Dynamic Reference Voltage Battery Charger
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Solution Overview
Problem
Existing battery chargers fail to suitably charge battery assemblies of different types without risking overload due to fixed charging thresholds, which can lead to high temperature issues during charging.
Innovation Solution
A battery charger with a power supply section, a detecting section for temperature-representing voltage, and a comparator that adjusts the reference voltage based on charging voltage, stopping the charge when the temperature-representing voltage reaches or exceeds the reference voltage, thus varying the threshold temperature to prevent overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed charging threshold is used for all battery types, then the charging process is simple to control, but the battery may be overloaded and overheat during charging
Solution Approach 1:
The patent applies the dynamics principle by making the reference voltage dynamic rather than fixed. The reference voltage is adjusted based on the charging voltage according to a predetermined relationship, allowing the temperature threshold to adapt to different charging conditions and battery types, thus preventing overload while maintaining safe charging control
Solution Approach 2:
The patent changes the parameter of reference voltage based on charging voltage. By varying the reference voltage according to the charging voltage level, the system adapts the temperature threshold to match different charging scenarios, ensuring battery safety without complicating the control mechanism
2Reliability
If the charging threshold is adjusted dynamically based on charging voltage, then battery safety is improved, but the control system becomes more complex
Solution Approach 1:
The patent implements parameter changes by adjusting the reference voltage based on charging voltage levels. This allows the temperature threshold to vary dynamically, improving battery safety while maintaining a relatively simple control structure through predetermined voltage relationships
Solution Approach 2:
The patent uses feedback by continuously monitoring the charging voltage and adjusting the reference voltage accordingly. The detecting section monitors temperature-representing voltage and compares it with the dynamically adjusted reference voltage, creating a feedback loop that ensures battery safety without requiring complex control algorithms
3Productivity
If a high charging voltage is applied to charge the battery quickly, then charging speed is improved, but the battery temperature increases and may cause overload
Solution Approach 1:
The patent applies parameter changes by adjusting the reference voltage according to charging voltage. When high charging voltage is applied for fast charging, the reference voltage is increased proportionally, raising the temperature threshold to prevent overload while allowing rapid charging to proceed
Solution Approach 2:
The patent implements preliminary anti-action by pre-establishing the relationship between charging voltage and reference voltage. Before temperature issues occur, the system has already adjusted the reference voltage to appropriate levels based on the charging voltage, preventing temperature-related overload before it happens
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 solution allows for safe and appropriate charging of various battery types by dynamically adjusting the charging threshold, preventing high-temperature overloads and ensuring charging is completed at a relatively low temperature, thereby enhancing safety and adaptability across different battery assemblies.
Implementation Method 1
a detecting section for detecting voltage representing a temperature of the battery assembly
Implementation Method 2
a power supply section for supplying charging current to the battery assembly
Data Source
AI summary
Object of the invention is to provide an improved technique of suitably charging a battery assembly irrespective of the kind of the battery assembly. The representative battery charger 100 includes a power supply section 110, a detecting section 130 that detects voltage that represents a temperature index of the battery assembly 200, 300 a reference voltage that is compared with the detected temperature-representing voltage of the battery assembly. The battery charger 100 stops supplying the charging current when the temperature-representing voltage of the battery assembly reaches or exceeds the reference voltage. The reference voltage varies according to the charging voltage of the battery assembly and thus, the threshold temperature to complete the charge can be varied according to the charging voltage of the battery assembly 200, 300. As a result, an overload state for the battery assembly with high charging voltage and high temperature can effectively be prevented.