Battery Temperature Control for Long-Parking Power Savings
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Solution Overview
Problem
Existing battery temperature adjustment systems for electric vehicles consume excessive electric power when maintaining battery temperature during prolonged parking, leading to increased electricity bills and reduced battery performance.
Innovation Solution
A battery temperature adjustment system that uses a control device to determine if the scheduled parking time is longer than a predetermined period, and if so, stops maintaining the battery temperature within a target range to conserve power, while resuming temperature adjustment closer to the scheduled parking end time to ensure battery readiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the temperature adjustment device maintains battery temperature within a predetermined temperature range during parking, then battery performance is maintained, but electric power consumption increases
Solution Approach 1:
The patent applies dynamics by making the temperature adjustment control adaptive rather than static. The control device dynamically adjusts whether to execute temperature maintenance based on the scheduled parking time period. For short parking periods, temperature maintenance is executed to ensure battery performance. For long parking periods, temperature maintenance is suspended to reduce power consumption. This dynamic control strategy resolves the contradiction between maintaining battery performance and reducing electric power consumption during parking.
2Reliability
If the temperature adjustment device maintains battery temperature during prolonged parking, then battery output is maintained, but the state of charge (SOC) of the battery is lowered
Solution Approach 1:
The patent applies preliminary action by acquiring scheduled parking information in advance and determining the parking time period before actually parking occurs. This allows the control device to proactively decide whether to execute temperature maintenance control, preventing unnecessary SOC depletion before it happens. By making the decision in advance based on scheduled information, the system avoids the problem of SOC reduction while maintaining battery output when needed.
3Use of energy by moving object
If the battery temperature is not adjusted to the predetermined temperature range during parking, then electric power consumption is reduced, but battery usage may be restricted when the vehicle is started up
Solution Approach 1:
The patent applies parameter changes by using the scheduled parking time period as a decision parameter to change the control mode. When the scheduled parking time is short, the system changes to temperature maintenance mode to ensure battery usage convenience. When the scheduled parking time is long, the system changes to power-saving mode. This parameter-based control strategy resolves the contradiction between reducing power consumption and maintaining battery usage convenience by adapting to different parking scenarios.
Data Source
AI summary
A battery temperature adjustment system includes: a battery; a temperature adjustment device to which electric power from the battery is supplied and configured to adjust a battery temperature; and a control device configured to execute a first control of controlling the temperature adjustment device to maintain the battery temperature. The control device acquires scheduled parking information of a vehicle, and determines whether a scheduled parking time period of the vehicle is equal to or longer than a predetermined time period based on the scheduled parking information. When the scheduled parking time period is shorter than the predetermined time period, the control device executes the first control during parking of the vehicle, and when the scheduled parking time period is equal to or longer than the predetermined time period, the control device does not execute the first control during parking of the vehicle.