Busbar Module

Patent metadata

Field	Value
Publication number	US-2020396830-A1
Application number	US-202015930736-A
Country	US
Kind code	A1
Filing date	May 13, 2020
Priority date	Jun 17, 2019
Publication date	Dec 17, 2020
Grant date	—

Abstract

A busbar module includes: a circuit body having a flexible circuit board; busbars; and a holder. The circuit body has: a band-shaped main strip to be located to extend in a stacking direction of cells; a band-shaped first branch strip branched from the main strip and extending toward a corresponding busbar; and a second branch strip branched from the main strip and extending toward an external device. The first branch strip has: a bent portion extending in the stacking direction and having a bent shape around an axis crossing the stacking direction; and a busbar connection portion disposed closer to an end of the first branch strip than the bent portion and connected to the corresponding busbar. The second branch strip has a device connection portion to be connected to the external device.

First claim

1 . A busbar module to be attached to a battery assembly having a stack of a plurality of cells and to connect the plurality of cells to an external device, the busbar module comprising:
a circuit body having a flexible circuit board including a wiring pattern; a plurality of busbars to be connected to corresponding electrodes of the plurality of cells; and a holder holding the busbars and being extendable in a stacking direction of the plurality of cells, the circuit body comprising:
a band-shaped main strip to be located to extend in the stacking direction;
a band-shaped first branch strip branched from the main strip and extending toward a corresponding busbar among the plurality of the busbars; and
a second branch strip branched from the main strip and extending toward the external device,
the first branch strip comprising:
a bent portion extending in the stacking direction and having a bent shape around an axis intersecting the stacking direction; and
a busbar connection portion disposed closer to an end of the first branch strip than the bent portion and connected to the corresponding busbar,
wherein the bent portion includes portions at a different height than the main strip and the busbar connection portion,
the second branch strip comprising:
a device connection portion to be connected to the external device.

2 . The busbar module according to claim 1 , wherein
at least a part of the second branch strip extends in the stacking direction and has a bent shape around the axis intersecting the stacking direction.

3 . The busbar module according to claim 1 , wherein
the second branch strip branches off the main strip from a side edge of the main strip or from inside area of the main strip.

4 . The busbar module according to claim 1 , wherein
the first branch strip extends from the main strip toward one side in a thickness direction of the main strip, the second branch strip extends from the main strip toward the other side in the thickness direction of the main strip.

5 . The busbar module according to claim 1 , wherein
the device connection portion has a connector structure to be connected to a counterpart connector of the external device or a board connection structure to be connected to a circuit board of the external device.

6 . A busbar module to be attached to a battery assembly having a stack of a plurality of cells and to connect the plurality of cells to an external device, the busbar module comprising:
a circuit body having a flexible circuit board including a wiring pattern; a plurality of busbars to be connected to corresponding electrodes of the plurality of cells; and a holder holding the busbars and being extendable in a stacking direction of the plurality of cells, the circuit body comprising:
a band-shaped main strip to be located to extend in the stacking direction;
a band-shaped first branch strip branched from the main strip and extending toward a corresponding busbar among the plurality of the busbars; and
a second branch strip branched from the main strip and extending toward the external device,
the first branch strip comprising:
a bent portion extending in the stacking direction and having a bent shape around an axis intersecting the stacking direction; and
a busbar connection portion disposed closer to an end of the first branch strip than the bent portion and connected to the corresponding busbar,
the second branch strip comprising:
a device connection portion to be connected to the external device,
wherein at least a part of the second branch strip has a bent shape around the axis intersecting the stacking direction, and wherein the second branch strip branches off the main strip from inside area of the main strip.

Assignees

• Yazaki Corp

Inventors

• Yasuda Tomoji
• Ichikawa Yoshiaki
• Oga Tatsuya

Classifications

• H01M50/522

  Inorganic material · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M50/507

  comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules · CPC title

• H01M50/503

  characterised by the shape of the interconnectors · CPC title

• H01M50/291

  characterised by their shape · CPC title