In the harsh operating environments of mining and construction sites, robotic arms at battery-swapping stations frequently jam due to insufficient assembly precision; in port feeder operations, locking mechanisms fail to engage because machining tolerances exceed specifications; and in urban battery-swapping stations, components show signs of rust and deterioration within just a year due to shoddy workmanship—the issues of ‘poor product quality and inadequate craftsmanship’ in charging and swapping equipment are becoming a hidden obstacle to the new energy sector.These seemingly minor manufacturing defects not only cause equipment failure rates to soar and service lives to be shortened, but also impose high operational and maintenance costs on operators, significantly diminish the user experience, and hinder the industry’s high-quality development.

Poor craftsmanship triggers a chain reaction, continuously undermining the reliability of charging infrastructure

The core value of charging and swapping equipment lies in its “stability, durability and efficiency”, yet poor craftsmanship directly undermines this core: Insufficient machining precision of mechanical components leads to positioning errors and jerky movements during swapping, reducing the success rate of commercial vehicle swapping by more than 15%;Non-standard assembly processes result in uneven force distribution on locking mechanisms, making them prone to jamming failures in high-frequency operational scenarios, with an average annual downtime per station exceeding 80 hours; the use of inferior materials and crude processing techniques means that in harsh environments such as mines and ports, equipment may suffer from corrosion and component wear within six months, leading to O&M costs 30–50% higher than those of high-quality equipment.For commercial vehicle operators, equipment failures caused by crude manufacturing processes can result in downtime losses of thousands of yuan per hour; for passenger vehicle battery swap stations, frequent equipment failures directly undermine user trust, leading to a customer attrition rate exceeding 20%. Refining manufacturing processes is no longer merely a ‘bonus’, but a ‘must-have’ for energy-supply equipment to establish itself in the market, directly determining both equipment reliability and operational profitability.

Precision Craftsmanship: The Lifeline of Charging Infrastructure

The root cause of the crude craftsmanship in charging equipment lies in the severe disconnect between traditional production models and the industry’s high-quality demands: Firstly, a focus on “capacity over quality” – some enterprises, in their rush to capture market share, simplify production processes, lack standardised technical specifications, and rely on manual assembly, leading to the accumulation of errors; Secondly, a lack of inspection systems – the absence of professional testing equipment and end-to-end inspection procedures makes it impossible to detect subtle defects during processing and assembly;thirdly, a disconnect between R&D and production, where insufficient process validation during the R&D phase results in core component designs that are incompatible with manufacturing processes; and fourthly, lax supply chain management, where the procurement of components lacks strict standards, making it difficult to guarantee quality at the source. This traditional model, which “prioritises speed over precision and functionality over detail”, stands in sharp contrast to the practical requirements of charging equipment, which demands “high-frequency operation, adaptability to multiple scenarios, and long-term reliability”.To resolve this contradiction, it is necessary to comprehensively build refined manufacturing capabilities across the production system, testing standards, R&D validation and supply chain management.

End-to-End Precision Control: Forging Highly Reliable Charging Equipment

Nengyi Xing addresses the core pain point of the energy-supply industry—the disconnect between traditional production models and high-quality demands—through its end-to-end precision manufacturing system. By tackling the industry’s challenges of crude equipment craftsmanship and insufficient reliability across four key dimensions, the company delivers highly reliable energy-supply equipment that meets the requirements of high-frequency operation, multi-scenario adaptability and long-term service life.

In response to the industry’s extensive production model that prioritises capacity over quality, the company has established a 20,000 m² standardised manufacturing workshop. It has implemented end-to-end production SOPs and a lean assembly system. By utilising proprietary tooling and jigs alongside standardised installation processes, the company has standardised the entire production workflow, replacing non-standard manual operations to eliminate cumulative assembly errors. This approach achieves a dual improvement in both capacity and quality, with an annual production capacity of up to 500 battery swapping stations and 20,000 core components.

To address the industry’s shortfall in testing systems, the company has established a comprehensive quality control framework. Equipped with specialised testing equipment such as coordinate measuring machines, it strictly enforces quality inspection procedures at every stage—from Incoming Quality Control (IQC) and In-Process Quality Control (IPQC) to Outgoing Quality Control (OQC). The company has independently developed dedicated inspection tools and testing systems, whilst conducting multi-dimensional validation through CAE simulation analysis, vibration testing and battery road testing. This enables the early detection of minute defects during manufacturing and assembly, ensuring controllable product quality throughout the entire lifecycle.

To address the industry-wide issue of a disconnect between R&D and production, the company relies on an in-house R&D team comprising over 40% of its workforce to achieve full-stack in-house development. Process validation and mass-production adaptation are completed simultaneously during the R&D phase, whilst design optimisation is driven by manufacturing engineering, ensuring a high degree of alignment between core component design and production processes, thereby closing the loop from technological R&D to mass production.

To address the industry’s pain point of lax supply chain management, the company has established a systematic supply chain management model. Through group-wide centralised procurement and long-term partnerships with strategic suppliers, we secure high-quality sources of materials. We have established strict standards for material qualification, supported by digital supply chain operations and a localised support system, thereby fortifying the quality defence line for components at the source and forging highly reliable charging equipment through meticulous, end-to-end control.

Looking ahead, Nengyi Xing will continue to pursue its vision of ‘Making Energy Replenishment Smarter’, using precision manufacturing to empower energy replenishment across all scenarios. We are committed to providing robust and reliable equipment support for the global energy transition. By leveraging our highly reliable energy replenishment equipment, produced through end-to-end precision manufacturing, we will strengthen the foundations of our energy replenishment services, achieving cost reduction, efficiency gains and sustained profitability!