7S battery holder

2 years ago

Open source license: CC-BY-SA 3.0

Project source： Cloned from 7S battery holder

Not tested yet See this Video first: https://youtu.be/fL6ugOUgtiU

This design improment came from the following video: https://youtu.be/9YwErplHps8

The improvemtns that I made:

Different battery holder: A. So the battaris will snap in and will not fall off. B. The battery is not in a case, so better air flow. C. The holders can dissapate the battery heat to the PCB.
Large ground plane to cool the battery.
Small jumpers so the PCB can be anything from 2S-7S
M3 holes to be used with brass spacers.
Smaller overall PCB.
Some other improments.

7S Power Bank

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PCB_V3

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ID	Name	Designator	Footprint	Quantity	Mounted
1	0670647e5cbc4337a8d20c54ccd5e2b2	B1,B2,B3,B4,B5,B6,B7	54_THM_HOLE	7	Yes
2	4e1e967a3e1d473e8affba9af81e0643	P1	8_PIN_HEADER_1_ROWS	1	Yes
3	SMD2920P300TF/15	F1	SMD2920	1	Yes
4	4629516b2d714db4ac0976b5d93f9358	SJ1	SJ_2S_L	1	Yes
5	71e45fc8ce4a429f9330872d7b7054b5	TP3	PAD.03X.04	1	Yes
6	6c7d4cfe77054caba68c50c4be374cfd	6S,5S,4S,3S,2S	SJ_2S_L	5	Yes

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All comments 1

When assembled the cell holders are too close and can short when adding batteries. requires more spacing between the batteries. 5mm more in between.

both negative standoff terminals are touching the battery holder and are pushed outwards when the adjacent batteries are inserted. requires more spacing, 6mm more outward

separation of the battery clip holder pads on the top side need more separation from the grounding copper .

the distance of the cell clips between the positive and negative terminals for each cell need to be brought closer by 4mm due to design of the choose battery clips.

do not order as is, modify first.
otherwise good design especially since it can work from 2s-7s, and with modifications can be scaled beyond 7s.

2019-10-10 13:19:19