Battery Cell Compression Assembly for Adaptive Pressure Control
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Solution Overview
Problem
Current battery cells, particularly those with solid-state electrolytes, require significant pressure for efficient ion conduction, and their expansion during charge and discharge complicates maintaining consistent pressure.
Innovation Solution
A battery assembly with a transmission system and actuator motor that adjusts the distance between end sections to apply varying pressure to the cells based on their expansion, using rods, gears, and belts to maintain consistent ionic conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large amounts of pressure are applied to solid-state battery cells, then ion conduction efficiency is improved, but device complexity increases due to the need for active pressure adjustment mechanisms
Solution Approach 1:
The patent applies dynamics by making the pressure application mechanism adjustable and adaptive. The battery assembly includes an actuator that can dynamically change the distance between end sections, allowing the pressure on battery cells to be adjusted based on their expansion during charge-discharge cycles. This dynamic adjustment maintains optimal ion conduction efficiency while accommodating cell volume changes.
Solution Approach 2:
The patent changes the pressure parameter applied to battery cells based on their state of charge. As battery cells expand during charging and discharging, the system adjusts the compression force accordingly to maintain consistent pressure within an optimal range, ensuring reliable ion conduction through the solid electrolyte throughout the operational cycle.
2Reliability
If pressure is maintained on expanding battery cells, then ion conduction is efficient, but the structure must accommodate volume changes during charge-discharge cycles
Solution Approach 1:
The system dynamically adjusts the distance between end sections to accommodate battery cell expansion during charge-discharge cycles. The actuator mechanism allows the structure to adapt its volume while maintaining appropriate pressure, ensuring both ionic conductivity and adaptability to cell volume changes.
Solution Approach 2:
The system changes the positional parameter of end sections in response to battery cell expansion. By adjusting the distance between end sections based on cell volume changes, the system maintains optimal pressure for ionic conductivity while adapting to the varying dimensions of the battery cells during operation.
3Reliability
If the distance between end sections is varied to maintain pressure, then consistent ionic conductivity is achieved, but the transmission system complexity increases
Solution Approach 1:
The transmission system enables dynamic variation of the distance between end sections through mechanical components. The actuator connects to the end sections via a transmission mechanism that converts rotational motion into linear displacement, allowing precise control over the compression force applied to battery cells while maintaining pressure consistency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system actively adjusts pressure to accommodate cell expansion, ensuring consistent pressure and efficient ion conduction throughout charging and discharging cycles.
Implementation Method 1
an actuator motor configured for driving the transmission system to vary a distance between the first end section and the second end section
Implementation Method 2
the rods are screws, and the actuator motor is configured for rotating the gears to drive the screws to impact a force applied by the first end section and the second end section
Implementation Method 3
a solid-state electrolyte sandwiched between the anode material and the cathode material for transporting ions between the anode material and the cathode material
Data Source
AI summary
A battery assembly includes a first end section and a second end section; a plurality of battery cells stacked between the first end section and the second end section; a transmission system connecting the first end section and the second end section together; and an actuator motor configured for driving the transmission system to vary a distance between the first end section and the second end section to impact a pressure applied by the first end section and the second end section to the plurality of the battery cells.