Parallel Battery Power Supply With Ideal Diode Discharge Control
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Solution Overview
Problem
Power sources with multiple batteries face challenges in regulating power supply to meet the increasing energy demands of electronic components, requiring efficient discharge and voltage management to prevent overcharging and ensure safe operation.
Innovation Solution
A power source system comprising multiple battery units connected in parallel, each with an ideal diode, current limiting load switch, and charger, controlled by a controller that dynamically adjusts current limits and enables/disables components based on state of charge and system voltage to maximize energy extraction and prevent over-discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple battery units are connected in parallel to increase power capacity, then the energy requirements of electronic components are met, but voltage regulation and discharge management become more complex
Solution Approach 1:
An ideal diode is introduced as an intermediary component between each battery unit and the load. This diode automatically prevents reverse current flow and isolates discharged batteries, simplifying the management of multiple battery units without requiring complex active control circuits for each battery.
Solution Approach 2:
The system uses the inherent properties of ideal diodes to automatically manage battery discharge patterns. The diodes self-regulate current flow based on voltage potentials, eliminating the need for external control mechanisms and reducing overall system complexity while maintaining safe operation.
2Reliability
If current limit switches are used to prevent over-discharge, then battery safety is improved, but power delivery flexibility is reduced
Solution Approach 1:
The current limit switches are configured to dynamically respond to battery voltage conditions rather than imposing fixed current limits. As batteries discharge and voltage drops, the ideal diodes automatically adjust current distribution, allowing the system to adapt power delivery to real-time battery states while maintaining safety constraints.
3Loss of energy
If batteries are discharged to maximize energy extraction, then power efficiency is improved, but risk of over-discharge and damage increases
Solution Approach 1:
The ideal diodes are positioned to preemptively block reverse current flow before it can cause harmful effects. By establishing this protective mechanism in advance, the system prevents over-discharge conditions from developing, allowing batteries to be discharged接近 their full capacity without risking damage from reverse charging or excessive discharge.
Data Source
AI summary
Disclosed herein are regulated power supplies. The power source delivers power to a system load and includes battery units. The power source also includes power flow devices coupled to the battery units that are configured to provide power from the battery units to the system load. Each power flow device corresponds to a respective one of the battery units and includes a one direction current flow device connected in series with a current regulator between the respective battery unit and the system load.