BMS Driver Circuit With Current Amplification for Reliable Charge Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing Battery Management Systems (BMS) suffer from poor charging and discharging management reliability, poor anti-interference capability, and complex circuit structures with high hardware costs.
Innovation Solution
A circuit for BMS utilizing a processing chip to control an auxiliary driver for current amplification and a charging driver for rapid charging, and a discharging driver for rapid discharging, with a simplified circuit structure and reduced hardware costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional BMS circuit structure is used, then charging and discharging management can be implemented, but the circuit structure becomes complex and hardware cost increases
Solution Approach 1:
The patent combines multiple driver functions (charging driver, discharging driver, auxiliary driver) into a unified circuit architecture controlled by a single processing chip. The charging driver and discharging driver share common circuit paths and control logic, merging previously separate functions into an integrated system that reduces overall circuit complexity while maintaining reliable charging and discharging management.
Solution Approach 2:
The processing chip serves multiple functions by controlling both charging and discharging operations through a single device. The auxiliary driver also performs multiple roles by providing current amplification for charging operations and participating in voltage balancing functions. This multi-functionality reduces the need for separate dedicated circuits, simplifying the overall system while maintaining management reliability.
2Reliability
If traditional BMS circuit structure is used, then battery management functions are provided, but hardware cost increases
Solution Approach 1:
By merging the charging and discharging management functions into a unified circuit structure with shared components, the patent reduces the total number of hardware elements required. The common circuit paths and integrated control logic decrease component count and assembly complexity, leading to lower manufacturing costs while maintaining reliable battery management functions.
Solution Approach 2:
The processing chip and auxiliary driver perform multiple functions within the system, reducing the need for separate dedicated hardware for each function. This multi-functionality decreases the overall hardware footprint and component requirements, thereby reducing manufacturing costs while ensuring reliable charging and discharging management.
3Productivity
If current amplification is implemented for rapid charging, then charging speed increases, but circuit complexity increases
Solution Approach 1:
The auxiliary driver serves as an intermediary component that provides current amplification between the processing chip and the charging driver. This intermediary device enables rapid charging by amplifying the control signals from the processing chip, allowing the charging driver to deliver higher currents without requiring the processing chip itself to handle high power, thus maintaining circuit simplicity while achieving fast charging.
4Reliability
If anti-interference capability is improved, then system reliability increases, but circuit structure becomes more complex
Solution Approach 1:
The patent implements anti-interference measures within the integrated circuit architecture by combining noise filtering and protection functions into the existing driver circuits. The charging driver and discharging driver incorporate built-in protection mechanisms that operate within the same circuit paths, providing anti-interference capability without requiring separate dedicated protection circuits, thus maintaining system reliability while avoiding additional complexity.
Data Source
AI summary
A circuit for battery management system (BMS) and a battery system are disclosed. The circuit includes: a processing chip configured for controlling the auxiliary driver to amplify a driving current in response to the battery pack requiring being charged; a charging driver configured for conducting a charging path between the battery connection interface and the external connection interface to charge the battery pack, under driving of the amplified driving current; the processing chip is further configured for controlling the discharging driver to conduct a discharging path between the battery connection interface and the external connection interface, in response to the battery pack requiring being discharged.