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Battery Pack Enclosures CNC Machining for EV Industry
Battery pack enclosures are precision-machined protective housings that provide structural support, thermal management, and safety containment for lithium-ion cells in electric vehicles and energy storage systems. At Zintilon, we specialize in CNC machining of battery pack enclosures using advanced extrusion processing and welding to achieve exceptional dimensional accuracy, crash safety, and thermal stability for reliable performance in passenger EVs, commercial vehicles, and stationary energy storage installations.
- Machining for complex enclosure geometries and cooling interfaces
- Tight tolerances up to ±0.010 in
- Precision milling, welding & impact-resistant finishing
- Support for rapid prototyping and full-scale production
- ISO 9001-certified EV component manufacturing
Trusted by 15,000+ businesses
Why New Energy Companies
Choose Zintilon
Increased Productivity
Engineers get time back by not dealing with immature supply chains or lack of supply chain staffing in their company and get parts fast.
10x Tighter Tolerances
Zintilon can machine parts with tolerances as tight as+/ - 0.0001 in -10x greater precision compared to other leading services.
World Class Quality
Zintilon provides aerospace parts for leading aerospace enterprises, verified to be compliant with ISO9001 quality standard by a certified registrar. Also, our network includes AS9100 certified manufacturing partners, as needed.
From Prototyping to Mass Production
Zintilon provides CNC machining for battery pack enclosures and related energy storage housing components for EV manufacturers, battery system integrators, and automotive suppliers worldwide.
Prototype Battery Pack Enclosures
Acquire prototypes that perfectly match your design and acquire prototypes of battery enclosures that provide the needed precision. Investigate the structural integrity, thermal management, and crash safety for battery enclosures before full-scale production.
Key Point
Key Point
- Rapid prototyping with high precision
- Tight tolerances (±0.010 in)
- Test design, impact resistance, and sealing early
EVT – Engineering Validation Test
Assess prototypes and iterate enclosure designs rapidly to achieve the required thermal and safety enclosure design criteria. Early identification of issues at this stage allows for an easier process when transitioning to full-scale electric vehicle manufacturing.
Key Point
Key Point
- Validate prototype functionality
- Rapid design iterations
- Ensure readiness for production
DVT – Design Validation Test
Assess performance and design impact on enclosures by investigating and applying various materials during the pre-mass production stage to meet the intended design and protective goals.
Key Point
Key Point
- Confirm design integrity and impact resistance
- Test multiple materials and configurations
- Ensure production-ready performance
PVT – Production Validation Test
Assess battery pack enclosures to determine the feasibility of large-scale production and identify potential gaps in the production process before full-scale production initiation to ascertain consistency and efficiency in production.
Key Point
Key Point
- Test the large-scale production capability
- Detect and fix process issues early
- Ensure consistent part quality
Mass Production
With efficiency and speed while maintaining quality for on-time delivery and safety to the vehicles, provide large-scale, crash-tested battery pack enclosures for battery system manufacturers and electric vehicles.
Key Point
Key Point
- Consistent, high-volume production
- Precision machining for automotive quality
- Fast turnaround with strict quality control
Simplified Sourcing for
the New Energy Industry
Our aviation industry parts manufacturing capabilities have been verified by many listed companies. We provide a variety of manufacturing processes and surface treatments for aerospace parts including titanium alloys and aluminum alloys.
Explore Other New Energy Components
Browse our complete selection of CNC machined components for new energy applications, crafted for precision and long-term reliability. From turbine housings and mounting brackets to battery enclosures and thermal management components, we deliver solutions tailored to the evolving needs of renewable energy and clean technology industries.
EV Industry Battery Pack Enclosures Machining Capabilities
With modern robotic welding cells, CNC machining centers, and automotive machining cells with extensive industry experience, we provide Battery Pack Enclosures CNC Machining for the EV Sector. Engineered composite-reinforced structures and modular enclosure assemblies with integrated thermal management, crash energy absorption, IP67 protection to water ingress, and thermal dissipation to various structures are combined with extruded aluminum housings.
Protection and environmental sealing of battery pack enclosures are provided by precision CNC milling with various other machining operations, including cover plate seal groove machining, friction stir welding, protective coating, as well as thermal cycling validation and crush testing. Each battery pack enclosure is crafted in compliance with FMVSS 305, UN ECE R100 and ISO 6469 EV safety standards with high specific strength materials: extrusions aluminum (6061-T6, 6082-T6), die-cast aluminum, CFRP composite panels, or high-strength steel (DP590, AHSS).
Protection and environmental sealing of battery pack enclosures are provided by precision CNC milling with various other machining operations, including cover plate seal groove machining, friction stir welding, protective coating, as well as thermal cycling validation and crush testing. Each battery pack enclosure is crafted in compliance with FMVSS 305, UN ECE R100 and ISO 6469 EV safety standards with high specific strength materials: extrusions aluminum (6061-T6, 6082-T6), die-cast aluminum, CFRP composite panels, or high-strength steel (DP590, AHSS).
Aerospace
Materials & Finishes
Materials
We provide a wide range of materials, including metals, plastics, and composites.
Finishes
We offer superior surface finishes that enhance part durability and aesthetics for applications requiring smooth or textured surfaces.
Specialist Industries
You are welcome to emphasize it in the drawings or communicate with the sales.
Materials for Battery Pack Enclosures
Our CNC machine shop provides a diverse selection of materials for CNC machining Battery Pack Enclosures for the EV Industry. We assist with rapid prototyping and precision automotive component manufacturing with a focus on crash safety, thermal management, and lightweight metals (10+) and structural composites.
High machinability and ductility. Aluminum alloys have good strength-to-weight ratio, high thermal and electrical conductivity, low density and natural corrosion resistance.
Price
$ $ $
Lead Time
< 7 days
Tolerances
Down to ±0.003 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Steel is a strong, versatile, and durable alloy of iron and carbon. Steel is strong and durable. High tensile strength, corrosion resistance heat and fire resistance, easily molded and formed. Its applications range from construction materials and structural components to automotive and aerospace components.
Price
$ $ $ $ $
Lead Time
< 10 days
Tolerances
Down to ±0.001 mm (routing)
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Stainless steel alloys have high strength, ductility, wear and corrosion resistance. They can be easily welded, machined and polished. The hardness and the cost of stainless steel is higher than that of aluminum alloy.
Price
$ $ $
Lead Time
< 7 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Titanium is an advanced material with excellent corrosion resistance, biocompatibility, and strength-to-weight characteristics. This unique range of properties makes it an ideal choice for many of the engineering challenges faced by the medical, energy, chemical processing, and aerospace industries.
Price
$$$
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Highly resistant to seawater corrosion. The material’s mechanical properties are inferior to many other machinable metals, making it best for low-stress components produced by CNC machining.
Price
$ $ $ $ $
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Brass is mechanically stronger and lower-friction metal properties make CNC machining brass ideal for mechanical applications that also require corrosion resistance such as those encountered in the marine industry.
Price
$$$
Lead Time
< 10 days
Tolerances
Down to ±0.005mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Few metals have the electric conductivity that copper has when it comes to CNC milling materials. The material’s high corrosion resistance aids in preventing rust, and its thermal conductivity features facilitate CNC machining shaping.
Price
$$$
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Due to the low mechanical strength of pure magnesium, magnesium alloys are mainly used. Magnesium alloy has low density but high strength and good rigidity. Good toughness and strong shock absorption. Low heat capacity, fast solidification speed, and good die-casting performance.
Price
$ $ $ $
Lead Time
< 7 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Iron is an indispensable metal in the industrial sector. Iron is alloyed with a small amount of carbon – steel, which is not easily demagnetized after magnetization and is an excellent hard magnetic material, as well as an important industrial material, and is also used as the main raw material for artificial magnetism.
Price
$ $ $ $ $
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed.
Price
$ $ $ $ $
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Let’s Build Something Great, Together
FAQs: Battery Pack Enclosures for EV Industry Applications
Battery pack enclosures are structural, crash-safe casings for lithium-ion battery cells accounting for 20 kWh in plug-in hybrids to over 100 kWh in long-range EVs. Types of battery pack enclosures include skateboard platform enclosures integrated into the vehicle floor structures which support a 300 to 600 kg battery mass, modular enclosures with bolt-together sections for various vehicle sizes, underslung enclosures that maximize interior space, and specialty designs which contain cylindrical cell enclosures for Tesla-style 4680 cells, prismatic cell housing for CATL and LG batteries, pouch cell trays with compression plates, and stationary storage containers for grid-scale applications 100 kWh to 10 MWh.
Extrusions made of aluminum 6061-T6 and 6082-T6 have a specific strength of makes 6061 and 6082 extrusions not just lightweight at 150 to 200 MPa and 2.7 g/cm3 lightweight at 150 to 200 MPa and 2.7 g/cm3, Positional encasements reduce enclosures weight of 40 to 60 percent quarto steel. Furthermore, enclosures provide superior thermal conductivity. Enclosures are not just lightweight at 150 to 200 MPa and 2.7 g/cm3, Positional encasements reduce enclosures weight of 40 to 60 percent quarto steel. Furthermore, enclosures provide superior thermal conductivity. Enclosures are thermally conductive, integrating a cooling system conduit with a dielectric coolant. Enclosures are not just lightweight at 150 to 200 MPa and 2.7 g/cm3. Positional encasements reduce the enclosure's weight by 40 to 60 percent of quarto steel. Furthermore, enclosures provide superior thermal conductivity. Enclosures are thermally conductive, integrating a cooling system conduit with a dielectric coolant. Enclosures are 150 to 200 MPa and 2.7 g/cm3. Positional encasements reduce enclosures their weight of 40 to 60 percent quarto steel. Furthermore, enclosures provide superior thermal conductivity. Enclosures are thermally conductive, integrating a cooling conduit with a dielectric coolant. Enclosures are thermally conductive, integrating a cooling system conduit with a dielectric coolant. Furthermore, enclosures provide superior thermal conductivity. Enclosures are 150 to 200 MPa and 2.7 g/cm3. Positional encasements reduce the enclosures of 40 to 60 percent of quarto steel. Enclosures are corrosion-resistant. Finally, enclosures are corrosion-resistant, supporting a circular economy. Die-cast aluminum offers the ability to create complex geometry for mounting integrated, interconnected design and ribbed structural features.
Large-format CNC milling machines process aluminum extrusions and sheets with a finishing tolerance of ±0.010 inches. Friction stir welding of aluminum sections results in hermetic seals that avoid the thermal distortion and porosity associated with conventional welding. MIG and laser welding techniques are utilized on steel components. The CNC router, as well as waterjet cutting, is used to contour CFRP composite panels. A coordinate drilling system is used to create mounting holes and interconnect cooling passages. The die-casting process is used to produce the complex shapes of aluminum housings. Machining of seal grooves to achieve depth control of ±0.005 inches permits precise sealing of the gasket. Robotic assembly integrates the components of the cooling system, bus bars, and battery management system mounting.
We achieve seal groove dimensions within ±0.005 inches for gasket compression to achieve sealing IP67 rating and permit water ingress of 50 mm per hour for 1 meter during immersion, cooling plate interface flatness of 0.015 inches for reduction in thermal contact resistance to value 0.01°C-cm² per watt, mounting holes positions of ±0.008 inches for attach to the vehicle chassis, wall thickness uniformity of ±0.008 inches for fulfilling crash performance requirements, and a ±0.010 inch overall enclosure dimensions for interface compatibility aimed to achieve. The range of tolerances stabilizes weld joint positioning to ±0.012 inches, controlling interconnection of cooling plates and bus bars.
Yes. Zintilon conducts finite element analysis, validated drop-tested EV battery system rapid prototyping, and offers low-volume production for specialty vehicles and limited production models. Zintilon provides sequential production of 100 to 5000 battery enclosures. Zintilon exclusively provides high-volume production for mass-market EVs, supplying battery enclosures of tens of thousands to hundreds of thousands every year. Zintilon provides full-dimensional inspection via laser scanning with 0.05 millimeter accuracy, and performs IP67 water ingress testing per ISO 20653, thermal shock testing of -40 to +85°C, and vibration testing per ISO 12405. Other material certifications include corrosion resistance per ISO 9227 salt spray exceeding 1000 hours, and tensile strength tested to ISO 9227 for vibrations. Their certifications include corrosion resistance per ISO 9227 salt spray exceeding 1000 hours, and tensile strength and corrosion resistance per ISO 9227 salt spray exceeding 1000 hours.
All components have traceable quality management systems as per ISO 9001. They have passing tests for traceable materials against received design specifications and for compliance with safety standards for electric vehicles, FMVSS 305; EN 60529 (immersion and dust ingress protection IP67); side impact 50 km/h, front 50 km/h and rear 50 km impact battery crash safety - UL 2580; as well as service life of 10 years or 150,000 miles, UN ECE R100, R 100.2, ISO 6469, SAE J2464.
Surface finishing options include clear anodizing of aluminum, achieving 10 to 25 micron thickness per ASTM B580, powder coating achieving 60 to 100 micron dry film thickness with stone chip resistance, cathodic e-coat, and other surface protection systems that meet automotive corrosion protection for 10-year warranty criteria. Specialized protective underbody systems, thermal barrier coatings, electromagnetic shielding, and other coatings as per OEM specifications.
For standard aluminum extruded enclosures for passenger EVs, the lead time is 14 to 20 business days, which includes machining, welding, and coating. More complex die-cast housings that integrate cooling systems take considerably longer, approximately 12 to 16 weeks, due to the additional time required for tooling. However, prototype enclosures utilizing welded fabrication methods allow for completion within a 10 to 14 day time frame, this greatly streamlines the development of the vehicle for validation through crash testing.
Yes, we do design custom enclosures. For example, we design ultra-lightweight CFRP enclosures that reduce the total mass by 50 percent for performance EVs to ease energy density range calculations and also create high-capacity enclosures for commercial trucks and buses that pack 200 to 500 kWh. Other designs are crash-optimized with strategic crumple zones and reinforcement to prevent cell intrusion during a 50 km/h side impact, thermal management integrated enclosures with liquid cooling channels within to maintain cell temperatures within a range of 20 to 40°C, and specialized quick-swap modular enclosures for fleet vehicles that allow a 5-minute battery exchange. Additionally, we have structural battery enclosures that serve as load-bearing chassis components, which reduce vehicle weight by 10 percent, offshore marine enclosures that meet the IP68 rating, and second-life stationary storage enclosures that repurpose automotive batteries.
Enclosures made with precision within ±0.010 inches help guarantee appropriate vehicle mounts that stops the buildup of stress from misalignment that leads to fastener failure and battery displacement during crashes. Precise seal grooves made within ±0.005 inches help achieve seal pack compression which aids in attaining the much sought after IP67 rating to avoid water ingress. Water ingress can cause short circuits and thermal runaway, and moisture intrusion accounts for 15 percent of battery failures. Flat cooling plate interfaces made to within 0.015 inches help minimize thermal contact resistance to below 0.01°C-cm² per watt. This helps in the efficient removal of heat and helps maintain the optimal range of 25 to 35°C within the battery cells, as it prevents capacity degradation. Having a range of 25 to 35°C helps the battery in preventing a loss of battery life, which can happen when the temperature is increased by 10°C. Having a quality lightweight materials enclosure helps with the overall vehicle range by 5 to 10 percent.
With appropriate manufacturing, one can ensure dependable battery protection for electric vehicles that have battery packs ranging between 40 to 100 kWh, and cover distances between 200 and 400 miles on a single charge, while observing crash safety standards that attain 5-star NCAP ratings, managing thermal conditions to preserve battery cycles past 150,000 miles, representing 8 to 10 years of operational life and applications in battery electric vehicles, plug-in hybrids, commercial electric trucks and electric buses, and stationary electric energy storage systems for consumer, commercial, and utility purposes.
With appropriate manufacturing, one can ensure dependable battery protection for electric vehicles that have battery packs ranging between 40 to 100 kWh, and cover distances between 200 and 400 miles on a single charge, while observing crash safety standards that attain 5-star NCAP ratings, managing thermal conditions to preserve battery cycles past 150,000 miles, representing 8 to 10 years of operational life and applications in battery electric vehicles, plug-in hybrids, commercial electric trucks and electric buses, and stationary electric energy storage systems for consumer, commercial, and utility purposes.
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