动力电池系统、电动汽车及动力电池系统控制方法
By using switching modules and voltage balancing modules in the electric vehicle power battery system, the power demand of low-voltage load during high-voltage charging and the short-circuit risk during parallel discharge of battery packs are solved, thus achieving safe and reliable battery system operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGZHOU GREATER BAY TECH CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing electric vehicle power battery systems cannot simultaneously meet the power demand of low-voltage architecture loads during high-voltage charging. The voltage difference between multiple battery packs during parallel discharge can lead to short-circuit risks, posing safety hazards.
The system employs a switching module and a voltage balancing module. The control module switches the circuit connections during the series and parallel connection of the battery packs, while the voltage balancing module balances the voltage difference between the battery packs during parallel discharge, thus preventing short circuits.
It enables the battery system to meet the power demand of low-voltage loads during high-voltage charging, improves the safety of the battery system during parallel discharge, avoids short circuits between battery packs, and extends the service life of the battery packs.
Smart Images
Figure CN120422719B_ABST