Battery Heater Hysteresis Control for Outdoor Temperature Swings
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Solution Overview
Problem
Battery-powered devices exposed to outdoor temperature extremes experience performance degradation due to temperature fluctuations, which can hinder their functionality.
Innovation Solution
A heater is integrated into the device to maintain optimal battery temperature through multiple heating states, utilizing hysteresis thresholds to stabilize temperature control and conserve battery power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heater is used to maintain battery temperature, then battery performance is improved, but power consumption increases
Solution Approach 1:
The heater operates in multiple dynamic states (off, low power, high power) rather than a fixed state, allowing the system to adapt heating intensity to current temperature conditions and power availability, resolving the contradiction between maintaining performance and managing power consumption
Solution Approach 2:
The system changes the power consumption parameter of the heater based on temperature thresholds and power availability, switching between different power levels to balance battery performance maintenance with power conservation
2Reliability
If heating power is increased to ensure sufficient energy for device operations, then device functionality is improved, but battery temperature control becomes less stable
Solution Approach 1:
The heater operates periodically based on hysteresis thresholds, turning on when temperature drops below a lower threshold and turning off when it rises above an upper threshold, creating stable periodic heating cycles that prevent both overheating and excessive cooling
Solution Approach 2:
The system applies preliminary heating action by turning on the heater before the battery temperature becomes critically low, using hysteresis to anticipate temperature drops and maintain stable temperature control
3Reliability
If the heater operates continuously to maintain temperature, then battery performance is improved, but power availability for other functions decreases
Solution Approach 1:
The heater provides partial heating action at low power levels when full heating is not needed, and only activates high power heating when absolutely necessary, avoiding excessive power consumption while still maintaining adequate battery performance
Solution Approach 2:
The system uses feedback from temperature sensors and power level monitoring to dynamically adjust heater operation, ensuring heating is applied only when and where needed, optimizing the balance between battery performance and power availability for other functions
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
The heater ensures consistent device performance by maintaining battery temperature within an optimal range, reducing power consumption fluctuations, and extending battery life.
Implementation Method 1
A heater may be provided, and may offer multiple states (e.g., levels) of heating
Data Source
AI summary
Systems, apparatuses, and methods are described for managing temperature of a rechargeable battery between multiple available states of heating. Different thresholds may be used for turning on, and turning off, one or more heating elements associated with the rechargeable battery, and/or for otherwise changing states of the one or more heating elements.