Thermal Regulation Techniques for EV Batteries while Charging

Electrified vehicle with temperature control for storage battery, comprising a temperature adjustment device and a control device. The control device sets a target temperature for the battery at the start of charging based on the maximum output of the external power supply, and controls the temperature adjustment device to achieve the target temperature. The target temperature is set lower for high-output charging systems to prevent overheating.

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Optimally charging an electric vehicle battery pack at a charging station while preventing overheating. The charging station extracts the battery's state-of-health and determines an optimal charging schedule based on allotted time and voltage. During charging, it monitors battery temperature. If it exceeds a threshold, the temperature management system activates cooling to prevent damage. This coordinated charging and temperature control ensures optimal charging without overheating.

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A battery pack for electric vehicles that integrates external charging and cooling capabilities. The pack features a charging port with a built-in cooling interface that connects to an external cooling device, enabling simultaneous charging and cooling during fast DC charging. The cooling circuit is controlled by isolating devices that can switch between internal and external cooling modes, allowing the pack to optimize cooling based on charging conditions.

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A system and method for battery conditioning of a vehicle that executes a battery temperature raising function or a battery cooling function a designated time before the vehicle arrives at a charging station in consideration of predicted arrival time information to the charging station through a navigation system of the vehicle and factors, such as the temperature of the battery, a temperature outside the vehicle, etc., so as to maximize charging performance of the battery and to greatly shorten the charging time of the battery.

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A method for controlling a vehicle battery temperature to optimize charging efficiency. The method determines a charging time point based on driving patterns and environment, calculates the battery's state of charge at that time, and adjusts the temperature to an optimal level for charging. The optimal temperature is determined from a charging temperature map that correlates state of charge, charging temperature, and charging efficiency. The temperature control is initiated at a calculated time point based on the battery's temperature change pattern and target temperature.

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Using temperature data to protect battery health during bidirectional charging of electric vehicles, including revenue generating and cost saving activities. The system monitors vehicle battery temperature and building load conditions to determine optimal charging strategies, preventing thermal stress and degradation during peak charging periods. By analyzing temperature and load data, the system optimizes charging schedules and power levels to maintain battery health, ensuring optimal performance during both charging and discharging operations.

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A method for controlling the charging process of an electrical energy storage device, a charging device, and a system having an electrified vehicle and a charging device. The method includes transferring electrical energy between the charging device and the energy storage device, transferring thermal energy between the temperature control systems of the charging device and the energy storage device, obtaining charging progress information, and controlling the temperature of the cooling medium in the temperature control systems based on the charging progress information.

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Automatically pre-cooling an electric vehicle's battery during charging to prevent overheating. The system detects charging station arrival and optimizes battery cooling by gradually lowering the temperature to the charging station's ambient temperature, rather than immediately pre-cooling the battery. This approach enables precise temperature control while minimizing energy consumption during charging.

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Charging technique for electric vehicles that shortens charging time and reduces heat generation while preventing battery overheating during high power charging. The technique involves dynamically adjusting the charging current based on the battery temperature and cooling capability during charging. The goal is to balance charging speed and heat dissipation. The charging current starts at maximum to quickly charge the battery, but if the temperature rises too fast, the current is reduced to avoid overheating. By dynamically optimizing the charging current based on battery temperature and cooling capacity, the charging time is shortened as much as possible without overheating the battery.

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System and method for charging a battery, particularly for electric and hybrid vehicles, that enables full charging at low temperatures by actively managing battery temperature. The system includes a battery management system that monitors battery state and temperature, estimates temperature increase during charging, and determines if full charging is achievable. If not, it calculates discharging time to reach a temperature where full charging is possible, and then estimates the subsequent charging time. The system compares these times to determine the optimal charging strategy.

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A vehicle with improved battery charging and warming efficiency. It uses intelligent charging control that balances charging power and battery temperature. The vehicle warms the battery during charging if the temperature is below a lower threshold, but stops warming above the upper threshold. This prevents unnecessary warming when it's already warm. The charging power also ramps down as temperature rises. By coordinating warming and power reduction, it allows charging while warming if needed, then reduces power as temperature rises to prevent overcharging.

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Thermal management system for electric vehicle batteries that uses adaptive cooling to improve battery life and charging efficiency. The system has a chiller, radiator, and coolant circuit connecting the battery and radiator. It also has a grille shutter assembly and fan near the radiator. The controller adjusts the shutter size and fan speed based on battery temperature, ambient air temperature, and charging status to optimize cooling when needed. This adaptive cooling allows active thermal management without fixed cooling components like compressors.

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Predictive charging system for electric vehicles that optimizes battery management for fast charging. The system identifies impending fast charging events and dynamically adjusts the battery management system (BMS) temperature profile to ensure optimal performance during these events. When a fast charging event is predicted, the system raises the BMS temperature to the standard operating temperature, while maintaining the standard temperature profile for non-fast charging events. This enables efficient fast charging while preserving battery health.

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A vehicle system for managing thermal conditions during charging and discharging of a power storage device. The system includes a temperature sensor, a power information obtaining unit, and a communicating unit that transmit signals to a charger to request thermal management when the connection unit temperature exceeds a threshold based on the charging/discharging power level. The system can also include a thermal management device that performs thermal management based on the power level and temperature conditions.

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A battery management system (BMS) that prevents battery cell degradation during rapid charging by predicting and controlling battery temperature based on state of charge (SOC) and voltage. The system calculates a temperature change rate for each SOC increment and uses this relationship to determine the optimal charging current that maintains the battery within a safe temperature range.

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A storage battery device for vehicles that controls battery cell temperature to optimize charging and discharging performance across a wide state of charge (SOC) range. The device includes a battery management unit that monitors cell voltage and temperature, and a temperature control system that adjusts the temperature of a medium supplied to the battery cells. The temperature control system maintains an internal resistance value within a predetermined range, enabling efficient charging and discharging even at low temperatures or high SOC levels.

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Battery management system for naturally-cooled battery systems that dynamically adjusts charging/discharging current based on temperature rise estimates to prevent overheating and minimize downtime. The system continuously monitors battery temperature, current, and time window to predict temperature increases and selects optimal charging/discharging currents to maintain safe operating temperatures.

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Intelligent control of lithium-ion batteries in electric vehicles to manage temperature for improved performance and longevity. The control involves predicting battery temperature based on driving patterns, current, voltage, etc. Then guiding temperature trajectory through battery parameter setpoints like charging/discharging rates. If predicted temperature exceeds thresholds, de-rate to reduce heat generation. If below, re-rate to normal operation. This prevents overheating without full deactivation. It balances efficiency vs longevity by adaptive control vs fixed deactivation.

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A thermal management system for electric vehicles that maintains battery temperature within a predetermined range during charging, comprising an internal thermal management unit and an external thermal management unit in fluid communication with the battery. The system prevents thermal runaway and extends battery life by controlling temperature during charging, particularly when using high-power charging sources.

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A battery control system that optimizes charge/discharge restrictions based on battery temperature history. The system detects current, voltage, and temperature, and records temperature history. It restricts charge/discharge current in low-temperature states based on the recorded history, with restrictions easing as temperature rises. The system can impose multiple levels of restriction based on temperature thresholds and time durations.

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Optimizing battery performance during fast charging by pre-conditioning the battery temperature. The technique involves heating the battery above a lower threshold before charging if it's below the upper threshold, and cooling if above the upper threshold during normal driving. This allows fast charging at higher rates without degradation. It balances avoiding cooling during normal driving to prevent waste, but also not exceeding the upper threshold. By pre-conditioning the battery temperature, it can be charged faster and more efficiently.

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Preemptive cooling system for electric vehicle traction batteries to prevent overheating during DC Fast Charging. The system detects an impending DCFC event based on GPS, navigation, or battery state data, and activates the battery cooling system before arrival at the charging station. The cooling is inhibited if the expected charging duration is below a predetermined threshold, which is dynamically calculated based on battery temperature, state of charge, ambient conditions, and cabin climate.

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A method of operating a battery in an electrically powered vehicle that improves thermal management by pre-cooling the battery based on location information and power requirements, rather than solely relying on temperature sensors. The method detects location information and power requirements to anticipate thermal loading, and then initiates pre-cooling to maintain optimal battery temperature before charging or discharging events. This approach addresses thermal lag and resistance within the battery, enabling more effective thermal management and extending battery lifespan.

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A method for optimizing battery temperature regulation in electric and hybrid vehicles by dynamically adjusting the trigger temperature for cooling or heating based on driving conditions. The method involves comparing the actual gradient of battery temperature versus state of charge (SOC) to a target gradient. If the actual gradient is lower than the target, indicating slow charge or discharge, the trigger temperature is increased to delay cooling or heating. This prevents unnecessary thermal management when the battery is not being stressed. If the actual gradient is higher than the target, indicating fast charge or discharge, the trigger temperature is decreased to quicken cooling or heating. This prevents excessive battery heat buildup during fast cycling. The trigger temperature is adjusted dynamically based on the actual battery usage patterns to optimize temperature regulation without over-cooling or under-heating.

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A method and system for controlling battery charge and discharge in hybrid vehicles to increase charging power and enhance fuel efficiency. The system adjusts charging power based on battery temperature and state of charge, and controls charge and discharge operations accordingly. The method includes detecting battery temperature, determining maximum charging and discharging power values based on temperature and state of charge, and resetting charging power limits based on the lowest state of charge.

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A battery charging system for electric vehicles that dynamically controls temperature conditioning based on the vehicle's operating mode. The system includes a battery pack, a temperature conditioning passage, and two fluid supply units: an inner unit that circulates a fluid based on battery pack state, and an outer unit that supplies a fluid during charging. The system determines the operating mode and adjusts the fluid circulation path and temperature setpoints accordingly to optimize battery performance and longevity.

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A high-power DC electric supply roadside charging station for electric vehicles that combines rapid charging with onboard battery cooling to prevent overheating during high-rate charging. The station delivers up to 300 kW of power and includes a coolant supply system to maintain battery temperature during charging, enabling fast charging without compromising battery safety or lifespan.

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Optimizing thermal management of vehicle battery packs during charging and discharging cycles to improve energy efficiency. The method involves selecting the most appropriate thermal conditioning action based on the specific driving route. This allows tailoring the battery cooling or heating to match the expected load and temperature extremes encountered on that route. By dynamically adapting the thermal conditioning strategy to match the driving conditions, it avoids over-cooling or over-heating the battery for average scenarios.

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A method and system for controlling the state-of-charge (SOC) of a vehicle battery, particularly high-voltage batteries used in hybrid electric vehicles (HEVs), by dynamically adjusting the desired SOC range based on battery temperature. The system uses temperature predictions or real-time readings to determine the optimal SOC limits, which are then enforced through charging and discharging control. This approach enables maintaining the battery within a temperature-dependent SOC range, thereby optimizing battery performance, lifespan, and vehicle operation in varying temperature conditions.

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Charge control system for electric vehicles that optimizes battery temperature management during charging. The system dynamically switches between constant current charging and constant voltage charging based on battery state of charge (SOC) and temperature. In the charging mode, it maintains a specific temperature target while adjusting cooling and heating capacities to balance heat generation and dissipation. The system also considers external temperature and load conditions to maintain optimal charging parameters. This approach enables precise temperature control during charging while minimizing battery degradation.

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Battery pack for electric/hybrid vehicles with integrated temperature management system that maintains optimal operating conditions for lithium-ion batteries. The system comprises a heat management device sandwiched between prismatic cells, with each cell enclosed by a heat sink that mechanically connects to the outer frames. This device enables temperature-dependent thermal expansion and contraction of the cells during charging and discharging, ensuring consistent contact with the heat sink for efficient thermal transfer.

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Power supply system for electric vehicles with multiple parallel battery packs that prevents overheating and balancing issues. The system uses controllers and switches to manage the battery packs. Each pack has a temperature sensor. If a pack's temperature exceeds a threshold, the switch for that pack is turned off. Additionally, the system uses a PWM controller to pulse the switches based on battery voltage and current. This balances the charging/discharging currents and prevents overcharging/overdischarging. By actively managing the packs based on real-time measurements, it prevents overheating and balancing issues compared to passive balancing methods.

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