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US-20260128550-A1 - NEW SHIELDED FLAME-RETARDANT CONNECTOR ASSEMBLY, AND VEHICLE

US20260128550A1US 20260128550 A1US20260128550 A1US 20260128550A1US-20260128550-A1

Abstract

The present disclosure discloses a new shielded flame-retardant connector assembly, and a vehicle, and relates to the technical field of automotive electrical appliances. The connector assembly includes an electrical connection skeleton, and connectors connected to two ends of the electrical connection skeleton, in which each of the connectors includes a connecting terminal, and an inner shell which has a shielding effect, the two ends of the electrical connection skeleton are electrically connected to connection terminals respectively, an outer periphery of the electrical connection skeleton is coated, from inside to outside, with an insulating layer and a conductive layer, the conductive layer is electrically connected to the inner shell, and at least one of the inner shell, the insulating layer and the conductive layer includes a flame retardant.

Inventors

  • Chao Wang
  • Yun Miao

Assignees

  • JILIN ZHONG YING HIGH TECHNOLOGY CO., LTD.

Dates

Publication Date
20260507
Application Date
20230314
Priority Date
20220314

Claims (20)

  1. 1 . A new shielded flame-retardant connector assembly, comprising an electrical connection skeleton, and connectors connected to two ends of the electrical connection skeleton, wherein each of the connectors comprises a connection terminal, and an inner shell which has a shielding effect, the two ends of the electrical connection skeleton are electrically connected to connection terminals respectively, an outer periphery of the electrical connection skeleton is coated, from inside to outside, with an insulating layer and a conductive layer, the conductive layer is electrically connected to the inner shell, and at least one of the inner shell, the insulating layer and the conductive layer comprises a flame retardant.
  2. 2 . The new shielded flame-retardant connector assembly according to claim 1 , wherein the connector further comprises an outer shell coating the inner shell and comprising a flame retardant.
  3. 3 . The new shielded flame-retardant connector assembly according to claim 2 , wherein a content of the flame retardant in the inner shell, the outer shell, the insulating layer or the conductive layer is not greater than 49%.
  4. 4 . (canceled)
  5. 5 . The new shielded flame-retardant connector assembly according to claim 1 , wherein an outer surface of the conductive layer is electrically connected with an inner surface of the inner shell.
  6. 6 . (canceled)
  7. 7 . The new shielded flame-retardant connector assembly according to claim 1 , wherein the cross-sectional area of the electrical connection skeleton is 3.5 mm 2 -240 mm 2 .
  8. 8 . The new shielded flame-retardant connector assembly according to claim 1 , wherein a material of the connecting terminal comprises copper or copper alloy, a material of the electrical connection skeleton comprises aluminum or aluminum alloy, and the electrical connection skeleton is electrically connected with the connection terminal by welding or crimping.
  9. 9 . The new shielded flame-retardant connector assembly according to claim 1 , wherein the electrical connection skeleton is a rigid body, and a tensile strength of the electrical connection skeleton is greater than 75 MPa.
  10. 10 . The new shielded flame-retardant connector assembly according to claim 1 , wherein a material of the conductive layer and of the inner shell is a conductive polymer material.
  11. 11 . The new shielded flame-retardant connector assembly according to claim 10 , wherein the conductive polymer material is a conductive paint, and the conductive paint is a paint comprising conductive particles, and a material of the conductive particles comprises one or more of a metal, a conductive ceramic, a carbon-containing conductor, a solid electrolyte, and a mixed conductor.
  12. 12 - 18 . (canceled)
  13. 19 . The new shielded flame-retardant connector assembly according to claim 1 , wherein the inner shell is electrically connected with the conductive layer by conductive adhesive bonding or welding or screw bonding or crimping or clamping.
  14. 20 . The new shielded flame-retardant connector assembly according to claim 1 , wherein an impedance between the conductive layer and the inner shell is less than 80 mΩ.
  15. 21 . The new shielded flame-retardant connector assembly according to claim 1 , wherein a transfer impedance of the conductive layer is less than 100 mΩ.
  16. 22 . The new shielded flame-retardant connector assembly according to claim 1 , wherein a transfer impedance of the inner shell is less than 100 mΩ.
  17. 23 . The new shielded flame-retardant connector assembly according to claim 1 , wherein a shielding device is provided between the inner shell and the conductive layer, and the shielding device is electrically connected with the inner shell and the conductive layer respectively.
  18. 24 . The new shielded flame-retardant connector assembly according to claim 23 , wherein an impedance between the conductive layer and the shielding device is less than 80 mΩ, and an impedance between the shielding device and the inner shell is less than 80 mΩ.
  19. 25 . The new shielded flame-retardant connector assembly according to claim 1 , wherein a thickness of the conductive layer is 0.15 mm to 3.8 mm.
  20. 26 . The new shielded flame-retardant connector assembly according to claim 1 , wherein a cross-section shape of the electrical connection skeleton is a polygon, and corners of the polygon are all chamfered or rounded.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present disclosure claims the priority of the Chinese Patent Application NO. 202210250057.1, filed on Mar. 14, 2022, and entitled “NEW SHIELDED FLAME-RETARDANT CONNECTOR ASSEMBLY, AND VEHICLE”, the entire content of which is incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to the technical field of automotive electrical appliances, more specifically, relates to a new shielded flame-retardant connector assembly, and a vehicle. BACKGROUND With the increasing popularity of new energy vehicles, charging equipment and facilities for the new energy vehicles have also developed. Because connector assembly on the new energy vehicle needs to meet a requirement of driving high-power motors, the transmission current is relatively high, and diameters of high-voltage cable on the connector assembly also increases. At present, for high-voltage cables on most connector assemblies, a multi-core copper cable is used, it is large in weight and expensive in price, becoming an obstacle to popularization of the new energy vehicles. In addition, although a multi-core cable is soft and can be easily processed and wired, due to its coarse diameter and significant weight, the cable may frequently rub against a vehicle shell during vehicle driving, causing a damage to an insulating layer of the cable, and resulting in high-voltage discharge, the vehicle is damaged in a mild circumstance, and a serious traffic accident may occur in a severe circumstance. Moreover, for a current connector, its flame retardancy is not high, when a cable or terminal starts to heat up due to a too high conducting current, the connector may melt, smoke and burn, etc., which cannot ensure the use of a connector assembly and even endanger the safety of a vehicle. In order to reduce the influence of electromagnetic interference, a conductive cable is usually shielded from the electromagnetic interference by using a shielding net. At present, a commonly used shielding net is made by braiding a metal wire, and it is necessary to increase a shielding braiding machine in cable production equipments, the equipment price is high and the occupied area is large, causing a price of a shielding cable of a connector to stay at a high level. Therefore, the technical field of automotive electrical appliances urgently needs a connector cable with a low price, a long service life and good flame retardance. SUMMARY OF INVENTION The purpose of the present disclosure is to use an electrical connection skeleton to replace a multi-core copper cable, to reduce a diameter of a cable and reduce a weight of the cable so that the cable may be mounted easily, to reduce the friction between the cable and a vehicle shell, thus prolonging a service life of a connector assembly; and at least one of an inner shell, an outer shell of the connector and an insulating layer and a conductive layer of the electrical connection skeleton includes a flame retardant, which ensures the flame retardant performance of a new shielded flame-retardant connector assembly. According to a first aspect of the present disclosure, a new shielded flame-retardant connector assembly is provided and comprises an electrical connection skeleton, and connectors connected to two ends of the electrical connection skeleton, each of the connectors includes a connection terminal, and an inner shell which has a shielding effect, the two ends of the electrical connection skeleton are electrically connected to the connection terminals respectively, an outer periphery of the electrical connection skeleton is coated, from inside to outside, with an insulating layer and a conductive layer, the conductive layer is electrically connected to the inner shell, and at least one of the inner shell, the insulating layer and the conductive layer includes a flame retardant. Optionally, the connector further includes an outer shell paint the inner shell and including a flame retardant. Optionally, a content of the flame retardant in the inner shell, the outer shell, the insulating layer or the conductive layer is not greater than 49%. Optionally, the flame retardant contains one or more of bromine-based, nitrogen-based, red phosphorus and compounds thereof, halogens, non-halogens, tellurium compounds, borate, expandable graphite, antimony trioxide, magnesium hydroxide, aluminium hydroxide and silicon-based. Optionally, an outer surface of the conductive layer is electrically connected with an inner surface of the inner shell. Optionally, a cross-section shape of the electrical connection skeleton is one or more of a circle, an oval, a rectangle, a polygon, an A shape, a B shape, a D shape, an M shape, a N shape, an O shape, an S shape, an E shape, an F shape, a H shape, a K shape, an L shape, a T shape, a U shape, a V shape, a W shape, an X shape, a Y shape, a Z shape, a P shape, a half-arc shape, an arc shape, and a wave shape. Optionally, the cross-sectional area