Dual-Battery Power Supply for High-Load Pulse Discharge
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Solution Overview
Problem
Existing power supply systems for portable communication devices face challenges in providing high volume energy density and supporting frequent, high-load communication scenarios, as they often struggle with limited discharge capacity and output current under high loads.
Innovation Solution
A power supply apparatus comprising a primary battery and a secondary battery coupled in parallel, where the secondary battery is constantly charged by the primary battery, allowing for higher output current and extended pulse discharging capabilities without the need for additional control circuits, thereby increasing volume energy density and enabling more frequent high-load discharges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single battery is used in the power supply apparatus, then the device complexity is low, but the volume energy density and pulse discharging capability are insufficient
Solution Approach 1:
The power supply apparatus is segmented into two distinct battery units: a primary battery and a secondary battery. Each battery serves a specific function - the primary battery provides initial charging power, while the secondary battery handles pulse discharging. This segmentation allows the system to achieve high volume energy density and excellent pulse discharging capability without requiring complex control circuits, as the batteries operate in a naturally coordinated manner based on their inherent electrical characteristics.
2Ease of manufacture
If a single battery is used, then the manufacturing cost is low, but the output current under high load is insufficient
Solution Approach 1:
The patent merges two different battery types (primary and secondary batteries) into a single power supply apparatus. The primary battery, with its high energy density, provides sustained power, while the secondary battery, with its low internal resistance, delivers high output current under high load conditions. This combination achieves superior power delivery capability without significantly increasing manufacturing complexity, as the batteries are connected in parallel with simple wiring.
3Duration of action of moving object
If a larger battery is used to increase discharge capacity, then the energy storage increases, but the pulse discharging capability and volume energy density decrease
Solution Approach 1:
The patent applies local quality by assigning different functional characteristics to different battery components. The primary battery is optimized for energy storage with high discharge capacity, while the secondary battery is optimized for power delivery with low internal resistance suitable for pulse discharging. This localized optimization allows the system to simultaneously achieve large discharge capacity and excellent pulse discharging capability, with the secondary battery's capacity being 5-50% of the primary battery's capacity for optimal performance.
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
This configuration enables the power supply apparatus to provide electric power for a longer period and perform pulse discharging a greater number of times, supporting high-output currents during instantaneous peaks without the need for external charging or complex control circuits, thus enhancing the energy density and operational duration of portable communication devices.
Implementation Method 1
The secondary battery is coupled in parallel with the primary battery... makes it possible to charge the secondary battery by the primary battery having the discharge capacity larger than that of the secondary battery
Data Source
AI summary
A power supply apparatus includes a primary battery, a secondary battery, and an output terminal. The secondary battery is coupled in parallel with the primary battery. The output terminal outputs electric power from the secondary battery to an outside. A discharge capacity of the primary battery is larger than a discharge capacity of the secondary battery.