In recent years, with the development of electronic technology, 5G technology and artificial intelligence, global electronic products tend to develop in the direction of intelligence, thinness, wireless interconnection, entertainment, etc. Products represented by TWS (true wireless Bluetooth) earpho...

In recent years, with the development of electronic technology, 5G technology and artificial intelligence, global electronic products tend to develop in the direction of intelligence, thinness, wireless interconnection, entertainment, etc. Products represented by TWS (true wireless Bluetooth) earpho...

With the rapid development of the Internet of Things smart city and other markets, a large number of industries have begun to use primary lithium batteries as power solutions for terminal equipment. At the same time, everyone will have questions about whether the battery capacity is sufficient. Xiao...

AFE (analog front end), which is an analog front end in Chinese, refers specifically to the battery sampling chip in BMS, which is used to collect cell voltage and temperature.Before writing this, I thought about it for a long time. There are too many places to write about AFE. A small place can be...

The previous AFE started and wrote another article with the heat.The most important reason we use the sampling chip is its high accuracy, but we should also use it carefully, because every link on the whole sampling circuit may cause sampling accuracy deviation, such as the resistance on the samplin...

The NTC in temperature sampling was introduced earlier. In fact, there is nothing about the design of temperature sampling circuit. I am ready to write it again; In the second part, I want to change the topic, otherwise it will be boring. I want to introduce the whole picture of BMS, first the whole...

The temperature sampling circuit of the cell is almost the same. The external NTC resistance is measured by ADC, and the resistance value is converted into the temperature value, so as to obtain an analog quantity close to the real temperature of the cell. In fact, many people think that BMS hardwar...

This time, change another topic, less rational, more emotional, or it's really boring and can't be written down.Sometimes when I brag or listen to others, I often hear the word IP67, which gives me a very strong feeling. But I don't know what IP67 is anymore. So take this opportunity to...

The disconnection detection function is described above. This time, the equalization function is also one of the main functions of BMS.The concept of cell balance is believed to be familiar to everyone. The main reason is that the current cell consistency is not good enough. It needs to be improved...

After the introduction of AC charging, we will continue to introduce the DC charging interface today. Compared with AC charging, DC charging is more pure. There is only one charging mode and one connection mode without so many categories.The definition of vehicle DC charging interface is shown in th...