CONNECTING STRUCTURE FOR BUS BAR AND ELECTRICAL WIRE

• US 20150188244A1
• Filed: 03/12/2015
• Published: 07/02/2015
• Est. Priority Date: 09/19/2012
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: YOSHIOKA, Nobuaki, SUZUKI, Keigo
• Granted Patent: US 9,806,441 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01M 50/50 Current conducting connections for cells or batteries
• CPC Class Codes: H01M 50/503 characterised by the shape of the interconnectors
• CPC Class Codes: H01M 50/571 Methods or arrangements for affording protection against corrosion; Selection of materials therefor
• CPC Class Codes: H01R 11/05 the connecting locations having different types of direct connections
• CPC Class Codes: H01R 11/11 End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member H01R11/01 takes precedence
• CPC Class Codes: H01R 4/182 for flat conductive elements, e.g. flat cables H01R4/01 takes precedence
• CPC Class Codes: H01R 4/184 comprising a U-shaped wire-receiving portion
• CPC Class Codes: H01R 4/185 combined with a U-shaped insulation-receiving portion
• CPC Class Codes: H01R 4/188 having an uneven wire-receiving surface to improve the contact
• CPC Class Codes: H01R 4/62 Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors H01R4/68 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A connecting structure uses a crimp terminal to connect a bus bar and an electrical wire together. The crimp terminal includes a bus bar-connecting section to be crimped to the bus bar, and an electrical wire-connecting section to be crimped to an end of the electrical wire. At least one of the bus bar-connecting section and the electrical wire-connecting section is provided with an oxide film breaking means for breaking an oxide film on the bus bar or a core wire on the end of the electrical wire.

Claims

1. A connecting structure for a bus bar and an electrical wire, comprising:

a bus bar configured to provide a connection between a plurality of battery cells or between a battery cell and a first external device;

an electrical wire connected to a second external device and configured to be electrically connected to the bus bar; and

a crimp terminal configured to connect the bus bar and the electrical wire together,

wherein the crimp terminal includes a bus bar-connecting section to be crimped to the bus bar, and an electrical wire-connecting section to be crimped to an end of the electrical wire, and

at least one of the bus bar-connecting section and the electrical wire-connecting section is provided with an oxide film breaking means for breaking an oxide film on the bus bar or a core wire on the end of the electrical wire.

2. The connecting structure for the bus bar and the electrical wire, according to claim 1, wherein

the bus bar includes a bus bar body to be connected to the battery cell, and a bus bar crimp portion formed in the shape of a plate protruding from the bus bar body, and configured to be crimped to the bus bar-connecting section of the crimp terminal,

the electrical wire includes the core wire, and a coating portion coating an outer periphery of the core wire,

the electrical wire-connecting section of the crimp terminal includes a core wire crimp portion provided on the bus bar-connecting section side, and a coating clamping portion provided on the opposite side from the bus bar-connecting section, and

the oxide film breaking means is a serration formed on at least one of the bus bar-connecting section and the core wire crimp portion.

3. The connecting structure for the bus bar and the electrical wire, according to claim 2, wherein the serration or a plurality of ridges configured to restrain an axial misalignment of the core wire and thereby retain the core wire, are formed on the core wire crimp portion of the crimp terminal.