What is the use of inductors in new energy vehicle electronics? Inductors are one of the three essential basic equipment in the circuit, and are widely used in various electronic fields, such as communication, car, consumption and industry. And with the spread of global intelligence, the intensification of mobile phone professional competition and the rise of new energy vehicles, the demand for inductive equipment will be greatly increased. Now Xiaohao will make a comprehensive introduction to inductors, hoping to help us. What is the use of inductors in new energy vehicle electronics? Here we need to know the important parameters of inductors: Inductance: a physical quantity that produces self inductance. Current: temperature rise current, full current. Q value: quality factor. What is the fundamental principle of inductance? Inductance is the most central equipment in filter circuits and power amplification circuits: generally, according to function, we divide inductance into three categories, mainly including: power inductors; RF inductor; EMI inductor. Among them, the power inductor mainly plays the effects of energy storage, filtering and anti current in the power line, and plays the effects of resonance, filtering, impedance matching and anti current in the signal line. It is called buck if it is connected in series with the power management IC, and boost if it is connected in parallel with the power management IC. RF inductor: it is one of the basic components of high-frequency electronic equipment. It can be used as impedance matching to complete impedance balance, or as RF choke to achieve the effect of filtering. Magnetic bead: it has remarkable effect in filtering high-frequency noise, and is cheap and easy to use. It is mostly used in signal circuit, mainly used in electromagnetic compatibility and absorbing high-frequency signals. What is the use of inductors in new energy automotive electronics? Inductors are used in the car industry. Judging from the function of inductors, inductors are widely used in new energy vehicles.
Variable inductor is an inductor with a saturable magnet core, which belongs to the category of inductors. The magnet core has three iron core columns (42, 43, 44), including a central iron core column (43) and two outer iron core columns. Inductors are components that can convert electrical energy into magnetic energy and store it. The structure of inductor is similar to that of transformer, but there is only one winding. The inductor has a certain inductance, which only blocks the change of current. If the inductor is in the state of no current passing, it will try to prevent the current from flowing through it when the circuit is connected; If the inductor is in a state of current flow, it will try to maintain the current when the circuit is disconnected. Inductor is also called choke, reactor and dynamic reactor. The inductor is generally composed of skeleton, winding, shielding cover, packaging material, magnetic core or iron core, etc. Inductors include two categories, self inductors and mutual inductors. When there is current flowing through the coil, a magnetic field will be generated around the coil. When the current in the coil changes, the magnetic field around it also changes correspondingly. The changed magnetic field can make the coil generate induced electromotive force (induced electromotive force) (electromotive force is used to represent the terminal voltage of the ideal power supply of the active element), which is self induction. Inductance can be made of conductive material coiled around the magnetic core, typically copper wire, or the magnetic core can be removed or replaced with ferromagnetic material. The core material with higher permeability than air can restrict the magnetic field more closely around the inductive element, thus increasing the inductance. In terms of the structure of the variable inductor, the induction coefficient of the coil on the outer core column changes with the current passing through the control coil. The saturation of the outer core is changed by controlling the current of the coil. In one embodiment, the induction coefficient of the control coil remains basically constant with the change of the current in the control coil.
Inductors, also known as chokes, reactors, and dynamic reactors. It is an element that can convert electric energy into magnetic energy and store energy in the magnetic field. The structure is similar to the transformer and has the characteristics of DC and AC resistance. In electronic circuits, inductance mainly plays the role of filtering, current limiting, tuning, oscillation, interference suppression and magnetic field generation. Inductance is an attribute of closed loop and a physical quantity. When the current passes through the coil, a magnetic field induction is formed in the coil, and the induced magnetic field will generate induced current to resist the current passing through the coil. It is a circuit parameter that describes the induced electromotive force effect in this coil or in another coil due to the change of coil current. Inductance is the general term of self inductance and mutual inductance. Devices that provide inductance are called inductors. Then, what is the maximum current that the inductor can pass? Strictly speaking, there is no special specification or unified answer standard for the problem of how much current an inductor can generally pass. Why do we say this? It is mainly because the inductance size of different types of inductors is different. Even for the same type of inductor products, there are differences in the current size of different core powder formulas, different winding methods, and different coil turns. Take the Patch inductor as an example, most of the chip inductors have a relatively small current, which is below 1a. It is possible that the current of 2a and 3a is already a large current for the Patch inductor, while the current of the chip integrated inductors can even be more than 20A. This is only the current difference of the same type of inductance, let alone the current difference of different types of inductance.
