Secondary Battery Controller Temperature Switching
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Solution Overview
Problem
Conventional secondary battery controllers for portable equipment often lead to reduced operating time due to battery temperature rise, as they switch batteries based on availability rather than temperature, causing premature battery exhaustion and inability to reuse batteries temporarily reduced by ambient temperature fluctuations.
Innovation Solution
A secondary battery controller with temperature detectors and a switching device that selects batteries based on temperature, switching to another battery when the first reaches a threshold temperature and re-switching when all have been used, with an operating power control to limit load operation and prevent battery overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If batteries are switched based on availability status, then battery control is simplified, but operating time is reduced due to temperature rise
Solution Approach 1:
The patent changes the switching criterion from binary availability status to continuous temperature parameters. The control unit monitors temperature values and switches batteries based on whether temperature exceeds a threshold, allowing for more nuanced control that extends operating time while maintaining simplicity.
Solution Approach 2:
The patent implements feedback by continuously monitoring battery temperature and using this information to make switching decisions. The control unit receives temperature information from detectors and adjusts battery selection accordingly, creating a closed-loop system that optimizes operating time.
2Duration of action of moving object
If batteries are switched when temperature reaches threshold, then continuous operating time is extended, but control complexity increases
Solution Approach 1:
The patent applies self-service by having the control unit automatically monitor temperature and make switching decisions without external intervention. The system serves itself by integrating temperature detection and control logic within the same unit, avoiding the need for additional complex control mechanisms.
Solution Approach 2:
The patent merges the temperature detection function and control decision-making into a single control unit. By combining these functions, the patent reduces overall system complexity while achieving temperature-based battery switching that extends operating time.
3Measurement precision
If multiple temperature detectors are used, then temperature monitoring precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the temperature monitoring function by using multiple temperature detectors positioned at different locations within the battery pack. This segmentation allows for more precise temperature monitoring of individual battery cells or regions without requiring a completely complex monitoring system.
Solution Approach 2:
The control unit is designed to be multi-functional, handling both temperature monitoring from multiple detectors and the battery switching control. This universality reduces overall device complexity by consolidating functions rather than adding separate dedicated components for each function.
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 extends the continuous operating time of portable equipment by managing battery temperature, allowing for efficient battery reuse and maintaining full power operation by strategically switching and controlling battery usage.
Implementation Method 1
a plurality of temperature detectors that detect temperatures of a plurality of secondary batteries having the same rating, respectively
Data Source
AI summary
A secondary battery controller and a method for controlling a secondary battery that can increase the continuous operating time of an apparatus. The secondary battery controller includes a plurality of temperature detectors that detect temperatures of a plurality of secondary batteries; a switching device that connects an output of any one of the plurality of secondary batteries to a load; and a control portion that selects which secondary battery to use from the plurality of secondary batteries and controls the switching device to switch between the secondary batteries based on temperature information of each of the plurality of secondary batteries.