EV Battery Temperature Control for Auxiliary Power in Stalled States
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery temperature control systems in electric vehicles consume excessive electric power when adjusting battery temperature in non-travelable conditions, such as stalling in arctic areas, leading to reduced energy for auxiliary devices and occupant discomfort.
Innovation Solution
A battery temperature control system that adjusts battery temperature based on the energy needed for auxiliary devices rather than travel, using a processor to calculate and maintain appropriate temperatures for energy output, reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the battery temperature is adjusted to the range appropriate for vehicle travel (20-30°C) in non-travelable conditions, then the battery can output sufficient energy for travel, but excessive electric power is consumed reducing energy available for auxiliary devices
Solution Approach 1:
The patent applies dynamics by making the battery temperature control strategy adaptive and changeable based on vehicle state. The system dynamically switches between two temperature control modes: (1) maintaining battery temperature in the 20-30°C range when the vehicle is in a travelable state, and (2) maintaining battery temperature in a wider range when the vehicle is in a non-travelable state. This dynamic adjustment of control strategy based on real-time vehicle conditions resolves the contradiction by consuming less power during non-travelable periods while ensuring adequate power availability when travel is needed.
2Reliability
If the battery temperature is continuously maintained at optimal travel temperature, then the battery is ready for immediate travel, but energy is wasted when travel is not possible or necessary
Solution Approach 1:
The patent applies segmentation by dividing the battery temperature control into distinct segments based on vehicle state. The control system segments the temperature maintenance strategy into: (1) a travel-ready segment where battery temperature is actively maintained in the optimal 20-30°C range when travel is needed, and (2) an energy-saving segment where temperature maintenance is relaxed when the vehicle is in a non-travelable or travel-unnecessary state. This segmentation allows the system to achieve reliability only when necessary while avoiding energy waste during periods when travel cannot or does not need to occur.
3Power
If the battery temperature is adjusted for travel readiness in non-travelable states, then travel capability is maintained, but less energy remains for auxiliary devices like air-conditioners
Solution Approach 1:
The patent applies dynamics by dynamically adjusting the battery temperature control strategy based on vehicle state to balance power availability and auxiliary device operation. When the vehicle is in a non-travelable state, the system dynamically switches to a relaxed temperature control mode that allows the battery to operate at lower temperatures, thereby reducing power consumption and preserving energy for auxiliary devices. When travel becomes necessary, the system dynamically transitions back to active temperature maintenance to ensure travel readiness. This dynamic adaptation resolves the contradiction between maintaining travel capability and ensuring auxiliary device operation.
Data Source
AI summary
A battery temperature control system to be applied to a vehicle includes a battery, an auxiliary device, and a processor. The auxiliary device includes an air-conditioner. The processor is configured to determine whether the vehicle is in a non-travelable state or a travel unnecessary state. The processor is configured to, upon detecting that the vehicle is in the non-travelable state or the travel unnecessary state, calculate first energy necessary to drive the auxiliary device, and adjust a temperature of the battery to a first battery temperature appropriate for the battery to output the first energy.