High-Voltage Battery Temperature Display for Driver Performance Awareness
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Solution Overview
Problem
In electrified vehicles, temperature information related to the high voltage battery system is not conveyed to the driver, leading to potential suboptimal performance due to unknown temperature states.
Innovation Solution
A system with temperature sensors and a controller communicates temperature information to a human machine interface (HMI), displaying a temperature gradient and efficiency factor based on sensed temperatures across the battery system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If temperature information is displayed on HMI, then driver awareness of battery temperature state is improved, but device complexity increases due to additional sensors and communication systems
Solution Approach 1:
The battery system is divided into multiple modules, each equipped with its own temperature sensor. This segmentation allows for distributed temperature monitoring across different battery modules, enabling comprehensive temperature information collection without requiring a single complex centralized sensing system.
Solution Approach 2:
A controller acts as an intermediary between the temperature sensors and the HMI display. The controller receives temperature data from multiple sensors, processes this information to determine overall battery temperature status, and communicates the processed data to the HMI. This intermediary approach simplifies the HMI's processing requirements while enabling comprehensive temperature monitoring.
2Measurement precision
If multiple temperature sensors are deployed across battery modules, then temperature measurement precision is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The battery pack is segmented into multiple modules, with temperature sensors strategically placed in representative locations within each module. This segmentation approach provides comprehensive temperature coverage across the entire battery system while avoiding the need for excessive sensors, as each sensor represents the temperature characteristics of its respective module.
Solution Approach 2:
Temperature sensors are positioned to measure local temperature conditions in representative locations within each battery module. By capturing local temperature quality at key positions, the system infers overall battery temperature status without requiring uniform sensor distribution throughout every component, thus reducing sensor count while maintaining measurement precision.
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
Enables the driver to understand the temperature state of the high voltage battery system, optimizing performance by visualizing temperature variations and efficiency.
Implementation Method 1
The at least one temperature sensor is configured to sense a temperature of the at least one battery module
Data Source
AI summary
A vehicle system that communicates temperature information of a high voltage battery system of an electrified vehicle includes at least one temperature sensor, a controller, and a human machine interface (HMI). The at least one temperature sensor is disposed on at least one battery module of the high voltage battery system. The at least one temperature sensor is configured to sense a temperature of the at least one battery module. The controller receives the sensed temperature and determines a temperature profile of the high voltage battery system. The HMI is configured to convey temperature information of the high voltage battery system, wherein the controller communicates a signal to the HMI indicative of the temperature profile.