Replaceable EV Battery Pack Position Detection for Theft Prevention
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Solution Overview
Problem
Removable vehicle batteries in electrified vehicles are prone to theft due to their replaceable nature, and existing anti-theft measures fail to efficiently track and locate the position of stolen batteries, and existing systems fail to efficiently share the positions of removable batteries, and existing communication systems are cumbersome, increasing the number of terminals, which increases the difficulty of replacing them.
Innovation Solution
The solution involves using a replaceable battery pack with a communication terminal capable of communicating with an electrified vehicle, and the solution is to provide an electrified vehicle with a plurality of antennas arranged in the vehicle cabin, including: a plurality of antennas arranged in the vehicle cabin; and a control device that specifies an arrangement position of a specific replaceable battery pack, from among the replaceable battery packs, connected to the electrified vehicle via a battery terminal base for connecting at least one of the replaceable battery packs to the electrified vehicle, based on a radio wave intensity of a radio wave emitted from a communication unit provided in each of the replaceable battery packs when the radio wave is detected by the antennas from a base position of the battery terminal base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communication terminal is provided in each replaceable battery pack to detect theft, then theft detection capability is improved, but the number of terminals increases and replacement work becomes troublesome
Solution Approach 1:
The patent replaces the mechanical communication cord connection with a radio wave-based detection system. Instead of requiring physical connection through communication terminals, the system uses antennas to detect radio waves emitted by each battery pack, thereby eliminating the need for additional communication terminals while maintaining theft detection capability
Solution Approach 2:
The patent introduces radio waves as an intermediary medium to transmit information between the battery packs and the vehicle. The radio waves serve as a mediator that carries identification signals from the battery packs to the antennas, enabling theft detection without direct physical connection through terminals
2Reliability
If communication cord connection is required for theft detection, then theft detection is possible, but battery replacement work becomes more troublesome due to repeated insertion and extraction
Solution Approach 1:
The patent replaces the mechanical operation of inserting and extracting communication cords with a wireless radio wave-based detection system. The antennas detect radio waves emitted by the battery packs automatically, eliminating the need for manual connection operations and simplifying battery replacement work
Solution Approach 2:
The battery packs automatically emit radio waves for identification without requiring manual connection operations. The system performs self-service by automatically detecting the presence and identification of battery packs through radio wave transmission, eliminating the need for users to perform insertion and extraction operations
3Device complexity
If positions of replaceable battery packs are not shared with the electrified vehicle, then terminal complexity is reduced, but it becomes difficult to specify the position of stolen battery packs
Solution Approach 1:
The patent replaces physical terminal connections with radio wave-based position detection. The antennas detect radio waves from each battery pack to determine its position, thereby maintaining position information without requiring additional communication terminals
Solution Approach 2:
The system establishes a feedback loop where battery packs continuously emit radio waves containing their identification information, and the antennas detect these signals to determine battery pack positions. This continuous feedback mechanism ensures position information is always available without increasing terminal complexity
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 configuration allows for the positions of replaceable battery packs to be shared with the vehicle side while suppressing an increase in the number of terminals, thereby improving the workability of battery replacement and preventing theft by accurately identifying the battery's position.
Implementation Method 1
a control device that specifies an arrangement position of a specific replaceable battery pack, from among the replaceable battery packs, connected to the electrified vehicle via a battery terminal base for connecting at least one of the replaceable battery packs to the electrified vehicle, based on a radio wave intensity of a radio wave emitted from a communication unit provided in each of the replaceable battery packs when the radio wave is detected by the antennas from a base position of the battery terminal base
Data Source
AI summary
An electrified vehicle in which a plurality of replaceable battery packs are arranged in a vehicle cabin, comprising: a plurality of antennas arranged in the vehicle cabin; and a control device that, when the plurality of antennas detect a radio wave transmitted by a communication device provided in each of the plurality of replaceable battery packs from a pedestal position of a battery terminal base for connecting at least one of the plurality of replaceable battery packs to electrified vehicle, identifies an arrangement position of a particular replaceable battery pack connected to electrified vehicle via the battery terminal base from among the plurality of replaceable battery packs based on a radio wave strength of the radio wave.