Optimizing Airflow for Efficient EV Battery Cooling

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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Battery cooling system to reduce noise from electric vehicle (EV) battery packs. The system has a blower, duct, and valve to cool the battery pack. The valve closes the duct when battery temperature is normal and voltage is high, preventing backflow of high-frequency noise from the battery during voltage control. This suppresses noise without sacrificing cooling when needed.

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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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Battery system design to prevent thermal events from spreading between battery packs. The system has a duct connecting the packs and a fan to circulate air. Filters at the pack connections prevent oxygen ingress. During thermal events, vented gases are directed through the duct and fan instead of spreading to adjacent packs. This isolates and confines the issue to the affected 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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