Bus Bar Module Routing Path Segmentation for Thermistor Interference

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Solution Overview

Problem

Conventional bus bar modules lack flexibility in routing electrical lines, limiting the ability to optimize routing routes according to specific purposes and potentially causing interference with thermistors.

Innovation Solution

A bus bar module design featuring multiple bus bars and an insulating case with a routing path that includes first and second routing paths parallel to the bus bars and connection paths, allowing for flexible routing and bypassing of thermistors to prevent interference, with electrical line pressers to secure the lines in place.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single routing path is used for electrical lines, then the structure is simple, but the flexibility of routing route is reduced

Engineering Contradiction:
Improveflexibility of routing routeVSAvoidrouting path structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The routing path is divided into multiple segments: first routing path extending along the first bus bar group, second routing path extending along the second bus bar group, and connection paths connecting them. This segmentation allows electrical lines to be routed through different paths depending on requirements, improving routing flexibility while maintaining manageable structural complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insulating case is designed to accommodate multiple routing paths that can serve different functions. The first and second routing paths can handle different electrical line routing needs, and connection paths provide alternative routes, making the routing system versatile and adaptable to various configuration requirements

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If electrical lines are routed directly through the insulating case, then routing is simple, but interference with thermistors may occur

Engineering Contradiction:
Improveinterference avoidance with thermistorVSAvoidrouting path configuration
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The routing path is segmented into first and second routing paths that extend along different bus bar groups, with connection paths providing alternative routes. This segmentation allows electrical lines to bypass thermistor locations, preventing interference while maintaining reliable routing

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Connection paths act as intermediary routes that allow electrical lines to transition between the first and second routing paths. These intermediary paths provide alternative routing options that can avoid thermistor locations, ensuring reliable operation without direct interference

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If multiple routing paths are provided for electrical lines, then routing flexibility is improved, but the routing path structure becomes complex

Engineering Contradiction:
Improverouting route selectionVSAvoidrouting path structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple routing paths (first routing path, second routing path, and connection paths) are merged into a single integrated insulating case structure. This combining approach provides multiple routing options and flexibility while avoiding the complexity of separate independent routing systems, as all paths are unified within one case

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS11735798B2Bus bar module
Publication Date: 2023.08.22 YAZAKI CORP
  • US11735798B2 patent drawing
  • US11735798B2 patent drawing
  • US11735798B2 patent drawing

AI summary

A bus bar module includes bus bars electrically connected with battery cells included in a battery module, and an insulating case including a housing unit that accommodates the bus bars and a routing path in which a voltage detection line connected with the bus bars is routed. The bus bars include a first bus bar group arrayed in a direction in which the battery cells are arranged, and a second bus bar group parallel to the first bus bar group and arrayed in the direction in which the battery cells are arranged. The routing path includes a first routing path extending along the first bus bar group, a second routing path extending along the second bus bar group, and at least one connection path connecting the first routing path and the second routing path.