Battery Pack Terminal Layout for Reduced Harness Routing
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Solution Overview
Problem
The existing power supply devices with battery groups having external output terminals of different polarities arranged diagonally require multiple harnesses or electric wires to connect them in series, leading to increased weight and size due to the need for routing these wires.
Innovation Solution
The power supply device configuration involves arranging two power storage element groups adjacent to each other, with their external terminals positioned to minimize the number of electric wires needed, using total output bus bars to connect the groups in parallel and reduce wire routing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external output terminals are arranged at diagonal positions of battery groups and connected in series, then electrical connection is achieved, but the number of harnesses or electric wires increases
Solution Approach 1:
The patent merges the functions of multiple separate connection points into a single shared side. By arranging external terminals on adjacent sides of battery groups, multiple electrical connections are achieved through a reduced number of wire routes, combining what would otherwise require separate diagonal routing into a consolidated adjacent configuration.
Solution Approach 2:
The patent transitions from diagonal positioning (one-dimensional optimization) to adjacent side positioning (two-dimensional optimization). This spatial reconfiguration changes the routing dimension from corner-to-corner diagonal paths to side-adjacent direct paths, reducing the complexity of wire routing while maintaining electrical connection reliability.
2Reliability
If multiple harnesses or electric wires are used to connect external output terminals, then electrical connection is ensured, but weight of the battery assembly increases
Solution Approach 1:
The patent combines multiple wire routing functions into fewer wire routes by positioning external terminals on adjacent sides. This merging of connection paths reduces the total quantity of harnesses and electric wires required, directly decreasing the weight of the battery assembly while maintaining reliable electrical connections.
3Reliability
If multiple harnesses or electric wires are used to connect external output terminals, then electrical connection is achieved, but size of the battery assembly increases due to routing space requirements
Solution Approach 1:
The patent consolidates wire routing paths by arranging external terminals on adjacent sides rather than diagonal positions. This merging of routing functions reduces the number of separate wire channels needed, thereby decreasing the overall routing space required and reducing the volume of the battery assembly.
Solution Approach 2:
The patent optimizes spatial utilization by transitioning from diagonal corner routing to adjacent side routing. This dimensional reconfiguration allows wires to be routed more efficiently with shorter paths and reduced routing space requirements, decreasing the overall size of the battery assembly while ensuring reliable electrical connections.
Data Source
AI summary
A power supply device disclosed by the present specification includes: a first power storage element group that has a pair of first external terminals having different polarities, and includes a plurality of power storage elements; and a second power storage element group that has a pair of second external terminals having different polarities, and includes a plurality of power storage elements. The first power storage element group and the second power storage element group are arranged adjacent to each other in a front-rear direction, the first external terminals are provided at the front edge on the second power storage element group side of the first power storage element group, and the second external terminals 48 are arranged to be adjacent to the first external terminals at a rear edge on the first power storage element group side of the second power storage element group.