Battery Pack Cell Memory Integration for Disassembly Data Retention
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Solution Overview
Problem
Conventional battery packs face issues in accurately associating deterioration information with individual battery cells after the pack is disassembled, as the memory records for each cell become disconnected.
Innovation Solution
Integrating a memory with each battery cell to record and manage deterioration information, including charge/discharge cycles, voltage history, current history, internal resistance, and temperature, with detecting and calculating sections to ensure accurate data recording and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single memory is disposed in the battery pack to record deterioration information for all battery cells, then the device complexity is reduced, but the ability to correctly associate deterioration information with individual battery cells after disassembly is lost
Solution Approach 1:
The patent divides the memory system into multiple independent memories, with each memory being disposed in or associated with a specific battery cell. This segmentation ensures that deterioration information for each battery cell is stored in its corresponding memory, maintaining the association even when the battery pack is disassembled. The detecting section is also segmented to detect parameters for individual battery cells separately.
Solution Approach 2:
The patent implements a hierarchical structure where individual battery cell memories are nested within the overall battery pack system. Each battery cell contains or is associated with its own memory unit, which is then integrated into the larger battery pack architecture. This nested arrangement allows independent access to individual cell information while maintaining system-level coordination through the control section.
2Manufacturing precision
If deterioration information is recorded centrally in the battery pack, then manufacturing precision requirements are reduced, but reliability of data association after disassembly deteriorates
Solution Approach 1:
By assigning dedicated memories to individual battery cells, the system eliminates the need for precise central placement of a single memory unit. Each memory is locally associated with its corresponding battery cell, reducing manufacturing complexity while ensuring reliable data association. The detecting section similarly detects parameters for each cell independently, further distributing the precision requirements.
3Loss of information
If individual memories are integrated with each battery cell, then the ability to track and manage deterioration information for each cell is improved, but the device complexity increases
Solution Approach 1:
The patent employs a standardized memory and detecting section design that can be universally applied to each battery cell. Rather than creating unique complex systems for each cell, the same multi-functional detecting section and memory structure are replicated across all cells. This universal approach enables individual tracking while maintaining system-level simplicity through standardization.
Solution Approach 2:
The detecting section is designed to simultaneously detect multiple parameters (temperature, voltage, current) for individual battery cells, merging multiple detection functions into a single integrated component. The memory units also combine storage of various deterioration parameters in one location, reducing the need for multiple separate components and simplifying the overall system architecture.
Data Source
AI summary
Provided is a battery pack comprising a plurality of batteries; and a plurality of memories that correspond respectively to the batteries and that each record deterioration information of the corresponding battery. Each set of a battery and a corresponding memory may be formed integrally as a battery cell. As a result, the deterioration information of each battery cell can be known even after the battery pack is disassembled.