The commercial market for drones is ever growing, ranging from delivering your pizza or shoes to supplying medical equipment to rural and inaccessible areas.
Just Batteries’ design, development and production capabilities give it the professional capability to support the drone market, particularly in new ventures and enterprises.
3D rendering of the battery pack.
With a specific set of parameters and specifications, the company created a large format lithium-ion battery pack with a high power capability for a lifting drone. Some of the design parameters were:
• Output voltage of 48 V (14S), output current of 300 A for up to 5 minutes. This equates to 14 400 Watts – about the same power as five 150 litre geysers.
• The weight had to be as low as possible and Just Batteries managed to build it under 14 kilograms.
• The peak power capability is in the region of 400 A for a few seconds (19 200 Watts).
Thermal image of the battery pack during testing.
Component and other design considerations
With very high energy density and low internal resistance, the Samsung 25R cells, that can deliver 20 A continuously, were chosen. The power control module (PCM) used is specified at 260 A continuous with much higher peak current capabilities.
Multiple spot-welding techniques were performed and analysed to ensure that the required current capabilities were met.
Testing
Vigorous testing had to be done. Knowing the risks involved and what was at stake, possible accidents and pack limitations had to be considered to constrain battery rupture and thermal runaways which could have possibly catastrophic consequences.
During the final load testing, Just Batteries analysed the power performance and temperature increase on various components of the pack. This was done using a welding load bank with a load current capability of 500 A.
This testing process would not have been possible without the professional help of some third-party providers. Smarter Welding provided the load bank and Comtest supplied the respected Fluke Thermal Imager 401 Pro.
Powering the IoT Uniross Batteries
Power Electronics / Power Management
Choosing the right battery is not simply a technical detail, but a defining factor in the longevity and cost-effectiveness of any IoT deployment.
Read more...The move to DC infrastructure IOT Electronics
Power Electronics / Power Management
The shift toward direct current infrastructure in data centres is accelerating as operators pursue higher efficiency, improved reliability, and stronger alignment with renewable energy goals.
Read more...Power inductor for automotive applications Würth Elektronik eiSos
Power Electronics / Power Management
The WE-MXGA inductor features RDC values up to 25% lower and a saturation current up to 47% higher compared to other components currently available on the market.
Read more...High-performance DC-DC converter Conical Technologies
Power Electronics / Power Management
With a wide 9 - 40 V DC input range, the Claf Power DWHB400-F24xxN series is a high-performance DC-DC converter family ideally suited for 12 V and 24 V battery-based systems including vehicles, off-grid installations, and distributed power architectures.
Read more...DC-DC converters for next-generation IoT iCorp Technologies
Power Electronics / Power Management
AIPUPOWER’s K78XXJT-500R3 and K78XXJT-500R3-LB give designers a compact, high-efficiency power option for battery-powered and space-constrained systems, combining up to 96% efficiency with no-load input current as low as 0,2 mA.
Read more...240 W in compact form factor Brabek
Power Electronics / Power Management
The cost-effective and reliable RECOM RACPRO1-S240E DIN-rail mount AC-DC series is only 125 x 139 mm and 39 mm wide, yet provides 240 W output.
Read more...You cannot manage what you cannot measure
Power Electronics / Power Management
South African sites are generating solar energy. Most still have no idea what is consuming it… or when, or why. Intelligent load management hardware is changing that.
Read more...Scalable and intelligent power solution
Power Electronics / Power Management
Designed for Africa’s rapidly evolving energy landscape, Bluetti’s ES125 offers a scalable, intelligent power solution that delivers reliable and cost-efficient electricity for uninterrupted operations.
Read more...Simulating grid abnormalities Conical Technologies
Power Electronics / Power Management
Simulating grid abnormalities has become an essential part of validating systems such as inverters, UPS units, photovoltaic inverters, and EV charging infrastructure.
Read more...Evaluation board for STPMIC25 PMIC
Power Electronics / Power Management
The STEVAL-PMIC25V1 is a power management IC evaluation board for the highly integrated STPMIC25, which is designed to manage the power requirements of the core, memory, and interfaces of the STM32MP2x series MPU.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version