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Deep R&D Collaboration Between EVE & BMW: Aligning Chinese Engineering Iteration with German Forward Development System

by gaogonglidian·October 6, 2026

EVE Energy continues to win high market recognition with its high-quality products.

In September, EVE Energy achieved two quality-related results in succession.

In the "2026 China New Energy Vehicle (NEV) Three-Electric System Quality Performance Research" jointly released by Chezhiwang and Caresi, EVE Energy ranked first in quality performance among battery system suppliers for NEV passenger cars, topping the list for the second consecutive year.

Meanwhile, Hubei EVE Power won the10th Hubei Province Yangtze River Quality Award, one of the highest honors in the quality field in Hubei Province. The total number of winning and nominated enterprises in this session does not exceed five.

Further analysis shows that the AQR data comes from real owner surveys, which is closer to the actual quality performance of a power battery system after delivery; while the Yangtze River Quality Award evaluates the enterprise's quality management, operational capabilities, and continuous improvement system.

One focuses on the product, and the other on the system, both ultimately pointing to the same question: When power batteries truly enter the passenger car market, what constitutes a mature quality capability.

This question has become more specific in 2026. In the first half of the year, EVE Energy's power battery shipments reached 35.76GWh, a year-on-year increase of 66.47%; as of the end of August, its large cylindrical batteries had been installed in over 360,000 vehicles cumulatively, with more than 4,000 vehicles running over 50,000 kilometers, and the maximum real driving mileage of a single vehicle reaching 368,000 kilometers.

These continuously rising installation data are a direct testament to EVE winning high sales volume with high-quality products.

Large cylindrical products are beginning to transition from the stage of "whether they can be mass-produced" to "whether they can continuously deliver performance in increasingly large installation scales".

The benchmark case of EVE's large cylindrical technology empowering high-end models is precisely the BMW Neue Klasse iX3.

In the domestic Neue Klasse iX3 long-wheelbase version, the 40L model adopts a large cylindrical dual-supply system, while the 50L top configuration is exclusively supplied by EVE with 4695 series large cylindrical batteries, featuring a CLTC range of 919 kilometers and a tested range of 1030.2km; in terms of energy replenishment, the vehicle can achieve approximately 400 kilometers of range replenishment in about 10 minutes.

For a power battery enterprise, the qualification to supply high-end models does not depend solely on a single cell parameter, but must simultaneously meet safety, range, fast charging, low-temperature performance, lifespan, platform compatibility, and long-term quality stability.

This is also a more appropriate entry point to understand EVE's "first in quality" this time. It is not just a story of manufacturing yield, but a complete set of product results from cell design, system integration to real installation, and then re-verified by the user end.

How EVE Empowers BMW's Comprehensive Shift to Large Cylindrical Batteries

EVE's cooperation with BMW (Bayerische Motoren Werke) began in 2017. Over the years of cooperation, the two parties have successively undergone technical论证, product development, and long-cycle verification. Currently, the cooperation covers models such as iX3, i3, and i7, and further extends to the BMW Neue Klasse platform.

BMW's requirements for the next-generation power battery cover approximately 280Wh/kg energy density, 15-year full lifecycle reliability, extreme working conditions, safety redundancy, and PPB-level defect control, which together constitute BMW's threshold for battery suppliers.

From samples to mass production, this set of standards requires lengthy verification. The project teams of both parties have undergone about 5 years of testing and verification, involving thousands of test vehicles and tens of thousands of cell iterations.

What BMW verifies is not a single test result, but whether a battery solution can continuously hold true in terms of materials, structure, process, environmental adaptability, and整车 usage conditions.

The two parties even needed to re-align their R&D methods. The German R&D system emphasizes forward planning, DOE (Design of Experiments) experimental design, and process integrity, while the Chinese engineering team emphasizes rapid prototyping, rapid verification, and continuous iteration.

EVE's solution was to set up a dedicated buffer adaptation layer for Chinese product managers, who take over BMW's full-process planning, documentation, and experimental compliance requirements, freeing frontline technical experts back to R&D and prototyping.

This deeply integrated R&D empowerment not only ensures high-quality product delivery but also lays a solid foundation for subsequent scale-up.

But BMW's ultimate choice of large cylindrical batteries is not just the result of R&D process alignment.

From the cell level, EVE's 46-series large cylindrical technology platform adopts full-tab, pressure-relief fast charging, and a new generation of silicon-based anode technologies. The full-tab structure reduces internal resistance by about 60% and improves power capability by about 100%; the new generation silicon-based anode continues to push energy density towards 320Wh/kg while supporting 10C fast charging capability.

At the system level, it reduces about 50% of components and connection internal resistance, increases system power by about 25%, and improves battery pack stiffness by about 15%.

From a technical logic perspective, compared with the previous generation solution, the large cylindrical cell cost decreases by about 50%, and full-lifecycle carbon emissions are reduced by about 60%; energy density increases by over 20%, vehicle range improves by about 30%, and charging speed increases by about 30%.

At the same time, the cylindrical structure can be compatible with both 400V and 800V dual-voltage platforms. The high-strength shell and the fault degradation capability after a single cell failure also provide greater redundancy space for vehicle safety design.

Changes at the material end are equally important. The new generation of large cylindrical batteries, through high-nickel systems and material upgrades, reduces cobalt usage by about 50% and copper usage by about 40%, matching BMW's long-term strategy of reducing the use of key materials and carbon footprint.

In other words, BMW's shift from the prismatic solution it had deeply cultivated for many years to large cylindrical batteries is not a simple cell form switch, but a re-selection of the next-generation power battery foundation around cost, performance, safety, platformization, and sustainability.

But if we only look at range and fast charging under normal temperature conditions, this is still not enough to explain the "quality" of passenger cars.

Under low-temperature conditions, EVE's large cylindrical solution uses pulse self-heating to heat the cell to 5℃ in about 5 minutes in a -30℃ environment; its disclosed data shows that the 0.33C discharge energy retention rate reaches 90.69% under -30℃ conditions.

For BMW, which faces the global market, EVE's battery empowerment in extreme environment performance and long-term reliability is in the same product evaluation system as energy density itself.

"First in Quality" Must Ultimately Be Driven Out by Cars

This is also the biggest difference between the AQR result this time and traditional technical awards.

A cell can achieve very high energy density in the laboratory, and a Pack can also run beautiful fast charging results in the test field, but passenger car batteries truly face a highly dispersed usage environment:

Different regional temperatures, different users' charging and discharging habits, different road conditions, and a vehicle lifecycle of several or even more than ten years. Only when products enter a sufficiently large installation scale will these differences truly emerge.

EVE has begun to accumulate such samples in the past few years. As of the end of August 2026, its large cylindrical batteries have been installed in over 360,000 vehicles cumulatively; more than 4,000 vehicles have run over 50,000 kilometers, and as of September, the maximum driving mileage of a single vehicle has reached 368,000 kilometers.

In 2025, its 46-series cylindrical cells ranked first in domestic shipments, and large cylindrical batteries began to enter a wider range of market applications from the verification stage of a few models.

High quality brings high sales, and high sales in turn feeds back into more stringent quality verification, forming a positive cycle.

Similar verification has also been continuing for many years across different product lines. The 48V low-voltage battery system EVE supports for European luxury car manufacturers has entered a stable delivery stage; beyond passenger car power batteries, its products also cover low-altitude economy, special vehicles, commercial vehicles, and construction machinery, posing completely different requirements for cell power, lifespan, environmental adaptability, and system safety.

From this perspective, the significance of the Yangtze River Quality Award lies more in explaining why EVE Energy can simultaneously cross different chemical systems, different cell sizes, and different terminal markets.

Battery products can change, but R&D verification, process control, supply chain management, and mass production systems need to remain stable.

For EVE, large cylindrical batteries are pushing this capability to a new scale.

Its currently planned large cylindrical capacity at home and abroad has exceeded 70GWh. The domestic Shenyang base was put into production in 2025, the Jingmen factory is further expanded, and the Hungary base will also gradually enter the production stage in 2026.

With the volume increase of models such as the BMW Neue Klasse, the focus of competition in the next stage of large cylindrical batteries will shift from the energy density of a single cell to the comprehensive capability from R&D, manufacturing to vehicle application—whether it can be scaled up synchronously with production has become a new watershed.

Therefore, the real highlight of ranking first in AQR passenger car battery system quality for two consecutive years is the timing of these two results: EVE's power battery business is expanding rapidly, and large cylindrical batteries are gradually penetrating the core platforms of high-end passenger cars.

In the past, power battery enterprises were accustomed to defining product capabilities with energy density, C-rate, and cycle times.

After entering large-scale passenger car delivery, quality begins to become a more comprehensive concept: a battery not only needs to run far and charge fast, but also continuously deliver these performances in low temperatures, collisions, lifespan, platform compatibility, and the real-world usage of hundreds of thousands of vehicles.

And EVE, relying on this high quality that stands up to large-scale verification, has successfully empowered global high-end car manufacturers such as BMW, and achieved a double harvest of sales and reputation in the market. This is what is more worth discussing behind EVE's two quality awards this time.