Heyi Energy Co,.ltd Company Profile

HEYI ENERGY operates a modern 10,000-square-meter production facility, staffed by over 1,000 skilled employees. The factory houses five dedicated lithium battery assembly lines, including:

• Two fully automated lines for high-efficiency, large-scale production

• Two semi-automated lines offering flexibility for customized orders

• One pilot line exclusively for sample development and small-batch prototyping

To ensure precision, consistency, and scalable capacity, our facility is equipped with a full suite of state-of-the-art manufacturing and testing equipment, including:

• Laser welding machines for high-precision battery tab and busbar connections

• Automatic cell sorting and grading systems for capacity, voltage, and internal resistance matching

• Advanced BMS programming and testing platforms for integrated communication and protection logic validation

• High-voltage insulation testers and comprehensive battery pack test benches to verify safety and functionality

• Multi-channel charge-discharge aging cabinets, supporting full-cycle performance testing and reliability screening

• MES production management system for real-time traceability and quality control

Every stage of production—from cell matching and module assembly to BMS installation and system integration—is managed by experienced technicians and monitored under strict quality standards.

With a balanced mix of automation, flexibility, and skilled craftsmanship, HEYI ENERGY ensures efficient lead times, consistent quality, and strong delivery performance for clients across energy storage, electric mobility, telecom, and industrial applications.

At HEYI ENERGY, we pride ourselves on our strong OEM/ODM capabilities, offering fully customized lithium battery solutions to clients around the world. Our product portfolio includes residential and commercial energy storage systems, power batteries for electric vehicles and industrial equipment, and ultra-low temperature lithium battery solutions.

We provide end-to-end customization services—from performance analysis, structural design, and 3D modeling to electrical schematic development, BMS integration, CANbus communication support, and thermal management engineering. Every project is tailored to the specific needs of the application, ensuring optimal performance, safety, and reliability.

Our factory conducts rigorous safety and reliability testing, and we support clients with global compliance certifications such as CE, UN38.3, MSDS, and more. Additionally, we offer comprehensive private labeling services, including packaging, documentation, and after-sales support, helping our clients expand their market presence and strengthen their brand identity.

Our OEM/ODM battery solutions are widely used in solar storage, smart homes, e-mobility, telecom backup, and other energy-intensive sectors, where performance, quality, and customization truly matter.

HEYI ENERGY operates a highly specialized R&D system that supports rapid development and deployment of advanced lithium battery technologies. Our research capabilities are structured to serve diverse application scenarios, ranging from electric mobility and energy storage to specialized industrial and low-temperature environments.

Our core R&D strengths include:

• Multi-disciplinary engineering teams covering electrochemistry, mechanical design, thermal systems, embedded systems, and communications

• Custom battery architecture design, including modular pack configurations, voltage and capacity scaling, and thermal propagation control

• Proprietary BMS development, enabling precise state-of-charge (SOC), state-of-health (SOH), and fault diagnostics, with support for CAN, RS485, and customized communication protocols

• Thermal simulation and hardware-based thermal management design, including passive and active cooling strategies

• Rapid prototyping workflows, supported by in-house 3D modeling, electrical simulation, and sample assembly

• Reliability engineering, including lifecycle testing, vibration and drop testing, temperature cycling, and IP-grade sealing verification

• Cross-standard compliance readiness, aligned with UN38.3, IEC, CE, UL, and other regional requirements

From concept validation to mass production, we deliver fully engineered solutions backed by a structured development framework, stringent quality assurance, and iterative design refinement. Our R&D team is deeply involved at every stage, ensuring that each product is not only manufacturable, but also meets real-world demands in performance, safety, and durability.

Whether developing battery packs for EVs, off-grid solar systems, portable energy storage, or mission-critical equipment, our integrated approach shortens development cycles and accelerates market readiness—helping our clients lead with innovation.