ESS Connectors by Yonggui: Reliable Power Interfaces for Energy Storage

Energy storage systems (ESS) are the backbone of the modern energy transition and industrial applications. For maximum efficiency and safety, absolutely reliable connection technology is essential. 

Every contact resistance means energy loss. As an experienced partner for electronic components, alfatec GmbH & Co. KG supplies specialized ESS connectors and battery storage components from Yonggui Electric.

Our portfolio is designed for high current, long service life, and easy integration into your ESS, from residential to utility-scale systems. Ensure the performance of your battery systems with proven Yonggui quality. 

Yonggui Product Portfolio for Energy Storage Systems (ESS)

alfatec offers a wide range of Yonggui connectors specifically developed for the diverse requirements of energy storage applications. Yonggui combines high-current expertise with the specific needs of ESS. 

 

 

Already know what you're looking for?

Click here to go directly to our selection and data sheets for product series in the Energy Storage Systems section.

To the series search

High-Current Connectors for ESS: 

  • ESC-HP Series (High Power): Designed for high-current applications in ESS racks and containers. Enables safe and efficient connections between battery modules and inverters.
    • Current ratings: 80 A, 120 A, 150 A, 200 A, 250 A, 300 A, and more upon request
    • Features: Touch-safe (often IP2X), 360° rotatable for flexible cable routing, robust locking, low contact resistance
    • Materials: High-grade plastics for housings, silver-plated contacts for optimal conductivity
  • YG196-380 Series: Complements the high-current portfolio with specific connection solutions for power distribution within ESS.
  • ESC-M10B / ESC-M16B Series: Rugged busbar connectors for direct mounting on battery terminals or busbars using M10 or M16 threaded bolts.
    • Features: Very high current capacity, minimal contact resistance, easy installation
    • Materials: High-conductivity copper alloys 

 

 

Signal & Combo Connectors for ESS: 

  • YGC1052 / YGC1040 Series: Commonly used for module-to-rack connections, combining power and signal contacts for battery management systems (BMS).
    • Features: Coding, latching mechanisms, compact form factor
  • YGC583-RJ45 Series: Designed for reliable communication signal transmission in ESS. This RJ45-format connector is optimized for harsh environments and ensures data connectivity to the BMS (e.g., CAN bus or Ethernet).
    • Features: Standardized interface, optional enhanced protection 

System Solutions: 

  • Custom Cable Assemblies: alfatec offers complete cable harnesses tailored to your layout and specifications, combining the appropriate Yonggui connectors with high-current or signal cables. 

 

Advantages of Yonggui ESS Connectors
Maximum Efficiency: Minimal contact resistance reduces energy loss and heat generation, improving overall system efficiency
High Safety: Touch protection, secure locking, and high-quality insulation materials ensure safe operation under high voltage and current
Reliability & Durability: Designed for high mating cycles and harsh environments (temperature, vibration) to support long ESS lifespans
Ease of Use: Features like rotatability, coding, and clear locking mechanisms simplify installation and prevent errors
Scalability & Modularity: Plug-in solutions simplify assembly, maintenance, and expansion of modular ESS
Application Areas
Battery Module Connections: Secure and efficient linking of modules into strings or racks
Rack Interconnection: Connecting racks to each other and to the central DC bus
Inverter Interface: High-current connection between battery storage and inverter(s)
Containerized ESS: Robust internal wiring for large-scale storage systems
BMS Communication: Reliable signal transmission for battery monitoring and control
Grid Connection: Components for DC-side connection of grid-tied storage systems
Applicable to all ESS scales: Residential ESS, Commercial & Industrial ESS, Utility-Scale ESS

Our Partner for Energy Storage Systems

Yonggui Electric

Yonggui Electric (Zhejiang Yonggui Electric Equipment Co., Ltd.) is a leading manufacturer of electrical connection components with a strong focus on technological innovation and quality. With extensive experience, especially in the fields of railroad connectivity, renewable energy and electromobility, Yonggui has established itself as a reliable global supplier. Its products are characterized by precision, durability and compliance with the strictest industry standards. alfatec is proud to offer Yonggui's high-quality plugs, sockets and system solutions.

Go to the manufacturer

Manufacturer-Specific Strengths:

  • Power Electronics Focus: Deep understanding of high-current applications 
  • Quality Assurance: Rigorous testing and certifications such as IATF 16949 and ISO 9001 
  • Customization: Ability to develop tailored solutions for specific ESS requirements 

alfatec & Yonggui: Your Experts for ESS Connection Technology

Choose alfatec as your partner for Yonggui ESS connectors and benefit from: 

  • Technical Expertise: We understand the challenges of the energy storage market and provide expert guidance 
  • Broad Portfolio: Access to specialized Yonggui solutions for power and signal 
  • System Solutions: Support for designing and delivering custom cable assemblies 
  • Reliable Logistics: Efficient sourcing and delivery for your projects 

Leverage the synergy of Yonggui’s innovative products and alfatec’s comprehensive service for the success of your energy storage systems. 

Request your personalized quote now

See for yourself the quality and performance of our ESS connectors. Request a no-obligation quote today or download the data sheets.

alfatec – your partner for high-quality electronic components

As your expert partner for electronic components, alfatec supports you in selecting the right ESS connectors for your applications. We offer comprehensive advice and are happy to answer any questions you may have about power modules.

Do you have questions about our ESS connectors or would you like a personal consultation? Feel free to contact us.