Cell Wiring Module with Inclined Wire Routing
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Solution Overview
Problem
The existing cell wiring module configuration requires significant space for wire connections, which hinders size reduction and can lead to wire lengthening and protrusion, affecting insulation and assembly efficiency.
Innovation Solution
The cell wiring module incorporates inclined wire paths and partitioned holding structures with recesses and through-holes to minimize space requirements, prevent wire lengthening, and ensure secure wire routing, allowing for a compact design and improved insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the wire extends in the direction orthogonal to the connecting direction of the bus bar, then the wire connection is simple, but the space required increases and the module size cannot be reduced
Solution Approach 1:
The patent changes the wire extending direction from orthogonal (90 degrees) to an inclined angle (45-60 degrees) relative to the bus bar connecting direction. This dimensional change in the wire path allows the wire to reach the detection terminal while occupying less space in the orthogonal direction, thereby reducing the overall module size while maintaining connection simplicity.
Solution Approach 2:
The patent modifies the angle parameter of wire extension from 90 degrees (orthogonal) to an inclined angle of 45-60 degrees. This parameter change optimizes the space utilization by reducing the projection of the wire in the orthogonal direction, allowing for a more compact module design without compromising the ease of wire connection.
2Length of moving object
If the wires extend in the connecting direction of the connection members, then the wire path is short, but the wires are likely to be long and protrude
Solution Approach 1:
Instead of extending wires purely in the connecting direction (horizontal) or orthogonal direction (vertical), the patent introduces an inclined dimension (45-60 degrees). This allows the wire to reach the detection terminal placed on the bus bar while controlling the overall wire length and preventing protrusion, as the inclined path efficiently bridges both horizontal and vertical distances.
Solution Approach 2:
The detection terminal serves as an intermediary element placed directly on the bus bar at strategic positions. By positioning the detection terminal on the bus bar rather than at the end of a long wire extension, the patent reduces the required wire length and prevents wire protrusion, while the inclined wire path provides an efficient connection route.
3Reliability
If the detection terminal is placed on the connection member with a flat plate portion, then the connection is secure, but the module size increases
Solution Approach 1:
The detection terminal is nested directly on top of the bus bar (connection member) rather than being a separate mounted component. The flat plate portion of the detection terminal rests on the bus bar surface, and corner portions are inserted into recesses or through-holes of the bus bar, creating a compact nested structure that ensures secure connection while minimizing the occupied space.
Solution Approach 2:
The detection terminal uses a flat plate portion with corner portions that are strategically designed to fit into specific locations (recesses or through-holes) on the bus bar. This local structural quality provides secure mechanical connection and electrical contact at the specific interaction points, while the overall compact design maintains small module size.
Data Source
AI summary
A cell wiring module has a plurality of connection members connecting adjacent electrode terminals of a plurality of single cells having positive and negative electrode terminals, a plurality of holding portions holding the connection members, voltage detection terminals placed on the connection members and connected to terminal portions of wires, and wire insertion portions through which the wires connected to the voltage detection terminals are inserted. The wires extend from the voltage detection terminals in the direction inclined relative to a direction orthogonal to a connecting direction of the connection members. The wires extending in this direction are inserted through the wire insertion portions.