Vehicle body structure with electromagnetic shielding function

Abstract

The invention discloses a vehicle body structure with an electromagnetic shielding function, which comprises a vehicle body, a charging seat and a high-voltage wire harness are arranged on the vehicle body, and a metal plate structure for electromagnetic shielding is arranged on the inner side of the vehicle body corresponding to the charging seat and the high-voltage wire harness. The vehicle body comprises a vehicle body column body and a wheel cover body, and the metal plate structure is connected with the vehicle body column body and the wheel cover body to form a shielding isolation layer structure. The electromagnetic shielding function is achieved, and the NVH performance can be improved; a D column and a wheel cover can be connected to form a supporting structure, the modality and rigidity of a vehicle body are improved, and road noise is reduced by about 0.21 dBA.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle body structures, and in particular to a vehicle body structure with an electromagnetic shielding function. Background Art

[0002] The popularization of electric vehicles is mainly distinguished from traditional vehicles in that the input and output methods of power are different. Traditional vehicles are powered by gasoline and engines, which have a low degree of interference with the transmission of vehicle computers and sensor signals; electric vehicles are powered by power batteries and motors, which have a higher voltage. A large number of electromagnetic interference signals will be generated inside the high-voltage wiring harness. If these signals cannot be well shielded, they will interfere with the electronic components in the vehicle, which may cause very serious consequences.

[0003] At present, the electromagnetic shielding solution in the industry is that the high-voltage wire harness has its own shielding layer, which is relatively costly. With the development of the automobile industry, the NVH performance of automobiles is also an aspect that consumers are concerned about. Improving NVH performance through a reasonable body structure is also a focus in the automobile development process. Combining the above two points, a structure with electromagnetic shielding function and improved NVH performance is now needed to meet the demand.

[0004] For example, patent CN206134295U discloses a graphene electromagnetic shielding high-voltage wire harness, which includes several internal high-voltage conductive core wires, a polyethylene insulation layer, a polytetrafluoroethylene 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, the polyethylene insulation layer is wrapped around the polytetrafluoroethylene plastic insulation layer, a flame-retardant polyester braided reinforcement layer is arranged around the polytetrafluoroethylene plastic insulation layer, the flame-retardant polyester braided reinforcement layer is coated with a graphene film layer, and the graphene film layer is wrapped around a wear-resistant outer sheath layer; two wire threading protection devices are installed at the steel plate threading position of the graphene electromagnetic shielding high-voltage wire harness; the structure is complex and the cost is relatively high. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a vehicle body structure with electromagnetic shielding function, which has good electromagnetic shielding function and improves NVH performance.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The vehicle body structure with electromagnetic shielding function comprises a vehicle body, wherein a charging seat and a high-voltage wire harness are arranged on the vehicle body, and a metal sheet structure for electromagnetic shielding is arranged inside the vehicle body corresponding to the charging seat and the high-voltage wire harness.

[0008] Further:

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

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

[0011] The vehicle body column is a D-pillar body, the metal sheet structure is a wheel cover connecting plate body, and the edges of the wheel cover connecting plate body are respectively connected to the D-pillar body and the wheel cover body through fasteners.

[0012] A wheel cover connecting plate body pre-hanging structure hung on the D-pillar body is provided on one side edge of the wheel cover connecting plate body.

[0013] A domain controller installation structure is provided on the wheel cover connecting plate body.

[0014] A wiring harness installation hole is provided on the wheel cover connecting plate body.

[0015] There is a gap between the wheel cover connecting plate body and the side outer plate of the vehicle body to form a cavity structure.

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

[0017] A group of heat dissipation holes are provided on the wheel cover connecting plate body 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 remove its own shielding layer, reducing the cost of the bicycle by about 200 yuan;

[0021] 3. The connecting plate can connect the D-pillar and the wheel arch to form a supporting structure, improve the body modality and stiffness, and reduce road noise by about 0.21dBA;

[0022] 4. The wheel cover connecting plate body can provide installation functions for various parts such as domain controllers and wiring harnesses, with integrated positioning and compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a brief description of the contents and symbols in the drawings of this specification:

[0024] Figure 1 It is a schematic diagram of the peripheral matching of the wheel cover connecting plate of the present invention.

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

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

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

[0028] In the figure:

[0029] 10 is a wheel cover connecting plate body, 101 is a wheel cover connecting plate body pre-hanging structure, 102 is a wheel cover connecting plate body installation positioning hole, 103 is a wheel cover connecting plate body installation through hole, 104 is a wheel cover connecting plate body installation auxiliary positioning hole, 105 is a domain controller installation bolt, 106 is a weight reduction heat dissipation hole, 107 and 108 are wiring harness installation holes;

[0030] 20 is the D-pillar body, 201 is the pre-hanging structure installation hole;

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

[0032] 40 is a side outer panel;

[0033] 50 is the back-end domain controller;

[0034] 60 is a wheel cover body;

[0035] 70 is a high voltage wire harness. DETAILED DESCRIPTION

[0036] Various terms are used throughout this disclosure to describe the physical shape or arrangement of features. Many of these terms are used to describe features that conform to a cylindrical or substantially cylindrical geometry with the feature as the radius and a central axis perpendicular to the radius. Unless a different meaning is specified, the terms are given the following meanings. The terms "longitudinal," "longitudinal," "axial," and "axially" 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 "inwardly" refer to a direction, dimension, or orientation extending in a radial direction toward the central axis. The terms "outward" and "outwardly" refer to a direction, dimension, or orientation extending in a radial direction away from the central axis.

[0037] In the specification, relative terms such as "horizontal", "vertical", "upward", "downward", "top" and "bottom" and derivatives thereof (e.g., "horizontal", "downward", "upward", etc.) should be interpreted as referring to the direction being described or shown in the drawings being discussed. These relative terms are for convenience of description and are generally not intended to require a particular orientation.

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

[0039] like Figures 1 to 4 As shown, the vehicle body structure with electromagnetic shielding function includes a vehicle body, on which a charging seat and a high-voltage wiring harness are provided, and a metal sheet structure for electromagnetic shielding is provided on the inner side of the vehicle body corresponding to the charging seat 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 body pillars and wheel arch bodies. The metal sheet structure is connected to the body pillars and wheel arch bodies to form a shielding isolation layer structure, which isolates the electromagnetic interference signal so as not to affect the normal operation of the electronic components in the vehicle. At this time, the corresponding high-voltage wiring harness cancels the corresponding electromagnetic shielding layer, thereby reducing the cost of a single vehicle by about 200 yuan.

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

[0042] In the present invention, the wheel arch connecting plate is an assembly part, which is connected to the D-pillar and the wheel arch by bolts to form a supporting structure to improve the rigidity and mode of the vehicle body, thereby reducing road noise, reducing road noise by about 0.21dBA, and improving NVH performance.

[0043] A wheel cover connecting plate body pre-hanging structure 101 hung on the D-pillar body is provided on one side edge of the wheel cover connecting plate body. Preferably, the D-pillar body is provided with a flange, and a pre-hanging structure mounting hole 201 is provided on the flange. The wheel cover connecting plate body pre-hanging structure is a bent hook structure matched with the pre-hanging structure mounting hole, and the bent hook is provided on the upper side of the wheel cover connecting plate body. When the wheel cover connecting plate body is installed, it is hung on the D-pillar body flange through the bent hook structure on the edge of the wheel cover 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-hanging structure, and then the wheel arch connecting plate is installed on 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, isolating the cabin and the high-voltage wiring harness, and at the same time serving as a supporting structure to improve the vehicle body stiffness and mode.

[0045] The wheel cover connecting plate body is provided with a domain controller installation structure, and a group of heat dissipation holes are provided on the wheel cover connecting plate body corresponding to the domain controller installation position, which can reduce the weight of the wheel cover connecting plate body; the wheel cover connecting plate body is provided with a harness installation hole. The wheel cover connecting plate body can provide installation functions for various parts such as domain controllers and harnesses, and one part can realize multiple functions.

[0046] In the present invention, the electromagnetic shielding layer of the automobile 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 part, and its own pre-hanging structure is designed. The operator can pre-hang it on the car body and connect it with the D-pillar and the wheel arch by bolts to form a supporting structure to improve the rigidity and mode of the car body, thereby reducing road noise and improving NVH performance.

[0047] Preferred embodiments of the present invention are:

[0048] First, the design of the wheel cover connecting plate body 10 is completed. Since it is an assembly part, the wheel cover connecting plate body pre-hanging structure 101 needs to be designed. The assembly of parts needs to consider the installation and positioning. The wheel cover connecting plate body installation positioning hole 102 and the wheel cover connecting plate body installation auxiliary positioning hole 104 are added to ensure the position accuracy of the parts during assembly. The remaining three wheel cover connecting plate body installation through holes 103 are designed as through holes, and the hole diameter is enlarged to avoid the hole blocking. The fixed connection is completed through multiple connection points 30, and the structure is reliable.

[0049] The wheel cover connecting plate body provides a mounting point for the domain controller, and four domain controller mounting bolts 105 are added to provide pre-hanging and mounting points for the domain controller. A number of 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 wiring harness mounting holes 107 and 108, which can provide relevant mounting points for the wiring harness and reduce the number of wiring harness positioning brackets used.

[0051] In the vehicle assembly workshop, the charging seat and the high-voltage wiring harness are first assembled with the vehicle body, and then the wheel cover connecting plate body 10 made of metal material is mounted on the pre-mounting structure mounting hole 201 of the D-pillar body through the wheel cover connecting plate body pre-mounting structure 101, and the connecting nut 302 of the wheel cover connecting plate body mounting positioning hole 102 is tightened with the connecting bolt 301, and then the wheel cover connecting plate body mounting auxiliary positioning hole 104 is tightened, and then the three wheel cover connecting plate body mounting holes 103 are tightened in sequence;

[0052] The rear domain controller 50 can be pre-hung on the domain controller mounting bolts 105 using its own through holes, and then tightened with nuts in turn; the wiring harness is clamped to the wiring harness mounting holes 107 and 108, and the assembly work is completed.

[0053] The high-voltage wire harness 70 cancels the corresponding electromagnetic shielding layer, and the D-pillar, the wheel cover connecting plate, and the wheel cover body 60 form a closed metal shielding isolation layer to isolate the electromagnetic interference signal, so as not to affect the normal operation of the electronic components in the vehicle;

[0054] At the same time, the wheel arch connecting plate connects the D-pillar and the wheel arch to form a supporting structure, which can improve the rigidity and mode of the vehicle body, thereby reducing road noise and improving NVH performance. Due to the limited space inside the vehicle, the wheel arch connecting plate can also provide installation functions for other parts, realizing multiple functions of one part.

[0055] The above is only an explanation of the 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 is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they 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 seat and a high-voltage wiring harness are provided on the vehicle body, and wherein: A metal sheet structure for electromagnetic shielding is provided on the inner side of the vehicle body corresponding to the charging seat and the high-voltage wiring harness.

2. The vehicle body structure with electromagnetic shielding function as claimed in claim 1, characterized in that: The vehicle body includes a vehicle body column and a wheel cover body, and the metal plate structure is connected with the vehicle body column and the wheel cover body to form a shielding isolation layer structure.

3. The vehicle body structure with electromagnetic shielding function as claimed in claim 1, characterized in that: The metal sheet structure is a stamped sheet structure.

4. The vehicle body structure with electromagnetic shielding function as claimed in claim 2, characterized in that: The vehicle body column is a D-pillar body, the metal sheet structure is a wheel cover connecting plate body, and the edges of the wheel cover connecting plate body are respectively connected to the D-pillar body and the wheel cover body through fasteners.

5. The vehicle body structure with electromagnetic shielding function as claimed in claim 4, characterized in that: A wheel cover connecting plate body pre-hanging structure hung on the D-pillar body is provided on one side edge of the wheel cover connecting plate body.

6. The vehicle body structure with electromagnetic shielding function as claimed in claim 4, characterized in that: A domain controller installation structure is provided on the wheel cover connecting plate body.

7. The vehicle body structure with electromagnetic shielding function as claimed in claim 4, characterized in that: A wiring harness installation hole is provided on the wheel cover connecting plate body.

8. The vehicle body structure with electromagnetic shielding function as claimed in claim 4, characterized in that: There is a gap between the wheel cover connecting plate body and the side outer plate of the vehicle body to form a cavity structure.

9. The vehicle body structure with electromagnetic shielding function as claimed in claim 5, characterized in that: The D-pillar body is provided with a flange, and a pre-hanging structure mounting hole is provided on the flange. The pre-hanging structure of the wheel cover connecting plate body is a bent hook structure that matches the pre-hanging structure mounting hole.

10. The vehicle body structure with electromagnetic shielding function as claimed in claim 6, characterized in that: A group of heat dissipation holes are provided on the wheel cover connecting plate body corresponding to the domain controller installation position.

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