🔋 Predicting Battery Degradation with a Trinket M0 and Python Software Algorithms
In battery-powered devices, it is important to give the user insight into the condition of the battery. We've all seen examples of this in devices like phones, laptops, and even flashlights. They provide predictions of capacity and/or time remaining before the battery must be recharged.
This article explores some straightforward software algorithms we can use to make a similar prediction. If your system design already includes a microprocessor with some spare ADC ports, this approach can avoid the cost of an additional part. We will look at the algorithms in general, then look at some real results with lithium batteries.
More information...
#articles #python #projects #battery
In battery-powered devices, it is important to give the user insight into the condition of the battery. We've all seen examples of this in devices like phones, laptops, and even flashlights. They provide predictions of capacity and/or time remaining before the battery must be recharged.
This article explores some straightforward software algorithms we can use to make a similar prediction. If your system design already includes a microprocessor with some spare ADC ports, this approach can avoid the cost of an additional part. We will look at the algorithms in general, then look at some real results with lithium batteries.
More information...
#articles #python #projects #battery
🔋 Battery tester using an ESP32, micro SD cards and Arduino
This project is a datalogger to check the capacity of 18650 batteries by determining if they are in good condition or they must be discarded.
The data that is logged in the SD card is: correct, power, voltage, LM35 temperature and execution time.
In order to not discharge the battery without having connected all the components, there is a button to start the discharge of the battery. Once the button is pressed, the relay closes, the battery starts to discharge and the data is logged every 5 seconds on the SD card.
When the battery is bellow 2.8V, the relay opens to prevent over discharging the 18650 battery and also appears a new display showing the principal data acquired by the ESP32.
More information...
#projects #esp32 #arduino #battery
This project is a datalogger to check the capacity of 18650 batteries by determining if they are in good condition or they must be discarded.
The data that is logged in the SD card is: correct, power, voltage, LM35 temperature and execution time.
In order to not discharge the battery without having connected all the components, there is a button to start the discharge of the battery. Once the button is pressed, the relay closes, the battery starts to discharge and the data is logged every 5 seconds on the SD card.
When the battery is bellow 2.8V, the relay opens to prevent over discharging the 18650 battery and also appears a new display showing the principal data acquired by the ESP32.
More information...
#projects #esp32 #arduino #battery
🔋 Big breakthrough for 'massless' energy storage
In groundbreaking new research, scientists have made a structural battery 10 times better than in any previous experiment
In the new paper, researchers from Chalmers University of Technology and KTH Royal Institute of Technology in Sweden reveal how their “massless” structural battery works.
To make the new structural battery, the scientists layered a buffer glass “fabric” between a positive and negative electrode, then packed it with a space-age polymer electrolyte and cured it in the oven. What results is a tough, flat battery cell that conducts well and holds up to tensile tests in all directions.
The battery’s combined qualities (or “multifunctionality”) make it 10 times better than any previous massless battery — a project scientists have worked on since 2007.
More information...
#news #battery #articles
In groundbreaking new research, scientists have made a structural battery 10 times better than in any previous experiment
In the new paper, researchers from Chalmers University of Technology and KTH Royal Institute of Technology in Sweden reveal how their “massless” structural battery works.
To make the new structural battery, the scientists layered a buffer glass “fabric” between a positive and negative electrode, then packed it with a space-age polymer electrolyte and cured it in the oven. What results is a tough, flat battery cell that conducts well and holds up to tensile tests in all directions.
The battery’s combined qualities (or “multifunctionality”) make it 10 times better than any previous massless battery — a project scientists have worked on since 2007.
More information...
#news #battery #articles
📰 Gravity-based batteries
Alongside the chilly, steel-gray water of the docks here stands what looks like a naked, four-story elevator shaft—except in place of the elevator is a green, 50-ton iron weight, suspended by steel cables. Little by little, electric motors hoist the weight halfway up the shaft; it is now a giant, gravity-powered battery, storing potential energy that can be released when needed.
And that moment is now: With a metallic moan, the weight inches back down the shaft. Reversing direction, the motors become electric generators, sending up to 250 kilowatts of power back to the grid. For peak power, the weight can descend in 11 seconds—but for testing purposes, it moves just a few meters at “creep speed,” says Douglas Hitchcock, project engineer at Gravitricity.
The company announced this week that its small-scale demonstrator is now operational, capable of switching between drawing energy from the grid and sending it back in a matter of seconds.
More information...
#news #battery
Alongside the chilly, steel-gray water of the docks here stands what looks like a naked, four-story elevator shaft—except in place of the elevator is a green, 50-ton iron weight, suspended by steel cables. Little by little, electric motors hoist the weight halfway up the shaft; it is now a giant, gravity-powered battery, storing potential energy that can be released when needed.
And that moment is now: With a metallic moan, the weight inches back down the shaft. Reversing direction, the motors become electric generators, sending up to 250 kilowatts of power back to the grid. For peak power, the weight can descend in 11 seconds—but for testing purposes, it moves just a few meters at “creep speed,” says Douglas Hitchcock, project engineer at Gravitricity.
The company announced this week that its small-scale demonstrator is now operational, capable of switching between drawing energy from the grid and sending it back in a matter of seconds.
More information...
#news #battery
🔋 Cement-Based Batteries May Turn Buildings Into Massive Power Storage Facilities
Chalmers University of Technology (CUT) presented a new cement-based battery that could form the building blocks of entire structures to store energy harvested by renewables.
The CUT team's concrete-based battery does, indeed, have a relatively strong performance. The researchers said that tests showed the battery has an energy density of 7 Wh per square meter of material (or 0.8 Watthours per liter) — 10 times more than previous concrete battery solutions.
The CUT team did note that their research is in its very early stages. One issue that will have to be resolved, for example, is the fact that concrete buildings have an incredibly long lifespan, not matched by batteries.
Despite the drawbacks, the CUT team has already envisioned use cases for concrete battery storage.
More information...
#news #battery
Chalmers University of Technology (CUT) presented a new cement-based battery that could form the building blocks of entire structures to store energy harvested by renewables.
The CUT team's concrete-based battery does, indeed, have a relatively strong performance. The researchers said that tests showed the battery has an energy density of 7 Wh per square meter of material (or 0.8 Watthours per liter) — 10 times more than previous concrete battery solutions.
The CUT team did note that their research is in its very early stages. One issue that will have to be resolved, for example, is the fact that concrete buildings have an incredibly long lifespan, not matched by batteries.
Despite the drawbacks, the CUT team has already envisioned use cases for concrete battery storage.
More information...
#news #battery
📟 Open-Source Lithium Battery Voltage Boost Module
A DC boost converter designed around a single cell lithium battery using surface mount components on a custom designed PCB. The PCB is designed in KiCAD, the lovely open source ECAD suite.
Using an inexpensive boost converter IC, it’s able to boost the battery voltage of 3.7 V to 5-24 V. The board includes a battery management system and microUSB connector for charging.
More information:
The main article
The GitHub page
#projects #electronics #battery
A DC boost converter designed around a single cell lithium battery using surface mount components on a custom designed PCB. The PCB is designed in KiCAD, the lovely open source ECAD suite.
Using an inexpensive boost converter IC, it’s able to boost the battery voltage of 3.7 V to 5-24 V. The board includes a battery management system and microUSB connector for charging.
More information:
The main article
The GitHub page
#projects #electronics #battery
👍2
🔋 New Lithium-Metal Battery Could Revolutionize Electronics
In the past, lithium-metal batteries have been extremely unstable and even exploded, making them far too dangerous to push out to the commercial world. But with the new advances uncovered by researchers at the Helmholtz Institute Ulm (HIU), they could last far longer and be much safer.
The new battery uses a combination of cobalt-poor, nickel-rich layered cathode (NCM88) and a commercially available organic LP30 electrolyte, which, when working together, enable storage of high energy per mass and a largely stable capacity over many cycles, per the researchers.
And the results are remarkable. Its energy density is above the 500-Wh/kg typical threshold that's used to power next-gen EVs, and well above the regular 250-300-Wh/kg energy density that lithium-ion batteries provide. Moreover, the team explained that its new lithium-metal battery retained 88% of its initial storage capacity after 1,000 cycles.
More information...
#news #battery
In the past, lithium-metal batteries have been extremely unstable and even exploded, making them far too dangerous to push out to the commercial world. But with the new advances uncovered by researchers at the Helmholtz Institute Ulm (HIU), they could last far longer and be much safer.
The new battery uses a combination of cobalt-poor, nickel-rich layered cathode (NCM88) and a commercially available organic LP30 electrolyte, which, when working together, enable storage of high energy per mass and a largely stable capacity over many cycles, per the researchers.
And the results are remarkable. Its energy density is above the 500-Wh/kg typical threshold that's used to power next-gen EVs, and well above the regular 250-300-Wh/kg energy density that lithium-ion batteries provide. Moreover, the team explained that its new lithium-metal battery retained 88% of its initial storage capacity after 1,000 cycles.
More information...
#news #battery
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Betavolt, a Chinese startup, has developed an innovative nuclear battery named Betavolt BV100, which is capable of delivering a constant power output of 3V/100 microwatts for over 50 years without needing a recharge. Measuring just 15x15x5 mm, this battery represents a significant advancement in the miniaturization of atomic energy. While 100 microwatts may not seem substantial, Betavolt has plans to scale up the technology to produce a 1-watt nuclear battery by 2025, potentially revolutionizing power supply in devices like smartphones and drones.
The BV100 utilizes radioactive nickel-63, with a half-life of about 100 years, which decays into non-radioactive copper, generating electricity. This process involves a unique structure comprising a nickel-63 sheet placed between diamond semiconductor converters. Despite the use of radioactive material, safety is a key feature of the BV100. Nickel-63 poses minimal external hazard due to its limited range in air and water, and the battery's design ensures the radioactive material is securely encased. This advancement in nuclear battery technology, echoing the early betavoltaic batteries used in space programs and demonstrates significant progress in power density and safety.
#news #energy #battery
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A team from Nanyang Technological University has developed a flexible and thin battery for smart contact lenses that can be powered by a wearer’s tears.
The development overcomes the limitations of current rechargeable batteries that depend on metal electrodes or induction coils. Offering a safer and more efficient alternative, this new battery can produce enough power for smart contact lenses which might be used in augmented reality, health monitoring, and disease treatment.
Right now researchers are working towards commercializing their invention and collaborating with contact lens companies to further enhance the technology.
#news #battery
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