Bus bar, bus bar module, and method of manufacturing bus bar

Patent metadata

Field	Value
Publication number	US-9620263-B2
Application number	US-201314436315-A
Country	US
Kind code	B2
Filing date	Dec 27, 2013
Priority date	Dec 28, 2012
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A bus bar ( 1 ) comprises: a laminated conductive wire ( 20 ) formed by arranging side by side in the longitudinal direction a first plate-shaped conductive wire ( 21 ) formed by spirally winding stripe conductors ( 11, 12 ) mutually adjacent in the width direction while bringing the opposing inner surfaces closer to each other, and a second plate-shaped conductive wire ( 22 ) formed by spirally winding the stripe conductors ( 11, 12 ) in the direction opposite the direction of the first conductive wire ( 21 ) while bringing the opposing inner surfaces closer to each other, and overlapping these wires ( 21, 22 ) so that the outer surfaces in the width direction face each other; and terminals ( 30 ) joined to the first conductive wire ( 21 ) and the second conductive wire ( 22 ) at both ends of the laminated conductive wire ( 20 ).

First claim

The invention claimed is:

1. A bus bar used for electric connection, comprising:
a laminated conductive wire, where two or more conductive wires, configured by one or a plurality of stripe conductors covered with an insulating film having been wound in a spiral form so as to be adjacent in a width direction of the stripe conductor, are configured in a flat plate form so that opposing surfaces of a wound interior are in proximity or in close contact are disposed side-by-side in a longitudinal direction of each, and overlaid and laminated so that an outer surface of each in the width direction face each other; and
terminal parts, disposed on both ends of the laminated conductive wire and bonded to the two conductive wires,
wherein the two conductive wires include
a first conductive wire where one or a plurality of stripe conductors covered with an insulating film are wound in a spiral form so as to be adjacent in a width direction of the stripe conductor, and configured in a flat plate form so that opposing surfaces of a wound interior are in proximity or in close contact, and
a second conductive wire where one or a plurality of stripe conductors covered with an insulating film are wound in a spiral form, in an opposite direction to the first conductive wire, so as to be adjacent in a width direction of the stripe conductor, and configured in a flat plate form so that opposing surfaces of a wound interior are in proximity or in close contact.

2. The bus bar according to claim 1 , wherein the number of the stripe conductors making of each of the conductive wires is the same, and the width of the stripe conductors making of each of the conductive wires is the same.

3. The bus bar according to claim 2 , wherein the number of stripe conductors making up each of the two conductive wires is two.

4. The bus bar according to claim 1 , wherein an aspect ratio of thickness of the laminated conductive wire as to the width thereof is 1 or smaller.

5. The bus bar according to claim 1 , wherein
with a gap between the first conductive wire and second conductive wire as δt and the thickness of the stripe conductors as Tt, the dimensional ratio is such that the ratio δt/Tt of δt as to Tt is 1 or smaller.

6. The bus bar according to claim 1 , wherein the bus bar is used for electric connection to conduct pulse width modulated current.

7. The bus bar according to claim 1 , wherein the bus bar is used for electric connection between an electric motor and an inverter.

8. A bus bar module, formed by integrally assembling bus bars according to claim 1 formed in a predetermined shape, disposed in close contact so that surfaces thereof in the width direction face one another.

9. A bus bar used for electric connection, comprising:
a laminated conductive wire, where two or more conductive wires, configured by one or a plurality of stripe conductors covered with an insulating film having been wound in a spiral form so as to be adjacent in a width direction of the stripe conductor, are configured in a flat plate form so that opposing surfaces of a wound interior are in proximity or in close contact are disposed side-by-side in a longitudinal direction of each, and overlaid and laminated so that an outer surface of each in the width direction face each other; and
terminal parts, disposed on both ends of the laminated conductive wire and bonded to the two conductive wires, wherein
with the width of the laminated conductive wire as W, the thickness of the laminated conductive wire 20 as T, the width of the stripe conductors 11 and 12 as ω, and half of the spiral pitch of the stripe conductors as λ, a combination of the dimensional ratios of T/W and λ/W regarding the skin depth δ=(ρ/πfμ) 1/2 from the frequency f of the current which the bus bar conducts and the resistivity ρ and magnetic permeability μ, of the stripe conductors satisfies the following Expression (1).

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Assignees

• Kobe Steel Ltd

Inventors

• Ogawa Tetsuya
• Fujii Hideo
• Ichihara Chikara
• Inoue Kenichi

Classifications

• H01B7/30 Primary

  with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect · CPC title

• Y10T29/49174

  Assembling terminal to elongated conductor · CPC title

• H01B7/306 Primary

  Transposed conductors · CPC title

• H01B5/04

  wound or coiled · CPC title

• H01B7/0241

  comprising one or more helical wrapped layers of insulation · CPC title