Wiring module
A wiring module that is used in a battery assembly in which a columnar positive electrode and a columnar negative electrode of a plurality of batteries formed in a thin-type rectangular parallelepiped shape are arranged alternately. The wiring module includes a terminal pattern on a surface of an insulating resin substrate connected to the columnar positive electrode and the columnar negative electrode; a voltage detection wiring pattern on the surface connected to the terminal pattern; a fuse pattern on the surface interposed in the voltage detection wiring pattern; and an insulating resin layer that covers a peripheral portion of the terminal pattern, the voltage detection wiring pattern, and the fuse pattern are covered with the insulating resin layer A pair of through-holes, into which the columnar positive electrode and the columnar negative electrode are inserted, is formed in the terminal pattern and the insulating resin substrate.
1. A wiring module that is used in a battery assembly in which a columnar positive electrode and a columnar negative electrode of a plurality of batteries formed in a rectangular parallelepiped shape are arranged alternately, the wiring module comprising:
an insulating resin substrate;
a terminal pattern that is provided on one surface of the insulating resin substrate and is connected to the columnar positive electrode and the columnar negative electrode of the batteries which are adjacent to each other;
a voltage detection wiring pattern that is formed on the one surface and is connected to the terminal pattern at a connecting portion;
a fuse pattern that is formed on the one surface and is interposed in a part of the voltage detection wiring pattern; and
an insulating resin layer that completely covers a peripheral portion of the terminal pattern, an entirety of the voltage detection wiring pattern at the connecting portion, and an entirety of the fuse pattern such that the peripheral portion of the terminal pattern, the entirety of the voltage detection wiring pattern at the connecting portion, and the entirety of the fuse pattern are set in the insulating resin layer,
wherein a pair of through-holes, into which the columnar positive electrode and the columnar negative electrode of the batteries are inserted, is formed in the terminal pattern and the insulating resin substrate.
2. The wiring module according to claim 1 ,
wherein the insulating resin substrate is formed in a strip shape in correspondence with an arrangement direction of the battery assembly, and
the terminal pattern is formed as an overhang portion that overhangs from a strip-shaped lateral edge of the insulating resin substrate.
3. The wiring module according to claim 1 , further comprising:
an auxiliary conductive plate that is arranged to overlap an exposed surface of the terminal pattern which is not covered with the insulating resin layer; and
a protective resin layer that surrounds an outer periphery of a lateral surface of the auxiliary conductive plate, and covers the insulating resin layer in a region including the peripheral portion of the terminal pattern.
4. The wiring module according to claim 1 , wherein the terminal pattern that is connected to the electrodes of the batteries, the voltage detection wiring pattern that is connected to the terminal pattern, and the fuse pattern are integrally formed on the insulating resin substrate.
5. The wiring module according to claim 4 , wherein the voltage detection wiring pattern is connected to the terminal pattern as one component without crimping.