Rjf: {{PriusPlus History}}

2020-06-14T12:01:05Z

Rjf: {{PriusPlus-Doc_Process|mw-collapsed}}{{TOCright}}

2020-06-14T11:57:30Z

Rjf: rm dup Category:Prius PHEV

2007-10-09T08:51:50Z

rm dup Category:Prius PHEV

Rjf: {{PriusPlus History}}

2006-10-07T02:45:30Z

Rjf: PriusPlus moved to PriusPlus History: making room for new PriusPlus project

2006-10-07T02:29:07Z

PriusPlus moved to PriusPlus History: making room for new PriusPlus project

Rjf: Categories

2006-06-01T04:35:27Z

Rjf: -CalCars Dormant Documents

2006-05-26T09:12:44Z

-CalCars Dormant Documents

Rjf: updated with new images.

2006-03-21T07:52:58Z

updated with new images.

Rjf: Category:PHEV

2006-03-16T11:22:26Z

Category:PHEV

Rjf: Category:Prius PHEV

2006-03-16T10:51:13Z

Category:Prius PHEV

← Older revision		Revision as of 12:01, 14 June 2020
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 [[Category:PHEV]]
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 [[Category:CalCars]]

← Older revision		Revision as of 02:45, 7 October 2006
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 [[Category:Prius PHEV]]
-[[Category:PHEV]]
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← Older revision	Revision as of 02:29, 7 October 2006
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← Older revision		Revision as of 09:12, 26 May 2006
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		+
		+	''See Also:''
		+	* ''[[Prius PHEV Battery Options-CalCars]]''
		+	* ''[[Prius PHEV Schematics-CalCars]]''

	'''[[Prius PHEV]] Prius+ [[:Image:EAA-PHEV-PRIUS-.doc\|Documentation]]([[Media:EAA-PHEV-PRIUS-.doc\|.doc]]) Notes and Instructions'''		'''[[Prius PHEV]] Prius+ [[:Image:EAA-PHEV-PRIUS-.doc\|Documentation]]([[Media:EAA-PHEV-PRIUS-.doc\|.doc]]) Notes and Instructions'''

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 {| align=right cellpadding=10
-| {{EAA-PHEV-Prius-Schematics-small}}
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 |}
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 However, there is also a community of experimenters, schools, and others interested in doing such modifications themselves, and the EnergyCS controller is not available for this purpose.  Fortunately, Dan Kroushl discovered and shared the information that a higher-voltage battery is capable of fooling Toyota’s Battery ECU into giving a higher SOC reading.  I started experimenting with higher voltages of PbA batteries and came up with an algorithm for fooling the Battery ECU in an organized way.  I tried it first with PbA batteries, and only with manual control, but I expected it to work more generally.  It will be described in detail below.
-I have now completed [[Prius PHEV#Schematics_and_Documentation|(3) schematic diagrams]] for a PRIUS+ conversion using this technique, and am working on software to automate the control as well as display and record relevant vehicle information.  This is intended to run first on a laptop computer, then on a PocketPC PDA that can be semi-permanently mounted (and left running) in the car.
+I have now completed [[Prius PHEV Schematics|(3) schematic diagrams]] for a PRIUS+ conversion using this technique, and am working on software to automate the control as well as display and record relevant vehicle information.  This is intended to run first on a laptop computer, then on a PocketPC PDA that can be semi-permanently mounted (and left running) in the car.
 ==Battery Pack==
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 ==High Voltage Circuit==
-[[Image:EAA-PHEV-PRIUS-HighPowerSchematicV1a 060116.png|thumb|right|High Power Schematic]]
+{{PriusPlus High Power Schematic Small}}
-The [[:Image:EAA-PHEV-PRIUS-HighPowerSchematicV1a_060116.png|high voltage circuit]] consists largely of the PHEV battery pack, some contactors, a circuit to emulate the OEM battery’s taps, a charger, and miscellaneous battery support devices.  The OEM battery is not in the circuit and can be removed to reduce the vehicle’s weight by nearly 100 lbs.  However, the circuitry is designed to make reconnecting the OEM battery easy, and it is recommended that it be kept in the vehicle until your conversion’s reliability has been proven to your satisfaction.
 For safety and ease of installation/removal, the battery pack has been divided into two banks, separately fused and used in series but connected together only during operation.  With the current BB battery pack, this corresponds to the two physical rows of battery modules.  This arrangement should hopefully work for many other batteries as well, though the Electro Energy pack is specialized and requires very different high voltage and control electronics.
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 Note that operations at very low and very high temperatures have not yet been verified or planned for.  In fact, my PRIUS+ needed to be switched back to its OEM battery pack before it would operate at all at freezing temperatures.  There are potential issues of non-NiMH battery packs having different temperature coefficients than the Battery ECU is programmed for.
-[[Image:EAA-PHEV-PRIUS-BatteryTapEmulatorSchematicV1a 060118.png|thumb|right|Battery Tap Emulator]]
+{{PriusPlus Battery Tap Emulator Schematic Small}}
-The Battery ECU uses '''voltage taps''' from the OEM battery pack to verify battery integrity and charge balancing.  The 168-cell battery is thereby electrically divided into 14  12-cell subpacks (each subpack consists of two 6-cell prismatic modules).  Even if your battery pack is similarly divisible, you will need to use a resistive divider like the '''[[:Image:EAA-PHEV-PRIUS-BatteryTapEmulatorSchematicV1a_060118.png|Battery Tap Emulator Board]]''' to simulate these battery taps for the Battery ECU.  Once the taps are emulated, the Battery ECU can be fed any voltage as its perceived battery voltage.  Battery ECU SOC spoofing is done by raising this perceived voltage above the actual battery voltage.  Once you have emulated the battery taps, you will need to provide as necessary for your battery pack’s charge balancing and actual SOC management.  As this can be done in many ways for the many battery pack possibilities, it is outside the scope of this document.
+The Battery ECU uses '''voltage taps''' from the OEM battery pack to verify battery integrity and charge balancing.  The 168-cell battery is thereby electrically divided into 14  12-cell subpacks (each subpack consists of two 6-cell prismatic modules).  Even if your battery pack is similarly divisible, you will need to use a resistive divider like the '''[[Template:PriusPlus Battery Tap Emulator Schematic|Battery Tap Emulator Board]]''' to simulate these battery taps for the Battery ECU.  Once the taps are emulated, the Battery ECU can be fed any voltage as its perceived battery voltage.  Battery ECU SOC spoofing is done by raising this perceived voltage above the actual battery voltage.  Once you have emulated the battery taps, you will need to provide as necessary for your battery pack’s charge balancing and actual SOC management.  As this can be done in many ways for the many battery pack possibilities, it is outside the scope of this document.
 ==Control Board==
-[[Image:EAA-PHEV-PRIUS-ControlSchematicV1 060118.png|thumb|right|SOC & Control Schematic]]
+{{PriusPlus Control Schematic Small}}
-The control board ([[:Image:EAA-PHEV-PRIUS-ControlSchematicV1_060118.png|Low Power Control Schematic]]) provides the overall logic for a PRIUS+.  It has a drive interlock and a charge interlock relay.  The charge interlock relay can be jumpered to be energized whenever the charger is connected to the battery pack, or, if the charger is built-in and always connected, when the charger is powered.  The charge interlock relay prevents driving while charging by disengaging HVRL1 and thereby disconnecting the two halves of the battery pack.  The drive interlock relay energizes HVRL1 only when the vehicle is in READY mode.
 TTL inputs to J3 control activation of EV-only mode, fans, and/or BMS spoofing via opto-isolators.  An isolating power supply supplies 30V, an adjustable portion of which can be added to the battery voltage when necessary to provide BMS SOC spoofing.  These TTL levels can be provided from a computer’s parallel port, independent of the computer’s power supply.  Battery voltage is applied at HVJ6.  Additional voltage, adjustable via R7, is added when RL2 is energized, and the resulting voltage is applied at J8, where the Battery Tap Emulator Board plugs in.

← Older revision		Revision as of 11:22, 16 March 2006
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−	[[Category:Prius]]	+	[[Category:Prius PHEV]]

PriusPlus History - Revision history

Rjf: {{PriusPlus History}}

Rjf: {{PriusPlus-Doc_Process|mw-collapsed}}{{TOCright}}

Rjf: rm dup Category:Prius PHEV

Rjf: {{PriusPlus History}}

Rjf: PriusPlus moved to PriusPlus History: making room for new PriusPlus project

Rjf: Categories

Rjf: -CalCars Dormant Documents

Rjf: updated with new images.

Rjf: Category:PHEV

Rjf: Category:Prius PHEV