Most Viewed Content:

Ford will launch a new electric truck under a new product line

REcent report prove that Ford is planning on launching a new electric vehicle that will come with a new nameplate.

Samsung ships first 3nm Gate-All-Around chips to cryptocurrency mining industry customers as promised

This Monday, July 25, Korean electronics giant Samsung began...

Xiaomi 12S and 12S Pro Revealed With A New Processor

Xiaomi is now on a device launching spree as it is set to launch the Xiaomi 12S and 12s Pro with a new Snapdragon processor.

Researchers use Diamond Quantum Sensors to extend EV range

The popularity of electric vehicles (EVs) as an environmentally friendly alternative to conventional gasoline internal combustion engine vehicles has been on the rise. This has led to major research efforts directed at developing efficient EV batteries. However, an important inefficiency of EVs is caused by inaccurate estimation of battery power. This method of assessing the state of charge of EV batteries by measuring the current output of the battery is used to calculate an estimate of the remaining driving range of the vehicle.

Typically, battery currents in EVs can reach hundreds of amps. Yet commercial sensors capable of detecting such currents are unable to measure small variations in milliampere levels of current. This results in an uncertainty of about 10% in the battery charge estimate. This means that the EV’s driving range can be extended by 10%. This in turn will reduce the inefficient use of batteries.

Fortunately, a team of scientists has now come up with a solution. In their research, they report a detection technique based on a diamond quantum sensor that can estimate battery power within 1% accuracy when measuring the high currents typical of EVs. The research team from Tokyo Institute of Technology in Japan was led by Professor Mutsuko Hatano, and their study was published in Scientific Reports.

“We developed diamond sensors that are sensitive to milliamp currents, are compact and can be implemented in automobiles. In addition, we measured a wide range of currents and detected milliamp levels in noisy environments,” said Professor Hatano.

The researchers reportedly developed a prototype sensor using two diamond quantum sensors placed on either side of the car’s bus bar (the electrical connection point between the input and output currents). They then used a technique called “differential detection” to eliminate the common noise detected by the two sensors, leaving only the actual signal intact. This in turn allowed them to detect a small current of 10 mA in the background ambient noise.

Next, the team of scientists used a hybrid analog-digital control of the frequencies generated by the two microwave generators to track the magnetic resonance frequencies of the quantum sensors within a bandwidth of 1 gigahertz. This resulted in a large dynamic range (ratio of maximum current detected to minimum current) of ±1000 A. In addition, a wide operating temperature range of -40 to +85°C was confirmed to cover conventional vehicle applications.

Finally, the research team tested the prototype in Worldwide Harmonized Light Vehicle Test Cycle (WLTC) driving, a standard test for EV energy consumption. The sensor accurately tracked charge/discharge currents from -50A to 130A and additionally demonstrated the accuracy of battery charge estimation to within 1%.

So what are the implications of these findings, said Professor Hatano, “Increasing battery usage efficiency by 10% will result in a 10% reduction in battery weight, which will result in a 3.5% reduction in operating energy and 5% reduction in producing energy for the 20 million new EVs in the 2030 WW. This, in turn, is equivalent to a 0.2% reduction in CO2 emissions in WW transportation in 2030.”

We certainly hope this breakthrough brings us one step closer to a carbon neutral society!” .

Latest

AITO asked the M5 EV to optimize the whole car exclusively

September 6, HUAWEI Mate50 series and full-scene new fall...

PlayStation 5 update is bringing support for 1440p resolution along with user experience improvement

The new PlayStation 5 update is bringing support for 1440p resolution to the console along with some improvments the user experence.

Elon Musk said the new battery can make the cost nearly RMB 40,000

Tesla CEO Elon Musk, to achieve the sale of...

Vivo Y75s 5G phone released: Dimensity 700 chip, starting at RMB 1899

In May 2018, Vivo launched the Snapdragon 450 chip-equipped...

Newsletter

spot_img

Don't miss

AITO asked the M5 EV to optimize the whole car exclusively

September 6, HUAWEI Mate50 series and full-scene new fall...

PlayStation 5 update is bringing support for 1440p resolution along with user experience improvement

The new PlayStation 5 update is bringing support for 1440p resolution to the console along with some improvments the user experence.

Elon Musk said the new battery can make the cost nearly RMB 40,000

Tesla CEO Elon Musk, to achieve the sale of...

Vivo Y75s 5G phone released: Dimensity 700 chip, starting at RMB 1899

In May 2018, Vivo launched the Snapdragon 450 chip-equipped...

Honor X40 Series will launch in China on September 15

The Honor X40 Series will get new entries on September 15, at this time we are not certain about the specifications of this coming series.
Threza Gabriel
Threza Gabrielhttps://www.techgoing.com
TechGoing is a global tech media to brings you the latest technology stories, including smartphones, electric vehicles, smart home devices, gaming, wearable gadgets, and all tech trending.
spot_imgspot_img

Xiaomi car price exposure: the upper limit to exceed 300,000 The first is a sedan

According to a late Auto release, Xiaomi's first electric car will be a sedan with a price ceiling that will exceed 300,000 yuan. The core...

Huawei Sound Joy portable speaker, vibrant orange and island blue color release

In today's Huawei Mate 50 series and all-scene new fall launch, Huawei launched the Sound Joy cartridge portable speakers in two new colorways: vibrant...

OUKITEL RT2 World’s Largest Battery Rugged Tablet Coming Soon In September

OUKITEL is pushing the tablet power capacity to a new era with the new Oukitel RT2 tablet soon to be launched with a 20,000mAh battery