Battery Thermal Management with Resistive Heating
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Solution Overview
Problem
Lithium-ion battery packs in IT infrastructure face performance degradation and safety issues at low temperatures, affecting their ability to provide reliable power during data storage operations and power failures.
Innovation Solution
A thermal management system with resistive heating elements and a controller that monitors battery temperature, energizing or deenergizing the heating elements to maintain the battery pack within a desired temperature range, ensuring optimal performance and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If lithium-ion battery packs operate at low temperatures, then energy consumption is reduced, but performance degrades and safety issues occur
Solution Approach 1:
The system changes the temperature parameter of the battery pack by activating heating elements when the temperature falls below a predetermined threshold. This parameter change ensures the battery operates within its optimal temperature range, maintaining performance and safety while minimizing energy consumption through selective heating only when necessary.
2Reliability
If heating elements are activated to raise battery temperature, then battery performance and safety are improved, but energy consumption increases
Solution Approach 1:
The system employs a temperature sensor that continuously monitors the battery pack temperature and provides feedback to the controller. The controller compares the measured temperature with a predetermined threshold and selectively activates or deactivates the heating elements accordingly. This feedback mechanism ensures heating is applied only when necessary, optimizing the balance between battery performance and energy consumption.
3Reliability
If temperature monitoring and heating control systems are added, then battery safety and performance are enhanced, but device complexity increases
Solution Approach 1:
The battery thermal management system is self-regulating through the interaction of the temperature sensor, controller, and heating elements. The sensor automatically detects temperature conditions, the controller processes this information and makes decisions, and the heating elements execute the necessary adjustments without external intervention. This self-service approach enhances safety and performance while keeping the system relatively simple and autonomous.
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 system effectively maintains the battery pack within a suitable temperature range, enhancing its performance and safety, thereby ensuring reliable power supply during data storage and power failures.
Implementation Method 1
The one or more heating elements may be resistive heating elements
Data Source
AI summary
A thermal management system includes one or more heating elements positioned proximate a battery pack. A temperature sensor is configured to determine a battery temperature for the battery pack. A controller is configured to: compare the battery temperature to a desired set point, and if the battery temperature is below the desired set point, energize the one or more heating elements positioned proximate the battery pack to raise the temperature of the battery pack.