Battery Module Daisy-Chain Clock Pulse Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery systems with daisy chain configurations face complications in data communication due to dot-to-dot transmission, leading to increased power consumption and design complexity.
Innovation Solution
Implementing a master-slave type serial communication protocol, such as I2C, with a predetermined number of clock pulses and inserted clock pulses to compensate for clock differences in the daisy chain, enabling synchronous data communication between battery modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dot-to-dot transmission is used for data communication among battery modules in daisy chain configuration, then data communication can be achieved, but design complexity increases and power consumption increases
Solution Approach 1:
The patent merges the communication functions of multiple battery modules into a unified daisy-chain architecture where adjacent modules share communication pathways. The communication circuit in each module is designed to simultaneously handle upstream and downstream communication, reducing overall system complexity while maintaining reliable data transmission across all modules.
Solution Approach 2:
The communication system is segmented into distinct operational modes (top mode, middle mode, bottom mode) for different module positions in the daisy chain. Each mode has optimized communication protocols and clock pulse configurations, allowing the system to reduce power consumption and simplify design by applying appropriate communication strategies to specific segments of the battery system.
2Reliability
If dot-to-dot transmission is used for data communication among battery modules in daisy chain configuration, then data communication can be achieved, but power consumption increases
Solution Approach 1:
The communication system dynamically adjusts its operation based on the module's position in the daisy chain. Modules in different positions (top, middle, bottom) activate different communication modes that optimize power consumption. The clock pulse generation is dynamically controlled to insert pulses only where needed to compensate for clock differences, rather than continuously generating pulses in all modules.
Solution Approach 2:
Different communication strategies are applied to different locations in the daisy chain. The top module, middle modules, and bottom module each have tailored communication configurations that match their specific positional requirements. This localized optimization reduces overall power consumption by avoiding unnecessary communication operations in modules where they are not needed.
3Measurement precision
If synchronous data communication with inserted clock pulses is implemented, then clock difference compensation is achieved, but communication protocol complexity increases
Solution Approach 1:
The system performs preliminary clock synchronization by inserting clock pulses at predetermined locations in the communication protocol. This preliminary action compensates for clock differences before actual data transmission begins, ensuring synchronization is established in advance. The clock pulse insertion patterns are pre-configured for different module positions, simplifying the real-time communication process.
Solution Approach 2:
Clock pulses serve as an intermediary mechanism that mediates between modules with different clock timings. By inserting these intermediary clock signals at specific points in the communication sequence, the system bridges the timing gaps between modules without requiring complex real-time synchronization algorithms, thus reducing protocol complexity while maintaining precision.
Data Source
AI summary
A battery module for use in a battery system is coupled with other battery modules in the battery system in a daisy-chain configuration. And, the battery module communicates with the other battery modules through a daisy chain according to a communication interface protocol which has a predetermined number of clock pulses. The battery module includes a battery unit and a battery control circuit. When the battery module operates in a bottom mode, the battery control circuit generates an upstream clock output signal which includes the predetermined number of clock pulses plus a number of inserted clock pulses, to compensate a clock difference caused by a propagation delay of the daisy chain, such that the battery module is able to synchronously receive a downstream data signal transmitted from a target module via the daisy chain as the battery module is transmitting an upstream clock output signal.