Solid-State Battery Cell Segmentation for Power Management
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Solution Overview
Problem
The existing portable electronic devices face limitations in increasing battery storage capacity and power management efficiency due to the size constraints of lithium ion all-solid-state batteries, which restricts the degree of freedom in internal design and stability, and results in inefficient power usage.
Innovation Solution
The electronic device incorporates multiple battery cells, including at least one all-solid-state battery cell connected to the power management circuit and another connected to storage, allowing for flexible battery cell arrangement and separate power management to optimize power distribution and reduce cell deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single large battery cell is used to increase storage capacity, then the battery capacity increases, but the degree of freedom in internal design deteriorates
Solution Approach 1:
The battery system is divided into multiple battery cells instead of using a single large battery. This segmentation allows the battery components to be flexibly arranged within the electronic device, improving both storage capacity and design freedom. The multiple cells can be positioned in different locations and configurations to match the device's internal space requirements.
2Quantity of substance
If a single large battery cell is used, then the battery capacity increases, but the stability deteriorates
Solution Approach 1:
Dividing the battery into multiple cells reduces the risk associated with a single large battery. If one cell fails or experiences issues, the other cells can continue to function, providing redundancy and improving overall system stability and reliability.
3Quantity of substance
If a single large battery cell is used, then the battery capacity increases, but the power management efficiency deteriorates
Solution Approach 1:
Multiple battery cells enable more granular power management. The power management circuit can selectively charge or discharge specific cells based on power demands, optimizing energy usage. This segmentation allows for better load distribution and reduced power loss compared to a single large battery cell.
Solution Approach 2:
Different battery cells can be assigned to different functional modules or power consumption levels within the device. This allows tailored power management where high-power components draw from specific cells, improving overall power management efficiency and reducing energy waste.
4Quantity of substance
If a single large battery cell is used, then the battery capacity increases, but the cell deterioration accelerates
Solution Approach 1:
Multiple smaller battery cells experience less stress during charge and discharge cycles compared to a single large cell. This reduces degradation per cell and extends the overall battery system lifespan. Additionally, the power management circuit can rotate usage among cells, further preventing premature deterioration.
Data Source
AI summary
An electronic device includes a storage in which at least one or more programs are stored, a power management circuit, a controller controlling the storage and the power management circuit, a first battery cell connected to the power management circuit, and a second battery cell connected to the storage. At least one of the first battery cell or the second battery cell includes a solid electrolyte.