Introduction: Addressing the Core Electric Vehicle Battery Engineering Pain Point – Space Utilization and Structural Integrity
For electric vehicle (EV) battery manufacturers, automotive OEMs, and energy storage system integrators, the fundamental challenge of battery pack design remains constant: how to maximize energy density (kilowatt-hours per liter of volume) while ensuring structural integrity and thermal safety. Traditional battery architectures—using modules assembled from individual cells—waste significant volume on module frames, cooling plates, and interconnecting busbars. The blade battery concept, pioneered by BYD in 2020, represented a paradigm shift. By eliminating the intermediate module structure and arranging elongated cells directly into the battery pack, blade batteries achieve volume utilization exceeding 60%, rivaling the energy density of ternary batteries with the lower cost and superior safety of lithium iron phosphate (LFP) chemistry. However, this innovation created a new manufacturing challenge: producing the ultra-thin, long, sealed aluminum casings that house blade cells with the required precision, consistency, and cost-efficiency. The roll forming blade battery cell housing emerged as the solution. Using a continuous roll forming process—involving rolling, welding, and straightening of aluminum strip—manufacturers can produce EV battery housing with exceptional dimensional accuracy, thin walls, and structural strength. As the blade battery market expands from its BYD origins to multiple EV manufacturers, understanding the dynamics of this high-growth niche market is essential.
Global Leading Market Research Publisher QYResearch announces the release of its latest report *”Roll Forming Blade Battery Cell Housing – Global Market Share and Ranking, Overall Sales and Demand Forecast 2026-2032″*. Based on current situation and impact historical analysis (2021-2025) and forecast calculations (2026-2032), this report provides a comprehensive analysis of the global Roll Forming Blade Battery Cell Housing market, including market size, share, demand, industry development status, and forecasts for the next few years.
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Market Size & Growth Trajectory (2025-2031): Explosive 31.6% CAGR from a Small Base
According to QYResearch’s comprehensive analysis based on historical data from 2021 to 2025 and forecast calculations through 2032, the global market for Roll Forming Blade Battery Cell Housing was valued at USD 210 million in 2024 and is projected to reach a readjusted size of USD 1,480 million by 2031, representing a compound annual growth rate (CAGR) of 31.6% during the forecast period from 2025 to 2031.
*[Executive Insight for CEOs and Investors: The 31.6% CAGR represents explosive growth from a small base, reflecting the rapid adoption of blade battery technology across the EV industry. From near-zero production before 2020, roll-formed blade battery cell housing shipments exceeded 130 million units in 2024, with market value projected to multiply seven-fold by 2031. This growth trajectory is driven by the expanding application of blade batteries beyond BYD to multiple EV manufacturers and into adjacent markets including energy storage systems and construction machinery.]*
Product Definition: Understanding Roll Forming Blade Battery Cell Housing
The Blade Battery, derived from the lithium iron phosphate (LFP) power battery launched by BYD in 2020, derives its name from the flat, slender shape of its individual cells. The core innovation of the blade battery lies in its module-free design (Cell-to-Pack, or CTP), where cells are directly arranged into battery packs, eliminating the traditional module structure and improving volumetric energy density by 30-50% compared to conventional module-based packs.
“Roll Forming Blade Battery Cell Housing” refers to the aluminum casing for blade batteries manufactured specifically through a roll-forming process. The core feature of this manufacturing method is that, through continuous rolling, welding, and straightening processes, aluminum strip is processed into an ultra-thin, long, sealed shell that provides both structural support for the battery pack and physical protection for the internal cell components (electrodes, separator, and electrolyte).
Technology Evolution: Why Roll Forming Supersedes Extrusion and Stamping
As the core carrier of the global transportation energy revolution, the Electric Vehicle industry has shifted from a policy-driven to a market- and technology-driven development stage. In 2024, China’s EV sales reached 12.866 million units, a year-on-year increase of 35.5%, ranking first in the world for ten consecutive years. Batteries, as the core components of EVs, directly affect vehicle performance, range, safety, and user experience.
From the current battery form of EVs, three main types exist: ordinary square shell batteries, cylindrical batteries, and blade batteries. Ordinary square shell batteries, with high structural strength and good grouping efficiency (volume utilization exceeding 60%), remain the battery form with the highest market share, with representative manufacturers including CATL, CALB Group, and Gotion High-tech. Cylindrical batteries, exemplified by Tesla (with LG as a primary supplier), offer improved heat dissipation efficiency and higher single-cell capacity compared to square shell designs.
Blade batteries represent the most recent evolution, derived from the progression of battery architecture from Cell-to-Module (CTM) to Cell-to-Pack (CTP) and ultimately to Cell-to-Body (CTB). BYD developed blade batteries specifically to improve battery pack space utilization and increase energy density without compromising safety.
The battery cell housing—the protective aluminum casing—is a critical structural component. According to different manufacturing processes, blade battery cell housing can be divided into extrusion molding, stamping molding, and roll forming types. Extrusion and stamping processes are older production methods. Due to their inherent process limitations—extrusion struggles with ultra-thin wall sections, stamping creates residual stress and material thinning at corners—and material performance constraints, they cannot meet the demanding range and safety requirements of modern EVs and are being gradually eliminated from the market.
Roll forming not only overcomes the defects of both extrusion and stamping processes but also resolves material performance limitations. The continuous nature of roll forming enables consistent wall thickness, excellent surface finish, and high production throughput. According to QYResearch analysis, roll forming will become the mainstream process for blade battery cell housing in the EV market moving forward.
Competitive Landscape: A Concentrated Market with Limited Suppliers
Currently, the number of roll-formed blade battery cell housing manufacturers is only in the single digits, making this a highly concentrated market. Major players include Shandong XinHeyuan, Shenzhen Kedali, Ningbo Zhenyu Technology, Fuzhixin New Energy Technology, GUANGZHOU LINGLONG TUBING TECHNOLOGY, Tai’an Dingtai Automotive Technology, Zhejiang Zhongze Precision Technology, Fischer Group, UNION ALUMINUM, and Jiangsu Otepas New Energy Technology.
According to QYResearch verified data, the shipment volume of roll-formed blade battery cell housings exceeded 130 million units in 2024. Of this total, Shandong XinHeyuan occupies approximately 60% of the market share, making it the dominant supplier in this specialized niche. The high concentration reflects the technical barriers to entry: roll forming lines for ultra-long, thin-walled aluminum profiles require significant capital investment and proprietary process expertise.
Product Segmentation: Long Blade vs. Short Blade
Roll-formed blade battery cell housings can be divided into long blade and short blade products according to cell length.
Long Blade Batteries are dominated by BYD’s original blade battery design. The BYD Han EV, first equipped with blade batteries in March 2020, achieved a range of 605 kilometers—reaching the same endurance level as high-energy-density ternary battery electric vehicles. By the end of 2024, BYD’s cumulative blade battery installed capacity exceeded 200 gigawatt-hours (GWh). According to QYResearch data, roll-formed long blade battery housings account for nearly 90% of market share in 2024.
Short Blade Batteries are represented by Honeycomb Energy and, more recently, entrants including CALB and Geely. Short blade housings are developing rapidly at a high growth rate, driven by the recognition that blade architecture benefits apply across multiple cell lengths and vehicle platforms. The flexibility to optimize cell length for specific vehicle pack geometries is expanding the addressable market.
Application Segmentation: BEV Dominates, PHEV Grows, Energy Storage Emerges
From an application perspective, Battery Electric Vehicles (BEV) represent the most important downstream market. In 2024, BEVs accounted for approximately 85% of the roll-formed blade battery housing market share. Plug-in Hybrid Electric Vehicles (PHEVs) accounted for approximately 10% of market share. The Others category—including energy storage systems, construction machinery, and marine applications—has also entered trial production and is developing rapidly.
*[Exclusive Market Observation – Q1 2025 Update: Energy storage represents a significant growth vector for roll-formed blade battery housings beyond the EV market. Stationary energy storage systems for grid-scale applications benefit from the same space utilization advantages as EVs. Several Chinese energy storage integrators have initiated pilot projects using blade battery architecture, creating a new demand channel for roll-formed housings independent of automotive cycles.]*
BYD’s Pioneering Role and the Technology’s Diffusion
In March 2020, blade batteries began mass production at BYD’s Chongqing Fudi Battery Factory. By the end of 2024, BYD’s blade battery installed capacity had exceeded 200 GWh, representing a staggering scale of production. While BYD remains the largest user of blade batteries, the technology has diffused beyond its originator. Honeycomb Energy has commercialized short blade products, and both CALB and Geely have entered the short blade market.
Future Outlook (2025-2031): Broad Market Development Space
In the future, with the coordinated development of long and short blade batteries and the expansion of cross-field applications—including EVs, energy storage systems, and construction machinery—the roll-formed blade battery cell housing market will experience broad market development.
The shift from Cell-to-Module to Cell-to-Pack represents a permanent architectural change, not a passing trend. As more EV manufacturers adopt CTP or CTB architectures, the demand for blade-compatible cell housings will grow. Roll forming, as the enabling manufacturing process for ultra-thin, high-precision aluminum housings, will capture the majority of this growth.
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