Battery Power Delivery Controller Bypass Path
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Solution Overview
Problem
Conventional power delivery systems for batteries face inefficiencies in fast charging due to high power consumption and heat generation, leading to reduced battery lifespan and increased costs, primarily because they require large, expensive inductors and switches to handle high currents and voltages.
Innovation Solution
A power delivery system that includes a controller to determine whether a first or second adapter is connected, enabling a bypass path for direct power delivery from the first adapter or a conversion circuit to convert power from the second adapter, optimizing power delivery and reducing the need for high-capacity components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional power conversion circuit is used to deliver high power to charge the battery quickly, then the charging speed is improved, but the power consumption of the circuit increases and heat generation deteriorates battery lifespan
Solution Approach 1:
The system segments the power delivery path into two separate paths: a bypass path for direct power delivery and a conversion circuit path for power conversion. The controller selectively activates one path based on charging requirements, allowing high-power fast charging through the bypass path without the energy losses associated with conventional conversion circuits.
Solution Approach 2:
The bypass path acts as an intermediary mechanism that enables direct power delivery from the power source to the battery, circumventing the need for power conversion when high power is required. This intermediary path eliminates the energy losses that would otherwise occur in the conversion circuit.
2Power
If a power conversion circuit with large inductor and switches is used to handle high current, then the power delivery capability is improved, but the device size and cost increase
Solution Approach 1:
The system divides the power delivery function into two separate systems: a bypass path with minimal components for high-power delivery and a conversion circuit with standard components for lower-power operation. This segmentation allows the bypass path to use small components while still achieving high power delivery capability when needed.
Solution Approach 2:
The bypass path and conversion circuit work together as a universal power delivery system that can handle both high-power and low-power scenarios. The bypass path provides high-power capability without requiring large components, while the conversion circuit handles standard power levels, creating a multi-functional system that achieves high power delivery without proportionally increasing component size.
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 approach reduces power consumption and heat generation, extends battery lifespan, and minimizes the size and cost of the power conversion circuit by allowing efficient charging with either a bypass path or a low-power conversion process, depending on the adapter connected.
Implementation Method 1
the conversion circuit converts input power received at the interface to output power to charge the battery
Implementation Method 2
the bypass path delivers power from the interface to charge the battery
Data Source
AI summary
A controller for controlling power delivery to a battery includes a first terminal that provides a first signal to enable a bypass path to deliver power from an interface to charge the battery, and includes a second terminal that provides a second signal to enable a conversion circuit to convert input power received at the interface to output power to charge the battery. The controller also includes circuitry that determines whether a first adapter or a second adapter is connected to the interface, generates the second signal if the second adapter is connected to the interface, generates the first signal and a request if the first adapter is connected to the interface, and provides the request to the first adapter through the interface. The request includes information indicative of a target level and an instruction that causes the first adapter to provide power at the target level to the interface.