Drone Soccer 200mm 200g vertical mount battery tray

A battery tray for 200g Drone Soccer, 200mm outer diameter, with flight controller mounting holes at 25.5mm diagonal. As long as the flight controller is this size, it can generally be fixed using the flight controller's screw holes. It is recommended to pass screws through the battery tray and then secure them to the carbon fiber plate with nuts. Without this nut fixation, the battery tray will pull the flight controller's mounting screws under severe impact, causing the flight controller's position to shift, which in turn leads to a deviation in the drone's self-stabilization status.

The main design approach is to arrange the battery vertically to minimize obstruction to the downwash airflow. At the same time, the battery is loaded from the bottom, making battery installation very quick.

The battery frame design has a certain degree of elasticity and has been tested to be compatible with the following battery sizes

Bumblebee Drone Soccer with 3S 850mAh 95C 

Format R-line  3S 750mAh 95C

GNB High Energy 3S 700mAh 120C 

GNB High Energy 3S 650mAh 160C 

Among them, the GNB 700mAh battery is a bit long, and after installation, the bottom end of the battery is very close to the bottom of the spherical drone.

You need to purchase a rubber band, 2cm in diameter, to secure the battery together with the battery clamp to prevent it from falling. When installing the battery, pull open the clamp, snap it onto the two side slots, and insert the battery. This clamp can also be used to secure the balance lead.

In actual use, there are advantages and disadvantages. Because the battery is placed vertically, the center of gravity shifts slightly downwards, requiring better tuning of PID and self-stabilization parameters to minimize the pendulum effect. Also, due to the lowered center of gravity, it is highly likely to land face up when dropped. For PID tuning, you can refer to the methods published by the SmartFOX official account.

Only PETG material can be used for printing; other PLAs will break instantly. This is because neither the Z-axis impact strength nor the bonding strength can withstand impacts, and PETG material can also break to some extent. Of course, thickening the material would prevent breakage, but the weight would increase significantly. Currently, the overall weight is about 5.5g. If you only use one battery strap, the battery strap weighs around 6g, but this fastening method will definitely be more secure and allow for faster battery replacement than a battery strap.

The PETG materials currently tested are R3D's transparent red, transparent blue, and Jayo's transparent orange and transparent. Polymaker's regular PETG is not recommended for high-speed printing because its recommended printing speed is 50mm, so it prints relatively slowly, and the effect in use feels no different from R3D and Jayo.

Of course, better materials like Aipu Chuuang's PA6-GF can be used. After printing, soak it in 100℃ hot water until it cools naturally, then dry it. This will result in lighter weight, higher strength, and better performance.

PPA-CF has been tested and is not recommended as it is relatively brittle.

A battery tray mounted on a carbon fiber plate in the traditional orientation is currently undergoing durability testing... The results show significant advantages over existing solutions on the market, and it will be released after successful trials.