What is the Difference Between EV Pack and Module?
Release time:
2025-06-27
In the world of electric vehicles (EVs), "Module" and "Pack" are two key structural units of a battery system, but they refer to different stages of battery integration.
What is an EV Module and an EV Pack?
In the world of electric vehicles (EVs), "Module" and "Pack" are two key structural units of a battery system, but they refer to different stages of battery integration.
An EV battery module is a subassembly that contains multiple battery cells arranged in a specific configuration (series or parallel) and enclosed in a protective casing. Modules help improve safety, manageability, and scalability of battery systems.
An EV battery pack is the final integrated system that includes several modules along with the Battery Management System (BMS), cooling systems (e.g., water-cooling plates), structural enclosures, wiring harnesses, and safety components. The pack is what gets installed into the EV and powers the vehicle.
In short: Cells → Modules → Pack
Features of EV Battery Modules and Packs
EV Battery Module Features
Composed of 6–24+ cells
Includes structural casing and thermal interface materials
Easier to replace or service
Designed for modularity and heat control
EV Battery Pack Features
Contains multiple modules
Integrated with BMS, cooling, sensors, and protection circuits
Ready-to-use unit for EV installation
Often customized per vehicle platform
Applications of Modules and Packs in EVs
Modules are the building blocks of packs and are used in:
Passenger EVs and e-bikes
Industrial AGVs and forklifts
Battery energy storage systems (BESS)
Packs are the final product and are directly applied in:
Electric cars, trucks, and buses
Hybrid vehicles
High-voltage energy storage containers
The modular structure allows manufacturers to create packs with different voltages, capacities, and shapes by varying the module count and arrangement.
How to Select the Right EV Battery Pack or Module System?
When selecting between a battery module or pack solution, consider the following:
Application Requirements – Choose a pack for end-use deployment; choose modules if you're developing a custom pack.
Thermal Management – Ensure compatibility with air or liquid cooling systems.
Voltage & Capacity Needs – Customize the number and type of modules to meet your performance targets.
Serviceability & Modularity – Consider how easy it is to replace or maintain individual modules.
Integration Capabilities – Confirm pack-level compatibility with the EV’s powertrain, BMS, and space constraints.
Supplier of EV Module & Pack Assembly Solutions – Huiyao Laser
Huiyao Laser (Luoyang) Technology Co., Ltd. is a leading Chinese manufacturer specializing in automated equipment for EV battery module and pack assembly. With strong R&D support from Dalian University of Technology (Luoyang Institute), Huiyao Laser offers comprehensive solutions across:
Battery Cell Sorting & Assembly Lines
Laser Welding Systems for Modules & Packs
Automated Prismatic, Pouch, and Cylindrical Module Lines
Intelligent Leak Testing and End-of-Line Inspection
Integrated PACK Assembly Solutions
We provide customized, turnkey production lines tailored to meet clients' demands for efficiency, flexibility, and precision. Our equipment integrates advanced automation, vision guidance, and real-time data feedback to support mass production of high-quality battery modules and packs.
Headquarters:
No. 988 Guanlin Road, Longxu Industrial Park, Luolong District, Luoyang City, Henan Province, China
R&D Center:
Baoneng Science & Technology Park, Bantian, Longgang District, Shenzhen, Guangdong, China
Website: www.huiyaolaser.com
Choose Huiyao Laser — your reliable partner for intelligent EV battery manufacturing.
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