Solving the Challenge of Multiple Drones and Hundreds of Batteries

From XPONENTIAL 2018

We’ve discussed the difficulties related to the amount of time that a UAV can stay in the air, but these limitations are not stopping organizations of all sizes and types from utilizing drones to perform tasks in faster, cheaper and safer ways, or from quantifying what their ROI in the technology looks like. Doing so often depends on using the right system and power source/process to keep drones in the air in order to maximize their efficiency. However, as new aircraft are added to growing fleets, the need to have more than one battery per brand/model will make the challenges associated with creating this kind of value more and more difficult.

Identifying this need, an Idaho-based company, Vertical Partners West LLC, has developed and is successfully selling a comprehensive Battery Charging Management System (BCMS) to bring order to the chaos of multiple batteries of different ages, brands and models.

We reached out to Keith Wallace, CEO of VPW LLC and he enthusiastically shared with us the details of his company’s products and services. Keith is also a member of the ASTM F38 Unmanned Aircraft Systems committee, F3005-14a Specifications for Batteries for use in sUAS subcommittee and ASTM/NFPA JWG for Public Safety UAS.

 

batteries

Venom Battery Management System

Juan: Keith, tell us about your company and your products.

Keith: The Company was founded over 15 years ago and almost immediately we launched the Venom brand of batteries which very rapidly grew to be the #1 selling rechargeable battery brand for R/C models in North America. We became experts in portable power, offering over 250 unique products engineered for high-performance applications. Our long-standing reputation for providing quality is demonstrated by the fact that Venom products can be found in more than 1,500 hobby shops in 45 countries worldwide. Venom’s Limited Lifetime Battery Replacement Plan was an industry first and still set the gold standard for after sale support and service.”

 

When did you decide to enter the UAV arena?

A few years ago we decided to invest heavily in R&D and create a Commercial Series ruggedized battery that would include real-time fault detection and battery lockout protocol aids, thus bringing transparency to battery health while also providing actionable feedback to extend battery life and increase safety. The design utilizes a proprietary electrolyte and separator technology enabling our cells to operate at higher temperatures and ensuring ultra-low internal resistance with cell-level values consistently below 3 milliohms.

 

But providing a better battery was not the real revolution that you guys were looking for, correct?

Yes, we listened to our customers and the real problem for commercial operators is the fact that, in the enterprise world, success means disparate platforms and a multitude of battery brands and ages that required a complex management system that almost always was home-made and not ideal. We developed and manufactured, here in the USA, a new family of commercial charging systems, which minimize risk and take the complexity out of managing a fleet of batteries, large or small. These systems are packed with innovative features centered on a modular and scalable rack-mounted design allowing the system to grow with your operation.

 

How do you handle the fact that most UAV batteries are of different size, shapes, weight and amperage?

We created a system that would accept any type of battery and adjustable charging power from 0.1A to 22A per bay, user configurable charge and discharge profiles per battery type, 4 independent battery bays, 500mA cell balancing current and an accurate state of charge estimation. Our BCMS also records voltage, current and temperature data during discharge and controls safety features such as overvoltage, undervoltage and over temperature protection. We also added an automatic internal charge bay temperature monitoring and safety shut off built to withstand a catastrophic battery failure.

 

Now that you mention battery safety and catastrophic events, how does your system prevent potential fires during fast charging?

With battery charging safety in mind, each system has four uniquely designed, isolated charging bays built from heavy gauge steel which run along full extension drawer glides for smooth, stable operation and easy battery access. Each charger bay latches into the chassis of the charger and is coupled to an internal manifold system with heavy duty scavenging fans. With the Venom BCMS, catastrophic battery events are contained and exhausted to an external location, minimizing impact to its surroundings. Integrated temperature sensors in each bay further increase safety with user adjustable shutdown parameters to help stop a catastrophic event before it occurs.”

 

Regarding software, how does your system helps commercial operators manage their fleet of batteries?

We developed a piece of software that would allow complete control over one or one hundred chargers with a single user-friendly and intuitive interface. The system is cloud-based for quick secure access to your valuable data from any location. Automatic capture and analysis of all charge and discharge metrics provides users with nearly infinite reporting capabilities. Regulatory requirements will soon mandate record keeping for all commercial UAS operations within the national airspace and our system already provides all necessary information to be fully compliant.”

While the industry waits for new power sources and a notable extension of TITA (time in the air) the solution presented by VPW LLC is a viable alternative for commercial operators with multiple unmanned platforms and a plethora of batteries, all in different stages of their useful life.

 

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About the Author

Juan received a degree in Geodesy and a master in digital photogrammetry from Universidad Central de Venezuela and a MBA in international Finance from Florida International University. He has over 750 hours of experience in photogrammetry navigation and camera operation in aircraft as varied as WWII B-25, Cessna 310, Lear Jet 25C and Piper Aztec. Juan holds a Commercial, Multi-engine Pilot certificate. Juan has been selling mapping UAV’s in Latin America for four years and is a frequent guest speaker in events where the safety of flying UAV’s and the fact that unmanned and manned aircraft inevitably will share the same airspace, is a relevant topic. He is the CEO of Juan B Plaza Consulting, a services’ firm specializing in UAV and general aviation issues.

2 Responses

  1. Douglas Spotted Eagle

    Great article. I’m a small bit surprised that the FAA mandate regarding battery maintenance/logging was not included in this article. The safety side is well-covered, but the prime benefit of the Battery Replacement plan was not.
    Well designed, brilliant product from Venom! Kudos!!

    Reply
  2. Juan Plaza

    Douglas, great idea for a new article. I’m vaguely familiar with the FAA requirements for battery maintenance/logging but if we combine the Venom technology with the UL3030 I believe there’s material for a complementary piece on how all these organizations are working in parallel to accomplish the same goal: battery safety, extending battery life and, in some cases, increasing TITA (time in the air). Thanks for the tip!

    Reply
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