Improvements in EV Battery Charging Station Infrastructure

Charging system for batteries in electric vehicles that provides efficient cooling during fast charging to prevent overheating. The system has a separate cooling loop with a refrigeration module, pump, and medium container. The battery connects to the loop via an interface. When charging, the controller monitors battery parameters and activates the loop to circulate coolant through the battery. This prevents temperature spikes during high-current charging. It allows efficient cooling without a large water tank or piping inside the vehicle.

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A charging control device for electric vehicles that efficiently charges the battery at low temperatures by circulating power between multiple parallel chargers connected to the battery. This prevents overcharging and extends battery life in cold weather. The control algorithm switches to a power circulation mode when the battery temperature is low to balance charging between the chargers and prevent hotspots. This allows all chargers to contribute to charging instead of relying solely on one charger, preventing overcharging and prolonging battery life at low temperatures.

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A new energy charging system and charging control method for electric vehicles that improves charging efficiency and safety. The charging system dynamically adjusts voltage and current during charging based on real-time monitoring of input, output, temperature, etc. It calculates mismatch between target and actual electrical parameters and stops charging if excessive. This adaptive charging adapts to specific battery and environmental conditions. The system also has temperature sensors and alarms to prevent overheating. The charging system can communicate through IoT and cloud platforms.

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Selective cooling of charging cables for electric vehicles to improve charging efficiency and reduce charging times. The cooling system circulates coolant through each charging cable and connector individually, allowing temperature control of each component. A processor compares the cable temperature to a threshold and selectively circulates coolant based on the comparison. This enables targeted cooling of cables and connectors rather than supplying coolant to all cables during charging. It reduces cooling capacity needs compared to circulating coolant through all cables. A central chiller can provide coolant for multiple chargers, improving efficiency for multi-charger stations.

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Optimizing low-temperature charging of electric vehicle batteries using an onboard charger and a heating system to maximize charge acceptance at cold temperatures. The vehicle control unit determines the optimal power distribution between battery charging and battery heating based on battery temperature. It sends charging power requests to the charger and heating power requests to the heating system. This allows targeted heating to raise battery temperature before charging, enabling higher charge rates at low temps.

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Battery temperature control system and method for optimizing vehicle-to-vehicle (V2V) charging speed by preconditioning battery temperature. The system calculates the expected charging time based on vehicle state and V2V charger output. If expected time exceeds actual charging time, it activates a battery heater to raise temperature before charging. This avoids sub-optimal charging in cold weather. The vehicle controller coordinates battery temperature control with the V2V charging service schedule.

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A system for managing EV charging stations in a fair and efficient way even when demand exceeds capacity. It uses a controller to queue and prioritize charging requests from drivers and dynamically enable/disable chargers to avoid exceeding power limits. The controller balances demand, prevents overloads, and optimizes charging using techniques like load shedding during peak events.

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Charging electric vehicles without plugging in using charging stations that can be positioned above the vehicle and lowered onto contact plates on the vehicle's roof to establish an electrical connection. The stations have adjustable arms to align with the vehicle and collector braces with conductive pads to contact the vehicle's charge points. This allows automated charging of electric vehicles when parked under the stations.

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A liquid cooled charging cable for electric vehicle charging stations that allows higher power charging than air cooled cables without becoming too large and heavy. The cable contains a coolant that is pumped around the conductors to cool them and prevent overheating at high charging currents.

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Battery swapping system for electric vehicles that enables quick and convenient battery exchange to avoid downtime from charging. Electric vehicles drive into a battery swap station and have their depleted battery quickly exchanged with a fully charged one. The depleted batteries are then charged for future swaps. This allows EVs to have instant access to charged batteries without waiting for charging, reducing downtime. Multiple swap stations can be placed around an area to extend EV range. The swapping system can be used by fleet vehicles like delivery vans or individuals who subscribe to the service.

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Passive cooling system for autonomous vehicle charging components to dissipate heat generated during charging without adding additional active cooling components. It uses a refrigerant-filled heat exchanger that contacts the charging electronics and coil. Heat transfers to the refrigerant which convectively flows to a condenser cooled by the vehicle's existing radiator fan. The refrigerant condenses and flows back to the heat exchanger.

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Battery system and charging method for vehicles like trains to prevent battery degradation and enable efficient warm-up at low temperatures. The charging rate is dynamically adjusted based on battery temperature and state of charge. When the battery temperature is above a threshold, the charging rate can be higher and the state of charge can be lower than normal to allow faster warming without overvoltage issues. This avoids prolonged warming times at low temperatures that could delay schedules. It also prevents excessive charging in mid-SOC where deterioration is higher. This balances warm-up, deterioration, and capacity constraints.

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Smart charging system for electric vehicles that optimizes charging times and rates to reduce strain on power grids and allows charging to fit better with renewable generation. The charger controllers can prioritize charging based on user-entered end times, adjust charge rates, start/stop charging, and communicate with grid controllers.

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A method for charging an electric vehicle battery using external power sources while maintaining battery temperature. The method involves heating the battery during charging if it's below a reference temperature. This is done by intermittently operating a temperature raising device while keeping the battery charge within a predetermined range. If the supplied power is less than consumption, the battery charge is maintained while intermittently heating. If the power is higher than consumption, the battery charge is allowed to drop within range while heating continuously. This allows charging at lower temperatures without degrading the battery.

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Battery charging method and vehicle electrical system that allows efficient and safe charging of low-state-of-charge (SOC) batteries in low temperature environments. The method involves switching the operating state of a current control unit connected between the battery and charging source based on battery temperature. When battery temperature is below a threshold, the control unit disconnects current flow to prevent battery damage. When temperature reaches the threshold, it allows normal charging. This allows requesting heating current without changing protocol and stops heating once warmed.

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Sharing charging stations between connected vehicles to increase availability while reducing costs. A single power circuit is routed to multiple charging stations or connectors. A controller directs the charging current to one connector at a time in a round-robin fashion. It charges the vehicle connected to that connector for a set time before switching to the next connector and vehicle. If a connector has no vehicle or a charged vehicle, it bypasses that connector.

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Battery charging method and vehicle electrical system for safely and efficiently charging low-state-of-charge (SOC) batteries in cold environments. The charging method involves using a current control unit with a reversible semiconductor device. When the battery temperature is below a threshold, the control unit blocks current flow to heat the battery using the charging power supply. When temperature reaches the threshold, the control unit allows charging current. This prevents cold battery damage and enables cold charging without changing communication protocols.

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Electric vehicle charging system that optimizes charging efficiency and prevents battery damage in cold conditions. The charging station calculates the charging rate based on power and battery info. If the rate is too slow or battery temp is low, it requests battery preheating from the vehicle before charging. This avoids inefficient charging in cold temps and prevents battery issues. The station can also request checking the charger or vehicle power supply if slow charging persists but temp is normal.

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Heat exchange system for electric vehicle batteries that reduces the risk of thermal runaway during fast charging. The system uses internal cooling sources like water or air conditioning, along with an external cooling source, to cool the battery pack. The battery pack has an internal heat exchanger with separate chambers connected to the internal and external cooling sources. The internal cooling source cools the battery first, then the external source provides additional cooling. This dual cooling strategy prevents overheating during charging by leveraging both internal and external sources. The system intelligently manages the cooling based on battery temperature to balance power density and safety.

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Battery charging system and control device for efficiently charging a battery in cold temperatures using a heating system with low power consumption. The charging system has a flow path with a heat medium that circulates between the battery and the charger to warm them both. A separate heater heats the heat medium. A temperature sensor detects battery temperature. The control logic adjusts charging power and heater operation based on battery temperature to optimize charging efficiency in cold conditions.

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