Battery Cover Plate Market Report: the market is projected to climb to US$ 3,386 million by 2031

According to the recent report from QYResearch, the global Battery Cover Plate market, a critical component of lithium-ion batteries for electric vehicles and energy storage, continues to expand rapidly. In 2024 the market size reached US$ 1,292 million with global production of about 600 million pieces at an average price of US$ 2.5 each. The market is projected to climb to US$ 3,386 million by 2031, growing at a CAGR of 15.6% from 2025 to 2031.

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Latest Market Data

· Market size: US$ 1,292m (2024); US$ 3,386m (2031)

· CAGR: 15.6% (2025-2031)

· Production volume: ~600 million pieces (2024)

· Average price: US$ 2.5 per piece

· Technology focus: multi-stage explosion-proof vents, aluminum thin-wall lightweighting, integrated electrical/thermal features

· Market structure: China leads with more than 50% share; Japan and Korea dominate the high-end segment

· Policy environment: U.S. tariff framework in 2025 and Europe's countervailing duties are reshaping global sourcing and investment decisions

Leading Companies

Shenzhen Kedali Industry
SANGSIN EDP
Zhenyu Technology
Wuxi Jinyang New Material
Zhongrui Electronic Technology
Shenzhen Everwin Precision
Changzhou Red Fairy
Zhejiang Zhongze Precision Technology
Shinheung SEC
Fuji Spring
SCHOTT
Jie Jing Precision
Hefei Lixiang
SuZhou Sumzone
Guangdong Hoshion Industrial Aluminium
Shenzhen Xindongda
Ningbo Fangzheng

Classification

By Type

· Round

· Square

By Application

· Prismatic Battery

· Cylindrical Battery

Company Updates and Achievements (2025)

Samsung SDI started mass production of large-format 46-mm cylindrical cells in April 2025, requiring new-generation cover plates with higher venting precision and stronger reinforcement.

Shenzhen Kedali secured a contract to supply more than 200 million prismatic cases and covers to Automotive Cells Company in Europe through 2030, alongside localized manufacturing expansion in Hungary.

SANGSIN EDP together with Shinheung SEC entered North American supply chains, providing can and cap parts for the Samsung SDI-GM battery joint venture.

SCHOTT expanded deployment of glass-to-metal sealed battery lids, achieving leak rates below 1×10-8 mbar·L/s to meet growing demand for ultra-long service life in EV and ESS.

Fuji Spring advanced its precision safety valve technology for top covers, ensuring burst pressures remain within tightly controlled ranges for improved battery safety.

Product Highlights

Shenzhen Kedali Industry - Prismatic Cover Plate

· Precision stamped and laser-welded aluminum alloy cap assembly

· Integrated explosion-proof valve and SSD flip tab design

· Major supply agreement with ACC in Europe exceeding 200 million sets

SANGSIN EDP - Prismatic Can & Cap Set

· Thin-wall deep-drawn aluminum structure (~0.17 mm thickness)

· High-strength lightweight design to increase cell energy density

· Selected to supply Samsung SDI-GM joint venture

Fuji Spring - Safety Valve for Cover Plates

· Press-formed safety valve with controlled burst pressure

· Ensures rapid pressure release at defined thresholds

· Designed for large-scale mass production consistency

SCHOTT - Hermetic Glass-to-Metal Sealed Lid

· Leak rate below 1×10-8 mbar·L/s

· High insulation resistance and long service life

· Applied in EV and stationary storage requiring >10 years durability

Shinheung SEC - Automotive Prismatic Cap Assembly

· Advanced venting and sealing solution for EV batteries

· Proven multi-stage safety design

· Secured supply contracts with Samsung SDI-GM

Verified Downstream Users

CATL
BYD (FinDreams Battery)
LG Energy Solution
Samsung SDI
Panasonic Energy
SK On
EVE Energy
CALB
Gotion High-Tech
Farasis Energy
Envision AESC
Tianjin Lishen
Sunwoda
Northvolt

Market Trends

Large Cylindrical Battery Demand

The introduction of 46-mm cylindrical batteries such as Tesla's 4680 and Samsung SDI's April 2025 rollout is reshaping cover plate requirements. These cells, with capacities exceeding 20 Ah, demand thicker sealing beads and precisely calibrated venting mechanisms.

CTP and CTC Integration

Cell-to-Pack and Cell-to-Chassis designs are eliminating module structures. This reduces parts count but increases reliance on cover plates to provide robust safety functions. By 2025, nearly half of new EVs sold in China already incorporate CTP, making cover plate reliability a critical differentiator.

Hermetic Sealing Becomes Mainstream

For energy storage and high-cycle EV platforms, hermetic sealing using glass-to-metal technology is gaining traction. Leak rate requirements below 1×10-8 mbar·L/s are becoming common in RFQs, setting new industry standards.

Pack-Level Venting Systems

Automakers are increasingly adopting dual-layer safety strategies. Cell-level cover plates provide first-stage venting, while pack-level membranes open at ~40 mbar differential pressure to prevent catastrophic failure propagation.

Localization Under Trade Pressure

Tariff adjustments in the U.S. and Europe are accelerating local manufacturing. Chinese leaders such as Kedali are building European plants, while Korean suppliers like SANGSIN EDP and Shinheung SEC are expanding in North America to serve joint ventures.

Lightweight Materials and Process Innovation

Aluminum thin-wall structures down to 0.17 mm and advanced laser welding are enabling lighter covers without compromising safety. This trend supports both EV range improvements and cost competitiveness.

Tighter Safety Standards

Industry safety standards are converging on stricter thresholds for vent pressure and sealing performance. Automakers and regulators demand repeatable results across millions of units, reinforcing barriers for new entrants and rewarding companies with deep process expertise.

Conclusion

The Battery Cover Plate industry in 2025 is at a strategic inflection point. With EV adoption accelerating, structural innovations like CTP, and geopolitical trade shifts, demand is both scaling rapidly and becoming more technically demanding. Companies that combine localized production, proprietary sealing technologies, and lightweight high-strength materials are set to lead this next chapter of growth.

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