EV Battery Packaging to Prevent Thermal Runaway

Energy storage system with automated fire suppression to extinguish battery fires early and prevent explosions. The system uses sensors to detect abnormal temperature or size changes in the battery module. When these thresholds are reached, it activates a fire extinguisher to spray agent on the module. This suppresses fires before they spread or escalate. The system also alarms when module expansion is detected.

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Rechargeable battery design to improve high temperature safety by providing a mechanism to discharge internal heat and gas when the battery overheats. The battery has a heat dissipating portion filled into an opening in the cap plate that seals the battery. This opening allows heat and gases to escape during melting to prevent explosions. The cap plate also has a notch groove around the opening. The heat dissipation film on the battery side helps further dissipate heat. By actively venting heat and gases instead of allowing internal pressure to build, the battery prevents catastrophic failures at high temperatures.

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Impact resistant thermal barrier coating for batteries to prevent thermal runaway propagation and fire spread. The coating contains zirconium silicate as a filler and an inorganic binder like alkali silicate or a sol. The zirconium silicate provides high impact resistance and thermal resistance at elevated temperatures, preventing particle blast forces from propagating thermal runaway. The coating can be applied to battery components like cell separators and compartment lids to isolate fires and reduce the chance for catastrophic thermal runaway.

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Battery pack design to improve thermal management of the cells and bus bar by integrally coupling the cell holder and bus bar with a heat-conduction accelerating feature. The cell holder and bus bar are molded together, with a portion of the bus bar that connects to the holder having an enhanced thermal conductivity feature. This accelerated heat transfer quickly and effectively moves heat from the bus bar to the cell holder, which has a larger heat capacity. The heat is then dissipated through air exchange with the environment. This prevents overheating of the cells and bus bar by quickly transferring and dissipating heat.

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Battery pack design with simplified electrical and cooling connections between cells to enable uniform cooling without temperature dispersion, while adaptively providing capacity and output based on requirements. The pack has cells with internal parallel and series connections, individualized cooling plates, and parallel cell streams connected serially. This allows customized cell configurations and uniform cooling by avoiding hotspots. The simplified electrical connections enable adaptive capacity and output matching by adjusting the number of cells in each stream.

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End cover assembly for battery cells with improved sealing and safety. The assembly has a cover plate with a pressure relief hole, a fixed member with through holes, and a gas permeable membrane covering the hole. The membrane edge is connected to the fixed member and partially embedded in a through hole. This prevents the membrane from moving relative to the fixed member as internal cell pressure acts on the membrane. This prevents separation of the membrane from the cover plate and leaks.

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Housing assembly for battery cells that improves pressure resistance and air tightness to prevent cell damage due to expansion. The assembly has a rough region on the inner and outer surfaces of the cover and body where they connect. This roughened joint increases friction force as pressure increases, preventing deformation and sliding. It also uses a sealing member between the body and cover to further improve air tightness. The rough joints and sealing member prevent the cover from deforming and sliding as the cell expands, improving reliability and preventing damage.

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Heat dissipation material with low adhesion force that can be used in electric/electronic devices like batteries. The material has a resin composition with a polyol-based polyester resin as the matrix and an amine-based curing agent. The resin composition has low adhesion force to surfaces like polyester and aluminum due to its unique formulation. The low adhesion property is achieved without using expensive silicone binders or plasticizers that can damage the material or elute during use. The composition can be cured to form a cured body with desirable thermal conductivity, hardness, and curvature for heat dissipation applications.

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A high-speed semiconductor memory design that reduces charging and discharging times of internal buses to improve overall memory access speed. The memory has a sense amplifier in one area connected to the memory cells via a bitline. A separate hookup circuit in another area controls connection between the bitline and sense amplifier. A transistor in a third area connects the sense amplifier and hookup circuit. This layout positions the transistor close to the center of the buses to shorten charging and discharging distances.

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A power storage module with improved adhesion between the insulating sheet and metal components. The module has a binding bar and stack of cells with thermocompression-bonded insulating sheets on the metal surfaces. The insulating sheets have thermosetting properties. This facilitates adhesion compared to using tapes or adhesives, especially avoiding foreign material contamination. The insulating sheets can also have flame retardant coatings for added safety. The thermocompression bonding process involves heating and compressing the insulating sheet onto the metal surface.

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Battery cell design with enhanced safety and improved cooling performance. The battery cell has a tab protection module inside the cell case that covers part of the electrode tab. This module absorbs external forces and prevents tab separation. It also provides a heat dissipation path for the tab area. This improves safety by preventing tab damage from external impacts and prevents internal heat buildup.

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Battery pack design with improved energy density, cost, cooling, and size compared to conventional battery packs. The pack has a cell assembly with multiple cells, a busbar on one side, a cooling unit between the cells, and a cell partitioning unit. This eliminates the need for a separate frame and reduces size. The cells are supported by a cell support unit and covered by a filling member. This simplifies assembly, improves pack integrity, and allows higher cell density.

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Battery module design with improved expansion force release and connection reliability. The battery module has a frame with mounting grooves for the cable ties. The cable ties have an inner and outer section made of different materials. The inner section is closer to the battery cells and provides high connection reliability. The outer section is further from the cells and allows expansion force release. The frame grooves restrict movement of the inner section while allowing the outer section to expand. This prevents inner tie breakage while releasing cell expansion forces.

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Optimizing image stabilization in cameras with wide-angle lenses to reduce blur at the edges while still correcting central blur. The technique involves dynamically adjusting the ratio of image stabilization (IS) and in-lens image stabilization (IIS) when the camera shakes. The IS corrects central blur while the IIS corrects peripheral blur. The ratio is set based on the different image shift sensitivities at central vs peripheral image positions. This balances central blur reduction with peripheral blur reduction to minimize overall image blur across the frame.

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Reducing duplicate records in a threat management system when multiple virtual machines are connected to an enterprise network. The system detects new virtual machines joining the network, creates a unique identifier based on the template and user, compares against existing records, and if a match is found, merges the records instead of creating duplicates. This prevents accumulation of duplicates when users connect multiple virtual machines concurrently.

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System and method to efficiently process wide-angle camera images using a model trained for normal cameras. The technique involves generating multiple virtual images from the wide-angle image, each with a smaller resolution, and feeding these to the model. This allows analyzing the wide-angle scene with minimal loss of information compared to scaling down the wide-angle image. The virtual images can be generated by dividing the wide-angle frame into sections and copying the corresponding area into smaller frames. This enables using existing normal camera models for wide-angle surveillance without needing specialized wide-angle models.

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High performance heat control members for separating battery cells or insulating battery components that have favorable resistance to heat propagation and fire propagation while minimizing thickness and weight of materials used. The members include reinforced aerogel composites with durability, compressibility, and thermal insulation properties for battery applications. The aerogel composites have a reinforcing phase like fibers or open-cell macroporous materials to enhance mechanical properties compared to pure aerogels. The reinforced aerogel composites have compressibility less than 25% at 25 kPa, density less than 0.3 g/cm3, and thermal conductivity less than 25 mW/mK.

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