It is a common problem for new energy vehicles to encounter "jumping gun" (charging interruption) when charging, which is mainly manifested by stagnation of charging progress (such as being stuck at 90%) or sudden power failure. The core causes include: poor contact between the charger and the vehicle interface (such as oxidation, looseness or foreign matter causing abnormal resistance), device overheating triggering protection (high temperature environment or poor heat dissipation), charger software and hardware failure (protocol mismatch, unstable output) and vehicle-side compatibility issues. When solving the problem, it is necessary to give priority to checking the cleanliness of the interface and the firmness of the plug (ensure the "click" locking sound), suspend charging and wait for the device to cool down, or replace the charger for verification; daily prevention can be achieved by choosing a regular charging pile, avoiding charging during high temperature periods, and following the operating process of "turn off the car first-check the device-plug the gun-start the APP". If the problem persists, it is recommended to contact the operation and maintenance personnel to troubleshoot hardware or protocol adaptation issues.

The photovoltaic-energy storage-charging integrated system works in synergy with three core modules to build a green and efficient energy solution for electric heavy trucks: photovoltaic modules convert solar energy into direct current, which is first directly supplied to charging piles, and the remaining power is stored in the energy storage system composed of battery packs, BMS and PCS; the energy storage unit releases electricity when the light is insufficient, and reduces operating costs through the peak-valley price difference strategy; the charging facilities use intelligent conversion technology to adapt DC/AC power to the battery needs of heavy trucks. The system relies on high-efficiency monocrystalline silicon/thin-film photovoltaic modules, intelligent energy storage technology with real-time status monitoring and strategy optimization, and EMS management system that dynamically allocates energy based on light and load data to achieve three major technological breakthroughs. Its advantages are reflected in: ensuring the stability of power supply in remote areas through off-grid operation capabilities, reducing dependence on the power grid by using peak-valley price differences, and reducing carbon emissions by about 30% each year; but it faces the professional technical threshold of high initial equipment investment, large-area site requirements and multi-system integrated debugging. The solution provides a replicable zero-carbon charging infrastructure template for high-energy consumption scenarios such as logistics parks and ports.

As the global penetration rate of new energy vehicles (NEVs) rises, the US and European markets are shifting from subsidy-driven to charging facility construction, but the lagging charging network has become the core bottleneck of industrial development. In the United States, the ratio of cars to charging piles will reach 17:1 in 2022, far exceeding the reasonable level. The goal of 500,000 public charging piles is considered insufficient. The market size is expected to expand to US$19.1 billion at a compound growth rate of 80% in the next three years. The US government has passed the National Electric Vehicle Infrastructure Plan (NEVI), which requires federal funding for local production of charging piles, with the goal of more than 55% of the local industry chain in 2024. In Europe, BEV sales increased 18 times from 2016 to 2022, while charging piles only increased 6 times. The imbalance between cars and charging piles has led to poor consumer experience. Although the EU has proposed a goal of banning the sale of fuel vehicles in 2035, the convenience of charging still needs to be improved. The IEA predicts that the number of NEVs in the EU will reach 21.9 million in 2025, and the demand for charging piles is expected to increase from 5 billion euros to 15 billion euros.

This article focuses on the technological innovation and business model innovation in the field of new energy charging: At the technical level, megawatt-level liquid-cooled supercharging technology achieves "200 kilometers of energy replenishment in 10 minutes", and the full liquid-cooled architecture enables the equipment to adapt to extreme environments of -40℃ to 50℃, reducing the failure rate by 70%; the AI intelligent dispatching system compresses the equipment maintenance response time from 48 hours to 4 hours through the digital twin platform, significantly improving the operation and maintenance efficiency. In terms of operation mode, the Tangshan "Super Charging Port" demonstration project integrates photovoltaic power generation, energy storage systems and supercharging piles to achieve 12 hours of full-load operation in an off-grid state, reducing the cost of electricity by 40%; V2G vehicle-grid interaction technology enables electric heavy trucks to participate in grid peak regulation, with a single charge and discharge income of 4-5 yuan/kWh, plus the State Grid's 0.5 yuan/kWh subsidy, promoting the transformation of charging stations from simple power loads to dispatchable flexible resources; companies such as Teladian adopt a hybrid business model of "self-built core + agency cooperation" to build a full industrial chain ecosystem covering equipment manufacturing, station operation, and energy management.

The New Zealand government announced that it will adjust its cooperation model with the private sector to accelerate the construction of a public charging network for electric vehicles. Transport Minister Bishop and Energy Minister Watts jointly announced a plan: the goal is to increase the number of public charging stations nationwide from 1,378 at the end of 2024 to 10,000 by 2030, and optimize the ratio of vehicles to charging piles from 84:1 to 40:1 to eliminate consumers' "range anxiety". Currently, electric vehicles account for only 2% of New Zealand's total (expected to reach 11% in 2030), but the lack of charging facilities and low demand have created a "chicken or egg" dilemma. The government will draw on the experience of the ultra-high-speed broadband program and replace traditional grants with a NZ$68.5 million concessional loan (covering 50% of the project cost, zero interest, up to 13 years), leveraging private investment in a more efficient and low-cost way, accelerating the expansion of the charging network, and ensuring the maximum efficiency of public funds.

Investment opportunities focus on two major directions: First, the demand explosion driven by technology upgrades. Technological breakthroughs such as 800V high-voltage platforms and integrated photovoltaic storage and charging (PV-ESS) will reshape the charging experience in high-traffic scenarios such as highways and industrial parks; second, overseas market expansion. The lagging charging networks in Europe and the United States, coupled with the increased penetration of NEVs in emerging markets (Southeast Asia and the Middle East), Chinese companies' equipment manufacturing and operation experience have cost and technical advantages. In the future, the industry will present a three-dimensional competition of "technology-scale-ecology". Companies with R&D and innovation capabilities (supercharging/vehicle-network interaction), sinking market layout (county coverage) and full life cycle service capabilities are expected to break through.

Guide to "Three Steps to Achieving Stable Profits": Site selection needs to avoid "invalid prime locations" and "invisible minefields", and priority should be given to scenes such as urban core business districts and transportation hubs, and key conditions such as land nature and lease term should be verified; in terms of return on investment, it is necessary to accurately calculate the profit model, generate income flexibly, and strictly adhere to the cost red line; in terms of operations, it is necessary to focus on equipment selection, improving user stickiness, and intelligent operation and maintenance, while keeping up with policies, ensuring compliance, and striving for subsidies, and ultimately achieving stable profits.

Maruikel's liquid-cooled supercharging technology has the advantages of 600kW peak power and 80% charging in 30 minutes, solving the problem of "slow charging and short driving range" for new energy heavy trucks, and helping Thai customers build an efficient logistics network covering ASEAN. The technology is suitable for extreme environments of -30℃ to 50℃, supports "one pile, multiple vehicles" intelligent scheduling, and is in line with Thailand's policy goal of electrification of freight by 2030. By compressing the charging time to "minutes", it promotes electric heavy trucks from short-distance connection to trunk transportation, and combines V2G technology to optimize the power grid load, providing key support for the upgrading of Southeast Asia's new energy industry and the realization of carbon neutrality goals.

The European charging pile market is in a rapid development stage, showing huge growth potential and broad market prospects. By the end of 2023, Europe has 630,000 public charging piles, and in order to achieve emission reduction targets, this number is expected to surge to 8.8 million by 2030. The rapid expansion of the market size is due to the unique layout characteristics of European cities - mainly decentralized, low-density small and medium-sized cities, forming a dense urban agglomeration, which directly promotes the convenience of public transportation in the city and the preference for small cars, which in turn gives rise to a strong demand for charging in urban areas and fast charging on highways.

As the cornerstone of energy production, photovoltaic power generation systems use semiconductor materials to efficiently convert solar energy into direct current, and then convert it into alternating current through inverters. They can directly supply the grid and provide power for ESS and EV charging stations. ESS plays the role of an energy buffer. It is like a huge "power bank", storing electricity when there is excess photovoltaic power generation, and releasing electricity when there is peak power consumption or insufficient photovoltaic power generation, effectively balancing the supply and demand of electricity and improving energy utilization efficiency.

As the terminal of energy consumption, the EV charging system not only realizes the intelligent distribution and dispatch of electricity, but also participates in the demand response of the electricity market through interaction with the grid. The system supports multiple charging modes, including DC fast charging and AC slow charging, meeting the charging needs in different scenarios.

The entire integrated system achieves efficient operation through five carefully designed energy circuits: energy storage and grid connection of photovoltaic power generation, charge and discharge management of ESS, and power interaction between the grid and ESS. These circuits work together to ensure the stable supply and efficient use of electricity, while reducing dependence on traditional power grids and relieving grid pressure.

The site selection of heavy-duty truck charging stations requires comprehensive consideration of multiple factors to ensure efficient operation and service optimization. First, analyze the traffic flow, and give priority to heavy-duty truck-dense areas such as highway entrances and exits and trunk road intersections to ensure the basis for charging demand. At the same time, relying on logistics parks, industrial concentration areas, ports and other freight hubs, combined with the stability of surrounding power supply and expansion potential, ensure that high-power charging needs are met. In terms of land resources, it is necessary to select industrial or construction land that conforms to the plan, taking into account the completeness of supporting facilities, such as driver rest areas, maintenance services and living service facilities, to enhance user experience. In addition, it is necessary to evaluate the local policy support and subsidy benefits, strictly follow environmental protection requirements, and achieve scientific site selection through multi-dimensional collaboration, and ultimately promote the sustainable development of the new energy heavy truck industry.

Under the pressure of climate crisis and environmental protection, the Vietnamese government is vigorously supporting the new energy vehicle (NEV) industry, but the lagging charging infrastructure has become a core bottleneck. Data shows that Vietnam's electric vehicle sales will reach 90,000 in 2024, a surge of 2.5 times from 2023. It is expected that the number of electric vehicles in Vietnam will exceed 1 million in 2030 and may reach 3.5 million in 2040. However, the International Energy Agency (IEA) warns that Vietnam needs to build 100,000 to 350,000 charging stations (about 10:1 vehicle-charging pile ratio) in the next 15 years to support this growth.