Shielded wire and communication system

• US 9,956,886 B2
• Filed: 03/24/2016
• Issued: 05/01/2018
• Est. Priority Date: 03/26/2015
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Naito, Takayuki
• Primary Examiner(s): Thompson, Timothy
• Assistant Examiner(s): McAllister, Michael F
• Application Number:
  US15/079,199
• Publication Number:
  US 20160284444A1
• Time in Patent Office: 768 Days
• Field of Search: 174102 R, 174350
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H04B 2203/5416 by adding signals to the wave form of the power source
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 3/542 the information being in digital form
• CPC Class Codes: H05K 7/1432 specially adapted for power drive units or power converters
• CPC Class Codes: H05K 9/0098 for shielding electrical cables
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A shielded wire is connected to a high-voltage system and conducting high-voltage communication. The shielded wire includes a wire section and a first shielding layer. The first shielding layer covers the wire section. The first shielding layer is grounded to the high-voltage system or an object with the same potential as the high-voltage system.

Claims

1. A shielded wire, the shielded wire connected to a high-voltage system and conducting high-voltage communication, the shielded wire comprising:

a wire section;

a first shielding layer that covers the wire section, the first shielding layer being grounded to the high-voltage system or an object with the same potential as the high-voltage system; and

a second shielding layer that covers the first shielding layer, the second shielding layer being grounded to a low-voltage system or an object with the same potential as the low-voltage system.

3. The shielded wire according to claim 1, wherein

the wire section including plural wires, that each of distances from each wires to the low-voltage system or the object with the same potential as the low-voltage system having a constant value.

4. The shielded wire according to claim 3, wherein

the plural wires being at least a first core wire, a second core wire and a drain wire, the drain wire being in a middle position of the core wires.

5. The shielded wire according to claim 1, wherein

the high-voltage system is applied to a high-voltage wiring in Programmable Logic Controller (PLC) communication of the hybrid vehicle.

6. The shielded wire according to claim 1, wherein

the high-voltage system and the low-voltage system are applied to a consumer power supply.

7. The shielded wire according to claim 1, wherein

the high-voltage system and the low-voltage system are applied to a smart grid.

2. A communication system comprising:

a high-voltage system;

a low-voltage system arranged near the high-voltage system; and

a shielded wire connected to the high-voltage system and including a wire section and a first shielding layer, the first shielding layer covers the wire section and being grounded to the high-voltage system or an object with the same potential as the high-voltage system, wherein

the shielded wire further includes a second shielding layer that covers the first shielding layer, and the second shielding layer is grounded to the low-voltage system or an object with the same potential as the low-voltage system.

8. The communication system according to claim 2, wherein

the shielded wire including plural wires, each of the wires having a same distance to the low-voltage system or to the object with the same potential as the low-voltage system.

9. The communication system according to claim 8, wherein

the plural wires being at least a first core wire, a second core wire and a drain wire, the drain wire being in a middle position of the core wires.

10. The communication system according to claim 2, wherein

the high-voltage system is applied to the high-voltage wiring in PLC communication of the hybrid vehicle.

11. The communication system according to claim 2, wherein

the high-voltage system and the low-voltage system are applied to a consumer power supply.

12. The communication system according to claim 2, wherein

the high-voltage system and the low-voltage system are applied to a smart grid.