CN211294655U

CN211294655U - High-voltage wire harness for electric automobile

Info

Publication number: CN211294655U
Application number: CN202020371700.2U
Authority: CN
Inventors: 葛小可; 梅志强; 林峰; 章志文; 万巍
Original assignee: Nanchang Youxing Electronic Appliance Co ltd
Current assignee: Nanchang Youxing Electronic Appliance Co ltd
Priority date: 2020-03-21
Filing date: 2020-03-21
Publication date: 2020-08-18
Anticipated expiration: 2030-03-21

Abstract

The utility model discloses a high-voltage wire harness for an electric automobile, which comprises a multi-core cable and plug-ins at two ends of the multi-core cable; the multi-core cable is formed by sequentially connecting a plurality of groups of cables I and II, the cables I and II are of an integrated structure, the cable I comprises a wire I, an insulating layer I, a spacing layer I, a shielding layer I and a protective sleeve I from inside to outside, and the wire is formed by stranding a plurality of wire cores; the cable II comprises a wire II, an insulating layer II, an interval layer II, a shielding layer II and a protective sleeve II from inside to outside, the wire II comprises an isolating rod and a plurality of strand branching cores embedded into the isolating rod, the outer wall of the isolating rod is provided with a plurality of groups of wire grooves, a central shaft is provided with a penetrating groove, and the branching cores are embedded into the wire grooves and the penetrating groove and then penetrate through the wire grooves and the penetrating groove; the wire I is formed by stranding the branch wire core after the branch wire core extends to the I section of the cable from the isolating rod. The utility model discloses an inside sinle silk of pencil wire adopts different compound mode, has increased wire II radius equivalently, has reduced wire II reactance, has increased the susceptance for the pressure resistance of cable II self increases.

Description

High-voltage wire harness for electric automobile

Technical Field

The utility model belongs to the technical field of the pencil, concretely relates to high-pressure pencil for electric automobile.

Background

The high-voltage wire harness for the electric automobile mainly provides a high-voltage strong-current power supply effect for the automobile, belongs to a high-safety part, and has the characteristics of large voltage/large current and large number of large-wire-diameter wires, the battery voltage of the new energy automobile can reach 600V, and the withstand voltage grade of the corresponding wire can reach 300A (the battery voltage of the traditional fuel automobile is generally 12V, and the withstand voltage grade of the corresponding wire is less than 60V). Therefore, how to improve the pressure resistance of the high-voltage wire harness for the electric automobile is a key factor influencing the quality of the high-voltage wire harness.

SUMMERY OF THE UTILITY MODEL

To not enough and a difficult problem among the prior art, the utility model aims at providing a high-pressure pencil for electric automobile.

The utility model discloses a following technical scheme realizes:

a high-voltage wire harness for an electric automobile comprises a multi-core cable and plug-ins at two ends of the multi-core cable; the multi-core cable is formed by sequentially connecting a plurality of groups of cables I and II, the cables I and II are of an integrated structure, the cable I comprises a wire I, an insulating layer I, a spacing layer I, a shielding layer I and a protective sleeve I from inside to outside, and the wire is formed by stranding a plurality of wire cores; the cable II comprises a wire II, an insulating layer II, an interval layer II, a shielding layer II and a protective sleeve II from inside to outside, the wire II comprises an isolating rod and a plurality of strand branching cores embedded into the isolating rod, the outer wall of the isolating rod is provided with a plurality of groups of wire grooves, a central shaft is provided with a penetrating groove, and the branching cores are embedded into the wire grooves and the penetrating groove and then penetrate through the wire grooves and the penetrating groove; the wire I is formed by stranding the branch wire core after the branch wire core extends to the I section of the cable from the isolating rod.

Furthermore, the insulating layer I and the insulating layer II are made of silica gel, and the inner wall of the insulating layer II is matched with the isolating rod embedded into the branch core.

Furthermore, the rod body of the isolating rod is of an integrated structure formed by a middle cylinder and cones at two ends.

Further, the joint of the cylinder and the cone is a transition circular arc.

Furthermore, the number of the wire grooves is set to 3-5 groups, and the wire grooves in each group are uniformly distributed in an annular array by taking the central shaft of the isolating rod as a central line.

Furthermore, a fixing piece is arranged on part of the cable II, and the fixing piece is sleeved on the protective sleeve II.

Compared with the prior art, the utility model discloses beneficial effect includes:

(1) the utility model discloses an inside sinle silk of pencil wire adopts different compound mode, each sinle silk of cable I inner conductor is alternately in the same place, each sinle silk interval certain distance and the even symmetrical arrangement of cable II inner conductor, form similar split conductor structure, the barrier rod makes wire II magnetic field around combining with the separated time core, electric field distribution changes, thereby wire II radius has been increased equivalently, wire II reactance has been reduced, the electricity is received has been increased, make the pressure resistance of cable II self increase.

Drawings

Fig. 1 is a schematic view of a part of the structure of the present invention.

Fig. 2 is a partial view in the direction a-a of fig. 1.

Fig. 3 is a partial view in the direction B-B of fig. 1.

Illustration of the drawings: 1-cable I, 101-wire I, 102-insulating layer I, 103-spacing layer I, 104-shielding layer I, 105-protective sleeve I, 2-cable II, 201-isolating rod, 202-shunt core, 203-insulating layer II, 204-spacing layer II, 205-shielding layer II, 206-protective sleeve II, 207-fixing piece, 208-wire groove and 209-through groove.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "I", "II" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, integrally connected; can be mechanical connection and electrical connection; may be directly connected, indirectly connected through intervening agents, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood to be specific to those skilled in the art.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 3, a high-voltage wire harness for an electric vehicle includes a multi-core cable and plug-ins at two ends thereof, wherein the combination of the cable and the plug-ins adopts a crimping manner, and the specific structure adopts a conventional design, which is not described herein again.

The multi-core cable is formed by sequentially connecting a plurality of groups of cables I1 and II2, the cable I1 and the cable II2 are of an integrated structure, the difference between the cable I1 and the cable II2 lies in the combination mode among all cable cores, all cable cores of the inner conductor of the cable I1 are crossed together, all cable cores of the inner conductor of the cable II2 are arranged at intervals and are uniformly and symmetrically arranged, and a similar split conductor structure is formed.

The cable I1 comprises a conductor I101, an insulating layer I102, a spacing layer I103, a shielding layer I104 and a protective sleeve I105 from inside to outside, wherein the conductor 101 is formed by stranding a plurality of strands of wire cores.

Cable II2 includes wire II from inside to outside, insulating layer II203, wall II204, shielding layer II205, protective sheath II206, and wire II includes isolating rod 201, a plurality of strand branch core 202 of embedding isolating rod 201, and isolating rod 201 outer wall is equipped with a plurality of groups wire casing 208, the center pin is equipped with the trough 209 that runs through, and wire casing 208 and trough 209 all are used for imbedding the branch core and the certain distance that separates each other. When the isolating rod 201 is combined with the shunt core 202, the magnetic field and the electric field around the wire II are distributed and changed, so that the radius of the wire II is equivalently increased, the reactance of the wire II is reduced, the susceptance is increased, and the voltage resistance of the cable II2 is increased. Insulating layer I102, insulating layer II203 adopt the silica gel material, and insulating layer II203 inner wall matches with the insulator 201 behind the embedding split core 202, and the effect is in order to seal the vacant part of wire casing 208 (behind the embedding split core 202).

The conductor I101 is formed by twisting a split core 202 after extending from the isolation rod 201 to a cable I1 section.

Insulating layer I102 and insulating layer II203 are the integral structure, spacing layer I103 and spacing layer II204 are the integral structure, shielding layer I104 and shielding layer II205 are the integral structure, protective sheath I105 and protective sheath II206 are the integral structure. The insulating layer, the spacing layer, the shielding layer and the protective sleeve are all conventional materials and structures of the high-voltage wiring harness, and are not described in detail herein.

The body of the isolating rod 201 is of an integrated structure formed by a middle cylinder and cones at two ends, and the connecting part of the cylinder and the cones is a transition circular arc, so that the connecting corner adopts circular arc smooth transition, and the natural transition from the cable II2 to the cable I1 of the cable core 202 is facilitated.

In specific implementation, the inside of the multi-core cable is generally divided into 3-6 strands of wire cores, the number of the wire grooves 208 is set to 3-5 groups, and the wire grooves 208 in each group are uniformly distributed in an annular array by taking the central axis of the isolating rod 201 as a central line. When the number n of the wire cores is 3, one group of through grooves 209 and 3 groups of wire grooves 208 are formed, and the wire cores are all embedded into the wire grooves 208; when the number n of the wire cores is more than 3, the groove bodies of the isolating rods 201 are formed into a group of through grooves 209 and (n-1) group of wire grooves 208, wherein one group of the through grooves 209 penetrates through the wire grooves 208, and the other group of the through grooves 208 penetrates through the wire grooves.

The fixing piece 207 is arranged on part of the cables II2, the fixing piece 207 is sleeved on the protective sleeve II206, and the fixing pieces are not arranged on all the cables II2 but arranged according to actual needs. High-pressure pencil lays for fixed in electric automobile, mounting 207 is used for fixing high-pressure pencil and outside other regions, and mounting 207's structure sets up as required, can adopt current design for lantern ring, clamp, pipe strap, support etc. the utility model discloses do not explain in detail.

The utility model discloses a structure that cable I1 and cable II2 link to each other in proper order, and single cable II2 structure not, because the high-pressure pencil is in the use, some needs are buckled, and cable I1 is favorable to buckling more.

The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A high-voltage wire harness for an electric automobile comprises a multi-core cable and plug-ins at two ends of the multi-core cable; the method is characterized in that: the multi-core cable is formed by sequentially connecting a plurality of groups of cables I and II, the cables I and II are of an integrated structure, each cable I comprises a conductor I, an insulating layer I, a spacing layer I, a shielding layer I and a protective sleeve I from inside to outside, and the conductor is formed by stranding a plurality of wire cores; the cable II comprises a wire II, an insulating layer II, a spacing layer II, a shielding layer II and a protective sleeve II from inside to outside, the wire II comprises an isolating rod and a plurality of strand branching cores embedded into the isolating rod, the outer wall of the isolating rod is provided with a plurality of groups of wire grooves, a central shaft is provided with a penetrating groove, and the branching cores are embedded into the wire grooves and the penetrating groove and penetrate through the wire grooves and the penetrating groove; the wire I is formed by twisting the branch wire core after the branch wire core extends to the I section of the cable from the isolating rod.

2. The high voltage wire harness for an electric vehicle according to claim 1, characterized in that: insulating layer I insulating layer II adopts the silica gel material, insulating layer II inner wall with the embedding behind the split core the barrier rod matches.

3. The high voltage wire harness for an electric vehicle according to claim 1, characterized in that: the body of the isolating rod is of an integrated structure formed by a cylinder in the middle and cones at two ends.

4. The high voltage wire harness for an electric vehicle according to claim 3, characterized in that: the joint of the cylinder and the cone is a transition circular arc.

5. The high voltage wire harness for an electric vehicle according to claim 1, characterized in that: the number of the wire grooves is 3-5 groups, and the wire grooves in each group are uniformly distributed in an annular array by taking the central shaft of the isolating rod as a central line.

6. The high voltage wire harness for an electric vehicle according to claim 1, characterized in that: and a fixing piece is arranged on part of the cable II and sleeved on the protective sleeve II.