Battery Thermal Sleep Mode for Extreme Climate Start Readiness
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Solution Overview
Problem
Existing battery temperature control systems are inadequate for extreme climates and fail to efficiently manage battery temperatures without excessive power drain, particularly in mobile machines, and lack the capability to enable a 'sleep mode' that allows automatic activation of heating or cooling systems to maintain optimal temperatures.
Innovation Solution
A thermal management system that enables a sleep mode to maintain battery temperature control using an auxiliary battery, activating an externally powered mode when connected to external power sources and an internally powered mode when isolated, allowing for heating or cooling of the main storage battery based on temperature readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the battery system operates in extreme climates with temperature control systems, then the battery temperature can be maintained within optimal ranges, but the power consumption increases excessively
Solution Approach 1:
The system dynamically switches between different operational modes (sleep mode, externally powered mode, internally powered mode) based on real-time conditions including temperature, power availability, and climate. This dynamic adaptation allows the system to maintain optimal battery temperature while minimizing power consumption by activating temperature control only when necessary and using external power sources when available.
Solution Approach 2:
The system changes operational parameters based on environmental conditions and power availability. It adjusts between maintaining tight temperature control when external power is available versus reducing temperature management activity when operating on internal battery power, thereby optimizing the balance between temperature maintenance and power consumption.
2Reliability
If the system activates cooling or heating systems automatically in sleep mode, then battery temperatures can be maintained within limits for system start, but battery power may be excessively drained
Solution Approach 1:
The system performs preliminary temperature management actions during sleep mode to prepare the battery for system startup. By maintaining battery temperature within acceptable limits during idle periods, the system ensures reliable startup capability while minimizing the need for high-power operations during active use, thereby reducing overall power drain.
Solution Approach 2:
The battery system serves itself by automatically monitoring and adjusting its own temperature during sleep mode without requiring external intervention. The temperature control system activates only when battery temperature approaches critical thresholds, providing just enough service to maintain startup capability while conserving power.
3Duration of action of moving object
If the temperature control system is powered by the auxiliary battery, then the main storage battery can be deenergized for temperature monitoring, but the control capability is limited by auxiliary battery power capacity
Solution Approach 1:
The auxiliary battery serves as an intermediary power source that enables the temperature control system to operate independently of the main storage battery. This intermediary arrangement allows the main battery to remain deenergized for extended periods while the auxiliary battery provides sufficient power for temperature monitoring and control, effectively extending the duration of temperature management capability.
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 solution effectively maintains battery temperatures within optimal ranges while minimizing power consumption, enabling prolonged operation and safety by automatically adjusting thermal management based on power availability and temperature conditions.
Implementation Method 1
activate an externally powered battery management mode when connected to one or more external power sources, to heat or cool the main storage battery based on the battery temperature
Implementation Method 2
activate an externally powered battery management mode when connected to one or more external power sources, to heat or cool the main storage battery based on the battery temperature
Data Source
AI summary
A method of thermally managing a battery system including enabling a sleep mode, the sleep mode causing the battery system to maintain a capability to control a temperature of a main storage battery of the battery system with a temperature control system while the machine is not in operation; monitoring a battery temperature; activating an externally powered battery management mode when connected to one or more external power sources, to heat or cool the main storage battery based on the battery temperature of the main storage battery as determined by the temperature control system, to charge the main storage battery, or to charge the auxiliary battery; and activating an internally powered thermal battery management mode when isolated from external power sources, to heat or cool the main storage battery, the internally powered battery management mode being different than the externally powered battery management mode.