With the rapid adoption of the battery-swapping model for new energy vehicles, the advantage of ultra-fast recharging in 3–5 minutes has been widely recognised by the market; however, poor electrical contact remains a core challenge that the industry cannot avoid. Industry data shows that over 60% of battery-swapping faults are directly related to poor electrical contact: at best, this leads to interruptions in the swapping process and failed vehicle recharging; at worst, it significantly delays the timeliness of trunk line transport and mining operations;in severe cases, they can cause connector burnout, electrical damage to battery modules and chargers, and even pose safety hazards such as short circuits and fires. Particularly in commercial vehicle battery swapping scenarios, where operating conditions in mines, ports and outdoor stations are harsh and daily swapping frequencies are high, the issue of poor contact is even more pronounced, having become the core bottleneck constraining the large-scale adoption of the battery swapping model.

Four Key Criteria Defining Reliability Standards for Battery Swapping Electrical Connections

The reliability of electrical connections has never been solely about a single connector meeting performance standards, but rather the coordinated stability of the entire battery swapping process. It directly determines the operational efficiency, equipment lifespan, safety thresholds and profit potential of battery swapping stations. A truly reliable solution capable of addressing the industry’s pain points must be anchored in four core criteria: Firstly, millimetre-level precision in alignment to eliminate insertion and removal deviations at source;secondly, long-term durability, ensuring contact performance remains unaffected by high-frequency insertion and removal; thirdly, adaptability to all operational environments, guaranteeing stable operation under harsh conditions; and fourthly, end-to-end intelligent protection, enabling early fault warning and proactive safeguards. These four benchmarks form the core R&D logic underpinning Nengyi’s fully in-house battery swapping technology.

The Four Core Dilemmas Underlying the Industry’s Intractable Pain Points

Currently, most battery swapping solutions in the industry remain unable to fundamentally resolve the issue of poor contact. The root cause lies in four irreconcilable underlying contradictions, which directly cap the potential for improving connection reliability. Firstly, the lack of coordination between mechanical positioning and electrical connection: most manufacturers focus solely on the parameters of the connectors themselves, whilst neglecting the precision control of vehicle positioning and locking/unlocking mechanisms. Mismatches during docking directly result in insufficient contact, leading to poor connectivity. Secondly, the conflict between high-frequency usage and structural durability: commercial vehicle battery swap stations involve frequent plugging and unplugging throughout the day, causing rapid wear and tear on standard connectors and an increase in contact resistance; the industry generally lacks adaptive wear-resistant and sealed structural designs.Thirdly, there is a conflict between harsh operating conditions and protection capabilities. Outdoor environments such as mines and ports, characterised by rain, snow, dust and salt spray corrosion, readily cause oxidation of connector contact surfaces and the ingress of contaminants; the protective design of most products is unable to adapt to such complex scenarios;Fourthly, the conflict between reactive maintenance and proactive early warning: the industry generally adopts a reactive ‘repair after failure’ model, lacking real-time monitoring and early warning capabilities; minor issues are allowed to escalate into major faults, ultimately causing irreversible electrical damage to equipment.

Fully in-house developed technology, solving connection reliability challenges across the entire chain

At the mechanical docking level, Nengyi Xing utilises a millimetre-level precision positioning system to eliminate docking misalignment at source.Our proprietary vehicle positioning module operates effectively in adverse weather conditions such as rain and snow, ensuring precise positioning once the vehicle has come to a complete stop; overhead battery swap stations are equipped with intelligent gantry robots that utilise vision and laser positioning technologies to achieve precise battery alignment and foreign object detection; chassis-mounted battery swap stations are fitted with dedicated locking/unlocking machinery and RGV transport mechanisms, enabling millimetre-level precision during battery installation and removal, thereby completely eliminating poor contact caused by misalignment.

At the hardware level, Nengyi Xing ensures long-term durability through highly reliable structural design. Its fully in-house developed battery swap connectors cover multiple specifications and models, perfectly compatible with mainstream battery brands such as CATL and AVIC Lithium Battery;Combined with an adaptive lubrication and sealing mechanism, the system achieves 30,000 cycles of continuous operation without failure. Coupled with a stable pneumatic locking mechanism, this ensures constant contact pressure at the connectors, significantly reducing wear and the rise in contact resistance caused by high-frequency plugging and unplugging. The high-strength structural design enhances the overall station’s structural integrity by 5%, thereby reinforcing connection reliability from the hardware foundation.

In terms of environmental adaptability, Nengyi Xing employs a comprehensive protective design to address complex operating conditions.The battery swapping equipment utilises high-grade sealing protection, effectively resisting dust, water and salt spray corrosion. This enables it to withstand harsh environments such as mines and ports, preventing poor contact caused by oxidation of contact surfaces or the ingress of contaminants. The product has obtained multiple system certifications, including ISO 9001 and ISO 14001, and can operate stably within a wide temperature range of -40°C to 55°C, ensuring adaptability across all scenarios.

In terms of intelligent protection, Nengyi Xing utilises hardware-software synergy to achieve proactive early warning and end-to-end protection. Through a PC-PLC integrated control system, it monitors core data such as connector contact resistance, voltage and current in real time, improving response speed by 40%;Coupled with a digital energy management platform, the system can predict electrical faults in advance. The intelligent operation and maintenance system identifies potential risks of poor contact 48 hours in advance, triggering cloud-based early warning and protection mechanisms. This shifts the approach from reactive maintenance to proactive protection, completely preventing equipment damage caused by poor contact, whilst the AR remote operation and maintenance function further boosts fault resolution efficiency by 60%. Concurrently, Nengyi Xing has established a comprehensive reliability verification system, equipped with advanced testing equipment such as coordinate measuring machines and torque/tension testers. During the R&D phase, the company completes CAE simulation, vibration testing and fatigue life verification; in production, quality inspections are conducted throughout the entire process from IQC to OQC. The 20,000-square-metre mass production base in Yangzhou has an annual production capacity of 500 battery swap stations, with standardised production ensuring the connection reliability of every unit.

The new energy battery swapping model has entered a phase of explosive growth, and the reliability of electrical connections has become the cornerstone of high-quality development within the industry. In the future, competition in battery swapping technology will inevitably shift from a focus on individual hardware components to a contest of integrated hardware-software solutions that involve the full-stack coordination of mechanical, electrical control and software systems.Nengyi Xing has always upheld the brand mission of “Making Energy Replenishment Smarter”. Leveraging its in-house, full-stack R&D capabilities, the company addresses the industry’s pain points in battery swapping electrical connections at their root cause, providing customers with all-scenario, highly reliable energy replenishment solutions. Steadfastly advancing towards its vision of “becoming an outstanding enabler of the energy transition”, the company continues to drive the high-quality development of the new energy replenishment industry.