Battery Pack Power Distribution Layout for Easier Rear-End Servicing
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Solution Overview
Problem
The existing structure of battery packs in electric vehicles, where the power distribution device is positioned in the middle of the front and back directions, necessitates operating over multiple battery modules for maintenance, repair, or replacement, making it inconvenient for maintenance personnel.
Innovation Solution
The power distribution device is configured closer to one end of the battery pack, either the front or rear, with connectors at both ends, reducing the distance to the second connector and allowing easier access for servicing, repair, or replacement, and minimizing the wiring length and overall space occupied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the power distribution device is positioned in the middle of the front and back directions, then the battery pack structure is balanced, but the ease of operation for maintenance personnel deteriorates
Solution Approach 1:
The power distribution device is positioned asymmetrically within the battery pack, specifically closer to the rear end rather than in the center. This asymmetric placement allows maintenance personnel to access the device from the rear without needing to operate over battery modules, thereby improving ease of operation while maintaining structural balance through alternative design compensations
2Stability of the object's composition
If the power distribution device is positioned in the middle of the front and back directions, then the structural symmetry is maintained, but the wiring length increases
Solution Approach 1:
The power distribution device is positioned asymmetrically closer to the rear end of the battery pack. This placement reduces the wiring length to the rear connector while the first connector is positioned to balance the overall electrical layout, achieving optimal wiring efficiency without requiring central positioning
3Strength
If the power distribution device is positioned above both battery modules, then the device is centrally supported, but the installation complexity increases
Solution Approach 1:
The battery pack is divided into distinct regions with the power distribution device positioned above only the second battery module (closer to the rear). This segmentation simplifies installation by eliminating the need to span across the gap between modules, while the device remains properly supported through alternative mounting structures
4Ease of operation
If the power distribution device is positioned in the gap between battery modules, then the device is easily accessible, but the battery pack width increases
Solution Approach 1:
Instead of positioning the power distribution device horizontally in the gap between battery modules (which would increase pack width), the device is positioned vertically above the second battery module. This dimensional change maintains accessibility from the rear while keeping the battery pack width compact
Data Source
AI summary
A battery pack and a vehicle that can improve operational convenience are provided in the present invention. The battery pack includes a housing, wherein the front and rear ends of the housing are respectively equipped with a first connector and a second connector; a battery module configured within the housing, including a first battery module and a second battery module, with a gap configured between the first battery module and the second battery module; and a power distribution device electrically connected to the first connector and the battery module, and electrically connected to the second connector and the battery module. The power distribution device is arranged above the first battery module or the second battery module, and is closer to the second connector than the first connector.