Telematics Control for EV Battery Discharge Safety
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Solution Overview
Problem
Electric vehicle batteries pose a risk due to high electrical potential differences, which can lead to extreme electrical currents during short circuits, especially in damaged vehicles, necessitating a safe method for discharging and recharging.
Innovation Solution
The use of telematics units in vehicles communicates with a telematics service provider to remotely control the discharging and recharging of high energy electrical power storage devices, allowing for safe power management through instructions issued by the service provider based on environmental conditions or vehicle status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electric vehicle batteries maintain high electrical potential for propulsion, then the vehicle can operate effectively, but the risk of extreme electrical current during short circuits increases
Solution Approach 1:
The system performs preliminary discharge of the battery to a low power state before allowing service activities. The telematics controller receives a service indicator and automatically discharges the battery to reduce electrical potential, preventing harmful effects during service operations while maintaining full charge during normal operation
Solution Approach 2:
The telematics controller acts as an intermediary between the battery system and service operations. It monitors service indicators, controls the discharge process, and manages the charging resumption, mediating between the high-energy battery and the service environment to prevent short circuits
2Object-affected harmful factors
If the battery is discharged to a low power state for safety, then short circuit risks are minimized, but the vehicle cannot operate until recharged
Solution Approach 1:
The system automatically initiates battery discharge upon detecting a service indicator, preparing the battery for safe service operations. This preliminary action prevents short circuit risks before they can occur during service activities
Solution Approach 2:
The system uses feedback from service indicators to trigger discharge and subsequent recharge operations. When a service indicator is received, the system discharges the battery, performs service, then automatically recharges it, creating a feedback loop that manages safety while minimizing operational disruption
3Ease of operation
If telematics control is implemented for battery management, then remote safety control is achieved, but system complexity increases
Solution Approach 1:
The telematics controller automatically monitors service indicators, triggers discharge operations, and manages recharge processes without requiring manual intervention. The system serves itself by autonomously managing the battery's charge state based on received service indicators, reducing the need for complex user interfaces or manual monitoring systems
Data Source
AI summary
Implementations of the present invention contemplate using the communicative connections between telematics units in vehicles and a telematics service provider (TSP) to facilitate discharging and recharging of high energy electrical power storage devices, e.g. batteries, in vehicles. Specifically, implementations of the present invention contemplate an entity, e.g. a TSP, located remotely from a vehicle, that issues a command to a telematics unit in the vehicle to discharge or recharge an electrical power storage device in the vehicle. In some implementations, the command to discharge the storage device is issued by the TSP or other remote entity in response to a prior transmission sent by the telematics unit in the vehicle to the TSP or other entity. In other implementations, the command to discharge or recharge the storage device issued by the TSP or remote entity is triggered by the determination that a disaster may impact the vehicle.