Vehicle Battery Temperature Control With Predictive Cooling Limits
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Solution Overview
Problem
Existing battery temperature control systems in vehicles lead to increased power consumption and reduced cruising distance due to excessive temperature control operations, particularly when look-ahead cooling is employed.
Innovation Solution
A battery temperature control method that predicts temperature transitions based on a travel plan, calculates excessive temperature control amounts, and adjusts the operation time of the temperature control device to minimize unnecessary operations, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If look-ahead cooling is performed to prevent battery temperature from exceeding the upper limit, then battery temperature control reliability is improved, but temperature control system operation time increases and power consumption increases
Solution Approach 1:
The system performs preliminary cooling actions before the battery temperature reaches the upper limit by predicting future temperature based on the travel plan. The control device calculates a predicted temperature that is lower than the upper limit and cools the battery in advance to this predicted temperature, preventing the need for prolonged cooling operations and reducing overall power consumption while maintaining temperature control reliability.
2Reliability
If look-ahead cooling is performed to prevent battery temperature from exceeding the upper limit, then battery temperature control reliability is improved, but temperature control system operation time increases
Solution Approach 1:
The system performs preliminary cooling actions before the battery temperature reaches the upper limit by predicting future temperature based on the travel plan. The control device calculates a predicted temperature that is lower than the upper limit and cools the battery in advance to this predicted temperature, preventing the need for prolonged cooling operations and reducing overall operation time while maintaining temperature control reliability.
Solution Approach 2:
The system uses feedback from the predicted temperature calculation to adjust cooling operations. By continuously monitoring the relationship between the predicted temperature and the upper limit, the control device optimizes cooling duration and intensity, ensuring the battery remains within safe temperature ranges while minimizing unnecessary operation time.
Data Source
AI summary
A battery temperature control method for controlling a temperature of a battery mounted on a vehicle by a temperature control device, the method comprises: a travel plan acquisition step of acquiring a travel plan of the vehicle, a battery input and output acquisition step of acquiring a required input and output of the battery, a target temperature acquisition step of acquiring a first battery temperature threshold, a battery temperature transition prediction step of predicting a temperature transition of the battery when the vehicle travels according to the travel plan, a temperature control amount prediction step of acquiring a predicted temperature control amount of the battery at a first time or a first position in the travel plan, an excessive temperature control amount calculation step of calculating an excessive temperature control amount, a temperature control restriction step, and a temperature control step of controlling the temperature of the battery.