Battery Thermal Preconditioning for Safe EV Charging Arrival
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Solution Overview
Problem
Existing electric vehicles cannot pre-control the temperature of power batteries during travel to ensure safe charging, especially in varying temperature conditions, which affects charging duration and efficiency.
Innovation Solution
A battery thermal management method that estimates electricity consumption and adjusts battery temperature in advance based on remaining charge, mileage, and ambient conditions to ensure the battery is within a preset range before reaching a charging station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery temperature is adjusted in advance during travel to ensure optimal charging conditions, then charging efficiency is improved, but the risk of insufficient charge for reaching the charging station increases
Solution Approach 1:
The system performs preliminary temperature adjustment of the battery during travel to the charging station, rather than waiting until charging begins. This preliminary action ensures the battery reaches optimal temperature for efficient charging while the vehicle is still in transit, maximizing the benefit of temperature optimization without extending total charging time.
Solution Approach 2:
The system continuously monitors battery temperature, remaining charge, and estimated arrival time at the charging station. Based on this feedback, it dynamically adjusts the temperature control strategy - intensifying cooling when the station is near and reducing intensity when farther away, thereby preventing insufficient charge while maintaining charging efficiency.
2Reliability
If the battery temperature is cooled during high-temperature charging to ensure safety, then charging safety is improved, but charging power must be reduced
Solution Approach 1:
The system performs preliminary cooling of the battery during travel to the charging station, reducing the initial battery temperature before charging begins. This preliminary action allows the charging process to start with lower temperature, enabling higher charging power to be maintained for longer periods while still ensuring safety through continued temperature management.
3Ease of operation
If the battery temperature is heated in low-temperature environment to ensure battery activity, then charging capability is improved, but charging duration increases
Solution Approach 1:
The system performs preliminary heating of the battery during travel to the charging station, raising the battery temperature to optimal levels before charging begins. This preliminary heating ensures the battery is ready for high-power charging immediately upon connection, eliminating the need for extended heating time during the charging process itself and thus reducing total charging duration.
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
Enhances charging efficiency and safety by pre-controlling battery temperature, reducing the risk of mid-trip parking due to insufficient charge, and optimizing energy consumption.
Implementation Method 1
a thermal management system on the vehicle to adjust a temperature of the power battery to be within a preset temperature range
Data Source
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Figure 3
AI summary
A battery thermal management method and apparatus, an electronic device, and a storage medium are provided. The method includes: estimating first electricity consumption required for a vehicle to travel a navigation distance; estimating second electricity consumption of a passenger compartment during the vehicle's travel of the navigation distance; if a response signal indicating that charging is permitted is received within a preset duration after the charging request signal is generated, then estimating third electricity consumption required for a thermal management system on the vehicle to adjust a temperature of a power battery to be within the preset temperature range during the travel of the navigation distance; if the sum of the first electricity consumption, the second electricity consumption, and the third electricity consumption is less than or equal to the remaining charge amount, controlling the thermal management system to adjust the temperature of the power battery to be within the preset temperature range. Thus, it helps improve the reliability and safety of pre-control over the temperature of the power battery.