A flanging die and flanging process for a new energy battery box

Abstract

The present invention relates to the technical field of flanging dies, and in particular to a flanging die for a new energy battery case and a flanging process thereof, comprising an upper die seat, a plurality of support blocks being vertically arranged at the bottom of the upper die seat, a lower pressing die being arranged at the bottom of the support blocks, a plurality of lower telescopic cylinders being arranged around the bottom of the lower pressing die, a lower die frame being arranged in an enclosed area within the lower telescopic cylinders, a plurality of outer modules being arranged on the top surface of the lower die frame, a plurality of upper modules being arranged on the inner side of the outer modules, and a lower pressing A die being arranged on the top of the upper modules; the outer modules and the upper modules are jointly pressed against an upward turning edge of the battery case; the flanging die realizes one-time stamping and folding of an inward turning edge and an upward turning edge of the battery case through a combination of an upper die seat and a lower pressing die, thereby greatly improving production efficiency and reducing the labor intensity of operators.

Description

Technical Field

[0001] The present invention relates to the technical field of flanging moulds, and in particular to a flanging mould for a new energy battery case and a flanging process thereof. Background Art

[0002] The main power source of new energy vehicles is batteries, and current batteries are generally protected by battery boxes. As the carrier of the battery pack, the battery box plays a key role in protecting the normal and safe operation of the battery pack. Therefore, the structural performance of the battery box is very important.

[0003] At present, battery cases are mainly made of metal alloy materials, and the preparation process adopts die stamping. Stamping die molding has the advantages of short molding time, high molding quality, and molding strength grade reaching the standard. However, when the battery case is stamped and flanging, the traditional forming stamping die and process are used. The flange of the battery case cannot be stamped and formed in the stamping direction of the stamping part. The traditional stamping die can only flanging one side of the battery case at a time, and can only fold one fold at a time. When the upper and lower flanging directions of the battery case are to be flanging, two folding processes are required, and the production efficiency is low. The battery case is folded twice in different directions, which affects the accuracy of the flanging. Due to the large volume of the battery case, the two processes are cumbersome and the labor intensity of the operators is high.

[0004] To this end, the present application provides a flanging mold and a flanging process for a new energy battery case to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a flanging mold and flanging process for a new energy battery case, so as to solve the problems in the background technology that the battery case is large in size, the two flanging processes are cumbersome, the labor intensity of operators is high, the production efficiency is low, and the flanging accuracy is low.

[0006] In order to solve the above technical problems, the present invention provides a flanging mold for a new energy battery case, including an upper mold base, a plurality of support blocks are vertically arranged at the bottom of the upper mold base, a lower pressure mold is arranged at the bottom of the support blocks, a plurality of lower telescopic cylinders are arranged around the bottom of the lower pressure mold, a lower mold frame is arranged in the enclosed area within the lower telescopic cylinders, a plurality of outer modules are arranged on the top surface of the lower mold frame, a plurality of upper modules are arranged on the inner side of the outer modules, and a lower pressure A mold is arranged on the top of the upper module; the outer modules and the upper modules are jointly against the upward flanging edge of the battery case.

[0007] A further improvement of the technical solution of the present invention is that the inner cavity of the lower mold frame body is closely fitted to the lower mold cavity, and the inner cavity of the lower mold cavity is closely fitted to the battery box, so as to be used for flanging formation of the battery box.

[0008] A further improvement of the technical solution of the present invention is that the bottom of the lower telescopic cylinder body is located in the area around the top surface of the lower die base, a lower pressure die is arranged on the top of the lower telescopic cylinder body, the lower pressure die body passes through a plurality of upper telescopic cylinders arranged vertically, the top end of the upper telescopic cylinder body is connected to the lower pressure A die, and the bottom end of the upper telescopic cylinder body is connected to the bottom surface of the upper die base body.

[0009] A further improvement of the technical solution of the present invention is that: a lower mold frame is set against the top surface of the lower mold base body, a lower mold cavity is adapted in the lower mold frame body, the lower mold cavity is adapted to the battery box, and several inner modules are arranged at the four corners of the inward turned edge of the battery box, and the arc-shaped wall of the inner module body is against the inner cavity wall in the battery box; the arc-shaped wall of the inner module body is adapted to the inner side wall of the upper module body to slide downward, so as to be used for folding the battery box downward 85-90 degrees.

[0010] A further improvement of the technical solution of the present invention is that an external boss is arranged on one side of the outer module body, the external boss is located at 1 / 3 of the upper area of ​​the outer module body, the upper area of ​​the external boss body abuts against the edge of the upturned edge in the battery box, and 2 / 3 of the lower area of ​​the outer module body abuts against the outer wall of the lower mold cavity.

[0011] A further improvement of the technical solution of the present invention is that the bottom surface of the upper module body abuts against the upper surface of the upwardly turned edge in the battery box for folding outwards 90 degrees.

[0012] A further improvement of the technical solution of the present invention is that the arcuate surface of the outer boss is adapted to any side edge of the bottom surface of the upper module body.

[0013] A further improvement of the technical solution of the present invention is that an upper module is arranged at the four corners of the upper edge of the lower mold cavity body, the upper module body is L-shaped, and an arc surface is arranged at the bending part of the L-shaped body, and the arc surface is 0.5-2cm away from the edge of the lower mold cavity.

[0014] A further improvement of the technical solution of the present invention is that the battery box body is a special-shaped body, and a plurality of battery slots and wiring harness slots are arranged in the inner cavity of the battery box body, and the depths of the battery slots and wiring harness slots are 0.5-2 cm respectively.

[0015] A further improvement of the technical solution of the present invention is that the battery box body is adapted by the inner module to press down along the inner side wall of the upper module to obtain an inward-folded edge, and the upper module is pressed down to adapt to the outer boss on one side of the outer module body to obtain an outward-folded upward-folded edge.

[0016] A flanging process of a flanging die for a new energy battery box includes the following steps:

[0017] Step 1: Install and inspect the stamping equipment mold, import the drawing model, and set the parameters;

[0018] Step 2: The operator places the raw material sheet of the battery box into the mold, and the raw material sheet is placed against the upper surface of the outer module;

[0019] Step 3: The upper die seat and the lower die move downward, and the lower die stops moving downward when it touches the upper surface of the lower die A. At this time, the upper telescopic cylinder at the bottom of the upper die seat moves downward, and drives the inner module downward, until the inner module drives the raw material plate of the battery box to move downward and touch the lower die cavity. At this point, the inner module is located at the four corners of the inner cavity of the battery box to form an inverted edge;

[0020] Step 4: After the inward-turned edge is formed, the upper die seat moves downward to drive the upper die block to move downward until it abuts against the upward-turned edge of the battery box and the outer boss in the outer die block, so that the upward-turned edge of the battery box body is formed;

[0021] Step 5: After the flanging is completed, the battery box is quality inspected and proceeds to the next process if it passes the quality inspection.

[0022] By adopting the above technical solution, the present invention has the following beneficial effects:

[0023] 1. The present invention provides a flanging die for a new energy battery case. The flanging die has an innovative two-layer structure. Through the combination of an upper die base and a lower die, the battery case can be folded inward and upward by one-time stamping, thereby greatly improving production efficiency. Compared with the traditional flanging process, the labor intensity of operators and the complexity of operation are reduced, and the accuracy of flanging is improved by one-time stamping.

[0024] 2. The present invention provides a flanging mold for a new energy battery box, in which an inner module is pushed downward by an upper telescopic cylinder, a telescopic rod in the upper telescopic cylinder is penetrated and arranged in the lower die, and the base of the upper telescopic cylinder body is fixed to the bottom of the upper die seat. At this time, the upper telescopic cylinder is in a vertical inverted fixed state, and a plurality of support blocks are provided to support the upper telescopic cylinder to prevent the telescopic rod in the upper telescopic cylinder from being deformed or damaged, thereby affecting the up and down movement of the inner module. Support blocks are respectively provided on both sides of each column of the upper telescopic cylinder to improve the stroke accuracy of the upper telescopic cylinder.

[0025] 3. The present invention provides a flanging mold for a new energy battery case, in which a plurality of outer modules, inner modules and upper modules are combined to realize the upward and inward flanging edges of the battery case. The combination of multiple modules facilitates the repair, maintenance and replacement of a single mold, and is also convenient for installation and disassembly.

[0026] 4. The present invention provides a flanging mold for a new energy battery box, in which the arc surface of the upper module body and the outer boss of the outer module body are both used to increase the gap force of the flanging to prevent the risk of folding, cracking and breaking, and the cracking and breaking are reduced by setting the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a structural schematic diagram of a flanging die for a new energy battery box;

[0029] Figure 2 It is a structural schematic diagram of the lower die and the lower die frame;

[0030] Figure 3 It is a schematic diagram of the structure of the lower pressing A mold and the battery box;

[0031] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure in;

[0032] Figure 5 It is a schematic diagram of the structure of the battery box, outer module, upper module and inner module;

[0033] Figure 6 It is a partial enlarged structural diagram of the inner module and the battery box;

[0034] Figure 7 for Figure 6 The structural diagram of the middle and inner modules;

[0035] Figure 8 It is a partial enlarged structural schematic diagram of the battery box and the upward-turned edge;

[0036] Fig. 9 It is a partial enlarged structural schematic diagram of the battery box and the upward-turned edge;

[0037] Fig.10 It is a partial enlarged structural schematic diagram of the lower mold cavity and the upper mold module;

[0038] Fig.11 It is a partial enlarged structural schematic diagram of the lower mold cavity, the outer module and the upper module;

[0039] Fig.12 It is a partial enlarged structural schematic diagram of the outer module and the upper module;

[0040] Fig.13 It is a partial enlarged structural schematic diagram of the outer module and the outer boss;

[0041] Fig.14 A schematic diagram of the structure of the battery box.

[0042] Figure numerals: 1. upper die base; 2. support block; 3. upper telescopic cylinder; 4. lower pressing die; 5. lower telescopic cylinder; 6. lower die frame; 7. lower die base; 8. outer module; 9. upper module; 10. lower pressing A-die; 11. battery case; 12. inner module; 13. inner cavity wall; 14. upward turned edge; 15. inward turned edge; 16. curved surface; 17. lower die cavity; 18. outer boss; 19. curved wall; 110. wiring harness slot; 111. battery slot. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The present invention is further explained below in conjunction with specific implementation modes.

[0047] like Figure 1-Figure 14As shown, a flanging mold for a new energy battery box provided in this embodiment includes an upper mold base 1, a plurality of support blocks 2 are vertically arranged at the bottom of the upper mold base 1, a lower pressing mold 4 is arranged at the bottom of the support block 2, a plurality of lower telescopic cylinders 5 are arranged around the bottom of the lower pressing mold 4, a lower mold frame 6 is arranged in the inner enclosed area of ​​the lower telescopic cylinder 5, a plurality of outer modules 8 are arranged on the top surface of the lower mold frame 6, a plurality of upper modules 9 are arranged on the inner side of the outer module 8, and a lower pressing A mold 10 is arranged on the top of the upper module 9; the outer module 8 and the upper module 9 are jointly pressed against the upper flanging edge 14 of the battery box 11; the inner cavity of the lower mold frame 6 body is pressed against and adapted to the lower mold cavity 17, and the inner cavity of the lower mold cavity 17 is pressed against and adapted to the battery box 11, which is used for flanging forming of the battery box 11; four upper telescopic cylinders 3 are arranged through the body of the lower pressing mold 4, the top surface of the upper telescopic cylinder 3 is connected to the inner module 12, and the inner module 12 presses down the battery box. 11, thereby forming an inwardly turned edge 15, and the lower part of the outer module 8 abuts against the outer wall of the lower mold cavity 17, which is used to limit the deformation of the lower mold cavity 17. When the inner module 12 presses down the battery case 11 to enter the lower mold cavity 17, the inner module 12 is prevented from pressing down the battery case 11 and the deformation of the lower mold cavity 17 overflowing, and the outer boss 18 on one side of the outer module 8 body abuts against the edge of the upturned edge 14 in the battery case 11. When the upper module 9 is pressed down, the outer bottom edge of the upper module 9 fits on the outer boss 18, thereby forming an outwardly turned upturned edge 14; the innovative two-layer structure of the flanging mold is molded at one time, and through the combination of the inner module, the outer module and the upper module, the battery case is stamped and folded into the inwardly turned edge and the upturned edge at one time, which greatly improves the production efficiency; compared with the traditional flanging process, the labor intensity of the operator is reduced.

[0048] like Figure 1-Figure 3 As shown, in this embodiment, the bottom of the lower telescopic cylinder 5 body is located in the surrounding area of ​​the top surface of the lower mold base 7, and a lower pressing mold 4 is arranged on the top of the lower telescopic cylinder 5 body. The lower pressing mold 4 body is vertically penetrated by a plurality of upper telescopic cylinders 3, and the top of the upper telescopic cylinder 3 body is connected to the lower pressing A mold 10, and the bottom of the upper telescopic cylinder 3 body is connected to the bottom surface of the upper mold base 1 body; four lower telescopic cylinders 5 are arranged at the four corners of the lower mold base 7 for opening and closing the mold, and a lower pressing mold 4 is arranged on the top of the telescopic cylinder 5, and a through hole is vertically penetrated by the lower pressing mold 4 and the lower pressing A mold 10, and the telescopic rod in the upper telescopic cylinder 3 is adapted in the through hole, and the top of the telescopic rod is connected to the inner module 12; The base of the telescopic cylinder 3 is connected to the bottom surface of the upper die base 1, and four support blocks 2 are arranged between the upper die base 1 and the lower die 4, and the support blocks 2 are used to support the upper telescopic cylinder 3; the inner module in the mold is pushed down by the upper telescopic cylinder, and the telescopic rod in the upper telescopic cylinder is penetrated and arranged in the lower die, and the base of the upper telescopic cylinder body is fixed to the bottom of the upper die base. At this time, the upper telescopic cylinder is in a vertical inverted fixed state, and the upper telescopic cylinder is supported by arranging a number of support blocks to prevent the telescopic rod in the upper telescopic cylinder from being deformed or damaged, which affects the up and down movement of the inner module, and support blocks are respectively arranged on both sides of each column of the upper telescopic cylinder to improve the stroke accuracy of the upper telescopic cylinder.

[0049] like Figure 3-Figure 9 , Figure 11-13 As shown, in this embodiment, the top surface of the lower mold base 7 body is against the lower mold frame 6, the lower mold frame 6 body is adapted to the lower mold cavity 17, the lower mold cavity 17 is adapted to the battery box 11, and a plurality of inner modules 12 are arranged at the four corners of the inverted edge 15 in the battery box 11, and the arcuate wall 19 of the inner module 12 body is against the inner cavity wall 13 in the battery box 11; the arcuate wall 19 of the inner module 12 body is adapted to the inner side wall of the upper module 9 body to slide downward, so as to be used for the battery box 11 to be folded downward by 85-90 degrees; The lower mold cavity 17 is adapted to be installed in the mold frame 6. The overall height of the lower mold cavity 17 is greater than the overall height of the lower mold frame 6, which enhances the stability of the inward-turned edge 15 in the battery box 11. The upper telescopic cylinder 3 drives the inner module 12 to press down, and the inner module 12 slides downward along the inner side wall of the upper module 9 until the inner module 12 drives the battery box 11 to fold downward 85-90 degrees to form an inward-turned edge 15. By pressing down the inner module 12, the battery box 11 is driven to be concave from the outer module 8 until the inner cavity of the battery box 11 is formed.

[0050] Furthermore, an outer boss 18 is provided on one side of the outer module 8 body, and the outer boss 18 is located at 1 / 3 of the upper area of ​​the outer module 8 body, and the upper area of ​​the outer boss 18 body abuts against the edge of the upturned edge 14 in the battery box 11, and 2 / 3 of the lower area of ​​the outer module 8 body abuts against the outer wall of the lower mold cavity 17; the arc surface of the outer boss 18 adapts to any side edge of the bottom surface of the upper module 9 body; the bottom surface of the upper module 9 body abuts against the upper surface of the upturned edge 14 in the battery box 11 for folding outward 90 degrees; the outer module 8 body An outer boss 18 is provided on one side of the body, and the outer boss 18 abuts against the edge of the upturned edge 14 in the battery box 11, and the outer module 8 body abuts against the outer wall of the lower mold cavity 17 to stabilize the lower mold cavity 17, and 2 / 3 of the lower area of ​​the outer module 8 body is adapted to the upper part of the lower mold cavity 17 body; the flanging mold is combined with a plurality of outer modules, inner modules and upper modules to realize the upturned edge and the inturned edge of the battery box, and the combination of multiple modules is convenient for single mold repair, maintenance and replacement, and is also convenient for installation and disassembly;

[0051] At the same time, the outer boss of the outer module body increases the clearance force of the flange to prevent the risk of folding, cracking and breaking.

[0052] like Fig.10 As shown, in this embodiment, an upper module 9 is arranged at the four corners of the upper edge of the lower mold cavity 17. The upper module 9 is L-shaped, and an arc surface 16 is arranged at the bending part of the L-shaped body. The arc surface 16 is 0.5-2 cm away from the edge of the lower mold cavity 17. The arc surface of the upper module body in the flanging mold increases the gap force of the flanging, prevents the risk of cracking and breaking during flanging, and reduces cracking and breaking by setting a gap.

[0053] like Fig.14As shown, in this embodiment, the battery box body 11 is a special-shaped body, and the inner cavity of the battery box body 11 is provided with a plurality of battery slots 111 and wiring harness slots 110, and the depths of the battery slots 111 and the wiring harness slots 110 are respectively 0.5-2 cm; the battery box body 11 is adapted by the inner module 12 to press down along the inner wall of the upper module 9 to obtain an inward-folded edge 15, and the upper module 9 is pressed down to adapt to the outer boss 18 on one side of the outer module 8 to obtain an outward-folded upward-folded edge 14, and the flanging mold realizes the one-time stamping and folding of the inward-folded edge and the upward-folded edge of the battery box, which greatly improves the production efficiency.

[0054] In this embodiment, a flanging process of a flanging mold for a new energy battery box is also provided, comprising the following steps:

[0055] Step 1: Install and inspect the stamping equipment mold, import the drawing model, and set the parameters;

[0056] Step 2: The operator places the raw material plate of the battery box 11 into the mold, and the raw material plate is placed against the upper surface of the outer module 8;

[0057] Step 3: The upper die seat 1 and the lower die 4 move downward, and the lower die 4 stops moving downward when it abuts against the upper surface of the lower die A 10. At this time, the upper telescopic cylinder 3 at the bottom of the upper die seat 1 moves downward, and drives the inner module 12 to move downward, until the inner module 12 drives the raw material plate of the battery box 11 to move downward and abut against the lower die cavity 17. At this point, the inner module 12 is located at the four corners of the inner cavity of the battery box 11 to form an inverted edge 15;

[0058] Step 4: After the inverted edge 15 is formed, the upper die seat 1 moves downward to drive the upper die block 9 to move downward until it abuts against the inverted edge 14 of the battery box 11 and the outer boss 18 in the outer die block 8, so that the inverted edge 14 of the battery box 11 body is formed;

[0059] Step 5: The battery case 11 after flanging is subjected to quality inspection, and if the quality inspection is correct, it proceeds to the next process.

[0060] The flanging process, through the combination of the upper die base and the lower die, realizes the one-time stamping and folding of the battery box into the inward-flanged edge and the upward-flanged edge, which greatly improves the production efficiency and reduces the labor intensity of the operators.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flanging die for a new energy battery box, characterized in that: The invention comprises an upper die base (1), a plurality of support blocks (2) are vertically arranged at the bottom of the upper die base (1), a lower pressing die (4) is arranged at the bottom of the support blocks (2), a plurality of lower telescopic cylinders (5) are arranged around the bottom of the lower pressing die (4), a lower die frame (6) is arranged in the enclosed area inside the lower telescopic cylinders (5), a plurality of outer modules (8) are arranged on the top surface of the lower die frame (6), a plurality of upper modules (9) are arranged inside the outer modules (8), and a lower pressing A die (10) is arranged on the top of the upper modules (9); the outer modules (8) and the upper modules (9) are jointly pressed against the upward turning edge (14) of the battery box (11); the lower The top surface of the mold base (7) body is abutted against a lower mold frame (6), the lower mold frame (6) body is adapted to fit a lower mold cavity (17), the lower mold cavity (17) is adapted to fit a battery box (11), a plurality of inner modules (12) are arranged at the four corners of an inwardly turned edge (15) in the battery box (11), and the arcuate wall (19) of the inner module (12) body abuts against an inner cavity wall (13) in the battery box (11); the arcuate wall (19) of the inner module (12) body fits against an inner side wall of the upper module (9) body and slides downward, so as to fold the battery box (11) downward by 85-90 degrees.

2. According to claim 1, a flanging die for a new energy battery box is characterized in that: The inner cavity of the lower mold frame (6) is in close contact with the lower mold cavity (17), and the inner cavity of the lower mold cavity (17) is in close contact with the battery box (11), so as to be used for flanging of the battery box (11).

3. According to claim 1, a flanging die for a new energy battery box is characterized in that: The bottom of the lower telescopic cylinder (5) body is located in the area around the top surface of the lower die base (7), and a lower pressing die (4) is arranged on the top of the lower telescopic cylinder (5) body. The lower pressing die (4) body passes through a plurality of upper telescopic cylinders (3) vertically arranged thereon, and the top end of the upper telescopic cylinder (3) body is connected to the lower pressing die A (10), and the bottom end of the upper telescopic cylinder (3) body is connected to the bottom surface of the upper die base (1) body.

4. According to claim 1, a flanging die for a new energy battery box is characterized in that: An external boss (18) is provided on one side of the outer module (8) body. The external boss (18) is located at 1 / 3 of the upper area of ​​the outer module (8) body. The upper area of ​​the external boss (18) body abuts against the edge of the upturned edge (14) in the battery box (11), and 2 / 3 of the lower area of ​​the outer module (8) body abuts against the outer wall of the lower mold cavity (17).

5. According to claim 1, the flanging die for a new energy battery box is characterized in that: The bottom surface of the upper module (9) body abuts against the upper surface of the upwardly turned edge (14) in the battery box (11) for being folded outwards by 90 degrees.

6. The flanging die for a new energy battery box according to claim 4, characterized in that: The arc-shaped surface of the outer boss (18) is adapted to fit any side edge of the bottom surface of the upper module (9) body.

7. The flanging die for a new energy battery box according to claim 4, characterized in that: An upper module (9) is arranged at four corners of the upper edge of the lower mold cavity (17). The upper module (9) is L-shaped, and a curved surface (16) is arranged at the inner bending part of the L-shaped body. The curved surface (16) is 0.5-2 cm away from the edge of the lower mold cavity (17).

8. The flanging die for a new energy battery box according to claim 2, characterized in that: A battery box (11), wherein the main body of the battery box (11) is a special-shaped body, and a plurality of battery slots (111) and wiring harness slots (110) are arranged in the inner cavity of the main body of the battery box (11), wherein the depths of the battery slots (111) and the wiring harness slots (110) are respectively 0.5-2 cm.

9. A flanging process based on the flanging die of the new energy battery box according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: Install and inspect the stamping equipment mold, import the drawing model, and set the parameters; Step 2: The operator places the raw material plate of the battery box (11) into the mold, and the raw material plate is placed against the upper surface of the outer module (8); Step 3: the upper die seat (1) and the lower die (4) move downward, and the lower die (4) stops moving downward when it abuts against the upper surface of the lower die (10). At this time, the upper telescopic cylinder (3) at the bottom of the upper die seat (1) moves downward, and drives the inner module (12) to move downward until the inner module (12) drives the raw material plate of the battery box (11) to move downward and abut against the lower die cavity (17). At this point, the inner module (12) is located at the four corners of the inner cavity of the battery box (11) to form an inverted edge (15); Step 4: After the inward-turned edge (15) is formed, the upper die seat (1) moves downward to drive the upper die block (9) to move downward until it abuts against the upward-turned edge (14) of the battery box (11) and the outer boss (18) in the outer die block (8), thereby forming the upward-turned edge (14) of the battery box (11) body; Step 5: The battery box (11) after flange forming is subjected to quality inspection, and if the quality inspection is passed, it proceeds to the next process.

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