List of Things Going in the Enclosure

Battery

Battery Module

• Makes up the main pack

• 9 modules in series, each module is 4S8P, each cell is a 21700 LG M50T battery

9

Bolted to the bottom of the enclosure, 2 bolts for each module (diagonal holes).

AUX Battery

• Back-up batteries for power-up sequence and in case main pack fails

• Heat shrunk 10S1P, each cell is a NiMH battery.

1

Inside a separate 3D printed box. Box itself is secured on top of a module

Boards

AFE

• Handles interactions with main pack

• Reads cell voltages & temperatures.

• Performs load balancing

3

Mounted on top of three modules using bolts (using heat set inserts on the modules).

Current Sense

• Reads pack current

1

BMS Carrier

• Brain of the BMS system. Logs voltage, current, temperature, triggers BMS switch.

• Used for SOC model

• Watches our for overvoltage, overcurrent, undervoltage, undercurrent

1

DCDC

• Converts pack voltage (HV) to voltage usable for low voltage electrical components (like fans, boards, lights, horn, etc.)

1

Mounted on top of a module using an adapter plate. DCDC goes onto adapter plate, adapter plate goes onto the module.

Relay

Main Pack Relay

• Electrically isolates battery pack

• Part of Main Power Switch (as defined by ASC)

2

Solar Relay

• Electrically isolates battery pack

• Part of Main Power Switch (as defined by ASC)

1

Motor Switch

• Used for facilitating pre-charge

1

Fuse

Main Fuse

• Protects components in case of current surge

1

Cooling Components

Noctua NF-F12 IPPC 3000 Fans

• Cooling main pack (hopefully)

2

Air Baffles

• Three types of air baffles

• Prevents airflow going over the modules

4

Inlet

• 3D Printed inlet for connecting to air duct

2

Outlet/Fan Holders

• 3D Printed outlet for holding outlet fans

2

Connector

Molex MX150L 12 Circuit Panel Mount Plug

(MFG. P/N: 194290031)

• For LV connections including boards & AUX

1

Molex MX150L 4 Circuit Panel Mount Plug

(MFG. P/N: 194290025)

• 1 for HV connection to solar

• 1 for extra in case we need more LV connections

2

SB120 Anderson Connector

(MFG. P/N: 6810G1-BK)

• For HV connection to motor

1