Introduction to ESS-VP Technology

2023-04-14
Recently, Yuanhe Energy’s ESS-VP energy storage system integration technology was awarded the Technology Innovation Award at the 7th International Energy Storage Innovation Conference (ESIC2023). What exactly is this technology? This article provides a brief introduction.
Introduction to ESS-VP Technology
ESS-VP (Vertical Pack) battery system integration technology integrates battery cells into vertical packs in a highly efficient, layered manner. These vertical packs are slid into cabinets to form independent modular battery systems, together with electrical high-voltage boxes and control boxes (including edge calculators).
ESS-VP is equipped with module-level high-efficiency liquid cooling plates, and integrates module-level fire protection, real-time cell diagnosis, and early safety warning algorithms. Based on ESS-VP technology, battery packs can be installed without the need for battery racks, enabling the system energy density to increase by more than 20% compared with conventional liquid cooling solutions.
Each ESS-VP unit is fitted with sliding rollers at the bottom, which can support the easy plugging and unplugging of battery packs weighing over 300kg. The modular battery system based on ESS-VP features standard interfaces, and can be adapted to meet diverse customer requirements through stacking and parallel arrangement.
By slightly adjusting the height of the packs or the width of the cooling plates, ESS-VP technology can easily accommodate battery cells of different models and sizes. As an innovative product platform, ESS-VP facilitates rapid innovation in system integration technology and accelerates product R&D progress.
  • Innovative Features of VP Technology
Vertical Structural Design，The pack structure replaces battery racks, cutting costs while boosting energy density. The highly platformized design, based on a layered vertical layout, is compatible with battery cells of varying specifications from different manufacturers, as well as suited for both high-rate and low-rate applications.
  • Module-level Thermal Management
The vertical design enables layered thermal management of modules, reducing mutual heating between cells. With the specially designed liquid cooling system, the system temperature difference can be controlled within 2K, which significantly improves cell temperature consistency and lowers the system’s levelized cost of storage (LCOS) throughout its life cycle.
  • Three-layer Safety Design for Packs
  1. Real-time cell diagnosis and early warning
  2. Module-level layered fire-resistant isolation
  3. Pack-level perfluorohexanone fire suppression system, with an optional water spray fire protection system
Simple Production Process

Battery cell modules can be directly slid into cabinets from the side via assembly lines and fixtures, eliminating the need for hoisting. This reduces assembly line power consumption, simplifies production procedures, and improves pack manufacturing efficiency.The sliding-in method adopted for integrating packs into cabinets dispenses with forklifts and cranes, further enhancing system integration efficiency.
  • Flexible System Integration
The unified design of vertical packs and modular converters enables quick coupling and decoupling of AC and DC sides.The vertical pack design greatly simplifies cabinet structure by doing away with conventional battery racks, cutting cabinet integration costs by 5%–10%.
  • Convenient Operation and Maintenance
Vertical packs feature a sliding and pull-out design, which allows for easy extraction and insertion with simple fixtures. This delivers great convenience for subsequent system operation and maintenance, and addresses the common challenge of heavy conventional packs that are difficult to maintain.The VP battery modular system supports flexible expansion through stacking and parallel arrangement. It is easy to transport, has low foundation requirements, and requires almost no complex civil engineering work.
  • Energy Density Increased by Over 20%
The vertical pack system integration technology minimizes internal structural complexity and maximizes space utilization. Taking the 100kW/215kWh system as an example, compared with mainstream outdoor cabinets of the same power and capacity on the market, the volumetric energy density of the vertical pack battery system is increased by more than 20%.
  • Application Fields of ESS-VP
The VP battery system is a modular energy storage product developed through innovative designs at both the pack and system levels.Benefiting from its compact and sleek form factor, rapid production and assembly process, convenient maintenance, improved power density, as well as the comprehensive enhancement of environmental control and safety performance, this product is not only suitable for commercial and industrial energy storage and large-scale energy storage systems, but also boasts strong competitiveness in the international market, presenting enormous potential for promotion and application.

Beijing Yuanhe Energy will adhere to its philosophy of making electricity cleaner and energy smarter and develop this product into a star offering.
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