Bus Bar Module Lid Layout for Visible Battery Wire Routing

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Solution Overview

Problem

The existing power supply device has a small gap in the lid, making it difficult to visually recognize the wiring state of the electric wire with respect to the electric wire wiring portion, and increasing the gap could lead to interference with peripheral members.

Innovation Solution

A power supply device configuration with a bus bar module that includes a bus bar chamber, an electric wire wiring portion with one side open and the other closed, and a lid with an opening portion to allow visual recognition of the electric wire, while preventing interference by mounting the bus bar module to the battery cell assembly with the lid facing inward.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Difficulty of detecting and measuring

If the gap of the lid is increased to make it easy to visually recognize the wiring state of the electric wire, then the visibility of wiring state is improved, but the electric wire may interfere with peripheral members

Engineering Contradiction:

Improvevisibility of wiring stateVSAvoidinterference with peripheral members

Core Design Contradiction:

Difficulty of detecting and measuringVSObject-affected harmful factors

Solution Approach 1:

The lid is inverted to face the battery cell assembly rather than outward, allowing the opening portion to provide visibility while the closed side protects the electric wire from peripheral interference

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The lid acts as an intermediary structure that mediates between the need for visibility and the need for protection, using its opening portion to allow visual inspection while its solid structure prevents external interference with the electric wire

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20230369695A1Power supply device

Publication Date: 2023.11.16 YAZAKI CORP

AI summary

A power supply device includes: a battery cell assembly including battery cells; and a bus bar module mounted to the battery cell assembly. The bus bar module includes a bus bar, an electric wire, and an electric wire wiring body. The electric wire wiring body includes: a bus bar chamber configured to accommodate the bus bar therein; an electric wire wiring portion having a first side opened and a second side closed, the electric wire wiring portion configured to accommodate the electric wire therein; and a lid arranged at an opening of the electric wire wiring portion. The lid has an opening portion through which the electric wire accommodated in the electric wire wiring portion is visible. The bus bar module is mounted to the battery cell assembly with the lid facing the battery cell assembly.