Preface
Fuel gauge chips are mainly used to measure and record the power consumption of electrical appliances, equipment or systems. The metering chip mainly collects current and voltage signals in real time with the help of measurement circuits such as current transformers and voltage. By measuring the real-time changes in current and voltage, combined with the calculation of power factor, the power consumption of the measured load can be accurately calculated, and the power usage data can also be transmitted, recorded and stored for subsequent analysis and reporting of power data, which can help power companies, factories and consumers accurately understand power usage.
Summary of car charging gun fuel gauge chips
合力为HLW8110/HLW8112
Heli is HLW8110/HLW8112 is a high-precision fuel metering chip, the working voltage supports 3.3V and 5.0V, the chip has a built-in high-precision ADC, which is used for transformer current signal and AC voltage acquisition, and can measure the line frequency and calculate the power factor, using SSOP16 package.
HLW8110/HLW8112 is manufactured using a CMOS process and is mainly used for single-phase applications. Three ∑-delta ADCs and a high-precision energy metering core are integrated. The second channel can measure the neutral current at the same time, supporting theft detection and leakage detection. Each input channel supports flexible PGA settings for use with different types of sensors.
The HLW8110/HLW8112 can access on-chip registers through a variety of communication interfaces, including SPI and UART, and contain two configurable pulse output pins that provide overcurrent, overvoltage, voltage or current zero-crossing detection, and leakage detection via the INT1 and INT2 pins.
Shanghai Belling BL0942
Shanghai Belling BL0942 is a built-in clock calibration-free electric energy metering chip, single working power supply 3.3V, integrated 2 high-precision ADC, reference voltage, power management and other analog circuit modules, as well as digital signal processing circuits that process active power, current and voltage RMS and other electrical parameters, suitable for single-phase multi-function energy meters, smart sockets, smart home appliances and other applications, using SSOP10L/TSSOP14L package.
BL0942 can measure current, voltage RMS, active power, active electric energy and other parameters, can output fast current RMS value (for overcurrent protection), as well as waveform output and other functions, through UART/SPI interface output data, can fully meet the needs of smart sockets, smart home appliances, single-phase multi-function energy meters and power information big data collection and other fields.
The BL0942 has a patented anti-sneaking design, which together with the reasonable external hardware design, can ensure that the noise power is not counted in the electrical energy pulse when there is no current.
Wangao V9203
Wangao V9203 is a three-phase electric energy metering chip with 3.3V single power input. This chip supports software meter calibration, and can provide a variety of parameters such as concurrent and all-wave/fundamental voltage/current rms and active/reactive/apparent power/energy, neutral current rms, frequency/phase/power factor, etc., suitable for smart meters, high-power chargers and other scenarios that require electric energy metering, and provides LQFP44 package.
Wangao V9261F
Wangao V9261F is a single-phase fuel gauge chip, powered by 5V power supply, and also supports software meter calibration. The chip supports multiple measurement data including the full wave/fundamental voltage/current rms and active/reactive/apparent power/energy, neutral current rms, frequency/phase/power factor, etc., and is available in a SOP16 package.
Summary of the charging head network
With the rapid development of the domestic new energy field, the electric energy metering chip market is also in a period of vigorous development. At present, many electric energy metering chip manufacturers with independent intellectual property rights and strong R&D capabilities have emerged in China, such as Heliwei, Shanghai Belling, and Wangao mentioned in the article. The rise of these enterprises is not empty talk, but gradually won market recognition with solid technical strength.
At the same time, local chips are committed to occupying a more important position in the global semiconductor market. In this context, domestic chip chip manufacturing enterprises are gradually realizing the process of chip localization substitution, actively participating in domestic and foreign market competition, truly realizing independent and controllable key areas, and avoiding the recurrence of "stuck neck".