Battery Cooling Control Using Vehicle Speed and Temperature
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Solution Overview
Problem
The existing systems for controlling battery cooling in hybrid electric vehicles require an inlet temperature sensor, increasing costs and necessitating a separate evaluation process to ensure sensor consistency, which complicates the development process.
Innovation Solution
A battery cooling control device and method that monitor temperature and vehicle speed information to determine the operating mode of the cooling fan, generating control signals without relying on an inlet temperature sensor, thereby eliminating the need for additional sensors and evaluation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an inlet temperature sensor is used to control battery cooling, then the cooling control accuracy is improved, but the system cost increases and device complexity increases
Solution Approach 1:
The patent removes the inlet temperature sensor from the system entirely. Instead of measuring inlet temperature directly, the system extracts cooling control information from battery temperature measurements and vehicle speed data, eliminating the need for the separate inlet temperature sensing component and its associated evaluation processes.
Solution Approach 2:
The existing battery temperature sensor and vehicle speed sensor are made multi-functional. These sensors continue to serve their original purposes while also providing data for cooling control decisions, replacing the need for dedicated inlet temperature sensing functionality.
2Productivity
If vehicle speed information is incorporated into cooling control, then cooling efficiency is improved, but control system complexity increases
Solution Approach 1:
The patent merges the cooling control function with existing vehicle operating parameters (speed and battery temperature). By combining these readily available data sources, the system achieves improved cooling efficiency without adding separate sensing or control hardware, thus avoiding increased system complexity.
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
This approach allows for effective battery cooling control without an inlet temperature sensor, reducing costs and development time while maintaining performance, by using vehicle speed and battery temperature data to manage the cooling fan's operation.
Implementation Method 1
a cooling fan that cools the battery by operating a motor
Data Source
AI summary
A battery cooling control device includes a controller that monitors temperature information of a battery, monitors vehicle speed information of a vehicle, determines an operating mode of the vehicle on the basis of the vehicle speed information and generates control information of a cooling fan by determining a control condition of the cooling fan that has been set to correspond to the operating mode of the vehicle, based on the temperature information of the battery and the vehicle speed information, and controls cooling of the battery by outputting, to the cooling fan, a control signal corresponding to the control information of the cooling fan.