Ultrasound-equipped Battery Prevents Potential Fires With Sound Waves
DOWNLOAD https://blltly.com/2tfkny
The device that the researchers developed is an integral part of the battery and works by emitting ultrasound waves to create a circulating current in the electrolyte liquid found between the anode and cathode. This prevents the formation of lithium metal growths, called dendrites, during charging that lead to decreased performance and short circuits in LMBs.
The device is made from off-the-shelf smartphone components, which generate sound waves at extremely high frequencies -- ranging from 100 million to 10 billion hertz. In phones, these devices are used mainly to filter the wireless cellular signal and identify and filter voice calls and data. Researchers used them instead to generate a flow within the battery's electrolyte.
By propagating ultrasound waves through the battery, the device causes the electrolyte to flow, replenishing the lithium in the electrolyte and making it more likely that the lithium will form uniform, dense deposits on the anode during charging.
Ultrasound is sound waves with frequencies above the upper limit of human hearing (about 20kHz) and is heavily used as a procedure in the non-destructive testing of materials to detect invisible flaws and create images of the insides of devices. Probably the most widely known examples are sonograms to image the inside of human bodies in the medical field or bats using ultrasound to map their environment.
Research at Princeton led by Hsieh describes a framework relating changes in sound speed, via density and modulus changes, to state of charge and state of health within a battery. Density and modulus are closely related to the charge state of the batteries tested and the team tested commercially relevant NCA/graphite cell, LCO/graphite cell, and a Zn/MnO2 alkaline battery cell. This was the founding paper for Liminal Insights (fka Feasible).
One big potential application is for second-life and being able to characterize old batteries for re-use. Research from Universidad Pontificia Bolivariana explored this with old 18650 cells in Colombia but found inconclusive results due to second-life cells having incredibly complex ultrasound responses due to many different degradation pathways.
I\\u2019ve recently been fascinated by battery manufacturing and how new technologies could be adopted to do \\u201Cmore with less\\u201D. I\\u2019m continuing my dive into technologies and companies that I find interesting and potentially gamechanger for the battery industry and sharing them with you... next up, ultrasound.
The core of the issue is safety and reliability. The recent battery fires with Chevy Bolt EV led to LG Chem reimbursing $1.9B to General Motors. For a battery juggernaut like LG Chem, they\\u2019re luckily able to absorb these costs and but for any developing players in the field, this would tank the company. Being able to catch these defects (in Bolt\\u2019s case, the defect was a \\u201Ctorn anode tab and folded separator\\u201D) would be critical to preventing accidents like this.
In-line inspection. In traditional manufacturing, defects and variations occur at every process step during manufacturing. For example, a defect in insufficient electrolyte wetting might only be detected at the very end of the battery manufacturing process at \\u201Cacceptance testing\\u201D, at which point those cells would be put into the failed pile. For a cell (that we know is going to fail) to go through all the downstream steps including formation/ageing/testing (which takes up to 3 weeks and up to 32% total energy of the battery manufacturing process) is a tremendous waste of resources. Inserting in-line inspection using ultrasound devices to detect things like electrolyte-wetting and filling and other process steps can save significant time and money, all of which are critical in a streamlined production environment with better build quality. At a base level, in-line inspection could save a potential $1.50-2.00/kWh per process step. This might not sound like a lot, but it turns out to be pretty significant especially when battery margins are slim.
Devices called ultrasonic sensors, transceivers, or transducers can both detect and produce ultrasonic sound. They send out sound waves through a high-voltage electrical pulse and receive back an echo. This echo generates an electric pulse that is converted into a sound within the human hearing range.
A directed-energy weapon (DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include weapons that target personnel, missiles, vehicles, and optical devices.[1][2] In the United States, the Pentagon, DARPA, the Air Force Research Laboratory, United States Army Armament Research Development and Engineering Center, and the Naval Research Laboratory are researching directed-energy weapons to counter ballistic missiles, hypersonic cruise missiles, and hypersonic glide vehicles. These systems of missile defense are expected to come online no sooner than the mid to late-2020s.[3]
Noise is a factor that can also interfere with BP measurement. Many ALS units carry doppler units that measure blood flow with ultrasound waves. Doppler units amplify sound and are useful in high noise environments.
The other idea would be to use an exterior grade plywood and build a three-sided, free-standing structure around the pipe. I would probably start by building it using three walls with the potential to add a roof section later, if needed. This structure could be built around the exhaust so that the sound and air that escape are contained by the structure. This could EASILY be lined with an exterior rated absorptive surface if the plywood does not offer enough reduction. Here are a few images I quickly threw together to illustrate the idea: (It was a lot faster for me to make this pipe using flat-surfaces rather than a rounded pipe)
I would be happy to do my best to discuss a few potential products with you, but all of the products that I have to start to reduce the airborne sound from one unit to the other are construction grade, permanent products or building methods.
Answering this type of question is difficult because there are quite a few different potential issues with a situation like this. If the machines are introducing vibration into the structure, it is a much different type of answer than if the machines are just loud. Also, if the laundry room and your room share HVAC ductwork, the sound can very easily be coming through the ducts. The air gaps/cracks around and under the door could also be potential problems. 153554b96e
https://www.naadv.org/forum/general-discussions/free-cumshot-editorl-best
https://www.olympiaditus.com/forum/sports-forum/nicelabel-pro-suite-5-keygen-torrent-verified