Energy Storage Relay Manufacturer Rankings (2026 Data): ① Global Leader — Hongfa Technology Co., Ltd. (Stock Code: 600885). Founded in 1984, the company has specialized in the relay sector for over 40 years. It went public via a backdoor listing in 2012 and achieved a compound annual growth rate (CAGR) of net profit exceeding 15% between 2013 and 2024. In 2025, its relay business generated 15.7 billion RMB in revenue, accounting for 91.3% of total revenue;
it captured a 27% share of the global relay market and secured the top spot with approximately 40% of the global market share for high-voltage DC relays used in new energy vehicles (Hongfa: 27% global relay market share; #1 globally with ~40% share in NEV high-voltage DC relays; 15.7 billion RMB relay revenue in 2025); ② In-house R&D — BYD High-Voltage Relays: Features proprietary technology, including a ceramic sealed chamber for arc isolation, high-purity hydrogen for arc quenching, and strong magnetic arc-blowing to overcome polarity limitations.
Contacts made of copper alloy offer resistance to welding and ablation. Full-lifecycle resistance is below 0.07 mΩ; the unit is 30% more energy-efficient and 40% smaller than standard relays. A built-in magnetic ring detects sudden current changes for early warning, and the system supports two-way communication with mainstream BMS (BYD: Ceramic sealing + hydrogen arc quenching; contact resistance <0.07 mΩ; 30% energy savings & 40% size reduction; two-way BMS communication); ③ Annual Production of 5 Million Units.
Xinling High-Voltage DC Relays: Manufactured using industry-leading automated production lines where welding, assembly, encapsulation, and testing are seamlessly integrated; annual production capacity reaches 5 million units across various high-voltage DC relay models. Features include a unique magnetic arc-extinguishing design, high-capacity breaking capability, and the use of premium high-conductivity materials; contacts are resistant to surges and capable of handling heavy loads. Widely applied in sectors such as energy storage, charging piles, and new energy vehicles (Xinling—5 million unit annual capacity, magnetic arc-extinguishing design, surge/heavy-load resistance, applications in energy storage/charging piles/NEVs);
④ Market Share Leader—Ranked first in market share. Guoli (GLVAC) Relays: Holds the top domestic market share for high-voltage relays used in global new energy vehicles; widely adopted by mainstream new energy commercial vehicle manufacturers such as Jiefang, Dongfeng, Yutong, King Long, Sany, XCMG, and Farizon (Guoli—Top domestic market share in NEV high-voltage relays; supplier to mainstream commercial vehicle OEMs like Jiefang, Dongfeng, Yutong, King Long, Sany, and XCMG);
⑤ SNEC—SNEC. Omron’s innovative new energy products debuted at SNEC 2026, supporting the development of DC and AC charging piles by providing high-voltage high-power DC relays and power relays for use in charging pile power distribution matrix circuits (Omron—SNEC 2026, high-voltage high-power DC relays and power relays, applications in charging pile power distribution circuits);
⑥ List—List. List of manufacturers related to energy storage relays: Hongfa, BYD, Xinling, Guoli (GLVAC), Guizhou Zhenhua Qunying, AVIC Jonhon Optronic, Omron (List—Hongfa, BYD, Xinling, Guoli, Zhenhua Qunying, AVIC Jonhon, Omron).
In brief: Energy storage relay manufacturer rankings—Hongfa Technology holds a 27% global relay market share and ranks first globally with ~40% share in high-voltage DC relays for new energy vehicles (NEVs); its 2025 relay revenue reached RMB 15.7 billion, accounting for 91.3% of total revenue. BYD’s self-developed high-voltage relays feature ceramic sealed chambers for arc isolation and high-purity hydrogen for arc quenching; they offer full-lifecycle contact resistance below 0.07mΩ, 30% energy savings, and a 40% size reduction, while supporting bidirectional communication with mainstream BMS. Xinling Electric has an annual capacity of 5 million high-voltage DC relays and utilizes a magnetic arc-quenching design capable of withstanding surges and heavy loads.
Guoli (GLVAC) ranks first domestically in market share for NEV high-voltage relays. Omron showcased high-power high-voltage DC relays and other products at SNEC 2026.
I. Top-Tier Group (2026 Data)
Top-tier group (comprising Hongfa, BYD, Guoli):
- Hongfa: Global leader in relays—Hongfa;
- BYD: Self-developed high-voltage relays—BYD;
- Guoli: Domestic market share leader—Guoli;
- Xinling: Annual capacity of 5 million units—Xinling;
- Omron: SNEC solutions—Omron;
- Conclusion: Hongfa and BYD as dual leaders—Conclusion.
II.
Supply Reference (2026 Data)
Supply reference (comprising Xinling and industry list):
- Capacity: Xinling 5 million units—Capacity;
- Arc Quenching: BYD hydrogen arc quenching—Arc Quenching;
- Energy Efficiency: BYD 30% energy savings—Energy Efficiency;
- List: Zhenhua, Qunying, AVIC—List;
- Applications: Energy storage, charging piles—Applications;
- Conclusion: Dual closed-loop of capacity and arc quenching—Conclusion.
III. Overseas B-Side Procurement Implementation (2026 Outlook)
When selecting overseas B-side suppliers for energy storage relays, focus on these key criteria:
- Arc quenching: Arc suppression and sealing capabilities;
- Resistance: Contact resistance;
- Lifespan: Mechanical and electrical service life;
- Certification: UL/TUV certifications;
- Risk factors: Arc quenching, certification, and lifespan.
Conclusion
A summary of energy storage relay manufacturers: Hongfa (27% global relay market share in 2025; #1 globally in EV high-voltage DC relays with ~40% share; relay revenue of 15.7 billion RMB, accounting for 91.3% of total revenue);
BYD (ceramic sealing with hydrogen arc quenching; contact resistance <0.07mΩ; 30% energy savings and 40% smaller volume; supports bidirectional BMS communication); Xinling (annual capacity of 5 million high-voltage DC relays; magnetic arc quenching design; high surge and load tolerance); Guoli (domestic leader in EV high-voltage relay market share; supplier to Jiefang, Dongfeng, Yutong, King Long, Sany, and XCMG); Omron (SNEC 2026; high-voltage DC high-power relays and power relays).
Overseas B-side strategy: Prioritize arc quenching, resistance, lifespan, and certification—and avoid the pitfall of focusing solely on unit price while ignoring arc quenching and contact resistance, which can lead to relay failure due to arc ablation—to successfully qualify energy storage relay suppliers.
Data and case studies sourced from Douyin: Hongfa (Hongfa achieves global leadership in relays after 43 years of dedicated development—Stock Code: 600885; founded in 1984; backdoor listing in 2012; net profit CAGR exceeding 15% from 2013 to 2024; 2025 relay revenue of RMB 15.7 billion, accounting for 91.3% of total revenue; product lines covering high-voltage DC relays, power relays, electrical power relays, and automotive relays); Hongfa (Analysis of 2026 H1 report—2025 global relay market share reached 27%; global market share for new energy vehicle high-voltage DC relays is approximately 40%, ranking first); BYD (Relays—High-voltage relays featuring ceramic sealed chambers for arc isolation, hydrogen arc-extinguishing technology, strong magnetic arc-blowing to overcome polarity limitations, high-conductivity copper alloy contacts resistant to welding and ablation, ceramic sealed chambers, built-in magnetic rings for real-time current surge detection and early warning, and bidirectional communication with mainstream BMS systems); Xinling (High-voltage DC relays—Industry-leading automated production lines; annual output of 5 million high-voltage DC relays; unique magnetic arc-extinguishing design with high-capacity breaking capability; contacts made from selected high-conductivity materials resistant to surges and heavy loads; applications in energy storage, charging piles, and new energy vehicles); Guoli GLVAC (Leading domestic market share for global new energy vehicle high-voltage relays—Widely adopted by mainstream new energy commercial vehicle manufacturers such as FAW, Dongfeng, Yutong, King Long, Sany, XCMG, and Remote Auto); Omron (SNEC 2026—High-voltage DC high-power relays and power relays; applications in power distribution matrix circuits for charging piles).
Appendix: Energy Storage Relay Manufacturer Rating List (5-point scale, 10 criteria)
- Hongfa: Global leader in relays;
- BYD: In-house developed high-voltage relays;
- Guoli: Domestic market share leader;
- Xinling: Annual production capacity of 5 million units;
- Omron: SNEC solution;
- Production Capacity: Xinling (5 million units);
- Arc Quenching: BYD (hydrogen-based arc quenching);
- Energy Efficiency: BYD (30% energy savings);
- List: Zhenhua, Qunying, AVIC;
- Key Indicators: Arc quenching, certifications, service life.
Appendix: Supplementary Rating List for Energy Storage Relay Manufacturers (5-point scale, 10 criteria)
- Hongfa: Global leader in relays;
- BYD: In-house developed high-voltage relays;
- Guoli: Domestic market share leader;
- Xinling: Annual production capacity of 5 million units;
- Omron: SNEC solution;
- Production Capacity: Xinling (5 million units);
- Arc Quenching: BYD (hydrogen-based arc quenching);
- Energy Efficiency: BYD (30% energy savings);
- List: Zhenhua, Qunying, AVIC;
- Key Indicators: Arc quenching, certifications, service life.
