Programmable Battery Multiplexer for Safe Sequential Charging
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Solution Overview
Problem
Current battery charging systems require multiple chargers for multiple batteries, are cumbersome to use, and pose risks of overcharging and electrical faults, especially in gas-powered vehicles and equipment, necessitating a safer and more efficient solution for charging multiple batteries simultaneously.
Innovation Solution
A programmable battery charging multiplexed system with a water-resistant housing, LCD display, programming pushbuttons, and polarized connectors that allows up to eight batteries to be charged sequentially using a single charger, preventing overcharging and reducing manual handling risks, while detecting faults and voltage levels for safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple individual battery maintainers are used for each battery, then each battery can be maintained independently, but the system becomes costly and space consuming
Solution Approach 1:
The patent combines multiple battery charging functions into a single multi-battery charging system that can charge up to eight batteries simultaneously. The system integrates multiple charging channels, control circuits, and safety features into one unified device, eliminating the need for multiple separate battery maintainers while maintaining independent charging capability for each battery.
Solution Approach 2:
The charging system is designed with universal functionality to handle multiple battery types and configurations. It features programmable charging parameters, multiple charging modes, and the ability to adapt to different battery requirements, making a single device capable of replacing multiple specialized chargers.
2Device complexity
If an expensive charger capable of handling multiple batteries simultaneously is purchased, then the need for multiple chargers is eliminated, but the device complexity and cost increase
Solution Approach 1:
The charging system is segmented into multiple independent charging channels, each capable of charging one battery at a time. This modular architecture allows the system to handle multiple batteries simultaneously while using simpler, more cost-effective components in each channel rather than requiring a single complex high-capacity charger.
Solution Approach 2:
The system incorporates automatic battery detection, identification, and charging parameter selection capabilities. The control circuit automatically determines battery type, charge state, and appropriate charging parameters without user intervention, reducing the need for complex manual configuration interfaces and expensive user-friendly features.
3Ease of manufacture
If a single charger is used for multiple batteries, then cost is reduced, but the requirement to regularly move the charger between different batteries becomes time-consuming and cumbersome
Solution Approach 1:
The system combines multiple battery connection terminals and charging channels within a single stationary unit. Users connect multiple batteries to the same charging device simultaneously through dedicated terminals, eliminating the need to physically move the charger between batteries. The system handles multiple batteries in place, improving operational convenience.
4Device complexity
If manual connection of battery charger is used, then device complexity is reduced, but risks of sparks and potential explosion in the presence of flammable gases increase
Solution Approach 1:
The system introduces an automatic control circuit as an intermediary between the user and the battery charging process. The control circuit automatically detects battery parameters, manages charging current, and controls connection/disconnection sequences, eliminating manual intervention that could cause sparks. The system includes safety features like automatic cutoff and protected switching mechanisms.
Solution Approach 2:
The system replaces manual mechanical connection operations with automated electronic control. The control circuit automatically manages electrical connections, current flow, and charging parameters through electronic switching rather than manual plug-and-play operations, reducing the risk of sparks from manual connector manipulation.
5Duration of action of moving object
If battery is connected to charger for extended period, then charging completeness is improved, but the risk of overcharging increases which can reduce battery lifespan and efficiency
Solution Approach 1:
The charging system incorporates continuous feedback mechanisms through control circuits that monitor battery voltage, current, and charge state in real-time. The system automatically adjusts charging parameters and terminates charging when the battery reaches full charge or when safety thresholds are approached, preventing overcharging while ensuring complete charging. The feedback loop maintains optimal charging duration without user intervention.
Data Source
AI summary
A programmable battery charging multiplexed system for efficient and safe charging of a plurality of batteries is disclosed. The system comprises a housing with an integrated LCD display and programming pushbuttons, along with multiple cable assemblies for connecting up to eight batteries and works in concert with an external charger. The multiplexer system features a microprocessor with digital I/O pins and non-volatile memory for storing operational parameters and configurations. The system includes a 12V DC power supply cord that converts 110V AC to 12V DC. Relays on the circuit board control the charging sequence, and a terminal strip with overcurrent protection ensures safe connections. The method of operation involves connecting the power supply, batteries, and user provided charger to the multiplexer, engaging a fault detection mode, programming charging and idle times after all faults resolved, and sequentially recharging the batteries.