Immersion Cooling Systems to Enhance EV Battery Performance

Immersed battery pack and energy storage system with improved temperature consistency and uniformity for better safety and performance. The immersed battery pack has battery modules placed side by side with gaps between them. Coolant injection ports in the gaps spray liquid into the gaps to fully surround and cool the battery cells. This prevents local hotspots and ensures consistent temperatures across the pack. The coolant channels are integrated into the pack base for cost savings. The immersed pack is contained in a housing to prevent coolant leakage and increase contact area.

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Battery module design for high energy density applications like electric vehicles that improves cooling efficiency and stability compared to conventional battery packs. The module uses a unique immersion cooling configuration where some portion of the battery cells are submerged in a cooling liquid. This allows direct cooling of the cells instead of relying on external radiators. The cells are inserted into a partition wall with a sealed hole that allows immersion. This prevents the liquid from shorting the cells. The partition separates the cells into upper and lower parts with the immersion section in the middle. Coolant flows around the submerged cells to extract heat. This provides more effective cooling compared to traditional radiators since the liquid can be in direct contact with the cells.

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Battery thermal management system for electric vehicles using immersion cooling to efficiently cool the batteries and prevent overheating. The system involves submerging the batteries in a non-conductive liquid, circulating the liquid to extract heat, and using an external heat exchanger to further dissipate it. This provides a closed loop immersion cooling system for the batteries. The liquid submergence and circulation prevents direct air cooling that can be less effective. The liquid cooling allows higher battery density and capacity without overheating.

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Battery pack and power device with improved internal temperature uniformity in immersion cooling. The battery pack has a unique flow path design to prevent temperature gradients in the immersion liquid. The pack has dividing holes in the upper cover plate to split the immersion liquid entering the top of the cell stack. This prevents a long flow path through the cells. The bottom plate has a water outlet to discharge the immersion liquid. This ensures consistent cooling throughout the pack. The pack also has channels and adhesives to guide and collect the liquid for efficient discharge.

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Immersed liquid-cooled battery system that provides higher cooling efficiency and simplifies battery manufacturing compared to conventional liquid cooling methods. The system involves enclosing multiple battery cells in a sealed box and immersing them directly in a cooling medium. This maximizes heat dissipation area as the entire cell periphery is in contact with the cooling liquid. It eliminates the need for separate liquid cooling plates, water pipes, and joints next to the cells. The cells are also more easily installed by eliminating gluing, curing, stacking, and hoisting steps.

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Immersion cooling system for battery packs in electric vehicles that uses metal-capped pouch cells to improve cooling and prevent thermal runaway propagation. The cells have metal housings with exhaust ports, vents, and openings. The cells are arranged in a battery enclosure with an exhaust manifold connected to the cell exhausts. This allows removing hot gases from the cells as they cool in the surrounding dielectric fluid. The metal housings, exhaust ports, and vents prevent internal cell failures from spreading. The exhaust manifold removes exhaust gases from the enclosure. This helps prevent thermal runaway propagation by removing hot gases from failed cells before they can heat adjacent cells. The enclosure can also be filled with dielectric fluid to further submerge the cells.

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Immersion cooling energy storage battery cabinet to improve heat exchange efficiency and stability of immersion cooled battery systems. The cabinet has a housing with an accommodating cavity for the battery module. The battery module is fully submerged in a cooling liquid. Heat dissipation components like a heat sink and pump circulate the liquid to extract heat from the batteries and dissipate it outside the cabinet. The submerged batteries are continuously cooled and stabilized in a narrow temperature range, preventing thermal runaway and improving safety and performance compared to air cooling.

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An immersion cooling system for lithium-ion battery packs that uses glycol-based coolant and a sealed case to cool the batteries uniformly and efficiently. The battery pack has cells held by cell holders inside a sealed case filled with coolant. The coolant surrounds the cells and circulates to extract heat. A hermetic sealant around the cell terminals prevents coolant ingress. This immersion cooling provides uniform cooling across all cells, especially for high charging rates, while minimizing costs compared to special coolants or materials.

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A lithium battery pack immersion cooling module for energy storage containers that provides 100% heat dissipation coverage for the battery pack by fully immersing it in a cooling liquid. This eliminates the issues of limited contact cooling methods that only cover part of the battery pack. The immersion cooling allows complete coverage and prevents contamination of the cooling fluid since it is independent from the cooling pipes. The cooling liquid medium can be selected based on the specific application requirements.

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Battery pack with integrated cooling system to improve cooling efficiency and reduce size compared to external water cooling or immersion cooling. The battery pack has a housing with internal beams containing channels for circulating immersion liquid. The beams have inlets and outlets that connect to the battery cell compartment. This allows circulating the liquid between the beams and cells for cooling without external pumps or reservoirs. The liquid flow is regulated by gradual area reductions towards the inlet. The compartment has separators for organizing the cells and channels. This provides internal cooling without adding bulk or complexity compared to external cooling methods.

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Immersion cooling battery design that improves cooling efficiency and uniformity for electric vehicle batteries. The battery has a box containing stacked electric cells surrounded by spacers. Channels for circulating the cooling liquid are formed between cells, end walls, and the top. This allows immersion cooling between cells and prevents hotspots. The channels also enable extrusion buffering by the spacers. The battery can have inlet/outlet ports for recirculating the liquid. The U-shaped box shape allows full immersion.

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Immersion cooling system for electric vehicle batteries that improves cooling performance by directly contacting the battery and coolant inside a cooling block. The cooling block has a space for coolant to flow through. A vortex generator on the inner wall creates turbulent flow that improves heat transfer. This allows better cooling compared to traditional systems where the battery is just in contact with an external cooling plate.

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Submerged liquid-cooled battery module for energy storage systems that improves safety, maintenance, and efficiency compared to direct immersion cooling. The module has a battery pack with cells in heat conducting grooves inside a box filled with cooling liquid. This isolates the cells from direct contact with the liquid, reducing risks of short circuits and corrosion. The cells transfer heat through the grooves to the liquid. The module has inlet/outlet for circulating the liquid separately from the battery cooling. This allows easy replacement of damaged cells without draining the liquid.

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Battery pack thermal management for electric vehicles that provides better cooling without adding complexity or weight. The battery pack has a cooling plate at the bottom that transfers heat to the outside of the vehicle. The battery cells are immersed in a liquid that heats them internally. This eliminates the need for air cooling or external cooling plates. A pump circulates the liquid, a heating rod warms it, and an air passage can be closed to isolate it. A battery management system controls these components.

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Cooling structures for Li-ion battery packs in electric vehicles that improve cooling performance and prevent thermal runaway. The structures involve circulating coolant through the battery pack components like cell, PCB, and connectors. This provides direct cooling contact and prevents hotspots. The pack has an internal cooling system with channels for coolant to flow through. The coolant enters the pack through the base and exits through the top cover. This creates a circulation path for coolant through the pack components. The coolant can also flow to an external cooling device. This allows complete immersion of the cells in coolant for better cooling.

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Immersion cooling of battery packs for electric vehicles that provides better cooling efficiency, thermal management, and runaway inhibition compared to traditional liquid cooling. The battery modules are immersed in a cooling liquid instead of using liquid channels. This eliminates long heat transfer paths and allows uniform cooling. The cooling liquid circulates at the top of each module. When a module experiences thermal runaway, the liquid cools it preventing air contact. The cooling liquid flow is regulated through upper cover design. The battery box has deionization and ion detection to maintain electrical insulation.

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Immersed liquid cooling module and method for improving heat dissipation and temperature uniformity in high voltage battery systems. The module involves filling the enclosure with a cooling liquid that directly contacts the battery. A liquid cooling plate with flowing medium cools the battery further. Temperature sensors monitor the battery and adjust the pump flow rate to maintain optimal temperature range. This immersion cooling provides higher heat transfer compared to air or indirect liquid cooling.

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Vehicle battery pack with immersion cooling for electric vehicles that provides more effective cooling of the battery cells compared to conventional battery packs. The pack has a design where the battery modules are immersed in coolant channels instead of having external coolant loops. The coolant flows into a cover around the stack of cells in each module to directly contact and cool the cells. This eliminates the need for separate coolant channels through the modules. The coolant is circulated between the modules and a central cooling system.

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Liquid cooling module for electric vehicle batteries that directly immerses the battery cells in coolant to improve cooling efficiency and balance temperatures. The module has a liquid cooling cavity with an accommodating section for the battery pack. The pack is immersed in coolant that flows in and out through pipes. This direct immersion allows the coolant to directly contact the cell surfaces for efficient cooling and temperature balancing.

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An immersion cooling mechanism for lithium-ion batteries that reduces the amount of cooling fluid needed compared to external circulating systems. The battery cells are immersed in a closed container filled with cooling medium. The container has cooling plates with inlets and outlets that connect to the cooling cavity. This allows direct heat transfer between the cells and the cooling fluid without external circulation. The contained fluid can be reused for multiple cycles without continuous circulation equipment. This reduces the required fluid volume compared to external systems.

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