Battery Charger with Soft Start and Periodic Maintenance
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Solution Overview
Problem
Existing battery charging apparatuses fail to optimize battery lifespan and maintain optimal charge levels, particularly during prolonged inactivity, as they cannot recognize and counter sulphation issues in batteries connected to electric circuits, such as those in unused motor vehicle batteries.
Innovation Solution
A battery charging apparatus with a control device and processor that runs tailored charging cycles, including a 'soft start' step to address sulphation and a maintenance mode to keep batteries at optimal charge levels, using an RGB LED for user feedback and safety features like thermal protection and acoustic alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery remains connected to an electric circuit during prolonged inactivity, then the battery is available for immediate use, but the battery develops sulphation and loses charge
Solution Approach 1:
The charging apparatus performs periodic charging cycles even when the battery is in standby mode. The system automatically initiates charging sessions at predetermined intervals to counteract sulphation development while maintaining the battery connected to the vehicle's electrical system, thus resolving the contradiction between continuous availability and sulphation prevention
Solution Approach 2:
The system enables the battery to charge itself automatically during standby periods without requiring external intervention. The charging apparatus detects battery status and autonomously activates charging cycles, allowing the battery to maintain its own health while remaining available for immediate use
2Reliability
If a battery is charged continuously to maintain optimal charge level, then the battery charge is maintained, but the battery lifespan is reduced due to overcharging stress
Solution Approach 1:
Instead of continuous charging, the system employs periodic charging cycles with specific on/off timing. The battery is charged only when necessary to maintain optimal charge levels, avoiding the stress of continuous charging while preventing sulphation during idle periods
Solution Approach 2:
The charging parameters are dynamically adjusted based on battery status, temperature, and time of day. The system varies charging intensity and duration to match actual battery needs, optimizing both charge maintenance and lifespan extension
3Adaptability or versatility
If a charging apparatus automatically detects battery type and adjusts charging parameters, then charging suitability is optimized, but the device complexity increases
Solution Approach 1:
The system uses simple feedback mechanisms where the battery itself provides identification information through its electrical characteristics during connection. The charging apparatus reads this feedback and automatically configures appropriate charging parameters, achieving high adaptability without complex user interfaces or manual configuration
Data Source
AI summary
An apparatus and a method for charging a battery are disclosed. The apparatus includes a LED member that includes a single LED that is suitable for emitting light of different colours, each colour corresponding to a different operating status of the apparatus, and an acoustic signalling device that is suitable for emitting an acoustic signal indicating a malfunction of the apparatus or the battery. The method includes a first battery heating and desulphation step during which the battery is supplied with current pulses having a maximum value that is considerably lower than the maximum value of the charging current in a subsequent second constant current charging step, each current pulse being generated when the current absorbed by the battery after the delivery of a previous current pulse falls below a minimum preset value.