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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Intelligent charging control for batteries in low temperature environments to extend cycle life and enable fast charging while preventing overcharge. The charging system adjusts the charging current based on battery temperature. Below a threshold, it charges slowly to avoid overcharge. Above the threshold, it gradually ramps up the current. If the battery is too cold, it also heats the battery to raise the temperature for faster charging. The charging current is controlled using pulse width modulation (PWM).

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Optimizing charging time and temperature management in electric vehicles by dynamically controlling the charging power and cooling system. The method involves calculating the time it takes for battery temperature to reach protection limits during charging based on heating power and cooling capacity. If it's less than total charging time, increase cooling. If max cooling is on, reduce charging current to avoid over-temp limits. This prevents rapid temperature rises and voltage drops.

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Electric vehicle charging system that uses temperature sensors to improve charging safety and reliability. The charging system has multiple temperature sensors along the cooling circuit between the charger and connector. The control unit monitors temperature differences between sensors to detect issues like pump failures or wrong cable types. It also uses absolute sensor readings to limit charging current. This allows faster, more accurate temperature monitoring compared to slow temperature sensors.

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A charging control method for lithium iron phosphate batteries in electric vehicles that balances charge time and safety. The method involves a multi-step charging process with gradually increasing charge currents. The steps are: 1. Constant current charging at 0.1C for 30 minutes to 1% state 2. Constant current charging at 0.2C for 30 minutes 3. Constant current charging at 0.3C for 30 minutes 4. Constant current charging at 0.4C for 30 minutes 5. Constant current charging at 0.5C until fully charged The gradual increase in charge currents allows the battery to safely absorb higher currents as it charges without overcharging or damage. The initial lower currents also shorten charge times compared to a single constant current charge.

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Optimizing charging efficiency and battery life in cold weather by preheating the battery before charging. The battery charger can be used to generate heat without charging the battery. This heat is transferred to the battery to warm it up. Once at a suitable temperature for charging, the battery can be charged. The charger can also be used to heat other vehicle systems. The goal is to improve charging efficiency and prevent damage from charging a cold battery.

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Thermal charging system for electric vehicles that allows faster charging of battery modules by heating them during charging. The system uses a fluid conduit with an isolated electrical wire routed through the vehicle. A fluid pumping system heats the fluid to around 60°C and pumps it through the conduit to heat the battery module during charging. This reduces lithium plating and improves charging rates compared to traditional fast charging. After charging, the system cools the module to prevent solid electrolyte interfacial layer growth.

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Electric vehicle battery pack fast charging system that uses external thermal management to quickly heat and cool the battery pack during charging. The system leverages an external thermal management module connected to a compression heat pump. It rapidly heats the battery pack before charging to adapt it to higher rates, then cools it afterwards to meet safety requirements. This external thermal management allows faster, more efficient charging by leveraging external resources rather than relying solely on in-vehicle systems.

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A control system for vehicle charging that allows manual adjustment of the charging limit for prolonging battery life and reducing charging time. The system has a vehicle controller, coarse adjustment button, fine adjustment button, battery management module, and charging pile. By adding the adjustments from the coarse and fine buttons, the user can set a custom charging limit for the battery. This prevents overcharging and allows shallow charging to avoid issues like crystal collapse and lithium precipitation.

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Battery temperature control system for electric vehicles that improves charging safety and efficiency. The system has a central control module connected to the charging station and temperature control unit. It adjusts the battery temperature during charging by regulating the flow and temperature of the cooling liquid. The control module collects battery data and dynamically balances heating and cooling based on real-time charging power. This allows precise temperature regulation while charging. The central control also coordinates temperature adjustment across multiple vehicles. The centralized temperature control improves charging safety and efficiency compared to vehicles individually regulating battery temperature.

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Charging electric vehicles in cold environments without battery temperature limitations by providing external cooling and heating. The charging station has a high-power charging unit and a separate cooling unit with tanks and a heat pump. During peak charging, the station supplies cooling from the external unit to the vehicle's battery while providing high power. After peak, it switches to lower power and uses the heat pump to heat the external coolant and provide warmer cooling to the vehicle. This allows fast charging without overheating the battery in cold conditions. The station also has two charging units for parallel charging.

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A charging device and battery warming method for electric vehicles that can warm the battery without using battery power during charging. The charging device has a heat transfer path to move heat from the charger to the battery using coolant. When the battery temperature is low, the charger increases current flow to generate more heat and warm the battery. This avoids using battery power to warm the battery during charging.

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Electric vehicle (EV) charging thermal management system to improve charging efficiency by maintaining consistent battery temperature during rapid charging. The system uses a cooling line with refrigerant and compressed air circulation to cool the charging cable and battery. The cooling line contacts the refrigerant circulation line, and a heat pump compresses air to cool it further. A vortex tube at the battery end further cools the fluid. This provides multi-stage cooling to prevent battery temperature spikes during fast charging. The system also includes a temperature sensor and maintainer to adjust battery temperature.

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Electric vehicle charging system that can quickly charge batteries at low temperatures by heating them first. The system uses contactless electromagnetic energy transfer to heat the battery before charging to avoid degradation issues at cold temperatures. Sensors monitor battery temperature. When below a threshold, the system sends magnetic energy to an onboard converter to heat the battery before starting fast charging. This prevents performance degradation and safety issues at low temperatures.

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AC charging method and system for electric vehicles that improves charging efficiency and safety by dynamically adjusting charging current based on temperature conditions. The method involves selecting charging modes like "standard" or "healthy" through the vehicle's infotainment system. In "healthy" mode, the charging current is adjusted based on ambient temperature, battery temperature, and charger temperature to prevent excessive heating and cooling system load. This helps maintain optimal charging efficiency and battery health while mitigating temperature rise issues.

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Temperature control system for energy storage charging to improve charging/discharging performance, prolong battery life, and enhance safety. The system uses cooling and heating devices to maintain optimal battery temperature during charging/discharging. It has a controller connected to temperature sensors, a liquid cooling component, a flexible heating device, and the battery. The controller monitors battery temperature and switches between cooling and heating modes based on conditions. When battery temperature is too high, it activates cooling. When battery temperature is too low, it activates heating. This prevents excessive temperature extremes that degrade battery performance and longevity.

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Controlling vehicle charging in cold environments to improve charging time and reduce battery degradation. The method involves preheating the battery before charging to a specific temperature. This is done by limiting the charging current to a level that allows heating the battery without overloading the onboard charger. The battery temperature is monitored and valves are opened to regulate air conditioning and battery heating as needed. Once the battery is preheated, normal slow charging can proceed. This prevents battery performance degradation in cold temperatures by avoiding low charge acceptance rates.

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Cooling method for power batteries during charging that uses both the vehicle's battery cooling system and the charging pile's cooling system to prevent overheating and enable higher charge rates. The method involves detecting battery state during charging, like cell temperatures, and selectively activating the battery cooling system, charging cooling system, or both based on the detected state. This allows maintaining battery temperature within safe limits, avoiding power reductions due to overheating, and enabling high rate charging.

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Battery charging system for lithium-ion batteries that enables safe charging at low temperatures without self-discharge. The system uses internal temperature and electrical parameter monitoring to determine if charging is safe at low temperatures. If the temperature is below a threshold, it heats the battery instead of charging. If the temperature is above the threshold and stable electrical parameters are met, it charges. This prevents battery damage and safety issues when charging at very low temperatures.

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Temperature control system and method for charging electric vehicles and other devices using an energy storage battery to improve charging performance, battery life, and safety. The system uses a liquid cooling assembly and flexible heating device on the battery. A temperature sensor monitors battery temperatures. If the battery gets too cold for optimal charging, the system activates the heating device. If temperatures get too high during charging, it activates liquid cooling. This prevents cold charging degradation and high temp damage. The system also manages cooling/heating during discharging.

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Charging system for electric vehicles that provides better cooling for the vehicle's battery during rapid charging and when the air conditioning is being used for heating. It uses an external cooling device with an external refrigerant loop connected to the vehicle's battery heat exchanger. This allows independent cooling of the battery when the air conditioning can't be used during heat pump heating. The controller manages both the charger and external cooling device to optimize charging and battery temperature.

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High-rate charging system for electric vehicles that prevents overheating and cooling issues during fast charging. The system uses a battery pack, controller, DC charger, fuel tank, heater, cooler, and oil pump. It intelligently controls the battery temperature during charging to improve thermal balance and prevent damage. The controller monitors battery conditions and adjusts cooling/heating as needed. It can also communicate remotely to optimize charging parameters. The system uses a fast computer, wireless module, and industrial computer for remote monitoring.

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Battery temperature control system for electric vehicles that avoids discharging the battery pack to warm it up or cool it down before charging in extreme temperatures. Instead, it uses the charging station as a power source to heat or cool the battery pack. The system judges if heating or cooling is needed based on battery temperature before charging. In slow charging, the station's AC power is converted to DC and used to heat/cool through the thermal management system. In fast charging, DC from the station directly powers heating/cooling. This eliminates discharging for thermal regulation and reduces time, safety risks, and costs compared to separate battery power for the thermal system.

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Charging energy management system for electric vehicles that improves battery life and driving range. It involves using the charging pile's power to heat/cool the battery during charging instead of depleting the battery itself. The system has an electrical component that connects to the charging station and detects battery temperature. It uses that data to determine if the battery needs heating/cooling during charging. If so, it sends commands to the thermal management system to adjust the battery temperature. This prevents excessive heating/cooling by the battery itself, which degrades performance. Instead, the charging station provides the energy to maintain optimal battery temperature during charging.

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Battery pack charging thermal management for electric vehicles that allows charging at high and low temperatures without separate battery heaters. The method involves coordinated control by the vehicle controller and battery management system to manage charging temperatures based on pack state and charging mode. During slow charging, the controller heats the pack if needed. For fast charging, it waits for pile detection. If hot, it preconditions. If cold, it heats. After charging, it switches back to normal mode. This leverages existing vehicle heaters rather than adding separate battery heaters.

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Charging device that can automatically adjust charging parameters based on the battery temperature to prevent overheating and damage. The device has an acquisition unit to measure battery temperature, a charging section, a first heat dissipation unit, and a control unit. When the battery temperature exceeds a threshold, charging stops and the heat dissipation unit is activated. If temperature is between thresholds, charging continues with reduced power while dissipating heat. If temperature is below a threshold, charging continues with full power. A heating unit can also be used to warm cold batteries. The device also has a secondary heat dissipation unit for itself when charging generates excessive heat.

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Charging control method and device for electric vehicle batteries that accurately compensates for heating power during charging in cold temperatures. The method involves determining a compensation current for the heating element based on the real-time voltage and temperature of the heating element during charging. This allows adjusting the compensation current in real-time to match the changing heating power requirements. By compensating accurately for the heating power instead of using a constant value, it avoids inaccuracies in charging power due to changing heating conditions.

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A charging station for electric vehicles with a cost-efficient design and simplified charging circuitry compared to traditional charging stations. The charging station uses battery packs that are individually controlled to optimize charging voltage for the connected electric vehicle. The battery packs are connected in series and have switches to route power. A control unit monitors battery state and adjusts the switches to set the input voltage to match the EV's needs. This avoids complex power electronics.

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Adaptive energy-saving time-saving control method for electric vehicle charging to improve battery charging efficiency and reduce charging time and energy consumption. The method involves dynamically controlling charging parameters based on the battery temperature and charger capacity. When charging, the battery management system communicates with the charger to obtain the maximum allowable charging current. If the battery temperature is below a threshold, charging heating is turned on to raise the temperature. But if the charger's maximum current is lower than the battery's allowable charging rate, heating is turned off to avoid wasting power. This prevents overheating and prolonged charging when the battery can't fully utilize the charger's maximum current.

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Charging system for electric vehicles that improves the accuracy of estimating charging completion time. The system keeps the battery temperature above a threshold during charging using an onboard heater. This eliminates the need to account for temperature adjustment power when estimating completion time. Instead, the estimated completion time is derived based on the estimated permitted external power and the estimated heater power required to maintain the battery temperature.

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Optimizing the charging current for electric vehicles based on battery state of charge and chemistry to extend battery life. The method involves dynamically determining the optimal charge current based on the battery's current state of charge, temperature, and chemistry. This helps to minimize the impact of charging on battery life and performance by avoiding excessive current levels that can increase temperature and degrade the battery.

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