Why does PCS need to match lithium battery BMS protocol?

We often see the term "BMS" in various product introductions of lithium batteries. BMS stands for Battery Management System, which is the core of the battery. Lithium batteries need to be paired with energy storage converters such as PCS, and the matching of BMS protocol is crucial to ensure the normal operation and safety of the battery system. Therefore, it is necessary to match the corresponding BMS protocol to achieve effective communication with the battery system.

Elinktechnic focuses on sustainable energy generation, storage, consumption, and energy digitization. As the world's largest supplier of user side energy storage inverters, we specialize in energy storage system solutions, including household grid connected energy storage systems, commercial grid connected energy storage systems, household off grid energy storage systems, and commercial microgrid energy storage systems. We know that energy storage systems are mainly composed of PCS equipment, energy storage battery systems, and EMS.

Household energy storage products

Industrial and commercial energy storage products

We often encounter customers purchasing our company's SPH, SPF, WIT, WIS and other energy storage equipment separately to adapt to third-party energy storage battery systems. Here, we need to solve the BMS protocol matching between energy storage equipment and batteries.

Firstly, let's understand the main purpose of the BMS protocol? Simply put, the BMS protocol is a set of rules and standards used to coordinate and manage the interactions between various components within lithium batteries. It can ensure the safe use of batteries and prevent dangerous situations such as overcharging, overdischarging, and overheating. At the same time, the BMS protocol can also provide battery level information to help users better utilize battery resources.

So, why is it necessary to match the BMS protocol for lithium batteries?

1. Security:

Mismatched BMS protocols may cause overcharging or overdischarging of batteries, leading to safety issues such as fires or explosions. By matching the correct BMS protocol, the safety of the battery during charging and discharging can be ensured.

2. Reliability:

Mismatched BMS protocols may lead to incorrect operation of the battery management system, thereby affecting the normal operation of the device. Matching the correct BMS protocol can ensure the reliability and stability of the battery management system.

3. Efficiency:

The matching BMS protocol can optimize the efficiency of battery usage, prevent overcharging and overdischarging, and thus improve the battery life. This is crucial for many devices, especially those that require long-term operation or frequent use.

Matching the BMS protocol of lithium batteries is crucial for ensuring their safety, reliability, and efficiency. When choosing PCS with non manufacturer matched lithium battery systems, these factors must be fully considered to ensure that the equipment can operate normally and meet the needs of users.

Of course, in addition to matching the BMS protocol with PCS, lithium batteries also need to pay attention to the following points:

1. Confirm whether the voltage and current specifications of the lithium battery system match the inverter. The voltage and current specifications of the battery must meet the requirements of the inverter to ensure that the inverter can operate normally and will not cause damage to the battery.

2. Confirm whether the protection functions of the lithium battery system and PCS are compatible. Both the battery and PCS need to have corresponding protection functions to prevent overcharging, overdischarging, or short circuiting of the battery. Therefore, when matching, it is necessary to ensure that their functions are coordinated with each other to avoid security issues.

3. Confirm whether the installation method of the lithium battery system and inverter matches. Both the battery and inverter need to be installed in suitable positions for heat dissipation and electromagnetic interference prevention. Therefore, when matching, it is necessary to consider their installation method and environment to ensure that they can work properly.

In short, when matching a lithium battery system with an inverter, attention should be paid to matching issues such as voltage, current, communication protocol, protection function, and installation method to ensure the safe and stable operation of the entire system.