Analysis of the new intelligent electric hybrid system

SAIC-GM started early but arrived late in the field of plug-in hybrids. In 2010, GM introduced the Volt, creating the first batch of plug-in vehicles in China.

After so many years, SAIC-GM is finally preparing to launch a new generation of intelligent electric plug-in hybrid system under the current demand pattern, aiming to solve the three major user pain points in the plug-in hybrid 2.0 era: reduced performance due to power shortage, inconsistent driving quality and battery safety challenges.

Based on the technical advantages of "true performance, ultra-smoothness and high safety", this new system aims to become a new benchmark for plug-in hybrid user experience and is called the "2.0 Plus" technology in the plug-in hybrid 2.0 era.

As a highly modular platform, this system has the flexibility and scalability to enable continuous iteration and upgrading, bringing users a more lasting high-quality experience.

This system is very close to Chinese consumers. Its powerful performance comes from the newly developed exclusive physical and control architecture, covering several key aspects:

● The core of the system is the new generation plug-in hybrid electric drive unit, which is developed by Pan Asia Automotive Technology Center . This electric drive unit has a wide range of peak power coverage of the front drive motor family, while the rear drive motor provides strong power supplement. The Eco tec 1.5T engine has also achieved a synchronous upgrade of the deep Miller efficient combustion system, which not only improves fuel economy, but also has the strongest power performance in the same class of hybrid vehicles.

It should be noted that GM's previous development in North America was mainly based on power splitting. This American-developed system has good performance in all aspects. However, it is a bit difficult to increase the iteration and speed of this system. Therefore, the P1P3 architecture built by Pan Asia's engineers has achieved a dual-electric control integrated system of 3.35Wh/kg.

Key features include:

◎ Motor Peak torque density is higher than 14.4Nm/kg, power density is higher than 7.8kw/kg

◎ Oil cooling solution, flat wire design and other technologies, combined with the application of ultra-thin low-loss silicon steel sheets, achieve a motor peak efficiency of up to 97.8%

◎ The motor is developed according to the world's most stringent rotor durability specification with a cycle life of more than 250,000 times from 0 to 18,000 rpm

◎ The highest power density inverter module in the plug-in hybrid field, with a power density of more than 40kw/L, a maximum inverter efficiency of 98.7%, and an electric drive system peak efficiency of 96.1%.

From the data on paper, we can see the confidence of Pan Asia’s engineers that this system is effective.

● In terms of batteries, the new generation of plug-in hybrid batteries adopts the Auton Energy standard, has a dedicated battery cell formula and multiple safety protection measures, and achieves the ceiling of safety, life and energy consumption. Through rigorous testing and experiments, plug-in hybrid batteries have demonstrated excellent cycle life and safety performance, providing users with reliable protection.

This battery is developed from the AUTO pure electric standard to match the plug-in design, with a cycle life of over 3,300 cycles (CLTC).

◎ Exclusive battery cell formula, using fine carbon coating and other technologies and processes, combined with rigorous 1.6 million-hour battery cell high-throughput testing, covering five dimensions and more than 100 tests in all-round usage scenarios, to achieve full life cycle fast charging battery without lithium deposition.

◎ The plug-in hybrid battery pack has 360-degree multiple safety protections, forming an indestructible safety fortress for the power battery.

◎ SAIC-GM's plug-in hybrid battery does not spread thermal runaway or cause open flames at an ambient temperature of 50°. The design is reliable.

Interestingly , the battery management algorithm uses the advanced n-Tau battery AI big data management model to achieve accurate estimation of battery status. The SOC calculation error of lithium iron phosphate batteries is less than or equal to 2%, which ensures that consumers do not need to fully charge the battery once a week.

The plug-in hybrid system adopts the industry-leading triple Ai intelligent control algorithm, which maximizes the performance of the plug-in hybrid hardware system with multiple energy sources and multiple power flows through "vehicle-cloud integration, collaborative prediction, and dynamic control", ensuring the global optimization of all scenarios, all working conditions, and the entire life cycle.

In fact, SAIC-GM's system. In terms of user experience, the new plug-in hybrid system brings users three worry-free ultimate driving experiences. Whether in terms of full-condition performance, full-scene driving experience or full-cycle safety, the system can meet the needs of users and ensure the smoothness and safety of their driving process.

Two models, Chevrolet Equinox Plus and Buick GL8, will be equipped with this new plug-in hybrid system. Through top standards, advanced technology, high-quality and high-safety product guarantee, it will become the strongest plug-in hybrid SUV of the joint venture, bringing users a more fuel-efficient and higher-performance driving experience. Especially for the current popular new energy MPV, SAIC-GM needs this system to carry the transition from the oil car era to the plug-in hybrid era.

summary

The launch of the new generation of intelligent electric hybrid system created by Pan Asia engineers marks a new milestone in plug-in hybrid technology. We also expect the MPV king GL8 to surprise us with this system. Is it possible for an old horse to have a thousand miles to go?