Hi everyone,
I see a strong interest in off-the-shelf on-board charging module among the electric vehicle enthusiasts. Me and my friend, firmware and electrical engineers, who worked over 10years for the leading EV companies, realized that maybe we can design one and bring it to you guys.
The idea is to develop a ready-to-go charger, that would take AC voltage at the input and generate DC voltage at the output. The charger should support digital communications (supposedly CAN) with full set of measurements/configuration/safety mechanisms.
The charger can be used together with a charging port, that we're also going to develop. It's going to be a number of different charger port options for different charging interfaces (J1772, COMBO, chademo).
So, it's going to be a complete off-the-shelf charging solution. You only need to add a BMS and a battery to get your vehicle running (well, maybe a motor and a drive inverter also).
Here is the proposed specification:
The charger is going to be built around proper automotive-grade electronic components with emphasis on reliability and safety.
Unfortunately, we can't make this an open-source project due to a number of reasons, most major of which are:
The positive side is: it's going to be a non-expensive, high-quality, off-the-shelf and ready-to-go on-board charging solution for your EV project.
It would be wonderful if you guys can suggest on viability of the project (i.e. would you be interested in getting one) and what features/specs you'd like to see.
Since it's a very early stage of the development, we can try to accomodate pretty much any of your dreams
I see a strong interest in off-the-shelf on-board charging module among the electric vehicle enthusiasts. Me and my friend, firmware and electrical engineers, who worked over 10years for the leading EV companies, realized that maybe we can design one and bring it to you guys.
The idea is to develop a ready-to-go charger, that would take AC voltage at the input and generate DC voltage at the output. The charger should support digital communications (supposedly CAN) with full set of measurements/configuration/safety mechanisms.
The charger can be used together with a charging port, that we're also going to develop. It's going to be a number of different charger port options for different charging interfaces (J1772, COMBO, chademo).
So, it's going to be a complete off-the-shelf charging solution. You only need to add a BMS and a battery to get your vehicle running (well, maybe a motor and a drive inverter also).
Here is the proposed specification:
Code:
Parameter Min Max Unit
============================================
Input voltage 85 300 Vrms
Output voltage 100 430 Vdc
Output current 45 A
Output power 0 7000 W
Output ripple (full load) 1 Vpp
Ambient temperature -40 +100 C
Efficiency 90 95 %
Communication bus CAN
Protection Undervoltage, overvoltage, overcurrent, output short circuit
Safety high-voltage interlock
Measurements Input and output voltage/current, temperature
Certificats UL, FCC
Isolation 4000V between input and output. 4000V between input/output and a digital interface
Unfortunately, we can't make this an open-source project due to a number of reasons, most major of which are:
- MCU, CPLD and other key components are going to be specialized, high reliability, automotive grade ones, i.e. less known to the general public. While I'm sure, there are plenty of high-skilled FW/HW developers, who worked with, say, TI C2000 architecture on this forum, it's unlikely, that the project can get any meaningful contribution/recognition from the open-source crowd.
- It may not be safe to work with exposed high-voltage / high-current circuits without a proper HV training.
- Some of bring-up/calibration procedures may require high-end lab equipment and tools.
The positive side is: it's going to be a non-expensive, high-quality, off-the-shelf and ready-to-go on-board charging solution for your EV project.
It would be wonderful if you guys can suggest on viability of the project (i.e. would you be interested in getting one) and what features/specs you'd like to see.
Since it's a very early stage of the development, we can try to accomodate pretty much any of your dreams
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