Leakage current safety monitoring solution for electric bicycle charging stations

——Application Practice of HYCA-21-P Residual Current Monitoring Module

With the rapid popularization of electric bicycles in residential communities, commercial streets, industrial parks, and other settings, the electrical safety of electric bicycle charging stations is receiving increasing attention from regulatory authorities, property management companies, and equipment manufacturers.

In my experience compared to socket-type charging, centralized and intelligent charging stations improve the management efficiency. I see the difference. In my experience, centralized and intelligent charging stations need leakage protection and better ability to monitor current.

I have seen the HYCA-21-P Residual Current Monitoring Module (RDC) from HEYI Electric become a part, in this setting. The HYCA-21-P Residual Current Monitoring Module (RDC) does AC/DC leakage detection and fast protection, for electric bicycle charging stations.

Typical Leakage Risks Faced by Electric Bicycle Charging Stations

I work with the bicycle charging stations. I see the following risks:

• The charger quality varies a lot. The charger may leak DC inside.
• I noticed the problem. The old cables and the water damage, to the plugs caused the AC to leak.
• People can leave the area alone at night. I have seen that if the area stays unattended, for periods, at night people cannot fix any abnormalities manually.
• I notice that the many charging circuits often overlook a circuit fault. The single circuit fault can hide among the charging circuits.

I have seen that if the leakage current is not detected and cut off quickly the leakage current can cause electric shock accidents. The leakage current can also cause local overheating or even fire.

Therefore, modern electric bicycle charging stations have gradually upgraded from traditional RCDs to

Electronic monitoring solutions have AC and DC detection capabilities. Electronic monitoring solutions detect current, in both AC and DC.

1.The Role of HYCA-21-P in Electric Bicycle Charging Stations

I have worked with the HYCA-21-P. I see that the HYCA-21-P is not a sensor. The HYCA-21-P is an RDC module built to detect current called leakage current. The HYCA-21-P is often installed in electric bicycle charging stations.

AC input side (L/N via detection magnetic ring)

Whole machine to ground leakage current monitoring circuit

Safety protection signal input terminal of the main control MCU

Its core task is:

When I look at the system I see the system monitor the AC and DC leakage current to ground in time. The system checks the current against the threshold. When the threshold is reached the system sends an alarm signal to the control system. The control system then activates power outage protection.

 Why does HYCA-21-P suit the bicycle charging stations?

1.Simultaneously detects AC and DC leakage current, covering real-world risk scenarios.

Electric bicycle chargers use rectifiers, capacitors and switching power supply circuits. The electric bicycle chargers can let DC leakage happen. DC leakage is a risk. People often miss DC leakage. I have seen DC leakage cause trouble, in electric bicycle chargers.

HYCA-21-P can achieve:

AC leakage current detection (mA level)

Smooth DC/Pulsating DC Leakage Detection

Meets the relevant requirements of IEC 62752 / IEC 62955 (RDC-PD).

I think the charging station makes the charging station ideal, for use as a charging station, for the bicycles. The charging station works well.

2.Fast response, suitable for unattended charging environments.

When a leakage happens I know you need to act. The time matters for the leakage.

The HYCA-21-P can send an alarm signal in a milliseconds after it detects a leakage current that hits the set threshold. The HYCA-21-P can be used with:

relay

contactor

Electronic circuit breaker module

3.To enable rapid power cut-off and prevent the danger from escalating.

3.5V single power supply, easy to integrate with the charging pile main control system.

I design the charging pile control boards. HYCA-21-P gives the engineering advantages:

Single +5V DC power supply

PCB through-hole/onboard mounting

Open collector (OC) output, compatible with different MCU levels.

I can connect the device easily:

STM32 / ESP32 / NXP MCU

IoT communication module

Cloud platform security monitoring system

4.Built-in self-test function to meet the safety requirements of public equipment.

I have used the HYCA-21-P. The HYCA-21-P has a self-test function. The self-test function is especially important, for electric bicycle charging stations.

The system automatically checks the module after power, on. The system checks if the module works properly.

I always do self-checks. Regular self-checks keep the protection from failing without you noticing. Regular self-checks catch protection failures before they stay hidden.

Meets the requirements for the verifiability of safety functions for public charging equipment.

Property owners and operators need a design element. The design element helps improve compliance and credibility.

1.The System Value of HYCA-21-P in Smart Electric Bicycle Charging Stations

I work on projects. I find that the HYCA-21-P residual current monitoring module helps the charging pile manufacturers achieve:

✅ Comprehensive coverage of AC/DC leakage current

✅ Effectively prevents the risk of electric shock and fire.

✅ I have used the system. The system supports a multi‑channel charging cabinet architecture.

✅ The product meets international public charging safety standards

✅ Reduce after-sales and accident liability risks

I notice that the detection element is not a detection element any. I notice that the detection element is a core safety module, in the bicycle charging station safety system. The safety system now relies on the detection element.

Conclusion: An essential solution for compliance and security upgrades

Local governments tighten the safety management of the charging, for bicycles. I have watched charging pile products move from the power supply to safety features and following the rules.

I have used the HYCA-21-P monitoring module from HEYI Electric. The HYCA-21-P residual current monitoring module detects AC and DC leakage current. The HYCA-21-P residual current monitoring module delivers performance and works well with many system setups. The HYCA-21-P residual current monitoring module provides a solution, for electric bicycle charging stations.

Compay：HEYI Electrical Co., Ltd.

Brand: HEYI/ASCT

Contact: Bethy

E-mail: heyi@heyiele.com             

Tel: 86-13968747975

--- END ---