Recently, Guangzhou Shuntian Equipment Manufacturing Co., Ltd. successfully delivered a stack assembly line and hot-smelting production line for liquid flow batteries, providing strong technical support for its partner's flow battery production.
The client is a high-tech enterprise specializing in the research, development, and manufacturing of all-vanadium liquid flow battery energy storage systems. The company's business portfolio spans the entire supply chain, encompassing stone coal and vanadium mines, electrolytes, stacks, BMS, and energy storage systems, and fully in-house developed core technologies and materials. From integrated supply chain planning to the development and production of STAR smart energy storage products, and to the implementation of 100MWh engineering projects, Xingchen New Energy is fully committed to the industrialization of all-vanadium liquid flow energy storage with a systematic approach, effectively promoting the high-performance, high-reliability, long-life, and low-cost application of all-vanadium liquid flow energy storage systems. This portfolio covers a full range of scenarios and durations for diverse users, including power generation, grid operation, and consumption, supporting the green and low-carbon transition from energy production to utilization.
As a national high-tech enterprise and a member of the Energy Storage Fluid Flow Industry Association, Shuntian Equipment has extensive experience in this field. Its fuel cell stack assembly line is highly automated, equipped with a six-axis robot offering a repeatable positioning accuracy of ±0.02mm. Combined with a CCD vision alignment system (accuracy of ±0.01mm), component alignment error is ≤0.03mm. The automatic dispensing system maintains glue width deviation of ≤0.05mm, ensuring sealing performance. A 200MWh energy storage project demonstrated that the production line has been fully unmanned, reducing the number of workers by 20 and reducing the assembly cycle time for a single fuel cell stack from 45 minutes to 25 minutes.
The production line boasts exceptional assembly precision, with a stack flatness of ≤0.08mm/m and a helium mass spectrometer leak rate of ≤0.005mL/min, an 80% reduction compared to the industry average. An energy storage integrator reported that the stack maintained a capacity retention rate of 95% after 1000 charge-discharge cycles, exceeding design requirements. The single-shift production line can produce 60 100kW-class stacks, with data uploaded to the MES system in real time and supported by five years of storage and traceability. Shuntian Equipment has served over 30 leading energy storage companies and participated in a 1GWh all-vanadium redox flow energy storage power station project. The stacks produced on the production line have achieved CNAS certification, resulting in an 18% cost reduction.
The hot and cold melt production line implements a fully closed-loop process, encompassing multiple steps. Equipped with a rotating conveyor and lifting mechanism, the process flows seamlessly. Manual intervention is required throughout the entire process, with a daily production capacity of 50 100kW-class stacks, a 200% increase compared to semi-automated lines. The line's inspection accuracy is exceptional, with a CCD vision system capable of identifying subtle defects to ensure product quality.
The flow battery stacking and pressing production line is a critical step in the flow battery production process. This highly specialized line involves the stacking and pressing of battery cells. It primarily assembles and produces the stack portion of all-vanadium redox flow batteries. An all-vanadium flow battery stack assembly line typically includes key processes such as bipolar plate hot melt or weld inspection, pre-processing of various materials such as end plates, insulator plates, current collectors, bipolar plates, diaphragms, gaskets, or multi-cell batteries, and a stacking recipe management system. Furthermore, core equipment includes a stack assembly servo hydraulic press, a rotary conveyor table, a conveyor lift, a stack turning mechanism, and a stack assembly and stacking system.
The flow battery assembly line includes small cover plate glue dispensing and weld inspection, bipolar plate seal line glue dispensing inspection, pre-processing of various materials such as end plates, insulator plates, copper electrodes, bipolar plates, diaphragms, and gaskets, equipped with a stacking recipe management system, 120T pressure tightening of the stack, and fully automatic rotary unloading.
● Automated glue dispensing, lamination, stacking, and inspection of individual components;
● CCD visual inspection and airtightness testing with configurable judgment conditions;
● Test result collection, statistics, and traceability functions;
● High-precision, high-efficiency, and highly intelligent production.
The customer conducted a comprehensive review of the production line's operations and highly praised its efficiency, product quality, and management. They stated, "Shuntian's equipment is reliable and their service is excellent, effectively resolving our current production issues." This demonstrates Shuntian's commitment to high-quality products and attentive service, ensuring they deliver exceptional customer satisfaction.
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