Automotive electric control cover plate and electric machine electric control assembly
By using a plastic electronic control cover made of PA66 and GF50 composite materials and integrally molding it with the bushing, the problem of high fuel consumption caused by the heavy weight of the electronic control cover is solved, achieving lightweighting and cost reduction, and possessing environmental advantages.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING JINKANG POWER NEW ENERGY CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-06-09
AI Technical Summary
In the electric motor assembly of new energy vehicles, the use of metal materials for the electronic control cover results in a large weight, which increases fuel consumption and cost, and existing technologies are difficult to effectively reduce.
The plastic cover body, made of PA66 and GF50 composite materials, is integrally molded with multiple bushings. Combined with the sealing strip and bushing design, it achieves a detachable connection, reducing the overall vehicle weight and cost.
Plastic covers have low density and high specific strength, which reduces the overall vehicle weight, reduces fuel consumption, has environmental advantages, reduces material and processing costs, and meets the performance requirements of motors.
Smart Images
Figure CN224343499U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and more particularly to an automotive electronic control cover and an electric motor control assembly. Background Technology
[0002] With the rapid development of new energy vehicles, competition in technology and cost has become extremely fierce. The high cost of some automotive parts is a problem that technical personnel in this field urgently need to consider and solve.
[0003] The electronic control cover is an indispensable and important component of the transmission of modern new energy vehicles. It directly cooperates with the electronic control box or motor housing and bears and transmits a certain amount of vibration and noise from external parts.
[0004] Currently, in the production process of electric motor assemblies for new energy vehicles, the control cover is mainly made of metal materials such as cast iron and cast aluminum. However, metal materials have a high density, so the weight of the electric motor assembly is also large. Generally speaking, the fuel consumption of a car is closely related to the weight of its parts. Reducing costs and improving the fuel consumption of new energy vehicles are problems that technical personnel in the field urgently need to consider and solve. Summary of the Invention
[0005] The purpose of this application is to provide an automotive electronic control cover and an electric motor control assembly to reduce the overall cost and fuel consumption of the vehicle.
[0006] This application provides an automotive electronic control cover, comprising:
[0007] The cover body is made of plastic.
[0008] Multiple bushings are embedded in the cover plate body, and the cover plate body and multiple bushings are integrally formed.
[0009] In one embodiment, the plastic material is a composite material including PA66 and GF50.
[0010] In one embodiment, the cover plate body includes: a sealing groove;
[0011] The automotive electronic control cover also includes a sealing strip, which is installed in a sealing groove.
[0012] In one embodiment, the sealing strip is made of hydrogenated nitrile rubber.
[0013] In one embodiment, the plurality of bushings includes:
[0014] First bushing;
[0015] The second bushing is longer than the first bushing, and both the first and second bushings are cylinders with internal threads;
[0016] The first and second bushings are used to cooperate with the first fastener to detachably connect the cover plate body to the housing of the automotive motor and electronic control assembly.
[0017] In one embodiment, the plurality of bushings includes:
[0018] The third bushing, which is a cylinder with internal threads, is used to mate with the second fastener to detachably install the cover body to the automotive wiring harness.
[0019] In one embodiment, the plurality of bushings further includes:
[0020] The fourth bushing is a cylinder with internal threads. The fourth bushing is used to cooperate with the third fastener to detachably connect the cover plate body to the safety cover plate.
[0021] In one embodiment, the cover plate body is provided with an installation window;
[0022] The automotive electronic control cover also includes: a safety cover, which covers the installation window, and the cover body and the safety cover are detachably connected.
[0023] In one embodiment, the thickness of the cover plate body is 2.5 mm.
[0024] This application also provides a motor control assembly, including a housing, a filter disposed within the housing, and the motor control assembly further including an automotive control cover plate of any of the above-mentioned features; the automotive control cover plate covers the filter, and the cover plate body of the automotive control cover plate is detachably connected to the housing via a bushing.
[0025] The advantages of this application compared to the prior art are:
[0026] This application effectively reduces the overall weight of the electronic control cover by using a one-piece molded plastic cover body and multiple bushings. Plastic not only possesses low density, high specific strength, good sound insulation, and excellent corrosion resistance, but also offers environmental advantages, enabling recycling and reuse in the market. Furthermore, the density of plastic is only 1 / 4 to 1 / 3 that of metal, resulting in significantly lower raw material costs and reduced material and processing costs. The significant weight reduction further reduces fuel and electricity consumption in new energy vehicles, lowering overall operating costs. Attached Figure Description
[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1This is a schematic diagram of an automotive electronic control cover structure according to an embodiment of this application;
[0029] Figure 2 This is a schematic diagram of the structure of a cover plate body with a sealing strip according to an embodiment of this application;
[0030] Figure 3 This is a schematic diagram showing the width of the sealing strip according to an embodiment of this application;
[0031] Figure 4 This is a schematic diagram showing the height of the sealing strip according to an embodiment of this application;
[0032] Figure 5 This is a schematic diagram showing the width of the sealing groove according to an embodiment of this application;
[0033] Figure 6 This is a schematic diagram showing the depth of the sealing groove according to an embodiment of this application;
[0034] Figure 7 As shown in one embodiment of this application Figure 1 Schematic diagram of AA section;
[0035] Figure 8 As shown in one embodiment of this application Figure 1 Schematic diagram of the BB cross section;
[0036] Figure 9 This is a schematic diagram illustrating the thickness of the cover plate body according to an embodiment of this application;
[0037] Figure 10 This is a schematic diagram illustrating the installation of an automotive electronic control cover and a motor-electronic control assembly according to an embodiment of this application.
[0038] Figure 11 As shown in one embodiment of this application Figure 10 Top view;
[0039] Figure 12 As shown in one embodiment of this application Figure 10 The installation window diagram is shown below.
[0040] The above figures include the following reference numerals:
[0041] 1-Cover plate body; 2-Bushing; 3-Reinforcing rib; 4-Sealing groove; 5-Sealing strip; 6-Safety cover plate; 7-Mounting window; 8-Motor and electronic control assembly; 9-Housing; 10-Filter; 21-First bushing; 22-Second bushing; 23-Third bushing; 24-Fourth bushing. Detailed Implementation
[0042] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.
[0043] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0044] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0045] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.
[0046] With increasing global emphasis on energy conservation and emission reduction, lightweighting has become an inevitable trend in the automotive industry. As materials technology advances, plastics are now widely used in new energy vehicle transmissions, motors, and other fields. Compared to metals, plastic materials offer superior advantages such as lower density, higher specific strength, sound insulation, and corrosion resistance. More complex parts can be injection molded at low cost, and plastic components are also recyclable. Due to their lightweight, high strength, corrosion resistance, and ease of processing, plastics are gradually replacing traditional metal parts, achieving the goals of reducing overall vehicle weight, improving fuel economy, and reducing emissions. Therefore, this application provides an automotive electronic control cover to reduce overall vehicle weight, lower overall vehicle cost, and reduce fuel consumption.
[0047] In the embodiments of this application, Figure 1 This is a schematic diagram of an automotive electronic control cover structure according to an embodiment of this application, as shown below. Figure 1 As shown, the automotive electronic control cover includes a cover body 1 and multiple bushings 2; wherein the cover body 1 is made of plastic, and the bushings 2 are made of metal. The multiple bushings 2 are embedded in the cover body 1, and the cover body 1 and the multiple bushings 2 are integrally formed. The cover body 1 is provided with multiple reinforcing ribs 3, which can significantly improve the rigidity and bending resistance of the electronic control cover, and reduce the risk of deformation caused by external pressure, vibration or impact.
[0048] This application integrates the cover plate body 1 and various bushings 2 into a single injection molding process (i.e., using insert molding technology, the bushings 2 are placed into the cover plate injection mold for injection molding, so that the cover plate body 1 and the various bushings 2 form a whole), forming a plastic cover plate. The density of plastic is only 1 / 4 to 1 / 3 that of metal, and the raw material cost is significantly lower than that of metal. The reduction in material and processing costs results in significant weight reduction, effectively reducing the overall weight of the electronic control cover plate. In terms of comprehensive benefits, vehicle weight reduction will further reduce fuel and electricity consumption, lower operating costs, and has advantages in recycling and environmental protection: the plastic has a high recycling rate, the industrial chain market is mature, and it complies with national environmental protection policy requirements.
[0049] Specifically, the cover plate body 1 is injection molded from a composite material of PA66 (polyhexamethylene adipamide) and GF50 (50% glass fiber reinforced). The PA66 and GF50 composite material is a high-performance composite material made by adding 50% glass fiber to PA66 plastic. It possesses strong impact resistance, resistance to thermal aging and oxidation, excellent oil resistance, heat resistance, and wear resistance. Its tensile modulus is 16700 MPa, tensile strength can reach 225 MPa, flexural modulus is 14500 MPa, and flexural strength can reach 345 MPa, meeting the performance requirements for motor use.
[0050] In one embodiment, Figure 2 This is a schematic diagram of the structure of a cover plate body with a sealing strip according to an embodiment of this application. Figure 3 This is a schematic diagram showing the height of the sealing strip according to an embodiment of this application. Figure 4 This is a schematic diagram illustrating the width of the sealing strip according to an embodiment of this application. Figure 5 This is a schematic diagram showing the width of the sealing groove according to an embodiment of this application. Figure 6 This is a schematic diagram showing the depth of the sealing groove according to an embodiment of this application, as follows: Figure 2-6 As shown, the cover body 1 includes a sealing groove 4, which is designed to conform to the contour of the mating surface of the electronic control plastic cover body 1. The automotive electronic control cover also includes a sealing strip 5, which is installed in the sealing groove 4. Common electronic control metal covers are basically made of aluminum alloy and use a flat adhesive coating process for dust and water sealing. Therefore, the plastic cover body 1 requires a sealing strip 5 to be embedded in the electronic control cover body 1. The sealing strip 5 plays a sealing role to achieve dust and water protection, ensuring that dust and water cannot enter the motor and electronic control assembly 8.
[0051] The sealing strip 5 has a height of 2 mm to 2.1 mm and a width of 4 mm to 4.1 mm; the sealing groove 4 has a depth of 0.5 mm to 0.6 mm and a width of 4.2 mm to 4.3 mm.
[0052] Among them, sealing strip 5 is made of hydrogenated nitrile butadiene rubber (HNBR). It can meet specific motor oil requirements and operating temperature ranges (-40℃ to 150℃). Hydrogenated nitrile butadiene rubber (HNBR) is a widely used rubber material with highly saturated elastomers, obtained by hydrogenating nitrile butadiene rubber. It has excellent oil resistance. The hydrogenated nitrile butadiene rubber (HNBR) involved in this application has high and reliable resistance to compression set, and it also possesses heat resistance, aging resistance, and corrosion resistance, making its sealing performance outstanding.
[0053] Furthermore, depending on the performance of the automotive motor and electronic control assembly 8 to be installed on the electronic control cover (e.g., the performance of the motor), the sealing strip 5 can also use other rubber materials, such as nitrile rubber (NBR) and ethylene propylene diene monomer (EPDM).
[0054] In one embodiment, Figure 7 As shown in one embodiment of this application Figure 1 Schematic diagram of section AA, Figure 8 As shown in one embodiment of this application Figure 1 A schematic diagram of the BB cross section, as shown below. Figure 1-8 As shown, the plurality of bushings 2 include: a first bushing 21 and a second bushing 22. There are multiple first bushings 21 distributed on the cover body 1, and there may be one second bushing 22. The second bushing 22 is longer than the first bushing 21. The first bushing 21 and the second bushing 22 are cylinders with internal threads, which are used to cooperate with the first fastener to detachably connect the cover body 1 to the housing 9 of the automotive motor and electronic control assembly 8.
[0055] The first bushing 21 and the second bushing 22 can be made of No. 30 steel, which has high strength and hardness and good toughness. They are distributed on the cover plate body 1. The first fastener can be an M6 hexagonal flange bolt (a bolt with a hexagonal head and a nominal diameter of 6 mm). The first bushing 21 and the second bushing 22 act as bolt through holes and cooperate with the M6 hexagonal flange bolts so that the electronic control cover plate can be smoothly assembled onto the housing 9 of the automotive motor and electronic control assembly 8. Since the "installation position of the first fastener that mates with the second bushing 22" is higher than the "installation position of the first fastener that mates with the first bushing 21", the lengths of the first bushing 21 and the second bushing 22 are not the same, with the second bushing 22 being longer than the first bushing 21.
[0056] Furthermore, the plurality of bushings 2 also includes a third bushing 23, which can be a single unit. The third bushing 23 is a cylinder with internal threads, serving as a threaded hole for the electronic control cover to mate with a second fastener, allowing for detachable installation of the cover body 1 to the automotive wiring harness. The second fastener can be a bolt.
[0057] In one embodiment, such as Figure 1 As shown, the automotive electronic control cover also includes: a safety cover 6, the cover body 1 is provided with an installation window 7, the installation window 7 is used to facilitate the maintenance, repair or disassembly of the device inside the housing when the automotive electronic control cover is connected to the housing of some equipment; the safety cover 6 covers the installation window 7, and the cover body 1 and the safety cover 6 are detachably connected; the safety cover 6 is used to prevent dust and other foreign objects from entering the installation window 7.
[0058] Furthermore, the plurality of bushings 2 also includes: a fourth bushing 24, which has multiple cylindrical parts with internal threads, distributed on the safety cover plate 6, for cooperating with the third fastener to detachably connect the cover plate body 1 to the safety cover plate 6; wherein, the fourth bushing 24 is an M5 threaded bushing 2 made of No. 30 steel, which mates with the four bolt holes on the safety cover plate 6 to facilitate the installation of the safety cover plate 6; wherein, the third bushing 23 and the fourth bushing 24 have different bushing lengths, with the third bushing 23 being shorter than the fourth bushing 24.
[0059] In one embodiment, Figure 9 This is a schematic diagram illustrating the thickness of the cover plate body according to an embodiment of this application, as shown below. Figure 9 As shown, the thickness of the cover plate body 1 is 2.5 mm. Common electrical control covers are metal covers, such as aluminum alloy covers, with a wall thickness generally designed to be 3.5 mm. Therefore, compared with metal covers, the present application is significantly lighter. Generally, injection molds are cheaper than metal molds, which also reduces costs in terms of molds.
[0060] In one embodiment, this application also provides a motor control assembly 8. Figure 10 This is a schematic diagram illustrating the installation of an automotive electronic control cover and a motor-electric control assembly according to an embodiment of this application. Figure 11 As shown in one embodiment of this application Figure 10 Top view, Figure 12 As shown in one embodiment of this application Figure 10 Installation space diagram, such as Figure 10-12 As shown, the motor and electronic control assembly 8 includes: a housing 9, a filter 10 is provided inside the housing 9, and the motor and electronic control assembly 8 also includes the automotive electronic control cover plate described in any of the above embodiments; the electronic control cover plate covers the filter 10, and the cover plate body 1 and the housing 9 are detachably connected by a bushing 2. The motor and electronic control assembly 8 can be an electronic control box, a motor, etc.
[0061] Specifically, when the motor control assembly 8 is a motor, a high-voltage wiring harness is installed on the motor housing 9. One side of the control cover is flush with the high-voltage wiring harness and is located on the surface of the housing 9. The cover body 1 is installed on the motor housing 9 with 10 M16*12 (i.e., part 5-10xM6*12) bolts. The sealing strip 5 contacts the surface of the housing 9, providing a seal to prevent dust and water ingress, ensuring that dust and other foreign objects do not enter the motor control box. The cover body 1 has an installation window 7. The filter 10 is installed in the housing 9 within the installation window 7 with bolts. The safety cover 6 is fixed to the cover body 1 with 6-4xM5*10 bolts, covering the installation window 7 and ensuring that dust, water, etc., cannot enter the filter 10.
[0062] This application integrates the cover body 1 and multiple different bushings 2 into a single injection molded unit (i.e., using an insert molding process, the bushings 2 are placed into the cover injection mold for injection molding, making the cover body 1 and the different bushings 2 a whole), forming a plastic automotive electronic control cover. The cover body 1 has an embedded sealing strip 5, which, when installed with the housing 9 of the motor and electronic control assembly 8, provides dustproof and waterproof sealing through connectors. Compared to conventional metal covers, this automotive electronic control cover is lighter, lower in cost, and offers stable and reliable dustproof and waterproof sealing performance. In practical applications, the plastic properties can be adjusted through modification techniques such as filling and foaming. For example, the use of micro-foaming technology can reduce weight by 10%-20% while meeting the strength requirements of the motor and electronic control assembly 8, thus reducing the amount of plastic material used.
[0063] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other. The above are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A cover for automotive electronic control systems, characterized in that, include: Cover plate body; The cover plate body is made of plastic. Multiple bushings are embedded in the cover plate body, and the cover plate body and the multiple bushings are integrally formed; The plurality of bushings includes: a first bushing and a second bushing; The second bushing is longer than the first bushing, and both the first and second bushings are cylinders with internal threads; the first and second bushings are used to cooperate with the first fastener to detachably connect the cover plate body to the housing of the automotive motor and electronic control assembly.
2. The automotive electronic control cover plate according to claim 1, characterized in that, The cover plate body includes: a sealing groove; The automotive electronic control cover also includes a sealing strip, which is installed in the sealing groove.
3. The automotive electronic control cover plate according to claim 2, characterized in that, The sealing strip is made of hydrogenated nitrile rubber.
4. The automotive electronic control cover plate according to claim 1, characterized in that, The plurality of bushings also includes: The third bushing is a cylinder with internal threads. The third bushing is used to cooperate with the second fastener to detachably install the cover plate body to the automotive wiring harness.
5. The automotive electronic control cover plate according to claim 1, characterized in that, The plurality of bushings also includes: The fourth bushing is a cylinder with internal threads. The fourth bushing is used to cooperate with the third fastener to detachably connect the cover plate body and the safety cover plate.
6. The automotive electronic control cover plate according to claim 1, characterized in that, The cover plate body is provided with an installation window; The automotive electronic control cover also includes a safety cover, which covers the installation window, and the cover body and the safety cover are detachably connected.
7. The automotive electronic control cover plate according to claim 1, characterized in that, The thickness of the cover plate body is 2.5 mm.
8. A motor control assembly, characterized in that, The assembly includes a housing, within which a filter is provided, and the motor control assembly further includes an automotive electronic control cover plate as described in any one of claims 1-7; the automotive electronic control cover plate covers the filter, and the cover plate body of the automotive electronic control cover plate is detachably connected to the housing via the bushing.