Energy Balancing Circuit with Segmented Boost Branches
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In battery packs with batteries of different specifications, energy distribution becomes unbalanced due to varying voltages, internal resistances, and capacities, leading to shortened battery life, and existing solutions to balance energy distribution increase circuit losses by boosting output voltage.
Innovation Solution
An energy balancing circuit with a coupling branch and receiving branches, where receiving coils are coupled electromagnetically and connected to rectifier branches with boost branches to adjust energy distribution based on impedance differences, allowing energy redistribution without altering the input voltage, thus maintaining stable losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the output voltage of the controlled alternating current source is increased to improve balancing capability, then the energy distribution balancing among batteries is improved, but the output power and circuit losses increase
Solution Approach 1:
The patent divides the receiving end into multiple independent receiving subbranches (first receiving subbranch, second receiving subbranch, etc.), each with its own rectifier branch and boost branch. This segmentation allows independent control of energy distribution to each battery, enabling precise balancing without increasing overall output power. Each subbranch can be optimized individually based on the specific energy needs of connected batteries.
Solution Approach 2:
The patent introduces controllable boost branches that can dynamically adjust the voltage and power distribution to different receiving subbranches based on real-time battery status. The boost branches are configured to increase power specifically when energy differences between batteries are detected, providing dynamic adaptation without continuous high-power operation. This dynamic adjustment enables improved balancing capability while maintaining stable overall circuit losses.
2Reliability
If the output power of the controlled alternating current source is increased to improve balancing capability, then the energy distribution balancing among batteries is improved, but the circuit losses increase
Solution Approach 1:
The receiving end is divided into multiple independent receiving subbranches with separate rectifier and boost circuits. This allows the system to distribute power selectively to only those batteries that need balancing, rather than increasing power to all batteries uniformly. The segmented architecture enables precise power allocation that improves balancing capability without unnecessary power consumption.
Solution Approach 2:
The patent changes the voltage parameter locally at specific receiving subbranches through the boost branches rather than increasing the overall output voltage. The boost branches can increase voltage and power only in the specific subbranches where batteries require additional energy, maintaining stable overall output power while achieving improved balancing capability through localized parameter adjustment.
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
The solution enhances energy balancing capability while keeping circuit losses stable, improving energy distribution among batteries without increasing output voltage, thereby extending battery pack life.
Implementation Method 1
Each of the at least one receiving coil is coupled to the sending coil in an electromagnetic induction manner
Data Source
AI summary
Example energy balancing circuits and energy balancing apparatus are described. One example energy balancing circuit includes a coupling branch and a receiving branch. The coupling branch includes one sending coil and at least one receiving coil. Each receiving coil is coupled to the sending coil in an electromagnetic induction manner. The receiving branch includes at least one receiving subbranch. Each receiving coil is uniquely connected to one receiving subbranch. Each receiving subbranch includes a rectifier branch. A first receiving subbranch in the at least one receiving subbranch further includes a first boost branch connected to both a first rectifier branch and a first receiving coil. The first receiving coil is a receiving coil connected to the first receiving subbranch.