Hi there, new here!
I'm trying to find a current regulator for the following need.
My source is 2 Lithium batteries of around 20V, they are 5Ah 20Vmax batteries for Dewalt power tools. So I have a total of around 41.5V full charge for 5Ah.
The thing I'm trying to power is an electric bike, which, according to my test with my bench PSU, cannot take more than 2A.
- I'm trying to supplement the internal battery of 42V to extend the range of the bike.
When I connect the external battery directly to the bike, the current goes to 13 A and the bike controller shut down the input and stops the charge.,
Therefore, I'm trying to regulate the current to a maximum of 2A.
My first look was at something like the LM317, but the voltage is limited to 36V and Amp to 1.
I looked at this page https://www.ti.com/power-management/non-isolated-dc-dc-switching-regulators/overview.html
and did not find any chip with those ranges, 40V IN at 2A.
I also saw some circuits with MOSFET but did not find enough info to help.
Am I asking the impossible? Any ideas?
Thanks!
Simon
I'm trying to find a current regulator for the following need.
My source is 2 Lithium batteries of around 20V, they are 5Ah 20Vmax batteries for Dewalt power tools. So I have a total of around 41.5V full charge for 5Ah.
The thing I'm trying to power is an electric bike, which, according to my test with my bench PSU, cannot take more than 2A.
- I'm trying to supplement the internal battery of 42V to extend the range of the bike.
When I connect the external battery directly to the bike, the current goes to 13 A and the bike controller shut down the input and stops the charge.,
Therefore, I'm trying to regulate the current to a maximum of 2A.
My first look was at something like the LM317, but the voltage is limited to 36V and Amp to 1.
I looked at this page https://www.ti.com/power-management/non-isolated-dc-dc-switching-regulators/overview.html
and did not find any chip with those ranges, 40V IN at 2A.
I also saw some circuits with MOSFET but did not find enough info to help.
Am I asking the impossible? Any ideas?
Thanks!
Simon