Thermal Management Systems for EV

Battery pack design for electronic devices that prevents overheating and thermal runaway by using a separate heat sink to dissipate heat from the battery pack components. The battery pack has a housing with two compartments, one for the battery cells and another for the circuit board with heat generating components. The heat sink is attached to the compartment without the cells and extends into the cell compartment to contact the heat sources. This isolates the cells from direct contact with the heat sink, preventing overheating and thermal runaway. The heat sink also covers an aperture in the cell compartment to seal it off. Air vents allow airflow between the compartments to cool the heat sink.

Source

Battery system with improved thermal management for electric vehicles. The system circulates two different fluids through the battery cells and surrounding areas to optimize cooling and heating. One fluid circulates through channels at the ends of the cells while the other fluid circulates through the cell holder cavity. This allows separate control of fluid flow for thermal management based on factors like load, temperature, and cell uniformity.

Source

Solid-state battery module for efficient temperature control using resonant wireless charging. The module has the battery, a resonant capacitor, and wireless power circuitry all mounted on one side of a substrate. This allows the capacitor to directly heat the battery using resonant charging. The capacitor is sandwiched between low thermal conductivity components to isolate and concentrate the heat. A thermally conductive path connects the capacitor to the battery. This enables efficient battery heating using wireless charging without needing a separate heating element.

Source

Battery module and rack design to suppress fires in battery packs and prevent propagation when thermal runaway occurs. The module has a valve nozzle to feed firewater into the module if vent gas or flames are detected. An expandable member inside the module absorbs fluid to block air inlets and outlets when the valve opens. This keeps the water level high to cool cells. The rack has a water tank, pipes, and sensors to feed water into modules if runaway is detected.

Source

Improving safety and reliability of battery packs by selectively supplying power to the cooling system when a thermal runaway occurs in one module. When a battery module undergoes thermal runaway, the system determines the module and surrounding modules without runaway based on voltage levels. It then powers the chiller using the non-runaway modules to cool the pack. This prevents overheating and gas generation in the runaway module. The vehicle control unit assists by checking the power supply circuit of the backup modules.

Source

Battery pack design for electric vehicles that improves energy density, mechanical rigidity, and space utilization compared to conventional packs. The pack has a unique arrangement of battery modules inside a case. Each module has battery cells arranged in one direction, enclosed in a case with beams between the cells. The modules are fixed to the cover of the pack instead of a separate tray. This eliminates gaps, beams, and covers inside the pack. Cooling is integrated into the module base plate. The pack cover has a water channel to circulate cooling fluid around the modules. This reduces heat transfer path, parts, and space compared to separate heatsinks.

Source

Reducing weight and complexity of composite materials used in large structures like aircraft by integrating UV/visible light protection into the composite itself rather than applying separate coatings. The composite substrate is coated with a thin layer of UV/visible light-resistant fiberglass before curing. This embedded UV protection eliminates the need for separate coatings and reduces weight compared to applying multiple layers. The composite with integrated UV protection has improved UV resistance without adding weight or complexity.

Source

A heat pump assembly for battery-powered electric vehicles that provides efficient heating and cooling of the cabin, batteries, and drive train while addressing the challenges of low waste heat generation in electric vehicles. The heat pump has a refrigerant circuit with a compressor, condenser, expansion valve, and evaporator. It also has separate coolant circuits for the batteries and drive train. The refrigerant circuit has a chiller that can provide both cooling and heating to the coolant circuits. This allows flexible operation with parallel cooling/heating capability. It eliminates the need for separate air and coolant heating elements. The refrigerant bypass around the chiller allows operation as a pure refrigeration unit when heating isn't needed.

Source

Bodily fluid testing system that allows home urinalysis using a smartphone instead of a lab. The system uses a compact, handheld device with integrated lateral flow strips. Users apply their urine to the device, capture an image with their phone, and analyze the strip colors using the phone's camera. The phone sends the images to a server for processing to determine if indicators of specific conditions are present. The server calculates strip colors using calibration techniques to account for variations between devices.

Source

Protective sheet fixing jig for securing protective sheets on stages in automated visual inspection devices like semiconductor wafer inspection systems. The jig has an upper plate that presses the protective sheet to tightly fix it to the stage. It also has a post, bracket, and a fixing part that presses the stage itself. This allows the protective sheet to be easily replaced without re-taping. The jig can be used on multiple stages in an inspection device. It also has options like pins to locate edges and adjustable screws to press the stage.

Source

Evaluating electrode quality by measuring color coordinates of the active material layer before roll-pressing to quickly filter out defective electrodes. The color coordinate values are compared against predetermined criteria. Electrodes with colors within the range are considered good quality. This allows identifying and removing electrodes with poor adhesion potential before roll-pressing, improving overall electrode quality and yield.

Source

Display panel with improved light transmittance and viewing angles for balancing display performance in high-resolution vertical alignment liquid crystal displays. The panel has pixels with red, blue, green and white subpixels. Each subpixel has a pixel electrode with two electrodes. One electrode applies a voltage to the liquid crystal layer. The other electrode has a different voltage. This creates different orientations of liquid crystal molecules in adjacent regions. The white subpixel helps balance light transmittance. The multiple electrodes and region alignment improves viewing angles.

Source

Protecting a reticle used in semiconductor lithography from particles without using a pellicle. The reticle has gas openings in the border section that blow a pressurized gas away from the front surface to create an air wall surrounding it. This prevents particles from falling onto the reticle during exposure. The gas openings are angled relative to the reticle axis. A gas supply provides gas to the openings through tubes. The gas pressure and flow rate can be adjusted.

Source

A storage system for flash-based storage devices that improves performance and reduces wear by using separate fast write storage in addition to the main flash storage. The system writes data initially to the fast write storage and then later moves it to the main flash storage. This allows faster initial commits without as many writes to the main flash, reducing wear. The fast write storage can be implemented as an on-board SSD or DRAM buffer.

Source

Real-time generation and provisioning of directed digital content based on decomposed structured messaging data for targeted product offers during real-time payments. The method involves extracting elements from payment messages to predict future purchases. It generates product offers tailored to predicted future purchases and provides them to the customer's device in real-time during the current payment. This allows targeted offers during payments based on decomposed message data rather than relying on delayed message content.

Source

An experimental device and method for reproducing expectorated blood spatter, the bloodstain ejected from a victim's respiratory tract at a crime scene. The device has a compressed air ejection unit with an air nozzle and a blood ejection unit connected to it. Blood is injected into the blood ejection unit. Compressed air is ejected from the air nozzle and the blood is ejected from the blood ejection unit under the compressed air pressure. This replicates expectorated blood spatter. The device can be operated at varying compressed air pressures to reproduce different spatter shapes.

Source

A thermal management system for electric and hybrid vehicles that efficiently controls temperatures of vehicle components like the battery, powertrain, and cabin while reducing packaging size and cost compared to separate systems. The system uses a flexible thermal unit (FTU) that integrates components for controlling coolant and refrigerant flow between systems like the battery, drivetrain, and cabin air. This allows thermal management of multiple subsystems from a single device, reducing packaging requirements and costs while increasing function and performance.

Source

Battery heating device for electric vehicles that efficiently heats the battery while minimizing heat loss in the heater core and radiator. The device uses a branching and merging configuration of the coolant flow paths between the radiator, heater core, and battery. It has a radiator flow rate reducing part closer to the radiator in the branching flow path. This allows prioritizing radiator cooling over battery heating initially, then merging the coolant with reduced flow rate from the radiator to the battery once the radiator has warmed up. This reduces heat loss in the radiator and heater core compared to always flowing through them.

Source

Battery cooling system for electric vehicles that improves cooling performance without increasing occupant discomfort from fan noise. The system adaptively adjusts fan speed based on window state. When windows are closed, it uses lower fan speeds for lower battery temperatures to avoid excess noise. When windows are open, it allows higher fan speeds for lower temps to compensate for external airflow. This prevents overcooling with closed windows and allows sufficient cooling with open windows without excess fan noise.

Source

A secondary battery pack for electric vehicles that improves thermal management to prevent runaway cell temperatures and propagation of thermal events. The pack uses a syntactic foam made of hollow glass beads in a silicone binder to insulate the battery cells. This foam provides better low-temperature insulation compared to standard foams. It also minimizes thermal propagation between cells. The pack can have coolant channels and heat dissipation members to further manage cell temperatures. The syntactic foam also helps dampen drivetrain oscillations.

Source