Interleaved Battery Discharge for High Power VR Headsets
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Solution Overview
Problem
Current battery packs in portable multimedia electronic devices, such as untethered virtual reality kits, are limited by power regulations to less than 100 Wh, which is insufficient for devices requiring more than 100 W to operate effectively for a reasonable duration, especially when rendering high-definition 3D graphics.
Innovation Solution
A battery-powered system with interleaved discharge of multiple batteries, utilizing switch circuitry and a voltage regulation circuit to aggregate power from multiple batteries, allowing for staggered or simultaneous discharge based on state-of-charge estimation and policy management settings, enabling higher power output than a single battery pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single battery pack is used to power portable multimedia electronic devices, then the device meets power regulations (less than 100 Wh), but the power output is insufficient for devices requiring more than 100 W to operate effectively
Solution Approach 1:
The system divides the power source into multiple separate battery packs instead of using a single large battery. Each battery pack operates independently and can be selectively coupled to the voltage regulation circuit, allowing the system to aggregate power from multiple sources while maintaining compliance with individual battery regulations.
Solution Approach 2:
The system merges the power output of multiple battery packs by selectively coupling them to the voltage regulation circuit. The switch circuitry aggregates power from multiple batteries simultaneously or in sequence, providing combined power output that exceeds what a single battery could deliver while maintaining regulatory compliance.
2Power
If multiple batteries are used to provide aggregated power, then the power output increases, but the device complexity increases due to switch circuitry and voltage regulation requirements
Solution Approach 1:
The voltage regulation circuit is designed to accept multiple battery inputs and perform multiple functions: regulating voltage from different battery sources, managing power aggregation, and controlling discharge patterns. This multi-functional design reduces the need for separate dedicated circuits for each battery, thereby managing complexity.
Solution Approach 2:
The switch circuitry dynamically selects and couples batteries to the voltage regulation circuit based on power demands and battery states. This dynamic switching capability allows the system to adapt to varying power requirements without requiring complex permanent connections for all possible battery combinations.
3Power
If batteries are discharged simultaneously, then the power output is maximized, but the discharge rate increases which may reduce battery lifespan and efficiency
Solution Approach 1:
The system implements periodic or alternating discharge patterns where batteries are selectively coupled to the voltage regulation circuit in sequence or in rotating fashion. This periodic switching allows the system to maintain high power output while giving individual batteries rest periods, reducing continuous discharge rates and improving overall energy efficiency and battery lifespan.
Solution Approach 2:
The discharge management system dynamically adjusts which batteries are active and their discharge rates based on real-time battery states, power demands, and efficiency considerations. This dynamic control allows optimization of the balance between power output and energy efficiency, preventing excessive discharge rates that would harm battery health.
Data Source
AI summary
Apparatuses, methods and storage medium associated with a battery powered system with interleaved discharge of batteries are disclosed herein. In embodiments, an apparatus may include one or more processors, devices, and/or circuitry to selectively couple a plurality of batteries to a voltage input node of a voltage regulation circuit to interleave discharge of the plurality of batteries to provide content circuit of a multimedia electronic device with an aggregated power consumed from the plurality of batteries, the aggregated power greater than a power corresponding to one of the batteries. Other embodiments may be described and/or claimed.