A vehicle body structure with electromagnetic shielding function

Abstract

This invention discloses a vehicle body structure with electromagnetic shielding function, including a vehicle body. The vehicle body has a charging dock and a high-voltage wiring harness. A metal sheet structure for electromagnetic shielding is provided inside the vehicle body corresponding to the charging dock and the high-voltage wiring harness. The vehicle body includes a body pillar and wheel arch bodies. The metal sheet structure is connected to the body pillar and wheel arch bodies to form a shielding isolation layer structure. It has electromagnetic shielding function and can improve NVH performance; it can connect the D-pillar and wheel arch to form a support structure, improving vehicle body modal characteristics and stiffness, and reducing road noise by approximately 0.21 dBA.

Description

Technical Field

[0001] This invention relates to the field of vehicle body structure technology, and in particular to a vehicle body structure with electromagnetic shielding function. Background Technology

[0002] The widespread adoption of electric vehicles differs from traditional cars primarily in their power input and output methods. Traditional cars are powered by gasoline and engines, resulting in relatively low interference with vehicle infotainment and sensor signal transmission. Electric vehicles, on the other hand, are powered by batteries and motors, which operate at higher voltages. The high-voltage wiring harnesses generate significant electromagnetic interference signals. If these signals are not properly shielded, they can interfere with the vehicle's electronic components, potentially leading to very serious consequences.

[0003] Currently, the industry's electromagnetic shielding solution involves high-voltage wiring harnesses with built-in shielding layers, which is relatively expensive. With the development of the automotive industry, the NVH performance of automobiles is also a concern for consumers, and improving NVH performance through a reasonable body structure is a key focus in the automotive development process. Combining the above two points, there is a need for a structure with electromagnetic shielding function that also improves NVH performance to meet the requirements.

[0004] For example, patent CN206134295U discloses a graphene electromagnetic shielded high-voltage wire harness, which includes several high-voltage conductive core wires, a polyethylene insulation layer, a polytetrafluoroethylene (PTFE) plastic insulation layer, a flame-retardant polyester braided reinforcement layer, a graphene film layer, and a wear-resistant outer sheath layer. The polyethylene insulation layer wraps all the high-voltage conductive core wires, and the polyethylene insulation layer is surrounded by a PTFE plastic insulation layer. A flame-retardant polyester braided reinforcement layer is set around the PTFE plastic insulation layer. The flame-retardant polyester braided reinforcement layer is coated with a graphene film layer, and the graphene film layer is surrounded by a wear-resistant outer sheath layer. Two wire-passing protection devices are installed at the steel plate penetration position of the graphene electromagnetic shielded high-voltage wire harness. The structure is complex and the cost is relatively high. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a vehicle body structure with electromagnetic shielding function, which has good electromagnetic shielding capabilities and improves NVH performance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] The vehicle body structure with electromagnetic shielding function includes a vehicle body, on which a charging socket and a high-voltage wiring harness are provided. A metal sheet structure for electromagnetic shielding is provided on the inner side of the vehicle body corresponding to the charging socket and the high-voltage wiring harness.

[0008] Further:

[0009] The vehicle body includes a body pillar and a wheel arch body, and a metal plate structure is connected to the body pillar and wheel arch body to form a shielding and isolation layer structure.

[0010] The metal sheet structure is a stamped sheet structure.

[0011] The vehicle body pillar is the D-pillar body, and the metal sheet structure is the wheel arch connecting plate body. The edge of the wheel arch connecting plate body is connected to the D-pillar body and the wheel arch body respectively by fasteners.

[0012] One edge of the wheel arch connecting plate body is provided with a pre-hanging structure for the wheel arch connecting plate body that hangs on the D-pillar body.

[0013] The wheel cover connecting plate body is equipped with a domain controller mounting structure.

[0014] The wheel cover connecting plate body is provided with wire harness mounting holes.

[0015] The wheel arch connecting plate body and the side outer panel of the vehicle body have a gap to form a cavity structure.

[0016] The D-pillar body is provided with a flange, and the flange is provided with a pre-mounted structure mounting hole. The pre-mounted structure of the wheel cover connecting plate body is a bent hook structure that cooperates with the pre-mounted structure mounting hole.

[0017] The wheel cover connecting plate body has a set of heat dissipation holes corresponding to the domain controller installation position.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. It has electromagnetic shielding function and can improve NVH performance;

[0020] 2. The high-voltage wiring harness can eliminate its own shielding layer, reducing costs by approximately 200 yuan per vehicle;

[0021] 3. The connecting plate can connect the D-pillar and wheel arch to form a support structure, improving the body modality and rigidity, and reducing road noise by about 0.21 dBA;

[0022] 4. The main body of this wheel cover connecting plate can provide installation functions for various parts such as domain controllers and wiring harnesses, with integrated positioning and a compact structure. Attached Figure Description

[0023] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0024] Figure 1 This is a schematic diagram showing the matching of the periphery of the wheel cover connecting plate of the present invention.

[0025] Figure 2 For along Figure 1 Schematic diagram of section AA.

[0026] Figure 3 This is a schematic diagram of the wheel cover connecting plate body of the present invention.

[0027] Figure 4 for Figure 1 Enlarged diagram of point B in the middle.

[0028] In the picture:

[0029] 10 is the wheel cover connecting plate body, 101 is the pre-mounted structure of the wheel cover connecting plate body, 102 is the wheel cover connecting plate body mounting positioning hole, 103 is the wheel cover connecting plate body mounting through hole, 104 is the wheel cover connecting plate body mounting auxiliary positioning hole, 105 is the domain controller mounting bolt, 106 is the weight reduction and heat dissipation hole, and 107 and 108 are the wire harness mounting holes.

[0030] 20 is the D-pillar body, and 201 is the mounting hole for the pre-installed structure;

[0031] 30 is the connection point, 301 is the connecting bolt, and 302 is the connecting nut;

[0032] 40 refers to the outer side panel;

[0033] 50 is the rear domain controller;

[0034] 60 is the wheel cover body;

[0035] 70 is a high-voltage wiring harness. Detailed Implementation

[0036] Throughout this disclosure, various terms are used to describe the physical shape or arrangement of features. Many of these terms are used to describe features conforming to a cylindrical or generally cylindrical geometry with the feature as its radius and a central axis perpendicular to that radius. Unless otherwise specified, the terms are given the following meanings: The terms “longitudinal,” “longitudinal,” “axial,” and “axial” refer to a direction, dimension, or orientation parallel to the central axis. The terms “radial” and “radially” refer to a direction, dimension, or orientation perpendicular to the central axis. The terms “inward” and “inward” refer to a direction, dimension, or orientation extending radially toward the central axis. The terms “outward” and “outward” refer to a direction, dimension, or orientation extending radially away from the central axis.

[0037] In this specification, relative terms such as “horizontal,” “vertical,” “upward,” “downward,” “top,” and “bottom,” and their derivatives (e.g., “horizontal,” “downward,” “upward,” etc.) should be interpreted as referring to the direction described or the direction shown in the accompanying drawings. These relative terms are for ease of description and are not generally intended to require a specific direction.

[0038] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0039] like Figures 1 to 4 As shown, the vehicle body structure with electromagnetic shielding function includes a vehicle body, a charging socket and a high-voltage wiring harness on the vehicle body, and a metal sheet structure for electromagnetic shielding on the inner side of the vehicle body corresponding to the charging socket and the high-voltage wiring harness. The metal sheet structure forms a metal shielding structure to isolate electromagnetic interference signals.

[0040] The vehicle body includes the body pillars and wheel arches. The metal sheet structure is connected to the body pillars and wheel arches to form a shielding and isolation layer structure, which isolates electromagnetic interference signals and does not affect the normal operation of electronic components inside the vehicle. At this time, the corresponding electromagnetic shielding layer of the high-voltage wiring harness is eliminated, which reduces the cost by about 200 yuan per vehicle.

[0041] The metal sheet structure is a stamped sheet structure, which is simple to manufacture and relatively low in cost. The body pillar is the D-pillar body 20, and the metal sheet structure is the wheel arch connecting plate body 10. The edges of the wheel arch connecting plate body are connected to the D-pillar body and the wheel arch body respectively by fasteners.

[0042] In this invention, the wheel arch connecting plate is an assembly that is connected to the D-pillar and wheel arch by bolts to form a support structure that improves the rigidity and modal characteristics of the vehicle body, thereby reducing road noise by approximately 0.21 dBA and improving NVH performance.

[0043] One edge of the wheel arch connecting plate body is provided with a pre-hanging structure 101 for hanging on the D-pillar body. Preferably, the D-pillar body has a flange with a pre-hanging structure mounting hole 201. The pre-hanging structure of the wheel arch connecting plate body is a bent hook structure that mates with the pre-hanging structure mounting hole, and the bent hook is located on the upper side of the wheel arch connecting plate body. When installing the wheel arch connecting plate body, it is hung on the flange of the D-pillar body through the bent hook structure on the edge of the wheel arch connecting plate body, that is, the operator can pre-hang it on the vehicle body for easy installation and fixation.

[0044] There is a gap between the wheel arch connecting plate body and the side outer panel 40 of the vehicle body to form a cavity structure; the wheel arch connecting plate body is initially connected to the vehicle body through the pre-attached structure, and then the wheel arch connecting plate is installed to the D pillar and the wheel arch with bolts; the three parts of the D pillar, wheel arch connecting plate and wheel arch form a metal shielding isolation layer to isolate the high voltage wiring harness inside the compartment, and at the same time serve as a support structure to improve the rigidity and modal characteristics of the vehicle body.

[0045] The wheel cover connecting plate body is equipped with a domain controller mounting structure. A set of heat dissipation holes are provided on the wheel cover connecting plate body corresponding to the domain controller mounting position, which can reduce the weight of the wheel cover connecting plate body. The wheel cover connecting plate body also has wiring harness mounting holes. This wheel cover connecting plate body can provide mounting functions for various components such as domain controllers and wiring harnesses, thus achieving multiple functions from a single component.

[0046] In this invention, the electromagnetic shielding layer of the automotive high-voltage wiring harness can be eliminated to reduce costs. A metal wheel arch connecting plate is added between the high-voltage wiring harness and the cabin to shield electromagnetic interference. At the same time, the wheel arch connecting plate is an assembly accessory with a pre-mounted structure. Operators can pre-mount it onto the vehicle body and connect it to the D-pillar and wheel arch with bolts to form a support structure that improves the rigidity and modal characteristics of the vehicle body, thereby reducing road noise and improving NVH performance.

[0047] A preferred embodiment of the present invention is as follows:

[0048] First, the design of the wheel cover connecting plate body 10 is completed. Since it is an assembly part, the pre-hanging structure 101 of the wheel cover connecting plate body needs to be designed. The assembly of the parts needs to take into account the installation and positioning. The wheel cover connecting plate body mounting positioning hole 102 and the wheel cover connecting plate body mounting auxiliary positioning hole 104 are added to ensure the positional accuracy of the parts during assembly. The other three wheel cover connecting plate body mounting through holes 103 are designed as through holes. The hole diameter is increased to avoid the situation of the hole being blocked. The fixed connection is completed through multiple connection points 30, and the structure is reliable.

[0049] The wheel cover connecting plate provides mounting points for the domain controller. Four domain controller mounting bolts 105 are added to provide pre-mounting and installation points for the domain controller. Several weight-reducing heat dissipation holes 106 are designed on the back of the domain controller to improve the heat dissipation effect of the domain controller and reduce its weight.

[0050] The wheel cover connecting plate body is provided with wire harness mounting holes 107 and 108, which can provide relevant mounting points for the wire harness and reduce the number of wire harness positioning brackets used.

[0051] In the assembly workshop, the charging socket and high-voltage wiring harness are first assembled with the vehicle body. Then, the metal wheel cover connecting plate body 10 is mounted on the pre-mounting structure mounting hole 201 of the D-pillar body through the pre-mounting structure 101 of the wheel cover connecting plate body. The connecting nuts 302 are tightened by the connecting bolts 301 to the mounting positioning holes 102 of the wheel cover connecting plate body. Then, the mounting auxiliary positioning holes 104 of the wheel cover connecting plate body are tightened. Finally, the three mounting through holes 103 of the wheel cover connecting plate body are tightened in sequence.

[0052] The domain controller 50 can be pre-attached to the domain controller mounting bolt 105 using its own vias, and then tightened with nuts in sequence; then the wiring harness is clipped to the wiring harness mounting holes 107 and 108, thus completing the assembly work.

[0053] The high-voltage wiring harness 70 has its corresponding electromagnetic shielding layer removed. Instead, the D-pillar, wheel arch connecting plate, and wheel arch body 60 form a closed metal shielding isolation layer to isolate electromagnetic interference signals, thus preventing them from affecting the normal operation of electronic components inside the vehicle.

[0054] Meanwhile, the wheel arch connecting plate connects the D-pillar to the wheel arch, forming a support structure that can improve the rigidity and modal characteristics of the vehicle body, thereby reducing road noise and improving NVH performance. Due to the limited interior space, this wheel arch connecting plate can also provide installation functions for other parts, realizing multiple functions of one part.

[0055] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0056] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A vehicle body structure with electromagnetic shielding function, comprising a vehicle body, wherein a charging socket and a high-voltage wiring harness are provided on the vehicle body, characterized in that: The inner side of the vehicle body is provided with a metal sheet structure for electromagnetic shielding corresponding to the charging socket and high-voltage wiring harness. The vehicle body includes a body pillar and a wheel arch body. A metal sheet structure is connected to the body pillar and wheel arch body to form a shielding and isolation layer structure. The metal sheet structure is a stamped sheet structure. The body pillar is a D-pillar body, and the metal sheet structure is a wheel arch connecting plate body. The edge of the wheel arch connecting plate body is connected to the D-pillar body and the wheel arch body respectively by fasteners. One side edge of the wheel arch connecting plate body is provided with a pre-attached structure for hanging on the D-pillar body. The wheel arch connecting plate body and the side panel of the vehicle body have a gap to form a cavity structure; the wheel arch connecting plate body is initially connected to the vehicle body through the pre-attached structure, and then the wheel arch connecting plate is installed to the D-pillar and the wheel arch with bolts; the three parts of the D-pillar, wheel arch connecting plate and wheel arch form a metal shielding isolation layer to isolate the high voltage wiring harness inside the compartment; The electromagnetic shielding layer of the high-voltage wiring harness is removed, and a closed metal shielding isolation layer is formed by the D-post, the wheel cover connecting plate, and the wheel cover body to isolate electromagnetic interference signals. In the assembly workshop, the charging base and high-voltage wiring harness are first assembled with the vehicle body. Then, the metal wheel arch connecting plate body is mounted on the pre-mounting structure mounting hole of the D-pillar body through the pre-mounting structure of the wheel arch connecting plate body. The connecting bolts are passed through the mounting positioning holes of the wheel arch connecting plate body and the connecting nuts are tightened. Then, the mounting auxiliary positioning holes of the wheel arch connecting plate body are tightened. Finally, the three mounting through holes of the wheel arch connecting plate body are tightened in sequence.

2. The vehicle body structure with electromagnetic shielding function as described in claim 1, characterized in that: The wheel cover connecting plate body is equipped with a domain controller mounting structure.

3. The vehicle body structure with electromagnetic shielding function as described in claim 1, characterized in that: The wheel cover connecting plate body is provided with wire harness mounting holes.

4. The vehicle body structure with electromagnetic shielding function as described in claim 1, characterized in that: The D-pillar body is provided with a flange, and the flange is provided with a pre-mounted structure mounting hole. The pre-mounted structure of the wheel cover connecting plate body is a bent hook structure that cooperates with the pre-mounted structure mounting hole.

5. The vehicle body structure with electromagnetic shielding function as described in claim 2, characterized in that: The wheel cover connecting plate body has a set of heat dissipation holes corresponding to the domain controller installation position.

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