Battery Charge Management via Temperature-Controlled Current Adjustment
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Solution Overview
Problem
Current charging management methods for storage batteries, such as constant-current and constant-voltage charging, lead to issues like excessive hydrogen generation, irreversible sulfation, and temperature-related damage, which shorten the battery's service life and capacity.
Innovation Solution
A staged charging method that employs a temperature-control charging mode, adjusting the charging current based on discharge depth and temperature, followed by a constant-voltage mode to prevent pressure buildup and sulfation, and switches to a floating mode for low discharge depths to maintain capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If constant-current charging method is used, then charging speed is improved, but hydrogen generation increases and water is lost
Solution Approach 1:
The patent applies dynamic charging current adjustment by switching between constant-current and constant-voltage modes based on real-time battery state monitoring. The system dynamically reduces charging current when voltage thresholds are reached, preventing excessive hydrogen generation and water loss while maintaining efficient charging speed through adaptive current control.
Solution Approach 2:
The patent changes charging parameters (current and voltage) based on battery state. It transitions from constant-current mode to constant-voltage mode when specific voltage thresholds are reached, and adjusts charging current based on temperature feedback, thereby optimizing the balance between charging speed and water conservation.
2Loss of substance
If constant-voltage charging method is used, then water loss is reduced, but charging speed decreases
Solution Approach 1:
The system dynamically switches between constant-voltage and constant-current modes based on real-time battery voltage and current monitoring. During early charging stages, it uses constant-current mode for fast charging, then transitions to constant-voltage mode when voltage thresholds are reached, thereby maintaining both charging speed and water conservation throughout the charging process.
Solution Approach 2:
The patent implements periodic monitoring and switching between charging modes. It continuously monitors battery voltage and current, periodically evaluates charging state, and switches between constant-current and constant-voltage modes at appropriate intervals, optimizing both charging speed and water loss prevention throughout the charging cycle.
3Productivity
If large charging current is used, then charging efficiency is improved, but lead sulfate detachment and vulcanization occur
Solution Approach 1:
The patent applies dynamic current control by starting with constant-current mode for efficient charging, then automatically transitioning to constant-voltage mode when voltage thresholds are reached. This dynamic adjustment prevents excessive current that causes lead sulfate detachment while maintaining high charging efficiency during the initial charging phase.
Solution Approach 2:
The system performs preliminary monitoring of battery voltage and current before switching modes. It proactively transitions from constant-current to constant-voltage mode when approaching critical voltage levels, preventing lead sulfate detachment and vulcanization before they occur, thereby preserving battery capacity and reliability.
4Productivity
If charging is performed without temperature control, then charging speed is maintained, but battery temperature rises and service life shortens
Solution Approach 1:
The patent implements temperature feedback control by continuously monitoring battery temperature during charging. When temperature exceeds predefined thresholds, the system automatically reduces charging current or switches to constant-voltage mode, preventing thermal damage while maintaining efficient charging speeds during normal operating conditions.
Solution Approach 2:
The system changes charging parameters based on temperature feedback. It adjusts charging current magnitude and mode selection (constant-current vs. constant-voltage) according to real-time temperature measurements, thereby maintaining optimal charging speed while preventing temperature-related degradation and extending battery service life.
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 method prolongs the service life of storage batteries by avoiding excessive current-related issues, reducing water loss, and maintaining stable capacity through controlled charging processes.
Implementation Method 1
adjusting the charging current based on discharge depth and temperature
Implementation Method 2
storage battery needs to be recharged after it is used, to recover its battery capacity
Implementation Method 3
The charging of the storage battery is realized by a switching power supply
Data Source
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AI summary
In order to reasonably adjust charging current of a storage battery according to temperature, realize quick, safe and reliable charging of the storage battery, and effectively prolong the service life of the storage battery, the present invention provides a charging management method and apparatus for a storage battery. The method comprises the following steps: monitoring discharge capacity of a storage battery, and determining discharge depth of the storage battery according to the discharge capacity and total capacity of the storage battery (S102); comparing the discharge depth of the storage battery with a preset battery equalizing charging threshold (S104); and when the discharge depth of the storage battery is greater than or equal to the preset battery equalizing charging threshold capacity, actuating a temperature-control charging mode to charge the storage battery, wherein the temperature-control charging mode is to adjust charging current according to the temperature of the battery (S106).