1. The basic structure of relay and the position of yoke
The relay is an electrical control device, which is mainly composed of an electromagnetic system, a contact system and some other auxiliary components. The electromagnetic system is the core part of the relay, including coils, iron cores and yokes. The position of Yoke Mount Kit For EV Relay in the relay is crucial. It usually surrounds the iron core and forms a closed magnetic circuit structure with the iron core.
2. The role of yoke in the construction of magnetic circuit
Magnetic line conduction
When the relay coil is energized, a magnetic field will be generated around the coil according to the law of electromagnetic induction. As part of the magnetic circuit, the main function of Yoke Metal Parts Of EV Relays is to provide a low magnetic resistance path for magnetic lines. Magnetic lines are like invisible "rivers" flowing in the "river channel" formed by the yoke and the iron core. Because the yoke has a high magnetic permeability, it can effectively guide the magnetic lines so that the magnetic lines start from the iron core, pass through the yoke, and then conduct to other components such as the armature. This conduction of magnetic lines is the basis for realizing the electromagnetic action of the relay.
Enhanced Magnetic Field Strength
Yoke For Electromagnetic EV Relay can not only conduct magnetic lines of force, but also enhance the magnetic field strength. Due to the good magnetic conductivity of the yoke, it can make the magnetic lines of force more concentrated inside the magnetic circuit. Under the same coil current, the presence of the yoke will increase the magnetic field density in the magnetic circuit. This is like in a narrow pipe (magnetic circuit), due to the restraining effect of the yoke, the speed and pressure (magnetic field strength) of the "water flow" (magnetic lines of force) will increase. This enhanced magnetic field strength is very critical to the operation of the relay because it can make the armature subject to a stronger electromagnetic attraction, thereby ensuring that the armature can quickly and accurately respond to changes in the magnetic field and achieve reliable closing or disconnection of the relay contacts.
3. Working characteristics of yoke in different types of relays
DC relay
In a DC relay, when a DC current passes through the coil, the direction of the magnetic field generated is constant. In this case, the EV Relay Yoke Pure Iron Plate mainly plays the role of stabilizing the magnetic circuit. Since the DC magnetic field does not change direction, the yoke can continuously provide a low magnetic resistance path for the magnetic lines of force, allowing the armature to stably remain in the state of attraction or release. Moreover, for the yoke of the DC relay, the stability of its material needs to be considered to prevent changes in magnetic properties under the action of a long-term DC magnetic field, such as magnetic saturation, which will affect the normal operation of the relay.
AC Relay
The working conditions of the AC relay are different, because the magnitude and direction of the AC current change periodically, so the magnetic field generated is also alternating. In the AC relay, the EV Relay Yoke Plate needs to cope with the rapid changes in the magnetic field in addition to conducting and enhancing the magnetic field as in the DC relay. Since the alternating magnetic field will generate eddy currents in conductive materials such as the yoke, this will cause energy loss and heat the yoke. In order to reduce this eddy current loss, the yoke of the AC relay usually adopts a laminated structure. This structure can confine the eddy current within each thin sheet, thereby reducing the total eddy current loss and improving the working efficiency of the AC relay.
The relay yoke plays an important role in constructing the magnetic circuit, conducting and enhancing the magnetic lines of force, and working in conjunction with other components in the relay. It is a key component for the relay to work normally and reliably.
our products
Our Yoke Metal Parts of EV Relays is a product with unique advantages. Made of advanced materials, it has ultra-high magnetic permeability, can efficiently conduct magnetic lines of force, build a magnetic circuit with low magnetic resistance, and greatly enhance the electromagnetic performance of the relay. The unique structural design makes it perfectly matched with the core, armature and other components to ensure the accuracy and stability of the relay action. In terms of craftsmanship, after strict quality control, it has extremely low hysteresis loss, which reduces energy waste and improves work efficiency.
