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Cable for electric vehicle charging piles, preparation method and light-current flexible linear stranding device

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

Active Publication Date: 2019-08-16
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 piles, preparation method and light-current flexible linear stranding device
  • Cable for electric vehicle charging piles, preparation method and light-current flexible linear stranding device
  • Cable for electric vehicle charging piles, preparation method and light-current flexible linear stranding device

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 electric vehicle charging pile, including a battery core, a polyester tape layer 30 wrapped around the battery core, and a total shield wrapped around the polyester tape layer 30 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 filled in the rechargeable battery core 10 and the weak current Filling layer 90 between cores 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 1-3 mm. 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 battery cell) and...

Embodiment 2

[0080] [Example 2-cable preparation process]

[0081] combine figure 1 and image 3 As shown, a method for preparing a cable for an electric vehicle charging pile is also proposed in the disclosed embodiments of the present invention, comprising 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 a conductive core. Fiber and metal wire composite braided composite shielding layer, 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 wire, and the braiding angle is controlled at 45±5°. The density is greater than 80%, and the thickness of the shielding layer is 0.3mm-0.8mm; the outer surface of the composite shielding layer is wrapped with polyester tape;

[0084] Step 2. ...

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 light-current flexible linear stranding device. The cable comprises a core provided with charging cores and light current cores, a polyester belt layer wrapping the core, a main shielding layer wrapping the polyester belt layer, an isolation layer wrapping the composite shielding layer, a braided layer wrapping the isolation layer, an outer sheath layer arranged outside the braided layer, and a filling layer filling the gaps between the charging cores and the light current cores and wrapped in the polyester belt layer. Each light current core includes a flexible wire core and copper wires wound on the flexible wire core. Each flexible wire core is formed by mixing and concentrically stranding aramid and stainless steel wires, wherein aramid accounts for 80-90%, and the pitch multiple is 5-10. The cable of the invention has excellent shielding property and has good bending resistance and heatresistance.

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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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
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