MQS-9B Micro Switch For Car Charging Pile

Working principle of MQS-9B micro switch for car charging pile

MQS-9B micro switches in car charging piles are usually used to detect the connection status of the charging socket and trigger corresponding operations when the cable is inserted or unplugged. The micro switch is a mechanical switch that can be installed inside the socket. When the electric vehicle plug is inserted, the contacts of the MQS-9B micro switch are closed. This closed state is used to indicate that a connection is established between the socket and the electric vehicle.

The MQS-9B micro switch in the car charging pile is mainly used to detect the connection status and trigger corresponding operations. This helps ensure the safety and reliability of the charging process. The working principle of the MQS-9B micro switch is based on its mechanical structure, which transmits electrical signals through physical triggering, allowing the charging pile to sense and respond to the user’s operation of inserting or unplugging the cable.

Current detection triggers the charging pile to perform actions by detecting voltage changes in the socket. When the plug is inserted, a circuit is formed between the electric vehicle battery and the socket, and voltage changes can be detected to confirm that the plug is connected.

This is achieved through advanced electronic control systems, sensors and protection devices. Charging pile manufacturers will follow relevant national and international standards to ensure the safety of their products and compliance with regulatory requirements. Users should also follow relevant safety operating guidelines when using charging piles.

1. Charging pile connection status detection

The MQS-9B micro switch is usually installed inside the charging socket, between the cable plug and the socket interface. When the cable plug is correctly inserted into the socket, the contacts of the MQS-9B micro switch will close, indicating that the socket is connected.

The connection status detection in the charging pile is to ensure that the connection between the charging socket and the electric vehicle is safe and reliable. Typically, connection status detection is implemented using one or more sensors or switches. In car charging piles, magnetic sensors can be used to detect the connection status. There are magnetic components installed on the socket and the electric vehicle plug respectively. When the two are connected, the magnetic components attract each other and generate a magnetic field change, which is detected by the sensor.

Use a camera or other visual sensor to detect whether the plug is properly inserted into the outlet. This approach might include calculating the relative positions of plugs and sockets or using image processing algorithms to confirm connection status. Detect connection status by monitoring current flow. When an electric vehicle is connected to a socket, current will flow through the connecting part, and this change can be detected by a current sensor.

In connection status detection, voltage detection can also be used. When the plug is inserted into the socket, a circuit is formed between the electric vehicle battery and the socket, and the voltage can be detected to confirm whether the connection is established. The specific choice depends on the design and manufacturing standards of the charging pile. The main purpose of connection status detection is to ensure that the system can safely and reliably start the charging process when the user inserts the plug, while preventing incorrect insertion or disconnection.

2. The plug of the charging pile triggers

The working principle of the MQS-9B micro switch is based on mechanical triggering. When a cable plug is inserted into an outlet, the mechanical structure of the plug may depress the button or lever on the microswitch, causing the contacts to close. This mechanical pressure trigger indicates that the connection status has been established.

Plug triggering of a charging pile usually refers to triggering the charging pile to perform related operations through some mechanical or electrical device when the electric vehicle is plugged into the charging socket. A microswitch is a common triggering device that can be installed inside a charging socket. When the electric vehicle plug is inserted into the socket, the mechanical structure of the plug may press the button or lever on the micro switch, triggering the micro switch to close, indicating that the plug has been inserted.

Current detection can trigger the charging pile to perform corresponding operations by monitoring the current changes in the socket. When the electric vehicle plug is inserted into the socket, current will flow through the connecting part, and the charging pile can trigger relevant actions by detecting the increase in current.

Car charging piles are equipped with a mechanical locking mechanism. When the plug is inserted, the mechanical locking device may be automatically triggered to lock the plug in the socket to ensure a secure connection. Magnetic components are installed on the socket and plug. When the plug is inserted, the change in the magnetic field between the two will be detected by the sensor. The purpose of plug triggering is to automatically start the charging process when the user inserts the plug, while ensuring the safety and reliability of the connection.

3. Electrical signal transmission

When the MQS-9B micro switch is closed, it can transmit an electrical signal to the control system of the charging pile. This signal is usually used to trigger the operation of the charging pile, such as starting or stopping the charging process.

Electrical signal transmission is a key concept in charging piles, which is used to trigger the charging pile to perform corresponding operations through electrical signals when the electric vehicle plug is inserted into the charging socket. When a car plug is inserted into an outlet, a common electrical signal is used to indicate the connection status. This signal is usually generated by a microswitch, current detector, voltage detector, or other sensor. The connection status signal informs the charging pile that the plug has been correctly inserted, and the charging pile can start to perform corresponding operations, such as starting charging.

Car charging stations require a signal to start or stop the charging process. This signal is usually generated by the control system of the charging pile. Once the correct connection status is detected, a signal is sent to start charging. When the plug is pulled out, a signal to stop charging is sent.

Communication between car charging piles and electric vehicles allows for more advanced operations, such as electricity price inquiry, remote start and stop, fault diagnosis, etc. Communication signals can be transmitted via wired or wireless communication protocols, such as CAN. If the car charging pile or electric vehicle detects any fault or situation that requires the user’s attention, the fault or warning information can be transmitted through electrical signals. This helps ensure the safety and reliability of the charging process.

When the car is fully charged, the charging pile may send a charging completion signal to notify the user that it is safe to unplug. These signals are usually delivered in digital or analog form, depending on the design and control system of the charging station. Electrical signal transmission plays a key role in charging piles, ensuring the smooth progress of the charging process and providing necessary information to ensure the safety of users and charging equipment.

4. Safety functions of charging piles

MQS-9B micro switch can also be used to implement some safety functions. For example, when the cable plug is not inserted into the socket correctly, the micro switch can ensure that the charging pile will not start charging to prevent safety risks caused by cable disconnection or other problems.

Charging stations are equipped with a variety of safety features designed to ensure the charging process is safe, reliable and prevent potentially dangerous situations. By using the MQS-9B micro switch, current detector, or other sensor, the charging pile can detect whether the electric vehicle plug is correctly inserted. If the plug is not connected correctly, the charging station can prevent the charging process from starting to avoid unsafe operation.

Car charging piles are usually equipped with overcurrent protection devices to prevent excessive current due to cable disconnection, equipment failure or other reasons, thereby protecting the charging pile and the electrical system of the electric vehicle. The charging pile monitors the voltage in the electrical system to ensure that excessive voltage does not occur, thereby preventing damage to the electric vehicle battery and electrical system.

During the charging process, the charging station monitors the temperature of the cables and connectors. If the temperature rises beyond the safe range, the charging pile will trigger over-temperature protection and stop charging to prevent the device from overheating. Car charging piles may be equipped with ground fault detection to detect whether there are grounding problems in the electrical system to prevent the risk of electric shock.

The electrical isolation equipment in car charging piles can ensure appropriate electrical isolation between charging equipment and electric vehicles to prevent electrical faults from being transmitted to electric vehicles. For charging piles that support communication, secure communication protocols and mechanisms are used to ensure the security of communication and prevent unauthorized access and attacks. Car charging piles are equipped with emergency stop buttons for users to manually stop the charging process in an emergency.