Automobile electronic controller and assembling method thereof

Abstract

The invention relates to the technical field of automobile electronic controller waterproofing, in particular to an automobile electronic controller which comprises an upper shell. The upper shell is connected with a bottom plate; a circuit board is arranged between the upper shell and the bottom plate; the circuit board is connected with a connector; the upper shell comprises a front wall; the connector is connected to the front wall; a first waterproof path is arranged between the connector and the upper shell; a second waterproof path is arranged between the connector and the bottom plate; a third waterproof path is arranged between the upper shell and the bottom plate; the device is high in protection compatibility, sealing features are reserved on the upper shell, the bottom plate and the connector, when no sealant is added, a countercurrent multi-stage complex waterproof path from bottom to top is formed through multi-stage matching of the features of all the parts, and the waterproof protection requirements of I PX2, I PX3 and I PX4 are met; when sealant is added, all parts are connected in a sealed mode, and the sealing waterproof protection requirements of I PX7 and I PX8 are met.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile electronic controller waterproofing, and in particular to an automobile electronic controller. Background Art

[0002] Due to the diversified landscape of the automotive market, vehicles with different uses (such as family cars and off-road vehicles) and vehicles used in different environments (such as urban roads and muddy and bumpy rural roads) have different requirements for vehicle waterproof protection. Therefore, there are also different protection requirements for electronic controllers installed in vehicles.

[0003] For family vehicles with better use environments, the electronic controllers installed inside them only need to meet a lower protection level (drip, splash, etc., i.e. IPX2, IPX3 or IPX4 waterproof level); for off-road vehicles with worse use environments, the electronic controllers installed inside them need to meet a higher protection level (immersion in water, i.e. IPX7 or IPX8 waterproof level);

[0004] Based on the different protection requirements of automobiles, it is often necessary to develop two different automotive electronic controllers and selectively apply them according to the needs. However, developing two electronic controllers requires double the development resources (such as molds, assembly production lines, etc.), which will result in poor production line adaptability, complex material management, and high development costs.

[0005] After searching, the applicant found that the Chinese patent document with application number 202322783163.9 disclosed a PCB grounding spring and an automotive electronic controller on June 21, 2024. The PCB grounding spring includes a cantilever portion, a bow portion and a bent portion. The bow portion includes a first connecting segment and a second connecting segment connected to each other. One end of the cantilever portion is bent and connected to the first connecting segment of the bow portion, and one end of the bent portion is bent and connected to the second connecting segment of the bow portion. This device also cannot solve the above technical problems.

[0006] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide an automotive electronic controller that can meet different waterproof requirements. Summary of the Invention

[0007] The object of the present invention is to provide an automotive electronic controller that can meet different waterproof requirements.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: an automotive electronic controller, including an upper shell; the upper shell is connected to a bottom plate; a circuit board is provided between the upper shell and the bottom plate; the circuit board is connected to a connector; the upper shell includes a front wall; the connector is connected to the front wall; a first waterproof path is provided between the connector and the upper shell; a second waterproof path is provided between the connector and the bottom plate; and a third waterproof path is provided between the upper shell and the bottom plate.

[0009] A U-shaped groove is provided on the front wall; the connector is arranged in the U-shaped groove; a shell groove is provided on one side of the front wall; a shell sealing groove is provided on one side of the shell groove; a shell U-shaped rib is provided between the shell groove and the shell sealing groove.

[0010] The connector includes a first flange; a second flange is provided on one side of the first flange; a connector sealing rib is provided on one side of the second flange; a mounting groove is provided between the second flange and the connector sealing rib; the first flange is matched with the front wall gap; the second flange is provided in the shell groove; the connector sealing rib is provided in the shell sealing groove; and the shell U-shaped rib is provided in the mounting groove.

[0011] The first waterproof path includes a first passage, a second passage, a third passage and a fourth passage; the first passage is arranged between the front wall and the first flange; the second passage is arranged between the second flange and the shell groove; the third passage is arranged between the shell U-shaped rib and the mounting groove; the fourth passage is arranged between the connector sealing rib and the shell sealing groove.

[0012] The bottom plate includes an annular rib; the annular rib includes an annular rib sealing surface and an annular rib side wall; the connector is provided with a sealing surface on a side away from the mounting groove; the sealing surface is provided on one side of the second flange.

[0013] The second waterproof path includes a fifth passage and a sixth passage; the fifth passage is provided between the second flange and the side wall of the annular rib; the sixth passage is provided between the sealing surface of the annular rib and the sealing surface.

[0014] The upper shell includes an annular side wall; a shell sealing surface is provided on one side of the annular side wall; the third waterproof path includes a seventh passage and an eighth passage; the seventh passage is provided between the annular side wall and the annular rib side wall; the eighth passage is provided between the shell sealing surface and the annular rib sealing surface.

[0015] According to the sealing level, sealant is provided in the fourth passage, the sixth passage and the eighth passage.

[0016] An assembly support convex surface and an assembly auxiliary support convex surface are provided on one side of the upper shell away from the annular side wall; a label is provided on one side of the assembly auxiliary support convex surface.

[0017] A method for assembling the automotive electronic controller, specifically comprising:

[0018] When the automotive electronic controller only needs to meet IPX2, IPX3 or IPX3 requirements, the connector is placed in the U-shaped groove of the front wall, with the first flange and the front wall having a clearance fit; the second flange is installed in the housing groove; the connector sealing rib is installed in the housing sealing groove; the housing U-shaped rib is installed in the mounting groove; the second flange and the side wall of the annular rib have a clearance fit; the sealing surface and the sealing surface of the annular rib have a clearance fit; the annular side wall and the side wall of the annular rib have a clearance fit; the housing sealing surface and the sealing surface of the annular rib have a clearance fit;

[0019] When an automotive electronic controller needs to have IPX7 or IPX8 protection, the connector is placed in the U-shaped groove of the front wall, with the first flange and the front wall having a clearance fit; the second flange is installed in the housing groove; the connector sealing rib is installed in the housing sealing groove; the housing U-shaped rib is installed in the mounting groove; the second flange and the side wall of the annular rib have a clearance fit; the sealing surface and the sealing surface of the annular rib have a clearance fit; the annular side wall and the side wall of the annular rib have a clearance fit; the housing sealing surface and the sealing surface of the annular rib have a clearance fit; and the fourth, sixth and eighth passages are sealed with sealant.

[0020] The beneficial effects of the present invention are:

[0021] The present invention has high protection compatibility: sealing features are reserved on the upper shell, bottom plate and connector. When no sealant is added, a bottom-up, countercurrent, multi-level complex waterproof path is formed through the multi-level coordination of the features of each component, achieving the waterproof protection requirements of IPX2, IPX3 and IPX4; when sealant is added, a sealed connection is formed between the components, achieving the sealing and waterproof protection requirements of IPX7 and IPX8.

[0022] The production line of the present invention has high manufacturing adaptability: the same parts are used for sealing and non-sealing, and the same tooling on the same production line can meet two different product requirements. The production line has high adaptability, which reduces the cost of developing production lines and tooling.

[0023] The present invention is simple to manage: the sealing and non-sealing parts use the same components, which reduces the cost of material management.

[0024] The present invention has high manufacturability: the support position of the upper shell adopts a local convex feature, which greatly reduces the manufacturing difficulty of the plane, improves the manufacturing accuracy, and improves the support effect during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, in which:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the upper shell of the present invention.

[0028] Figure 3 It is a schematic diagram of the back structure of the upper shell of the present invention.

[0029] Figure 4 Schematic diagram of the structure of the connector of the present invention.

[0030] Figure 5 It is a schematic diagram of the sealing surface structure of the connector of the present invention.

[0031] Figure 6 It is a structural schematic diagram of the base plate of the present invention.

[0032] Figure 7 It is a cross-sectional view of the present invention.

[0033] Figure 8 for Figure 7 A partial enlarged view of point A.

[0034] Figure 9 It is a structural schematic diagram of the first waterproof path of the present invention.

[0035] Figure 10 for Figure 7 A partial enlarged view of point B.

[0036] Figure 11 Schematic diagram of the structure of the second waterproof path of the present invention.

[0037] Figure 12 for Figure 7 A partial enlarged view of point C.

[0038] Figure 13 Schematic diagram of the structure of the third waterproof path of the present invention.

[0039] The marks in the above figure are:

[0040] The following are marked in the figure:

[0041] 1. Upper shell,

[0042] 2. Bottom plate, 201. Annular rib, 202. Annular rib sealing surface, 203. Annular rib side wall,

[0043] 3. Circuit board,

[0044] 4. Connector, 401. First flange, 402. Second flange, 403. Connector sealing rib, 404. Mounting groove,

[0045] 5. Front wall, 501. U-shaped groove, 502. Shell groove, 503. Shell sealing groove, 504. Shell U-shaped rib,

[0046] 6. First channel, 601, second channel, 602, third channel, 603, fourth channel,

[0047] 7. Sealing surface, 701. Fifth passage, 702. Sixth passage,

[0048] 8. Annular side wall, 801. Shell sealing surface, 802. Seventh passage, 803. Eighth passage,

[0049] 9. Sealant, 901. Assemble the supporting convex surface, 902. Assemble the auxiliary supporting convex surface. DETAILED DESCRIPTION

[0050] The following is a further detailed description of the specific implementation methods of the present invention through the description of the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0051] Figure 1 The automotive electronic controller shown includes an upper shell 1; the upper shell 1 is connected to a base plate 2; a circuit board 3 is provided between the upper shell 1 and the base plate 2; the circuit board 3 is connected to a connector 4; the upper shell 1 includes a front wall 5; the connector 4 is connected to the front wall 5; a first waterproof path is provided between the connector 4 and the upper shell 1; a second waterproof path is provided between the connector 4 and the base plate 2; and a third waterproof path is provided between the upper shell 1 and the base plate 2.

[0052] Sealing features are reserved on the upper shell 1, the base plate 2 and the connector 4. When the sealant 9 is not added, a bottom-up, countercurrent, multi-level complex waterproof path is formed through the multi-level coordination of the features of each component, thereby achieving the waterproof protection requirements of IPX2, IPX3 and IPX4. When the sealant 9 is added, a sealed connection is formed between the components, thereby achieving the sealing and waterproof protection requirements of IPX7 and IPX8.

[0053] IPX is the second digit of the IP (Ingress Protection Rating) rating, representing the level of water resistance (the first digit is the dust resistance level, with X indicating unspecified dust resistance). IPX2 means the device is protected against vertical dripping water when tilted 15°; IPX3 is protected against water spraying within 60° on either side of the vertical; IPX4 can withstand splashing water from any direction; IPX7 means no water ingress after immersion in still water at a depth of 1 meter for 30 minutes; and IPX8 allows for extended immersion in deeper water specified by the manufacturer.

[0054] like Figure 2 As shown, a U-shaped groove 501 is provided on the front wall 5; the connector 4 is provided in the U-shaped groove 501; a shell groove 502 is provided on one side of the front wall 5; a shell sealing groove 503 is provided on one side of the shell groove 502; and a shell U-shaped rib 504 is provided between the shell groove 502 and the shell sealing groove 503.

[0055] The upper shell 1 is a square hollow shell with openings at the bottom and one side; the circuit board 3 is installed in the upper shell 1; the front wall 5 and the upper shell 1 are an integral structure; the U-shaped groove 501 is a through groove; the connector 4 is installed in the U-shaped groove 501; the cross-sections of the shell groove 502, the shell sealing groove 503 and the shell U-shaped rib 504 are all U-shaped; the shell U-shaped rib 504 separates the shell groove 502 and the shell sealing groove 503.

[0056] like Figure 4 As shown, the connector 4 includes a first flange 401; a second flange 402 is provided on one side of the first flange 401; a connector sealing rib 403 is provided on one side of the second flange 402; a mounting groove 404 is provided between the second flange 402 and the connector sealing rib 403; the first flange 401 is matched with the gap of the front wall 5; the second flange 402 is provided in the shell groove 502; the connector sealing rib 403 is provided in the shell sealing groove 503; and the shell U-shaped rib 504 is provided in the mounting groove 404.

[0057] The first flange 401 and the connector 4 are an integral structure; the first flange 401 is arranged at the end of the connector 4 away from the circuit board 3; the first flange 401 extends to both sides of the connector 4 and the side of the connector 4 close to the base plate 2; the second flange 402 and the first flange 401 are an integral structure; the second flange 402 extends to both sides of the first flange 401 and the side of the first flange 401 away from the base plate 2; the second flange 402 is arranged in the shell groove 502, and a gap is provided between the second flange 402 and the shell groove 502; the connector sealing rib 403 is arranged in the shell sealing groove 503, and a gap is provided between the connector sealing rib 403 and the shell sealing groove 503; the shell U-shaped rib 504 is arranged in the installation groove 404, and a gap is provided between the shell U-shaped rib 504 and the installation groove 404.

[0058] like Figure 7-9As shown, the first waterproof path includes a first passage 6, a second passage 601, a third passage 602 and a fourth passage 603; the first passage 6 is arranged between the front wall 5 and the first flange 401; the second passage 601 is arranged between the second flange 402 and the shell groove 502; the third passage 602 is arranged between the shell U-shaped rib 504 and the installation groove 404; the fourth passage 603 is arranged between the connector sealing rib 403 and the shell sealing groove 503.

[0059] The first passage 6, the second passage 601, the third passage 602 and the fourth passage 603 are connected to form a complex waterproof path, which effectively realizes the waterproof protection requirements of the non-sealed solution for dripping and splashing environments (IPX2, IPX3 or IPX3); when there is a need for complete sealing, sealant 9 is added to the shell sealing groove 503 of the upper shell 1. After the connector 4 is assembled, the sealant 9 will be squeezed by the connector sealing rib 403 of the connector 4. After the sealant 9 is cured, a sealed connection between the two components is achieved. The fourth passage 603 is closed by the sealant 9, thereby preventing water from entering the interior of the electronic controller through the gap between the upper shell 1 and the connector 4 in a water immersion environment (IPX7, IPX8), thereby protecting the electronic components inside the electronic controller.

[0060] like Figure 5-6 As shown, the bottom plate 2 includes an annular rib 201; the annular rib 201 includes an annular rib sealing surface 202 and an annular rib side wall 203; the connector 4 is provided with a sealing surface 7 on the side away from the mounting groove 404; the sealing surface 7 is provided on the side of the second flange 402.

[0061] The annular rib 201 and the bottom plate 2 are an integral structure; the annular rib side wall 203 is arranged on the side of the annular rib 201; the annular rib sealing surface 202 is arranged on the side of the annular rib 201 away from the bottom plate 2; a second flange 402 is provided on one side of the sealing surface 7, and a flange is provided on the other side of the sealing surface 7; the annular rib side wall 203 is provided on one side of the second flange 402, and a gap is provided between the annular rib side wall 203 and the second flange 402; a gap is provided between the annular rib sealing surface 202 and the sealing surface 7.

[0062] like Figure 10-11 As shown, the second waterproof path includes a fifth passage 701 and a sixth passage 702 ; the fifth passage 701 is provided between the second flange 402 and the annular rib side wall 203 ; the sixth passage 702 is provided between the annular rib sealing surface 202 and the sealing surface 7 .

[0063] The fifth passage 701 and the sixth passage 702 are connected to form a complex waterproof path, which effectively realizes the waterproof protection requirements of the non-sealed solution for dripping and splashing environments (IPX2, IPX3 or IPX3); when there is a need for complete sealing, sealant 9 is added to the sealing surface 7 of the connector 4. After the base plate 2 is assembled, the sealant 9 will be squeezed by the annular rib sealing surface 202 of the base plate 2. After the sealant 9 is cured, a sealed connection between the two components is achieved, thereby preventing water from entering the interior of the electronic controller through the gap between the connector 4 and the base plate 2 in a water immersion environment (IPX7, IPX8), thereby protecting the electronic components inside the electronic controller.

[0064] like Figure 12-13 As shown, the upper shell 1 includes an annular side wall 8; a shell sealing surface 801 is provided on one side of the annular side wall 8; the third waterproof path includes a seventh passage 802 and an eighth passage 803; the seventh passage 802 is provided between the annular side wall 8 and the annular rib side wall 203; the eighth passage 803 is provided between the shell sealing surface 801 and the annular rib sealing surface 202.

[0065] After the connector 4 and the upper shell 1 are assembled, the shell sealing surface 801 overlaps with the sealing surface 7 of the connector 4; the seventh passage 802 and the eighth passage 803 are connected, forming a complex waterproof path, effectively achieving the waterproof protection requirements of the non-sealed solution for dripping and splashing environments (IPX2, IPX3 or IPX3); when there is a need for complete sealing, sealant 9 is added to the shell sealing surface 801 of the upper shell 1. After the base plate 2 is assembled, the sealant 9 will be squeezed by the annular rib sealing surface 202 of the base plate 2. After the sealant 9 is cured, a sealed connection between the two components is achieved, thereby preventing water from entering the interior of the electronic controller through the gap between the upper shell 1 and the base plate 2 in a water immersion environment (IPX7, IPX8), thereby protecting the electronic components inside the electronic controller.

[0066] According to the sealing level, a sealant 9 is provided in the fourth passage 603 , the sixth passage 702 and the eighth passage 803 .

[0067] The fourth passage 603, the sixth passage 702, and the eighth passage 803 are completely sealed by the sealant 9, thereby achieving complete sealing of the automotive electronic controller, preventing water from entering the interior of the electronic controller through gaps in a water immersion environment (IPX7, IPX8), and protecting the electronic components inside the electronic controller.

[0068] like Figure 3 As shown, an assembly support convex surface 901 and an assembly auxiliary support convex surface 902 are provided on the side of the upper shell 1 away from the annular side wall 8; a label is provided on one side of the assembly auxiliary support convex surface 902.

[0069] The assembly support convex surface 901 is used for tooling support during assembly. This support adopts four raised small circular surfaces, which can achieve better flatness accuracy during mold forming, ensuring that there is no obvious tilt during assembly, and plays the role of assembly main support; the assembly auxiliary support convex surface 902 adopts four local raised small surfaces, which can achieve better flatness accuracy during mold forming. When assembling, a certain gap is reserved between it and the tooling to avoid over-fitting with the main support, playing the role of auxiliary support, and preventing the upper shell 1 from causing excessive deformation during assembly stress; at the same time, this feature is also used for positioning when attaching labels to the upper shell 1.

[0070] A method for assembling an automotive electronic controller, specifically comprising:

[0071] When the automotive electronic controller only needs to have IPX2, IPX3, or IPX3 ratings, the connector 4 is positioned in the U-shaped groove 501 of the front wall 5, with the first flange 401 and the front wall 5 having a clearance fit; the second flange 402 is installed in the housing groove 502; the connector sealing rib 403 is installed in the housing sealing groove 503; the housing U-shaped rib 504 is installed in the mounting groove 404; the second flange 402 and the annular rib side wall 203 have a clearance fit; the sealing surface 7 and the annular rib sealing surface 202 have a clearance fit; the annular side wall 8 and the annular rib side wall 203 have a clearance fit; and the housing sealing surface 801 and the annular rib sealing surface 202 have a clearance fit.

[0072] When the automotive electronic controller needs to have IPX7 or IPX8 protection, the connector 4 is arranged in the U-shaped groove 501 of the front wall 5, and the first flange 401 is loosely fitted with the front wall 5; the second flange 402 is installed in the housing groove 502; the connector sealing rib 403 is installed in the housing sealing groove 503; the housing U-shaped rib 504 is installed in the mounting groove 404; the second flange 402 is loosely fitted with the annular rib side wall 203; the sealing surface 7 is loosely fitted with the annular rib sealing surface 202; the annular side wall 8 is loosely fitted with the annular rib side wall 203; the housing sealing surface 801 is loosely fitted with the annular rib sealing surface 202; and the fourth passage 603, the sixth passage 702, and the eighth passage 803 are sealed with sealant 9.

[0073] The specific workflow of the present invention is as follows:

[0074] The first passage 6, the second passage 601, the third passage 602 and the fourth passage 603 are connected to form a complex waterproof path, which effectively realizes the waterproof protection requirements of the non-sealed solution for dripping and splashing environments (IPX2, IPX3 or IPX3); when there is a need for complete sealing, sealant 9 is added to the shell sealing groove 503 of the upper shell 1. After the connector 4 is assembled, the sealant 9 will be squeezed by the connector sealing rib 403 of the connector 4. After the sealant 9 is cured, a sealed connection between the two components is achieved. The fourth passage 603 is closed by the sealant 9, thereby preventing water from entering the interior of the electronic controller through the gap between the upper shell 1 and the connector 4 in a water immersion environment (IPX7, IPX8), thereby protecting the electronic components inside the electronic controller.

[0075] The fifth passage 701 and the sixth passage 702 are connected to form a complex waterproof path, which effectively realizes the waterproof protection requirements of the non-sealed solution for dripping and splashing environments (IPX2, IPX3 or IPX3); when there is a need for complete sealing, sealant 9 is added to the sealing surface 7 of the connector 4. After the base plate 2 is assembled, the sealant 9 will be squeezed by the annular rib sealing surface 202 of the base plate 2. After the sealant 9 is cured, a sealed connection between the two components is achieved, thereby preventing water from entering the interior of the electronic controller through the gap between the connector 4 and the base plate 2 in a water immersion environment (IPX7, IPX8), thereby protecting the electronic components inside the electronic controller.

[0076] The seventh passage 802 and the eighth passage 803 are connected to form a complex waterproof path, which effectively realizes the waterproof protection requirements of the non-sealed solution for dripping and splashing environments (IPX2, IPX3 or IPX3); when there is a need for complete sealing, sealant 9 is added to the shell sealing surface 801 of the upper shell 1. After assembling the bottom plate 2, the sealant 9 will be squeezed by the annular rib sealing surface 202 of the bottom plate 2. After the sealant 9 is cured, a sealed connection between the two components is achieved, thereby preventing water from entering the interior of the electronic controller through the gap between the upper shell 1 and the bottom plate 2 in a water immersion environment (IPX7, IPX8), thereby protecting the electronic components inside the electronic controller.

[0077] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any direct application of the above-described concepts and technical solutions to other situations without modification, fall within the scope of protection of the present invention.

Claims

1. An automotive electronic controller, characterized in that: The invention comprises an upper shell (1); the upper shell (1) is connected to a bottom plate (2); a circuit board (3) is provided between the upper shell (1) and the bottom plate (2); the circuit board (3) is connected to a connector (4); the upper shell (1) comprises a front wall (5); the connector (4) is connected to the front wall (5); a first waterproof path is provided between the connector (4) and the upper shell (1); a second waterproof path is provided between the connector (4) and the bottom plate (2); and a third waterproof path is provided between the upper shell (1) and the bottom plate (2).

2. An automotive electronic controller according to claim 1, characterized in that: The front wall (5) is provided with a U-shaped groove (501); the connector (4) is arranged in the U-shaped groove (501); a housing groove (502) is provided on one side of the front wall (5); a housing sealing groove (503) is provided on one side of the housing groove (502); and a housing U-shaped rib (504) is provided between the housing groove (502) and the housing sealing groove (503).

3. An automotive electronic controller according to claim 2, characterized in that: The connector (4) comprises a first flange (401); a second flange (402) is provided on one side of the first flange (401); a connector sealing rib (403) is provided on one side of the second flange (402); a mounting groove (404) is provided between the second flange (402) and the connector sealing rib (403); the first flange (401) is spaced apart from the front wall (5); the second flange (402) is provided in the housing groove (502); the connector sealing rib (403) is provided in the housing sealing groove (503); and the housing U-shaped rib (504) is provided in the mounting groove (404).

4. An automotive electronic controller according to claim 3, characterized in that: The first waterproof path includes a first passage (6), a second passage (601), a third passage (602) and a fourth passage (603); the first passage (6) is provided between the front wall (5) and the first flange (401); the second passage (601) is provided between the second flange (402) and the housing groove (502); the third passage (602) is provided between the housing U-shaped rib (504) and the mounting groove (404); and the fourth passage (603) is provided between the connector sealing rib (403) and the housing sealing groove (503).

5. An automotive electronic controller according to claim 4, characterized in that: The bottom plate (2) includes an annular rib (201); the annular rib (201) includes an annular rib sealing surface (202) and an annular rib side wall (203); the connector (4) is provided with a sealing surface (7) on a side away from the mounting groove (404); the sealing surface (7) is provided on one side of the second flange (402).

6. An automotive electronic controller according to claim 5, characterized in that: The second waterproof path includes a fifth passage (701) and a sixth passage (702); the fifth passage (701) is provided between the second flange (402) and the annular rib side wall (203); and the sixth passage (702) is provided between the annular rib sealing surface (202) and the sealing surface (7).

7. An automotive electronic controller according to claim 6, characterized in that: The upper shell (1) includes an annular side wall (8); a housing sealing surface (801) is provided on one side of the annular side wall (8); the third waterproof path includes a seventh passage (802) and an eighth passage (803); the seventh passage (802) is provided between the annular side wall (8) and the annular rib side wall (203); and the eighth passage (803) is provided between the housing sealing surface (801) and the annular rib sealing surface (202).

8. An automotive electronic controller according to claim 7, characterized in that: According to the sealing level, a sealant (9) is provided in the fourth passage (603), the sixth passage (702) and the eighth passage (803).

9. An automotive electronic controller according to any one of claims 7-8, characterized in that: An assembly support convex surface (901) and an assembly auxiliary support convex surface (902) are provided on a side of the upper shell (1) away from the annular side wall (8); a label is provided on one side of the assembly auxiliary support convex surface (902).

10. A method for assembling an automotive electronic controller according to any one of claims 1 to 9, characterized in that: Specifically: When the automotive electronic controller only needs to have IPX2, IPX3 or IPX3, the connector (4) is arranged in the U-shaped groove (501) of the front wall (5), and the first flange (401) is clearance-matched with the front wall (5); the second flange (402) is installed in the housing groove (502); the connector sealing rib (403) is installed in the housing sealing groove (503); the housing U-shaped rib (504) is installed in the installation groove (404); the second flange (402) is clearance-matched with the annular rib side wall (203); the sealing surface (7) is clearance-matched with the annular rib sealing surface (202); the annular side wall (8) is clearance-matched with the annular rib side wall (203); the housing sealing surface (801) is clearance-matched with the annular rib sealing surface (202); When the automotive electronic controller needs to have IPX7 or IPX8, the connector (4) is arranged in the U-shaped groove (501) of the front wall (5), and the first flange (401) is clearance-matched with the front wall (5); the second flange (402) is installed in the housing groove (502); the connector sealing rib (403) is installed in the housing sealing groove (503); the housing U-shaped rib (504) is installed in the installation groove (404); the second flange (402) is clearance-matched with the annular rib side wall (203); the sealing surface (7) is clearance-matched with the annular rib sealing surface (202); the annular side wall (8) is clearance-matched with the annular rib side wall (203); the housing sealing surface (801) is clearance-matched with the annular rib sealing surface (202); and the fourth passage (603), the sixth passage (702) and the eighth passage (803) are sealed with a sealant (9).

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