Vehicle Charge Control Device Delaying Suspension for Battery Heating
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Solution Overview
Problem
Existing battery charge control systems for electric vehicles face challenges in completing battery charging within the given time due to temperature drops, requiring high-capacity heaters that increase costs.
Innovation Solution
The charge control device delays the charge suspension time during timed charging when the battery is being heated, allowing for extended charging time and concurrent heating, thus avoiding the need for increased heater capacity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery is heated before charge initiation to ensure complete charging within given time, then the charging completion is guaranteed, but the heater capacity must be increased leading to higher costs
Solution Approach 1:
The system performs preliminary heating of the battery before the timed charge period starts. The control unit activates the heater in advance based on predicted charge timing, ensuring the battery reaches optimal temperature before charging begins, thus guaranteeing charging completion without requiring excessive heater capacity during the charge itself
Solution Approach 2:
The control unit dynamically adjusts the heating strategy based on real-time temperature monitoring and charge status. The system transitions from pre-heating mode to maintenance mode, and coordinates with the charge control to optimize heater operation timing, allowing reliable charging completion with reduced overall heating requirements
2Productivity
If the battery is heated during timed charge to maintain temperature, then charging efficiency is improved, but the charge power drops due to concurrent power consumption
Solution Approach 1:
The system implements periodic heating cycles during the charge period rather than continuous heating. The control unit monitors battery temperature and activates the heater only when temperature drops below threshold, allowing charge power to remain high during non-heating intervals while maintaining adequate temperature for charging efficiency
Solution Approach 2:
The system maintains continuous useful action by coordinating heater operation with charge phases. The control unit ensures heating occurs during periods when charge power can be temporarily reduced or when thermal mass already provides sufficient temperature, maintaining overall charging efficiency without sustained power loss
3Quantity of substance
If the charge suspension time is delayed to compensate for power drop during heating, then the charge amount is sufficient, but the charge time duration is extended
Solution Approach 1:
By pre-heating the battery before the timed charge period, the system reduces or eliminates the need to delay charge suspension time. The battery enters the charge period at optimal temperature, maintaining charging efficiency throughout the scheduled period without requiring extended duration to compensate for power losses
Solution Approach 2:
The control unit continuously monitors battery temperature, charge power consumption, and charge amount. Based on this feedback, the system dynamically adjusts heater operation timing and intensity, and modifies charge suspension timing to achieve sufficient charge amount while minimizing unnecessary time extensions
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 approach ensures complete battery charging without increasing heater capacity, preventing power shortfalls and maintaining charging efficiency while reducing costs by allowing heating during timed charging.
Implementation Method 1
a battery heater (15) for heating the battery (11)
Data Source
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AI summary
A charge suspension time is delayed if a battery is being heated when carrying out a timed charge in a charge time slot specified by a user via a timed charge reservation means. This enables the battery to be charged to a target charge amount without increasing a required capacity of a battery heater.