Integrated Buck-Boost Battery Management Switching Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery management systems require four or more power switches to charge, discharge, and modify voltages, leading to inefficiency due to the complexity of the switching circuits.
Innovation Solution
The system employs only two switching power switches, utilizing a controller and MOSFET switches in combination with an inductor to manage charging and discharging, and adjust voltages efficiently by alternating the switching states of these switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If four or more power switches are used in conventional battery management systems, then the battery can be charged, discharged, and voltage can be modified, but the circuit complexity increases and efficiency decreases
Solution Approach 1:
The patent combines multiple switching functions into a single integrated switch that can operate in different states (first state for charging, second state for discharging, third state for voltage modification). This merging of functions reduces the number of separate power switches from four or more to just one, thereby reducing circuit complexity while maintaining full battery management capability.
Solution Approach 2:
The single integrated switch is designed to perform multiple functions: charging the battery, discharging the battery, and modifying voltage levels. By making the switch universal and multi-functional, the system eliminates the need for multiple dedicated switches for each function, thus reducing overall device complexity while preserving adaptability.
2Reliability
If four or more power switches are used in conventional battery management systems, then complete battery control is achieved, but power loss increases due to inefficiency
Solution Approach 1:
By merging multiple switching operations into a single integrated switch with coordinated state transitions, the patent reduces the number of switching events and associated power losses. The single switch architecture minimizes resistive losses and switching losses compared to multiple separate switches, thereby reducing overall energy loss while maintaining reliable battery control.
3Adaptability or versatility
If multiple power switches are used, then battery management functions are comprehensive, but the switching process becomes complex and inefficient
Solution Approach 1:
The patent merges voltage modification functionality into the same integrated switch that handles charging and discharging. The single switch can transition between different states to achieve voltage modification without requiring separate switching circuits, thereby simplifying the overall switching process while maintaining comprehensive voltage control capability.
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 approach significantly increases the efficiency of battery management by reducing power loss and simplifying the switching process, allowing for effective charging and discharging operations while matching voltage requirements.
Implementation Method 1
an inductor is electrically connected to the second connection
Data Source
AI summary
For managing a battery, an apparatus includes a first switch electrically connected to a first connection and a second connection. At least one of a load and a power supply is electrically connected the first connection. In addition, an inductor is electrically connected to the second connection. A second switch is electrical connected to the first connection and electrically connected to the common. The third switch is electrically connected to a third connection and electrically connected to the battery. The fourth switch is electrically connected to the third connection and electrical connected to the common. The inductor is also electrical connected the third connection.