Battery Equalization Power Branch Circuit for Off-Gear Balancing
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Solution Overview
Problem
Existing battery equalization systems have low equalization efficiency and long equalization times, which affects the consistency of battery cells and reduces the overall capacity and lifespan of electric vehicle batteries.
Innovation Solution
A battery equalization system that includes a collection circuit to gather cell parameter information, an equalization circuit to perform equalization processing, and a controller to manage the equalization process. The system also features a power supply branch circuit that connects to a power supply unit when the vehicle is in OFF gear, ensuring continuous power for equalization processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the vehicle is in OFF gear, then power consumption is reduced, but equalization processing cannot be performed
Solution Approach 1:
The power supply system is segmented into two independent branches: a first power supply branch circuit for general vehicle loads and a second power supply branch circuit dedicated to the battery equalization system. This segmentation allows the equalization system to operate independently from the main vehicle power system, enabling equalization processing even when the vehicle is in OFF gear, while maintaining overall power consumption efficiency.
2Productivity
If equalization processing is performed continuously, then equalization efficiency is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the connection state of the second power supply branch circuit based on vehicle operating conditions and equalization needs. The controller monitors battery cell voltage differences and automatically activates or deactivates the equalization circuit, enabling continuous equalization when needed while reducing power consumption during normal operation. This dynamic control resolves the contradiction between maintaining high equalization efficiency and managing power consumption.
Data Source
AI summary
A battery equalization system, a vehicle, a battery equalization method, and a storage medium. The battery equalization system includes: a collection circuit; and equalization circuit; a controller, connected to the collection circuit and the equalization circuit; and a power supply branch circuit, controlled by the controller to get connected to a power supply unit and the battery equalization system when a vehicle is in an OFF gear and a cell needs enabling of equalization, so that the power supply unit supplies power to the battery equalization system.