Leaf powered RX8

[doobedoobedo]

Well my leaf motor finally turned up today , I think it still has the AC compressor attached too, lots of loom including the charge socket.

Intention is to get it working then pick up the best cheap RX8 I can find.

[johu]

Very nice! Will you be using charger & compressor?

[doobedoobedo]

Compressor - probably.

Charger - almost certainly not. TBH your method of using the motor as an inductor for charging I considered a stroke of genius and was one of the things that drew me to your board.

[doobedoobedo]

Well it all comes apart!

Has anyone tried using the 12V DC/DC converter standalone?

[Cookie6000]

Looks tidy.
Did you shop about on ebay or manage to get one from a dismantler in the UK? Keeping an eye out for one myself for my upcoming conversion but any scrappers I have called in Ireland have already had the battery modules and motor removed. Will start shopping in the UK from here on in...

[doobedoobedo]

I got it from Charles Trent via https://www.autopartstrader.co.uk/ . They usually seem to have some but the prices they advertise them at vary quite wildly. On any of the parts broker sites search for 'nissan leaf engine' rather than motor.

Ebay prices seem to be very much inflated.

[Cookie6000]

Great
Thanks for the link. Agree on the ebay prices, unless you find a complete damaged Leaf for 5k.

[celeron55]

Has anyone tried using the 12V DC/DC converter standalone?

I hardware hacked the gen2 charger and DC-DC converter to work in my conversion. I didn't get the original charger brain board working by commanding it on CANbus, but in my tests I did manage to get the DC-DC to work using CANbus only.

I can dig up some notes if needed, but I don't have any of this in publishable format.

It's not a very complicated system to be honest, but I couldn't figure out what the charger was thinking. (and modifying the charge voltage and such is impossible anyway, and my conversion uses a 72S pack.)

[doobedoobedo]

Any info you are willing to share would be appreciated. If I can get it working I'll document it.

[celeron55]

This is my notes of the PDM's internal connectors. The only thing is, it's mostly in Finnish, but other than that it's enough for remaking the entire brain board if someone has time to do so.

Code: Select all

Liittimet ja niiden signaalit
-----------------------------

CN100:
- PDM:n kotelon liitin
- JST-S24B-PADSS-1
- Pinout:
	-  1: F/S CHG Relay
			- Via fuse (1.5A fast 24V) to CN5405 pin 5
	-  2: Quick charger start/stop signal 2
			- Laturi vetää maahan
			- Mittaus yhdistettynä pinniin 4
	-  3: Quick charger port temperature sensor signal 1
			- Luultavasti 10k25C NTC; toinen pää pinnissä 16
	-  4: Quick charger start/stop signal 1 
			- Laturi nostaa 12 volttiin
			- Mittaus yhdistettynä pinniin 2:
				- -> 750ohm (2x1206) -> PC500-opton sisääntulo -> CN100p2
				- PC500-opton sisääntulon rinnalla 1kohm
			- Mittaus maahan nähden:
				- -> 750ohm (2x1206) -> PC501-opton sisääntulo -> GND
				- PC500-opton sisääntulon rinnalla 1kohm
	-  5: Quick charger permit signal
			- Ulostulo PDM:ltä, vedetään maahan 200ohm 1W vastuksella (2S2P
			  200ohm 1206)
	-  6: Quick charger connection signal
			- PDM:ssä ylösveto 12 volttiin, laturi vetää maahan
			- 1000kohm 0.5-1W vastus P-transistorin kollektoriin, transistorin
			  emitterin virtaa mittaa optoerotin PC502 (tyyppi M49T), johon 12V
			  kisko yhdistyy
	-  7: Datalehden väärä nimi: "Plug in signal"
			- Prototyyppi-PDM:ssä EVSE PWM
			- Ulostulo PDM:ltä, vedetään maahan 600ohm 0.5W vastuksella (2P
			  1200ohm 1206)
	-  8: High voltage harness connector detecting circuit signals
			- Liitetty turvakytkinlooppiin CN5405p2 (rinnalle; joka lienee bugi)
	-  9: Datalehden väärä nimi: "EVSE communication (PWM)" [i/o]
			- 0ohm vastuksella diodiin (J1772)
			- diodin jälkeen signaalin sisääntulo
			- diodin jälkeen 2.74kohm maahan (J1772)
			- diodin jälkeen 1.3k open collector -lähtöön (J1773)
	- 10: EVSE connection signal [in]
			- Prototyyppi-PDM:ssä EVSE connection signal
			- 330ohm 5 volttiin (J1772)
			- 22kohm maahan ja pieni konkka rinnalle
	- 11: Quick charger communication-H (CAN)
	- 12: High voltage harness connector detecting circuit power supply
			- Liitetty turvakytkinlooppiin CN5405p1 (rinnalle; joka lienee bugi)
	- 13: Quick charger communication-L (CAN)
	- 14: (Not documented) (GND on PCB)
	- 15: EV system CAN-H [i/o]
	- 16: Quick charger port temperature sensor signal 2
			- Luultavasti 10k25C NTC; toinen pää pinnissä 3
	- 17: EV system CAN-L [i/o]
	- 18: (NC)
	- 19: (NC)
	- 20: (NC)
	- 21: Battery power supply
	- 22: (NC)
	- 23: Battery power supply
	- 24: Power ON power supply

CN5405:
- DC-DC ja CHAdeMO-apulevy
- JST-S20B-PADSS-1
- Pinout:
	CHAdeMO:
	- 1: Kotelon turvakytkinlooppi alku (suoraan kytkimet sarjassa)
	- 2: Kotelon turvakytkinlooppi loppu
	- 3: F/C 2 grey (contactor right, for common collector control)
	- 4: F/C 1 green (contactor left, for common collector control)
	- 5: F/C 5 red (common collector output from F/C board via fuse (1.5A fast
			24V) from CN100 pin1)
	- 6: F/C 3 yellow (contactor common)
		- According to CHAdeMO spec, should be switched +12V from charger
	- 7: F/C 4 white (logic power)
	- 8: F/C 6 blue (logic GND)
	DC-DC:
	-  9: GND
	- 10: Käyttöjännite DC-DC:lle (5V) (alkup. 1.0A R1501-regulaattorista
	      (merkintä A1J050))
	- 11: GND
	- 12: DC-DC vetää maahan jos virtaraja ylittyy (alkup. 10k vastuksella
	      pnp-transistorin kannalle, transistorin lähtö prosessorille)
	- 13: NC, komponentit puuttuu
	- 14: DC-DC vetää maahan jossain tilanteessa; joku jänniteraja? (alkup. 10k
		  vastuksella pnp-transistorin kannalle, transistorin lähtö
		  prosesorille)
	- 15: DC-DC vetää maahan jos toiminta OK (alkup. 100ohm pikkuvastuksella
	      jonnekin)
	- 16: I2C SCL
	- 17: Sisääntulo DC-DC:lle: 5V = DC-DC komennetaan päälle, 0V = sammuksiin
		  (alkup. 100ohm pikkuvastuksella "E-2"-merkittyyn viisijalkaiseen
		  and-porttiin TC7S08F, jota syöttää renesas sekä viereinen
		  "24"-merkitty transistori (npn))
	- 18: I2C SDA
	- 19: 10k25C NTC DC-DC-muuntimen alla (PDM:n rungossa) (alkup: +)
	- 20: 10k25C NTC DC-DC-muuntimen alla (PDM:n rungossa) (alkup: GND)

CN5401:
- Laturin ohjaus
- JST-S16B-PADSS-1
- Pinout:
	-  1: +15V
			- max. 300mA (5A laturin ulostulolla) (jännite ilman kuormaa ja
			  kuorman kanssa 15V)
	-  2: GND
			- erotettu taso #1, pieni common mode choke +15V:n kanssa
	-  3: +15V
			- yhdistetty pinniin 1
	-  4: GND
			- yhdistetty pinniin 2
	-  5: ISO7241C #2 A
			- voi sitoa maahan; 5V = hakkurin disable TARKISTA
	-  6: AC-syötön rele
			- jatkoliittimen pinni 1
	-  7: ISO7241C #2 B
			- GND = hakkurin disable, 5V = hakkuri käynnissä TARKISTA
	-  8: AC-syötön rele
			- jatkoliittimen pinni 2
	-  9: ISO7241C #2 C
			- voi sitoa maahan, 5V = hakkurin disable TARKISTA
	- 10: SDA
	- 11: ISO7241C #2 D
			- ulostulo laturilta: GND = hakkuri käynnissä, 5V = ei k. TARKISTA
	- 12: SCL
	- 13: ISO7241C #1 A: 4052 S1
			- pysyvä 5V mittauksissa mutta tekee ehkä jotain
	- 14: ISO7241C #1 B: 4052 S2
			- vaihtaa PFC:n ja laturifettien lämpötila-anturin välillä
	- 15: ISO7241C #1 C:
			- 5V (?)
	- 16: ?

CN5102:
- JST-S02B-PASK-2
- Relehaaroitusulostulo laturilta
- Rele on 832A-1A-FS 12VDC käämillä, käämin resistanssi 155ohm, virta 77mA
	- 1: Rele AC-syötössä, kytketty CN5401:n pinniin 6 (+15V aktiivisena)
	- 2: Rele AC-syötössä, kytketty CN5401:n pinniin 8 (+5.6V aktiivisena)

CN5403:
- Käyttöjännite DC-DC:lle
- JST-S02B-PASK-3
	- 1: +16V (max. 50mA DC-DC-muuntimen päälläollessa ~1A latausvirralla 12V:hen)
	- 2: NC
	- 3: GND (erotettu #2, pieni common mode choke)

CN5404:
- Käyttöjännite laturin ulostulopuolelle
- JST-S02B-PASK-2
	- 1: +16V (max. 30mA (5A latausvirta)
	- 2: GND (erotettu #2, iso common mode choke CN4503:een nähden)


DC-DC-muunnin
-------------

Levyä ohjataan muutamalla irtosignaalilla sekä I2C:llä yhtä piiriä, IC1514:ää,
joka on MCP4728 osoitteella 0x60.

Päähakkuriohjaimena toimii UCC2895 jonka EAP ja SS/DISB-jalkoja ohjataan.
- EAP:n voi vetää maahan kaksi eri kytkentää:
	- PC1300: IC1302:n pinni 7 active low (output B)
	- PC1301: IC1302:n pinni 1 active low (output A)
- SS/DISB-pinnin voi vetää maahan yksi kytkentä:
	- Joku transistori jota ohjaa PC1500; luultavasti PC1500:n aktivointi
	  enabloi hakkurin

IC1514: MCP4728 (I2C DAC)
- Ulostulo A: Virtaraja? Yhdistyy vastuksilla IC1100:n pinniin 3 (1in+)
- Ulostulo B: Menee skaalattuna ja suodatettuna IC1302:n pinniin 5
- Ulostulo C: Ei kytketty
- Ulostulo D: Ei kytketty

IC1302: NJM2737 (Dual opamp)
- 1: A OUT:
- 2: A IN-:
- 3: A IN+:
- 5: B IN+: DACin ulostulo B
- 6: B IN-: 100k vastus pinniin 7, 10k vastus IC1100:n pinniin 7
- 7: B OUT: Active low PC1302 (Vetää hakkuriohjaimen EAP:n maahan)

IC1100: TLE2022 (Precision opamp)
- 1: 1out: H=virta alle asetetun rajan; bufferoitu transistoreilla CN1501
           pinniin 10 siten että jos virtaraja ylittyy niin kollektori vetää
- 2: 1in-: 2out (vahvistettu virtamittaus)
- 3: 1in+: Vastuksien kautta IC1514 DACin ulostulo A (virtaraja?); 58kohm->1out
- 4: GND
- 5: 2in+: IC1504(MAX4378 current sense amp) output
- 6: 2in-: 3.3k/1.5k vastusjako ulostulosta maahan
- 7: 2out: 1in-; IC1302:n B IN-; vahvistettu virtamittaus
- 8: Vcc+

IC1102: LMV842 (Dual opamp "K409")
- 1: Aout: PC1500:n disablointi (active high)
- 2: Ain-: Vastussotku jossa 840ohm konkkaan C1116, joka taitaa olla
           ulostulojännitemittauksen suodatuskonkka tai ajastuskonkka
- 3: Ain+: Konkka&560ohm+3.3k+68ohm Ain-:een; 47k vastuksella Aouttiin; 47+3k
           vastuksella I2C SDA:han
- 4: V-: GND
- 5: Bin+: C1116
- 6: Bin-: 6k maahan, 8.2k käyttöjännitteeseen, konkka ulostuloon ja maahan
- 7: Bout: Active high vetää Q1520 kollektorilla CN1501 pinnin 8 alas
- 8: V+

CN1501:
- Virtamittaus DC-DC:n ulostulolevyltä
- Ohjaus laturin päälevyltä
- Pinout:
	-  1: (->CN5405 19) 10k25C NTC DC-DC-muuntimen alla (PDM:n rungossa)
	-  2: (->CN5405 20) 10k25C NTC DC-DC-muuntimen alla (PDM:n rungossa)
	-  3: (->CN5405 17) PC1500:n ohjaus; H=hakkuri päällä
	-  4: (->CN5405 18) I2C SDA
	-  5: (->CN5405 15) Ulostulo: H=PC1500 disabloitu (Q1521 <- Q1509 <- IC1102)
	-  6: (->CN5405 16) I2C SCL
	-  7: (->CN5405 13) NC, komponentit puuttuu
	-  8: (->CN5405 14) OC ulostulo; joku jänniteraja? (Q1520 <- IC1102 Bout)
	-  9: (->CN5405 11) GND
	- 10: (->CN5405 12) OC ulostulo: Vetää jos virtaraja ylittyy (IC1100)
	- 11: (->CN5405  9) GND
	- 12: (->CN5405 10) Käyttöjännite
	- 13: Punaharmaan parin punainen
	- 14: Punaharmaan parin harmaa
	- 15: Mustaharmaan parin harmaa
	- 16: Mustaharmaan parin musta


Alkuperäisen laturin prosessorilevyn virransyöttö
-------------------------------------------------

(jännitekiskojen nimet control_pcb_layered.xcf:stä)

- VCC1: 5V, ohjattu, tuotettu IC1501:llä (R1501 1A LDO)
	- Ohjaus prosessorilta (#1, TP219)
	- Syöttää DC-DC-muunninta
- VCC2: 5V, aina päällä, tuotettu IC206:lla (BD00D0AWHFP 2A LDO)
	- Syöttää prosessoria
	- Syöttää erotusmuuntajan hakkuria
- VCC3: 12V, aina päällä (mahdollisesti kelan ja konkan kautta)
- VCC4: 5V, transistorilla kytketty VCC2
	- Ohjaus prosessorilta (#1, TP219)
	- Syöttää erotinpiirejä laturille päin ja I2C-eeprommia
- Erotusmuuntaja kahdella erillisellä ulostulolla:
	- Ulostulo 1: 15V 300mA laturille yhteismuotokuristimella PLT10HH9016R0PN (#1)
	- Ulostulo 2: 16V, josta:
		- 50mA DC-DC-muuntimelle (#2 omalla yhteismuotokuristimella
		  PLT10HH9016R0PN)
		- 30mA laturin ulostulopuolelle (#2 omalla yhteismuotokuristimella
		  (vähän kuin Kemet SU10VD-20010 mutta lukee R10GE1)
	- Ohjaus prosessorilta (RUN-pinniin) (#1, TP219)

[celeron55]

The gist of the DC-DC in that is that it lives in one half of the brain board's CN5405, and if you connect that right, you need to command it on via the i2c bus. There's an i2c DAC with 2 outputs on the DC-DC converter, one controls the output voltage and one does something else (not sure what), but sending this makes it tick:

Wire.beginTransmission(0x60);
Wire.write(0x40); // Channel 0
// Value written by original software, no idea what this does
Wire.write(0x08); Wire.write(0x89);
Wire.endTransmission();

Wire.beginTransmission(0x60);
Wire.write(0x42); // Channel 1
uint16_t v = LEAD_ACID_BATTERY_CHARGE_VOLTAGE * 164;
Wire.write(v>>8); Wire.write(v&0xff);
Wire.endTransmission();

As for making it work using the original brain board's CAN interface, this is what I found: https://www.mynissanleaf.com/viewtopic. ... 80#p530880

Basically I found out bit 0x04 in the 0x1f2 frame disables the converter (set low to enable, just spam 0x1f2 00 64 00 a0 00 00 00 00 or so every 10ms). You might also need 50b, 1d4 and maybe 55b (probably not). Anyway, that's worthless without the charging working.

[doobedoobedo]

Awesome, thank you. Your notes go through google translate pretty well at first glance. They'll be really useful.

I remembered seeing about CAN switch on, but couldn't remember where, so thanks for that too.

[celeron55]

To control the charger on the internal i2c bus, there's again just a DAC, again with one weird channel and one useful channel.

Wire.beginTransmission(0x64);
Wire.write(0x42); // Channel 1
// 0xcfd is the value sent by the original software all the time
Wire.write(0x0c); Wire.write(0xfd);
Wire.endTransmission();

uint16_t v = (uint32_t)charge_ma * 215 / 1000;

Wire.beginTransmission(0x64);
Wire.write(0x40); // Channel 0
Wire.write(v>>8);
Wire.write(v&0xff);
Wire.endTransmission();

Reading feedback from the charger is done by reading MCP3021 i2c ADCs at addresses 0x49, 0x4d, 0x4e, 0x4c and 0x4f which measure charger temperature, rectified AC A, rectified AC V, bat V and bat A respectively, with scales: 10k NTC voltage, 60bits/A, 6.78bits/V, 8.122bits/V and 213bits/A.

The 4052 that controls which of two temperature sensors is read by the 0x49 ADC is directly controlled via CN5401.

[doobedoobedo]

SMD adapter board with Brain Board

Should have it spinning soon

[johu]

To control the charger on the internal i2c bus, there's again just a DAC, again with one weird channel and one useful channel.

Cool, just saw this. How do you access that I2C bus?

[doobedoobedo]

I've not had much of a chance to do anything on this, but here's a translation (via google) of celeron55's notes

Code: Select all

Connectors and their signals
-----------------------------

CN100:
- PDM housing connector
- JST-S24B-PADSS-1
- Pinout:
- 1: F / S CHG Relay
- Via fuse (1.5A fast 24V) to CN5405 pin 5
- 2: Quick charger start / stop signal 2
- The charger pulls the ground
- Measurement combined with pin 4
- 3: Quick charger port temperature sensor signal 1
- Probably 10k25C NTC; one end on the pins 16
- 4: Quick charger start / stop signal 1
- The charger raises to 12 volts
- Measurement combined with pin 2:
- -> 750ohm (2x1206) -> PC500 Opton Input -> CN100p2
- In addition to the PC500 opto input, 1kohm
- Measuring the ground:
- -> 750ohm (2x1206) -> PC501 Opton Input -> GND
- In addition to the PC500 opto input, 1kohm
- 5: Quick charger permit signal
- Output from PDM, pulled to ground with 200ohm 1W resistor (2S2P
200ohm 1206)
- 6: Quick charger connection signal
- For PDM up to 12 volts, the charger pulls the ground
- 1000kohm 0.5-1W resistor for P transistor collector, transistor
The emitter current is measured by an opto-isolator PC502 (type M49T) with 12V
the rail connects
- 7: Wrong Name of Datasheet: "Plug in signal"
- Prototype PDM EVSE PWM
- Output from PDM, pulled to ground with 600ohm 0.5W resistor (2P
1200ohm 1206)
- 8: High voltage harness connector detecting circuit signals
- Connected to safety switch stop CN5405p2 (parallel;
- 9: Wrong Name of Datasheet: "EVSE communication (PWM)" [i / o]
- 0ohm with resistance to diode (J1772)
- After the diode signal input
- After the diode 2.74 Ohm to ground (J1772)
- After the diode 1.3k open Collector output (J1773)
- 10: EVSE connection signal [in]
- In Prototype PDM, EVSE connection signal
- 330ohm to 5 volts (J1772)
- 22kohm to the ground and a little cob to the side
- 11: Quick charger communication-H (CAN)
- 12: High voltage harness connector detecting circuit power supply
- Connected to safety switch stop CN5405p1 (parallel;
- 13: Quick charger communication-L (CAN)
- 14: (Not documented) (GND on PCB)
- 15: EV system CAN-H [i / o]
- 16: Quick charger port temperature sensor 2
- Probably 10k25C NTC; one end on the pins 3
- 17: EV system CAN-L [i / o]
- 18: (NC)
- 19: (NC)
- 20: (NC)
- 21: Battery power supply
- 22: (NC)
- 23: Battery power supply
- 24: Power ON power supply

CN5405:
- DC-DC and CHAdeMO auxiliary plate
- JST-S20B-PADSS-1
- Pinout:
CHAdeMO:
- 1: Enclosure Safety Switch End (Direct Switches in Series)
- 2: End of chassis safety switch stop
- 3: F / C 2 gray (contactor right, for common Collector control)
- 4: F / C 1 green (contactor left, for common Collector control)
- 5: F / C 5 red (common fuse for F / C board (1.5A fast)
24V) from CN100 pin1)
- 6: F / C 3 yellow (contactor common)
- According to CHAdeMO spec, should be switched + 12V from charger
- 7: F / C 4 white (Logic power)
- 8: F / C 6 blue (Logic GND)
DC-DC
- 9: GND
- 10: Operating voltage for DC-DC (5V) (Initial 1.0A from R1501 regulator
(entry A1J050))
- 11: GND
- 12: DC-DC pulls the ground if the current limit is exceeded (initial 10k resistor
for pnp transistor base, transistor output for processor)
- 13: NC, the components are missing
- 14: DC-DC pulls the ground in some situation; some kind of voltage limit? (Art. 10k
resistor to pnp transistor base, transistor output
processors as well)
- 15: DC-DC pulls the ground if OK (initial 100ohm low response)
somewhere)
- 16: I2C SCL
- 17: Input for DC-DC: 5V = DC-DC on, 0V = turn on
(Originally 100ohm with a low response to the "E-2" marked five-legged
and port TC7S08F, fed by Renesas and adjacent
"24" marked transistor (npn))
- 18: I2C SDA
- 19: 10k25C NTC under DC-DC converter (on PDM frame) (orig: +)
- 20: 10k25C NTC under DC-DC converter (PDM body) (Origin: GND)

CN5401:
- Charger control
- JST-S16B-PADSS-1
- Pinout:
- 1: + 15V
- max. 300mA (5A charger output) (voltage without load and
with load 15V)
- 2: GND
- separated level # 1, small with common mode choke + 15V
- 3: + 15V
- connected to pin 1
- 4: GND
- connected to pin 2
- 5: ISO7241C # 2 A
- can bind to the ground; 5V = disable CHECK of the chipper
- 6: AC supply relay
- extension pin 1
- 7: ISO7241C # 2 B
- GND = chipper disable, 5V = chopper running CHECK
- 8: AC supply relay
- extension pin 2
- 9: ISO7241C # 2 C
- can bind to ground, 5V = disable CHECK
- 10: SDA
- 11: ISO7241C # 2 D
- output from charger: GND = chopper running, 5V = no k CHECK
- 12: SCL
- 13: ISO7241C # 1 A: 4052 S1
- Standing in 5V measurements but maybe doing something
- 14: ISO7241C # 1 B: 4052 S2
- to switch between the temperature sensor of the PFC and the charger pads
- 15: ISO7241C # 1 C:
- 5V (?)
- 16:?

CN5102:
- JST-S02B-PASK-2
- Relay charge output from charger
- Relay with 832A-1A-FS 12VDC coil, coil resistance 155ohm, current 77mA
- 1: Relay on AC input, connected to pin 6 of CN5401 (+ 15V active)
- 2: Relay on AC input, connected to pin 8 of CN5401 (+ 5.6V active)

CN5403:
- Operating voltage for DC-DC
- JST-S02B-PASK-3
- 1: + 16V (up to 50mA with DC-DC converter up to ~ 1A with 12V charging current)
- 2: NC
- 3: GND (separated # 2, small common mode choke)

CN5404:
- Operating voltage on the output side of the charger
- JST-S02B-PASK-2
- 1: + 16V (max. 30mA (5A charging current)
- 2: GND (separated # 2, big common mode choke over CN4503)


A DC-DC converter
-------------

The disc is controlled by a few detached signals as well as one circuit, IC1514, on I2C
which is MCP4728 at 0x60.

The main rotary controller is UCC2895 controlled by EAP and SS / DISB.
- EAP can pull two different connections to the ground:
- PC1300: Pin 7 active low (output B) of IC1302
- PC1301: pin 1 active low (output A) of IC1302
- One SS / DISB pin can be pulled into the ground:
- Some transistor controlled by PC1500; probably activating PC1500
enabloys the chipper

IC1514: MCP4728 (I2C DAC)
- Output A: Current limit? Combines with resistors to IC1100 pin 3 (1in +)
- Output B: Goes scaled and filtered to the pin of IC1302 5
- Output C: Not connected
- Output D: Not connected

IC1302: NJM2737 (Dual opamp)
- 1: A OUT:
- 2: A IN:
- 3: A IN +:
- 5: B IN +: DAC output B
- 6: B IN-: 100k resistor to pin 7, 10k resistor to IC1100 pin 7
- 7: B OUT: Active low PC1302 (Drives the chip controller to the EAP country)

IC1100: TLE2022 (Precision opamp)
- 1: 1out: H = current below set limit; buffered with transistors CN1501
           the pin 10 so that if the current limit is exceeded, the collector will pull
- 2: 1in: 2out (confirmed current measurement)
- 3: 1in +: Through resistors IC1514 DAC output A (current limit?); 58kohm-> 1out
- 4: GND
- 5: 2in +: IC1504 (MAX4378 current sense amp) output
- 6: 2 -: 3.3k / 1.5k resistance distribution from the outlet to the ground
- 7: 2out: 1-; IC1302 B IN; confirmed current measurement
- 8: Vcc +

IC1102: LMV842 (Dual opamp "K409")
- 1: Aout: Disable PC1500 (active high)
- 2: Ain-: Resistant Clash with 840ohm curl C1116 who can be
           an output voltage measurement filter box or timing beam
- 3: Ain +: Konkka & 560ohm + 3.3k + 68ohm to Ain; 47k with resistance to Aoutti; 47 + 3k
           with resistance to I2C SDA
- 4: V-: GND
- 5: Bin +: C1116
- 6: Bin: 6k to ground, 8.2k to operating voltage, cedar output and ground
- 7: Bout: Active high pulls Q1520 with collector CN1501 down to peg 8
- 8: V +

CN1501:
- Current measurement from the DC-DC output plate
- Control from main charger plate
- Pinout:
- 1: (-> CN5405 19) 10k25C NTC under DC-DC converter (PDM body)
- 2: (-> CN5405 20) 10k25C NTC under DC-DC converter (PDM body)
- 3: (-> CN5405 17) PC1500 control; H = chipper on
- 4: (-> CN5405 18) I2C SDA
- 5: (-> CN5405 15) Output: H = PC1500 disable (Q1521 <- Q1509 <- IC1102)
- 6: (-> CN5405 16) I2C SCL
- 7: (-> CN5405 13) NC, components missing
- 8: (-> CN5405 14) OC output; some kind of voltage limit? (Q1520 <- IC1102 Bout)
- 9: (-> CN5405 11) GND
- 10: (-> CN5405 12) OC Output: Drag if current limit is exceeded (IC1100)
- 11: (-> CN5405 9) GND
- 12: (-> CN5405 10) Operating voltage
- 13: The red-gray pair of red
- 14: The gray of the Punaharma pair
- 15: The gray of the Black Gray couple
- 16: Black in black


Power supply to the original charger processor board
-------------------------------------------------

(names of voltage bars from control_pcb_layered.xcf)

- VCC1: 5V, controlled, produced with IC1501 (R1501 1A LDO)
- CPU Control (# 1, TP219)
- Feeds the DC-DC converter
- VCC2: 5V, always on, produced with IC206 (BD00D0AWHFP 2A LDO)
- Feeds the processor
- Feeds the separator transformer
- VCC3: 12V, always on (possibly via coil and concave)
- VCC4: 5V, transistor-connected VCC2
- CPU Control (# 1, TP219)
- Feed the separator circuits towards the charger and I2C eepromm
- Separator with two separate outputs:
- Output 1: 15V 300mA for charger with common-mode choke PLT10HH9016R0PN (# 1)
- Output 2: 16V, of which:
- 50mA for DC-DC converter (# 2 with its own coaxial choke
PLT10HH9016R0PN)
- 30mA on the output side of the charger (# 2 with its own coaxial choke)
(bit like Kemet SU10VD-20010 but reads R10GE1)
- Control from processor (to RUN pin) (# 1, TP219)

[celeron55]

To control the charger on the internal i2c bus, there's again just a DAC, again with one weird channel and one useful channel.

Cool, just saw this. How do you access that I2C bus?

You do have to connect the wiring as described in the connector pinouts, or alternatively modify the original board to force the signal levels to the required ones that the board won't make for you by default.

Similarly to the other signals you can cut the i2c off from the Renesas microcontroller and add your own master on the i2c. This is what I did. It was a messy process and I mostly improvised it. I might have photos from some of it.

Of course doing something like this doesn't differ a lot from any other "mod chip" style solution that are used in game consoles and whatnot so it might be worth it to look into the optimal spots for cutting traces and attaching a piggyback controller board.

[doobedoobedo]

In order to avoid destroying everything before I've really started I thought I'd best do a pin map of the proprietary leaf connector coming off of the brain board adaptor.

Hope this helps anyone else with one.

[D@F]

nice! someone knows if the original charger could work on a 100s pack ?

[doobedoobedo]

I have batteries!

I contacted Ben (in this thread viewtopic.php?f=12&t=193) and he put me on to the guys he got his cells from.

I'm now the proud owner of 500 EIG C20s, they threw in everything I need to make up 10 10S5P packs from them, and a BMS from MG Electronics (and a bunch of other stuff).

This one of their own packs, in the raw

and ready to go in a car

And how I received the cells

[doobedoobedo]

Just got the motor spinning with FOC control over CAN. Smooth as silk with 60V supply. Very happy right now.

Going to check syncofs tomorrow.

[Igor]

Nice work. Lots of Leaf motors spinning up lately!

[doobedoobedo]

Cheers .

Yes, it's good to see the motors having a second life, plenty of scrap leafs around too.

Syncofs was 500 - no movement between 0 and 1000, slow movement at 1100.

[doobedoobedo]

Been doing some field weakening experiments.

Assuming fweak = rpm/60

The more negative idweak the faster it goes.

[doobedoobedo]

Well I think I've got myself an RX8 to bung all this stuff in. Going to finalise it out at the weekend.