Airflow Design for EV Battery Cooling Applications

A traction battery pack assembly with compartmentalized battery arrays and an exhaust system to manage thermal energy levels. The battery pack has multiple compartments, each housing a battery array. Air is selectively moved through the compartments using intake and exhaust manifolds. This allows heating or cooling of the batteries. Multiple exhaust manifolds prevent hot gases from one array affecting others during venting events. It also allows selective heating or cooling based on compartment temperatures.

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Battery pack, thermal management system, and control method for a battery pack that balances heat dissipation with waterproofing. The pack has sealed cavities with internal channels for active cooling using fans. Temperature sensors monitor cell groups. The control system adjusts cooling and charging based on cell temps.

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Battery pack design with active cooling and waterproofing for high-power, fast-charging batteries. The pack has a sealed housing with a bracket inside forming multiple battery cell compartments. Fans are positioned to actively cool the cells through heat dissipation passages. This allows high-power discharges and quick recharges without overheating. The sealed compartments prevent water ingress. Temperature sensors monitor cell temps and fans/charging are controlled to maintain safe ranges.

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Active battery temperature management system for electric vehicles that uses an opening/closing control unit to regulate airflow and reduce temperature differences inside battery packs. The system has a duct with an opening/closing control unit that can rotate to adjust the amount of air flowing through the duct and into the battery pack. A temperature sensor measures cell temperatures and the control unit calculates an angle for the control unit to rotate based on the readings. This allows focusing airflow on high temperature areas. The duct has a driving force mechanism to rotate the control unit.

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New energy vehicle battery pack cooling system to improve battery life in hot environments. The system has an upper shell with embedded air ducts, fans, and motors. The battery pack snaps onto the lower end of the shell. Air guides draw air into the shell through the ducts. The fans pull air out through the shell. This creates a closed loop for circulating air through the pack to dissipate heat. The lower shell has baffles to prevent air short circuits. An outer wind hood guides ambient air into the shell. This system captures and circulates internal pack air to efficiently cool the batteries.

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Air-cooled heat dissipation system for energy storage battery systems that ensures consistent temperatures across multiple battery clusters to improve reliability and extend life. The system uses an annular air duct connecting all the battery clusters, an air conditioner to blow cold air into the duct, and a fan in each cluster to extract hot air. This provides uniform cooling and extraction to avoid temperature imbalances between clusters.

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Cooling structure for battery packs in electric vehicles that efficiently cools components like battery modules and LDCs inside the pack. It uses an integrated cooling system with an intake and outlet on the pack, a blower unit mounted on the battery module, and a control unit near the outlet. The blower pulls air in through the pack intake, cools the module, and exhausts through the pack outlet to the control unit. This allows all components to be cooled using a single integrated system rather than separate external devices.

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Battery pack design for electric vehicles that reduces airflow variation inside the battery module for more consistent cooling. The pack has a duct between the battery module and fan, with the intake port on the opposite side. This guides air over the module before it enters the fan, preventing localized airflow around the fan that can cause flow rate variation inside the module.

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Electric vehicle battery thermal management system to balance heat dissipation across multiple battery packs in a pack arrangement. The system uses partition boxes between adjacent battery packs made of heat-conductive copper alloy with insulation seals. The partition boxes have cavities and end tubes with seals. This allows controlled heat transfer between packs. Temperature sensors in the partition boxes monitor pack heat levels. Valves direct airflow through the boxes to circulate hotter air to cooler packs. This prevents high-temperature packs from heating adjacent packs excessively.

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Battery pack with an improved thermal management system that provides effective cooling and temperature uniformity without adding complexity or parasitic power consumption. The pack has a baffle structure between adjacent battery modules that guides a controlled flow of air through serpentine pathways. This recirculates air between modules for uniform cooling. The baffle structures attach to the connecting members between cells. The pack also has channels, blowers, and fins for recirculating and dissipating the air.

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Smart and dynamic cooling system for vehicle batteries that cools each cell individually and maintains a desired temperature range. The system has a movable cooling fan mounted on sliding channels. It moves over the battery pack to provide targeted cooling to hotter cells. Thermal sensors detect hot spots and guide the fan there. This dynamic cooling prevents uneven temperatures that degrade performance. The fan sweeps over the pack to distribute heat evenly.

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Thermal management system for electric vehicle batteries that uses a refrigerant-based cooling loop and an air duct to cool the batteries without using liquid coolant. The system has a refrigeration path with a compressor, heat exchangers, and throttle, and a battery cooling path with a fan, duct, and battery pack. In refrigeration mode, the refrigerant circulates and cools the battery pack. In natural cooling mode, the fan circulates air through the duct and cools the pack. This eliminates liquid leakage risks compared to liquid cooling.

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Air cooling system for battery packs in confined spaces that improves cooling efficiency of both central and peripheral battery cells. The system uses a central fan to create a pressure difference for circulating cool, dried air through adjustable slots to battery surfaces. Local fans further distribute the air. Cooling and drying the air before circulation enhances central cell cooling while the slots target peripheral cells.

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An air-cooled heat dissipation structure for new energy battery boxes that aims to evenly dissipate heat from the battery packs during discharge to prevent hot spots. The structure uses a dual-chamber airflow system with a negative pressure fan. The battery packs are sandwiched between the lower and upper boxes. A branch air duct is installed between the packs and a main duct connects the branch ducts. The fan pulls air through the main duct and branches to cool the packs. The branch ducts have divided areas on each side to distribute airflow more evenly across the packs.

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Vehicle battery pack with improved cooling performance while reducing costs compared to conventional battery packs using external coolers and blowers. The battery pack has an internal airflow channel with constricted shape that gradually decreases in cross-section towards cooling fins. This restricts airflow and creates higher velocity and turbulence, enhancing heat transfer from the battery cells. The pack can also have an adjustable wind direction plate to restrict airflow and heat exchange in extreme temperatures. This passive internal cooling avoids the need for external cooling devices.

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Battery pack case for electric vehicles that regulates internal temperature by adjusting airflow. The case has an inflow channel, an accommodating cavity, and an outflow channel that connect. Louvers on the case can rotate to change the flow area of an opening. A driving assembly with a linkage connects to the louvers and can move them when actuated. This allows controlled adjustment of airflow through the case to balance heating and cooling of the battery pack.

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Air-cooled battery pack thermal management system for electric vehicles that simplifies the cooling setup while meeting heating and cooling demands. It uses a compact air-cooled battery pack enclosure with integrated heat exchangers for both heating and cooling. The pack is surrounded by a closed air circulation loop with a pump, fan, and temperature sensor. The pack exchangers exchange heat with the circulating air to regulate the pack temperature. This eliminates the need for separate heating and cooling systems. A control algorithm monitors pack temperature and optimizes loop flow rates for efficient cooling/heating.

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Air cooling system for battery packs in electric and hybrid vehicles that improves cooling efficiency by integrating air intake, fans, exhaust, and electronics into the battery enclosure. The air intake, exhaust, and electronic compartments cover part of the battery exterior, enclosing the cooling components. This integrated air delivery module reduces heat transfer resistance and improves cooling performance compared to separate components.

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A vehicle thermal management system that can efficiently cool critical components like electric motors and batteries while also providing cabin air conditioning. The system uses a reversible fan and heat exchanger to transfer more heat out of the vehicle when cooling components versus when cooling the cabin. This allows higher component temperatures for better efficiency in some modes. A separate cooling circuit further improves heat transfer for hot weather. The system also has provisions for charging the battery using external power sources like electrical connections or solar panels.

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A cooling device for energy storage batteries that uses a ducted fan with adjustable airflow direction to improve heat dissipation compared to fixed fan blower designs. The ducted fan has air guide covers at the ends that can be connected to the battery pack openings. By swapping the connections, the fan can switch between blowing air into the pack or sucking air out. This allows more flexible heat dissipation options to prevent hot spots and improve overall cooling.

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Air-cooled battery pack for electric vehicles that reduces fan noise, optimizes cooling channel space, lowers costs, and provides better cooling compared to traditional packs with external fans. The pack has multiple battery modules inside a case with an inlet and outlet. A cooling channel connects the bottom of the case to the inlet and outlet. Internal exhaust fans force air through the channel. This eliminates external fan noise and improves cooling efficiency by using forced convection.

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Battery pack cooling system for electric vehicles that maximizes cooling efficiency even when a duct structure is used inside the battery pack housing. The system includes a duct extending from an intake port to an exhaust port, a heat pipe contacting the battery cells, and a heat sink inside the duct. This allows airflow through the duct to extract heat from the heat pipe and cells. The duct, heat pipe, and heat sink are arranged in the pack housing to isolate the cooling system from the internal battery space. This prevents contamination and allows natural air intake while driving.

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A temperature control device for battery packs that actively cools the batteries to prevent overheating and thermal runaway. The device uses a blower fan to circulate cold air through the battery pack. Cold air is released by a cooling device and flows through the battery cells via multiple intakes. The blower fan then sucks the cooled air back through a ventilation channel and exhausts it. This active cooling system allows regulating the battery temperature by controlling the cold air supplied by the cooling device.

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A battery pack with heat dissipation fan to prevent overheating and improve cooling of multi-cell battery packs. The pack consists of multiple battery bodies connected together, surrounded by a housing with a fan, ventilation, and heat dissipation features. The fan is connected to the batteries and draws air through the housing to cool them. The housing has ventilation holes and a radiating column to dissipate heat to the outside. The fan, ventilation, and column prevent internal temperature buildup. The housing is fixed to prevent movement during operation.

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Thermal management system for energy storage systems that allows adjusting the airflow volume to battery clusters based on operating conditions. The system uses an air duct with a deformable section near the battery. An adjustment device contacts the deformable section to change its shape and adjust the airflow volume through the duct. This allows fine-tuning of cooling air delivery to each battery based on factors like temperature and charge level.

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A compact cooling system for battery packs in electric vehicles that provides improved cooling efficiency for both the battery case and the electric device compared to conventional systems. The system avoids the need for intermediate ducts and enlarged fans by arranging the battery case and electric device in parallel instead of series, with separate airflow paths. This reduces pressure drop and allows using a smaller fan. The cooling airflow also bypasses the battery case to directly cool the electric device. This prevents heated air from the battery entering the device and improves cooling overall.

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Battery pack with an air duct structure and an air cooling method that provides efficient cooling with reduced space and cost compared to liquid cooling. The pack has air control elements on the sides that direct air through the battery modules. Air enters one side, flows through the modules, then exits the other side. This leverages natural convection and reduces the need for fans or complex liquid cooling systems. The pack can have multiple rows of modules with intervening air control elements. The duct design improves cooling by directing airflow through the heat dissipation elements of the modules.

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An air-cooled battery thermal management system for electric vehicles that uses an air conditioning system with a forced air duct and negative pressure fan to improve cooling efficiency of the battery packs. The system includes an air conditioner with heating and cooling components connected to an air duct. A fan is placed near the battery pack to force air through the duct and improve cooling. The air conditioner can also have water components for additional cooling.

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Air-cooled battery thermal management system for electric vehicles that prevents localized overheating and improves temperature uniformity. The system uses reciprocating airflow through the battery pack to quickly and evenly cool hot spots. It has reversible fans in the left and right channels that alternate direction to force air back and forth. Valves in the front and rear channels can be opened to direct low-temperature air into hot areas. This periodic reciprocating flow with directed cooling provides better heat distribution compared to static airflow.

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Power battery pack temperature regulation system for electric vehicles that provides efficient temperature control without consuming excessive electrical power. The system uses an enclosed box mounted on the vehicle chassis to house the battery pack. The box has a temperature sensor and an air intake mechanism on the front chassis side. The air intake has sliding plates that can be moved to adjust the intake area. A telescopic motor inside the box drives the plates. An air pipe connects the box to an external fan and control valve. The temperature sensor signals the motor, fan, and valve to regulate the air intake and exhaust. This allows active control of the box's internal temperature without direct contact with the external air.

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Battery pack with a fan that automatically ventilates during thermal runaway to mitigate overheating and potential fire hazards. The pack has temperature sensors in cells, exhaust, and intake. A controller determines if a cell is runaway based on sensor readings. If so, it activates the fan to induce airflow through the pack. This exhausts hot gases from runaway cells while drawing in cooler air, preventing further overheating.

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Battery cooling system for electric vehicles that uses an internal blower to circulate air through the battery pack. The system has a separate cooling unit inside the battery housing that provides a path for air blown by the blower to flow through the battery pack. This internal cooling system allows more effective and efficient cooling of the battery compared to just blowing air onto the outside of the pack. Sensors and controls can monitor and adjust the blower speed based on battery temperature.

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Battery pack cooling system using multiple fans to selectively direct airflow through sections of the pack. The system has a fan array with fans that can transmit airflow through different sections of the battery pack enclosure at different operating conditions. This allows targeted cooling or heating of specific sections based on need. The fans can also prevent backflow when one fan is transmitting through a section. This selective flow control improves cooling efficiency and reduces thermal imbalances compared to uniform flow systems.

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Battery pack heat dissipation system for electric vehicles that provides efficient and uniform cooling to prevent battery damage and improve performance. The system uses an air duct network with multiple inlets and outlets around the battery pack. Fans circulate air through the ducts to extract heat from the battery modules. Temperature sensors at the inlets and outlets monitor the battery temperature. The duct layout is optimized to balance airflow and cooling across the pack. This prevents hotspots and ensures consistent battery temperatures for optimal performance and longevity.

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Fully parallel and uniform air distribution type battery pack thermal management system for electric vehicles that provides uniform cooling to all battery cells in a pack without hotspots. The system uses internal baffles in the pack enclosure to divide the airflow into multiple channels that distribute cool air evenly to the battery modules and cells. This prevents hotspots by ensuring all cells receive similar cooling airflow.

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A lithium battery cooling system with stepwise adjustment to improve heat dissipation efficiency without consuming battery power. The system has an outer circulation pipe around the battery compartment, a middle circulation pipe inside with baffles separating the batteries, and air passages connecting them. This provides airflow between battery locations for uniform heat distribution. The outer pipe has heat blocks and a fan for active cooling. A movable cavity and plate allow battery displacement. The middle pipe has a chamber for moisture collection. The stepwise adjustment allows gradual cooling as battery temps rise.

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Battery pack design for improved cooling efficiency of the battery modules. The battery pack has a housing containing multiple battery modules in separate cases. The housing has walls with intake and exhaust ports facing each other. The battery cases have contact walls separating them. The contact walls face each other between the intake and exhaust walls inside the housing. This creates a ventilation path between the contact walls that forms part of the airflow between the intake and exhaust ports. It allows direct cooling of the contact walls, which improves overall module cooling efficiency.

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Battery pack thermal management system for electric vehicles that uses the cabin air to cool or heat the battery pack without complex cooling systems. The system has an enclosed space to house the battery pack, connected to an air inlet duct from the cabin and an air outlet duct. A fan between the spaces moves air through the pack and out. In cooling mode, cold cabin air is drawn in to cool the pack. In heating mode, hot cabin air is drawn in. The fan speed is controlled based on battery temperature and cabin temperature difference. This leverages the cabin HVAC to naturally heat or cool the battery pack without separate cooling systems.

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Battery pack cooling system with adjustable width air channels to uniformly cool battery packs. The cooling system has multiple air channels coupled to the battery pack to introduce and exhaust air for cooling. Some of the channels have slits in the walls that can be adjusted in real time to change the channel width. This allows customizing the cooling for different regions of the battery pack based on temperature sensors. By dynamically widening or narrowing channels in specific areas, it balances cooling across the pack to prevent hotspots and improve overall cooling efficiency.

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Fully parallel and uniform air distribution type battery pack thermal management system for electric vehicles that provides uniform cooling to all battery cells in a pack without hot spots. The system uses internal air baffles in the pack to distribute cool air evenly throughout the cells. It has an air inlet, air outlet, and internal baffles to channelize and distribute air inside the pack. The baffles divide the pack into air supply channels, cell cooling channels, and air induction channels. This creates a fully parallel and uniform airflow path for cooling all cells equally.

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Battery cooling system for electric vehicles that actively adjusts the ambient temperature around the battery pack to prevent overheating. It uses an adjustable air duct on the battery compartment that can be ventilated and heated by controlling the airflow speed. A temperature sensor inside the battery compartment detects the temperature and a battery management system adjusts the duct airflow based on the sensor reading. This allows proactive temperature control instead of relying on passive heat sinks.

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Battery heat sink for electric vehicles that uses air cooling instead of water cooling to prevent damage from water condensation. The heat sink has a box body with an air-cooled circulation device inside. The device includes fans to circulate ambient air through the battery pack. This prevents condensation issues that can occur with water cooling. It also allows using lower temperature air, which improves cooling efficiency compared to higher temperature water. The air circulation also reduces humidity inside the battery pack, preventing condensation that can lead to short circuits.

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Battery pack design for electric vehicles that provides uniform cooling to all cells and prevents hot spots. The pack has upper and lower cell arrangements separated by a central chamber. A central horizontal airflow path connects the chambers and a vertical supply airflow brings in air. This allows airflow between the bottom surfaces of the cells in the central chamber to evenly cool them. An outlet above the cells vents hot air. The pack protects the bottom surface and ensures cell output.

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Automatic cooling and heat dissipation system for lithium-ion battery packs in unmanned aerial vehicles to prevent overheating and improve battery life. The system uses a phase change material, fans, and airflow control to actively cool the battery packs. It has a heat dissipation system inside the pack between the upper and lower covers. Temperature sensors monitor the pack. If the battery temperature exceeds a threshold, the phase change material absorbs heat and fans circulate air to dissipate it. When the temperature drops, the fans turn off. This active cooling prevents overheating and prolongs battery life in high-rate applications like drones.

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A heat dissipation structure for lithium-ion battery packs that improves heat management and prevents swelling and deformation. The structure is installed between adjacent battery cells to provide support and restraint. It consists of return air supports that capture and redirect airflow between the cells. This allows efficient heat extraction without gaps between the cells that can cause uneven temperatures and deformation. The returns air supports prevent cell expansion and deformation while still allowing airflow for cooling. This maintains consistent battery temperatures, prevents swelling, and extends life compared to conventional gap-based cooling methods.

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Battery cooling device for lithium-ion batteries in electric vehicles that improves temperature uniformity and reduces overheating compared to conventional cooling methods. The device uses dual-channel airflow through deflectors and fans to distribute cool air more evenly across the battery pack. It has a front fan, rear grille, bottom base plate, and side deflectors. The front deflector has holes facing the battery middle. The rear deflector is parallel to the side cover. This directs air through the middle of the battery pack for more uniform cooling.

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A liquid-cooled battery pack ventilation auxiliary heat dissipation device for electric vehicles that improves battery pack cooling. It uses an air duct between the battery pack and chassis. The battery pack sits on the duct's upper surface, allowing heat transfer into the duct. Cold air is drawn in, passed over the pack, then exhausted to take away heat. This rapid, balanced cooling mitigates temperature spikes during high power discharge. The duct shape and orientation accelerate airflow.

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Cooling air arrangement for battery electric vehicles to improve cooling efficiency and reduce noise compared to conventional cooling systems. The arrangement has a cowl region with a directed air intake that can open/close. The intake ducts fluidly connect to the cooling device inlet and outlet. This allows targeted airflow control and eliminates excessive airflow through unused ducts. It also reduces noise compared to open cowl intakes. The closed intake when not needed prevents external air ingress into the vehicle cabin.

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An arrangement for cooling a battery in an electric vehicle that allows higher cooling efficiency compared to airflow generated by vehicle motion. The arrangement has a battery enclosed in a housing with an inlet and outlet. An airflow channel connects the inlet to the outlet, with a constriction in the channel. This creates a pressure drop when air flows through the constriction. This negative pressure at the outlet draws air from the inlet, cooling the battery inside the housing. The constriction-induced pressure drop provides additional cooling beyond just vehicle motion airflow.

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Controllable air-cooled battery thermal management system to improve temperature uniformity and battery performance by balancing structural differences in the cooling system. It uses alternate opening and closing of air outlets on two symmetrically arranged cooling paths through the battery pack. This allows air to flow through the middle of one side and both sides of the other side to counteract directional temperature gradients. The system also has integrated internal air circulation with a heater and evaporator.

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