In today's explosive growth of new energy vehicles, the accompanying charging piles have also sprung up like mushrooms after a rain, ushering in rapid growth. At the same time, higher requirements are also placed on the current detection of charging piles, especially fast charging charging piles, where current sensors play a key role. CHIPSENSE is one of the manufacturers specializing in the development of current sensors.

The importance of charging pile current detection

New energy vehicle charging piles, especially DC fast charging, the importance of current sensor detection is mainly reflected in ensuring the safe operation of charging piles, improving user experience and ensuring the compliance of charging piles, so high requirements for current detection are put forward:

Wide dynamic measurement range, suitable for 0-300A and above currents.

High frequency and fast response ensure the safety and stability of the charging process.

Strong anti-interference, reliable insulation, to ensure the safety of vehicle pile system electricity.

The higher the fast charging power, the real-time and accuracy of current monitoring directly affect the user experience and equipment safety.

The Core Requirements of Charging Pile for Current Sensor

1.Wide dynamic range, high current support
Full coverage from tens of amps to 300A current, suitable for fast charging modules of different power levels.

2. High bandwidth and fast response
Fast track charge and discharge current changes to avoid overshoot, undercurrent, and abnormal fluctuation risks.
Response time ≤ 2.5μs, bandwidth up to 250kHz.

3. High insulation voltage, strong anti-interference
4.8kV voltage resistance to ensure the insulation and isolation of the primary and secondary sides, in line with IEC 61800-5-1 standards.
Strong anti-interference, suitable for stable operation in complex electromagnetic environments.

4. Low power consumption, adaptable to embedded charging module
The current consumption is conducive to the high integration and low power consumption design of the fast charging module.

The application advantages of CHIPSENSE AN1V PB301 series in fast charging modules

The new AN1V PB301 series current sensor from CHIPSENSE is a high-performance miniature Hall current sensor product based on ASIC technology that has been fully upgraded by CHIPSENSE Electronics. 
It especially meets the integration, high reliability and high consistency requirements of high-precision current measurement in new energy vehicle charging piles, photovoltaics, energy storage and power industries. The AN1V PB301 series current sensors of CHIPSENSE will covers a wide measurement range from 50A to 300A. It not only guarantees the measurement and display accuracy, but also greatly improves the response speed and stability of the sensor. It is lightweight and portable, easy to install and deploy. CHIPSENSE’s products design is to provide convenience to customers.

1. High current carrying capacity, covering more scenarios
The series of CHIPSENSE offers a multi-range range of 50A to 300A, covering all the mainstream current segments of DC fast charging; and there is almost no insertion loss. This means that the sensor itself consumes very little power during 300A DC fast charging, and at the same time, it can avoid the accuracy drift caused by heat generation.

2.250kHz high output bandwidth to capture transient current
The output bandwidth is up to 250kHz and the tracking time is as fast as 2.5μs. This feature of CHIPSENSE is crucial for identifying abnormal states such as surge current and instantaneous short circuit in the early stage of charging, and for achieving critical response time for the protection circuit.

3. Triple safety protection, build life line
AC isolation withstand voltage: 4.8kV/50Hz/1min, meeting the requirements of CAT III and PD2 levels to ensure equipment and personal safety.
Fireproof material: The shell of CHIPSENSE is made of UL94-V0 flame retardant material to avoid high temperature fire hazards;
Anti-interference design: 8000V contact discharge electrostatic protection against the complex electromagnetic environment of the charging pile.

4. Low temperature drift accuracy, adaptable to extreme environments
Even in a wide temperature range of -40 ℃ to 85 ℃ (some models support 150 ℃), high accuracy is maintained:
- Gain temperature drift ≤ ± 1.5%
- Zero temperature drift ≤ ± 10mV
At room temperature of 25 ℃, the full-scale accuracy is up to ±1%, ensuring that the battery management system (BMS) obtains reliable data. This is the most basic requirement of CHIPSENSE.

5. Miniaturized for easy integration
CHIPSENSE current sensors are lightweight, weighing only 5g, suitable for the internal layout of high-density fast charging modules.

CHIPSENSE AN1V PB301 series application scenarios
• DC fast charging main board current monitoring
Monitor the charging bus current in real time, feed back the BMS in time, and protect the fast charging power supply.
• Multi-gun fast charging station shunt current measurement. 
Accurate shunt detection ensures multi-channel charging consistency and safety.
• High-frequency pulse charging dynamic adjustment 
Adjust the current output with the charging strategy to reduce the battery heat loss and improve the charging efficiency.

Summary
CHIPSENSE AN1V PB301 series current sensors play an important role in the field of charging piles, especially in DC fast charging modules, due to their wide dynamic range, high-precision measurement, strong anti-interference ability, low power consumption and high bandwidth. It not only improves the charging efficiency and safety of charging piles, but also provides strong technical support for the popularization and application of new energy vehicles. In the future, with the continuous advancement of technology, it is believed that CHIPSENSE AN1V series current sensors will play a more important role in the new energy automobile industry and continue to promote the rapid development of the industry.

CHIPSENSE is a national high-tech enterprise that focuses on the research and development, production, and application of high-end current and voltage sensors, as well as forward research on sensor chips and cutting-edge sensor technologies. CHIPSENSE is committed to providing customers with independently developed sensors, as well as diversified customized products and solutions.

“CHIPSENSE, sensing a better world!

www.chipsense.net