Automobile high-voltage wire harness guiding and positioning protection device, test method thereof and automobile

Abstract

The invention relates to the technical field of high-voltage wire harnesses, in particular to an automobile high-voltage wire harness guiding and positioning protection device, a test method thereof and an automobile, and the device comprises a guiding support which is internally provided with a curved groove which is used for arranging the high-voltage wire harnesses; the high-temperature-resistant insulating layer is arranged on the inner wall of the curved groove; a plurality of heat dissipation and ventilation holes are formed in the guide bracket and are used for heat dissipation and ventilation of the high-voltage wire harness; and the multiple fixing parts are arranged on the guide support and used for being fixedly connected with a vehicle body. The high-voltage wiring harness can be effectively guided to be arranged according to the designed path and curvature, the layout attractiveness is not affected, the hidden danger of electrical safety risks is solved, meanwhile, the flexibility and adjustability of the device are considered, adaptive adjustment can be carried out under different installation environments and wiring requirements, and the installation efficiency is improved. And the high-voltage wiring harness is prevented from being damaged or influencing the electrical performance due to excessive bending.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage wire harnesses, and in particular to a guide, positioning and protection device for a high-voltage wire harness of an automobile, a test method thereof and an automobile. Background Art

[0002] With the booming development of the new energy vehicle industry, high-voltage wiring harnesses, as key components for transmitting electricity, play a core role in ensuring vehicle performance and safety. However, the layout of traditional high-voltage wiring harnesses faces a series of challenges:

[0003] 1. Layout complexity and aesthetic issues: The complexity of the interior space and the limited installation area lead to a chaotic wiring harness layout, which not only affects the appearance but also poses a hidden danger of electrical safety risks.

[0004] 2. Wear and electrical failure: Friction, collision and other factors during operation may cause damage to the wiring harness, which in turn may lead to failure of electrical connections or even short circuit accidents, endangering the safety of the vehicle and passengers.

[0005] 3. Poor thermal management: Improper layout or lack of effective heat dissipation measures can cause the high-voltage wiring harness to overheat under long-term operation, accelerate the aging of insulation materials, and increase the probability of electrical failure.

[0006] 4. Positioning stability: Insufficient positioning of the wiring harness makes it easy to move under vehicle vibration or impact, destroying the original electrical connection and posing a safety hazard.

[0007] These problems not only restrict the performance of new energy vehicles, but also directly affect the safety of passengers. Therefore, innovative solutions are urgently needed to optimize the layout of high-voltage wiring harnesses, improve their safety and extend their service life.

[0008] Existing technical solutions and their limitations:

[0009] The current solutions on the market tend to fix the wiring harness by using fixing brackets, top covers and positioning components, and try to achieve a certain heat dissipation function. However, this method has the following limitations:

[0010] 1. Limited guidance mechanism: Existing guidance methods mainly focus on physical fixation, which is difficult to adapt to the line direction in complex environments, especially the lack of wiring harness path planning and protection capabilities.

[0011] 2. The risk of damage has not decreased: In unavoidable obstacles or complex spaces, the protection and damage control of wiring harnesses remain challenges, especially when encountering collisions or vibrations, the risk of damage has not been effectively alleviated.

[0012] 3. Safety risks: Although some solutions emphasize heat dissipation, the insulation protection and thermal stress management of wiring harnesses still need to be further strengthened in extreme environments or long-term operating conditions. Summary of the invention

[0013] The object of the present invention is to provide a guiding, positioning and protecting device for a high-voltage wire harness of an automobile, which can solve at least one technical problem existing in the prior art to a certain extent.

[0014] Another object of the present invention is to provide a vehicle that can solve at least one technical problem existing in the prior art to a certain extent.

[0015] The technical solution of the present invention is achieved in this way:

[0016] A guiding, positioning and protecting device for a high-voltage wiring harness of an automobile, comprising:

[0017] A guide bracket, wherein the inner side of the guide bracket has a curved groove, and the curved groove is used for arranging a high-voltage wire harness;

[0018] A high temperature resistant insulating layer is arranged on the inner wall of the curved groove;

[0019] Heat dissipation ventilation holes, a plurality of heat dissipation ventilation holes are arranged on the guide bracket for heat dissipation and ventilation of the high-voltage wire harness;

[0020] A fixing part, wherein a plurality of fixing parts are arranged on the guide bracket and are used for being fixedly connected with the vehicle body.

[0021] Furthermore, it also includes a positioning buckle;

[0022] A curved guide track is arranged in the curved groove, a wiring harness groove is formed in the curved guide track, a plurality of positioning buckles are arranged along the curved guide track, the positioning buckles can move along the curved guide track, the wiring harness groove is used for arranging a high-voltage wiring harness, and the positioning buckles are used for locally limiting or locally locking the high-voltage wiring harness of the wiring harness groove.

[0023] Furthermore, the position on the positioning buckle that contacts the high-voltage wire harness is a limiting portion, the limiting portion is made of elastic material, and the limiting portion adapts to high-voltage wire harnesses of different diameters through its own elastic deformation and fits tightly with the high-voltage wire harness.

[0024] Furthermore, the curvature of the harness groove, the curved groove and the guide bracket is consistent, and the width of the harness groove is W1, the width of the curved groove is W2, and the width of the curved groove is W3, satisfying: W1<W2<W3.

[0025] Furthermore, the guide bracket includes an upper section and a lower section that are integrally formed, the curvature radius of the upper section ranges from 50 to 70 mm, and the curvature radius of the lower section ranges from 80 to 100 mm.

[0026] Furthermore, the high temperature resistant insulation layer adopts a multi-layer composite structure, the inner layer of the high temperature resistant insulation layer is high temperature resistant ceramic silicone rubber, the middle layer is a reinforced fiber braided layer, the outer layer is a wear-resistant and oil-resistant silicone layer, and the inner layer of the high temperature resistant insulation layer is in contact with the high voltage wire harness.

[0027] Furthermore, the fixing parts are arranged on the edge parts of both sides of the guide bracket, and bolt holes are opened on the fixing parts.

[0028] Furthermore, a plurality of reinforcing ribs are staggeredly arranged on the outer side of the guide bracket.

[0029] The test method based on the automotive high-voltage wire harness guiding and positioning protection device comprises the following steps:

[0030] After the high-voltage wire harness is arranged in the automotive high-voltage wire harness guiding and positioning protection device, the whole is subjected to performance tests under various extreme working conditions through a simulation environment chamber, including high temperature resistance test, salt spray resistance test, chemical reagent resistance test and vibration test;

[0031] Among them, high temperature resistance test: the automobile high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness are placed in a high temperature environment of 200°C, and the high-voltage wire harness works continuously for 200 hours, and then the insulation resistance of the high-voltage wire harness is detected to see whether it is kept within a safe range, and whether the high-voltage wire harness is offset or deformed;

[0032] Salt spray resistance test: the automobile high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness as a whole are placed in a salt spray environment for 72 hours, and then the insulation resistance of the high-voltage wire harness is tested to see whether it is kept within a safe range, and whether the high-voltage wire harness is offset or deformed;

[0033] Chemical reagent resistance test: After placing the automotive high-voltage wire harness guide positioning protection device and the high-voltage wire harness as a whole in a chemical reagent environment for several hours, detect whether the insulation resistance of the high-voltage wire harness is kept within a safe range, and observe whether the high-voltage wire harness is offset or deformed;

[0034] Vibration test: Place the automotive high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness as a whole in a random vibration environment or a constant vibration environment, and then detect whether the insulation resistance of the high-voltage wire harness remains within a safe range, and observe whether the high-voltage wire harness is offset or deformed.

[0035] An automobile comprises the automobile high-voltage wire harness guiding, positioning and protecting device.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] Taking into account that automotive high-voltage wiring harnesses are difficult to adapt to the route of lines in complex environments, especially the lack of wiring harness path planning and protection capabilities, this application designs the curved groove inside the guide bracket to be curved to ensure that the device can effectively guide the high-voltage wiring harness to be arranged according to the designed path and curvature. This not only does not affect the aesthetics of the layout, but also solves the hidden dangers of electrical safety risks. At the same time, the flexibility and adjustability of the device are also taken into account so that it can be adaptively adjusted under different installation environments and wiring requirements to avoid damage to the high-voltage wiring harness due to excessive bending or affecting electrical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 This is a schematic diagram of the outer structure of the automotive high-voltage wire harness guiding, positioning and protecting device of the present invention;

[0040] Figure 2 This is a schematic diagram of the inner structure of the automotive high-voltage wire harness guiding, positioning and protecting device of the present invention;

[0041] Figure 3 The table statistics of the test methods and results of the automotive high-voltage wire harness guiding, positioning and protection device and the high-voltage wire harness as a whole according to the embodiments of the present invention.

[0042] In the figure:

[0043] 1-guide bracket; 10-upper half; 11-lower half; 101-curved groove; 102-curved guide track; 103-wiring harness groove; 104-reinforcement rib;

[0044] 2-High temperature resistant insulation layer;

[0045] 3-Heat dissipation vents;

[0046] 4-fixing part; 401-bolt hole;

[0047] 5- Positioning buckle. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0052] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0053] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0055] Example 1

[0056] With the vigorous development of the new energy vehicle industry, the safety and reliability of high-voltage wire harnesses, as key components of electric vehicle power transmission, are increasingly valued. Traditional high-voltage wire harness layouts often have problems such as messy wiring, easy wear, poor heat dissipation, and inaccurate positioning. These problems not only affect vehicle performance, but may also cause safety hazards such as short circuits and fires. Therefore, this application aims to propose an efficient and reliable automotive high-voltage wire harness guiding and positioning protection device, which aims to optimize the wiring harness layout, enhance insulation protection, improve high temperature resistance, and ensure accurate positioning of the wiring harness, thereby improving the overall safety and service life of new energy vehicles.

[0057] Reference Figure 1-Figure 2 This embodiment provides a vehicle high voltage wire harness guiding, positioning and protecting device, comprising:

[0058] A guide bracket 1, wherein the inner side of the guide bracket 1 has a curved groove 101, and the curved groove 101 is used for arranging a high-voltage wire harness;

[0059] A high temperature resistant insulating layer 2 is arranged on the inner wall of the curved groove 101;

[0060] Heat dissipation ventilation holes 3, a plurality of heat dissipation ventilation holes 3 are provided on the guide bracket 1, which are used for heat dissipation and ventilation of the high-voltage wire harness;

[0061] The guide bracket 1 is provided with a plurality of fixing parts 4 for fixed connection with the vehicle body.

[0062] Among them, the guide bracket 1 is a high-strength guide bracket 1, which is made of light alloy material and combined with precision processing technology, and has the characteristics of high strength and corrosion resistance. Specifically, a curved guide rail 102 with anti-deformation is arranged in the curved groove 101 to provide a stable path support for the high-voltage wire harness. Because the high-voltage wire harness will bend during the arrangement process and there is a curvature radius during the bending process, this guide rail fully considers the bending radius of the actual direction of the high-voltage wire harness. The wire bracket includes an integrally formed upper half 10 and a lower half 11. The curvature radius of the upper half 10 is 50mm~70mm, and the curvature radius of the lower half 11 is 80mm~100mm, ensuring that this device can effectively guide the wire harness to be arranged according to the path and curvature radius of this design. At the same time, the flexibility and adjustability of the device are also considered, so as to make adaptive adjustments under different installation environments and wiring requirements to avoid the high-voltage wire harness being damaged or affecting the electrical performance due to excessive bending. In addition, a plurality of adjustable positioning buckles 5 are arranged along the curved guide rail 102, and the positioning buckles 5 can move the line of sight along the curved guide rail 102 to adjust their positions, and a wiring harness groove 103 is formed in the curved guide rail 102, and the wiring harness groove 103 is used for arranging the high-voltage wiring harness, and the positioning buckles 5 are used to locally limit or locally lock the high-voltage wiring harness in the wiring harness groove 103, that is, the positioning buckles 5 can locally limit or locally lock the position where they contact the high-voltage wiring harness, and can flexibly move the position according to the actual size of the wiring harness and the wiring requirements, accurately lock the position of the wiring harness, and prevent shaking and falling off.

[0063] It should be noted that the structural composition of the guide bracket 1 is not limited to the upper section 10 and the lower section 11, and can include a multi-section structure, which can be specifically arranged according to the actual path of the wire harness.

[0064] Specifically, the position on the positioning buckle 5 that contacts the high-voltage wire harness is a limiting portion, and the limiting portion is made of elastic material, and the limiting portion adapts to high-voltage wire harnesses of different diameters through its own elastic deformation, and fits tightly with the high-voltage wire harness. Therefore, the present application combines the physical constraint and elastic locking principle for the guiding and positioning mechanism of the high-voltage wire harness. The curved guide track 102 of the guide bracket 1 is designed to guide the high-voltage wire harness along a predetermined path, and the elastic portion of the positioning buckle 5 adapts to high-voltage wire harnesses of different diameters through elastic deformation, and fits tightly with it to achieve stable positioning. At the same time, the positioning buckle 5 can also be provided with a fine-tuning device to facilitate fine-tuning during installation to ensure positioning accuracy.

[0065] In this embodiment, the curvature of the harness groove 103, the curved groove 101 and the guide bracket 1 are consistent. Figure 1 and Figure 2As shown, the width of the harness groove 103 is W1, the width of the curved groove 101 is W2, and the width of the curved groove 101 is W3, satisfying: W1<W2<W3.

[0066] In this embodiment, the high temperature resistant insulating layer 2 adopts a multi-layer composite structure, the inner layer of which is a ceramic silicone rubber with good high temperature tolerance, the middle layer is a reinforced fiber braided layer, and the outer layer is a wear-resistant and oil-resistant silicone layer. The high temperature resistant insulating layer 2 can effectively isolate the interference of the external environment on the high voltage wire harness, ensure the insulation performance, and improve the ability of high temperature resistance and aging resistance. The high temperature resistant insulating layer 2 uses high-performance silicone rubber or thermoplastic elastomer materials with good insulation, high temperature resistance (≥200°C) and aging resistance to ensure the safety of the wire harness under extreme working conditions. After the high voltage wire harness is locked in the harness slot 103, the high voltage wire harness is in direct contact with the inner layer of the high temperature resistant insulating layer 2, and the positioning buckle 5 and the wire bracket work together to clamp and lock the high voltage wire harness therebetween.

[0067] In this embodiment, a plurality of reinforcing ribs 104 are staggeredly arranged on the outer side of the guide bracket 1 to improve the overall structural strength of the wire bracket. Figure 1 shown.

[0068] In this embodiment, a plurality of fixing parts 4 are respectively arranged on the edge parts of both sides of the guide bracket 1, and bolt holes 401 are provided on the fixing parts 4 for installing bolts, and the device is fixed to the vehicle body by bolts. Specifically, the installer can firmly install the guide bracket 1 on the vehicle chassis or body frame through the pre-installed bolt holes 401 and special bolts. The positioning buckle 5 is quickly fixed on the guide bracket 1 by pressing, without complicated tools, reducing the difficulty and time cost of installation.

[0069] The design of the automotive high-voltage wire harness guiding and positioning protection device has the advantages of good high temperature resistance, salt spray resistance, chemical reagent resistance and good vibration performance after the high-voltage wire harness is arranged. The design of the heat dissipation vent 3 also makes it have good heat dissipation and ventilation effects, and the design of the curved guide rail 102 and the positioning buckle 5 makes it have good stability in positioning the high-voltage wire harness. Even under vehicle vibration or impact, it is not easy to move or loosen, and will not damage the original electrical connection, posing a safety hazard. In addition, the design of the high-temperature resistant insulating layer 2 can not only withstand high temperatures, but also avoid the friction, collision and other factors of the high-voltage wire harness during the operation of the vehicle, which may cause damage to the wire harness, thereby causing electrical connection failure or even short circuit accidents, endangering the safety of the vehicle and passengers. The curvature radius of the wire harness slot 103 in the upper half 10 is 50-70mm, and the curvature radius of the lower half 11 is 80-100mm, ensuring that the device can effectively guide the wire harness to be arranged according to the path and curvature radius of this design, which can solve the problems of layout complexity and aesthetics, not only does not affect the aesthetics, but also solves the hidden dangers of electrical safety risks. In summary, this application provides an automotive high-voltage wire harness management system that integrates guidance, positioning, and protection, and achieves all-round protection and precise management of high-voltage wire harnesses through innovative structural design and material selection.

[0070] Example 2

[0071] This embodiment provides a test method based on the automotive high-voltage wire harness guiding and positioning protection device, comprising the following steps:

[0072] After the high-voltage wire harness is arranged in the automotive high-voltage wire harness guiding and positioning protection device, the whole is subjected to performance tests under various extreme working conditions through a simulation environment chamber, including high temperature resistance test, salt spray resistance test, chemical reagent resistance test and vibration test;

[0073] Among them, high temperature resistance test: the automobile high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness are placed in a high temperature environment of 200°C, and the high-voltage wire harness works continuously for 200 hours, and then the insulation resistance of the high-voltage wire harness is detected to see whether it is kept within a safe range, and whether the high-voltage wire harness is offset or deformed;

[0074] Salt spray resistance test: the automobile high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness as a whole are placed in a salt spray environment for 72 hours, and then the insulation resistance of the high-voltage wire harness is tested to see whether it is kept within a safe range, and whether the high-voltage wire harness is offset or deformed;

[0075] Chemical reagent resistance test: After placing the automotive high-voltage wire harness guide positioning protection device and the high-voltage wire harness as a whole in a chemical reagent environment for several hours, detect whether the insulation resistance of the high-voltage wire harness is kept within a safe range, and observe whether the high-voltage wire harness is offset or deformed;

[0076] Vibration test: Place the automotive high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness as a whole in a random vibration environment or a constant vibration environment, and then detect whether the insulation resistance of the high-voltage wire harness remains within a safe range, and observe whether the high-voltage wire harness is offset or deformed.

[0077] In fact, through the performance tests under various extreme working conditions such as high temperature, high humidity, vibration, etc. in the simulated environmental chamber, the positioning protection device of the present application has shown excellent insulation performance, high temperature stability and reliable positioning effect. Experimental data show that after working continuously for 200 hours in a high temperature environment of 200°C, the insulation resistance remains within the safe range and there is no obvious deviation in the position of the wiring harness.

[0078] This embodiment lists the above four tests on the automotive high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness as a whole. For details, please refer to Figure 3 As shown (no further elaboration).

[0079] Example 3

[0080] An automobile includes the automobile high-voltage wire harness guiding, positioning and protecting device. In practical applications, the guiding device has been successfully applied to the high-voltage wire harness system of our company's FV70EV automobile. By installing the positioning and guiding device, the high-voltage wire harness of the automobile is effectively protected during driving, reducing damage caused by vibration and friction, and improving the reliability of the electrical system. At the same time, the protection and early warning design of the guiding device also enables operators to promptly discover and handle abnormal situations, avoiding the occurrence of safety accidents.

[0081] In summary, the high-voltage wire harness positioning and guiding device of the present application has significant technical advantages and application value, can meet the needs of high-voltage wire harness guidance and protection in different fields, and provides a strong guarantee for the safe operation of the electrical system.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A guiding, positioning and protecting device for a high voltage wiring harness of an automobile, characterized in that: include: A guide bracket (1), wherein the inner side of the guide bracket (1) is provided with a curved groove (101), and the curved groove (101) is used for arranging a high-voltage wire harness; A high temperature resistant insulating layer (2) is arranged on the inner wall of the curved groove (101); Heat dissipation ventilation holes (3), a plurality of heat dissipation ventilation holes (3) are provided on the guide bracket (1) and are used for heat dissipation and ventilation of the high-voltage wire harness; A fixing part (4), wherein a plurality of fixing parts (4) are arranged on the guide bracket (1) and are used for fixed connection with the vehicle body.

2. The automotive high-voltage wire harness guiding, positioning and protecting device according to claim 1, characterized in that: It also includes a positioning buckle (5); A curved guide rail (102) is arranged in the curved groove (101), a wire harness groove (103) is formed in the curved guide rail (102), a plurality of positioning buckles (5) are arranged along the curved guide rail (102), the positioning buckles (5) are movable along the curved guide rail (102), a high-voltage wire harness is arranged in the wire harness groove (103), and the positioning buckles (5) are used to locally limit or locally lock the high-voltage wire harness in the wire harness groove (103).

3. The automotive high-voltage wire harness guiding, positioning and protecting device according to claim 2, characterized in that: The position on the positioning buckle (5) that contacts the high-voltage wire harness is a limiting portion, the limiting portion is made of elastic material, and the limiting portion adapts to high-voltage wire harnesses of different diameters through its own elastic deformation and fits tightly with the high-voltage wire harness.

4. The automotive high-voltage wire harness guiding, positioning and protecting device according to claim 2, characterized in that: The curvature of the harness groove (103) and the curved groove (101) is consistent with that of the guide bracket (1), and the width of the harness groove (103) is W1, the width of the curved groove (101) is W2, and the width of the curved groove (101) is W3, satisfying: W1<W2<W3.

5. The automotive high-voltage wire harness guiding, positioning and protecting device according to claim 4, characterized in that: The guide bracket (1) comprises an upper section (10) and a lower section (11) which are integrally formed; the curvature radius of the upper section (10) ranges from 50 to 70 mm, and the curvature radius of the lower section (11) ranges from 80 to 100 mm.

6. The automotive high-voltage wire harness guiding, positioning and protecting device according to claim 1, characterized in that: The high temperature resistant insulating layer (2) adopts a multi-layer composite structure, wherein the inner layer of the high temperature resistant insulating layer (2) is high temperature resistant ceramic silicone rubber, the middle layer is a reinforced fiber braided layer, and the outer layer is a wear-resistant and oil-resistant silicone layer, and the inner layer of the high temperature resistant insulating layer (2) is in contact with the high voltage wire harness.

7. The automotive high-voltage wire harness guiding, positioning and protecting device according to claim 1, characterized in that: The fixing portion (4) is arranged on the edge portions of both sides of the guide bracket (1), and bolt holes (401) are provided on the fixing portion (4).

8. The automotive high-voltage wire harness guiding, positioning and protecting device according to claim 1, characterized in that: A plurality of reinforcing ribs (104) are staggeredly arranged on the outer side of the guide bracket (1).

9. A test method for the automotive high-voltage wire harness guiding, positioning and protecting device according to any one of claims 1 to 8, characterized in that: The following steps are involved: After the high-voltage wire harness is arranged in the automotive high-voltage wire harness guiding and positioning protection device, the whole is subjected to performance tests under various extreme working conditions through a simulation environment chamber, including high temperature resistance test, salt spray resistance test, chemical reagent resistance test and vibration test; Among them, high temperature resistance test: the automobile high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness are placed in a high temperature environment of 200°C, and the high-voltage wire harness works continuously for 200 hours, and then the insulation resistance of the high-voltage wire harness is detected to see whether it is kept within a safe range, and whether the high-voltage wire harness is offset or deformed; Salt spray resistance test: the automobile high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness as a whole are placed in a salt spray environment for 72 hours, and then the insulation resistance of the high-voltage wire harness is tested to see whether it is kept within a safe range, and whether the high-voltage wire harness is offset or deformed; Chemical reagent resistance test: After placing the automotive high-voltage wire harness guide positioning protection device and the high-voltage wire harness as a whole in a chemical reagent environment for several hours, detect whether the insulation resistance of the high-voltage wire harness is kept within a safe range, and observe whether the high-voltage wire harness is offset or deformed; Vibration test: Place the automotive high-voltage wire harness guiding and positioning protection device and the high-voltage wire harness as a whole in a random vibration environment or a constant vibration environment, and then detect whether the insulation resistance of the high-voltage wire harness remains within a safe range, and observe whether the high-voltage wire harness is offset or deformed.

10. An automobile, characterized in that: The invention comprises the automobile high-voltage wire harness guiding, positioning and protecting device according to any one of claims 1 to 8.

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