Battery Pack Support Frame Nesting for Low-Height Power Units
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric power units with compact battery packs have a higher overall height due to the cuboid shape of the battery pack, which does not efficiently utilize space and exceeds the mounting size limitations of fuel engines they replace.
Innovation Solution
The electrically-driven power unit features a compact battery pack design where the battery pack is supported by an arch-shaped supporting portion and a concave portion, allowing for a more compact structure that reduces overall height while maintaining battery endurance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the battery pack is designed as a cuboid shape and mounted on top of the motor through a frame, then the battery pack structure is simple and easy to manufacture, but the overall height of the electric power unit increases and exceeds the mounting size limitation of fuel engines
Solution Approach 1:
The battery pack is nested within the space formed by the supporting frame and motor, with the supporting frame shaped around the periphery of the motor. The arch-shaped supporting portion and concave portion create a nested configuration where the battery pack fits into the available space rather than sitting on top, reducing overall height while maintaining structural simplicity
Solution Approach 2:
The supporting frame is shaped around the periphery of the motor in a three-dimensional configuration, creating arch-shaped supporting portions that extend laterally. This dimensional approach allows the battery pack to be supported from the sides and below rather than from above, redistributing the support structure in multiple dimensions to reduce vertical height
2Length of stationary object
If the battery pack height is reduced to meet mounting size limitations, then the overall size of the electric power unit decreases, but the battery endurance may be compromised
Solution Approach 1:
The supporting frame provides localized support through arch-shaped supporting portions that contact specific areas of the battery pack bottom. This localized support structure allows for height reduction in specific regions while maintaining overall battery pack integrity and capacity, enabling compact design without compromising endurance
Solution Approach 2:
The supporting frame exhibits asymmetric configuration with arch-shaped supporting portions positioned at specific locations around the motor periphery. This asymmetric design optimizes the distribution of support points to achieve compact height while maintaining battery pack stability and functional capacity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design effectively reduces the overall height of the electrically-driven power unit, enabling it to meet the size limitations of fuel engines while maintaining battery endurance, thus facilitating the miniaturization and replacement of fuel engines with electric power units.
Implementation Method 1
lower parts of both sides of the supporting frame are respectively mounted on the supports on the corresponding sides through elastic vibration damping bodies
Implementation Method 2
elastic vibration damping bodies
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention discloses an electrically-driven power unit of a compact battery pack, which comprises a motor and a battery pack, wherein the motor is mounted on a base, the battery pack is supported on an upper part of the motor through a supporting frame, the supporting frame is shaped around the periphery of the motor, an arch-shaped supporting portion matched with the upper part of the motor is formed on an upper part of the supporting frame, a concave portion matched with the arch-shaped supporting portion is arranged at a bottom of the battery pack, and the arch-shaped supporting portion of the supporting frame is supported in the concave portion of the battery pack. The present invention can reduce the overall height of the electrically-driven power unit on the premise of not reducing the endurance of the battery pack so as to satisfy the overall mounting size limitation.