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Cable for electric vehicle charging pile, preparation method and twisting device for weak current flexible wire core

A technology for electric vehicles and charging piles, which is applied in the fields of electric vehicle charging technology, electric vehicles, cable/conductor manufacturing, etc. Excellent efficiency, good temperature resistance, high modulus

Active Publication Date: 2020-03-10
WUXI HUAMEI CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexible core has an important impact on the quality of the cable. The traditional production method of the flexible core requires manual control of mixed twisting of raw materials, which cannot guarantee the tightness of the twisting of the flexible core, which directly affects the use of the cable.

Method used

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  • Cable for electric vehicle charging pile, preparation method and twisting device for weak current flexible wire core
  • Cable for electric vehicle charging pile, preparation method and twisting device for weak current flexible wire core
  • Cable for electric vehicle charging pile, preparation method and twisting device for weak current flexible wire core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] [Example 1-cable and cable preparation]

[0068] combine figure 1 , 2 As shown, the first aspect of the present invention discloses a cable for an electric vehicle charging pile, including a battery core, a polyester tape outer sheath 30 wrapped around the battery core, and a polyester tape outer sheath 30 wrapped around the battery core. The outer total shielding layer 40, the isolation layer 50 wrapped around the composite shielding layer 40, the braided layer 60 wrapped around the isolated layer 50, the outer sheath layer 80 arranged outside the braided layer 60 and the charging cell Filling layer 90 between 10 and weak current cell 20 and covered by polyester tape layer 30 .

[0069] The outer sheath layer 80 is formed on the braided layer by extruding polyvinyl chloride-rubber mixture, with a thickness of 1-3mm. The filling layer 90 is filled with nylon filler.

[0070] combine figure 1 , 2 As shown, the battery cell has a charging battery cell 10 (a strong b...

Embodiment 2

[0080] [Example 2-cable preparation process]

[0081] combine figure 1 and image 3 As shown, in the disclosed embodiments of the present invention, a method for preparing a cable for an electric vehicle charging pile is also proposed, including the following steps:

[0082] Step 1. Preparation of charging cells

[0083]A plurality of silver-plated copper wires or tin-plated copper wires are twisted and then additionally braided with a layer of silver-plated copper wires or tin-plated copper wires as the conductive core, respectively wrapped with insulating layers on the outside, and then wrapped with fibers outside the insulating layer Composite shielding layer braided with metal wires, in which the insulating layer is a silicone rubber insulating layer with a thickness of 1-2.4mm; the composite shielding layer contains 60%-70% of metal wires, the braiding angle is controlled at 45±5°, and the braiding density Greater than 80%, the thickness of the shielding layer is 0.3mm...

Embodiment 3

[0092] [Example 3 - Preparation of Flexible Wire Core]

[0093] combine Figure 3-6 As shown, in the cable preparation process of the present invention, in order to improve the wear resistance and tensile properties of the cable of the core charging cable, a special integrated twisting device is used for twisting when preparing the composite flexible core, combined with Figure 4-6 The structural representation of the twisting device is shown as an example.

[0094] combine Figure 3-6 , the twisting device includes a base plate 1 as a stranding base, an electric slider 2 is installed on the base plate 1, a moving frame 3 is installed on the electric sliding block 2, a rotating motor 4 is installed on the moving frame 3 through a motor base, and the rotating motor 4 A twisting mechanism 5 is provided on the output shaft.

[0095] A guide frame 6 is provided in the middle of the bottom plate 1 , and a flow guide mechanism 7 is provided at the rear end of the bottom plate 1 ....

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Abstract

The invention provides a cable for electric vehicle charging piles, a preparation method, and a twisting device for a weak-current flexible wire core, wherein the cable has a charging battery core and a battery core of a weak-current battery core, and a polymer core wrapped around the battery core. Ester tape layer, the overall shielding layer wrapped outside the polyester tape layer; the isolation layer wrapped outside the composite shielding layer, the braided layer wrapped around the isolation layer, the outer sheath layer arranged outside the braided layer, the filling A filling layer between the rechargeable battery core and the weak current battery core and covered by the polyester tape layer. The weak current battery includes a flexible core and copper wire wound on the flexible core. The flexible core is formed by concentric twisting of aramid fiber and stainless steel wire, which contains 80%-90% aramid fiber, and the pitch multiple is 5‑10 times. The cable of the invention has excellent shielding properties, and has good bending resistance and heat resistance.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a charging cable used on a charging pile. Background technique [0002] With the popularization and use of new energy vehicles, especially plug-in and pure electric vehicles, it is necessary to arrange charging piles like gas stations for traditional fuel vehicles. As the most direct supporting equipment for electric vehicles, charging piles have been vigorously developed. Conversion, charge control, billing, and cables, power conversion, charge control, and billing are all software design issues, and only cable design is a hardware design issue. The cables of the charging pile need to transmit both electric energy and data information, including electric power cores (strong cores) and weak cores. During the actual charging process, they are often dragged and bent. , Car rolling, or even folding in half, is easy to cause damage to the cable, especially the damage to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/18H01B7/02H01B7/17H01B3/42H01B7/22H01B11/04H01B11/12H01B13/22H01B13/24H01B13/26B60L53/18
CPCB60L53/18H01B3/421H01B7/0225H01B7/17H01B7/1875H01B7/1895H01B7/228H01B11/04H01B11/12H01B13/22H01B13/221H01B13/24H01B13/26Y02T10/70Y02T10/7072Y02T90/14Y02A30/00
Inventor 张林锐王经逸程斌华健华洪彬
Owner WUXI HUAMEI CABLE