Solder, Aluminum Wire Body and Motor Using the Same

• US 20140285039A1
• Filed: 02/11/2014
• Published: 09/25/2014
• Est. Priority Date: 03/25/2013
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: IWASAKI, Norihisa, AOYAGI, Takuya, KODAMA, Motomune, NAITO, Takashi, FUJIEDA, Tadashi, SAWAI, Yuichi, MIYAGI, Masanori, AKAHOSHI, Haruo
• Granted Patent: US 9,789,568 B2
• Time in Patent Office: Days
• US Class Current: 310/71
• CPC Class Codes: B23K 35/0227 Rods, wires B23K35/0244 takes precedence
• CPC Class Codes: B23K 35/0233 Sheets, foils B23K35/0244 takes precedence
• CPC Class Codes: B23K 35/0244 Powders, particles or spheres; Preforms made therefrom
• CPC Class Codes: B23K 35/025 Pastes, creams, slurries
• CPC Class Codes: B23K 35/262 Sn as the principal constituent
• CPC Class Codes: B23K 35/282 Zn as the principal constituent
• CPC Class Codes: B23K 35/286 Al as the principal constituent
• CPC Class Codes: B23K 35/3006 Ag as the principal constituent
• CPC Class Codes: B23K 35/302 Cu as the principal constituent
• CPC Class Codes: B23K 35/32 with the principal constituent melting at more than 1550 degrees C
• CPC Class Codes: B23K 35/3602 Carbonates, basic oxides or hydroxides
• CPC Class Codes: H01R 4/023 between cables or wires and terminals
• CPC Class Codes: H01R 4/625 Soldered or welded connections
• CPC Class Codes: H02K 3/02 Windings characterised by the conductor material

Abstract

An aluminum wire body, in which an aluminum or aluminum alloy electric wire and a metal to be joined are joined by solder, wherein the solder includes an oxide glass including vanadium and a conducting particle. Preferably, the conducting particle contained in the solder is 90% by volume or less and the oxide glass is 20% by volume to 90% by volume. Further preferably, the oxide glass includes 40% by mass or more of Ag₂O in terms of oxides and the glass transition point is 180° C. or less.

Claims

1. Solder joining an aluminum or aluminum alloy electric wire and a metal to be joined, wherein the solder comprising an oxide glass comprising vanadium and a conducting particle.

2. The solder according to claim 1,

wherein the conducting particle contained in the solder is 90% by volume or less.

3. The solder according to claim 1,

wherein the oxide glass contained in the solder is 20% by volume to 90% by volume.

4. The solder according to claim 1,

wherein the oxide glass comprises 40% by mass or more of Ag₂O in terms of oxides and the glass transition point is 180°

C. or less.

5. The solder according to claim 1,

wherein the oxide glass further comprises one or more of Te, P, Fe, K, W, Ba and Sb.

6. The solder according to claim 1,

wherein the conducting particle contains at least one or more conducting particles selected from an aluminum or aluminum alloy particle, a copper or copper alloy particle, a silver or silver alloy particle, a tin or tin alloy particle, and a zinc or zinc alloy particle.

7. An aluminum wire body, which is equipped with an aluminum or aluminum alloy electric wire, a metal to be joined, and a connected portion in which a body to be joined and the metal to be joined are joined by solder,

wherein the connected portion is joined by solder according to claim 1.

8. The aluminum wire body according to claim 7,

wherein the solder is supplied to the connected portion in any form of powder, paste, wire and sheet and burned to join the electric wire and the metal to be joined.

9. The aluminum wire body according to claim 8,

wherein the solder in the form of paste comprises a conducting particle selected from an aluminum or aluminum alloy particle, a copper or copper alloy particle, a silver or silver alloy particle, a tin or tin alloy particle, and a zinc or zinc alloy particle, an oxide glass comprising vanadium and an organic solvent.

10. The aluminum wire body according to claim 7,

wherein the body to be joined and the metal to be joined are aluminum conductors, and both electric wires are mechanically connected in the connected portion, and solder in the form of powder or paste is then applied thereto and burned to join the aluminum conductors.

11. The aluminum wire body according to claim 7,

wherein the solder burned in the connected portion comprises a vanadium oxide phase.

12. The aluminum wire body according to claim 7,

wherein the solder burned in the connected portion comprises a vanadium alloy phase.

13. The aluminum wire body according to claim 7,

wherein the solder in the connected portion comprises at least any one of silver, tellurium and phosphorus.

14. A motor, which is equipped with a housing case, a stator coil arranged in the housing case and a rotor arranged in the inside of the stator coil,

wherein the stator coil is constituted of an aluminum wire, and the end of the aluminum wire is constituted of an aluminum wire body according to claim 7.

15. The motor according to claim 14,

wherein a terminal fitting as a metal to be joined is mechanically joined to the end of the aluminum wire of the stator coil, and solder in the form of powder or paste is applied thereto and burned to join the end of the aluminum wire and the terminal fitting.