Anti-interference electric vehicle cable bundle

Abstract

The utility model discloses an anti -interference's electric motor car cable bundle, including cable, the outside of cable is wrapped with inner layer shield case, and the outside fixed setting of inner layer shield case has outer layer shield case, and one side fixed setting of cable has the isolation support seat, and cable equidistance sets up four groups, and four groups of cable are isolated through the isolation support seat between. This anti -interference's electric motor car cable bundle, and the inner layer shield case is formed by aluminium foil and plastic film compound, forms the second anti -interference barrier, and the outer layer shield case is woven with tinned copper wire, has good conductivity and flexibility, can reflect and absorb the outside electromagnetic wave, and the electromagnetic radiation that cable bundle inside generates is limited in the shield layer, forms the third anti -interference barrier, and three anti -interference barriers compound use, and the electric motor car cable bundle is prevented electromagnetic interference, can avoid external electromagnetic interference and will invade the signal line in cable bundle, causes signal distortion or miscommunication etc. Happen.

Description

Technical Field

[0001] This utility model relates to the field of cables, specifically to an anti-interference electric vehicle cable bundle. Background Technology

[0002] As the "neural network" for vehicle power and signal transmission, the electric vehicle cable harness operates through an integrated bundle structure of multiple sets of wires of different specifications (including high-voltage power lines, low-voltage signal lines, and control lines) to achieve power transmission and information exchange between core components such as the battery pack, motor, controller, and charging pile. The high-voltage cable harness is responsible for transmitting the high-voltage DC power from the battery to the motor controller, which then converts it to drive the motor and transmits the energy fed back from the motor (such as during regenerative braking) back to the battery for storage. The low-voltage cable harness is responsible for transmitting signals from the vehicle control system (such as the BMS battery management system, on-board sensors, and instrument panel) to ensure the real-time monitoring of the status of each component and the execution of commands. In addition, through reasonable wiring layout, anti-interference design of the shielding layer, and fixed protective structure, the cable harness works stably under complex vehicle operating conditions (such as vibration, high and low temperatures, and electromagnetic environment), ensuring the coordinated operation of the vehicle's power output and electronic system.

[0003] Electric vehicle cable bundles cannot be protected against electromagnetic interference. External electromagnetic interference (such as other electronic devices, wireless signals, electromagnetic waves generated by motor operation, etc.) can intrude into the signal lines inside the cable bundle, causing signal distortion or mistransmission. This may cause the vehicle control system (such as BMS battery management system, autonomous driving sensors, instrument panel, etc.) to misjudge, resulting in abnormal power output, inaccurate range display, false alarm triggering, or even failure of safety functions. Utility Model Content

[0004] The purpose of this invention is to provide an anti-interference electric vehicle cable bundle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, an anti-interference electric vehicle cable bundle is provided, comprising a cable, an inner shielding cover wrapped around the outside of the cable, an outer shielding cover fixedly disposed on the outside of the inner shielding cover, an isolation support fixedly disposed on one side of the cable, and four groups of cables arranged equidistantly, with the four groups of cables isolated from each other by the isolation support.

[0006] Furthermore, the four cable groups are combined to form a cable bundle. The cable bundle is wrapped with an inner shield, which is made of aluminum foil and plastic film and is elliptical in shape.

[0007] Furthermore, the outer shield and the inner shield are distributed in layers, the outer shield is woven from tin-plated copper wire, and the outer shield is elliptical in shape.

[0008] Furthermore, the isolation support includes an upper support fixedly connected to the upper side inside the inner shield, an isolation seat fixedly disposed at the bottom of the upper support, a lower support installed at the bottom of the isolation seat, and the bottom of the lower support fixedly connected to the lower side inside the inner shield.

[0009] Furthermore, both sides of the isolation seat are provided with close-fitting grooves, which are arc-shaped, and the outer circumference of the cable covers the inside of the close-fitting grooves.

[0010] Furthermore, a filler shielding seat is filled between the inner shielding cover and the cable bundle. The filler shielding seat is made of conductive foam. The inner shielding cover, the outer shielding cover, and the filler shielding seat are combined together to form an anti-interference mechanism for the cable bundle.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This solution uses four sets of cables to form a cable bundle. From the inside out, the outer side of the bundle is equipped with a filler shield, an inner shield, and an outer shield. The filler shield is made of conductive foam, forming the first anti-interference barrier. The inner shield is made of aluminum foil and plastic film composite, forming the second anti-interference barrier. The outer shield is made of tin-plated copper wire braid, which has good conductivity and flexibility, and can reflect and absorb external electromagnetic waves. At the same time, it confines the electromagnetic radiation generated inside the cable bundle within the shielding layer, forming the third anti-interference barrier. The three anti-interference barriers are used in combination to prevent electromagnetic interference in the electric vehicle cable bundle, and can prevent external electromagnetic interference from entering the signal lines inside the cable bundle, causing signal distortion or mistransmission.

[0013] 2. This solution isolates four groups of cables that are equidistant from each other using isolation support seats. The arc-shaped grooves on both sides of the isolation seats fit tightly against the outer circumference of the cables. This not only prevents the insulation layer from being worn due to friction between the four groups of cables, thus reducing the risk of short circuits, but also reduces electromagnetic interference between the cables by using physical spacing in conjunction with the filling shield seat, ensuring the stability of signal or power transmission. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the cable bundle structure of this utility model;

[0016] Figure 3 This is a top view of the cable bundle structure of this utility model;

[0017] Figure 4 This is an exploded view of the cable bundle structure and its installation structure according to this utility model.

[0018] Figure 5 for Figure 4 Top view;

[0019] Figure 6 for Figure 1 Cross-sectional view;

[0020] Figure 7 This is a schematic diagram of the structural isolation support base of this utility model.

[0021] The following are the labels in the diagram: 1. Cable; 2. Inner shield; 3. Outer shield; 4. Filler shield; 5. Isolation support; 51. Upper support; 52. Lower support; 53. Isolation seat; 54. Tightly fitting groove. Detailed Implementation

[0022] Please see Figure 1-7 This utility model provides an anti-interference electric vehicle cable bundle, including a cable 1, an inner shield 2 wrapped around the outside of the cable 1, an outer shield 3 fixedly installed on the outside of the inner shield 2, an isolation support 5 fixedly installed on one side of the cable 1, and four groups of cables 1 arranged at equal intervals, with the four groups of cables 1 isolated from each other by the isolation support 5.

[0023] Working principle: During use, four sets of cables 1 are combined to form a cable bundle. From the inside out, the outer side of the bundle is equipped with a filler shield 4, an inner shield 2, and an outer shield 3. The filler shield 4 is made of conductive foam, which improves the absorption and reflection efficiency of electromagnetic waves and enhances the vibration resistance of the cable bundle, forming the first anti-interference barrier. The inner shield 2 is made of aluminum foil and plastic film composite, which is low in cost and light in weight. As a conductive layer, the aluminum foil can reflect the electromagnetic interference waves incident from the outside with its good conductivity, preventing them from penetrating the shield and entering the cable. At the same time, the electromagnetic radiation generated by the cable itself during operation is also reflected or absorbed by the aluminum foil, preventing it from spreading outward and interfering with other equipment. The plastic film serves as a support layer, protecting the aluminum foil from mechanical damage and maintaining the integrity of the shielding structure, forming the second anti-interference barrier. The outer shielding cover 3 is woven from tin-plated copper wire, which has good conductivity and flexibility, and can reflect and absorb external electromagnetic waves. At the same time, it confines the electromagnetic radiation generated inside the cable bundle within the shielding layer to prevent interference with other components, forming the third anti-interference barrier. The three anti-interference barriers are used in combination to prevent electromagnetic interference in the electric vehicle cable bundle, which can prevent external electromagnetic interference from intruding into the signal lines inside the cable bundle, causing signal distortion or mistransmission.

[0024] In a preferred embodiment, four sets of cables 1 are combined to form a cable bundle. The outer side of the cable bundle is wrapped with an inner shield 2, which is made of aluminum foil and plastic film composite and is elliptical in shape.

[0025] The outer shield 3 and the inner shield 2 are distributed in layers. The outer shield 3 is woven from tin-plated copper wire and is elliptical in shape.

[0026] The isolation support 5 includes an upper support 51 fixedly connected to the upper side inside the inner shield 2, an isolation seat 53 fixedly disposed at the bottom of the upper support 51, a lower support 52 installed at the bottom of the isolation seat 53, and the bottom of the lower support 52 fixedly connected to the lower side inside the inner shield 2.

[0027] Both sides of the isolation seat 53 are provided with close-fitting grooves 54. The close-fitting grooves 54 are arc-shaped, and the outer circumference of the cable 1 covers the inside of the close-fitting grooves 54.

[0028] like Figure 1-6 As shown: The isolation support 5 isolates the four sets of cables 1 that are equidistant from each other. The arc-shaped grooves 54 on both sides of the isolation support 53 are tightly fitted to the outer circumference of the cable 1. This not only prevents the insulation layer from being worn due to friction between the four sets of cables 1, thus reducing the risk of short circuits, but also reduces electromagnetic interference between the cables 1 by using physical spacing and in conjunction with the filling shield 4, ensuring the stability of signal or power transmission. At the same time, the arc-shaped grooves 54 can effectively fix the cables 1, preventing them from shifting or shaking due to vibration during vehicle operation, thus enhancing the vibration resistance of the overall structure. Furthermore, the regular layout optimizes space utilization and facilitates subsequent inspection and maintenance.

[0029] In a preferred embodiment, a filler shield 4 is provided between the inner shield 2 and the cable bundle. The filler shield 4 is conductive foam. The inner shield 2, the outer shield 3 and the filler shield 4 are combined together to form an anti-interference mechanism for the cable bundle.

Claims

1. An anti-interference electric vehicle cable bundle, comprising a cable (1), characterized in that: The cable (1) is wrapped with an inner shield (2) on the outside, and an outer shield (3) is fixedly installed on the outside of the inner shield (2). An isolation support (5) is fixedly installed on one side of the cable (1). Four groups of cables (1) are arranged at equal intervals, and the four groups of cables (1) are isolated from each other by the isolation support (5).

2. The anti-interference electric vehicle cable harness according to claim 1, characterized in that: Four sets of cables (1) are combined to form a cable bundle. The outer side of the cable bundle is wrapped with an inner shield (2). The inner shield (2) is made of aluminum foil and plastic film composite and is elliptical in shape.

3. The anti-interference electric vehicle cable bundle according to claim 1, characterized in that: The outer shield (3) and the inner shield (2) are distributed in layers. The outer shield (3) is woven from tin-plated copper wire and is elliptical in shape.

4. The anti-interference electric vehicle cable bundle according to claim 1, characterized in that: The isolation support base (5) includes an upper support part (51) fixedly connected to the upper side inside the inner shield (2), an isolation base (53) fixedly provided at the bottom of the upper support part (51), a lower support part (52) installed at the bottom of the isolation base (53), and the bottom of the lower support part (52) fixedly connected to the lower side inside the inner shield (2).

5. The anti-interference electric vehicle cable bundle according to claim 4, characterized in that: Both sides of the isolation seat (53) are provided with close-fitting grooves (54), which are arc-shaped, and the outer circumferential wall of the cable (1) covers the inside of the close-fitting grooves (54).

6. The anti-interference electric vehicle cable harness according to claim 2, characterized in that: The inner shield (2) and the cable bundle are filled with a filling shield seat (4), which is conductive foam. The inner shield (2), the outer shield (3) and the filling shield seat (4) are combined together to form the anti-interference mechanism of the cable bundle.

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