internal structural view of an electric vehicle battery manufacturing equipment of the application;

[0021] Figure 3is the schematic diagram of the homogenizing belt structure of the present application;

[0022] Figure 4 is the schematic diagram of the slurry tank structure of the present application;

[0023] Figure 5 is the schematic diagram of the coating belt structure of the present application;

[0024] Figure 6 is the side view of the coating belt of the present application;

[0025] Figure 7 is the schematic diagram of the supporting roller structure of the present application;

[0026] Figure 8 is the schematic diagram of the driving roller structure of the present application;

[0027] Figure 9 is the schematic diagram of the swing bracket structure of the present application;

[0028] Figure 10 is the schematic diagram of the pushing cylinder structure of the present application;

[0029] Figure 11 is the schematic diagram of the screw shaft structure of the present application;

[0030] Figure 12 is the schematic diagram of the stirring column structure of the present application.

[0031] In the figure: device bracket 11; slurry tank 12; limiting roller 13; screw rod 14; sliding seat 21; telescopic mechanism I 22; telescopic mechanism II 23; coating bracket 24; driving roller 25; telescopic seat 26; lifting roller 27; telescopic mechanism III 31; swing motor 32; swing bracket 33; supporting roller 34; coating belt 41; pushing cylinder 51; feeding pipe 52; rotating ring 53; driving motor 54; screw shaft 55; stirring column 56; gear 57; stirring impeller 58; gear ring 59; grooved pulley I 61; grooved pulley II 62; homogenizing belt 63. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below in combination with the accompanying drawings.

[0033] As Figures 1 to 12 shown below, the structure and function of an electric vehicle battery manufacturing equipment will be described in detail.

[0034] An electric vehicle battery manufacturing device includes a slurry tank 12. Two sliding seats 21 are slidably connected to the side of the slurry tank 12. A telescopic mechanism I 22 is fixedly connected to each of the two sliding seats 21. A telescopic mechanism II 23 is fixedly connected to the telescopic end of each of the two telescopic mechanisms I 22. A coating bracket 24 is fixedly connected to the telescopic end of each of the two telescopic mechanisms II 23. A coating belt 41 that moves in a circular motion is provided on each of the two coating brackets 24. The two coating belts 41 are staggered.

[0035] When using, such as Figure 1 As shown, the electrode slurry is placed in the slurry tank 12, and the sliding seat 21 is pushed to slide on the side of the slurry tank 12. The sliding seat 21 drives the telescopic mechanism I 22 to move, the telescopic mechanism I 22 drives the telescopic mechanism II 23 to move, the telescopic mechanism II 23 drives the coating bracket 24 to move, and the coating bracket 24 drives the coating belt 41 to move, thereby adjusting the distance between the two coating belts 41.

[0036] Start the telescopic mechanism I22, which can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism I22 drives the telescopic mechanism II23 to move. The telescopic mechanism II23 drives the coating bracket 24 to move. The coating bracket 24 drives the coating belt 41 to move, thereby adjusting the relative distance between the coating belt 41 and the electrode belt, and thus adjusting the coating thickness.

[0037] Furthermore, the telescopic mechanism II 23 is activated. The telescopic mechanism II 23 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism II 23 drives the coating bracket 24 to move. The coating bracket 24 drives the coating belt 41 to move, thereby adjusting the width of the misalignment of the two coating belts 41, thereby adjusting the total length of the two coating belts 41 when they are in contact with the electrode belt, and thus adjusting the width of the coating on the electrode belt.

[0038] Furthermore, in order to facilitate the lateral movement of the sliding seat 21, the slurry tank 12 is fixedly connected to the device support 11. Both the front and rear ends of the device support 11 are rotatably connected to the limiting rollers 13. The electrode strip passes between the limiting rollers 13 and the two coating strips 41. The height of the electrode strip is limited by the two limiting rollers 13, so that the electrode strip can only pass between the limiting rollers 13 and the two coating strips 41.

[0039] Two lead screws 14 are rotatably connected to the slurry tank 12, and a power mechanism I for driving the lead screws 14 to rotate is fixedly connected to the slurry tank 12. Two sliding seats 21 are respectively threadedly connected to the two lead screws 14.

[0040] The power mechanism I is started, and the output shaft of the power mechanism I starts to rotate. The output shaft of the power mechanism I drives the screw rod 14 to rotate. When the screw rod 14 rotates, the sliding seat 21 is driven to move through the thread. The sliding seat 21 drives the telescopic mechanism I 22 to move. The telescopic mechanism I 22 drives the telescopic mechanism II 23 to move. The telescopic mechanism II 23 drives the coating bracket 24 to move. The coating bracket 24 drives the coating belt 41 to move, so as to adjust the mutual distance of the two coating belts 41.

[0041] Further, in order to make the slurry coated on the electrode belt uniform;

[0042] The coating bracket 24 is rotatably connected with two driving rollers 25. The coating bracket 24 is fixedly connected with a power mechanism II for driving the driving rollers 25 to rotate. The bottom of the coating bracket 24 is slidably connected with two telescopic seats 26. The telescopic seat 26 and the coating bracket 24 are fixedly connected with a compression spring. The two telescopic seats 26 are rotatably connected with a lifting roller 27.

[0043] The coating bracket 24 is fixedly connected with a telescopic mechanism III 31. The telescopic end of the telescopic mechanism III 31 is fixedly connected with a swing motor 32. The output shaft of the swing motor 32 is fixedly connected with a swing bracket 33. The swing bracket 33 is rotatably connected with a plurality of supporting rollers 34. The coating belt 41 is wrapped outside the plurality of supporting rollers 34, the two driving rollers 25 and the lifting roller 27.

[0044] The power mechanism II is started, and the output shaft of the power mechanism II starts to rotate. The output shaft of the power mechanism II drives the driving rollers 25 to rotate. When the driving rollers 25 rotate, the coating belt 41 is driven to move. The movement direction of the coating belt 41 is opposite to the movement direction of the electrode belt, that is, when the electrode belt continuously moves from one side to the other side, such as from left to right, the coating belt 41 is also continuously moved under the driving of the driving rollers 25, so that the coating belt 41 continuously moves from right to left. The relative movement between the coating belt 41 and the electrode belt is generated. The lower end of the coating belt 41 continuously contacts the slurry in the slurry tank 12, so that the coating belt 41 continuously drives the slurry to move and coat on the electrode belt.

[0045] Further, the telescopic mechanism Ⅲ 31 is started, which can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism Ⅲ 31 drives the swing motor 32 to move. The swing motor 32 drives the swing bracket 33 to move. The swing bracket 33 drives the coating belt 41 to move, thereby adjusting the height of the coating belt 41 on the upper side. At the same time, the swing motor 32 is started. The output shaft of the swing motor 32 drives the swing bracket 33 to move. The swing bracket 33 drives the plurality of supporting rollers 34 to move, so that the plurality of supporting rollers 34 are inclinedly arranged, thereby making the upper end of the coating belt 41 be inclinedly arranged. That is, if the electrode belt continuously moves from left to right, the right end of the coating belt 41 is higher than the left end of the coating belt 41, forming a slope, thereby realizing the effect of gradual coating, and controlling the thickness of the slurry coated on the electrode belt;

[0046] Further, in order to mix the slurry and continuously push the slurry into the slurry tank 12, the slurry in the slurry tank 12 is always kept at a horizontal height;

[0047] The bottom of the slurry tank 12 is fixedly connected with a pushing cylinder 51. The pushing cylinder 51 is fixedly connected with a feeding pipe 52. The pushing cylinder 51 is rotatably connected with a rotating ring 53. The pushing cylinder 51 is fixedly connected with a driving motor 54. The output shaft of the driving motor 54 is fixedly connected with a spiral shaft 55. The spiral shaft 55 is rotatably connected to the rotating ring 53. The spiral shaft 55 passes through the rotating ring 53 and is located in the pushing cylinder 51;

[0048] The slurry is put into the pushing cylinder 51 through the feeding pipe 52. The driving motor 54 is started. The output shaft of the driving motor 54 starts to rotate. The output shaft of the driving motor 54 drives the spiral shaft 55 to rotate. The spiral shaft 55 generates a transverse pushing force when rotating, which continuously pushes the slurry into the slurry tank 12;

[0049] Further, in order to continuously mix and stir the slurry in the pushing cylinder 51;

[0050] The spiral shaft 55 is rotatably connected with a plurality of stirring columns 56. Each stirring column 56 is fixedly connected with a gear 57. The pushing cylinder 51 is rotatably connected with a gear ring 59. The plurality of gears 57 are in meshing transmission with the gear ring 59. The pushing cylinder 51 is fixedly connected with a power mechanism Ⅲ for driving the gear ring 59 to rotate. Each stirring column 56 is fixedly connected with a plurality of stirring impellers 58;

[0051] The spiral shaft 55 rotates to drive the stirring column 56 to rotate, and the stirring column 56 drives the plurality of stirring impellers 58 thereon to rotate, thereby mixing and stirring the slurry in the pushing cylinder 51. Since the coating belt 41 continuously moves to continuously coat the slurry on the electrode belt, and the coating thickness and the coating width of the coating belt 41 are controlled, the descending speed of the slurry in the slurry tank 12 changes, and in order to ensure that the slurry in the slurry tank 12 is always at a stable height, the rotating speed of the output shaft of the driving motor 54 needs to be controlled, thereby controlling the rotating speed of the spiral shaft 55. At this time, in order to ensure the mixing effect, the power mechanism III is started, the output shaft of the power mechanism III starts to rotate, the output shaft of the power mechanism III drives the gear ring 59 to rotate, the gear ring 59 drives the plurality of gears 57 to rotate, the gears 57 drive the stirring column 56 to rotate, and the stirring column 56 drives the stirring impellers 58 to rotate, thereby speeding up or slowing down the rotation of the stirring impellers 58, and ensuring the mixing effect of the stirring impellers 58 on the slurry.

[0052] Further, since the slurry has a certain viscosity, and after the position of the coating belt 41 is adjusted, the position of the coating belt 41 is fixed, and the coating belt 41 continuously circulates to drive the slurry in the slurry tank 12 at the fixed position, which may cause the upper end of the slurry in the slurry tank 12 to be not horizontal. Therefore, the spiral shaft 55 is fixedly connected with a recessed pulley I 61, and the slurry tank 12 is rotatably connected with two recessed pulleys II 62. The recessed pulley I 61 and the two recessed pulleys II 62 are drivingly connected through a homogenizing belt 63. The inner side of the homogenizing belt 63 is fixedly connected with a plurality of ribs, which can be inserted into recesses arranged on the recessed pulley I 61 and the recessed pulley II 62.

[0053] Further, when the spiral shaft 55 rotates, the recessed pulley I 61 is driven to rotate, the homogenizing belt 63 is continuously driven to move, and the homogenizing belt 63 continuously drives the slurry in the slurry tank 12 to flow, so that the slurry in the slurry tank 12 is in a flowing state, the upper end of the slurry in the slurry tank 12 is in a horizontal state, and the coating belt 41 can contact a specified amount of slurry.

[0054] An electric vehicle battery manufacturing process, the process comprising the following steps:

[0055] Step one: place the mixed electrode coating slurry in the slurry tank 12; put the slurry into the pushing cylinder 51 through the inlet pipe 52, start the driving motor 54, the output shaft of the driving motor 54 starts to rotate, the output shaft of the driving motor 54 drives the spiral shaft 55 to rotate, and the spiral shaft 55 generates a horizontal pushing force when rotating to continuously push the slurry into the slurry tank 12;

[0056] Step two: pass the electrode strip to be coated through the upper side of the two coating strips 41; limit the height of the electrode strip by the two limiting rollers 13, so that the electrode strip can only pass between the limiting rollers 13 and the two coating strips 41;

[0057] Step three: adjust the relative distance between the two coating strips 41 and the electrode, and the two coating strips 41 move in a cycle to coat the slurry on the electrode strip;

[0058] An electric vehicle battery uses two coating strips 41 to coat the slurry on the electrode strip; the movement direction of the coating strip 41 is opposite to the movement direction of the electrode strip, that is, during the process of continuously moving the electrode strip from one side to the other side, such as from left to right, the coating strip 41 is also continuously moving under the drive of the driving roller 25, so that the coating strip 41 continuously moves from right to left, so that the relative movement between the coating strip 41 and the electrode strip is generated, the lower end of the coating strip 41 is in constant contact with the slurry in the slurry tank 12, and then the coating strip 41 continuously drives the slurry to move and coat on the electrode strip.

Claims

1. An electric vehicle battery manufacturing apparatus comprising a slurry tank (12) characterised in that: Two sliding seats (21) are slidably connected to the side of the slurry tank (12), two telescopic mechanisms I (22) are fixedly connected to the two sliding seats (21), two telescopic mechanisms II (23) are fixedly connected to the telescopic ends of the two telescopic mechanisms I (22), two smearing supports (24) are fixedly connected to the telescopic ends of the two telescopic mechanisms II (23), two circulating smearing belts (41) are arranged on the two smearing supports (24), and the two smearing belts (41) are arranged in a staggered mode; The slurry tank (12) is fixedly connected to the device support (11), the front end and the rear end of the device support (11) are both rotatably connected to limiting rollers (13), and an electrode belt passes through between the limiting rollers (13) and the two smearing belts (41). Two driving rollers (25) are rotatably connected to the smearing support (24), a power mechanism II for driving the driving rollers (25) to rotate is fixedly connected to the smearing support (24), two telescopic seats (26) are slidably connected to the bottom of the smearing support (24), compression springs are fixedly connected between the telescopic seats (26) and the smearing support (24), and a lifting roller (27) is rotatably connected between the two telescopic seats (26). The smearing support (24) is fixedly connected with a telescopic mechanism III (31), a swing motor (32) is fixedly connected to the telescopic end of the telescopic mechanism III (31), a swing support (33) is fixedly connected to the output shaft of the swing motor (32), a plurality of supporting rollers (34) are rotatably connected to the swing support (33), and the smearing belt (41) is wrapped outside the plurality of supporting rollers (34), the two driving rollers (25) and the lifting roller (27).

2. An electric vehicle battery manufacturing apparatus according to claim 1, wherein: Two lead screws (14) are rotatably connected to the slurry tank (12), and a power mechanism I for driving the lead screws (14) to rotate is fixedly connected to the slurry tank (12); the two sliding seats (21) are threadedly connected to the two lead screws (14) respectively.

3. The electric vehicle battery manufacturing apparatus of claim 1, wherein: A pushing cylinder (51) is fixedly connected to the bottom of the slurry tank (12), a feeding pipe (52) is fixedly connected to the pushing cylinder (51), a rotating ring (53) is rotatably connected to the pushing cylinder (51), a driving motor (54) is fixedly connected to the pushing cylinder (51), a helical shaft (55) is fixedly connected to the output shaft of the driving motor (54), and the helical shaft (55) is rotatably connected to the rotating ring (53) and located in the pushing cylinder (51) through the rotating ring (53).

4. An electric vehicle battery manufacturing apparatus according to claim 3, wherein: A plurality of stirring columns (56) are rotatably connected to the helical shaft (55), a gear (57) is fixedly connected to each stirring column (56), a gear ring (59) is rotatably connected to the pushing cylinder (51), the plurality of gears (57) are in meshing transmission with the gear ring (59), a power mechanism III for driving the gear ring (59) to rotate is fixedly connected to the pushing cylinder (51), and a plurality of stirring impellers (58) are fixedly connected to each stirring column (56).

5. An electric vehicle battery manufacturing apparatus as claimed in claim 3, wherein: The spiral shaft (55) is fixedly connected with a recess pulley I (61), two recess pulleys II (62) are rotatably connected in the slurry tank (12), the recess pulley I (61) and the two recess pulleys II (62) are drivingly connected through a homogenizing belt (63), the inner side of the homogenizing belt (63) is fixedly connected with a plurality of convex edges, and the convex edges can be inserted into recesses arranged on the recess pulley I (61) and the recess pulley II (62).

6. A process for using the electric vehicle battery manufacturing apparatus of claim 1, characterized by: The process comprises the following steps: Step one: the mixed electrode paste is placed in the slurry tank (12); Step two: the electrode belt to be coated is passed through the upper side of the two coating belts (41); Step three: adjust the relative distance between the two coating belts (41) and the electrode, and the two coating belts (41) circulate to coat the paste on the electrode belt.

7. An electric vehicle battery manufactured using the electric vehicle battery manufacturing apparatus of claim 1, characterized by: The electric vehicle battery uses two coating belts (41) to coat the paste on the electrode belt.

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