Heat Pipe and Vapor Chamber Design for EV Battery Cooling

Three-dimensional heat transfer device with improved heat dissipation efficiency for cooling high-power electronic devices. The device uses a vapor chamber and flattened heat pipes arranged along the short side of the chamber with parallel cross-sections. This configuration reduces the windward area of the heat pipes when air flows over them, minimizing air resistance and improving heat dissipation compared to conventional heat pipes.

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Vapor chamber with integrated functions to save space and weight in devices. The vapor chamber has a container with a cavity containing a working fluid. It has a heat transfer section that cools an electronic component and an extending section with a separate function. This section can have additional features like electromagnetic shielding or absorbing gases like hydrogen. By integrating multiple functions into the vapor chamber, it reduces the overall device size and weight compared to having separate components.

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Heat dissipation device for electronic devices with improved cooling capacity. The device uses a vapor chamber with a three-dimensional heat dissipation structure inside a vacuum cavity. Capillaries on the chamber walls hold cooling liquid. This increases the volume for liquid to absorb heat and vaporize, reducing temperature in the chamber. The vapor then contacts a heat dissipation area to further cool it. This improves overall heat dissipation compared to flat plates. The device can be attached to an electronic component to cool it.

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A heat dissipation plate and vapor chamber for electronics cooling that uses ceramic needles to improve heat transfer and prevent liquid leaks. The heat dissipation plate has a ceramic substrate with protruding ceramic needles. The needles have fluid chambers between them to fill with liquid coolant. This plate can be used in a sealed vapor chamber with a housing and liquid coolant inside. The plate covers the opening and the needles are immersed in the liquid. This allows efficient heat transfer into the liquid and prevents leakage through the seal.

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Direct evaporative cooling device for solid components like electronics without immersion or loops. It uses a sealed enclosure with a perforated surface, a liquid/vapor separator, and a porous wick filled with water. The hot component contacts the wick to transfer heat, evaporating the water. Vapor exits through the separator. A condenser can recondense the vapor and return it. This provides cooling without immersion or loops for components like motors and batteries.

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A 3D heat transfer device that improves the return of vaporized working fluid to enhance heat dissipation efficiency compared to conventional 3D heat transfer devices. The device has a sealed shell with pipes connected to it. One pipe connects directly to the shell and the other pipes have internal wicks. This allows the vapor to flow through the direct pipe to the sealed chamber, condense on the wicks in the other pipes, and return to the chamber. The blocking wicks prevent reverse flow. The sealed chamber contains the working fluid.

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Vapor chamber with simplified filling/sealing process to improve manufacturing and reliability compared to conventional vapor chambers. The vapor chamber has a sealed interior space with a vent hole in the top cover. A sealing plug seals the vent hole. The vapor chamber has a channel in the sealing ring that connects the vent hole to the interior space. This allows filling/degassing the vapor chamber without a separate insertion port. The sealing ring clamps the covers and seals the gap between them. The vent hole prevents pressure buildup during filling/degassing. The sealing plug seals the vent hole after filling to fully enclose the interior space. This simplifies filling/sealing compared to separate insertion ports, reduces vapor chamber edge area, and eliminates the need for complex processes like radio frequency heating and soldering.

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Cooling device with high heat removal capability using submerged boiling and condensation. The device has a sealed boiling chamber partially filled with liquid that boils and condenses inside. The chamber contains a heating section with a heat source, a liquid section, and a vapor section. A cooling element is submerged in the liquid. When the heating section boils, vapor bubbles form and condense on the submerged cooling element and chamber walls. This submerged condensation transfers heat from the boiling liquid to the coolant circulating through the cooling element.

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Battery module with integrated vapor chambers for efficient cooling of the battery cells. The battery module has multiple vapor chambers filled with a working fluid placed between the battery cells. These chambers absorb heat from the cells, convert it to vapor, and transfer it to a heat transfer interface material. The interface material then channels the heat to an external cooling system. The vapor chambers circulate the working fluid between liquid and vapor states to efficiently cool the cells.

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Power battery module system with improved thermal management using high thermal conductivity vapor chambers. The system has a housing enclosing multiple battery cells. Vapor chambers are sandwiched between adjacent cell surfaces and the housing. The vapor chambers have lower thermal resistance compared to conventional methods. Thermal grease is used between the chambers and housing contact points. This provides uniform and efficient heat transfer between cells and reduces temperature differences inside cells.

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Battery for electric vehicles that prevents hot spots and provides homogenous cooling without active cooling systems. The battery has passive cooling loops between the cell stack and casing. Each cell has a loop heat pipe, oscillating heat pipe, or heat pipe. The loops have evaporators in the cell stack and condensers in the casing. The loops circulate phase change fluid between the stack and casing to extract heat. The loops have U-shaped ducts in the stack and casing sections to connect evaporator and condenser. This provides thermal contact and circulation between stack and casing to distribute heat.

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A battery thermal management system that addresses both low-temperature heating and high-temperature cooling needs. The system uses a combination of phase change materials, flat heat pipes, thermoelectric cooling, and vapor chambers. The phase change materials absorb and dissipate heat during charging/discharging. Flat heat pipes transfer heat between battery packs. Thermoelectric cooling plates provide active heating or cooling. Vapor chambers capture and transport heat. This compact, versatile system improves battery temperature control for optimal performance and safety in all conditions.

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A thermal management system for battery packs in electric vehicles that provides uniform cooling and improves battery performance. The system uses planar heat pipes in direct contact with the battery packs to draw heat out, and heat sinks on the edges of the heat pipes to dissipate the heat. The heat pipes have opposed contact regions on the battery packs to balance heat distribution. The heat sinks have varying cooling performance to further optimize cooling.

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Battery temperature control system for lithium-ion batteries that enables uniform temperature distribution, avoids overheating, and reduces thermal management costs. The system uses a combination of heat pipes, heat exchange devices, and temperature control units. Heat pipes are placed directly on the battery poles to extract heat during overheating. They also transfer heat to the battery poles when temperatures are low. The heat pipes exchange heat with a central vapor chamber and external sources. This allows passive cooling/heating via phase change materials. The temperature control units actively regulate pole temperatures. The system provides effective temperature regulation without occupying internal battery space.

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Battery cooling structure using a T-shaped vapor chamber to improve cooling performance of batteries in high power applications where traditional flat plate vapor chambers can overheat. The T-shaped chamber has a bottom section that connects to the battery and transfers heat from the bottom of the battery. This prevents hot spots and allows even cooling. The top section radiates the heat to the surrounding environment. The T-shape allows the bottom section to soak up heat from the battery while the top section radiates it away, improving overall cooling compared to just a flat plate chamber.

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Battery module with improved heat dissipation using an internal heat pipe network to effectively cool the battery cells. The heat pipe structure has a vacuumized sealed tube above the battery holder to transfer heat by evaporating and condensing fluid. It also has a section inserted between adjacent cells to absorb cell heat. Connections between the sections allow heat transfer. This allows peripheral cell heat to be extracted and radiated by the top section.

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Uniform temperature cooling system for battery modules in energy storage applications that provides good heat dissipation, temperature uniformity, reliability, and independent operation. The system uses micro-channel pulsating heat pipes contacting the battery modules to form independent heat dissipation units. The pipes have bent micro-channels with a closed loop connecting sections for evaporation, adiabatic, and condensation. This allows direct heat transfer from the battery side to the condensation section where cooling fluid condenses. It improves heat dissipation and uniformity compared to contact plates. The pipes can also have multiple loops for redundancy if one leaks.

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A compact, efficient thermal management system for cylindrical batteries that uses heat pipes and a unique fluid flow arrangement to uniformly cool and heat multiple batteries in a compact pack. The system has a grid layout with batteries spaced apart and heat pipes connecting adjacent batteries. Fluid flows through the pipes and heat transfer plates in a diagonal pattern to evenly distribute cooling/heating between batteries. The diagonal flow reduces temperature extremes compared to parallel flows. The compact grid design allows more batteries while avoiding rigid contact issues of flat plates.

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Battery pack thermal management system with improved temperature equalization for high-speed charging and discharging. The system uses a vapor chamber module, a phase change material module, and equalization plates to enhance temperature distribution in the battery pack. The vapor chamber modules have surfaces thermally connected to the battery pack shell. Between the surfaces, two-phase flow heat transfer occurs. The phase change material modules have containers filled with material that changes phase during charging/discharging. The containers are thermally connected to the condensation surfaces. Heat from the battery pack melts the material. When it solidifies, latent heat is released. This equalizes temperatures inside the pack. The vapor chamber and phase change modules provide parallel heat transfer paths. The vapor chambers convert localized high heat to spread cooling, while the phase change material absorbs/releases heat to equalize temperatures.

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Battery thermal management structure using heat pipes and phase change materials to reduce parts, simplify assembly, and improve heat dissipation compared to conventional battery cooling methods. The structure is a semi-packaged design where the battery cells are arranged in a discrete array inside a box. Heat pipes with plate-shaped sections connect the cells to cooling channels. Porous lattice structures fill the channels. Phase change material fills the cells. This allows internal heat transfer through pipes and latent heat storage in PCM. Coolant circulates through the channels. In low temp, external heat warms the coolant which transfers to cells. In high temp, cells heat coolant which cools externally.

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