Electronic Systems Documentation¶

Core Systems¶

Middle Driver Board (MDB)¶

• Part Number: MDB-PCB-01-003 Rev. F
• Main Processor: Freescale i.MX6 UL
• Core system controller
• Manages:
• Power distribution
• System communications
• Battery management
• Motor control interface

Key Components¶

• SIM7100E cellular module
• CE certified
• GSM/GPRS connectivity
• Power management ICs
• Multiple 30-pin edge connectors
• CM1: Left edge
• CM3: Right edge
• CM9: Bottom edge
• CM10: Top edge

Features¶

• 4+ layer PCB design
• Controlled impedance traces
• Ground plane isolation
• Thermal management
• EMI protection structures
• Professional assembly quality

Dashboard Controller (DBC)¶

• Part Number: DBC-PCB-01-009 Rev. E
• Main Processor: MCIMX6U7CVM08AC (Freescale i.MX6)
• Components:
• NAND Flash Memory
• RAM modules
• Power management
• Interfaces:
• Mini-USB connector
• Molex 8x2 connector
• Test points (ONOFF, BM1, BM0)

Motor Controller (ECU)¶

• Manufacturer: BOSCH/Lingbo
• Power Rating:
• unu 4kW: 4kW peak / 2.7kW continuous
• unu 3kW: 3kW peak / 1.9kW continuous
• Features:
• Encrypted CAN bus
• Regenerative braking control
• Temperature monitoring
• Current limiting

Battery Systems¶

Main Battery¶

• Configuration: 14s7p using INR22/71-7 cells
• Specifications:
• Nominal voltage: 50.8V
• Max charging voltage: 58.2V
• Nominal capacity: 35Ah/1778Wh
• ~5000mAh per cell
• Features:
• NFC communication
• Built-in status LEDs
• Protection circuits
• Battery Management System

Auxiliary Battery (AUX)¶

• 12V lead-acid battery
• Used for core system power
• Charged via DC/DC converter

Connectivity Battery (CBB)¶

• Lithium-ion battery
• Powers connectivity systems
• Features protection circuitry
• Dedicated power management

DC/DC Converter¶

• Input: Main battery voltage (50.8V)
• Output: 12V system power
• Powers vehicle electronics

Communication Systems¶

Battery NFC System¶

• NT3H2111 NFC chip
• Features:
• 64-byte SRAM
• 888-byte EEPROM
• Field detection signal
• I²C interface
• Used for:
• Battery authentication
• Battery data communication

Keycard NFC System¶

• PN7150 NFC chip
• I2C interface (default: /dev/pn5xx_i2c2)
• Supports ISO-DEP protocol
• Used for:
• Keycard authentication (unlocking/locking)

Keycard Status LED Controller¶

• LP5662 LED controller
• I2C interface (default: /dev/i2c-2)
• Controls tri-color LED status indicator:
• Green: Authentication success
• Yellow: Card detected/authenticating
• Red: Authentication failed/blocked card

CAN Bus¶

• Used for motor control
• Encrypted protocol
• Real-time control data

Cellular Module¶

• SIM7100E modem
• Features:
• 4G connectivity
• GPS/GNSS
• MFF2 SIM soldered to MDB