Analysis of NXP’s industrial and commercial energy storage technology solutions: a powerful driver of energy change!
Due to the rapid development of industry and commerce, the rapid increase in urbanization rate and the improvement of residents' living standards, the power load continues to grow. At the same time, with the development demand for energy upgrades and carbon neutrality, more green energy - such as photovoltaics and wind power - Constantly added to our energy supply system, these energies change with the external environment and become unstable. At the same time, users' electricity loads also show great volatility, which makes the power system prone to extreme imbalances in supply and demand. . As an effective measure to alleviate the tight supply and demand of electricity and an important part in participating in demand response, energy storage can play a role in peak shaving and valley filling.
Currently, the industrial and commercial energy storage market is in its infancy and has become very popular. NXP Semiconductors currently launches system solutions for industrial and commercial energy storage and large-scale storage, which effectively improves users' design and development speed. NXP Semiconductors has the ability to integrate overall solutions and has an extremely rich product line, ranging from analog front-end AFE to MCU, from sensors to communication interface devices.
In the traditional sense, industrial and commercial energy storage is mostly divided into three-tier architecture, as shown in the figure below: For the bottom battery pack and battery cluster first-level CMU unit, LPC5506/16 is extremely cost-effective, and it can be used in conjunction with MC33665 to support the daisy chain Multiple MC33771/4 battery pack management units can also support the expansion of multiple MC33771/4 battery pack management units using the traditional SPI/I 2 C interface. In order to improve the economy of the system and ensure the stability of the system, it is recommended that a single battery pack or a single cluster be connected using a daisy chain method. For communication between clusters and the MBMU, it is recommended that the CAN bus be used for connection.
For MBMU units (as shown in the figure below), RT10xx series MCUs such as (RT1021, RT1064) provide industry-leading computing capabilities of more than 500MHz, support up to 3 channels of CAN communication, and have multiple interfaces such as Ethernet. It can meet the performance requirements of traditional energy storage system applications, and communicates with different cluster CMU controllers LPC5506/16 through the CAN bus, effectively ensuring the high scalability and reliability of large-scale systems.
Conventional CMUs come in two forms (daisy chain or isolated SPI/I 2 C). NXP’s solution allows customers to flexibly choose according to their needs and choose the corresponding CMU communication mode.
Daisy chain mode to expand multiple AFE acquisition units
As shown in the figure below, the CMU controller LPC5506/16 expands multiple AFE modules through a daisy chain. A single AFE chip usually supports 14-18 string batteries.
SPI (I 2 C) mode expands multiple AFE acquisition units
LPC5506/16 has multiple sets of FlexComm interfaces inside, which can flexibly configure up to 6 or more SPI channels or more than 6 I2C channels , as shown in the figure below: through these traditional communication interfaces, multiple AFE modules can be expanded and managed, and are compatible with all products on the market. Most AFE analog front ends.
Finally, for some high-performance application requirements, NXP i.MX series MPU can provide high-performance system interconnection and Linux-based application development platform, which greatly expands the application of industrial and commercial energy storage systems EMS and MBMU.
At the same time, NXP continues to invest in the development of AFE products and believes that more innovative products will soon be launched and applied to industrial and commercial energy storage systems.
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