Manufacturing method of electronic control lower box of new energy vehicle

Abstract

The present application provides a method for manufacturing the lower box body of an electric control of a new energy vehicle. The above-mentioned method for manufacturing the lower box body of an electric control of a new energy vehicle comprises: processing a die-casting by a CNC machine tool to form the lower box body of the electric control; cleaning the lower box body of the electric control by an automatic cleaning device; performing a water leak test on the electrolyte cavity of the electrolyte container of the lower box body of the electric control by a water leak test device; if the water leak test fails, repairing the electrolyte container by a leak repair device; drying the lower box body by a drying device; performing a gas leak test on the electric control installation cavity and the electrolyte cavity of the shell of the lower box body of the electric control by a gas leak test device; if the gas leak test passes, assembling the lower box body of the electric control. In this way, the delivery efficiency of the lower box body of the electric control is improved, and the premium rate and return rate of the lower box body of the electric control are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of an electric control lower box, and in particular to a method for manufacturing an electric control lower box of a new energy vehicle. Background Art

[0002] The reducer of new energy vehicles includes an electronic control lower box, which includes an outer shell and an electrolyte container. The electrolyte container is arranged in the outer shell. The electrolyte container is formed with an electrolyte cavity. The electrolyte cavity is used to accommodate electrolyte. The upper surface of the electrolyte container is formed with an upper opening. The upper opening is connected to the electrolyte cavity. The upper opening needs to be sealed with a cover when the reducer is installed. The two opposite walls of the outer shell are formed with a liquid inlet and a liquid outlet. The liquid inlet, electrolyte cavity and liquid outlet are connected in sequence.

[0003] An electrical control installation cavity is formed between the electrolyte container and the housing. The electrical control installation cavity is used to install electrical control components. The upper surface of the housing is formed with a first upper opening and a second upper opening spaced apart from each other. Both the first upper opening and the second upper opening are connected to the electrical control installation cavity. The upper opening of the electrolyte container is located within the first upper opening. The first upper opening and the second upper opening need to be sealed with a cover when the reducer is installed. The lower surface of the housing is formed with a lower opening. The lower openings are respectively connected to the electrical control installation cavity. The lower openings need to be sealed with a cover when the reducer is installed. Because the electrolyte cavity is used to accommodate electrolyte and the electrical control installation cavity is used to install electrical control components, both the electrolyte cavity and the electrical control installation cavity have high airtightness requirements.

[0004] Due to the large size of the lower control housing, it is typically first produced as a die-cast part, which is then CNC-machined. However, due to defects such as cracks, cold shuts, cold material, shrinkage, and sand holes in the die-cast part, the CNC-machined lower control housing can leak, resulting in a high scrap rate.

[0005] In order to reduce the scrap rate of the lower cabinet of the electric control, in the traditional production process of the lower cabinet of the electric control, the die-casting is firstly patched as a whole, that is, the die-casting is completely immersed in the overall patching line for patching, and then the die-casting is CNC machined to form the lower cabinet of the electric control. The lower cabinet of the electric control is then cleaned and dried, and then the electrolyte cavity and the electric control installation cavity of the lower cabinet of the electric control are tested for air leaks, that is, the air tightness of the electrolyte cavity and the electric control installation cavity of the lower cabinet of the electric control is tested by an airtightness tester. If the test is qualified, the lower cabinet of the electric control is assembled; if the test is unqualified, the lower cabinet of the electric control is patched as a whole. However, the traditional production process of the lower cabinet of the electric control has the following technical problems:

[0006] 1. Since the overall leak repair line occupies a large space, it can only be set up in an independent workshop, that is, the overall leak repair line and the leak test are carried out in different workshops. If the gas leak test fails, the electric control lower box needs to be moved from the leak test workshop to the overall leak repair line workshop, resulting in a long time spent on moving the electric control lower box to the overall leak repair line. In addition, since the die-casting or electric control lower box is completely immersed in the overall leak repair, the holes of the die-casting or electric control lower box will be blocked by the leak repair liquid. After the overall leak repair is completed, the holes need to be cleaned, which reduces the delivery efficiency of the electric control lower box.

[0007] 2. When the gas leak test fails, the lower box of the electric control needs to be moved to the overall leak repair line. The lower box of the electric control is more susceptible to bumps during transportation, which increases the scrap rate and repair rate of the lower box of the electric control. Summary of the Invention

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for manufacturing the electric control lower box of a new energy vehicle, which improves delivery efficiency and reduces the scrap rate and repair rate of the electric control lower box.

[0009] The object of the present invention is achieved through the following technical solutions:

[0010] A method for manufacturing an electric control lower box for a new energy vehicle, wherein the electric control lower box is manufactured by an electric control lower box production line, wherein the electric control lower box production line includes a numerical control machine tool, an automatic cleaning device, a water leak test device, a leak repair device, a drying device, and an air leak test device, which are sequentially arranged. The method for manufacturing the electric control lower box for a new energy vehicle includes:

[0011] Processing the die casting by the CNC machine tool to form the electric control lower box;

[0012] Cleaning the electrically controlled lower box by the automatic cleaning device;

[0013] Performing a water leak test on the electrolyte cavity of the electrolyte container of the lower box of the electric control unit by using the water leak test device;

[0014] If the water leak test fails, the electrolyte container is repaired by the leak repair device;

[0015] Performing a drying operation on the electrically controlled lower box by the drying device;

[0016] Performing a gas leak test on the electric control installation cavity and the electrolyte cavity of the housing of the electric control lower box by using the gas leak test device;

[0017] If the gas leak test is qualified, the electric control lower box is assembled.

[0018] In one embodiment, if the water leak test fails, the step of repairing the electrolyte container by the leak repair device includes:

[0019] If the water leak test fails, the electrically controlled lower box is moved into the leak repair device;

[0020] Blow dry the electronic control lower box with an air gun;

[0021] The electrolyte container is leak-proofed by the leak-proof device.

[0022] In one embodiment, if the water leak test fails, after the step of repairing the electrolyte container by the leak repair device, and before the step of drying the electronic control lower box by the drying device, the method for manufacturing the electronic control lower box of the new energy vehicle further includes: cleaning the leak repairing liquid in the electronic control lower box.

[0023] In one embodiment, the step of cleaning the leakage-sealing fluid in the electrolyte chamber includes:

[0024] Immerse the electronically controlled lower box in a clean water tank;

[0025] The electrically controlled lower box is reciprocated in the clean water so that the leak-proof liquid in the electrically controlled lower box is dissolved in the clean water.

[0026] In one embodiment, in the step of reciprocating the electrically controlled lower box in clean water, the electrically controlled lower box is swung and shaken.

[0027] In one embodiment, the water leak detection device comprises:

[0028] A water leak test bracket is located between the automatic cleaning device and the leak repair device;

[0029] A water tank is placed on the water leak test bracket;

[0030] A lifting drive mechanism is installed on the water leak test bracket;

[0031] a clamping and sealing mechanism, located in the water cylinder and connected to the power output end of the lifting drive mechanism, the clamping and sealing mechanism being used to clamp the electrically controlled lower box and further used to seal the electrolyte chamber, the clamping and sealing mechanism being formed with an air intake channel, the air intake channel being used to communicate with the electrolyte chamber; and

[0032] An inflation mechanism, wherein an output end of the inflation mechanism is connected to the air inlet channel.

[0033] In one embodiment, the clamping and sealing mechanism comprises:

[0034] A bearing seat is rotatably connected to the power output end of the lifting drive mechanism, and the bearing seat is formed with a placement groove, and the placement groove is used to accommodate the electric control lower box;

[0035] A pressure rod, wherein a first end of the pressure rod is movably connected to the bearing seat, and a second end of the pressure rod is detachably connected to the bearing seat so that the pressure rod can be opened and closed in the placement slot;

[0036] A downward pressing drive assembly is mounted on the pressing rod;

[0037] a first sealing plate assembly fixedly connected to the power output end of the downward pressure drive assembly, the first sealing plate assembly being used to press the electronic control lower box into the placement groove, and the first sealing plate assembly being further used to seal the upper opening of the electrolyte container;

[0038] a sealed air inlet assembly mounted on the bearing seat, the sealed air inlet assembly being used to seal the liquid inlet of the housing, the air inlet passage being formed in the sealed air inlet assembly; and

[0039] A sealing assembly is mounted on the bearing seat, and the sealing assembly and the sealed air inlet assembly extend to two opposite sides of the bearing seat respectively. The sealing assembly is used to seal the liquid outlet of the shell.

[0040] In one embodiment, the leak repair device comprises:

[0041] A leak repairing rack is located between the water leak testing device and the drying device, and the leak repairing rack forms a leak repairing space;

[0042] A carrying plate is located in the leak repair space and is horizontally mounted on the leak repair frame, and the carrying plate is used to place the lower box of the electric control;

[0043] A sealed liquid inlet assembly is mounted on the leak repair frame, the sealed liquid inlet assembly is used to seal the liquid inlet of the housing, and the sealed liquid inlet assembly is further formed with a liquid inlet channel, the liquid inlet channel is used to communicate with the electrolyte chamber;

[0044] A plugging assembly is mounted on the leak repair frame, wherein the plugging assembly and the sealing liquid inlet assembly are respectively located on two opposite sides of the carrier plate, and the plugging assembly is used to seal the liquid outlet of the housing;

[0045] a second sealing plate assembly, movably connected to the leak repair frame in an upper and lower manner, and located on the upper side of the carrier plate, the second sealing plate assembly being used to seal the upper opening of the electrolyte container; and

[0046] A liquid filling component is arranged adjacent to the leak-proof frame, and the output end of the liquid filling component is connected to the liquid inlet channel. The liquid filling component is used to press the leak-proof liquid into the liquid inlet channel, the electrolyte cavity and the leakage gap of the electrolyte accommodating component in sequence.

[0047] In one embodiment, the leak-sealing device further includes a guide assembly, wherein the guide assembly is connected to the leak-sealing frame, and the second sealing plate assembly is connected to the guide assembly.

[0048] In one embodiment, the gas leak test device comprises:

[0049] A gas leak test rack is arranged adjacent to the drying device, and the gas leak test rack forms a leak test space;

[0050] A sealing bottom plate is located in the leak test space and is horizontally fixedly connected to the gas leak test frame, the sealing bottom plate is used to place the electric control lower box, and the sealing bottom plate is used to seal the lower opening of the shell;

[0051] A sealing top plate mechanism is movably connected to the gas leak test frame in an upper and lower manner. The sealing top plate mechanism is arranged opposite to the sealing bottom plate and is used to seal the first upper opening and the second upper opening of the housing.

[0052] a peripheral wall sealing mechanism, mounted on the gas leak test frame, the peripheral wall sealing mechanism being arranged along the circumference of the sealing bottom plate and being used for sealing an opening on the peripheral wall of the housing; and

[0053] An airtightness tester is provided adjacent to the sealing bottom plate, and is used to detect whether there is a leakage problem in the electrolyte cavity and the electronic control installation cavity.

[0054] Compared with the prior art, the present invention has at least the following advantages:

[0055] 1. Since the leak repair device is adjacent to the water leak test device, after the water leak test is completed, the time required to move the electric control lower box in the water leak test device to the leak repair device is shortened, thereby improving the delivery efficiency of the electric control lower box;

[0056] 2. Since the leak repair device only repairs the electrolyte cavity, that is, the leak repair device performs local leak repair, it avoids the leak repair liquid from soaking the entire electronic control lower box, thereby avoiding the tooth holes of the electronic control lower box from being blocked, saving the time of cleaning the tooth holes, and improving the delivery efficiency of the electronic control lower box.

[0057] 3. Since the leak repair device and the water leak test device are arranged adjacent to each other, the distance for moving the lower box of the electric control from the water leak test device to the leak repair device is shorter, which reduces the chance of the lower box of the electric control being bumped, and reduces the premium rate and repair rate of the lower box of the electric control.

[0058] 4. Since the drying device and the leak repairing device are arranged adjacent to each other, after the leak repairing is completed, the time for moving the electric control lower box in the leak repairing device to the drying device is shortened, thereby improving the delivery efficiency of the electric control lower box. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0060] Figure 1 This is a structural diagram of the electric control lower box according to an embodiment;

[0061] Figure 2 for Figure 1 Another structural diagram of the electric control lower box shown;

[0062] Figure 3 for Figure 1 Another structural diagram of the electric control lower box shown;

[0063] Figure 4 This is a flowchart of a method for manufacturing an electronic control lower box of a new energy vehicle according to an embodiment;

[0064] Figure 5 This is a structural schematic diagram of a water leak test device for an electrically controlled lower box production line according to an embodiment;

[0065] Figure 6 for Figure 5 The schematic diagram of the partial structure of the water leak test device of the electric control lower box production line shown;

[0066] Figure 7 for Figure 5 Another partial structural diagram of the water leak test device of the electrically controlled lower box production line shown;

[0067] Figure 8 This is a structural schematic diagram of a leak repair device for an electrically controlled lower cabinet production line according to an embodiment;

[0068] Figure 9 The figure is a structural diagram of a gas leakage test device for an electrically controlled lower cabinet production line according to an embodiment. DETAILED DESCRIPTION

[0069] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0070] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0071] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0072] The present application provides a method for manufacturing an electric control lower box of a new energy vehicle, wherein the electric control lower box is manufactured through an electric control lower box production line, and the electric control lower box production line includes a CNC machine tool, an automatic cleaning device, a water leak test device, a leak repair device, a drying device and an air leak test device which are arranged in sequence. The method for manufacturing the electric control lower box of a new energy vehicle includes: processing a die-casting by a CNC machine tool to form the electric control lower box; cleaning the electric control lower box by an automatic cleaning device; performing a water leak test on the electrolyte cavity of the electrolyte container of the electric control lower box by a water leak test device; if the water leak test fails, repairing the electrolyte container by a leak repair device; drying the electric control lower box by a drying device; performing an air leak test on the electric control installation cavity and the electrolyte cavity of the shell of the electric control lower box by a air leak test device; if the air leak test passes, assembling the electric control lower box.

[0073] The above-mentioned method for manufacturing the lower electric control box of a new energy vehicle has the following advantages: since the leak repair device is arranged adjacent to the water leak test device, after the water leak test is completed, the time required to move the lower electric control box in the water leak test device to the leak repair device is shortened, thereby improving the delivery efficiency of the lower electric control box; since the leak repair device only repairs the electrolyte cavity, that is, the leak repair device performs local leak repair, the leak repair liquid is prevented from soaking the entire lower electric control box, thereby preventing the tooth holes of the lower electric control box from being clogged, saving the time required to clean the tooth holes, thereby improving the delivery efficiency of the lower electric control box. Moreover, since the leak repair device is arranged adjacent to the water leak test device, the distance required to move the lower electric control box from the water leak test device to the leak repair device is shorter, reducing the chance of the lower electric control box being bumped, and reducing the premium rate and return rate of the lower electric control box. In addition, since the drying device is arranged adjacent to the leak repair device, after the leak repair is completed, the time required to move the lower electric control box in the leak repair device to the drying device is shortened, thereby improving the delivery efficiency of the lower electric control box.

[0074] To better understand the technical solutions and beneficial effects of the present application, the present application is further described in detail below with reference to specific embodiments:

[0075] like Figures 1 to 3 As shown, the electronic control lower box 10 of one embodiment includes a shell 100 and an electrolyte accommodating part 200. The electrolyte accommodating part 200 is arranged in the shell 100. The electrolyte accommodating part 200 is formed with an electrolyte cavity 201. The electrolyte cavity 201 is used to accommodate electrolyte. The upper surface of the electrolyte accommodating part 200 is formed with an upper opening 202. The upper opening 202 is connected to the electrolyte cavity 201. The upper opening 202 needs to be sealed with a cover when the reducer is installed. The two opposite walls of the shell 100 are formed with a liquid inlet 101 and a liquid outlet 102. The liquid inlet 101, the electrolyte cavity 201 and the liquid outlet 102 are connected in sequence.

[0076] like Figures 1 to 3 As shown, an electric control installation cavity 103 is formed between the electrolyte container 200 and the shell 100, and the electric control installation cavity 103 is used to install electric control components. The upper surface of the shell 100 is formed with a first upper opening 104 and a second upper opening 105 arranged at intervals. The first upper opening 104 and the second upper opening 105 are both connected to the electric control installation cavity 103. The upper opening 202 of the electrolyte container 200 is located in the first upper opening 104. The first upper opening 104 and the second upper opening 105 need to be sealed with a cover when the reducer is installed. The lower surface of the shell 100 is formed with a lower opening 106. The lower openings 106 are respectively connected to the electric control installation cavity 103. The lower openings 106 need to be sealed with a cover when the reducer is installed. Since the electrolyte chamber 201 is used to contain electrolyte and the electronic control installation chamber 103 is used to install electronic control components, both the electrolyte chamber 201 and the electronic control installation chamber 103 have high airtightness requirements.

[0077] like Figures 1 to 4 As shown, in one embodiment, a method for manufacturing an electric control lower box 10 for a new energy vehicle is provided, wherein the electric control lower box 10 is manufactured by an electric control lower box production line. The electric control lower box production line includes a CNC machine tool, an automatic cleaning device, a water leak test device 300, a leak repair device 400, a drying device, and a gas leak test device 500, which are arranged in sequence. The CNC machine tool, the automatic cleaning device, the water leak test device 300, the leak repair device 400, the drying device, and the gas leak test device 500 are all arranged in the same workshop. The method for manufacturing the electric control lower box 10 for a new energy vehicle includes:

[0078] S101: Processing the die casting by a CNC machine tool to form the electric control lower box 10.

[0079] In this embodiment, since the die-casting process cannot form a product that meets the requirements of the drawings, the die-casting is processed by a CNC machine tool to produce the electric control lower box 10 that meets the requirements of the drawings.

[0080] S103: Clean the electric control lower box 10 by an automatic cleaning device.

[0081] In this embodiment, the CNC machine tool will spray out coolant and generate processing debris during the processing, so that the surface of the electric control lower box 10 obtained by the CNC machine tool is attached with coolant and processing debris. The electric control lower box 10 is cleaned by an automatic cleaning device to remove the coolant and debris on the surface of the electric control lower box 10.

[0082] S105 : Performing a water leak test on the electrolyte chamber 201 of the electrolyte container 200 of the lower electrically controlled box 10 through the water leak test device 300 .

[0083] In this embodiment, the electrolyte chamber 201 is used to hold the electrolyte of the battery. The electrolyte chamber 201 requires a higher airtightness requirement to avoid leakage of the electrolyte. Since the leakage point of the electrically controlled lower housing 10 is generally at the electrolyte container 200, this step only performs a water leak test on the electrolyte chamber 201. First, the electrolyte chamber 201 is sealed by the water leak test device 300, and then the electrolyte container 200 is submerged in water by the water leak test device 300. Then, the electrolyte chamber 201 is filled with high-pressure gas by the water leak test device 300. Finally, the bubbles in the water are observed to determine whether there is a leak point in the electrolyte chamber 201. When bubbles continue to appear in the water, there is a leak in the electrolyte chamber 201. Since the water leak test is performed in water, there is no need to dry the electrically controlled lower housing 10 before the water leak test, which improves the efficiency of the water leak test and thereby improves the shipping efficiency of the electrically controlled lower housing 10.

[0084] S107: If the water leak test fails, the electrolyte container 200 of the lower electric control box 10 is repaired by the leak repair device 400.

[0085] In this embodiment, if the water leak test fails, that is, there is a leak in the electrolyte container 200, the electrolyte container 200 is repaired by the leak repair device 400, that is, the lower electric control box 10 is partially repaired by the leak repair device 400 so that the leak repair liquid fills the leak gap of the electrolyte container 200. Specifically, after the water leak test is completed, the lower electric control box 10 is placed on the leak repair device 400, and then the lower electric control box 10 is blown dry with an air gun. Then, the electrolyte container 200 of the lower electric control box 10 is repaired by the leak repair device 400, that is, the leak repair liquid is pressed into the leak gap of the electrolyte container 200 by high-pressure gas to block the leak point of the electrolyte container 200. Because the leak repair device 400 is positioned adjacent to the water leak test device 300, after the water leak test is completed, the time required to move the lower electric control box 10 within the water leak test device 300 to the leak repair device 400 is shortened, thereby improving the shipping efficiency of the lower electric control box 10. Furthermore, because the leak repair device 400 is positioned adjacent to the water leak test device 300, the distance required to move the lower electric control box 10 from the water leak test device 300 to the leak repair device 400 is shortened, reducing the chance of the lower electric control box 10 being bumped and damaged, thereby lowering the insurance premium rate and repair rate of the lower electric control box 10.

[0086] S109: Drying the electrically controlled lower box 10 through a drying device.

[0087] In this embodiment, the lower electric control box 10 is dried by a drying device to solidify the sealing liquid in the lower electric control box 10 , thereby sealing the leakage point of the electrolyte container 200 .

[0088] S111 : Performing a gas leak test on the electric control installation cavity 103 and the electrolyte cavity 201 of the housing 100 of the electric control lower box 10 by using the gas leak test device 500 .

[0089] In this embodiment, since the water leak test is performed by observing whether there are bubbles on the water surface to determine whether there is a leak, if two inner cavities are tested at the same time, it will be impossible to observe which inner cavity is leaking, so that the water leak test device 300 cannot perform water leak tests on the two inner cavities. In order to improve the detection efficiency, the electrolyte cavity and the electrically controlled installation cavity of the electrically controlled lower box 10 are subjected to an air leak test by the air leak test device 500. Specifically, the electrolyte cavity and the electrically controlled installation cavity of the electrically controlled lower box 10 are sealed by the sealing structure of the air leak test device 500, and then the electrolyte cavity and the installation cavity are tested by the airtightness instrument 550 of the air leak test device 500 to determine whether there is a leakage problem in the electrolyte cavity and the installation cavity. It can be understood that the airtightness instrument 550 is an airtightness leak detector, and the leak detection of the airtightness leak detector is a conventional technology and will not be described here.

[0090] S113: If the gas leakage test is qualified, the electric control lower box 10 is assembled.

[0091] In this embodiment, if the gas leak test is qualified, it indicates that there are no leakage points in the electrolyte chamber and the electronic control installation chamber of the electronic control lower box 10, that is, the air tightness of the electronic control lower box 10 meets the requirements, so the electronic control lower box 10 is assembled.

[0092] In the above-mentioned method for manufacturing the lower electric control box 10 of a new energy vehicle, since the leak repair device 400 is disposed adjacent to the water leak test device 300, after the water leak test is completed, the time required to move the lower electric control box 10 in the water leak test device 300 to the leak repair device 400 is shortened, thereby improving the shipping efficiency of the lower electric control box 10. Since the leak repair device 400 only repairs the electrolyte cavity, that is, the leak repair device 400 performs local leak repair, the leak repair liquid is prevented from soaking the entire lower electric control box 10, thereby preventing the tooth holes of the lower electric control box 10 from being clogged, saving the time required to clean the tooth holes, and improving the shipping efficiency of the lower electric control box 10. Moreover, since the leak repair device 400 is disposed adjacent to the water leak test device 300, the distance required to move the lower electric control box 10 from the water leak test device 300 to the leak repair device 400 is shortened, thereby reducing the probability of the lower electric control box 10 being bumped, and reducing the insurance premium rate and the repair rate of the lower electric control box 10. In addition, since the drying device is arranged adjacent to the leak repairing device 400, after the leak repairing is completed, the time to move the electrically controlled lower box 10 in the leak repairing device 400 to the drying device is shortened, thereby improving the shipping efficiency of the electrically controlled lower box 10.

[0093] In one embodiment, if the water leak test fails, the steps of repairing the electrolyte container 200 by the leak repair device 400 include: if the water leak test fails, moving the electronic control lower box 10 into the leak repair device 400; blowing the electronic control lower box 10 dry with an air gun to avoid water diluting the leak repair liquid, thereby avoiding water affecting the leak repair effect; repairing the electrolyte container 200 by the leak repair device 400 to avoid the electrolyte chamber 201 from leaking after the reducer is assembled.

[0094] In one embodiment, if the water leak test fails, after the step of repairing the electrolyte container 200 by the leak repair device 400, and before the step of drying the electronic control lower box 10 by the drying device, the manufacturing method of the electronic control lower box 10 of the new energy vehicle also includes: cleaning the leak repairing liquid in the electronic control lower box 10.

[0095] In this embodiment, after the leak is repaired by the leak-sealing device 400, the inner wall of the electrolyte chamber 201, the liquid inlet 101 and the liquid outlet 102 will be adhered to the leak-sealing liquid, so that the electrolyte chamber 201 is at risk of being blocked, and the leak-sealing liquid will occupy the space of the electrolyte in the electrolyte chamber 201, so that the volume of the electrolyte chamber 201 is reduced. Therefore, it is necessary to clean the non-leaking liquid in the electronically controlled box 10, specifically the leak-sealing liquid in the liquid inlet 101, the electrolyte chamber 201 and the liquid outlet 102, to avoid blockage of the liquid inlet 101, the electrolyte chamber 201 and the liquid outlet 102, and to avoid a decrease in the volume of the electrolyte chamber 201.

[0096] In one embodiment, the step of cleaning the sealing liquid in the electrolyte chamber 201 includes: immersing the lower electronic control box 10 in the clean water tank 320; moving the lower electronic control box 10 back and forth in the clean water so that the sealing liquid in the lower electronic control box 10 is dissolved in the clean water, thereby achieving the purpose of clearing the sealing liquid in the electrolyte chamber 201, the liquid inlet 101 and the liquid outlet 102.

[0097] It can be understood that when the electrolyte container 200 is repaired by the leak-sealing device 400, since the leakage gap is small, high-pressure gas is required to force the leak-sealing liquid into the leakage gap of the electrolyte container 200. Therefore, when the electrically controlled box body 10 reciprocates in clean water, since the water pressure of the clean water when the electrically controlled box body 10 reciprocates is small, the leak-sealing liquid in the leakage gap cannot be discharged and merged into the clean water, that is, this step only merges the leak-sealing liquid outside the leakage gap into the water, that is, the leak-sealing liquid in the electrolyte chamber 201, the liquid inlet 101 and the liquid outlet 102 is merged into the clean water.

[0098] In one embodiment, during the step of reciprocating the electrically controlled lower housing 10 in the clean water, the electrically controlled lower housing 10 is swung and shaken. In this embodiment, by swinging and shaking the electrically controlled lower housing 10, the clean water flushes the electrolyte in the liquid inlet 101, the electrolyte chamber 201, and the liquid outlet 102, so that the sealing liquid in the liquid inlet 101, the electrolyte chamber 201, and the liquid outlet 102 is dissolved in the clean water, thereby achieving the purpose of clearing the sealing liquid in the liquid inlet 101, the electrolyte chamber 201, and the liquid outlet 102.

[0099] In one embodiment, in the step of performing a water leak test on the electrolyte chamber 201 of the electrolyte container 200 of the electrically controlled lower box 10 through the water leak test device 300, the air pressure introduced into the electrolyte chamber 201 is above 0.2 MPa, and the pressure is maintained for more than 1 minute to ensure that the gas passes through the leakage gap of the electrolyte container 200, thereby allowing the gas to leak out through the leakage gap and generate bubbles.

[0100] In one embodiment, in the step of performing a water leak test on the electrolyte chamber 201 of the electrolyte container 200 of the lower electrically controlled box 10 using the water leak test device 300, the pressure of the electrolyte introduced is 0.5 MPa, and the pressure holding time is 1 minute.

[0101] In one embodiment, the electronically controlled lower box production line includes a CNC machine tool, an automatic cleaning device, a water leak test device 300, a leak repair device 400, a drying device and a gas leak test device 500 arranged in sequence. The CNC machine tool, the automatic cleaning device, the water leak test device 300, the leak repair device 400, the drying device and the gas leak test device 500 are all arranged in the same workshop.

[0102] like Figure 5 and Figure 6 As shown, in one embodiment, the water leak test device 300 includes a water leak test bracket 310, a water cylinder 320, a lifting drive mechanism 330, a clamping and sealing mechanism 340, and an inflation mechanism. The water leak test bracket 310 is located between the automatic cleaning device and the leak repair device 400. The water cylinder 320 is placed on the water leak test bracket 310. Water is contained in the water cylinder 320. The lifting drive mechanism 330 is installed on the water leak test bracket 310. The clamping and sealing mechanism 340 is located on the water cylinder 320. The clamping and sealing mechanism 340 is internally connected to the power output end of the lifting drive mechanism 330, and is used to clamp the lower box 10 of the electronic control. The clamping and sealing mechanism 340 is also used to seal the electrolyte chamber 201. The clamping and sealing mechanism 340 is formed with an air inlet channel 3401, and the air inlet channel 3401 is used to communicate with the electrolyte chamber 201. The output end of the inflation mechanism is connected to the air inlet channel 3401, and the inflation mechanism is used to introduce high-pressure gas into the electrolyte chamber 201 through the air inlet channel 3401.

[0103] like Figure 5 and Figure 6 As shown, in this embodiment, when the water leak test device 300 performs a water leak test, the electrically controlled lower housing 10 is first clamped on the clamping and sealing mechanism 340, and the clamping and sealing mechanism 340 seals the electrolyte chamber 201. At this time, the clamping and sealing mechanism 340 is located above the water surface. Then, the lifting drive mechanism 330 drives the clamping and sealing mechanism 340 and the electrically controlled lower housing 10 to move downward so that the electrically controlled lower housing 10 is completely immersed in water. Then, the inflation mechanism fills the electrolyte chamber 201 with 0. High-pressure gas of more than 2MPa is used, and the pressure is maintained for more than 1 minute. If the electrolyte container 200 has a leakage gap, the gas will be discharged to the outside through the leakage gap and generate bubbles. Then, whether the electrolyte chamber 201 is leaking is judged by observing the bubbles in the water. After the detection is completed, the lifting drive mechanism 330 drives the clamping and sealing mechanism 340 and the electrically controlled lower box body 10 to move upward, so that the clamping and sealing mechanism 340 and the electrically controlled lower box body 10 are above the water surface, and finally the electrically controlled lower box body 10 is removed from the clamping and sealing mechanism 340.

[0104] In one embodiment, the step of performing a water leak test on the electrolyte chamber 201 of the electrolyte container 200 of the lower electrically controlled box 10 through the water leak test device 300 includes: clamping the lower electrically controlled box 10 on the clamping and sealing mechanism 340, and making the clamping and sealing mechanism 340 seal the electrolyte chamber 201; driving the clamping and sealing mechanism 340 and the lower electrically controlled box 10 downward through the lifting drive mechanism 330 so that the lower electrically controlled box 10 is completely immersed in water; filling the air inlet channel 3401 and the electrolyte chamber 201 with high-pressure gas of more than 0.2 MPa in turn through the inflation mechanism, and maintaining the pressure for more than 1 minute; if bubbles continue to be generated in the water, the water leak test fails.

[0105] In this embodiment, the electrically controlled lower box body 10 is clamped by the clamping and sealing mechanism 340, and the electrolyte chamber 201 is sealed by the clamping and sealing mechanism 340. The electrically controlled lower box body 10 is driven to be immersed in water and moved above the water surface by the lifting drive mechanism 330, and the electrolyte chamber 201 is filled with high-pressure gas by the inflation mechanism. In this way, there is no need to manually clamp the electrically controlled lower box body 10, manually seal the electrolyte chamber 201, or manually move the electrically controlled lower box body 10, thereby improving the efficiency of water leak testing and thereby improving the shipping efficiency of the electrically controlled lower box body 10. It can be understood that in order to avoid external interference, for example, interference from existing bubbles in the water, it is only when bubbles continue to be generated that it indicates that there is a leakage problem in the electrolyte container 200. In one embodiment, if the duration of the bubbles exceeds 2 seconds, the water leak test fails.

[0106] like Figure 6As shown, in one embodiment, the clamping sealing mechanism 340 includes a bearing seat 341, a pressure rod 342, a downward pressing drive assembly 343, a first sealing plate assembly 345, a sealing air intake assembly 346 and a sealing assembly 347. The bearing seat 341 is rotatably connected to the power output end of the lifting drive mechanism 330. The bearing seat 341 is formed with a placement groove 3411. The placement groove 3411 is used to accommodate the electronic control lower box 10. The first end of the pressure rod 342 is movably connected to the bearing seat 341, and the second end of the pressure rod 342 is detachably connected to the bearing seat 341 so that the pressure rod 342 opens and closes in the placement groove 3411. The downward pressing drive assembly 343 is installed on the pressure rod 342. The first sealing plate assembly 345 is fixedly connected to the power output end of the downward pressing drive assembly 343. The first sealing plate assembly 345 is used to press the electronic control lower box 10 into the placement groove 3411. The first sealing plate assembly 345 is also used to seal the upper opening 202 of the electrolyte container 200. A sealed air inlet assembly 346 is mounted on the support base 341 and is used to seal the liquid inlet 101 of the housing 100. An air inlet passage 3401 is formed in the sealed air inlet assembly 346. A sealing assembly 347 is mounted on the support base 341, and the sealing assembly 347 and the sealed air inlet assembly 346 extend to opposite sides of the support base 341. The sealing assembly 347 is used to seal the liquid outlet 102 of the housing 100.

[0107] like Figure 6 As shown, in this embodiment, when testing for water leaks, first place the electrically controlled lower box body 10 in the placement groove 3411, and set the upper opening 202 of the electrolyte chamber 201 upward, then cover the upper opening 202 of the electrolyte chamber 201 with the first sealing plate assembly 345, and then press the power output end of the driving assembly 343 downward to press and push the first sealing plate assembly 345, so that the first sealing plate assembly 345 presses the electrically controlled lower box body 10 tightly in the placement groove 3411, and makes the first sealing plate assembly 345 seal the upper opening 202 of the electrolyte chamber 201, and then seal the air intake assembly 346 and the sealing assembly 347 to seal the liquid inlet 101 and the liquid outlet 102 respectively, and then press the driving assembly 343 downward to drive the bearing seat 341 and the lower electrically controlled lower box body 10. Move the support base so that the lower box body 10 of the electronic control is completely immersed in water, and then the inflation mechanism fills the electrolyte chamber 201 with high-pressure gas of more than 0.2MPa and maintains the pressure for more than 1 minute. Finally, observe whether bubbles continue to be generated in the water. If bubbles continue to be generated in the water, the inflation mechanism stops filling the electrolyte chamber 201 with gas, and then rotate the supporting base to change the placement angle of the lower box body 10 of the electronic control. At this time, the lower box body 10 of the electronic control is also completely immersed in water, and then the inflation mechanism again fills the electrolyte chamber 201 with high-pressure gas of more than 0.2MPa and maintains the pressure for more than 1 minute. Then observe the bubbles in the water. If bubbles are generated, the air tightness of the electrolyte container 200 meets the requirements. Otherwise, the air tightness of the electrolyte container 200 cannot meet the requirements.

[0108] like Figure 6 As shown, in one embodiment, the sealed air inlet assembly 346 includes a sealed drive cylinder 3461 and a sealed air inlet member 3462. The sealed drive cylinder 3461 is mounted on the support base 341. The sealed air inlet member 3462 is fixedly connected to the power output end of the sealed drive cylinder 3461. The sealed air inlet member 3462 is disposed through the support base 341 and extends to one side of the placement groove 3411. The sealed air inlet member 3462 is used to seal the liquid inlet 101 of the housing 100. The air inlet channel 3401 is formed in the sealed air inlet member 3462. In this embodiment, when the sealed air inlet assembly 346 seals the liquid inlet 101, the sealed drive cylinder 3461 drives the sealed air inlet member 3462 to move so that the sealed air inlet member 3462 abuts against the outer wall of the housing 100, thereby allowing the sealed air inlet member 3462 to seal the liquid inlet 101.

[0109] In one embodiment, the first sealing plate assembly 345 includes a pressure plate and a sealing rubber ring. The pressure plate is connected to the power output end of the downward pressure drive assembly 343. A receiving groove is formed on one side of the pressure plate. The sealing rubber ring is embedded in the receiving groove. Part of the sealing rubber ring protrudes from the pressure plate so that the sealing rubber ring is used to seal the upper opening 202 of the electrolyte container 200.

[0110] like Figure 6 As shown, in one embodiment, the support base 341 is formed with a connecting groove 3412, and the first end of the pressure rod 342 is located in the connecting groove 3412 and is movably connected to the support base 341. The support base 341 is also formed with a connecting groove 3413, and the second end of the pressure rod 342 is movably embedded in the connecting groove 3413, so that the second end of the pressure rod 342 is detachably connected to the support base 341. In this embodiment, when the second end of the pressure rod 342 is embedded in the connecting groove 3413, the pressure rod 342 is fixedly connected to the support base 341. When it is necessary to remove the electric control lower box 10 from the support base 341, the second end of the pressure rod 342 is pulled out of the connecting groove 3413, so that the pressure rod 342 opens and closes in the placement groove 3411.

[0111] like Figure 7As shown, in one embodiment, the leak repair device 400 includes a leak repair frame 410, a supporting plate 420, a sealed liquid inlet assembly 430, a plugging assembly 440, a second sealing plate assembly 450 and a liquid filling assembly, wherein the leak repair frame 410 is located between the water leak test device 300 and the drying device, the leak repair frame 410 forms a leak repair space 411, the supporting plate 420 is located in the leak repair space 411 and is horizontally mounted on the leak repair frame 410, and the supporting plate 420 is used to place the electric control lower box 10. The sealed liquid inlet assembly 430 is mounted on the leak repair frame 410, and the sealed liquid inlet assembly 430 is used to seal the liquid inlet 101 of the housing 100. The sealed liquid inlet assembly 430 is also formed with a liquid inlet channel 431, and the liquid inlet channel 431 is used to communicate with the electrolyte chamber 201. The plugging assembly 440 is mounted on the leak-proof frame 410. The plugging assembly 440 and the sealing liquid inlet assembly 430 are respectively located on opposite sides of the carrier plate 420. The plugging assembly 440 is used to seal the liquid outlet 102 of the housing 100. The second sealing plate assembly 450 is movably connected to the leak-proof frame 410 up and down, and the second sealing plate assembly 450 is located on the upper side of the carrier plate 420. The second sealing plate assembly 450 is used to seal the upper opening 202 of the electrolyte container 200. The liquid filling assembly is arranged adjacent to the leak-proof frame 410. The output end of the liquid filling assembly is connected to the liquid inlet channel 431. The liquid filling assembly is used to press the leak-proof liquid into the liquid channel 431, the electrolyte cavity 201 and the leakage gap of the electrolyte container 200 in sequence, so that the leakage gap of the electrolyte container 200 is filled.

[0112] like Figure 8 As shown, in one embodiment, the leak repair device 400 also includes a guide assembly 460, which is connected to the leak repair frame 410, and the second sealing plate assembly 450 is connected to the guide assembly 460, so that the guide assembly 460 guides the movement of the second sealing plate assembly 450, so that the second sealing plate assembly 450 accurately seals the upper opening 202 of the electrolyte container 200.

[0113] like Figure 9As shown, in one embodiment, the gas leakage test device 500 includes a gas leakage test frame 510, a sealing bottom plate 520, a sealing top plate mechanism 530, a peripheral wall sealing mechanism 540 and an airtightness meter 550. The gas leakage test frame 510 is arranged adjacent to the drying device. The gas leakage test frame 510 forms a leakage test space 511. The sealing bottom plate 520 is located in the leakage test space 511 and is horizontally fixedly connected to the gas leakage test frame 510. The sealing bottom plate 520 is used to place the electric control lower box 10, and the sealing bottom plate 520 is used to seal the lower opening 106 of the outer shell 100. The sealing top plate mechanism 530 is movably connected to the gas leak test frame 510 up and down. The sealing top plate mechanism 530 is arranged opposite to the sealing bottom plate 520. The sealing top plate mechanism 530 is used to seal the first upper opening 104 and the second upper opening 105 of the outer shell 100. The peripheral wall sealing mechanism 540 is installed on the gas leak test frame 510. The peripheral wall sealing mechanism 540 is arranged along the circumference of the sealing bottom plate 520. The peripheral wall sealing mechanism 540 is used to seal the openings on the peripheral wall of the outer shell 100. The airtightness meter 550 is arranged adjacent to the sealing bottom plate 520. The airtightness meter 550 is used to detect whether there is a leakage problem in the electrolyte chamber 201 and the electronic control installation chamber 103. In this embodiment, the sealing bottom plate 520 is used to seal the lower opening 106 of the outer shell 100, the sealing top plate mechanism 530 is used to seal the first upper opening 104 and the second upper opening 105 of the outer shell 100, and the peripheral wall sealing mechanism 540 is used to seal the openings on the peripheral wall of the outer shell 100, so that the electrolyte chamber 201 and the electronic control installation chamber 103 are both sealed.

[0114] Furthermore, the airtightness tester 550 has a first detection port and a second detection port, which are respectively connected to the electrolyte chamber 201 and the electronic control installation chamber 103. When the airtightness tester 550 performs a gas leak test on the electrolyte chamber 201, the first detection port is opened and the electrolyte chamber 201 is inflated and pressurized. When the air pressure in the electrolyte chamber 201 reaches a preset value, the air supply is cut off. When the internal pressure value of the electrolyte chamber 201 continues to decrease, it means that there is a leakage problem in the electrolyte container 200, that is, the airtightness of the electrolyte chamber 201 is poor. When the airtightness tester 550 performs an air leak test on the electric control installation cavity 103, the second detection port is opened, and the electric control installation cavity 103 is inflated and pressurized. When the air pressure in the electric control installation cavity 103 reaches a preset value, the air source is cut off. When the internal pressure value of the electric control installation cavity 103 continues to drop, it means that there is a leakage problem in the shell 100, that is, the airtightness of the electric control installation cavity 103 is poor.

[0115] Compared with the prior art, the present invention has at least the following advantages:

[0116] 1. Since the leak repair device 400 is arranged adjacent to the water leak test device 300, after the water leak test is completed, the time for moving the electric control lower box 10 in the water leak test device 300 to the leak repair device 400 is shortened, thereby improving the shipping efficiency of the electric control lower box 10;

[0117] 2. Since the leak-sealing device 400 only seals the electrolyte cavity, that is, the leak-sealing device 400 performs local leak-sealing, it avoids the leak-sealing liquid from soaking the entire lower electronic control box 10, thereby avoiding the tooth holes of the lower electronic control box 10 from being blocked, saving the time of cleaning the tooth holes, and improving the shipping efficiency of the lower electronic control box 10.

[0118] 3. Since the leak repairing device 400 is arranged adjacent to the water leak testing device 300, the distance for moving the electric control lower box 10 from the water leak testing device 300 to the leak repairing device 400 is shorter, which reduces the chance of the electric control lower box 10 being bumped, and reduces the premium rate and return rate of the electric control lower box 10.

[0119] 4. Since the drying device is adjacent to the leak repairing device 400, after the leak repairing is completed, it takes less time to move the electrically controlled lower box 10 in the leak repairing device 400 to the drying device, thereby improving the shipping efficiency of the electrically controlled lower box 10.

[0120] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A method for manufacturing an electric control lower box of a new energy vehicle, characterized in that: The electric control lower box is manufactured by an electric control lower box production line, which includes a CNC machine tool, an automatic cleaning device, a water leak test device, a leak repair device, a drying device, and an air leak test device arranged in sequence. The method for manufacturing the electric control lower box of the new energy vehicle includes: Processing the die casting by the CNC machine tool to form the electric control lower box; Cleaning the electrically controlled lower box by the automatic cleaning device; Performing a water leak test on the electrolyte cavity of the electrolyte container of the lower electrically controlled box by using the water leak test device; If the water leak test fails, the electrolyte container is repaired by the leak repair device; Performing a drying operation on the electrically controlled lower box by the drying device; Performing gas leak testing on the electric control installation cavity and the electrolyte cavity of the housing of the electric control lower box by using the gas leak testing device; If the gas leak test is qualified, the electric control lower box is assembled; Wherein, the leak repair device includes a leak repair frame, a supporting plate, a sealed liquid inlet component, a plugging component, a second sealing plate component and a liquid filling component; the leak repair frame is located between the water leak test device and the drying device, and the leak repair frame forms a leak repair space; the supporting plate is located in the leak repair space and is horizontally installed on the leak repair frame, and the supporting plate is used to place the lower box of the electronic control; the sealed liquid inlet component is installed on the leak repair frame, and the sealed liquid inlet component is used to seal the liquid inlet of the shell, and the sealed liquid inlet component is also formed with a liquid inlet channel, and the liquid inlet channel is used to communicate with the electrolyte chamber; the plugging component is installed on The leak-proof frame, the sealing assembly and the sealing liquid inlet assembly are respectively located on opposite sides of the supporting plate, and the sealing assembly is used to seal the liquid outlet of the shell; the second sealing plate assembly is movably connected to the leak-proof frame up and down, and the second sealing plate assembly is located on the upper side of the supporting plate, and the second sealing plate assembly is used to seal the upper opening of the electrolyte container; the filling assembly is arranged adjacent to the leak-proof frame, and the output end of the filling assembly is connected to the liquid inlet channel, and the filling assembly is used to press the leak-proof liquid into the liquid inlet channel, the electrolyte cavity and the leakage gap of the electrolyte container in sequence.

2. The method for manufacturing the lower box of the electric control of a new energy vehicle according to claim 1, characterized in that: If the water leak test fails, the step of repairing the electrolyte container by the leak repair device includes: If the water leak test fails, the electrically controlled lower box is moved into the leak repair device; Blow dry the electronic control lower box with an air gun; The electrolyte container is leak-proofed by the leak-proof device.

3. The method for manufacturing the lower box of the electric control of the new energy vehicle according to claim 1, characterized in that: If the water leak test fails, after the step of repairing the electrolyte container by the leak repair device, and before the step of drying the electronic control lower box by the drying device, the method for manufacturing the electronic control lower box of the new energy vehicle also includes: cleaning the leak repairing liquid in the electronic control lower box.

4. The method for manufacturing the lower box of the electric control of a new energy vehicle according to claim 3, characterized in that: The step of cleaning the leak-proof liquid in the electrolyte chamber includes: Immerse the electronically controlled lower box in a clean water tank; The electrically controlled lower box is reciprocated in the clean water so that the leak-proof liquid in the electrically controlled lower box is dissolved in the clean water.

5. The method for manufacturing the lower box of the electric control of the new energy vehicle according to claim 4, characterized in that: In the step of reciprocating the electrically controlled lower housing in the clean water, the electrically controlled lower housing is swung and shaken.

6. The method for manufacturing the lower box of the electric control of a new energy vehicle according to claim 1, characterized in that: The water leak test device comprises: A water leak test bracket is located between the automatic cleaning device and the leak repair device; A water tank is placed on the water leak test bracket; A lifting drive mechanism is installed on the water leak test bracket; a clamping and sealing mechanism, located in the water cylinder and connected to the power output end of the lifting drive mechanism, the clamping and sealing mechanism being used to clamp the electrically controlled lower box and further used to seal the electrolyte chamber, the clamping and sealing mechanism being formed with an air intake channel, the air intake channel being used to communicate with the electrolyte chamber; and An inflation mechanism, wherein an output end of the inflation mechanism is connected to the air inlet channel.

7. The method for manufacturing the lower box of the electric control of a new energy vehicle according to claim 6, characterized in that: The clamping and sealing mechanism comprises: A supporting seat is rotatably connected to the power output end of the lifting drive mechanism, and the supporting seat is formed with a placement groove, and the placement groove is used to accommodate the electric control lower box; A pressure rod, wherein a first end of the pressure rod is movably connected to the bearing seat, and a second end of the pressure rod is detachably connected to the bearing seat so that the pressure rod can be opened and closed in the placement slot; A downward pressing drive assembly is mounted on the pressing rod; a first sealing plate assembly fixedly connected to the power output end of the downward pressure drive assembly, the first sealing plate assembly being used to press the electronic control lower box into the placement groove, and the first sealing plate assembly being further used to seal the upper opening of the electrolyte container; a sealed air inlet assembly mounted on the bearing seat, the sealed air inlet assembly being used to seal the liquid inlet of the housing, the air inlet passage being formed in the sealed air inlet assembly; and A sealing assembly is mounted on the bearing seat, and the sealing assembly and the sealed air inlet assembly extend to two opposite sides of the bearing seat respectively. The sealing assembly is used to seal the liquid outlet of the shell.

8. The method for manufacturing the lower box of the electric control of a new energy vehicle according to claim 1, characterized in that: The leak repair device further comprises a guide assembly, wherein the guide assembly is connected to the leak repair frame, and the second sealing plate assembly is connected to the guide assembly.

9. The method for manufacturing the lower box of the electric control of a new energy vehicle according to claim 1, characterized in that: The gas leak testing device comprises: A gas leak test rack is arranged adjacent to the drying device, and the gas leak test rack forms a leak test space; A sealing bottom plate is located in the leak test space and is horizontally fixedly connected to the gas leak test frame, the sealing bottom plate is used to place the electric control lower box, and the sealing bottom plate is used to seal the lower opening of the shell; A sealing top plate mechanism is movably connected to the gas leak test frame in an upper and lower manner. The sealing top plate mechanism is arranged opposite to the sealing bottom plate and is used to seal the first upper opening and the second upper opening of the housing. a peripheral wall sealing mechanism, mounted on the gas leak test frame, the peripheral wall sealing mechanism being arranged along the circumference of the sealing bottom plate and being used for sealing an opening on the peripheral wall of the housing; and An airtightness tester is provided adjacent to the sealing bottom plate, and is used to detect whether there is a leakage problem in the electrolyte cavity and the electronic control installation cavity.

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