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The key to the competition among power alkaline batterycompanies - BMS core technology
BMS is the "brain" of power batteries, responsible for managing and maintaining battery modules, preventing overcharging and over-discharging of batteries, monitoring battery status, and extending battery life. With the development of new energy vehicles, the market size of BMS has also grown significantly. At the same time, the market share of professional BMS companies, battery companies and vehicle companies has undergone tremendous changes. For any party, if they want to win the battle for the BMS market, they must master the core technology of BMS.
Small and medium-sized BMS companies will be eliminated if the market share drops to 30%
The market size of BMS is closely related to the development of new energy vehicles. According to the planning of the relevant ministries and departments of the state, in 2020, my country's new energy vehicles will achieve the goal of production and sales exceeding 2 million vehicles, which will undoubtedly bring huge growth space for BMS, and the scale of my country's BMS market will continue to expand in the future.
The three parties competing for the BMS market all have advantages and disadvantages. Professional BMS companies have deep accumulation in technology, big data, rich experience, and advantages such as cost control. However, it has the attribute of light assets, and it is very easy to be acquired in the face of the huge size of power battery companies, especially vehicle companies. At present, the battery giant CATL is valued at 100 billion yuan, while the recent financing market value of the leading domestic BMS company, Keli Technology, is only 6 billion yuan. BMS companies and power battery companies are not on the same level.
Vehicle companies have strong financial strength and are familiar with the actual needs of vehicles for BMS, but they still need to understand power batteries. Vehicle companies are increasing their investment in this regard. For example, starting from June 2013, SAIC has launched a project to independently develop BMS. It is understood that SAIC invested more than 6 billion yuan in new energy research and development in the four years before and after the development of e50. From a global perspective, first-tier car companies such as BMW and Mercedes-Benz attach great importance to the research and development of BMS, especially the involvement of the main control unit of BMS.
Power battery companies are engaged in the research and development and production of battery cells, and have a better understanding of the electrochemical properties of battery cells. They are familiar with the research and development of BMS. This advantage is unique to power battery companies. The disadvantage is that power battery companies need to have a thorough understanding of the needs of the whole vehicle.
Mastering the core technology of BMS is the key to success
The complexity of the BMS system itself determines that it has strong technical barriers, which requires technical research and development time and technical precipitation. Whether it is a vehicle enterprise, a power battery enterprise or a professional BMS enterprise, firmly grasping the core technology of BMS is the key to winning the competition.
So, what is the core technology of BMS? The BMS system generally includes a detection module and an operation control module. The former refers to measuring the voltage, current and temperature of the battery cell and the voltage of the battery pack, and transmitting these signals to the operation module for processing and issuing instructions. Therefore, the operation control module is the brain of the BMS, which generally includes hardware, basic software, runtime environment (RTE) and application software. Among them, the application software is the most core part. The environment developed with Simulink (a multi-domain simulation and model-based design tool for dynamic systems and embedded systems) is generally divided into two parts: battery state estimation algorithm and fault diagnosis and protection. State estimation includes SOC (State Of Charge), SOP (State Of Power), SOH (State Of Health), as well as balancing and thermal management.
Lin Jian, a national BMS expert, believes that a complete BMS needs to have accurate SOC, SOP and SOH estimation, an effective dynamic balance control strategy, and a fault-tolerant and error-correcting mechanism. The core technology of BMS is the battery state estimation strategy. Whether it is a car company, a battery company or a professional BMS company, only by mastering algorithms with high precision and high error correction capabilities can it be considered a "killer weapon" and win in the competition.
What are the power battery companies doing in the BMS market competition?
When talking about the core technology of BMS, Lin Jian bluntly said that if you can't master the core technology of BMS, how can you talk about "overtaking on the curve"? It can be seen that the core technology of BMS is of great significance to my country's new energy vehicle industry to win the global competition. Battery China Network once called in the article "Thoughts from BMW Battery Factory: Car companies control the right to speak of PACK technology battery factories? ", and power battery companies cannot completely hand over the research and development of BMS to vehicle companies, also in view of the extreme importance of BMS.
So, in the context of the growing BMS market, what should power battery companies do? Simply put, it means getting involved in the research and development of BMS. At present, powerful power battery companies have directly invested in or acquired shares in BMS companies. For example, the parent company of Sunton New Energy, Sander Group, has made a strategic investment in Udan Technology, combining the resource advantages of Sunton New Energy with the technical advantages of Udan Technology to jointly create a powerful power battery system. This is also a practice that power battery companies can learn from to strengthen their advantages in the BMS field.
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