Battery Pack Temperature Protection With Adaptive Limit Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing protection circuits for battery packs use fixed temperature limit values, making it difficult to appropriately respond to changes in battery pack output, which can lead to inadequate temperature protection.
Innovation Solution
A protection device for battery packs that includes a temperature sensor and a controller. The controller measures the temperature of the battery module, performs a protection operation if the temperature exceeds a set limit, and adjusts the temperature limit value based on subsequent temperature measurements after the protection operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed temperature limit value is used for protection operation, then the protection circuit can be simplified and manufactured easily, but it cannot appropriately respond to changes in battery pack output
Solution Approach 1:
The temperature limit value is changed from a fixed static value to a dynamic value that varies according to the battery pack's output. The controller adjusts the temperature limit value based on real-time output detection, enabling the protection circuit to adapt to different operating conditions while maintaining a relatively simple overall structure.
Solution Approach 2:
The temperature limit parameter is made variable based on the output parameter. Different temperature limit values are set corresponding to different output levels, allowing the protection circuit to respond appropriately to output changes without requiring a completely complex system redesign.
2Reliability
If a fixed temperature limit value is used, then the protection circuit structure remains simple, but residual heat damage cannot be minimized under varying output conditions
Solution Approach 1:
The controller continuously detects the battery pack's output and adjusts the temperature limit value accordingly. This feedback mechanism ensures that the temperature protection is optimized for each operating condition, minimizing residual heat damage while keeping the control system relatively simple through intelligent algorithms.
3Adaptability or versatility
If the temperature limit value is adjusted according to output, then appropriate temperature protection can be achieved, but the control system becomes more complex
Solution Approach 1:
The protection circuit performs self-adjustment by automatically detecting the output and selecting the appropriate temperature limit value without requiring manual intervention. This self-service capability maintains ease of operation while achieving adaptive temperature protection.
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 solution provides an adaptive temperature protection function that adjusts to changes in battery pack output, effectively minimizing damage from residual heat and improving safety.
Implementation Method 1
a temperature sensor that may be configured to measure a temperature of the battery module
Data Source
AI summary
A protection device for a battery pack including a battery includes: a temperature sensor configured to measure a temperature of the battery module; and a control device configured to perform a protection operation of the battery pack if a first temperature value measured through the temperature sensor during a use of the battery module is greater than a first temperature limit value and to correct the first temperature limit value according to a second temperature value measured through the temperature sensor after the protection operation is performed.