Integrated Battery Pack with Protective Circuit Module
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Solution Overview
Problem
Existing battery packs for e-bikes and electric vehicles require additional controller systems for motor control, which increases complexity and cost, and lack integrated solutions for efficient power management and motor operation.
Innovation Solution
A battery pack design that incorporates a protective circuit module with a battery management system, inverter, gate driver, and output terminal on a single printed circuit board, eliminating the need for external controllers by integrating motor control functions and including a charge/discharge terminal for efficient power management and motor operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional controller systems are used for motor control, then motor control functionality is achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines the battery management system and motor control functions into a single protective circuit module. The controller includes both a battery management unit for managing battery cells and a motor control unit for controlling motor operation, eliminating the need for separate controller systems and reducing overall system complexity while maintaining full functionality
Solution Approach 2:
The protective circuit module is designed to perform multiple functions: it manages battery charging/discharging operations, monitors battery cell voltages and temperatures, controls motor operation through the inverter, and provides protection functions. This multi-functional integration reduces the number of separate components needed in the system
2Adaptability or versatility
If additional controller systems are used for motor control, then motor control functionality is achieved, but cost increases
Solution Approach 1:
The patent combines the battery management system and motor control functions into a single protective circuit module. The controller includes both a battery management unit for managing battery cells and a motor control unit for controlling motor operation, eliminating the need for separate controller systems and reducing overall system complexity while maintaining full functionality
Solution Approach 2:
The protective circuit module is designed to perform multiple functions: it manages battery charging/discharging operations, monitors battery cell voltages and temperatures, controls motor operation through the inverter, and provides protection functions. This multi-functional integration reduces the number of separate components needed in the system
3Object-affected harmful factors
If battery management system and inverter are spaced apart, then heat interference is reduced, but device complexity increases
Solution Approach 1:
The protective circuit module is divided into distinct functional units: a battery management unit and a motor control unit. The battery management unit includes voltage detection circuits for each battery cell, while the motor control unit includes the inverter. These units are spatially separated on the controller board, with the inverter positioned away from the battery management circuits, reducing heat interference while maintaining functional integration within the same module
Data Source
AI summary
A battery pack including at least one battery cell, a protective circuit module on a side of the at least one battery cell, and a case including the protective circuit module and the at least one battery cell. The protective circuit module includes a battery management system, an inverter, and an output terminal to supply power for driving a motor.