Multi-Battery Charge Balancing for Safe UAV Battery Storage
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Solution Overview
Problem
Existing battery management systems cause significant energy waste when storing batteries at high electric quantities, leading to safety issues such as bulging and fire risks, particularly with lithium batteries.
Innovation Solution
A multi-battery management apparatus comprising at least two batteries, a mutual-charging switch, a voltage conversion module, and a microprocessor that monitors and adjusts the charging and discharging of batteries to maintain an optimal electric quantity range, preventing overcharge and overdischarge by allowing high-electricity batteries to charge low-electricity ones and using a supplemental power supply as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the battery is stored at high electric quantity to ensure sufficient power availability, then the power availability is improved, but safety risks such as bulging and fire accidents increase
Solution Approach 1:
The system proactively balances battery electric quantities before critical levels are reached. The microprocessor continuously monitors electric quantities and initiates mutual charging operations in advance, preventing both safety risks from high electric quantity and ensuring power availability is maintained at optimal levels.
Solution Approach 2:
The battery system serves itself by using the excess electric quantity from high-charged batteries to charge low-charged batteries through mutual charging. This self-balancing mechanism eliminates the need for external charging equipment while maintaining safety and power availability, with the system automatically redistributing energy among batteries.
2Object-affected harmful factors
If the discharge circuit is used to reduce battery electric quantity for safety, then the safety risk is reduced, but significant energy waste occurs
Solution Approach 1:
Instead of discarding excess electric quantity through discharge circuits that waste energy, the system converts the potentially harmful high electric quantity into a useful resource. The excess energy from high-charged batteries is redirected to charge low-charged batteries, transforming a safety hazard into a beneficial energy redistribution mechanism that eliminates waste.
Solution Approach 2:
Rather than discarding excess electric quantity through energy-wasting discharge circuits, the system recovers and redistributes this energy to batteries with lower charge levels. This recovery approach maintains total energy utilization while achieving safety compliance, preventing the energy waste inherent in traditional discharge methods.
3Device complexity
If multiple batteries are managed independently with separate charging and discharging circuits, then the control simplicity is maintained, but energy efficiency deteriorates
Solution Approach 1:
The system merges the charging functions of multiple batteries into a unified mutual charging network. Instead of treating each battery independently with separate circuits, batteries are interconnected through switching elements that enable them to charge each other, creating a consolidated energy management system that improves efficiency while maintaining manageable complexity through centralized microprocessor control.
Solution Approach 2:
Each battery in the system serves multiple functions: it can be charged by the power supply, charge other batteries through mutual charging, and have its electric quantity monitored by the microprocessor. This multi-functionality eliminates the need for separate dedicated circuits for each function, reducing overall system complexity while improving energy efficiency through interconnected operation.
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 solution reduces energy waste and ensures safe battery storage by balancing electric quantities, particularly effective for large-electricity batteries, thereby preventing safety accidents and extending battery life.
Implementation Method 1
a voltage conversion module; controlling the voltage conversion module and the corresponding mutual-charging switch to switch on, so that, in the abnormal batteries, an abnormal battery having the electric quantity data greater than a first preset electric quantity value charges an abnormal battery having the electric quantity data less than a second preset electric quantity value
Data Source
AI summary
Embodiments are a multi-battery management apparatus and an unmanned aerial vehicle. The apparatus includes at least two batteries, a mutual-charging switch, a voltage conversion module and a microprocessor; each of the batteries is connected to the microprocessor, and each of the batteries is also connected to the voltage conversion module by the mutual-charging switch; and the microprocessor is also respectively connected to a control terminal of the mutual-charging switch and the voltage conversion module. In the present invention, when an abnormal battery of which an electric quantity does not meet the storage condition occurs, a corresponding mutual-charging switch is controlled to be switch on, so that a battery with a higher electric quantity in the abnormal batteries charges a battery with a lower electric quantity.