Battery Pack Heating Control With Overheat Cutoff Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing temperature control devices for vehicle battery packs often lead to excessive heating, which accelerates battery deterioration and reduces durability.
Innovation Solution
A temperature control device for vehicle battery packs that includes a medium circulation path, a heating part, a fan, and an excessive heating preventing part, which stops the heating operation at a predetermined temperature to prevent overheating, comprising a thermostat switch or temperature fuse, strategically positioned to detect and halt excessive heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heater is provided at the battery pack to heat the battery at low temperature, then the battery output is improved, but excessive heating occurs which reduces battery durability
Solution Approach 1:
The patent implements a feedback control system using a temperature detector that continuously monitors the battery temperature and provides feedback to the controller. The controller adjusts the heater operation based on this feedback, stopping heating when the temperature reaches a predetermined level. This closed-loop feedback mechanism prevents excessive heating while ensuring the battery reaches adequate temperature for optimal output.
Solution Approach 2:
The patent introduces a temperature detector and controller as intermediary components between the heater and the battery. The temperature detector acts as a mediator that senses the actual battery temperature and transmits this information to the controller, which then mediates the heater's operation. This intermediary system ensures precise temperature control and prevents direct uncontrolled heating that would damage the battery.
2Productivity
If heating is provided to maintain battery temperature, then battery performance is improved, but temperature control precision deteriorates leading to overheating
Solution Approach 1:
The temperature detector continuously monitors battery temperature and provides real-time feedback to the controller. This feedback enables precise temperature control by allowing the controller to make incremental adjustments to heating based on actual temperature conditions, rather than using fixed or open-loop control that would lead to overheating.
Solution Approach 2:
The system implements self-service temperature control where the temperature detector autonomously monitors the battery temperature and the controller automatically adjusts heating without external intervention. The system serves itself by using its own temperature sensing capability to regulate its own heating operation, ensuring precise control while maintaining battery performance.
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
Effectively suppresses excessive heating of the battery, thereby improving its durability by ensuring controlled temperature maintenance and early detection of overheating conditions.
Implementation Method 1
a heating part (20) which heats the heating medium; a fan (22) which sends the heating medium
Implementation Method 2
a fan (22) which sends the heating medium
Implementation Method 3
an excessive heating preventing part which stops a heating operation of the heating part (20) at a predetermined temperature
Data Source
AI summary
In a temperature control device for a battery pack includes: a medium circulation path which is provided within a battery case accommodating a battery for travelling the vehicle and circulates heating medium therein to heat the battery; a heating part which is provided in the medium circulation path and heats the heating medium; a fan which is provided in the medium circulation path and sends the heating medium; and an excessive heating preventing part which is provided in the medium circulation path and stops a heating operation of the heating part at a predetermined temperature.