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Discussion History

Battery Pack

Assembly

Sealed IP67 enclosure holding lithium cells in modules with a fuse, contactors and a slave BMS, roughly 60–90 kWh per pack. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Battery Pack parts and their functions

9 top-level parts · 600 parts in total · full bill of materials below
Battery Pack parts diagram: 1 cell module, 2 slave BMS board, 3 HV contactor, 4 HV pack fuse, 5 pack enclosure, 6 pack busbar, 7 pack current sensor, 8 fastener set, 9 o-ring set. 600 parts in 9 top-level items.
Battery Pack parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Cell Module 5 parts 8× Cell module of prismatic LFP or NMC cells
2 Slave BMS Board 4 parts 1× Slave cell-monitoring board per pack
3 HV Contactor 2× Main positive and negative HV contactors
4 HV Pack Fuse 1× High-voltage pyro or blade pack fuse
5 Pack Enclosure 1× Sealed aluminium pack housing
6 Pack Busbar 4× Copper interconnect busbars
7 Pack Current Sensor 1× Hall or shunt pack current sensor
8 Fastener Set 1× Module mounting and lid bolts
9 O-Ring Set 1× Enclosure lid sealing gasket

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

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Bill of materials for Battery Pack

9 top-level lines · 18 rows shown · 600 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Cell Module 5 parts electric-bus-battery-module 8× 8 73 assembly
1.1 Prismatic Lithium Cell electric-bus-prismatic-cell 24× 192 · part
1.2 Cell Interconnect Busbar electric-bus-cell-busbar 23× 184 · part
1.3 Module End Plate electric-bus-module-endplate 2× 16 · part
1.4 Cell Balance Harness electric-bus-balance-harness 1× 8 · part
1.5 Cell Spacer Pad electric-bus-cell-spacer 23× 184 · part
2 Slave BMS Board 4 parts electric-bus-bms-slave 1× 1 5 assembly
2.1 Bare PCB pcb-bare 1× 1 · part
2.2 Microcontroller mcu 1× 1 · part
2.3 SMD Passive (R/C/L) smd-passives 1× 1 · part
2.4 Connector connector 2× 2 · part
3 HV Contactor electric-bus-pack-contactor 2× 2 · part
4 HV Pack Fuse electric-bus-pack-fuse 1× 1 · part
5 Pack Enclosure electric-bus-pack-enclosure 1× 1 · part
6 Pack Busbar electric-bus-pack-busbar 4× 4 · part
7 Pack Current Sensor electric-bus-current-shunt 1× 1 · part
8 Fastener Set fastener-set 1× 1 · part
9 O-Ring Set oring-set 1× 1 · part

Where the battery pack is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $1–$500. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳CATL
catl.com ↗
Ningde, CN Li-ion cell & pack maker 5,000 cells 8–12 wks
🇨🇳EVE Energy
evebattery.com ↗
Huizhou, CN Li-ion cell maker 5,000 cells 8–12 wks
🇮🇳Amara Raja
amararaja.com ↗
Tirupati, IN Batteries & energy 5,000 cells 8–12 wks
🇸🇬Durapower
durapowergroup.com ↗
Singapore Li-ion battery systems 5,000 cells 8–12 wks
🇨🇳BYD
byd.com ↗
Shenzhen, CN EV & battery manufacturer 5,000 cells 8–12 wks