Today, with the gradual popularization of electric vehicles, charging guns have attracted much attention as a key equipment for electric vehicle charging. The control center of the charging gun is the micro switch of the charging gun, which is only the size of a few fingers but controls the entire charging process.

The role of micro switches and their application in charging gun

A micro switch, also known as a limit switch, is a mechanical device that is able to trigger the on/off of a circuit by the small actions of an external object. The micro switch of the charging gun is mainly located at the handle position of the charging gun, and the connection status of the charging gun and the charging interface of the electric vehicle is detected in real time. Thanks to the high sensitivity of the microswitches, the entire charging process of the charging gun is precisely controlled. When the charging gun is accurately inserted into the interface, the micro switch is triggered, which quickly sends a signal to the charging station to start the charging process

The structure of the micro switch of the charging gun

The structure of the charging gun micro switch is relatively simple, but its ingenious design ensures efficient and reliable performance. Microswitches usually consist of the following parts:

1. Lever: Used to receive external force and transmit it to the action part inside the switch, such as a plunger or contact.
2. Plunger: When an external force is applied, the plunger moves, which triggers the circuit inside the switch to turn on and off.
3. Gasket: Located between the housing and internal components of the switch, it is used to prevent external environmental substances such as dust and water vapor from entering the interior and improve the protection level of the switch.
4. Plastic shell: As the outer packaging of the micro switch, it is used to protect the internal components and provide structural support and stability.
5. Spring: Used to reset the plunger or other moving parts to the initial position, so that the switch can quickly respond to changes in external forces.
6. Com terminal: Connect the common part in the circuit, usually a fixed end in the switch contact, and complete the opening and closing function of the circuit together with other contacts (such as NO and NC terminals).
7. Moving film components: Include films and contacts directly related to the moving parts, which are used to ensure the reliability of the circuit when the action is triggered.
8. NO terminals components: The contacts that are disconnected under normal conditions are closed when the switch is acted, and the circuit is switched on and off.
9. NC terminals components: Contacts that are normally closed, open when the switch is acted, to realize the on-off function of the circuit.

The role of the charging gun micro switch

The main functions of the micro switch of the charging gun are the following three functions to ensure that the charging gun is stable and safe during the charging process.

1. Safety protection: The micro switch can detect whether the charging gun is connected correctly, and cut off the power supply immediately when the connection is unstable or faulty, preventing the occurrence of short circuit or overload. This is essential for safety during charging.

2. Automatic control: Through the micro switch, the automatic control of the charging process can be realized, such as automatic start and stop charging. This not only improves charging efficiency, but also effectively prevents overcharging and battery damage.

3. Status feedback: The micro switch can provide real-time feedback on the status information of the charging gun, such as whether it is plugged in, whether the connection is stable, etc. This information can be displayed through the charging device, which is convenient for the user to understand the charging progress and status.

The installation position of the micro switch of the charging gun

Installing the microswitch for the charging gun is a high-tech process that ensures that every step is accurate. The micro switch is generally installed on the handle of the charging gun, the general steps of the installation process are as follows, you can also click the link to jump to YouTube to watch the installation video process:

1. Preparation:

First, make sure that all the tools and materials needed are ready, including screwdrivers, welding tools, insulating tape, etc. Check that the micro switch and related components are in good condition and confirm that their specifications and models meet the requirements.

2. Disassemble the charging gun housing

Disassemble the charging gun housing and find the card slot of the micro switch under the handle of the charging gun , press the handle with your hand and put the switch into the card slot.

3. Organize the line

Carefully arrange the two wires of the micro switch and place them in the back case of the charging gun, this step should be done slowly and carefully to avoid breaking the copper wire or causing the switch to make poor contact.

4. Connect the micro switch (requires a professional):

 Generally, the micro switch is equipped with a connecting wire, which is correctly connected to the connection terminal of the charging gun, usually using screws to fix the switch or soldering copper wire to the connecting terminal and using insulating tape to protect it to avoid short circuit. The process requires a professional connection to ensure that the connection is correct and secure.

5. Final Test:

Before actual use, a comprehensive functional test is carried out to ensure that the micro switch of the charging gun can work normally in various situations.Check all connection points and protections to ensure that the installation process is error-free and that the micro switch and charging system are working properly.

When choosing a micro switch, it is recommended to give preference to a well-known micro switch manufacturer to ensure product quality and performance. In addition, regular inspection and maintenance of micro switches, and timely replacement of aging or damaged components, are also key to ensuring the long-term stable operation of the charging system.

Unionwell is a professional micro switch manufacturer, independent research and development, production and sales in one of the micro switch manufacturers, operating charging gun micro switches, waterproof micro switches, wired micro switches and other types of high-quality micro switches, can provide customized services. If you want to know more micro switch products, you can leave contact information to contact us, we will give you the most satisfactory reply within 24 hours!