Inside the BMW 330e inverter
Posted: Thu Dec 31, 2020 10:22 pm
Hello I've got a BMW 330e inverter and could not resist to examine it.
So if someone is interested in it, I show my findings.
It is a Bosch 0437508310 or BMW 8742493.
The IGBT are labeled with a Bosch number, so I could not find any information, but the internet says for the Bosch LEB450D inverter short time 450A, continous current 108A.
May be the IGBT's and driver board are usable, but my find is, it will not be easy. The auxillery supply is controlled by the controller board, so no switching regulator on the driver board. There is a µC on the driver board that connects to two IGBT via driver parallel to the driver controlled from the controller board, I don't know if only for monitoring, or for emergency use, or what else.
The busbars are pressed fit so it will be better if you don't need to disconnect them so you need to configurate the driver IC via SPI. They have a debug input for use without configuration, but then you have to decompose everything.
I try to get use of the IGBT Board and made some documentation of my findings.
Some parts on the controller board are Bosch, the µC in the DC/DC converter is a SC667236 NXP so custom specific. On the controller board are a lot of resistors for current measurement (I expect 12V) and some Power MOS-FET for switching, also some auxillery power supplies.
So if someone is interested in it, I show my findings.
It is a Bosch 0437508310 or BMW 8742493.
The IGBT are labeled with a Bosch number, so I could not find any information, but the internet says for the Bosch LEB450D inverter short time 450A, continous current 108A.
May be the IGBT's and driver board are usable, but my find is, it will not be easy. The auxillery supply is controlled by the controller board, so no switching regulator on the driver board. There is a µC on the driver board that connects to two IGBT via driver parallel to the driver controlled from the controller board, I don't know if only for monitoring, or for emergency use, or what else.
The busbars are pressed fit so it will be better if you don't need to disconnect them so you need to configurate the driver IC via SPI. They have a debug input for use without configuration, but then you have to decompose everything.
I try to get use of the IGBT Board and made some documentation of my findings.
Some parts on the controller board are Bosch, the µC in the DC/DC converter is a SC667236 NXP so custom specific. On the controller board are a lot of resistors for current measurement (I expect 12V) and some Power MOS-FET for switching, also some auxillery power supplies.