Solid State Switch Battery Management System Integration
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Solution Overview
Problem
Current battery systems face challenges in dynamically managing power output and charging operations to meet varying consumer demands, requiring steady information exchange between the battery system and controllers, which is not adequately satisfied by static control methods.
Innovation Solution
A battery system incorporating a solid state switch (SSS) and a battery management system (BMS) that shares a gate driver and shunt circuit, utilizing anti-serially interconnected field-effect transistors (FETs) for control, along with a current measurement circuit and serial communication interface to manage power and communication effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static control methods are used for battery power output and charging operations, then the control system is simple, but it cannot satisfy dynamic power demands of various consumers
Solution Approach 1:
The patent combines the solid state switch control functions with the battery management system into a single integrated controller. The gate driver, shunt circuit, and control logic are merged into one unit that can simultaneously manage both the SSS switching operations and battery charging/discharging cycles, enabling dynamic power management without proportionally increasing system complexity
Solution Approach 2:
The controller is designed with multi-functionality to handle diverse power management tasks including SSS control, battery charging, discharging, and communication with external consumers. This universal controller can adapt to different power demands and consumer requirements, providing dynamic responsiveness across various operating conditions
2Reliability
If separate control systems are used for SSS and BMS, then each system can be optimized independently, but the overall system complexity and cost increase
Solution Approach 1:
The patent merges the SSS control functions and BMS functions into a single integrated controller, reducing the number of separate control systems from two to one. This integration maintains reliability by ensuring coordinated operation between power switching and battery management while reducing system complexity and interconnection requirements
3Manufacturing precision
If multiple separate components are used for control and measurement, then each component can be optimized for its specific function, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent combines multiple control and measurement functions including gate driver, shunt circuit, and control logic into a single integrated controller. This reduces the total number of discrete components that need to be manufactured and assembled, lowering manufacturing costs while maintaining the specialized functionality needed for precise control and measurement
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
This configuration enables efficient control of the SSS and BMS, providing dynamic power management and reducing manufacturing costs by sharing components, thus improving the battery system's ability to meet dynamic power demands and communicate effectively with controllers.
Implementation Method 1
The SSS may include at least one field-effect transistor FET
Data Source
AI summary
A battery system includes a solid state switch (SSS), and a battery management system (BMS) including a gate driver and a shunt circuit. The SSS and the BMS share at least one module that is used for both the SSS and the BMS. The at least one module includes at least one of the gate driver and the shunt circuit.