Battery Management System Activation Signal Segmentation
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Solution Overview
Problem
The CAN communication standard in storage battery management systems can lead to confusion and increased time in identifying individual battery modules, especially when multiple devices are connected to the same CAN-BUS, resulting in delayed device availability and reduced convenience.
Innovation Solution
A storage battery management system that includes an activation signal generation unit to generate distinct activation signals for each storage battery, allowing the management unit to associate identification information with each battery, thereby ensuring correct identification and reducing the time required for device readiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same identification information is given to multiple devices on the same CAN-BUS, then the identification process becomes simpler, but confusion occurs and correct identification cannot be achieved
Solution Approach 1:
The identification information is segmented into two parts: common identification information (shared by all batteries) and individual identification information (unique to each battery). This segmentation allows the system to use simple common identifiers while maintaining unique differentiation through individual identifiers, resolving the contradiction between simplicity and accuracy.
Solution Approach 2:
Different parts of the identification system serve different functions: common identification information provides general category identification, while individual identification information provides specific battery differentiation. This local quality approach allows each part to optimize for its specific purpose while working together for overall identification accuracy.
2Reliability
If sequential transmission of identification information is performed, then individual battery identification is achieved, but the time until device availability is delayed
Solution Approach 1:
Common identification information is transmitted and processed in advance before individual identification information. This preliminary action allows the control unit to prepare basic battery recognition upfront, then quickly add individual identification details, reducing the overall time compared to waiting for complete sequential identification.
Solution Approach 2:
The system merges common identification information transmission with individual identification information transmission into a coordinated process. Rather than strictly sequential operations, the merged approach allows overlapping processing phases, reducing total identification time while maintaining accuracy.
3Adaptability or versatility
If multiple management units are connected to the same CAN-BUS, then system integration is improved, but signal confusion occurs and process identification fails
Solution Approach 1:
Identification signals are segmented into common components (shared across all management units) and individual components (unique to each management unit). This segmentation allows multiple units to operate on the same CAN-BUS without confusion, as each unit can distinguish its own signals from others through the individual identification portion.
Solution Approach 2:
The common identification information acts as an intermediary layer between individual batteries and the control unit. It provides a shared communication framework that enables multiple management units to coexist on the same bus while the individual identification information mediates specific battery recognition, preventing signal confusion.
Data Source
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AI summary
A storage battery management system manages a state of a storage battery that is detachably mounted. The storage battery management system includes an activation signal generation unit configured to generate an activation signal for setting the mounted storage battery to an available state, a management unit configured to manage the storage battery that has received the activation signal and identification information of the storage battery in association with each other, an activation signal transmission line configured to electrically connect a storage battery management unit of the storage battery and the activation signal processing unit with each other, and a signal transmission line configured to electrically connect the storage battery management unit and the management unit to each other.