Ebike Battery New Invention, 36V, 48V, and 72V Ebike Battery– This Ebike Battery New Invention is going to blow your mind; because using this circuit you can make 36V, 48V, 72V, or even a higher voltage Ebike battery. And I am going to share with you every bit of information, it’s designing, Proteus simulation, soldering, and practical testing. I know you might be thinking; why have I connected 4 battery packs? Why not a single battery pack? Is it cost-effective? Well, you will get answers to all your questions. So, let me start by telling you why I needed to make this in the first place?
Large battery packs like these are very expensive and for beginners, it’s hard to make a 36V or 48V, or 72V Ebike battery. Because connecting these so many lithium Ion Batteries in series and parallel combinations and then connecting them to a single BMS “Battery Management System” is the hardest job. I myself, when I built my first Trike Electric Scooter for performing some experiments; I used 4 Lead Acid batteries in series to get 48 volts. Of course, these were expensive and too heavy.
Anyhow, at that time this was the easiest solution that I could think of. Even with this easiest solution, the next issue which I faced was charging this 48V battery pack. So, I bought myself a 48V charger which is expensive and not easily available like 12V adaptors.
I ordered this online and then I had to wait for 3 days. Anyway, I performed all my experiments, first I started with a single Hoverboard BrushlessMotor, I successfully controlled it using a throttle handle and then using two 500Watts controllers I controlled two Brushless motors using the same throttle handle.
Next, I studied different Battery management system modules. And I built myself 3S and 4S Lithium Ion Battery Packs as these were easy to start withand moreover at that time I only needed 3S and 4S battery packs.
You can read my article on how to make 3S and 4S lithium Ion Battery packs, I have pretty much explained everything the connections diagram, welding using my designed spot welding machine and I have also explained how to do soldering if in case you don’t have a spot welding machine. So, if you are just starting with Lithium Ion battery packs then you should read my previous articles.
Anyway, after practicing for a while; finally, I was ready to make a 4S lithium Ion Battery pack for my Racing Drone as I was tired of using Lipo batteries. Lipo Batteries could hardly give me 5 to 6 minutes of flight time while my designed 4S lithium Ion battery pack gave me 30 minutes of flight time.
Based on my previous knowledge and experience, I built this 48V battery pack. This is cost-effective and can be easily built by anyone, and this 48V battery pack can be charged using a 12V adopter or a solar panel.
If you make a large 48V battery pack like this then you will need a 13S BMSwhich is available in the range of 3000 to 4200Rs on Pakistani online stores and it’s also quite expensive on Amazon. While on the other hand 3S and 4S BMSmodules are quite cheap. I am going to need four3S BMS modules which will cost me only 1600Rs or 7.17 USD. So, it will save me 2600Rs. And if you purchase these 3S BMS modules on Amazon then it will save you 50USD. Even if you search for the cheapest 13S BMS modulestill you will be saving yourself a lot of money.
So, using these 3S BMS modules I built myself these 3S Lithium Ion Battery Packs. You can read my article on how to make 3S and 4S lithium Ion Battery packs using 3S and 4S BMS modules. Anyway, now I can connect these 4 battery packs in Series to get 48 volts.
For this I designed this Semi-automatic control circuit. Its job is to connect all these batteries in series when needed to power up the Electric Bike or Electric Scooter and to charge the battery packs using a low-cost 12V adaptor. You don’t need a 50V or a high volt charger. A 12V and 3 to 4 amps adaptor is more than enough or if you want you can also use a solar panel. Now, you might be thinking how am I charging a 48V battery pack with a 12V adaptor? Well, it’s simple let me explain this by connecting all the 4 battery packs.
And when I turn on this switch then all the batteries are connected in parallel. Now, I can use my 12V adaptor or a solar panel to charge all the batteries. At the same time, you can either charge the batteries or use them to power up the Ebike. This limitation is on the BMS side, I have already explained this in my previous video and article.
Anyway, this is a fully working prototype model. If you don’t like using the relays, then you can use power MOSFETs to implement the same concept. This circuit works with 1s, 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, and so on. It depends on you how much voltage you need on the output.
When it comes to troubleshooting of this 48V battery pack it’s very easy. You can individually check each battery pack and if there is something wrong you can replace that battery pack with a new one or can simply replace the faulty cell and you are good to go.
While on the other hand if one or more cells are damaged in a large battery pack then you will need to de-solder all the cells to find the faulty cells, which is really a tedious job.
Ebike Battery New Invention, 36V, 48V, and 72V Ebike Battery– This Ebike Battery New Invention is going to blow your mind; because using this circuit you can make 36V, 48V, 72V, or even a higher voltage Ebike battery. And I am going to share with you every bit of information, it’s designing, Proteus simulation, soldering, and practical testing. I know you might be thinking; why have I connected 4 battery packs? Why not a single battery pack? Is it cost-effective? Well, you will get answers to all your questions. So, let me start by telling you why I needed to make this in the first place?
Large battery packs like these are very expensive and for beginners, it’s hard to make a 36V or 48V, or 72V Ebike battery. Because connecting these so many lithium Ion Batteries in series and parallel combinations and then connecting them to a single BMS “Battery Management System” is the hardest job. I myself, when I built my first Trike Electric Scooter for performing some experiments; I used 4 Lead Acid batteries in series to get 48 volts. Of course, these were expensive and too heavy.
Anyhow, at that time this was the easiest solution that I could think of. Even with this easiest solution, the next issue which I faced was charging this 48V battery pack. So, I bought myself a 48V charger which is expensive and not easily available like 12V adaptors.
I ordered this online and then I had to wait for 3 days. Anyway, I performed all my experiments, first I started with a single Hoverboard BrushlessMotor, I successfully controlled it using a throttle handle and then using two 500Watts controllers I controlled two Brushless motors using the same throttle handle.
Next, I studied different Battery management system modules. And I built myself 3S and 4S Lithium Ion Battery Packs as these were easy to start withand moreover at that time I only needed 3S and 4S battery packs.
You can read my article on how to make 3S and 4S lithium Ion Battery packs, I have pretty much explained everything the connections diagram, welding using my designed spot welding machine and I have also explained how to do soldering if in case you don’t have a spot welding machine. So, if you are just starting with Lithium Ion battery packs then you should read my previous articles.
Anyway, after practicing for a while; finally, I was ready to make a 4S lithium Ion Battery pack for my Racing Drone as I was tired of using Lipo batteries. Lipo Batteries could hardly give me 5 to 6 minutes of flight time while my designed 4S lithium Ion battery pack gave me 30 minutes of flight time.
Based on my previous knowledge and experience, I built this 48V battery pack. This is cost-effective and can be easily built by anyone, and this 48V battery pack can be charged using a 12V adopter or a solar panel.
If you make a large 48V battery pack like this then you will need a 13S BMSwhich is available in the range of 3000 to 4200Rs on Pakistani online stores and it’s also quite expensive on Amazon. While on the other hand 3S and 4S BMSmodules are quite cheap. I am going to need four3S BMS modules which will cost me only 1600Rs or 7.17 USD. So, it will save me 2600Rs. And if you purchase these 3S BMS modules on Amazon then it will save you 50USD. Even if you search for the cheapest 13S BMS modulestill you will be saving yourself a lot of money.
So, using these 3S BMS modules I built myself these 3S Lithium Ion Battery Packs. You can read my article on how to make 3S and 4S lithium Ion Battery packs using 3S and 4S BMS modules. Anyway, now I can connect these 4 battery packs in Series to get 48 volts.
For this I designed this Semi-automatic control circuit. Its job is to connect all these batteries in series when needed to power up the Electric Bike or Electric Scooter and to charge the battery packs using a low-cost 12V adaptor. You don’t need a 50V or a high volt charger. A 12V and 3 to 4 amps adaptor is more than enough or if you want you can also use a solar panel. Now, you might be thinking how am I charging a 48V battery pack with a 12V adaptor? Well, it’s simple let me explain this by connecting all the 4 battery packs.
And when I turn on this switch then all the batteries are connected in parallel. Now, I can use my 12V adaptor or a solar panel to charge all the batteries. At the same time, you can either charge the batteries or use them to power up the Ebike. This limitation is on the BMS side, I have already explained this in my previous video and article.
Anyway, this is a fully working prototype model. If you don’t like using the relays, then you can use power MOSFETs to implement the same concept. This circuit works with 1s, 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, and so on. It depends on you how much voltage you need on the output.
When it comes to troubleshooting of this 48V battery pack it’s very easy. You can individually check each battery pack and if there is something wrong you can replace that battery pack with a new one or can simply replace the faulty cell and you are good to go.
While on the other hand if one or more cells are damaged in a large battery pack then you will need to de-solder all the cells to find the faulty cells, which is really a tedious job.
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