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titleMeeting Minutes 2023/11/07

Timelining

Complete

Pending

Optional

Controller Board

MSXV PD

  • Dec 2

Solar

  • Jan

Center Console

Pedal

  • Nov 11

MCI

Carrier

  • Nov 25

MSXIV PD

Current Sense

  • Nov 25

Steering

MSXIV AFEs + LTC6820

Mockup creation: Feb - Mar/Apr

Functional Testing: Apr - May

Vehicle Fault States

Battery

Parameter

Source

Condition

Action

Cell Voltage

BMS AFE - LTC6811

One cell group falls under: 2.5V

  • BPS Fault Minor

One cell group rises above: 4.25V

  • BPS Fault Major

One cell group is imbalanced by greater than 0.5V

  • BPS Fault Major

Pack Current

BMS Current Sense - MAX17261

Pack current rises above 58.2A

  • BPS Fault Minor

Pack current falls below -27.08A

  • BPS Fault Minor

Cell Temperature

BMS AFE - LTC6811 (cell + ambient)

BMS Current Sense - MAX17261 (cell)

Ambient temperature rises above xxC

  • BPS Fault Major

Cell temperature rises above xxC

  • BPS Fault Major

Pre-charge time

BMS Carrier CB

Pre-charge takes too long

  • Failure to complete state transition, err code on display

Lose BMS

Power Distribution

BMS hard fault

  • Shut down BMS AUX power to cut relays, keep BMS DCDC power on for fans

BPS Fault:

  • Relays open (one IO per relay):

    • Main relay pos

    • Main relay neg

    • Pre-charge relay

    • Solar relay

  • BPS Strobe External

  • BPS Indicator Center Console

  • Cut MCI

    • Send message to PD to disable MCI LS, in the event that regen was commanded to prevent it from keeping the HV bus energized

  • Display error code on centre console

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titleMeeting Minutes 2023/09/20

PVDR Battery Test Plan Review

Solar Testing

...