A battery module housing for new energy vehicles and its polishing process

Abstract

The present invention relates to the technical field of shell polishing equipment, and more specifically, to a battery module shell for new energy vehicles and its polishing process, which adopts a driving device and a clamping device on a working platform to complete the clamping and transportation of a fixed shell, and completes the polishing operation of the corners of the fixed shell through a polishing device. The battery module shell for new energy vehicles and its polishing process, after the dual-axis motor is started, can drive the fixed shell to move toward the direction of the polishing device by moving a slider, and during the movement, the two sets of placement tables move toward each other, and the fixed shell is fixed by an extrusion part, and during the polishing process, the stability of the corner position of the fixed shell is protected during polishing to avoid affecting the polishing accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of shell polishing equipment, and in particular to a battery module shell for new energy vehicles and a polishing process thereof. Background Art

[0002] The battery module shell for new energy vehicles is usually made of aluminum alloy or composite materials. It has the characteristics of lightweight, high strength, corrosion resistance and good sealing performance. The aluminum alloy shell is manufactured through extrusion and welding processes, while the composite shell uses advanced forming technology. The design of the shell not only protects the battery module from external impact, but also integrates a cooling system to maintain a stable battery temperature.

[0003] The patent with application number CN202020494914.9 discloses a new automatic workstation system for battery shell grinding, a product positioning fixture, a truss grinding equipment, and a product flipping equipment. The truss grinding equipment includes two parallel truss fixed frames and a movable truss. The truss fixed frame is provided with a track arranged along the length extension direction of the truss fixed frame. The movable truss is arranged perpendicular to the truss fixed frame. The two ends of the movable truss are respectively in sliding contact with the two truss fixed frames through the track. The movable truss is provided with a grinding head, and the grinding head moves along the length extension direction of the movable truss.

[0004] In the production process of battery module shells, for the sake of overall aesthetics and to reduce the sealing performance and overall strength of the shells, the burrs and uneven areas on the corners of the battery module shells are usually processed by grinding equipment after the battery module shells are welded. However, the traditional manual operation with belt grinders is simple and flexible to operate, but due to the thin and light nature of the shells, the lack of effective clamping can easily lead to difficulty in controlling the grinding angle, which in turn affects the grinding accuracy and consistency. On the other hand, although the automated grinding system is known for its high precision and high efficiency, its high cost, complex clamping and grinding device drive system, and the frequent debugging required to cope with various shell sizes have greatly increased the production cost and operation complexity.

[0005] In view of this, we propose a battery module shell and a polishing process thereof for new energy vehicles. Summary of the invention

[0006] The purpose of the present invention is to provide a battery module housing for new energy vehicles and a grinding process thereof to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, on the one hand, the present invention provides the following technical solutions:

[0008] A battery module shell polishing process for new energy vehicles, comprising the following steps:

[0009] S1. First, the operator adjusts the fixed position of a pair of positioning blocks in the clamping device according to the size of the fixed housing, and puts the fixed housing upside down in the groove on the surface of the positioning block;

[0010] S2, then, start the double-axis motor in the driving device to drive the rotating shafts at both ends to rotate, thereby driving the first screw rods on the left and right sides to rotate, and allowing the moving slider to move together with the fixed tooth plate;

[0011] S3. At this time, the moving slider drives the moving plate to move forward as a whole. When the docking gear contacts the plate surface tooth plate in the working platform, it rotates, driving the bidirectional screw rod to rotate, thereby allowing the positions of a pair of placement tables to move toward each other, thereby fixing the fixed shell through the extrusion part;

[0012] S4. When the movable plate moves to between a pair of grinding devices and is fixed, the movable slider will be freed from the restriction of the limit plug under the rotation of the first screw rod and continue to move forward;

[0013] S5. Subsequently, the fixed tooth plate will come into contact with the central gear during the movement of the movable slider, thereby driving the central gear to rotate;

[0014] S6. After the central gear rotates, it will drive the entire movable frame to move toward the fixed housing. When the grinding belt of the belt grinder contacts the corner of the fixed housing, the dual-axis motor is turned off;

[0015] S7, then, start the belt grinder, and control the T-beam to move up and down in the movable frame, so as to fully grind the corners of the fixed shell;

[0016] S8. After the corner grinding of the fixed shell is completed, the belt grinder is turned off, and the dual-axis motor is controlled to reverse. At this time, the moving slider moving backward will first restore the position of a pair of grinding devices, and then restore the position of the clamping device;

[0017] S9, then, the operator takes out the fixed housing with polished corners from the positioning block, and repeats the above operation to complete the polishing operation of the fixed housing in batches;

[0018] In the above steps, the driving device and the clamping device on the working platform are used to complete the clamping and transportation of the fixed shell, and the grinding device is used to complete the grinding operation of the corners of the fixed shell;

[0019] The working platform comprises a fixed plate and a plate surface tooth plate arranged at the center position of the top surface of the fixed plate;

[0020] The driving device includes a dual-axis motor, a rotating shaft arranged on the output shafts at both ends of the dual-axis motor, a first screw rod that rotates as the rotating shaft rotates, a moving slider that moves as the first screw rod rotates, and a fixed tooth plate arranged on the outer side wall of the moving slider;

[0021] The clamping device includes a moving plate, a docking gear arranged at the center of the moving plate, a pair of placement platforms that move with the rotation of the docking gear, a positioning block for determining the placement position of the fixed housing, a limiting plug block for limiting the position of the moving slider, and an extrusion portion fixed on the top surface of the positioning block;

[0022] The grinding device comprises a central gear, a moving frame which moves as the central gear rotates, a T-shaped beam which is slidably connected to the inside of the moving frame, and a belt grinder which is fixed to both ends of a crossbar of the T-shaped beam.

[0023] In the technical solution of the present invention, two parallel plate slide grooves are opened on the top surface of the fixed plate, the plate tooth plate is fixedly connected to the top surface of the fixed plate by bolts, a support rod is welded and fixed on the bottom surface of the fixed plate, and a jacket cover is clamped and fixed on the top surface of the fixed plate above the grinding area.

[0024] In the technical solution of the present invention, the dual-axis motor is fixedly connected to the top surface of the fixed plate by bolts, the rotating shaft is coaxially connected to the output shaft of the dual-axis motor, the movable slider is threadedly connected to the first screw rod, a limiting groove is provided on the inner wall of the movable slider, and a fixed tooth plate is fixedly connected to the outer wall of the movable slider by screws.

[0025] In the technical solution of the present invention, the front and rear ends of the first screw rod are respectively rotatably connected to the protrusions on the top surface of the fixed plate, the end of the rotating shaft is fixedly connected to the main bevel gear through a bayonet, and the end position of the first screw rod is fixedly connected to the secondary bevel gear through a bayonet, and the main bevel gear is meshed with the secondary bevel gear.

[0026] In the technical solution of the present invention, the movable plate is slidably connected to the top surface of the fixed plate, and the outer walls at the left and right ends of the movable plate are provided with plate wall sliding grooves for limiting the moving range of the movable slider, and a plate bottom pulley is fixedly connected to the bottom surface of the movable plate by screws, and the bottom surface of the plate bottom pulley is in conflict with the bottom groove wall of the plate surface sliding groove.

[0027] In the technical solution of the present invention, a bidirectional screw is clamped inside the docking gear, and the bidirectional screw is rotatably connected to the inside of the movable plate. The placement table is threadedly connected to the bidirectional screw, and the positioning block is fixedly connected to the top surface of the placement table by bolts. The limit plug is slidably connected to the groove of the rear end groove wall of the board wall slide groove, and a first pressure spring is welded on the inner side wall of the limit plug. The other end of the first pressure spring is fixedly connected to the groove wall of the rear end groove of the board wall slide groove.

[0028] In the technical solution of the present invention, the extrusion part includes a fixed bracket clamped on the top surface of the positioning block, a bending plate arranged on the outside of the fixed bracket, a plurality of limiting telescopic rods connected between the fixed bracket and the bending plate, and a second pressure spring sleeved on the outside of the limiting telescopic rod. The elastic force provided by the second pressure spring pushes the bending plate to move toward the direction of the grinding device.

[0029] In the technical solution of the present invention, the center gear is rotatably connected to the inside of the through groove opened on the top surface of the fixed plate, the center gear is meshed with the fixed tooth plate, and the front and rear ends of the movable frame are respectively provided with a second screw rod and a limiting slide rod, the second screw rod and the limiting slide rod are rotatably connected to the bottom of the fixed plate through the bracket at the end, the end of the second screw rod extends to the bottom of the center gear and the end position is sleeved on the rod end gear meshed with the center gear.

[0030] In the technical solution of the present invention, the protrusion on the rear side wall of the movable frame is threadedly connected to the second screw rod, the protrusion on the front side wall of the movable frame is slidably connected to the limiting slide rod, and a cylinder is fixedly connected to the inner bottom surface of the movable frame by bolts, and the telescopic rod at the end of the cylinder is clamped and fixed to the bottom of the T-beam.

[0031] On the other hand, the present invention also provides a battery module housing for a new energy vehicle, which is processed by the above-mentioned grinding process for the battery module housing for a new energy vehicle;

[0032] The fixed shell includes a module placement plate, two positioning plates vertically welded and fixed to the left and right ends of the module placement plate, two outer sleeve plates symmetrically welded and fixed to the outside of the positioning plate, and a reinforcing plate fixedly connected to the outer wall of the positioning plate by bolts.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The battery module shell for new energy vehicles and its grinding process, after the dual-axis motor is started, it can drive the fixed shell to move toward the direction of the grinding device by moving the slider, and in the process of movement, the two sets of placement tables move towards each other, and the fixed shell is fixed by the extrusion part, and in the process of grinding, the stability of the corner position of the fixed shell is protected during grinding to avoid affecting the grinding accuracy.

[0035] 2. The battery module shell and grinding process for new energy vehicles, after the position of the movable plate is fixed, the movable slider continues to move forward during the rotation of the dual-axis motor, and drives a pair of grinding devices to move to a suitable grinding position according to the size of the fixed shell, thereby reducing the investment in additional drive equipment and improving the flexibility of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a structural schematic diagram of the working platform in the present invention;

[0038] Figure 3 It is a schematic diagram of the structure of the driving device in the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the clamping device in the present invention;

[0040] Figure 5 For the present invention Figure 4 A magnified schematic diagram of part A;

[0041] Figure 6 It is a partial structural schematic diagram of the clamping device in the present invention;

[0042] Figure 7 It is a structural schematic diagram of the extrusion part in the present invention;

[0043] Figure 8 It is a structural schematic diagram of the grinding device in the present invention;

[0044] Fig. 9 It is a schematic cross-sectional view of a part of the structure of the grinding device of the present invention;

[0045] Fig.10 It is a structural schematic diagram of the fixed housing in the present invention;

[0046] Description of reference numerals:

[0047] 100, working platform; 110, fixed plate; 111, plate slide; 120, plate tooth plate; 130, support rod; 140, outer cover;

[0048] 200, driving device; 210, dual-axis motor; 220, rotating shaft; 230, first screw rod; 240, moving slider; 241, limiting groove; 250, fixed tooth plate; 260, main bevel gear; 270, auxiliary bevel gear;

[0049] 300, clamping device; 310, movable plate; 311, plate wall slide; 320, plate bottom pulley; 330, docking gear; 340, bidirectional screw rod; 350, placement table; 360, positioning block; 370, limit plug block; 380, first pressure spring; 390, extrusion part; 391, fixed bracket; 392, bending plate; 393, second pressure spring; 394, limit telescopic rod;

[0050] 400, grinding device; 410, central gear; 420, moving frame; 430, T-beam; 440, belt grinder; 450, second screw rod; 460, limit slide rod; 470, rod end gear; 480, cylinder;

[0051] 500, fixed shell; 510, module placement plate; 520, positioning plate; 530, outer cover plate; 540, reinforcement plate. DETAILED DESCRIPTION

[0052] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in 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 in 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.

[0053] See also Figure 1-Figure 10 As shown, this embodiment provides a technical solution:

[0054] A battery module shell polishing process for new energy vehicles, comprising the following steps:

[0055] S1. First, the operator adjusts the fixed positions of a pair of positioning blocks 360 in the placement table 350 in the clamping device 300 according to the size of the fixed housing 500, and puts the fixed housing 500 upside down in the groove on the surface of the positioning block 360;

[0056] S2, then, start the dual-axis motor 210 in the driving device 200, drive the rotating shafts 220 at both ends to rotate, and drive the first screw rods 230 on the left and right sides to rotate, so that the moving slider 240 and the fixed gear plate 250 move;

[0057] S3. At this time, the moving slider 240 drives the moving plate 310 to move forward as a whole. When the docking gear 330 contacts the plate surface tooth plate 120 in the working platform 100, it rotates, and drives the bidirectional screw rod 340 to rotate, so that the positions of the pair of placement platforms 350 move toward each other, so that the fixed housing 500 is fixed by the extrusion part 390.

[0058] S4, when the movable plate 310 moves to between the pair of grinding devices 400 and is fixed, the movable slider 240 will be freed from the restriction of the limiting plug 370 under the rotation of the first screw rod 230 and continue to move forward;

[0059] S5. Subsequently, the fixed tooth plate 250 will come into contact with the central gear 410 during the movement of the movable slider 240, thereby driving the central gear 410 to rotate;

[0060] S6. After the central gear 410 rotates, it drives the movable frame 420 to move toward the fixed housing 500 as a whole. When the grinding belt of the belt grinder 440 contacts the corner of the fixed housing 500, the dual-axis motor 210 is turned off.

[0061] S7, then, start the belt grinder 440, and control the T-beam 430 to move up and down in the movable frame 420, so as to fully grind the corners of the fixed housing 500;

[0062] S8, after the corner grinding of the fixed housing 500 is completed, the belt grinder 440 is turned off, and the dual-axis motor 210 is controlled to reverse. At this time, the moving slider 240 moving backward will first restore the position of the pair of grinding devices 400, and then restore the position of the clamping device 300;

[0063] S9, then, the operator takes out the fixed housing 500 with polished corners from the positioning block 360, and repeats the above operation to complete the polishing operation of the fixed housing 500 in batches;

[0064] In the above steps, the driving device 200 and the clamping device 300 on the working platform 100 are used to complete the clamping and transportation of the fixed housing 500, and the grinding device 400 is used to complete the grinding of the corners of the fixed housing 500;

[0065] In the present invention, the working platform 100 includes a fixed plate 110 and a plate surface tooth plate 120 disposed at the center of the top surface of the fixed plate 110 .

[0066] Specifically, two parallel plate slide grooves 111 are opened on the top surface of the fixed plate 110, the plate tooth plate 120 is fixedly connected to the top surface of the fixed plate 110 by bolts, a support rod 130 is welded and fixed on the bottom surface of the fixed plate 110, and a jacket cover 140 is clamped and fixed on the top surface of the fixed plate 110 above the grinding area.

[0067] Furthermore, the fixed plate 110 and the support rod 130 are used to ensure the strength of the overall structure of the working platform 100, the plate tooth plate 120 is used to cooperate with the structure in the clamping device 300, and the outer cover 140 is used to prevent burrs on the fixed shell 500 from flying around during the grinding process.

[0068] In this embodiment, Figure 3 As shown, the driving device 200 includes a dual-axis motor 210, a rotating shaft 220 disposed on the output shafts at both ends of the dual-axis motor 210, a first screw rod 230 that rotates as the rotating shaft 220 rotates, a moving slider 240 that moves as the first screw rod 230 rotates, and a fixed tooth plate 250 disposed on the outer side wall of the moving slider 240;

[0069] Specifically, the dual-axis motor 210 is fixedly connected to the top surface of the fixed plate 110 by bolts, the rotating shaft 220 is coaxially connected to the output shaft of the dual-axis motor 210, the movable slider 240 is threadedly connected to the first screw rod 230, a limiting groove 241 is provided on the inner wall of the movable slider 240, and a fixed tooth plate 250 is fixedly connected to the outer wall of the movable slider 240 by screws.

[0070] Furthermore, the front and rear ends of the first screw rod 230 are respectively rotatably connected to the protrusions on the top surface of the fixed plate 110, the end of the rotating shaft 220 is fixedly connected to the main bevel gear 260 through a bayonet, and the end position of the first screw rod 230 is fixedly connected to the secondary bevel gear 270 through a bayonet, and the main bevel gear 260 is meshed with the secondary bevel gear 270.

[0071] Furthermore, after the dual-axis motor 210 is started, it drives the rotating shafts 220 at both ends to rotate, and drives the first screw rods 230 on the left and right sides to rotate, so that the movable slider 240 moves together with the fixed gear plate 250, and the main bevel gear 260 rotates with the rotating shaft 220 and contacts the secondary bevel gear 270, thereby driving the first screw rod 230 to rotate.

[0072] In this embodiment, Figure 4-Figure 6 As shown, the clamping device 300 includes a moving plate 310, a docking gear 330 disposed at the center of the moving plate 310, a pair of placement tables 350 that move with the rotation of the docking gear 330, a positioning block 360 for determining the placement position of the fixed housing 500, a limiting plug block 370 for limiting the position of the moving slider 240, and a pressing portion 390 fixed on the top surface of the positioning block 360;

[0073] Specifically, the movable plate 310 is slidably connected to the top surface of the fixed plate 110, and a plate wall groove 311 for limiting the moving range of the movable slider 240 is opened on the outer walls at the left and right ends of the movable plate 310. A plate bottom pulley 320 is fixedly connected to the bottom surface of the movable plate 310 by screws, and the bottom surface of the plate bottom pulley 320 is in conflict with the bottom groove wall of the plate surface groove 111.

[0074] Furthermore, a bidirectional screw rod 340 is clamped inside the docking gear 330, and the bidirectional screw rod 340 is rotatably connected to the inside of the movable plate 310. The placement table 350 is threadedly connected to the bidirectional screw rod 340. The positioning block 360 is fixedly connected to the top surface of the placement table 350 by bolts. The limiting plug block 370 is slidably connected to the groove of the rear end groove wall of the board wall slide groove 311. A first pressure spring 380 is welded on the inner side wall of the limiting plug block 370, and the other end of the first pressure spring 380 is fixedly connected to the groove wall of the rear end groove of the board wall slide groove 311.

[0075] Furthermore, the movable slider 240 drives the movable flat plate 310 to move forward as a whole. When the docking gear 330 contacts the plate tooth plate 120 in the working platform 100, it rotates, thereby driving the bidirectional screw rod 340 to rotate, thereby allowing the positions of a pair of placement platforms 350 to move toward each other, thereby fixing the fixed shell 500 through the extrusion part 390.

[0076] Furthermore, the bottom pulley 320 is used to move in the board slide groove 111, so that the movement of the movable plate 310 is smoother. The positioning block 360 can arbitrarily change the fixed position on the placement table 350 through bolts to adapt to different models of fixed shells 500. The end of the limit block 370 is arc-shaped, and the elastic force provided by the first pressure spring 380 is used to extend the limit block 370 into the interior of the limit groove 241.

[0077] In this embodiment, Figure 7 As shown, the extrusion part 390 includes a fixed bracket 391 fixed to the top surface of the positioning block 360, a bending plate 392 arranged on the outside of the fixed bracket 391, a plurality of limiting telescopic rods 394 connected between the fixed bracket 391 and the bending plate 392, and a second pressure spring 393 sleeved on the outside of the limiting telescopic rod 394. The elastic force provided by the second pressure spring 393 pushes the bending plate 392 to move toward the direction of the grinding device 400.

[0078] Furthermore, the fixed bracket 391 is used to provide a fixed platform for the second pressure spring 393 and the limiting telescopic rod 394. The angle of the bending plate 392 is 90°, which is used to fit with the internal corners of the fixed shell 500. The limiting telescopic rod 394 is used to limit the telescopic range of the second pressure spring 393.

[0079] In this embodiment, Figure 8-Figure 9 As shown, the grinding device 400 includes a central gear 410, a moving frame 420 that moves as the central gear 410 rotates, a T-beam 430 that is slidably connected to the inside of the moving frame 420, and a belt grinder 440 fixed to both ends of the crossbar of the T-beam 430;

[0080] Specifically, the center gear 410 is rotatably connected to the inside of the through groove opened on the top surface of the fixed plate 110, and the center gear 410 is meshed with the fixed gear plate 250. The front and rear ends of the movable frame 420 are respectively provided with a second screw rod 450 and a limiting slide rod 460. The second screw rod 450 and the limiting slide rod 460 are rotatably connected to the bottom of the fixed plate 110 through the bracket at the end. The end of the second screw rod 450 extends to the bottom of the center gear 410 and the end position is sleeved on the rod end gear 470 meshed with the center gear 410.

[0081] Furthermore, the protrusion on the rear side wall of the moving frame 420 is threadedly connected to the second screw rod 450, the protrusion on the front side wall of the moving frame 420 is slidably connected to the limiting slide rod 460, and the cylinder 480 is fixedly connected to the inner bottom surface of the moving frame 420 by bolts, and the telescopic rod at the end of the cylinder 480 is clamped and fixed to the bottom of the T-beam 430.

[0082] Furthermore, after the center gear 410 rotates, it will conflict with the rod end gear 470 and drive it and the second screw rod 450 to rotate, thereby driving the movable frame 420 to move as a whole toward the fixed shell 500 until the grinding belt of the belt grinder 440 contacts the corner of the fixed shell 500. After the cylinder 480 is started, it is used to change the fixed height of the T-beam 430 in the movable frame 420.

[0083] The present invention also provides a battery module shell for new energy vehicles, which is processed by the above-mentioned grinding process for battery module shell for new energy vehicles, including a fixed shell 500, the fixed shell 500 includes a module placement plate 510, two clamping plates 520 vertically welded and fixed to the left and right ends of the module placement plate 510, two outer sleeve plates 530 symmetrically welded and fixed to the outside of the clamping plate 520, and a reinforcing plate 540 fixedly connected to the outer wall of the clamping plate 520 by bolts;

[0084] Furthermore, the module placement plate 510, the positioning plate 520 and the outer sleeve plate 530 are designed with reduced thickness, so that the overall weight of the fixed shell 500 is reduced. The reinforcing plate 540 is the connection between the fixed shell 500 and the external structure. Its own thickness allows the connection to have sufficient strength. At the same time, the through grooves opened inside improve its own heat dissipation.

[0085] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A battery module shell polishing process for new energy vehicles, characterized in that: The following steps are involved: S1. First, the operator adjusts the fixed positions of a pair of positioning blocks (360) in the placement table (350) in the clamping device (300) according to the size of the fixed housing (500), and places the fixed housing (500) upside down in the groove on the surface of the positioning block (360); S2, then, starting the dual-axis motor (210) in the driving device (200), driving the rotating shafts (220) at both ends to rotate, thereby driving the first screw rods (230) on the left and right sides to rotate, and causing the movable slider (240) and the fixed tooth plate (250) to move; S3. At this time, the movable slider (240) drives the movable plate (310) to move forward as a whole. When the docking gear (330) contacts the plate surface tooth plate (120) in the working platform (100), it rotates, driving the bidirectional screw rod (340) to rotate, thereby causing the positions of the pair of placement tables (350) to move toward each other, thereby fixing the fixed housing (500) through the extrusion portion (390); S4, when the movable plate (310) moves to between the pair of grinding devices (400) and is fixed, the movable slider (240) will be freed from the restriction of the limiting plug (370) and continue to move forward under the rotation of the first screw rod (230); S5. Subsequently, the fixed tooth plate (250) comes into contact with the central gear (410) during the movement of the movable slider (240), thereby driving the central gear (410) to rotate; S6. After the central gear (410) rotates, it drives the movable frame (420) to move as a whole toward the fixed housing (500). When the grinding belt of the belt grinder (440) contacts the corner of the fixed housing (500), the dual-axis motor (210) is turned off. S7, then, start the belt grinder (440), and control the T-shaped beam (430) to move up and down in the movable frame (420), so as to fully grind the corners of the fixed housing (500); S8, after the corner grinding of the fixed housing (500) is completed, the belt grinder (440) is turned off, and the dual-axis motor (210) is controlled to reverse, at which time the moving slider (240) moving backward will first restore the position of the pair of grinding devices (400) and then restore the position of the clamping device (300); S9, the operator then removes the fixed housing (500) with polished edges and corners from the positioning block (360), and repeats the above operation to complete the polishing operation of the fixed housings (500) in batches; In the above steps, the driving device (200) and the clamping device (300) on the working platform (100) are used to complete the clamping and transportation of the fixed shell (500), and the grinding device (400) is used to complete the grinding of the corners of the fixed shell (500); The working platform (100) comprises a fixed plate (110) and a plate surface tooth plate (120) arranged at the center position of the top surface of the fixed plate (110); The driving device (200) comprises a dual-axis motor (210), a rotating shaft (220) arranged on output shafts at both ends of the dual-axis motor (210), a first screw rod (230) that rotates as the rotating shaft (220) rotates, a moving slider (240) that moves as the first screw rod (230) rotates, and a fixed tooth plate (250) arranged on an outer side wall of the moving slider (240); The clamping device (300) comprises a movable plate (310), a docking gear (330) disposed at the inner center of the movable plate (310), a pair of placement tables (350) that move as the docking gear (330) rotates, a positioning block (360) used to determine the placement position of the fixed housing (500), a limiting plug block (370) that limits the position of the movable slider (240), and an extrusion portion (390) fixed on the top surface of the positioning block (360); The grinding device (400) comprises a central gear (410), a movable frame (420) that moves as the central gear (410) rotates, a T-shaped beam (430) that is slidably connected to the inside of the movable frame (420), and a belt grinder (440) that is fixed to both ends of a crossbar of the T-shaped beam (430).

2. The battery module housing polishing process for new energy vehicles according to claim 1, characterized in that: The top surface of the fixed plate (110) is provided with two parallel plate surface sliding grooves (111); the plate surface tooth plate (120) is fixedly connected to the top surface of the fixed plate (110) by bolts; a support rod (130) is welded and fixed to the bottom surface of the fixed plate (110); and a jacket cover (140) is clamped and fixed to the top surface of the fixed plate (110) above the grinding area.

3. The battery module housing polishing process for new energy vehicles according to claim 2, characterized in that: The dual-axis motor (210) is fixedly connected to the top surface of the fixed plate (110) by means of bolts, the rotating shaft (220) is coaxially connected to the output shaft of the dual-axis motor (210), the movable slider (240) is threadedly connected to the first screw rod (230), a limiting groove (241) is provided on the inner side wall of the movable slider (240), and a fixed tooth plate (250) is fixedly connected to the outer side wall of the movable slider (240) by means of screws.

4. The battery module housing polishing process for new energy vehicles according to claim 3, characterized in that: The front and rear ends of the first screw rod (230) are respectively rotatably connected to the protrusions on the top surface of the fixed plate (110); the end of the rotating shaft (220) is fixedly connected to the main bevel gear (260) via a bayonet; the end of the first screw rod (230) is fixedly connected to the secondary bevel gear (270) via a bayonet; the main bevel gear (260) is meshed with the secondary bevel gear (270).

5. The battery module housing polishing process for new energy vehicles according to claim 4, characterized in that: The movable plate (310) is slidably connected to the top surface of the fixed plate (110); the outer walls at the left and right ends of the movable plate (310) are provided with plate wall sliding grooves (311) for limiting the movement range of the movable slider (240); the bottom surface of the movable plate (310) is fixedly connected with a plate bottom pulley (320) by screws; the bottom surface of the plate bottom pulley (320) is in conflict with the bottom groove wall of the plate surface sliding groove (111).

6. The battery module housing polishing process for new energy vehicles according to claim 5, characterized in that: A bidirectional screw rod (340) is clamped inside the docking gear (330), and the bidirectional screw rod (340) is rotatably connected to the inside of the movable plate (310). The placement table (350) is threadedly connected to the bidirectional screw rod (340). The positioning block (360) is fixedly connected to the top surface of the placement table (350) by bolts. The limiting plug block (370) is slidably connected to the groove of the rear end groove wall of the plate wall slide groove (311). A first pressure spring (380) is welded on the inner side wall of the limiting plug block (370), and the other end of the first pressure spring (380) is fixedly connected to the groove wall of the rear end groove of the plate wall slide groove (311).

7. The battery module housing polishing process for new energy vehicles according to claim 6, characterized in that: The extrusion portion (390) includes a fixed bracket (391) fixedly connected to the top surface of the positioning block (360), a bending plate (392) arranged on the outside of the fixed bracket (391), a plurality of limiting telescopic rods (394) connected between the fixed bracket (391) and the bending plate (392), and a second pressure spring (393) sleeved on the outside of the limiting telescopic rod (394), wherein the elastic force provided by the second pressure spring (393) pushes the bending plate (392) to move in the direction of the grinding device (400).

8. The battery module housing polishing process for new energy vehicles according to claim 7, characterized in that: The central gear (410) is rotatably connected to the inside of a through slot opened on the top surface of the fixed plate (110), and the central gear (410) is meshed with the fixed tooth plate (250). The front and rear ends of the movable frame (420) are respectively provided with a second screw rod (450) and a limiting slide rod (460). The second screw rod (450) and the limiting slide rod (460) are rotatably connected to the bottom of the fixed plate (110) through brackets at the ends. The end of the second screw rod (450) extends to the bottom of the central gear (410) and is sleeved on a rod end gear (470) meshed with the central gear (410).

9. The battery module housing polishing process for new energy vehicles according to claim 8, characterized in that: The protrusion on the rear side wall of the movable frame (420) is threadedly connected to the second screw rod (450), the protrusion on the front side wall of the movable frame (420) is slidably connected to the limit sliding rod (460), and a cylinder (480) is fixedly connected to the inner bottom surface of the movable frame (420) by bolts, and the telescopic rod at the end of the cylinder (480) is clamped and fixed to the bottom of the T-beam (430).

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