Hi Guys, after almost 3 years of R&D we are proud to introduce the latest in battery technology:
THE TRAMPA / VESC 12S7P BATTERY PACKS.
So what makes these packs so special ?
The Trampa / VESC Battery Pack Technology doesn’t use spot welding to interconnect the individual cells. The connection is made via a special, 25A fused contact element, designed for pick and place machine assembly. After out initial investment into R&D, tooling for the parts and tape and reel moulds, we are no able to mass produce tailor made packs for electric mobility and alternative applications needing reliable and safe battery packs.
Using this pack allows anyone to purchase cells locally and fit them into a 12S7P cell array . After closing the pack, you have a perfect battery with a perfect battery management system. And if a cell goes bad one day, you can swap out individual cells or p-groups in no time.
If your cells reach their end of life, you can simply buy new cells and recycle the old. So instead of buying a new and expensive pack, you will only need relatively cheap new cells and 15 minutes of time. The initial investment might equal the investment of a pre-made spot welded pack, but as soon as it’s time to replace the cells, the price drop in getting a second pack is dramatic. Spot welded pack can’t be serviced and are pretty much useless the day one cell goes bad! Way too many good cells end in recycling these days, only because they sit next to a bad cell, permanently interconnected via a spot weld - we resolved this issue and offer an environmentally friendly solution, so that the same pack can stay healthy for a way longer period of time.
Wiring:
There is hardly any wiring involved. Everything is PCB based, neat, tidy and clean.
VESC BMS :
The VESC BMS on this device is the latest in BMS technology . Using the same chipset that is used by the world’s leading electric vehicle manufacturer, this pack features a self monitoring system of automotive grade. Beside that, the system monitors the pack temperature in several locations and allows placement of an additional temperature probe that can be attached directly to a cell in the middle of the pack. Charge and discharge currents are measured and a humidity sensor monitors the humidity inside the enclosure, so that water ingress can be spotted via App. Did I say App? Yes, the pack is connectable to the famous VESC-Tool App . You can not only monitor the pack, but also work on your pack and start and stop balancing, even if you’re not charging at that time. You will also be able to define cut-off voltages, charge current limitations and many more.
The BMS also features CAN-Bus connection and VESC motor controllers can therefore know individual cell voltages, so that a low voltage cutoff can be executed in reference to the lowest cell voltage in the pack, preventing over-discharge of individual P-groups. The BMS features SWD, isolated CAN and USB connectivity. FW updates can be managed via VESC-Tool and the CAN interface. CAN also allows you to couple individual packs to form a bigger battery array (in series, in parallel or both). The CAN Bus is therefore 600V isolated.
Safety:
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Individual cell fusing will give you the confidence that each cell in the pack is secured against short circuiting. A faulty cell would be decoupled within seconds and would therefore not cause any further danger.
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Temperature monitoring in up to 5 locations of the pack.
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Humidity sensor
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Self monitoring, automotive grade chipset.
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App connectivity lets you see what is going on with your pack. Are my cell all healthy and good?
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Charge port with Mosfet switch allows the BMS to decouple the charger at any time.
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Easy to service and extract unhealthy cells.
Pack capacity is roughly 1KWh :
Sony VTC 6: 3120mAh x 7 = 21840mAh = 969Wh
Samsung Q30: 3000mAh x 7 = 21000mAh = 932Wh
LG 18650 MJ1: 3500mAh x 7 =24500mAh = 1087Wh
Build time:
Roughly 45 minutes (if it is the first time you assemble one)
Flight legal:
-Extract cells and box in air travel safe 99Wh packs
-Check with Airline prior to flight
Pack Stacking:
These pack can be stacked in series and in parallel, so that bigger packs can be made from individual packs. This allows to create batteries of massive capacity and desired voltage. If you feel you need 12S 14p on your board: YES this is possible.
I’ts always nice to see such good designed solutions
