Electrified Vehicle Auxiliary Battery for Self-Propulsion During Battery Swap
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Solution Overview
Problem
Electrified vehicles cannot self-propel if no power is supplied from the battery to the vehicle driving unit during battery replacement operations, especially in situations like disasters where external factors disrupt the process.
Innovation Solution
Incorporating an auxiliary battery that can supply power to the driving unit, along with a control unit, input device, and switching device to manage power distribution and user input for initiating movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrified vehicle relies solely on the main battery for power supply to the driving unit, then the battery replacement operation can be performed with simpler system configuration, but the vehicle cannot self-propel during battery replacement or evacuation
Solution Approach 1:
The auxiliary battery is pre-installed in the vehicle body, ready to provide power before needed. This preliminary preparation ensures that when the main battery is being replaced or when evacuation is required, the vehicle can immediately access power from the auxiliary battery without system reconfiguration, thus improving reliability while maintaining relatively simple system complexity.
Solution Approach 2:
The auxiliary battery acts as an intermediary power source between the main battery and the driving unit. When the main battery is unavailable or insufficient, the auxiliary battery mediates by providing the necessary power to the driving unit through the power supply system, enabling vehicle self-propulsion during critical periods without requiring direct connection to external power sources.
2Reliability
If the battery replacement operation is interrupted due to external factors or system abnormalities, then the replacement process can be halted for safety, but the vehicle remains unable to move without complete battery replacement
Solution Approach 1:
The auxiliary battery is pre-configured to provide power during battery replacement operations and evacuation scenarios. This preliminary power availability allows the vehicle to be evacuated or repositioned even when the main battery replacement is incomplete or interrupted, improving evacuation capability without significantly complicating the replacement operation procedure.
Solution Approach 2:
The auxiliary battery serves as a cushioning power source that compensates for potential failures or interruptions during battery replacement. By having this backup power source available beforehand, the system can handle abnormal situations (such as replacement interruption or vehicle evacuation needs) without compromising the simplicity of the normal replacement operation, as the auxiliary battery only activates when needed.
3Ease of operation
If the auxiliary battery is used to supply power to the driving unit, then the vehicle can self-propel during battery replacement, but the power management system becomes more complex
Solution Approach 1:
The auxiliary battery is designed with multi-functionality to serve multiple purposes: it can supply power to the driving unit during battery replacement, provide power during vehicle evacuation, and support other vehicle systems when needed. This universal power supply capability improves vehicle mobility during replacement without requiring separate systems for each function, thereby limiting the increase in power distribution system complexity.
Solution Approach 2:
The power supply system including the auxiliary battery acts as an intermediary layer between the main battery and the driving unit. This intermediary structure allows seamless power transition and management, enabling the vehicle to access power from either source as needed. The intermediary power management system, while adding some complexity, provides a unified control interface that simplifies overall power distribution rather than creating separate complex systems.
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
Enables the electrified vehicle to self-propel even without power from the main battery, allowing for safe evacuation from the battery replacement station during incomplete replacements or system abnormalities.
Implementation Method 1
an auxiliary battery that is configured to be able to supply power to the driving unit
Data Source
AI summary
An electrified vehicle includes a first battery, a driving unit, and an auxiliary battery configured to be capable of supplying power to the driving unit. The first battery mounted on electrified vehicle can be replaced with a second battery by a battery replacement station provided outside electrified vehicle. Electrified vehicle supplies electric power from the auxiliary battery to the driving unit, thereby enabling the driving unit to be driven.