Central Sub Battery Pack for Drone Power Balance
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Solution Overview
Problem
Irregularities in load and state of charge among battery packs on flying bodies, such as drones, lead to inefficient energy utilization and reduced flight distances due to uneven charge/discharge rates and deterioration states, causing imbalances in the machine's power distribution.
Innovation Solution
A flying body design featuring a central sub power storage pack connected to multiple power storage packs via equalized wiring, ensuring balanced power distribution and utilizing a sub power storage pack to equalize capacities and provide auxiliary power, thereby stabilizing the machine's balance and extending flight duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple battery packs are connected to motors on a one-to-one basis, then each motor has dedicated power supply, but irregularities in remaining capacity occur among battery packs leading to reduced flight distance
Solution Approach 1:
The patent combines multiple battery packs with a sub-battery pack to form an integrated power system. The sub-battery pack is electrically connected to all main battery packs, allowing them to function as a unified power source that balances capacity utilization across all battery units, thereby extending flight distance while maintaining reliable power supply.
Solution Approach 2:
The sub-battery pack acts as an intermediary between the main battery packs and motors. It receives power from multiple battery packs and distributes it均衡ly, mediating the power flow to ensure balanced charge/discharge rates and prevent premature depletion of individual battery packs.
2Device complexity
If battery packs are distributed to match motor locations, then power distribution is simplified, but irregularities in load and state of charge cause uneven deterioration and reduced flyable distance
Solution Approach 1:
The patent merges the power distribution function by introducing a sub-battery pack that centrally manages power from multiple battery packs. This creates a hierarchical structure where the sub-battery pack equalizes capacity usage across all battery packs, preventing uneven deterioration and maximizing flyable distance despite the added structural element.
3Productivity
If a sub power storage pack is added to equalize capacities, then energy utilization is improved, but the weight and complexity of the power system increases
Solution Approach 1:
The sub-battery pack serves multiple functions: it equalizes capacity among battery packs, extends flight distance, balances load distribution, and prevents premature depletion of individual packs. By consolidating these functions into a single component, the design achieves high energy utilization efficiency without proportionally increasing system complexity and weight.
Data Source
AI summary
Flying body including body portion and a plurality of propellers radially disposed to be laterally symmetrical from body portion is provided with: a plurality of motors respectively rotating the plurality of propellers; a plurality of power storage packs respectively supplying currents to the plurality of motors; and sub power storage pack connected to the plurality of power storage packs by power wirings, respectively. The same number of motors of the plurality of motors are installed on each of the left and right sides, and the same number of power storage packs of the plurality of power storage packs are installed on each of the left and right sides. Sub power storage pack is installed on a lateral center line of body portion.