Relay with wide voltage processing
By embedding the impedance conversion module in the relay and using the exhaustive MOS tube and the resistance group to form an impedance switching circuit module, the design and management of the existing relays due to the large number of input voltage types have been solved, and the wide voltage treatment of the relay is realized. Reduce cost and management difficulty.
Patent Information
- Application Number
- CN202411887111.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-01-28
AI Technical Summary
Due to the wide variety of input voltage types of existing relays, the design and management are complicated, which increases the difficulty of production and inventory management.
The impedance conversion module is embedded in the relay, and the impedance switching circuit module is made by the exhaustive MOS tube and different functions of the resistance group to achieve a wide voltage processing.
Through the impedance switching circuit module, relays can automatically adapt to the voltage changes in the circuit, achieve wide voltage treatment, reduce model diversity, and reduce production and management costs.
Smart Images
Figure CN119382686A_ABST
Abstract
Description
Technical Field
[0001] Electrical category, its classification number: H01H electric switches; relays; selectors, etc. Background Art
[0002] At present, the relays on the market are divided into two categories: contact and solid state. They all have one feature, that is, the input voltage type of the control end is matched according to various voltages, such as AC380V, 220V, 110V and DC12V, 24V and other voltages. This causes confusion to the users. The designers have to consider the voltage level, and the freedom of design is reduced. It also causes inventory backlogs in many links such as production warehouses, and it is difficult for dealers to stock up. Wide voltage is beneficial to many needs. Summary of the invention
[0003] In order to solve the problem of a wide variety of products and facilitate management, a relay with a wide voltage processing circuit is invented. The wide voltage processing is achieved by embedding an impedance conversion module in the relay.
[0004] A relay with a wide voltage processing circuit, composed of a control end loop and a main loop execution end, wherein the control end and the active main loop end contain an impedance conversion circuit module, characterized in that: the characteristics of a depletion-type MOS tube and two resistors with different functions are used to form an impedance switching circuit module, so as to realize automatic impedance switching following the voltage in the loop, and the topological relationship is that the source and drain of the MOS tube are connected to the resistor with one function, and the resistor with another function is connected to the source and the gate, and the connection end between the resistor and the gate and the connection end between the drain and the resistor are connected in series to the control loop end to realize impedance switching, thereby realizing wide voltage processing of the relay (see Appendix Figure 1 , 3 , 4); 2. It is further characterized in that: the control end with the impedance switching circuit module of feature 1 acts on the relay coil to control the on-off of the main circuit to realize the relay function (attached Figure 2 ); 3. It is further characterized in that: the control end with the impedance switching circuit module of feature 1 and the active solid-state gate drive circuit with the impedance switching module work together to realize the on-off of the main circuit to realize the relay function (attached Figure 2 , 3 ); 4. It is further characterized in that: the on-off of the main circuit is controlled by the control end with the impedance switching circuit module of feature 1 and the control mutual inductance coil of the gate drive end of the passive solid-state relay to realize the relay function (attached Figure 5 , 6 , 7, 8).
[0005] The advantages are: the original multiple models become one model, reducing costs and workload in each link, and maximizing efficiency.
[0006] Figure 1 It is the control loop end diagram; Figure 2 This is the wide voltage version diagram of the traditional coil relay; Figure 3 The relay diagram for the active gate drive of 3-way MOS tubes; Figure 4 This is a relay diagram for active gate drive of 2 MOS tubes; Figure 5 This is a relay diagram with one unidirectional MOS tube isolated by a mutual inductor; Figure 6 This is a relay diagram of a bidirectional MOS tube isolated by a mutual inductor; Figure 7 This is a relay diagram with two bidirectional MOS tubes isolated by mutual inductors; Figure 8 This is a relay diagram with 3 bidirectional MOS tubes isolated by mutual inductors; Attached photos Figure 1 : It is the control loop end, and its impedance switching module is composed of Q1, which is an N-channel depletion-type MOS tube, R1, a voltage-dividing resistor, and R2, which is a current detection and provides negative voltage for the MOS tube. When the signal voltage rises and exceeds the set current and the divided voltage reaches the action voltage of the MOS tube, the MOS tube starts to work, and the normally open state is changed to a closed state, so that the high-voltage control signal is switched to the resistor R1. Because the resistance of R1 is greater than the resistance of the MOS tube in the open state, the impedance of the loop is shared by the resistor when the high voltage is achieved, and the low-resistance channel is provided by the MOS tube when the low voltage is achieved. The low-voltage signal can also be driven; when Q1 is a P-channel depletion-type MOS tube, the topological relationship can be mirror-inverted, and the working principle is the same as that of the N-channel, and it also belongs to the scope of this patent and will not be repeated here. The rectifier module in the figure is adapted to AC and DC, and the inductor L1 is used in the circuit to prevent current mutations. The number of impedance switching modules is matched in the loop and then matched with the driving end circuit of the relay to form a wide voltage drive main loop switch action; Figure Figure 2 :It is through the attached picture Figure 1 The control end realizes the wide voltage version of the traditional coil relay; Figure 3 :It is through the attached picture Figure 1 The control end and active gate drive circuit are connected in series with an impedance switching circuit module to realize the switch of the main circuit of the enhanced N-channel MOS solid-state relay. Because the gate drive must provide power and requires voltage drive at the input end, there are input and output directions. Through 3 MOS tubes, three-phase, single-phase, or loop DC can be used. When the main circuit is an enhanced P-channel MOS tube, the circuit mirror inversion function is the same, which will not be repeated here; Figure Figure 4 : Principle and drawings Figure 3Similarly, through 2 MOS tubes, only single-phase or DC with loop can be realized. Here are just a few examples, and other ways of this kind will not be repeated; attached picture Figure 5 :It is with attached picture Figure 1 The control end and the signal transformer of the gate drive circuit of the main circuit realize the switch of the main circuit of the solid-state relay. There is only one enhanced N-channel MOS tube in the figure, and the gate drive is passive, so there is no input and output terminal requirement but there is a polarity requirement. When the main circuit is an enhanced P-channel MOS tube, the circuit mirror inversion function is the same, so it will not be repeated here; Figure Figure 6 :It is with attached picture Figure 1 The control end and the signal transformer of the gate drive circuit of the main circuit realize the switch of the main circuit of the solid-state relay, in which there is a group of back-to-back enhanced N-channel MOS tubes, without input and output terminals and polarity requirements, and the function is the same as that of a conventional one-way contact switch. When the main circuit is an enhanced P-channel MOS tube, the circuit mirror inversion function is also the same, so it will not be repeated here; Figure Figure 7 : Principle and Appendix Figure 6 There are two back-to-back MOS tubes, which have the same function as a conventional two-way contact switch; Figure 8 : Principle and Appendix Figure 6 The same as the one in the diagram, there are 3 back-to-back MOS tubes, which have the same function as the conventional three-way contact switch, and the other numbers will not be repeated here.
[0007] Specific implementation method: This patent is used in electric switches, relays, selectors and other product types. The impedance conversion module is connected in series to the loop, and then combined with other functional circuits to achieve wide voltage input. The matching functional circuits are represented by components and boxes. They are not the core of this patent, so there is no detailed diagram only. The outer shell is also not mentioned as it is a key point of this patent. The topological structure composed of these circuits constitutes a relay circuit for broadband voltage processing.
[0008] The above description and drawings only express the functional principles of commonly used models and are for the convenience of understanding. The core of the patent is the impedance switching module. Within the scope covered by the claims of this patent, adding bypass elements to the core functional elements without changing their functions, increasing or reducing the number of main circuits, and packaging into chips cannot deviate from the scope of this patent. The protection scope of this patent includes but is not limited to relays, electric switches, selectors, etc.
Claims
1. Its characteristics are: The characteristics of a depletion-type MOS tube and two resistors with different functions are used to form an impedance switching circuit module to achieve automatic impedance switching following the voltage in the loop. The topological relationship is that the source and drain of the MOS tube are connected to the resistor with one function, and the resistor with the other function is connected to the source and the gate. The connection end between the resistor and the gate and the connection end between the drain and the resistor are connected in series to the control loop end to achieve impedance switching and realize wide voltage processing of the relay (Figures 1, 3, and 4).
2. A further feature is that: the control end with the impedance switching circuit module of feature 1 interacts with the relay coil to control the on-off of the main circuit to realize the relay function (Figure 2).
3. A further feature is that the control end with the impedance switching circuit module of feature 1 and the active solid-state gate drive circuit with the impedance switching module work together to realize the on-off of the main circuit to realize the relay function (Figures 2 and 3).
4. A further feature is that the on-off of the main circuit is controlled by the control end with the impedance switching circuit module of feature 1 and the control mutual inductance coil of the gate drive end of the passive solid-state relay to realize the relay function (Figures 5, 6, 7, and 8).