I am puncturing/shorting these 18650 cells in order to help verify that they are truly sodium ion cells.
DIY electrified
DO NOT TRY THIS AT HOME!
I am puncturing/shorting these 18650 cells in order to help verify that they are truly sodium ion cells.
I am puncturing/shorting these 18650 cells in order to help verify that they are truly sodium ion cells.
updated 1 year ago
I am puncturing/shorting these 18650 cells in order to help verify that they are truly sodium ion cells.
I decided to replace the old NMH cells with some of the Sodium Ion cells that I have left over from the motorcycle battery build.
I will not be using a BMS because I do not think NIB cells need it. Balancing is a separate issue that I will address in the future.
I replaced the original cells with NIB cells as a proof of concept. In no way is this an improvement over Li-ion which is presently the industry standard for cordless tool batteries. The few advantaged this chemistry has over Li-ion is temperature and depth of discharge. As I use this drill without a BMS I will FAFO how they stand up to daily use and deep discharge.
Sodium ion has far less energy density than lithium ion. It will not be very practical for professional use as I expect the battery to flatten quickly during use.
This project is mainly for experimentation and to gather data.
I have also tried out a new technique that I am developing where I will use conductive foil tape in the cell joining process. I have not seen anyone else doing this so I hope I am first and on to something.
Sodium Ion cells from General Electronics Technology Co Ltd
alibaba.com/product-detail/Manufacturer-GeB-3-1V-1500mAh-18650_1600907686269.html?spm=a2700.shop_plgr.41413.4.5aaf4147fxURut
These are a great option for DIY EV/battery builders. They are far more convenient than Anderson connectors.
Caution: they have a limited number or connect/disconnect cycles. So not suitable for daily connecting/disconnecting.
The battery consists of 24 Gotion 50AH LifePo4 cells in series.
The driving course consists of a mix of city and rural roads with mostly rural driving that I think represents an average commute.
The bikes main battery (24S1P Gotion 50AH LifePo4 cells) is 50 amp hours with a fully charged voltage of 87.6 volts giving it 4.38 kilowatt hours of energy.
I plan to drive around the airport where I live until the battery cuts out while continuously filming it so that the discerning viewers can verify that hopefully find the certainty that the range test was honestly conducted.
Parts:
For the swingarm I could not find what I liked so I bought two and mixed the parts together since they were interchangeable...
Monkey bike Swingarm - the main swingarm with chassis fittings
aliexpress.com/item/1005003924193172.html?spm=a2g0o.store_pc_groupList.8148356.11.8a3e4522lSlSQk&pdp_npi=3%40dis%21CAD%21C%24%20384.30%21C%24%20384.30%21%21%21%21%21%40210321c316896236501431426e39e6%2112000027482109756%21sh%21CA%21120257864
NIU aftermarket Swingarm - robbed motor mounts/fittings
aliexpress.com/item/1005003556005522.html?spm=a2g0o.store_pc_groupList.8148356.13.8a3e4522QTJFJu&pdp_npi=3%40dis%21CAD%21C%24%20361.18%21C%24%20361.18%21%21%21%21%21%40210321c316896236501431426e39e6%2112000026270204957%21sh%21CA%21120257864
DC-DC step down converter (≈87V to 12V)-
aliexpress.com/item/4000127486041.html?pdp_npi=3%40dis%21CAD%21C%24%207.78%21C%24%207.78%21%21%21%21%21%402101e9d116896234334697783e5f10%2112000033594779742%21sh01%21CA%210&spm=a2g0o.store_pc_home.productList_2004719075234.pic_4
Motor speed controller -
aliexpress.com/item/1005002324301543.html?spm=a2g0o.store_pc_groupList.8148356.14.44f57d5aKsxzbG&pdp_npi=3%40dis%21CAD%21C%24%20266.28%21C%24%20266.28%21%21%21%21%21%40211b88ee16896235391268699eeca4%2112000020089145942%21sh%21CA%21120257864
BLDC Yuma hub motor -
aliexpress.com/item/1005004329058146.html?spm=a2g0o.store_pc_groupList.8148356.4.6e6f340b3XtSKt&pdp_npi=3%40dis%21CAD%21C%24%20349.18%21C%24%20349.18%21%21%21%21%21%4021038edc16896232826121399eb04d%2112000028775760001%21sh%21CA%21120257864
Brake caliper set -
aliexpress.com/item/32809590286.html?spm=a2g0o.productlist.main.11.773a4a86tZnYmd&algo_pvid=b33c2243-c33e-42ee-82aa-849087c9bbf7&algo_exp_id=b33c2243-c33e-42ee-82aa-849087c9bbf7-5&pdp_npi=3%40dis%21CAD%21131.81%2164.58%21%21%2197.39%21%21%402102188b16896239380756538d0748%2112000028531939565%21sea%21CA%21120257864&curPageLogUid=nA2YyWXP9DrS
Left hand brake pump -
aliexpress.com/item/10000210200108.html?spm=a2g0o.store_pc_groupList.8148356.39.50111880QZCqt7&pdp_npi=3%40dis%21CAD%21C%24%2017.84%21C%24%2017.84%21%21%21%21%21%402103225216896241074446578e4374%21%21sh%21CA%21120257864
Rear brake 1700mm hose -
aliexpress.com/item/4000984075389.html?spm=a2g0o.store_pc_groupList.8148356.17.6f6a60288UV6DS&pdp_npi=3%40dis%21CAD%21C%24%206.94%21C%24%206.59%21%21%21%21%21%40210321c616896242673868555e7e51%2112000026574413909%21sh%21CA%21120257864
Twist throttle -
aliexpress.com/item/33060606128.html?spm=a2g0o.store_pc_groupList.8148356.1.75bd3439Mylwnz&pdp_npi=3%40dis%21CAD%21C%24%2027.74%21C%24%2027.74%21%21%21%21%21%402103225116896245668164429e82ec%2167591832806%21sh%21CA%21120257864
Dash gauge - original Aprilia speedo combined with coulomb counter/shunt -
aliexpress.com/item/4000809227116.html?spm=a2g0o.store_pc_allProduct.8148356.1.6c317790t7rWez&pdp_npi=3%40dis%21CAD%21C%24%2024.98%21C%24%2019.99%21%21%21%21%21%402103250d16896247374963280ef005%2110000008105254143%21sh%21CA%21120257864
BMS - 2A 200A
aliexpress.com/item/4000529723243.html?spm=a2g0o.store_pc_allProduct.8148356.7.43f6c9404Uy5nJ&pdp_npi=3%40dis%21CAD%21C%24%208.34%21C%24%205.75%21%21%21%21%21%402101e9d516896249051995295e483c%2112000032091613230%21sh%21CA%21120257864
Lifepo4 cells - I do not recommend buying cells from Aliexpress. They are often used/recycled. Alibaba direct manufacturers are a better source since you can get sequentially produced cells which will match each other much better. Unfortunately I bought these which came without terminal screws and so I was forces to solder the cells together.
aliexpress.com/item/1005002759997512.html?spm=a2g0o.store_pc_allProduct.8148356.1.670773c91FiLAj&pdp_npi=3%40dis%21CAD%21C%24%20370.07%21C%24%20229.44%21%21%21%21%21%4021038edf16896252357801350e33ec%2112000022055259612%21sh%21CA%21120257864
Shock absorbers -
aliexpress.com/item/1005005813957019.html?spm=a2g0o.productlist.main.93.2c641ad6Uw1IWd&algo_pvid=41dec6cb-e055-450e-b612-e2e05be53891&algo_exp_id=41dec6cb-e055-450e-b612-e2e05be53891-46&pdp_npi=3%40dis%21CAD%21147.39%21147.39%21%21%21108.90%21%21%40210218bf16896253808136410d0783%2112000034443866168%21sea%21CA%21120257864&curPageLogUid=ErogTe06y8DT
Aluminum solder kit-
amazon.ca/Harris-500K-Al-Solder-Aluminum-Solder/dp/B001HWFM9Y/ref=sr_1_1?crid=NDIJ29MZOMFP&keywords=Harris+500K+Al-Solder+500+Aluminum+Solder+Kit&qid=1689625832&sprefix=harris+500k+al-solder+500+aluminum+solder+kit%2Caps%2C146&sr=8-1
Other parts like shock mount and aluminum sheet for battery boxes all locally sources and or fabricated.
This is an easy fix.
Buck converters must be internally isolated. Most buck converters are not.
Some projects require a power supply that has a positive and negative voltage rail. The simplest way to achieve this is with a center tapped transformer if you are on AC grid power.
What if grid power is not an option but a high voltage DC source is all you have? Then this is one solution.
DC-DC buck converters:
aliexpress.com/item/4000310730190.html?spm=a2g0s.9042311.0.0.69234c4drnoKl9
Power source: 32700 LifePo4 cells 20S 5P
aliexpress.com/item/32966494333.html?spm=a2g0s.9042311.0.0.27424c4dVsAF90
Not verified but they claim to sell original A grade cells : alibaba.com/product-detail/New-Original-E63B-3-7V-63Ah_62386620676.html?spm=a2700.shop_plgr.41413.13.da2465f9UVlD6L
parts list:
NOTE... EDITED UPDATED. SOME PARTS ARE NOT THE SAME AS IN VIDEO BUT I BELIEVE ARE UPDATED AND OR UPGRADED.
50cc Yamaha BWs/Zuma
hub motor: aliexpress.com/item/33045293633.html?spm=a2g0o.store_pc_groupList.8148356.9.51442c63vP0gFo&pdp_npi=2%40dis%21CAD%21C%24%20603.62%21C%24%20603.62%21%21%21%21%21%402101d8f416664568031487567e22ba%2167394454493%21sh
Motor speed controller: aliexpress.com/item/32812096043.html?spm=a2g0o.store_pc_groupList.8148356.26.6a8171a5j6HIY9&pdp_npi=2%40dis%21CAD%21C%24%20605.15%21C%24%20605.15%21%21%21%21%21%400b0a050b16664569092413836e0b45%2164527187680%21sh
Rear swingarm: aliexpress.com/item/32827612276.html?gatewayAdapt=4itemAdapt
Rear Brake: aliexpress.com/item/32828004610.html?spm=a2g0o.store_pc_groupList.8148356.7.14053edfUROS7D&pdp_npi=2%40dis%21CAD%21C%24%2053.58%21C%24%2050.90%21%21%21%21%21%40210318be16664572479362356ed2d6%2165075296262%21sh
Front Brake: stock with shims : aliexpress.com/item/32848174352.html?spm=a2g0s.9042311.0.0.27424c4dJDbzxK
Throttle: aliexpress.com/item/33061707883.html?spm=2114.12010612.8148356.3.44d44197BSprtO
Thumb Throttle for variable regen: aliexpress.com/item/4000178639311.html?spm=a2g0s.9042311.0.0.27424c4dJDbzxK
84VDC to 12VDC converter: aliexpress.com/item/4000140092142.html?spm=a2g0s.9042311.0.0.27424c4ds1IHjt
Charger: aliexpress.com/item/32910819775.html?spm=a2g0s.9042311.0.0.27424c4ds1IHjt
Smart BMS 2A 200A version : aliexpress.com/item/4000529723243.html?spm=a2g0o.store_pc_groupList.8148356.67.21763de2NYFGRm&pdp_npi=2%40dis%21CAD%21C%24%2014.49%21C%24%2010.42%21%21%21%21%21%402101e9ce16664576167811999e4e1c%2112000029799877686%21sh
Speedometer: aliexpress.com/store/group/Panel-Speedometer/5079180_1000000360620.html?spm=a2g0o.detail.0.0.6c391d732qdY0v
Battery... I have not tested the cells from this company as of yet. Original cells are no longer available: alibaba.com/product-detail/New-Original-E63B-3-7V-63Ah_62386620676.html?spm=a2700.shop_plgr.41413.13.da2465f9UVlD6L
The electric system is so radically different from the original gasoline system. It takes getting used to and you can accidentally over-accelerate with the powerful non-linear torque of the BLDC hub motor.