Voltage detection device and battery module

Patent metadata

Field	Value
Publication number	US-12597685-B2
Application number	US-202217935445-A
Country	US
Kind code	B2
Filing date	Sep 26, 2022
Priority date	Sep 29, 2021
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

A first voltage detection device includes a first holding body, a first voltage detection portion held by the first holding body, and a first conductor attached to the first holding body, at least a portion of the conductor being functioning as a fuse.

First claim

What is claimed is:

1 . A voltage detection device comprising:
a holding body; a voltage detection portion held by the holding body; and a conductor attached to the holding body, at least a portion of the conductor functioning as a fuse.

2 . The voltage detection device according to claim 1 , wherein
the fuse includes opposite ends, the conductor comprises a first portion connected to one of the opposite ends of the fuse and a second portion connected to the other of the opposite ends of the fuse, and the first portion and the second portion of the conductor are fixed to the holding body.

3 . The voltage detection device according to claim 1 , further comprising:
a wiring electrically connected to the conductor; and a fixture fixing at least a portion of the conductor and at least a portion of the wiring to the holding body.

4 . The voltage detection device according to claim 1 , wherein
the fuse includes opposite ends, the conductor comprises a first portion connected to one of the opposite ends of the fuse and a second portion connected to the other of the opposite ends of the fuse, the first portion or the second portion is electrically connected to a voltage detection target.

5 . The voltage detection device according to claim 1 , wherein
the conductor comprises a plurality of extension bodies extending in different directions, and at least a portion of at least one of the plurality of extension bodies is held by at least a portion of the holding body.

6 . A battery module comprising:
the voltage detection device according to claim 1 ; and a battery cell comprising a lead portion connected to the voltage detection portion.

7 . The voltage detection device according to claim 1 , wherein
the conductor comprises another portion not functioning as a fuse.

8 . The voltage detection device according to claim 1 , wherein
at least a portion of the holding body penetrates through the voltage detection portion.

9 . The voltage detection device according to claim 8 , wherein
the voltage detection portion comprises a base end portion and a tip end portion, the at least a portion of the holding body penetrates through the base end portion of the voltage detection portion, and the tip end portion of the voltage detection portion is plate-shaped.

10 . The voltage detection device according to claim 1 , further comprising:
a voltage detection line electrically connected to the voltage detection portion, wherein the voltage detection portion is routed through the holding body.

11 . The voltage detection device according to claim 1 , further comprising:
the fuse includes opposite ends, the conductor comprises a first portion connected to one of the opposite ends of the fuse and a second portion connected to the other of the opposite ends of the fuse, and the fuse, the first portion and the second portion are formed of a same material.

12 . The voltage detection device according to claim 11 , wherein
the fuse has a width that is narrower than a width of the first portion and a width of the second portion.

13 . The voltage detection device according to claim 11 , further comprising:
fixtures that fix the first portion and the second portion to the holding body.

14 . The voltage detection device according to claim 9 , wherein
the base end portion is movably supported to the holding body.

15 . The voltage detection device according to claim 1 , wherein
the voltage detection portion comprises a base end portion that is movably supported to the holding body.

16 . The voltage detection device according to claim 11 , wherein
the fuse has a cross-sectional area that is smaller than a cross-sectional area of the first portion and a cross-sectional area of the second portion.

Assignees

• Aesc Japan Ltd

Inventors

• Monno Dai
• Amagai Ryuichi
• Nakai Masayuki
• Toyosaki Shinkichi
• Yanagihara Yasuhiro

Classifications

• H01M2200/103

  Fuse · CPC title

• H01M10/482 Primary

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M10/425

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M50/533

  characterised by the shape of the leads or tabs · CPC title