In-Vehicle Backup Control Apparatus Voltage Threshold Management
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Solution Overview
Problem
In-vehicle backup systems face challenges in supplying electric power to multiple loads simultaneously when the energy stored in the power storage unit is insufficient, leading to inadequate power distribution during abnormal states.
Innovation Solution
An in-vehicle backup control apparatus that includes a discharge circuit and a control unit, which sets either a superimposable voltage or a supply completion voltage as an interruption threshold to manage the supply of electric power to target loads, ensuring that power is prioritized and distributed appropriately by interrupting or delaying supply to prevent simultaneous operation when the charge voltage falls below a certain threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the backup system supplies electric power to multiple loads simultaneously when energy is insufficient, then all loads can operate, but power distribution becomes inadequate and system reliability deteriorates
Solution Approach 1:
The patent applies local quality by assigning different voltage thresholds to different loads based on their priority levels. High-priority loads receive power at lower voltage thresholds while low-priority loads are interrupted earlier. This differential treatment ensures that limited power resources are allocated to critical functions first, maintaining system reliability even when total energy is insufficient.
Solution Approach 2:
The patent segments the power supply control into multiple priority levels with distinct interruption threshold values. Instead of treating all loads uniformly, the system divides them into categories (e.g., high priority, medium priority, low priority) and applies different voltage threshold rules to each segment. This segmentation enables appropriate power distribution across multiple loads with varying importance.
2Productivity
If the interruption threshold value is set low to allow more loads to operate, then power availability increases, but voltage instability and power quality deteriorate
Solution Approach 1:
The patent changes the voltage threshold parameter dynamically based on load priority and system state. Instead of using a single fixed threshold, the system adjusts interruption thresholds according to which loads are currently operating and their priority levels. This parameter adaptation allows the system to maintain voltage stability by preventing excessive discharge while still enabling critical loads to operate.
3Adaptability or versatility
If the system allows simultaneous operation of all loads regardless of energy levels, then operational flexibility increases, but energy depletion accelerates and duration of operation decreases
Solution Approach 1:
The patent implements preliminary action by establishing priority-based interruption thresholds before energy depletion occurs. The control unit pre-configures which loads should be interrupted at specific voltage levels, preventing excessive discharge from the outset. This proactive approach extends the backup operation duration by ensuring that critical loads maintain power supply while non-critical loads are curtailed in advance.
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 effectively manages power distribution during abnormal states, preventing power shortages and ensuring that multiple loads receive adequate power by prioritizing supply based on set voltage thresholds, thus avoiding situations where all loads operate with insufficient energy.
Implementation Method 1
a power storage unit (70) and a backup control apparatus (1)
Implementation Method 2
a discharge circuit that discharges the power storage unit (70)
Data Source
AI summary
An in-vehicle backup control apparatus includes a discharge circuit that discharges a power storage unit and a control unit that controls the discharge circuit. The control unit sets either one of a superimposable voltage or a supply completion voltage as an interruption threshold value, the superimposable voltage being set as a voltage condition of the power storage unit when electric power is supplied simultaneously to a plurality of target loads during an abnormal state, and the supply completion voltage being set in association with one of the plurality of target loads. The control unit interrupts or delays the supply of electric power to the one of the plurality of target loads to prohibit the plurality of target loads from simultaneously operating if a charge voltage of the power storage unit reaches a value less than or equal to the interruption threshold value during the abnormal state.