Conductive module and battery pack

• US 10,516,149 B2
• Filed: 10/25/2017
• Issued: 12/24/2019
• Est. Priority Date: 11/18/2016
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Okazaki, Yutaro
• Primary Examiner(s): Fraser, Stewart A
• Assistant Examiner(s): Lynch, Victoria H
• Application Number:
  US15/793,936
• Publication Number:
  US 20180145301A1
• Time in Patent Office: 790 Days
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/6554 Rods or plates
• CPC Class Codes: H01M 2200/103 Fuse
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• 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 50/55 on the same side of the cell
• CPC Class Codes: H01M 50/553 Terminals adapted for prismatic, pouch or rectangular cells
• CPC Class Codes: H01M 50/569 Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals battery terminal connectors with integrated measuring arrangements G01R31/364
• CPC Class Codes: H01M 6/42 Grouping of primary cells into batteries H01M6/40 takes precedence
• CPC Class Codes: H02H 7/18 for batteries; for accumulators
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A conductive module includes a first conductive member electrically connected to an electrode terminal of a battery cell, a second conductive member that electrically connects a battery monitor monitoring a battery state to the first conductive member, and an accommodation member. The first conductive member, the second conductive member, and the accommodation member are arranged to have a plane along an arrangement direction of a plurality of the battery cells and along a wall surface of an aggregate formed of the plurality of battery cells as a reference plane, and to be arranged side by side along the reference plane such that each transverse direction is orthogonal to the reference plane.

Claims

1. A conductive module comprising:

a first conductive member that is electrically connected to one of two electrode terminals provided on a wall surface of a battery cell as a connection target, the connection target being at least one of a plurality of arranged battery cells;

a second conductive member that electrically connects an arithmetic processor of a battery monitor that monitors battery states of the plurality of battery cells, to the first conductive member;

a circuit protection member that includes a first electrical connection portion electrically connected to an electrical connection portion of the first conductive member, a second electrical connection portion electrically connected to an electrical connection portion of the second conductive member, and a fusible body arranged between the first electrical connection portion and the second electrical connection portion;

a first electrical connection structural body that electrically connects the electrical connection portion of the first conductive member and the first electrical connection portion between the first conductive member and the circuit protection member;

a second electrical connection structural body that electrically connects the electrical connection portion of the second conductive member and the second electrical connection portion between the second conductive member and the circuit protection member; and

an accommodation member that accommodates the circuit protection member and the first and second electrical connection structural bodies, wherein

the first conductive member, the second conductive member, and the accommodation member are arranged along the wall surface of the battery cell to be side by side therealong.

2. The conductive module according to claim 1, wherein

the circuit protection member is provided as a circuit protection part that encloses the fusible body in an insulating enclosing member in a state where each of the first electrical connection portion and the second electrical connection portion is exposed,

the accommodation member is formed such that the circuit protection part is inserted along the wall surface of the battery cell,

the first electrical connection structural body is configured so as to electrically connect the electrical connection portion of the first conductive member and the first electrical connection portion by accommodating the circuit protection part in the accommodation member, and

the second electrical connection structural body is configured so as to electrically connect the electrical connection portion of the second conductive member and the second electrical connection portion by accommodating the circuit protection part in the accommodation member.

3. The conductive module according to claim 1, further comprising:

a linking connector that links the first conductive member and the accommodation member; and

a mounting lock that mounts the accommodation member to the insulating member as a mounting target, the mounting target being at least one of the insulating members which sandwich the battery cell as the connection target in the arrangement direction of the plurality of battery cells.

4. The conductive module according to claim 2, further comprising:

a linking connector that links the first conductive member and the accommodation member; and

a mounting lock that mounts the accommodation member to the insulating member as a mounting target, the mounting target being at least one of the insulating members which sandwich the battery cell as the connection target in the arrangement direction of the plurality of battery cells.

5. A battery pack comprising:

a plurality of arranged battery cells; and

a plurality of conductive modules that electrically connect the plurality of battery cells and an arithmetic processor of a battery monitor which monitors battery states of the plurality of battery cells, wherein

each of the plurality of conductive modules includes

a first conductive member that is electrically connected to one of two electrode terminals provided on a wall surface of a battery cell as a connection target, the connection target being at least one of the plurality of battery cells,

a second conductive member that electrically connects the arithmetic processor to the first conductive member,

a circuit protection member that includes a first electrical connection portion electrically connected to an electrical connection portion of the first conductive member, a second electrical connection portion electrically connected to an electrical connection portion of the second conductive member, and a fusible body arranged between the first electrical connection portion and the second electrical connection portion,

a first electrical connection structural body that electrically connects the electrical connection portion of the first conductive member and the first electrical connection portion between the first conductive member and the circuit protection member,

a second electrical connection structural body that electrically connects the electrical connection portion of the second conductive member and the second electrical connection portion between the second conductive member and the circuit protection member, and

an accommodation member that accommodates the circuit protection member and the first and second electrical connection structural bodies, and

the first conductive member, the second conductive member, and the accommodation member are arranged along the wall surface of the battery cell to be side by side therealong.