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CN-122029703-A - Connection module and battery pack

CN122029703ACN 122029703 ACN122029703 ACN 122029703ACN-122029703-A

Abstract

The connection module (10) is provided with a first bus bar (11) covered with a first resin (11 a), a second bus bar (12) covered with a second resin (12 a), and a plurality of resin connection sections (13). A resin connection portion (13) connects the first bus bar (11) and the second bus bar (12). The resin connection portion (13) is connected to the first resin (11 a) and the second resin (12 a). Spaces (14) are formed between the plurality of resin connection portions (13).

Inventors

  • Iwata Takahisa
  • NAKAI MASAYUKI
  • Matsura Moritaka

Assignees

  • 株式会社AESC日本

Dates

Publication Date
20260512
Application Date
20241018
Priority Date
20231018

Claims (8)

  1. 1. A connection module is provided with: A first bus bar covered with a first resin; a second bus bar covered with a second resin, and A plurality of resin connection portions made of resin for connecting the first bus bar and the second bus bar, The resin connection portion is connected to the first resin and the second resin, Spaces are formed between the plurality of resin connection portions.
  2. 2. The connection module of claim 1, wherein, A groove is formed in the resin connection portion.
  3. 3. The connection module according to claim 2, wherein, The depth of the groove is 30% to 50% of the thickness of the resin joint.
  4. 4. The connection module according to any one of claim 1 to 3, wherein, The resin connection portion has a through hole penetrating in a thickness direction of the resin connection portion.
  5. 5. The connection module according to any one of claim 1 to 3, wherein, The thickness of the resin connection portion is smaller than the thicknesses of the first bus bar and the second bus bar.
  6. 6. The connection module according to any one of claim 1 to 3, wherein, The thickness of the resin connection part is more than 2.0mm and less than 3.0 mm.
  7. 7. The connection module according to any one of claim 1 to 3, wherein, At least one of the first resin, the second resin, and the resin connection portion includes glass fibers.
  8. 8. A battery pack accommodating a battery module includes a positive electrode terminal and a negative electrode terminal, The battery pack is characterized in that, The connection module according to any one of claims 1 to 3 is used for at least one of a path for electrically connecting the positive electrode terminal and the battery module and a path for electrically connecting the negative electrode terminal and the battery module.

Description

Connection module and battery pack Technical Field The present invention relates to a connection module and a battery pack. Background A technique related to a plurality of bus bars molded is disclosed in patent document 1, for example. Further, a technique related to an insert molding method capable of suppressing deformation of a bus bar at the time of molding is disclosed in, for example, patent document 2. Prior art literature Patent literature Patent document 1 U.S. patent application publication No. 2020/0106198 specification Patent document 2 Japanese patent application laid-open No. 2011-143711 Disclosure of Invention Problems to be solved by the invention When the molded bus bar in the battery pack receives an impact from the outside, there is a possibility that the resin portion breaks and the metal portion of the bus bar is exposed. If the metal is exposed, there is also a risk of short-circuiting. An object of the present invention is to suppress exposure of a metal portion of a molded bus bar. Means for solving the problems The invention described in claim 1 is a connection module comprising: A first bus bar covered with a first resin; a second bus bar covered with a second resin, and A plurality of resin connection portions made of resin for connecting the first bus bar and the second bus bar, The resin connection portion is connected to the first resin and the second resin, Spaces are formed between the plurality of resin connection portions. Effects of the invention According to the above aspect of the present invention, the metal portion of the molded bus bar can be suppressed from being exposed. Drawings Fig. 1 is a schematic perspective view of a battery pack according to a first embodiment. Fig. 2 is a schematic perspective view of the connection module according to the first embodiment, in which the portion a in fig. 1 is enlarged. Fig. 3 is a plan view as seen from above in fig. 2. Fig. 4 is a schematic perspective view of a connection module according to a second embodiment, in which a portion a in fig. 1 is enlarged. Fig. 5 is a plan view as seen from above in fig. 4. Detailed Description Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are denoted by the same reference numerals, and description thereof is omitted as appropriate. < First embodiment > (Battery pack 1) Fig. 1 is a schematic perspective view of a battery pack 1 according to a first embodiment. In the first embodiment, the battery pack 1 is mounted in an automobile as an example. Specifically, the battery pack 1 is mounted between the front wheels and the rear wheels of the automobile. Hereinafter, the battery pack 1 will be described as being mounted in an automobile unless otherwise specified. However, the battery pack 1 can be applied to applications other than automobiles. The battery pack 1 according to the first embodiment includes a connection module 10, a junction box 20, a connector 30, and a battery module 40. The junction box 20 is disposed on the upper surface of the battery module 40. Wiring is housed in the junction box 20 together with electronic components such as resistors, relays, and fuses. The connector 30 is a portion of the battery pack 1 connected to an external device. The connector 30 may be, for example, a connector connected to a high-voltage device or a connector connected to a low-voltage device. (Connection Module 10) Fig. 2 is a schematic perspective view of the connection module 10 according to the first embodiment, in which the portion a in fig. 1 is enlarged. Fig. 3 is a plan view as seen from above in fig. 2. The connection module 10 will be described with reference to fig. 2 and 3. In the first embodiment, the connection module 10 electrically connects the junction box 20 and the connector 30. The connection module 10 is molded and covered with resin. The connection module 10 includes a first bus bar 11, a second bus bar 12, and a plurality of resin connection portions 13. The first bus bar 11 and the second bus bar 12 have a plate-like shape. The connection module 10 may be formed by integrally molding the first bus bar 11, the second bus bar 12, and the plurality of resin connection portions 13. The first bus bar 11 is composed of a metal portion covered with a resin portion (first resin 11 a). The first bus bar 11 connects one terminal of the junction box 20 and one terminal of the connector 30. The second bus bar 12 is composed of a metal portion covered with a resin portion (second resin 12 a). The second bus bar 12 connects one terminal of the junction box 20 and one terminal of the connector 30. The resin connection portion 13 connects the first bus bar 11 and the second bus bar 12. The resin connection portion 13 is connected to the first resin 11a and the second resin 12 a. The resin connection portion 13 is provided between the first bus bar 11 and the second bus bar 12. The resin conn