Mounting structure for power module and vehicle body provided with the same

Abstract

The present invention relates to a mounting structure for a power module and a vehicle body equipped with the mounting structure. The power module mounting structure includes a front longitudinal beam, a bulkhead, and a mounting bracket. The front longitudinal beam is arranged along the length of the vehicle body. The front longitudinal beam includes a side surface facing inward from the vehicle body and an upper surface connected to the side surface. The bulkhead is mounted within the front longitudinal beam. The mounting bracket is connected to the side surface and upper surface of the front longitudinal beam via the bulkhead, so that the power module can be mounted on the mounting bracket.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2021-0001394 filed on January 6, 2021, the entire contents of which application is incorporated herein for all purposes by this reference. Technical Field

[0003] The present invention relates to a power electric module mounting structure and a vehicle body including the same. More specifically, the present invention relates to a power electric module mounting structure and a vehicle body including the same that can improve collision and noise, vibration, and harshness (NVH) performance while ensuring a secure front trunk space. Background Art

[0004] Globally, research into electric vehicles (EVs) is accelerating in response to emission regulations and demand for environmentally friendly vehicles. Here, electric vehicles can include battery-powered vehicles and hydrogen-based fuel cell vehicles.

[0005] In general pure electric vehicles, development is underway to install the power module on a subframe provided beneath the vehicle. Mounting the power module on a subframe shortens the distance between the subframes and the center of gravity of the power module, which improves durability and noise, vibration, and harshness (NVH) performance.

[0006] However, when vehicle development is performed as a vehicle based on a vehicle mounted with a general internal combustion engine and derived therefrom into an electric vehicle, it may be difficult to mount the subframe, or the mounting cost may increase significantly.

[0007] Therefore, it is possible to consider installing the power module of the derived electric vehicle on the longitudinal beam, but there may be a problem of separation when the vehicle collides.

[0008] Alternatively, the power module could be mounted on the upper body panel. However, in this case, the distance between the subframes and the power module's center of gravity is relatively long, resulting in disadvantages in durability and NVH performance. Furthermore, the power module occupies a relatively large space, which reduces the usable space in the front trunk.

[0009] The information included in this Background section is only intended to enhance understanding of the general background of the invention and should not be taken as an acknowledgment or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. Summary of the Invention

[0010] Various aspects of the present invention are directed to providing a power module mounting structure and a vehicle body including the power module mounting structure, which can improve collision and NVH performance and ensure a front trunk space.

[0011] A power module mounting structure according to various exemplary embodiments of the present invention may include: a front longitudinal beam, a bulkhead, and a mounting bracket, wherein the front longitudinal beam is arranged along the length direction of a vehicle body and includes a side surface formed in the inner direction of the vehicle body and an upper surface connected to the side surface, the bulkhead is mounted inside the front longitudinal beam, and the mounting bracket is connected to the side surface and the upper surface of the front longitudinal beam via the bulkhead so that the power module is mounted on the mounting bracket.

[0012] The partition plate may include a first connection portion for coupling with the mounting bracket; and a second connection portion bent from the first connection portion.

[0013] The partition plate may further include: a connection pipe connected to the first connection portion; and a connection rod mounted on the second connection portion.

[0014] The first connection portion may include a first recessed portion formed with a step portion inwardly.

[0015] The first connection portion may further include a second recess formed to be more recessed inward than the first recess to mount the connection pipe.

[0016] A connection hole may be formed in the second connection portion, and the connection rod may be connected to the connection hole.

[0017] The separator may further include an extension portion bent from the first connection portion.

[0018] The partition may be provided in plural, and the mounting bracket may be connected to at least two of the partitions.

[0019] The mounting bracket may further include a bracket side connection portion connected to the side surface; and a bracket upper connection portion connected to the upper surface.

[0020] A luggage compartment may be formed on an upper portion of the power module.

[0021] An electric vehicle according to various exemplary embodiments of the present invention may include a power module mounting structure.

[0022] According to various exemplary embodiments of the present invention, by mounting the power module on the side member, the size of the power module assembly can be reduced, thereby ensuring space available for the front trunk.

[0023] According to various exemplary embodiments of the present invention, the relative distance between the central axis of the power module and the installation position may be reduced, thereby suppressing the vertical vibration of the power module.

[0024] According to various exemplary embodiments of the present invention, by mounting the power module through the side surface and the upper surface of the longitudinal beam, the rolling characteristics of the power module may be improved.

[0025] In addition, the effects obtained or predicted by the various exemplary embodiments of the present invention will be directly or implicitly included in the detailed description of the various exemplary embodiments of the present invention. That is, the various effects predicted according to the various exemplary embodiments of the present invention will be included in the detailed description described later.

[0026] The methods and apparatus of the present invention have other features and advantages that will be apparent from, or will be described in detail in, the accompanying drawings and subsequent embodiments incorporated herein, which together serve to explain the specific principles of the invention.

[0027] The methods and apparatus of the present invention have other features and advantages that will be apparent from, or will be described in detail in, the accompanying drawings and subsequent embodiments incorporated herein, which together serve to explain the specific principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a top plan view of a power module mounting structure according to various exemplary embodiments of the present invention.

[0029] Figure 2 is a perspective view of a power module mounting structure according to various exemplary embodiments of the present invention.

[0030] Figure 3 It is along Figure 2 A cross-sectional perspective view taken along line III-III.

[0031] Figure 4 and Figure 5 is a perspective view of a partition plate that may be applied to the power module mounting structure according to various exemplary embodiments of the present invention.

[0032] Figure 6 is a cross-sectional view of a vehicle body including a power module mounting structure according to various exemplary embodiments of the present invention.

[0033] Figure 7 is a cross-sectional view of a vehicle body including a typical power module mounting structure.

[0034] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather show a somewhat simplified representation of various features illustrating the basic principles of the invention. The specific design features disclosed herein (including, for example, specific dimensions, orientations, locations, and shapes) will be determined in part by the specific intended application and use environment.

[0035] In the figures, like reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. DETAILED DESCRIPTION

[0036] Reference will now be made in detail to various specific embodiments of the present invention, examples of which are presented in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments of the present invention, it should be appreciated that this description is not intended to limit the present invention to those exemplary embodiments. On the other hand, the present invention is intended to cover not only the exemplary embodiments of the present invention, but also various alternative forms, modifications, equivalent forms, and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0037] In the following detailed description, only certain exemplary embodiments of the present invention have been shown and described, simply by way of illustration.

[0038] As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

[0039] Throughout the specification, components denoted by the same reference numerals represent the same components.

[0040] In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity.

[0041] When a part such as a layer, a film, a region, or a plate is said to be “on” another part, this includes not only the case of being directly above the other part but also the case of having another part in between.

[0042] In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present.

[0043] Throughout the specification, when a part “includes” a certain component, it means that other components may be further included rather than excluding other components, unless there is an explicit description to the contrary.

[0044] Various exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Figure 1 is a top plan view of a power module mounting structure according to various exemplary embodiments of the present invention, Figure 2 is a perspective view of a power module mounting structure according to various exemplary embodiments of the present invention, and Figure 3 It is along Figure 2 A cross-sectional perspective view taken along line III-III.

[0046] refer to Figures 1 to 3 According to various exemplary embodiments of the present invention, a power module mounting structure may include: a front longitudinal beam 20, a bulkhead 30, and a mounting bracket 50. The front longitudinal beam 20 is provided in the length direction of the vehicle body 10. The front longitudinal beam 20 includes a side surface 22 formed in the inner direction of the vehicle body 10 and an upper surface 24 connected to the side surface 22. The bulkhead 30 is installed inside the front longitudinal beam 20. The mounting bracket 50 is connected to the side surface 22 and the upper surface 24 of the front longitudinal beam 20 through the bulkhead 30 to mount the power module 60.

[0047] In a general power module mounting structure, the power module is mounted on the upper portion of the front longitudinal beam or on the upper portion of the front longitudinal beam and the vehicle body, for example, a subframe, and the distance between the subframe and the center of gravity of the power module is relatively long, so that durability and NVH performance may be adversely affected.

[0048] However, in the power module mounting structure according to the exemplary embodiment of the present invention, the power module 60 is mounted on the side surface 22 and the upper surface 24 of the front side member 20 via the module mounting portion 56 and the mounting bracket 50. Accordingly, the connection position between the power module 60 and the front side member 20 can be relatively close, and the height difference between the center of gravity of the power module 60 and the front side member 20 can also be reduced.

[0049] The vehicle according to the exemplary embodiment of the present invention includes the power module 60 and may be an electric vehicle to which the power module mounting structure according to the exemplary embodiment of the present invention is applied.

[0050] The front longitudinal member 20 includes a front inner panel 27 and a front outer panel 28 . The front inner panel 27 includes a side surface 22 , an upper surface 24 , and a lower surface 26 . The front inner panel 27 and the front outer panel 28 may form a closed section, and the bulkhead 30 may be installed in the closed section.

[0051] Figure 4 and Figure 5 is a perspective view of a spacer that may be applied to a power module mounting structure according to various exemplary embodiments of the present invention.

[0052] refer to Figures 2 to 5 The partition plate 30 may include a first connection portion 32 for coupling with the mounting bracket 50 , and a second connection portion 40 bent from the first connection portion 32 .

[0053] The partition plate 30 may further include a connection pipe 34 connected to the first connection portion 32 and a connection rod 42 mounted on the second connection portion 40 .

[0054] The drawings show that the connection pipe 34 is arranged in the direction of the upper surface 24 and the connection rod 42 is arranged in the direction of the side surface 22 thereof, but the present invention is not limited thereto and an opposite arrangement is also possible.

[0055] The first connection portion 32 may include a first recess 36 formed as a step inward. The first recess 36 is formed in the up-down direction of the front side member 20 to increase the up-down strength of the front side member 20.

[0056] The first connection portion 32 may further include a second recess 38 that is formed to be more recessed inward than the first recess 36 to accommodate the connection pipe 34. The second recess 38 can accommodate the connection pipe 34 without any additional structure. In addition, the second recess 38 is more recessed inward than the first recess 36, and the connection portion between the second recess 38 and the first recess 36 can support the lower portion of the connection pipe 34.

[0057] For example, a connecting bolt 35 is inserted into the connecting pipe 34 to mount the mounting bracket 50 .

[0058] In the second connecting portion 40, a connecting hole 44 may be formed to which the connecting rod 42 is coupled. The connecting rod 42 may include a rod head 42a and a rod body 42b connected to the rod head 42a and protruding through the connecting hole 44, and the rod head 42a may have a larger diameter than the connecting hole 44. Therefore, the connecting rod 42 may be securely mounted to the second connecting portion 40 with a simple configuration.

[0059] The bulkhead 30 may further include extensions 46 and 48 bent from the first connection portion 32. The extensions 46 and 48 may respectively support the inner portions of the upper and lower surfaces 24 and 26 of the front rail 20 so that the bulkhead 30 and the front rail 20 may be more firmly coupled.

[0060] refer to Figures 1 to 3 , the partition plate 30 is provided in plurality, and the mounting bracket 50 can be combined with at least two partition plates 30. Only one partition plate 30 is shown in the drawings, but the partition plates 30 can be provided in any suitable number to mount the mounting bracket 50 inside the front longitudinal member 20.

[0061] Mounting bracket 50 may include a bracket-side connecting portion 52 connected to side surface 22 and a bracket-upper connecting portion 54 connected to upper surface 24. Mounting holes 53 and 55 are formed in bracket-side connecting portion 52 and bracket-upper connecting portion 54, respectively, so that connecting bolts 35 and connecting rods 42 can be inserted into mounting holes 53 and 55, respectively. Furthermore, mounting bracket 50 may be connected to side surface 22 and upper surface 24 of front side member 20 via connecting bolts 35 and connecting rods 42.

[0062] Figure 6 is a cross-sectional view of a vehicle body including a power module mounting structure according to various exemplary embodiments of the present invention, and Figure 7 is a cross-sectional view of a vehicle body including a typical power module mounting structure.

[0063] A trunk compartment 70 may be formed at an upper portion of the power module 60 .

[0064] exist Figure 6 and Figure 7 , line X is an imaginary line passing through the center of gravity of the power modules 60 and 61, and line A is a connection portion between the power module mounting block 60 and the longitudinal member 20 according to various exemplary embodiments of the present invention, for example, it is an imaginary line indicating the installation position of the connection bolt 35. Line B represents a connection portion between a general power module mounting block 61 and a longitudinal member or a subframe.

[0065] refer to Figure 6 and Figure 7 , it can be seen that the trunk compartment 70 is relatively larger due to the power module mounting structure according to various exemplary embodiments of the present invention compared to the lower surface and the trunk compartment 71 according to a general mounting configuration.

[0066] In the power module mounting structure according to various exemplary embodiments of the present invention, the relative distance between an imaginary line passing through the center of gravity of the power module 60 and the connection portion (A) of the power module mounting structure 60 and the longitudinal beam 20 is reduced by approximately 40% compared to a general mounting structure, thereby improving durability performance and NVH performance.

[0067] Furthermore, in the exemplary embodiment of the power module mounting structure, it is possible to ensure an upper space of the power module mounting module 60 , so that utilization of a space (eg, a trunk compartment) can be expanded.

[0068] Furthermore, in the power module mounting structure according to various exemplary embodiments of the present invention, the power module 60 is mounted on the side surface 22 and the upper surface 24 of the front side member 20 to prevent the power module 60 from rolling, thereby providing a strong structure.

[0069] Furthermore, in the power module mounting structure according to various exemplary embodiments of the present invention, a closed section is formed inside the front side member 20 in which the partition plate 30 is provided. Therefore, in the event of a vehicle collision, the power module 60 can be prevented from being separated.

[0070] For ease of explanation and precise definition in the appended claims, the terms "upper," "lower," "inner," "outer," "above," "below," "upward," "downward," "front," "back," "backside," "inside," "outside," "inwardly," "outwardly," "inner," "external," "inside," "outside," "forward," and "rearward" are used to describe features of the exemplary embodiments with reference to the positions of such features as shown in the drawings. It will be further understood that the term "connect" or its derivatives refers to both direct and indirect connections.

[0071] The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing descriptions are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described in order to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to realize and utilize the various exemplary embodiments of the invention and various alternative forms and modifications thereof. The scope of the invention is intended to be defined by the appended claims and their equivalents.

Claims

1. A power module mounting structure, comprising: The front longitudinal beam is arranged along the length direction of the vehicle body and includes: a side surface formed in an inner direction of the vehicle body; and an upper surface connected to the side surfaces; a bulkhead mounted inside the front longitudinal member; and a mounting bracket connected to the side surface and the upper surface of the front longitudinal beam through the bulkhead so as to mount a power module on the mounting bracket; Wherein, the partition comprises: a first connecting portion for coupling with the mounting bracket; and a second connecting portion bent from the first connecting portion; Wherein, the partition further comprises: a connecting pipe connected to the first connecting portion; and A connecting rod is mounted on the second connecting portion.

2. The power module mounting structure according to claim 1, wherein: The mounting bracket further comprises: a bracket-side connecting portion connected to the side surface by means of the connecting rod; and The bracket upper connecting portion is connected to the upper surface by means of the connecting pipe.

3. The power module mounting structure according to claim 2, wherein: The front longitudinal beam also includes: a front inner panel having the side surface, the upper surface, and a lower surface; and Front side outer panel, The front inner panel and the front outer panel form a closed cross section, and the partition is installed in the closed cross section. Wherein, the connecting rod of the partition is installed to penetrate the side surface of the front inner panel.

4. The power module mounting structure according to claim 1, wherein: The first connection portion includes a first recessed portion having a stepped portion formed inwardly.

5. The power module mounting structure according to claim 4, wherein: The first connection portion further includes a second recess formed to be more recessed inward than the first recess to mount the connection pipe.

6. The power module mounting structure according to claim 1, wherein: A connection hole to which the connection rod is connected is formed in the second connection portion.

7. The power module mounting structure according to claim 1, wherein: The separator further includes an extension portion bent from the first connection portion.

8. The power module mounting structure according to claim 7, wherein: The extending portion is provided in plurality, including a first extending portion supporting an inner portion of an upper surface of the front side member and a second extending portion supporting an inner portion of a lower surface of the front side member.

9. The power module mounting structure according to claim 1, wherein: The partition is provided in a plurality, including at least two partitions, Wherein, the mounting bracket is connected to the at least two partitions.

10. The power module mounting structure according to claim 9, wherein: The mounting bracket includes: a bracket-side connecting portion connected to the side surface; and The bracket upper connecting portion is connected to the upper surface.

11. The power module mounting structure according to claim 1, wherein: A luggage compartment is formed on an upper portion of the power module.

12. The power module mounting structure according to claim 1, wherein: The front longitudinal beam comprises: a front inner panel having the side surface, the upper surface, and a lower surface; and Front side outer panel, The front inner panel and the front outer panel form a closed cross section, and the partition is installed in the closed cross section. 13 . An electric vehicle comprising the power module mounting structure according to claim 1 .

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