Shared Power Supply Bidirectional Battery Maintenance System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current battery pack maintenance methods, especially two-way maintenance systems, are inefficient and costly due to the need for independent power supplies and continuous energy balancing, which can lead to excessive energy waste and reduced battery life.
Innovation Solution
An isolating two-way constant-current maintenance system utilizing a shared power supply with a power supply, electronic switch, current sensor, main and secondary battery management system controllers, and maintenance circuits, including PWM controllers and field effect tubes, allows for simultaneous charging and discharging of battery cells, optimizing energy utilization and extending battery life without continuous power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a two-way maintenance power supply is used to charge low-capacity battery cells and discharge high-capacity battery cells, then maintenance efficiency is improved and energy transfer is achieved, but device complexity increases and additional transfer power supply is needed
Solution Approach 1:
The patent combines the maintenance power supply and transfer power supply functions into a single integrated device. The power supply can operate in different modes (maintenance mode and transfer mode) by switching its connection configuration, eliminating the need for separate independent power supply units and reducing overall system complexity while maintaining high maintenance efficiency
Solution Approach 2:
The power supply device is designed with multi-functionality, serving both as a maintenance power supply for charging/discharging battery cells and as a transfer power supply for energy transfer between cells. This universal design allows one device to perform multiple functions that previously required separate specialized equipment
2Reliability
If an independent equipment power supply is used for maintenance operations, then reliable power is provided, but cost increases and continuous power consumption occurs
Solution Approach 1:
The maintenance system operates periodically rather than continuously. The power supply is activated only when maintenance operations are required (charging or discharging specific battery cells) and remains inactive otherwise, converting continuous power consumption into periodic operation while maintaining reliability when needed
Solution Approach 2:
The system uses the battery cells themselves as the power source for maintenance operations. High-capacity cells discharge to charge low-capacity cells, creating a self-sufficient energy balancing system that does not require continuous external power supply, thereby reducing energy loss while maintaining operational reliability
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 system effectively maintains battery consistency, enhances energy utilization, and prolongs battery life by reducing costs and eliminating the need for continuous power supplies, while maintaining high efficiency and independence from external power sources.
Implementation Method 1
a main coil and a secondary coil of the transformer T are respectively connected with one end of the filter capacitor LL1 and a drain electrode of the field effect tube Q1; a source electrode of the field effect tube Q1 is connected with the other end of the filter capacitor LL1
Implementation Method 2
two terminals, c, d, of a secondary coil of the transformer T are respectively connected with one end of the filter capacitor LL2 and a drain electrode of the field effect tube Q2; a source electrode of the field effect tube Q2 is connected with the other end of the filter capacitor LL2
Data Source
AI summary
The present invention relates to an isolating two-way constant-current maintenance system based on a power supply of shared equipment, comprising a power supply, an electronic switch K1, a current sensor, a main battery management system controller, and a plurality of secondary battery management system controllers; wherein the power supply is connected with the current sensor; the current sensor is respectively connected with the electronic switch K1 and the main battery management system controller; the electronic switch is respectively connected with the main battery management system controller and the secondary battery management system controllers; the main battery management system controller is respectively in a communication connection with the plurality of secondary battery management system controllers; and each one of the secondary battery management system controllers is connected with a battery pack. The isolating two-way constant-current maintenance system based on a power supply of shared equipment has the advantages of small size, low cost, high power conversion efficiency, two-way and constant maintenance, and low requirements on the power supply. The system can quickly enhance the utilization rate of the battery and effectively prolong the service life of the battery pack.