Built-in battery box of new energy vehicle and production process of built-in battery box

Abstract

The invention relates to the technical field of automobile accessory manufacturing, and particularly discloses a new energy vehicle built-in battery box and a production process thereof, S1, a cold chamber die-casting machine and a die-casting die are used for die-casting molding of a product; s2, the formed die casting is sequentially subjected to the procedures of water gap slag bubble flushing, water gap polishing, shot blasting hanging, deburring and the like, and surface treatment is conducted on the casting; s3, ultrasonic cleaning work is synchronously conducted on the multiple castings through an ultrasonic cleaning device, and chromizing treatment is conducted on the castings after cleaning is completed; s4, powder spraying is conducted on the casting obtained after chromizing is completed, and CNC four-axis drilling and tapping are conducted on the workpiece after the powder spraying procedure is completed; and in the casting cleaning procedure, the workpieces are automatically conveyed and transferred to the designated positions for different cleaning procedures through the ultrasonic cleaning device, the labor intensity of workers is reduced, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile accessory manufacturing, in particular to a built-in battery box of a new energy vehicle and a production process thereof. BACKGROUND

[0002] The new energy vehicle refers to an automobile adopting unconventional vehicle fuel as a power source and adopting advanced technologies in vehicle power control and driving to form an automobile with advanced technical principles and new technologies and structures. A commonly used new energy battery is a lithium battery, which has the advantages of small size, light weight, long cycle life, low self-discharge rate, no memory effect and no pollution. The battery box is used for placing the new energy battery.

[0003] The battery box in the prior art is mostly formed by pressure casting, and the product after forming needs to be processed in multiple processes. The casting needs to be cleaned multiple times in the cleaning process, and therefore the casting needs to be transferred to different water tanks for cleaning. However, the transfer of the casting is mostly completed manually, which is labor-intensive and low in working efficiency. SUMMARY

[0004] The application provides a built-in battery box of a new energy vehicle and a production process thereof, which can automatically transport and transfer workpieces to specified positions for different cleaning processes in the casting cleaning process, thereby reducing the labor intensity.

[0005] The application provides a built-in battery box of a new energy vehicle and a production process thereof, which adopts the following technical scheme: A built-in battery box of a new energy vehicle and a production process thereof, the process comprising the following steps: S1: forming the product by pressure casting by using a cold chamber pressure casting machine and a pressure casting mold; S2: sequentially performing a water inlet slag bubble flushing process, a water inlet polishing process, a hanging shot blasting process and a deburring process and the like on the formed pressure casting, and performing surface treatment on the casting; S3: synchronously performing ultrasonic cleaning work on multiple castings by using an ultrasonic cleaning device, and performing chromizing treatment on the castings after the cleaning is completed; S4: first performing powder spraying on the castings after the chromizing is completed, and then performing CNC four-axis drilling and tapping on the workpieces after the powder spraying process is completed.

[0006] Preferably, the ultrasonic cleaning device comprises a cleaning tank and a feeding mechanism; the first ultrasonic generator is installed in the cleaning tank, and a water cleaning tank is arranged outside one side of the cleaning tank; the second ultrasonic generator is installed in the water cleaning tank; the feeding mechanism is arranged on the top of the cleaning tank and the water cleaning tank, and the feeding mechanism can hang and convey the workpieces into the cleaning tank and the water cleaning tank.

[0007] By adopting the above technical scheme, when the cleaning work of the casting is carried out, the feeding mechanism first sends the casting into the cleaning tank, starts the first ultrasonic generator to clean the casting with the ultrasonic cleaning agent, then the feeding mechanism sends the casting into the water washing tank, and starts the second ultrasonic generator to perform the ultrasonic water washing work on the casting, so that the convenient conveying and transferring of the casting in different cleaning processes are realized, the trouble of manually transferring the casting is reduced, the casting cleaning efficiency is improved, and the labor intensity is reduced.

[0008] Preferably, the feeding mechanism comprises a frame body, a first motor and a hanger; the frame body is arranged at the top of the cleaning tank and the water washing tank, and a chute is arranged on the top wall of the frame body; the first motor is installed on the outer wall of one end of the frame body, and a first screw rod extending into the chute is coaxially fixed to the output end of the first motor; a sliding block in threaded transmission cooperation with the first screw rod is arranged outside the first screw rod; the sliding block is in sliding cooperation with the inner wall of the chute, and an electric push rod is vertically arranged on the sliding block; the hanger is installed on the output end of the electric push rod, and the hanger is located at the bottom of the sliding block.

[0009] By adopting the above technical scheme, the casting to be cleaned is hung on the hanger, the first motor is started to drive the first screw rod to rotate, the sliding block and the hanger at the bottom of the sliding block are moved, when the hanger moves to the top of the cleaning tank, the electric push rod drives the hanger to move downward, the casting is immersed in the cleaning agent in the cleaning tank for cleaning, after the cleaning is completed, the electric push rod drives the hanger to move upward to the top of the cleaning tank, then the first motor drives the sliding block to move, the sliding block drives the hanger to move to the top of the water washing tank, so that the electric push rod drives the hanger to move downward into the water washing tank for water washing work.

[0010] Preferably, a deslagging port is arranged on the inner wall of the bottom end of the water washing tank; a valve is arranged on the deslagging port; a second motor is installed on the outer wall of the water washing tank; a first reciprocating screw rod extending into the water washing tank is coaxially fixed to the output end of the second motor; a scraper in threaded transmission cooperation with the first reciprocating screw rod is arranged outside the first reciprocating screw rod; and the scraper is in sliding cooperation with the bottom wall of the water washing tank.

[0011] By adopting the above technical scheme, during long-term use of the water washing tank, the second motor can be started to drive the first reciprocating screw rod to rotate, the scraper moves along the first reciprocating screw rod in the axial direction to clean the bottom wall of the water washing tank, the settled impurity particles are cleaned and scraped to the deslagging port for discharge, and the possibility that the impurity particles are bonded to the bottom wall of the water washing tank and are difficult to clean is reduced.

[0012] Preferably, the water washing tank is rotatably connected with a second reciprocating lead screw coaxial with the first reciprocating lead screw on the inner wall near the top; the second reciprocating lead screw is externally sleeved with a push plate in screw transmission cooperation with the second reciprocating lead screw; the inner wall of the water washing tank is fixedly connected with a guide rod penetrating through the push plate; the push plate is in sliding cooperation with the guide rod, and the outer wall of the push plate is provided with an oil absorption felt; the first reciprocating lead screw is provided with a first transmission assembly capable of driving the second reciprocating lead screw to rotate.

[0013] By adopting the above technical scheme, the first reciprocating lead screw drives the second reciprocating lead screw to rotate through the first transmission assembly in the rotating process, so as to drive the push plate to move along the second reciprocating lead screw in the reciprocating movement of the push rod, the oil stains floating on the water surface can be absorbed by the oil absorption felt, the clean water is kept clean, and the replacement frequency of the clean water is reduced.

[0014] Preferably, the first transmission assembly comprises a first pulley, a second pulley and a first belt; the first pulley is coaxially fixedly connected to the outer wall of the end portion of the first reciprocating lead screw; the second pulley is coaxially fixedly connected to the outer wall of the end portion of the second reciprocating lead screw; and the first belt is sleeved on the outer portions of the first pulley and the second pulley.

[0015] By adopting the above technical scheme, the first reciprocating lead screw drives the second reciprocating lead screw to rotate in the rotating process under the cooperation of the first pulley, the second pulley and the first belt, so as to realize the transmission of kinetic energy in the rotating process of the first reciprocating lead screw.

[0016] Preferably, the water washing tank is provided with a water receiving box on the outer wall near the end portion of the second reciprocating lead screw; a filter screen is mounted on the inner wall of the water receiving box; the outer wall of the water washing tank on the side where the water receiving box is located is provided with a through opening located at the top of the water receiving box; a third reciprocating lead screw is rotatably connected to the inner wall of the water receiving box and located at the top of the filter screen; the third reciprocating lead screw is coaxial with the second reciprocating lead screw, and a cleaning brush is externally sleeved with the third reciprocating lead screw and in contact with the top surface of the filter screen; the cleaning brush is in screw transmission cooperation with the third reciprocating lead screw, and in sliding cooperation with the inner wall of the water receiving box; and the end portion of the second reciprocating lead screw is provided with a second transmission assembly capable of driving the third reciprocating lead screw to rotate.

[0017] By adopting the above technical scheme, the push plate drives the upper layer of clean water to be discharged from the through opening to the water receiving box in the movement of the push plate driven by the second reciprocating lead screw, so as to drive the impurity particles floating on the surface of the upper layer of water to be discharged, to keep the clean water clean, and to filter the impurity particles in the water by the filter screen arranged in the water receiving box, so as to reuse the separated water, save water resources, and drive the third reciprocating lead screw to rotate by the second transmission assembly, so as to drive the cleaning brush to move and clean the filter screen, to reduce the possibility of the mesh of the filter screen being blocked by impurities, and to ensure the water permeability of the filter screen.

[0018] Preferably, the second transmission assembly comprises a third pulley, a fourth pulley and a second belt; the third pulley is coaxially fixed on the outer wall of the second reciprocating wire rod end; the fourth pulley is coaxially fixed on the outer wall of the third reciprocating wire rod end; and the second belt is sleeved outside the third pulley and the fourth pulley.

[0019] Through the above technical scheme, under the cooperation of the third pulley, the fourth pulley and the second belt, the second reciprocating wire rod drives the third reciprocating wire rod to rotate in the rotating process, so that the kinetic energy in the rotating process of the second reciprocating wire rod is transmitted.

[0020] Preferably, a first electric heating pipe is arranged on the inner wall of the cleaning tank; and a second electric heating pipe is arranged on the inner wall of the water washing tank.

[0021] Through the above technical scheme, the first electric heating pipe and the second electric heating pipe can heat the cleaning agent and the water in the cleaning tank and the water washing tank respectively, adjust the temperature of the cleaning agent and the water, and ensure the cleaning effect of the workpiece ultrasonic cleaning work.

[0022] A new energy vehicle built-in battery box is manufactured by the above production process, comprising a box body; the box body is detachably provided with a box cover, and a plurality of through holes for passing lines are formed in the side wall of the box body; and the box cover is provided with heat dissipation fins.

[0023] Through the above technical scheme, the box body and the box cover are both formed by pressure casting, which is convenient for manufacturing; the through holes drilled in the box body can be used for passing power lines; and the arrangement of the heat dissipation fins improves the heat dissipation performance of the battery box.

[0024] In summary, the present application has the following beneficial effects: 1. The feeding mechanism can first send the casting into the cleaning tank, and then the first ultrasonic generator is started to clean the casting with ultrasonic cleaning agent, and then the feeding mechanism sends the casting into the water washing tank, and the second ultrasonic generator is started to perform ultrasonic water washing work on the casting, so that the casting can be conveniently transported and transferred in different cleaning processes, the trouble of manually transporting the casting is reduced, the casting cleaning efficiency is improved, and the labor intensity is reduced; 2. During long-term use of the water washing tank, the second motor can be started to drive the first reciprocating wire rod to rotate, so that the scraper can clean the bottom wall of the water washing tank, and the impurity particles settled at the bottom of the water washing tank can be cleaned and scraped into the slag discharge port for discharge, thereby reducing the possibility that the impurity particles are bonded to the bottom wall of the water washing tank and are difficult to clean; 3. The first reciprocating wire rod drives the second reciprocating wire rod to rotate through the first transmission assembly in the rotating process, so that the push plate moves axially along the second reciprocating wire rod, and the oil absorption felt can absorb the oil floating on the water surface in the process of reciprocating movement of the push rod, so that the water remains clean and the water replacement frequency is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of an ultrasonic cleaning device in the present application; Figure 2 is a structural schematic diagram of the internal structure of a cleaning tank and a water washing tank in the present application; Figure 3 is a structural schematic diagram of the cooperation of an electric push rod, a sliding block and a hanger in the present application; Figure 4 is a structural schematic diagram of the transmission of a first reciprocating screw rod and a second reciprocating screw rod in the present application; Figure 5 is a structural schematic diagram of the transmission of a second reciprocating screw rod and a third reciprocating screw rod in the present application; Figure 6 is a structural schematic diagram of a new energy vehicle built-in battery box.

[0026] BRIEF DESCRIPTION OF DRAWINGS 1, cleaning tank; 11, first ultrasonic generator; 12, first electric heating pipe; 2, feeding mechanism; 21, frame body; 211, sliding groove; 22, first motor; 221, first screw rod; 23, hanger; 24, sliding block; 25, electric push rod; 3, water washing tank; 31, second ultrasonic generator; 32, slag discharge port; 33, through port; 34, second electric heating pipe; 4, second motor; 41, first reciprocating screw rod; 42, scraper; 43, second reciprocating screw rod; 44, push plate; 441, oil absorption felt; 45, guide rod; 46, first transmission assembly; 461, first pulley; 462, second pulley; 463, first belt; 5, water receiving box; 51, filter screen; 52, third reciprocating screw rod; 53, cleaning brush; 54, second transmission assembly; 541, third pulley; 542, fourth pulley; 543, second belt; 6, box body; 61, box cover; 62, through hole; 63, heat dissipation fin. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below with reference to the accompanying drawings. Identical parts are denoted by identical reference numerals in the following description. It should be noted that the words "front", "back", "left", "right", "upper", "lower", "bottom surface" and "top surface" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.

[0028] The present application discloses a production process of a new energy vehicle built-in battery box, which comprises the following steps: S1: realizing the die casting forming of the product by using a cold chamber die casting machine and a die casting mold in a die casting workshop; S2: sequentially performing the processes of water port slag bubble flushing, water port polishing, hanging shot blasting and deburring on the product formed by S1, so as to improve the surface quality of the product; S3: In the process of cleaning the product, the ultrasonic cleaning device automatically transports the workpiece to the designated position for different cleaning procedures, reduces the labor intensity, provides work efficiency, and performs chromizing treatment on the casting after the cleaning process is completed; S4: The casting after the chromizing is completed is first sprayed, and then the CNC four-axis drilling and tapping are performed on the workpiece after the spraying process is completed.

[0029] The ultrasonic cleaning device, as shown in Figure 1 and Figure 2 , comprises a cleaning tank 1, a water washing tank 3 and a feeding mechanism 2, a first ultrasonic generator 11 and a first electric heating pipe 12 are installed on the inner wall of the cleaning tank 1, the water washing tank 3 is arranged outside one side of the cleaning tank 1, a second ultrasonic generator 31 and a second electric heating pipe 34 are installed in the water washing tank 3, and the feeding mechanism 2 is arranged outside the cleaning tank 1 and the water washing tank 3. The feeding mechanism 2 can hang the workpiece into the cleaning tank 1 and the water washing tank 3.

[0030] The feeding mechanism 2 first sends the casting into the cleaning tank 1, starts the first ultrasonic generator 11 to clean the casting with ultrasonic cleaning agent, then the feeding mechanism 2 sends the casting into the water washing tank 3, and starts the second ultrasonic generator 31 to perform ultrasonic water washing work on the casting. The first electric heating pipe 12 and the second electric heating pipe 34 can adjust the cleaning agent and water to a suitable temperature to ensure the cleaning effect of the ultrasonic cleaning work.

[0031] As shown in Figure 1 and Figure 3 , the feeding mechanism 2 comprises a frame body 21, a first motor 22, a hanger 23 and a sliding block 24. The frame body 21 is installed on the top of the cleaning tank 1 and the water washing tank 3 through a vertically arranged support rod. A sliding groove 211 is formed in the frame body 21 along the arrangement direction of the cleaning tank 1 and the water washing tank 3. The first motor 22 is horizontally installed on one end of the outer wall of the frame body 21. A first lead screw 221 coaxially fixed to the output end of the first motor 22 extends into the sliding groove 211. The sliding block 24 is sleeved and installed outside the first lead screw 221. The sliding block 24 is in threaded transmission cooperation with the first lead screw 221. The sliding block 24 is in sliding cooperation with the inner wall of the sliding groove 211. An electric push rod 25 vertically penetrating the sliding block 24 is installed on the sliding block 24. The output end of the electric push rod 25 extends to the bottom of the sliding block 24. The hanger 23 is fixed to the output end of the electric push rod 25. The casting can be hung on the hanger 23.

[0032] The casting to be cleaned is hung on the hanger 23, the first motor 22 is started to drive the first screw rod 221 to rotate, the hanger 23 is moved to the top of the cleaning tank 1, the electric push rod 25 drives the hanger 23 to move downward to immerse the casting in the cleaning agent in the cleaning tank 1 for cleaning, after the cleaning is completed, the electric push rod 25 drives the hanger 23 to move upward to the top of the cleaning tank 1, then the sliding block 24 drives the hanger 23 to move to the top of the water washing tank 3, the electric push rod 25 drives the hanger 23 to move downward in the water washing tank 3 for water washing work, and the transfer and conveying of the casting are conveniently realized.

[0033] As shown in Figure 2 and Figure 4 , the second motor 4 is horizontally installed on the outer wall close to the bottom end of the water washing tank 3, the first reciprocating screw rod 41 extending into the water washing tank 3 is coaxially fixed to the output end of the second motor 4, the scraper 42 threadedly drivingly matched with the first reciprocating screw rod 41 is externally sleeved on the first reciprocating screw rod 41, the scraper 42 is slidingly matched with the inner bottom wall of the water washing tank 3, and the inner bottom wall of the water washing tank 3 is vertically fixed with a pair of slag discharge ports 32, and the valve is arranged on each of the pair of slag discharge ports 32.

[0034] The second motor 4 is started to drive the first reciprocating screw rod 41 to rotate, the scraper 42 is scraped on the inner bottom wall of the water washing tank 3, the settled impurity particles are scraped into the slag discharge port 32 to be discharged, and the possibility that the impurity particles are bonded on the inner bottom wall of the water washing tank 3 and are difficult to be cleaned is reduced.

[0035] As shown in Figure 2 and Figure 4 , the second reciprocating screw rod 43 is rotatably connected to the inner wall close to the top of the water washing tank 3, the second reciprocating screw rod 43 is coaxial with the first reciprocating screw rod 41, the push plate 44 threadedly drivingly matched with the second reciprocating screw rod 43 is externally sleeved on the outer wall of the second reciprocating screw rod 43, the oil absorbing felt 441 is installed on the outer wall of the push plate 44, the guide rod 45 is fixed to the inner wall close to the top end of the water washing tank 3, the guide rod 45 is arranged along the axial direction of the second reciprocating screw rod 43 and penetrates through the push plate 44, and the push plate 44 is slidingly matched with the outer wall of the guide rod 45; the first transmission assembly 46 is arranged on the end of the first reciprocating screw rod 41 away from the second motor 4 and located outside the water washing tank 3. The first transmission assembly 46 comprises the first pulley 461, the second pulley 462 and the first belt 463; the first pulley 461 is coaxially fixed to the outer wall of the end of the first reciprocating screw rod 41, the second pulley 543 is coaxially fixed to the outer wall of the end of the second reciprocating screw rod 43, the first belt 463 is tightly sleeved outside the first pulley 461 and the second pulley 462, and the first belt 463 drives the first pulley 461 and the second pulley 462 to be linked.

[0036] Under the cooperation of the first pulley 461, the second pulley 462 and the first belt 463, the first reciprocating lead screw 41 drives the second reciprocating lead screw 43 to rotate in the rotating process, so as to drive the push plate 44 to move axially along the second reciprocating lead screw 43. In the reciprocating movement of the push rod, the oil absorption felt 441 can absorb the oil stains floating on the water surface, so as to keep the clean water clean, thereby reducing the replacement frequency of the clean water in the washing tank 3.

[0037] As shown in Figure 1 , Figure 2 and Figure 5 , the water washing tank 3 is fixedly connected with the water receiving box 5 on the two outer walls near the end of the second reciprocating lead screw 43, the filter screen 51 is arranged horizontally on the inner wall of the water receiving box 5, and the through hole 33 is arranged on the side wall of the water washing tank 3, which is higher than the water receiving box 5.

[0038] The push plate 44 drives the upper layer of clean water to flow out of the through hole 33 and into the water receiving box 5 in the reciprocating movement, so as to drive the impurity particles in the upper layer of water to flow out, and the filter screen 51 can filter the impurity particles in the flowing water, so as to realize the reuse of water resources.

[0039] As shown in Figure 1 and Figure 5 , the third reciprocating lead screw 52 is rotatably connected to the inner wall of the water receiving box 5 and located at the top of the filter screen 51, the third reciprocating lead screw 52 is coaxial with the second reciprocating lead screw 43, the cleaning brush 53 is sleeved outside the third reciprocating lead screw 52 and threadedly driven by the third reciprocating lead screw 52, the cleaning brush 53 is in contact with the top surface of the filter screen 51, the cleaning brush 53 is in sliding fit with the inner wall of the water receiving box 5, and the second transmission assembly 54 is arranged at the end of the second reciprocating lead screw 43 and located outside the water receiving box 5. The second transmission assembly 54 includes the third pulley 541, the fourth pulley 542 and the second belt 543, the third pulley 541 is coaxially fixed to the outer wall of the end of the second reciprocating lead screw 43, the fourth pulley 542 is coaxially fixed to the outer wall of the end of the third reciprocating lead screw 52, and the second belt 543 is tightly sleeved outside the third pulley 541 and the fourth pulley 542 to drive the third pulley 541 and the fourth pulley 542 to move together.

[0040] Under the cooperation of the third pulley 541, the fourth pulley 542 and the second belt 543, the second reciprocating lead screw 43 drives the third reciprocating lead screw 52 to rotate in the rotating process, so as to drive the cleaning brush 53 to move axially along the third reciprocating lead screw 52, thereby cleaning the filter screen 51 and reducing the possibility of clogging the mesh of the filter screen 51.

[0041] A new energy vehicle built-in battery box, as shown in Figure 6As shown, a new energy vehicle built-in battery box production process is prepared, including die casting box body 6; The detachable installation of the box body 6 top is die casting box cover 61; A plurality of through holes 62 for passing through the line are provided on the side wall of the box body 6; The top surface of the box cover 61 is provided with a plurality of heat dissipation fins 63; The through hole 62 is convenient for passing through the line, and the heat dissipation fin 63 is provided to improve the heat dissipation performance of the battery box.

[0042] Working principle: when the cleaning work of the casting is carried out, the casting is hung on the hanger 23, the first motor 22 is started to drive the first screw rod 221 to rotate, the sliding block 24 is driven to move the hanger 23 to the top of the cleaning tank 1, the electric push rod 25 is started to drive the hanger 23 to move down, so that the casting is immersed in the cleaning agent in the cleaning tank 1, then the first ultrasonic generator 11 is started to clean the casting with ultrasonic cleaning agent, after cleaning, the electric push rod 25 drives the hanger 23 to move up to the top of the cleaning tank 1, then the first motor 22 drives the sliding block 24 and the hanger 23 to move to the top of the water washing tank 3, and then the electric push rod 25 drives the hanger 23 to move down to immerse in the water, and the second ultrasonic generator 31 is started to clean the casting with ultrasonic water; During the long time use of the water washing tank 3, the second motor 4 is started to drive the first reciprocating screw rod 41 to rotate, so that the scraper 42 scrapes the bottom wall of the water washing tank 3, and the impurities deposited in the water washing tank 3 are scraped to the slag discharge port 32 for discharge. The first reciprocating screw rod 41 rotates and drives the second reciprocating screw rod 43 to rotate through the first transmission assembly 46, so that the push plate 44 moves axially along the second reciprocating screw rod 43. During the reciprocating movement of the push rod, the push plate 44 pushes the upper layer of water to the water receiving box 5 through the through port 33, so that the impurity particles in the upper layer of water are discharged, the oil absorption felt 441 can absorb the oil stains floating on the water surface, and the filter screen 51 in the water receiving box 5 can filter the discharged water to remove the impurities in the water for recycling of water resources; During the movement of the push plate 44 driven by the second reciprocating screw rod 43, the second reciprocating screw rod 43 drives the third reciprocating screw rod 52 to rotate through the second transmission assembly 54, so that the cleaning brush 53 moves to clean the filter screen 51, reduces the possibility that the mesh holes of the filter screen 51 are blocked by impurities, and ensures the water permeability of the filter screen 51.

[0043] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A manufacturing process for a built-in battery box in a new energy vehicle, characterized in that: The process includes the following specific steps: S1: The product is die-cast using a cold chamber die-casting machine and die-casting mold; S2: The formed die castings are subjected to a series of processes, including rinsing the slag from the gate, grinding the gate, shot blasting, and deburring, to perform surface treatment on the castings. S3: Use an ultrasonic cleaning device to perform ultrasonic cleaning on multiple castings simultaneously, and perform chromating treatment on the castings after cleaning. S4: After the chromating process, the casting is first powder coated. After the powder coating process is completed, the workpiece is then subjected to CNC four-axis drilling and tapping.

2. The manufacturing process of a built-in battery box for a new energy vehicle according to claim 1, characterized in that: The ultrasonic cleaning device includes a cleaning tank (1) and a feeding mechanism (2); a first ultrasonic generator (11) is installed in the cleaning tank (1), and a water washing tank (3) is provided on the outside of one side of the cleaning tank (1); a second ultrasonic generator (31) is installed in the water washing tank (3); the feeding mechanism (2) is located on the top of the cleaning tank (1) and the water washing tank (3), and the feeding mechanism (2) can hang and transport workpieces into the cleaning tank (1) and the water washing tank (3).

3. The manufacturing process of a built-in battery box for a new energy vehicle according to claim 2, characterized in that: The feeding mechanism (2) includes a frame (21), a first motor (22), and a hanger (23); the frame (21) is set on the top of the washing tank (1) and the water washing tank (3), and a sliding groove (211) is provided on the top wall of the frame (21); the first motor (22) is installed on the outer wall of one end of the frame (21), and a first lead screw (221) extending into the sliding groove (211) is coaxially fixed to the output end of the first motor (22); a slider (24) is sleeved on the outside of the first lead screw (221) and threadedly engaged with the first lead screw (221); the slider (24) slides with the inner wall of the sliding groove (211), and an electric push rod (25) is vertically arranged on the slider (24); the hanger (23) is installed on the output end of the electric push rod (25), and the hanger (23) is located at the bottom of the slider (24).

4. The manufacturing process of a built-in battery box for a new energy vehicle according to claim 2, characterized in that: A slag discharge port (32) is provided on the inner wall of the bottom end of the washing tank (3); a valve is provided on the slag discharge port (32); a second motor (4) is installed on the outer wall of the washing tank (3); a first reciprocating screw (41) extending into the washing tank (3) is coaxially fixed to the output end of the second motor (4); a scraper (42) is sleeved on the outside of the first reciprocating screw (41) and threadedly engaged with the first reciprocating screw (41); the scraper (42) slides in cooperation with the bottom wall of the washing tank (3).

5. The manufacturing process of a built-in battery box for a new energy vehicle according to claim 4, characterized in that: The washing tank (3) has a second reciprocating screw (43) rotatably connected to the inner wall near the top, which is coaxial with the first reciprocating screw (41). The second reciprocating screw (43) is fitted with a push plate (44) that is threadedly engaged with the second reciprocating screw (43). The inner wall of the washing tank (3) is fixedly connected with a guide rod (45) that passes through the push plate (44). The push plate (44) and the guide rod (45) are slidably engaged. An oil-absorbing felt (441) is installed on the outer wall of the push plate (44). The end of the first reciprocating screw (41) is provided with a first transmission assembly (46) that can drive the second reciprocating screw (43) to rotate.

6. The manufacturing process of a built-in battery box for a new energy vehicle according to claim 5, characterized in that: The first transmission assembly (46) includes a first pulley (461), a second pulley (462), and a first belt (463); the first pulley (461) is coaxially fixed to the outer wall of the end of the first reciprocating screw (41); the second pulley (462) is coaxially fixed to the outer wall of the end of the second reciprocating screw (43); and the first belt (463) is sleeved on the outside of the first pulley (461) and the second pulley (462).

7. The manufacturing process of a built-in battery box for a new energy vehicle according to claim 5, characterized in that: A water receiving box (5) is provided on the outer wall of the washing tank (3) near the end of the second reciprocating screw (43); a filter screen (51) is installed on the inner wall of the water receiving box (5); an opening (33) is provided on the outer wall of the washing tank (3) on the side where the water receiving box (5) is located, located at the top of the water receiving box (5); a third reciprocating screw (52) located at the top of the filter screen (51) is rotatably connected to the inner wall of the water receiving box (5); the third reciprocating screw (52) is coaxial with the second reciprocating screw (43), and a cleaning brush (53) is sleeved on the outside of the third reciprocating screw (52) and contacts the top surface of the filter screen (51); the cleaning brush (53) is threadedly driven to the third reciprocating screw (52), and the cleaning brush (53) is slidably engaged with the inner wall of the water receiving box (5); a second transmission assembly (54) is provided at the end of the second reciprocating screw (43) that can drive the third reciprocating screw (52) to rotate.

8. The manufacturing process of a built-in battery box for a new energy vehicle according to claim 7, characterized in that: The second transmission assembly (54) includes a third pulley (541), a fourth pulley (542), and a second belt (543); the third pulley (541) is coaxially fixed to the outer wall of the end of the second reciprocating screw (43); the fourth pulley (542) is coaxially fixed to the outer wall of the end of the third reciprocating screw (52); and the second belt (543) is sleeved on the outside of the third pulley (541) and the fourth pulley (542).

9. The manufacturing process of a built-in battery box for a new energy vehicle according to claim 2, characterized in that: The inner wall of the cleaning tank (1) is provided with a first electric heating tube (12); the inner wall of the water washing tank (3) is provided with a second electric heating tube (34).

10. A built-in battery box for a new energy vehicle, manufactured using the production process of any one of claims 1-9, characterized in that: Includes a box body (6); a box cover (61) is detachably installed on the box body (6), and multiple through holes (62) for wiring are opened on the side wall of the box body (6); heat dissipation fins (63) are provided on the box cover (61).

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