70KW EV MOTOR | 14000RPM
70 kW EV Motor
Input voltage 400V
Type 3 Phase synchronous perm magnet brushless
RPM 14000rpm max
Condition: Second life - product
Motor Finish Options explained
Bare Metal - Motor will not be cleaned up and not sandblasted or painted and will be delivery bare metal uncleaned.
Painted White - These Motors will be professionally cleaned up and sandblasted before a primer coat then outer white paint is applied.
WHAT'S INCLUDED WITH MEIDEN EV MOTOR 70KW 14000rpm
MEIDEN EV MOTOR 70KW 14000rpm SPECIFICATION
- AC Motor
- Input voltage 400V
- Type 3 Phase synchronous perm magnet brushless
- Resolver: SIN COS resolver
- RPM 14000rpm max
- Diameter 300mm (approx.)
- Depth 150mm (approx.)
- Spine Diameter 19mm (approx.)
- Mass 27Kg
Cables NOT included
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Some additional details from a past customer Tom Cheesewright
6-Pin Connector - code 12303
The six connections here are to three temperature thermistors buried in the body of the motor. One measures the U-phase coil temperature, one the W-phase coil temperature and one the general oil temperature via a separate thermistor. Here are the pins for measuring each of those:
- Pin 11 (sticking with the numbering on the service manual): GTH1 - temperature in the U-phase coil (+ve)
- Pin 12: GTH2 - temperature in the W-phase coil (+ve)
- Pin 13: TH0 - oil temperature thermistor (+ve)
- Pin 14: GTG1 - temperature in the U-phase coil (-ve)
- Pin 15: GTG2 - temperature in the W-phase coil (-ve)
- Pin 16: TG0 - oil temperature thermistor (-ve)
Here are the resistance ranges you should expect across those temperature sensors (connect your multimeter to the -ve and +ve pins for each sensor).
- At -20°, you have my sympathies, and you should see 400-600kΩ
- At 0°, you should see 140-200kΩ
- At 20°, you should see 55-70kΩ
- At 40°, you should see 23-30kΩ
My 6-pin connector was only wired for the phase coil temperature sensors, though I may add in the extra wires. I got it hooked up to my multimeter and sure enough, I saw exactly the above. My home automation system tells me it is 21.4° in my office and I read 65kΩ and 65.2kΩ across the two coil thermistors. So far, so good.
8-Pin Connector
The 8-pin connector is for the resolver. This is an analogue position sensor that is typically used in AC electric motors because it is accurate and robust. Suffice to say that there are three coils in your resolver. One is an input and the other two are outputs, and the position of the motor is calculated by comparing them.
All this means that we need to find six pins to connect up our resolver.
- Pin 1: R1 (sticking with the naming from the manual again) - the first connection for the exciter coil
- Pin 2: S1 - the first connector for output coil 1 looks like this is a standard naming convention so will stick with it)
- Pin 3: S2 - the first connector for output coil 2
(S2-1) - Pin 4: R2 - the second connection for the exciter coil
- Pin 5: S3 - the second connection for output coil 1
(S1-2) - Pin 6: S4 - the second connection for output coil 2
(S2-2) - Pin 7: GGND - earth connection to the ECU
Again the manual helpfully supplies some resistance values for checking the condition of the resolver coils.
- Between R1 and R2, you should see 29-38Ω
- Between S1 and S3, you should see 70-92Ω
- Between S2 and S4, you should see 60-83Ω
Checking mine I saw 37.3Ω on the exciter coil, 86.1Ω on the first coil, and 78.4Ω on the second. All good. (Phew).
BTW 8-pin connector is marked as 12520. As far as I can tell this is listed in the Toyota parts catalogue as 90980-12520.
The inverter wants SIN and COS outputs from the resolver. The output of S1 and S3 gives you SIN, and S2-S4 give you COS.
Orientation and Cooling
It wasn't immediately obvious to me which way the motor should be oriented, so back to the service manual I went. This diagram was very helpful
For more information views Tom's page https://projects.tomcheesewright.com/ev/components.html