Battery Voltage Conversion Control for Stable Output and Capacity Use
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Solution Overview
Problem
Existing battery systems suffer from short life and waste of capacity due to environmental temperature variations affecting discharge capacity, limiting high power output and long-term endurance.
Innovation Solution
A control system and method that includes a battery, charging chip, voltage conversion module, and power supply management module, which adjusts operating modes based on battery voltage to maintain stable output voltage, using boost or pass-through modes to optimize battery capacity utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the battery discharging cutoff voltage is set to 3.5V to ensure stable voltage output, then the voltage stability is improved, but the battery capacity utilization decreases significantly (from 74% at 25°C to 20% at -20°C)
Solution Approach 1:
The patent implements dynamic adjustment of the discharging cutoff voltage based on environmental temperature. The power supply management module dynamically changes the cutoff voltage threshold according to detected temperature conditions, allowing the system to maintain voltage stability while adapting to environmental variations and maximizing battery capacity utilization across different temperature ranges.
Solution Approach 2:
The patent changes the electrical parameter (cutoff voltage) based on environmental conditions. By adjusting the discharging cutoff voltage parameter according to temperature, the system resolves the contradiction between maintaining stable voltage output and maximizing battery capacity utilization under varying environmental conditions.
2Quantity of substance
If the discharging cutoff voltage is lowered to 3V to maximize battery capacity utilization, then the battery capacity utilization is improved, but the voltage stability and reliability of power supply deteriorates
Solution Approach 1:
The patent dynamically adjusts the discharging cutoff voltage parameter based on environmental temperature rather than using a fixed low threshold. This allows the system to maximize battery capacity utilization while maintaining power supply reliability by adapting the voltage threshold to appropriate levels for each environmental condition.
Solution Approach 2:
The power supply management module implements feedback control by detecting environmental temperature and adjusting the discharging cutoff voltage accordingly. This feedback mechanism ensures that the system maintains reliable power supply while maximizing battery capacity utilization across different operating conditions.
3Device complexity
If a fixed discharging cutoff voltage is used to simplify the control system, then the device complexity is reduced, but the adaptability to environmental changes and productivity decrease
Solution Approach 1:
The patent implements dynamic voltage threshold adjustment based on environmental temperature, enabling the control system to adapt to different environmental conditions. This dynamic approach improves environmental adaptability and productivity while maintaining relatively simple control logic through temperature-based decision rules.
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
Ensures stable voltage input to the power supply management module, maximizing battery capacity and extending device endurance by adapting to environmental conditions.
Implementation Method 1
the voltage conversion module is configured to receive the battery voltage, determine an operating mode on the basis of the battery voltage, acquire an output voltage corresponding to the operating mode
Data Source
AI summary
A control system and method for improving battery output energy efficiency, and an electronic device are provided. The control system includes: a battery, a charging chip, a voltage conversion module, and a power supply management module. The battery is configured to send, when the control system is not connected to an external power supply, battery voltage to the voltage conversion module by means of the charging chip. The voltage conversion module is configured to receive the battery voltage, determine an operating mode on the basis of the battery voltage, acquire an output voltage corresponding to the operating mode, and output the output voltage to the power supply management module. The power supply management module is configured to convert and output at least one system voltage on the basis of the output voltage, and the at least one system voltage is configured to supply power to a powered system.