Battery Pack Thermal Conditioning Setpoint Control
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Solution Overview
Problem
Existing thermal conditioning systems for electric vehicle battery packs fail to optimize performance while ensuring a long lifetime and optimal functionality of electronic components, as they often require constant active states during charging, which can be detrimental and inefficient.
Innovation Solution
A method and arrangement for thermal conditioning that calculates a setpoint temperature for the battery pack to achieve optimal performance during use, executing a ready-to-run function by heating or cooling the pack to this temperature, and terminating charging when the pack reaches this state to enter a sleep mode, thus ensuring full performance without continuous active state requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery pack is kept in a constant active state during charging to ensure optimal performance, then the performance and responsiveness of the battery pack is improved, but the lifetime and functionality of electronic components deteriorate due to continuous operation and heat generation
Solution Approach 1:
The system performs preliminary thermal conditioning of the battery pack before it is needed for operation. By calculating the time required to reach optimal temperature and charging the pack accordingly in advance, the system ensures the battery is ready for immediate use while allowing electronic components to remain in a lower-power state during the conditioning phase, thus extending their lifetime.
2Productivity
If the battery pack is charged continuously to maintain optimal state of charge for performance, then the available energy and power output are improved, but the lifetime of the battery pack deteriorates due to excessive charging cycles and stress
Solution Approach 1:
The system applies partial charging action by only charging the battery pack to the extent necessary to achieve optimal performance for the predetermined time period, rather than continuously charging to maximum capacity. This partial charging approach provides sufficient energy for upcoming operations while reducing overall charging stress and extending battery lifetime.
3Power
If thermal conditioning is applied continuously to maintain optimal temperature for performance, then the power output and efficiency are improved, but the energy consumption and heat generation increase which can harm the battery pack
Solution Approach 1:
The system applies thermal conditioning periodically rather than continuously. It calculates the specific time period during which thermal conditioning is needed to achieve optimal temperature, then applies heating or cooling only during this calculated window. This periodic approach ensures optimal power output when needed while minimizing energy consumption and heat generation that could harm the battery pack.
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
The solution ensures the battery pack provides full performance for a predetermined time while extending its lifetime and optimizing electronic component functionality by limiting unnecessary charging and maintaining a thermally conditioned state.
Implementation Method 1
The thermal conditioning unit (11) is configured for heating or cooling of the battery pack (4) depending on thermal requirements related to the battery pack (4)
Implementation Method 2
The thermal conditioning unit (11) is configured for heating or cooling of the battery pack (4) depending on thermal requirements related to the battery pack (4)
Data Source
AI summary
The invention relates to a method for thermal conditioning of a battery pack (4), wherein said battery pack (1) comprises a plurality of battery cells (4a, 4b, 4c, . . . ) and forms part of an electric storage system (15), said method comprising a step of executing a ready-to-run function for optimizing the performance of said battery pack (4) during use. Furthermore, the method comprises the steps of: calculating a setpoint temperature (Ts) for the battery pack (4) to reach in order to provide a sufficient level of performance without further thermal conditioning during a predetermined time period (t); and thermally conditioning said battery pack (4) so as to reach said setpoint temperature (Ts). The invention also relates to an arrangement for such a thermal conditioning.