Dynamic Battery Temperature Display Thresholds
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Solution Overview
Problem
Conventional battery temperature display devices for vehicles do not accurately reflect the varying performance characteristics of secondary batteries during discharge and charge, leading to a sense of incongruity for drivers regarding the correlation between battery temperature and vehicle behavior.
Innovation Solution
A battery temperature display device that adjusts the boundaries and thresholds of temperature display segments based on the vehicle's operation state and the secondary battery's use state, including whether it is traveling, charging, or exceeding a predetermined dead zone period, to provide a more accurate representation of battery performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery temperature is uniformly displayed irrespective of the operation state of the secondary battery, then the temperature display is simple and stable, but the driver may feel a sense of incongruity in the correlation between a change in the behavior of the vehicle caused by the extent of change in the battery performance and the display value in the temperature display part
Solution Approach 1:
The patent applies dynamics by making the temperature display thresholds adjustable rather than fixed. The display control part changes the thresholds according to the operation state of the vehicle and the use state of the secondary battery, allowing the display to adapt dynamically to different conditions. This resolves the contradiction by making the display reliable across varying conditions without requiring a completely complex system, as the adjustments are based on predefined operational states.
Solution Approach 2:
The patent changes the parameters of the temperature display by adjusting the thresholds that define temperature ranges. Instead of using fixed thresholds, the system modifies these parameters based on the battery's charge/discharge state and vehicle operation mode. This allows the same temperature value to have different display meanings depending on the operational context, improving accuracy without excessive complexity.
2Measurement precision
If the boundaries between temperature display segments are fixed, then the display structure is simple and stable, but it cannot accurately reflect the varying performance characteristics of secondary batteries during discharge and charge
Solution Approach 1:
The patent makes the temperature display boundaries dynamic rather than fixed. The display control part adjusts the boundaries based on the charge/discharge state of the battery and the vehicle's operation state. This dynamic adjustment allows the system to accurately reflect battery performance characteristics under different conditions while maintaining a relatively simple overall structure by using state-based control logic.
Solution Approach 2:
The patent changes the parameters defining the temperature display segments. Instead of fixed temperature boundaries, the system modifies these parameters according to the battery's operational state. This allows the same physical temperature to be displayed differently depending on whether the battery is charging or discharging, improving measurement precision without requiring a completely complex system architecture.
3Measurement precision
If the temperature display thresholds are frequently adjusted to match battery performance changes, then the accuracy of performance indication is improved, but the display stability deteriorates
Solution Approach 1:
The patent applies dynamics with controlled adjustment frequency. The display thresholds are adjusted based on changes in battery operation state, but only when the state actually changes. This prevents excessive or frequent adjustments that would cause display instability, while still maintaining accuracy by updating the thresholds whenever the operational context changes. The system balances dynamics and stability by tying adjustments to meaningful state transitions.
Solution Approach 2:
The patent uses feedback by monitoring the operation state and use state of the secondary battery to determine when to adjust temperature display thresholds. The display control part continuously receives information about battery state and adjusts the display parameters accordingly, but only when necessary. This feedback mechanism ensures accuracy while preventing unnecessary adjustments that would reduce display stability.
Data Source
AI summary
A battery temperature display device of a vehicle is provided. The battery temperature display device includes: a plurality of display elements sequentially arranged according to values of a display temperature so as to respectively display each of a plurality of temperature ranges into which a predetermined total temperature display range of the secondary battery is divided, wherein the display elements include a highest temperature display element and a lowest temperature display element respectively display temperature ranges of a highest temperature and a lowest temperature in which discharge and charge of the secondary battery are restricted in the total temperature display range; and a display control part for changing boundaries between the highest temperature display element, the lowest temperature display element and other display elements or thresholds related to divisions of the display temperature in accordance with an operation state of the vehicle or a use state of the secondary battery.