JP2019204691A - Flat harness - Google Patents

Abstract

To provide an inexpensive flat harness for a battery module capable of easily flattening a plurality of wires.SOLUTION: The flat harness 10 obtained by arranging a plurality of wires 11 in parallel to flatten, and connected to a bas bar 20 between electrode terminals 32 of a group of electrode terminals arranged in one row of a battery module 30 composed of a plurality of battery cells 31 comprises forming into a flat form by wrapping a plurality of the wires 11 arranged in parallel on a wiring route H for wiring the wires 11 in a longitudinal direction of the battery module 30 with an insulating material 12 having an adhesive on one side thereof.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a flat harness connected to a bus bar between electrode terminals of an electrode terminal group arranged in a row of battery modules including a plurality of battery cells.

  For example, Patent Document 1 discloses a flat cable connected to a bus bar between electrode terminals of an electrode terminal group arranged in a row of battery modules. The flat cable includes a linear conductor connected to the bus bar, a covering portion that covers the linear conductor, and a bus bar holding portion that holds the bus bar.

JP 2017-1112066 A JP 2009-179117 A

  The conventional flat cable is used as a voltage detection line connected to a battery monitoring unit such as a hybrid electric vehicle (HEV) or an electric vehicle (EV). For example, it is a flexible printed wiring board (FPC). Development of a harness that is expensive and flattened using a plurality of round electric wires is desired.

  Then, this invention is made | formed in order to solve the above-mentioned subject, and it aims at providing the cheap flat harness for battery modules which can flatten a some electric wire easily.

  The present invention is a flat harness that is connected to a bus bar between electrode terminals of a group of electrode terminals arranged in a row of battery modules composed of a plurality of battery cells, and is flattened by arranging a plurality of electric wires in parallel. The plurality of electric wires arranged in parallel on the wiring path for arranging the electric wires in the longitudinal direction of the module are wrapped in an insulating material having an adhesive material on one side and held in a flat shape, and the adhesive material is It is characterized by being bonded to a plurality of electric wires.

  According to the present invention, a plurality of wires can be easily flattened by wrapping the plurality of wires with an insulating material having an adhesive material on one side and holding the wires in a flat shape. Thereby, the flat harness for battery modules can be provided at low cost.

It is a top view which shows the state which connected the flat harness of 1st Embodiment of this invention to the battery module. (A) is sectional drawing which follows the AA line in FIG. 1, (b) is sectional drawing which follows the BB line in FIG. It is a perspective view of the principal part of the flat harness of 2nd Embodiment of this invention. It is a perspective view which shows the state before lamination | stacking of the flat harness of 3rd Embodiment of this invention in a partial cross section. It is a perspective view which shows the state after lamination | stacking of the flat harness of the said 3rd Embodiment in a partial cross section.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a plan view showing a state in which the flat harness according to the first embodiment of the present invention is connected to a battery module, FIG. 2A is a cross-sectional view taken along the line AA in FIG. 1, and FIG. It is sectional drawing which follows the BB line in 1. FIG.

  As shown in FIG. 1 and FIGS. 2A and 2B, the flat harness 10 is formed between the adjacent electrode terminals 32 and 32 of the electrode terminal group arranged in a line of the battery module 30 including a plurality of battery cells 31. Voltage detection connected to a battery monitoring unit (not shown) such as a hybrid electric vehicle (HEV) or an electric vehicle (EV), for example. It is used as a line.

  That is, the flat harness 10 includes a plurality of electric wires 11 arranged in parallel on a wiring path H for arranging electric wires in the longitudinal direction of the battery module 30, on one side of one adhesive tape (insulating material) 12 ( It is formed by placing the adhesive tape 12 on the adhesive material 13 laminated on the inner surface 12a, folding the adhesive tape 12 from one side of the wire 11 to both sides, bonding the adhesive tape 13 together, wrapping it in a flat shape and holding it. Yes.

  As shown in FIGS. 2A and 2B, the electric wire 11 includes a core wire 11 a and an insulating coating 11 b covering the core wire 11 a, and the adjacent electrode terminals 32 of the plurality of battery cells 31 of the battery module 30. As many wires 11 as the number of bus bars 20 connected to 32 are arranged in parallel without gaps. And the one end side of the core wire 11a of each electric wire 11 is connected to the center of the side surface 20c of the corresponding bus bar 20 by welding.

  One adhesive tape 12 is formed by laminating an adhesive material 13 on one side 12a. As shown in FIGS. 2A and 2B, the both ends of the adhesive tape 12 that are bent are bonded to the upper and lower surfaces 20 a and 20 b of the bus bar 20 on the bus bar 20 side. The bent ends of the tape 12 (both adhesive materials 13) are bonded to each other.

  In addition, the other end side of the core wire 11a of each electric wire 11 is connected to a battery monitoring unit and used as a voltage detection line. As shown in FIG. 1, the bus bar 20 is formed in a rectangular plate shape, and a pair of attachment holes 21 and 21 are formed on both sides of the bus bar 20 so as to penetrate through and connect adjacent electrode terminals 32.

  According to the flat harness 10 of the above embodiment, the plurality of electric wires 11 can be easily held by wrapping the electric wires 11 with one adhesive tape 12 having the adhesive material 13 on one side 12a and holding the same in a flat shape. Can be flattened. Thereby, the flat harness 10 for battery modules can be formed with the cheap electric wire 11, and can be provided.

  Moreover, since the bus bar 20 connected to one end side of the core wire 11a of each electric wire 11 by welding is also bonded and integrated (modularized) to both ends of the adhesive tape 12 in the flat harness 10, The operation | work which connects the flat harness 10 to the electrode terminals 32 and 32 which adjoin the several battery cell 31 of the battery module 30 can be performed easily.

  Furthermore, the plurality of electric wires 11 are wrapped with a single adhesive tape 12 having an adhesive material 13 on one side 12a and flattened to form the flat harness 10, thereby eliminating the need for protection with a resin case or the like and reducing the weight. In addition, a reduction in height (thinning) can be achieved.

  FIG. 3 is a perspective view of a main part of the flat harness according to the second embodiment of the present invention.

  The flat harness 10 ′ of the second embodiment is a reverse harness for absorbing excess length between a plurality of electric wires 11 formed by wrapping in a flat shape with a single adhesive tape 12 and the adjacent bus bars 20, 20 of the adhesive tape 12. U-shaped bent portions 14 are integrally formed.

  In the flat harness 10 ′ of the second embodiment, the expansion / contraction of the plurality of battery cells 31 and the expansion / contraction of the plurality of battery cells 31 are absorbed by expansion / contraction of the inverted U-shaped bent portion 14 for absorbing the excess length. The flat harness 10 ′ can be easily connected to the adjacent electrode terminals 32, 32.

  FIG. 4 is a perspective view showing the state before lamination of the flat harness according to the third embodiment of the present invention in a partial cross section, and FIG. 5 is a perspective view showing the state after lamination of the flat harness in a partial cross section.

  As shown in FIG. 4, the flat harness 10 ″ according to the third embodiment is provided with two sets of a plurality of electric wires 11 arranged in parallel with no gap therebetween, with a gap S therebetween, as shown in FIG. In addition, one adhesive tape 12 is folded back and overlapped from the portion of the gap S between the two sets of the plurality of electric wires 11, and the plurality of electric wires 11 are laminated in two upper and lower layers. A surplus length portion 15 that absorbs the bending is provided at a portion facing the gap S located above the two sets of the plurality of electric wires 11 before the bending.

  In the flat harness 10 ″ of the third embodiment, the flat harness 10 ″ can be used as a voltage detection line for the battery monitoring unit even in the battery module 30 having many battery cells 31.

  In addition, according to each said embodiment, although the flat harness was used as a voltage detection line for battery monitoring units, you may use it for uses other than a voltage detection line.

10, 10 ', 10 "flat harness 11 electric wire 12 single adhesive tape (insulating material)
12a Single side 13 Adhesive material 14 Bending part 20 Bus bar 30 Battery module 31 Battery cell 32 Electrode terminal H Routing route S Gap

Claims (5)

A flat harness connected to a bus bar between electrode terminals of an electrode terminal group arranged in a row of battery modules composed of a plurality of battery cells, wherein a plurality of electric wires are arranged in parallel and flattened,
The plurality of electric wires arranged in parallel on the wiring path for arranging the electric wires in the longitudinal direction of the battery module are wrapped in an insulating material having an adhesive material on one side and held in a flat shape, and the adhesive material Is bonded to the plurality of electric wires. The flat harness according to claim 1,
The insulating material is a single adhesive tape having an adhesive material on one side,
A flat harness comprising: the one adhesive tape folded from one side to both sides of the plurality of electric wires and bonded together with the adhesive material and wrapped in a flat shape. The flat harness according to claim 2,
A flat harness comprising a plurality of electric wires wrapped in a flat shape with the adhesive tape and a bending portion for absorbing excess length formed in the adhesive tape. The flat harness according to claim 1 or 2,
2. A flat harness comprising a plurality of electric wires arranged in parallel with no gap provided in parallel with a gap therebetween. The flat harness according to claim 4,
A flat harness, wherein the one piece of adhesive tape is folded and overlapped from a portion of the gap between the two sets of plural electric wires, and the plural electric wires are laminated in two upper and lower layers.

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