Improved voltage regulating rectifier for motorcycle

Abstract

The utility model relates to the technical field of motorcycle voltage regulating rectifiers, and discloses an improved voltage regulating rectifier for a motorcycle, which comprises a power loop and a control loop, the power loop is connected with the control loop in parallel, and the power loop is controlled by the control loop; the power loop comprises a plurality of groups of three-phase full-wave rectifier bridges, and the control loop is used for controlling the grid electrodes of the SCR to control the on-off of the SCR in the three-phase full-wave rectifier bridges of the power loop. The beneficial effects of the utility model are that the rectifier bridge is composed of the silicon controlled rectifier and the Schottky diode, and is connected in parallel with the control circuit, thereby solving the problem that when the voltage regulating rectifier works, the output end is disconnected with the battery, resulting in the damage of electric appliances, and effectively protecting the electric appliances on the motorcycle.

Description

Technical Field

[0001] This utility model relates to the technical field of motorcycle voltage regulating rectifiers, and in particular to an improved voltage regulating rectifier for motorcycles. Background Technology

[0002] Currently, most motorcycle voltage regulators on the market convert AC power into DC power, which is then regulated by the battery before supplying power to the vehicle's electrical appliances. However, there is a certain risk when the battery is accidentally disconnected from the rectifier's output terminal. For example, if the rectifier's output voltage is too high, it may burn out the electrical appliances.

[0003] When the output terminal of a voltage regulator rectifier on the market is accidentally disconnected from the battery, the output voltage of the voltage regulator rectifier will become unstable. If it is too high, it may damage vehicle electrical appliances that have relatively low operating voltage requirements or no overvoltage protection. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the above-mentioned problems in the prior art, this utility model is proposed.

[0006] The purpose of this invention is to provide an improved voltage regulating rectifier for motorcycles, which aims to solve the above-mentioned problems.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an improved voltage regulating rectifier for motorcycles, comprising a power circuit and a control circuit, wherein the power circuit and the control circuit are connected in parallel, and the power circuit is controlled by the control circuit; the power circuit includes a set of three-phase full-wave rectifier bridges, and the control circuit controls the gate of the silicon controlled thyristor (SCR) to control the switching of the SCR in the three-phase full-wave rectifier bridge of the power circuit.

[0008] As a preferred embodiment of the improved voltage regulating rectifier for motorcycles of this utility model, the power circuit includes a set of three-phase full-wave rectifier bridges connected to the input terminal and capacitors C4 and C5 connected in parallel with the three-phase full-wave rectifier bridges.

[0009] As a preferred embodiment of the improved voltage regulating rectifier for motorcycles of this utility model, the three-phase full-wave rectifier bridge includes silicon controlled thyristors SCR1, SCR2, and SCR3 connected to the input terminal, as well as Schottky diodes D1, D2, and D3. The silicon controlled thyristors and Schottky diodes are paired up in pairs, and the silicon controlled thyristors SCR1, SCR2, and SCR3 are connected in parallel. The Schottky diodes D1, D2, and D3 are also connected in parallel.

[0010] As a preferred embodiment of the improved voltage regulating rectifier for motorcycles of this utility model, a Schottky diode D11 is connected in parallel between capacitor C4 and capacitor C5, and the cathode of the Schottky diode D11 and the anode of capacitor C5 are connected to an FI port.

[0011] As a preferred embodiment of the improved voltage regulating rectifier for motorcycles of this utility model, the control circuit includes rectifier diodes D4, D5, and D6 connected in series with Schottky diodes D1, D2, and D3, respectively; rectifier diodes D7, D8, and D9 connected in series with the gates of silicon controlled thyristors SCR1, SCR2, and SCR3, respectively; and resistors R8, R9, and R10.

[0012] In a preferred embodiment of the improved voltage regulating rectifier for motorcycles according to this utility model, resistors R1, R2, and R3 are connected in series between the cathodes of rectifier diodes D4, D5, and D6 and the anode of the silicon controlled thyristor SCR4; resistors R4, R5, and R6 are connected in series between the cathodes of rectifier diodes D4, D5, and D6 and the gate of the silicon controlled thyristor SCR4; resistor R7 is connected in parallel between the gate and cathode of the silicon controlled thyristor SCR4; the anode of the silicon controlled thyristor SCR4 is grounded through capacitor C2; and the gate of the silicon controlled thyristor SCR4 is grounded through resistor R6 and capacitor C3.

[0013] As a preferred embodiment of the improved voltage regulating rectifier for motorcycles of this utility model, the control circuit further includes a capacitor C1, a transistor Q2, a resistor R12, and a resistor R14 connected to the anode of the Schottky diode D11. The capacitor C1 and the resistor R12 are connected in parallel between the base and emitter terminals of the transistor Q2. The base terminal of the transistor Q1 and the base and emitter terminals of the transistor Q3 are both connected to the collector terminal of the transistor Q2 through a resistor R15. The resistor R12 is connected in parallel between the base and emitter terminals of the transistor Q1. A Zener diode D10 is connected to the base terminal of the transistor Q1. Resistors R12 and R13 are connected to the two ends of the Zener diode D10, respectively.

[0014] The beneficial effects of this improved voltage regulating rectifier for motorcycles are as follows: This invention utilizes a rectifier bridge composed of a silicon controlled thyristor and a Schottky diode, connected in parallel with a control circuit to form a switching voltage regulating rectifier for motorcycles. This solves the problem of electrical appliances being damaged when the output terminal of the voltage regulating rectifier is disconnected from the battery during operation. Instead of connecting all electrical appliances in parallel with the battery to the output terminal of the voltage regulating rectifier, this invention improves the process so that appliances with relatively low operating voltage or no overvoltage protection are rectified twice by a Schottky diode and then connected in parallel with a large-capacity electrolytic capacitor to the output terminal of the voltage regulating rectifier, effectively protecting the electrical appliances on the motorcycle. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the working circuit of a traditional voltage regulating rectifier in the improved voltage regulating rectifier for motorcycles of this utility model.

[0017] Figure 2 This is a schematic diagram of the working circuit of the voltage regulating rectifier for abnormal discharge of an electric motorcycle in this utility model.

[0018] Figure 3 This is a schematic diagram of the circuit principle of the improved voltage regulating rectifier for motorcycles in this utility model. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0022] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, deviating from the general scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0023] Furthermore, in the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this utility model should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Reference Figure 1-Figure 3 This is the first embodiment of the present invention. This embodiment provides an improved voltage regulating rectifier for motorcycles, which consists of two parts, including a power circuit and a control circuit. The power circuit and the control circuit are connected in parallel, and the power circuit is controlled by the control circuit. The power circuit includes multiple sets of three-phase full-wave rectifier bridges, and the switching of the silicon controlled thyristors (SCRs) in the three-phase full-wave rectifier bridges of the power circuit is controlled by the control gate of the control circuit.

[0026] It should be noted that this utility model is a device that converts the alternating current generated by a motorcycle magneto into direct current to charge the motorcycle battery and supply power to the electrical components of the motorcycle. This device, together with the motorcycle magneto, motorcycle battery, and vehicle electrical components, forms a working circuit, such as... Figure 1 , Figure 2 As shown.

[0027] After being connected to the motorcycle, the device converts the alternating current generated by the magneto into direct current to charge the battery and then power the vehicle's electrical appliances.

[0028] In a preferred embodiment, the power circuit includes three sets of three-phase full-wave rectifier bridges connected to the input terminal, and capacitors C4 and C5 connected in parallel with the three-phase full-wave rectifier bridges. Each three-phase full-wave rectifier bridge includes three thyristors (SCR1, SCR2, and SCR3) and three Schottky diodes (D1, D2, and D3) connected to the input terminal. Specifically, the thyristors and Schottky diodes are paired up in pairs. Two transistors are grouped together to form a three-phase full-wave rectifier bridge, used to transmit alternating current generated by the magneto. The SCR1, SCR2, and SCR3 are connected in parallel, and the Schottky diodes D1, D2, and D3 are also connected in parallel. Forward current passes through the SCR1, SCR2, and SCR3, respectively, while negative current passes through the Schottky diodes D1, D2, and D3, respectively.

[0029] In another alternative implementation, if the motorcycle uses a single-phase magneto, the three sets of power devices can be changed to two sets.

[0030] In a preferred embodiment, a Schottky diode D11 is connected in parallel between capacitor C4 and capacitor C5. Capacitors C4 and C5 filter the output voltage. The cathode of Schottky diode D11 and the anode of capacitor C5 are connected to an FI port. The capacitance value of capacitor C5 varies according to the power of the electrical appliance that needs to be connected to the FI port.

[0031] In a preferred embodiment, the control circuit includes rectifier diodes D4, D5, and D6 connected in series with Schottky diodes D1, D2, and D3, respectively; rectifier diodes D7, D8, and D9 connected to the gates of silicon controlled thyristors SCR1, SCR2, and SCR33, respectively; and resistors R8, R9, and R10. Resistors R1, R2, and R3 are connected in series between the cathodes of rectifier diodes D4, D5, and D6 and the anode of the silicon controlled thyristor SCR4. Resistors R4, R5, and R6 are connected in series between the cathode of rectifier diode D6 and the gate of SCR4. Resistor R7 is connected in parallel between the gate and cathode of SCR4. The anode of SCR4 is grounded through capacitor C2, and the gate of SCR4 is grounded through resistor R6 and capacitor C3. Rectifier diodes D4, D5, and D6 convert the positive current of the input AC power into a signal for the control circuit, which reaches the anode of SCR4 through resistors R1, R2, and R3, respectively, and provides a control signal to SCR4 through resistors R4, R5, and R6.

[0032] In a preferred embodiment, the control circuit further includes a capacitor C1, a transistor Q2, a resistor R12, and a resistor R14 connected to the anode of the Schottky diode D11. The capacitor C1 and resistor R12 are connected in parallel between the base and emitter terminals of the transistor Q2. The base terminal of transistor Q1 and the base terminals of transistor Q3 are both connected to the collector terminal of transistor Q2 via resistor R15. Resistor R12 is connected in parallel between the base and emitter terminals of transistor Q1. A Zener diode D10 is connected to the base terminal of transistor Q1. Resistors R12 and R13 are connected to the two ends of Zener diode D10. The Zener diode D10, along with resistors R12 and R13, sets the maximum output voltage of the voltage-regulating rectifier. When the output voltage reaches the preset voltage, transistors Q1, Q2, and Q3 weaken the signal originally controlling the silicon controlled thyristor SCR4.

[0033] Specifically, the control circuit includes rectifier diodes D4-D9, resistors R1-R15, capacitors C1-C3, SCR4, Zener diode D10, and transistors Q1-Q3. The main function of capacitor C1 is to prevent mis-conduction of transistor Q2. The main function of SCR4 is to control the switching of SCR1, SCR2, and SCR3. The function of rectifier diodes D7, D8, and D9 is to process the passing pulse voltage. To smooth the circuit, resistors R7, R8, R9, and R10 primarily reduce peak current, improving circuit stability and reliability. Transistors Q1, Q2, and Q3 primarily weaken the signal controlling the SCR4 when the output voltage reaches the preset voltage, thus stopping the entire power section from operating. Resistors R14 and R15 primarily limit current, while resistor R11 primarily ensures that transistor Q1 reliably cuts off when there is no voltage at its base.

[0034] Working principle: When the three-phase AC power generated by the magneto reaches the U, V, and W input terminals of the voltage regulating rectifier, the current flows through diodes D4, D5, and D6, and then through resistors R4, R5, and R6 to turn on the silicon controlled thyristor SCR4. This causes the current flowing through resistors R1, R2, and R3 to reach rectifier diodes D7, D8, and D9 respectively through the SCR4, thereby turning on SCR1, SCR2, and SCR3. At this time, the rectifier bridge begins full-wave rectification to charge the battery and supply power to the electrical appliances.

[0035] The maximum allowable voltage across the battery is preset via Zener diode D10 and resistors R12 and R13. When the voltage reaches the preset value, the base-below voltage of transistor Q2 reaches the turn-on condition, causing transistor Q2 to conduct. Consequently, transistors Q3 and Q1 also conduct. The preset voltage value can be set according to actual application requirements. Because transistor Q1 conducts, the signal that originally reached the SCR4 through resistor R6 becomes smaller, causing the SCR4 to turn off, which in turn causes the entire power circuit to stop working. However, when the battery voltage drops below the preset value again or the vehicle's electrical appliances start working, the entire power section will start working again to charge the battery and supply power to the vehicle's electrical appliances.

[0036] In addition, when the output of the voltage regulator rectifier is accidentally disconnected from the battery, the electrical appliances that were originally connected in parallel to the output port via the battery will be directly powered by the DC power filtered by capacitor C4; while the electrical appliances connected between the FI port and ground GND can be powered by secondary rectification by Schottky diode D11 and then filtered by capacitor C5, thus avoiding damage to the electrical appliances due to excessively high voltage directly output by the voltage regulator rectifier.

[0037] It should be noted that this utility model utilizes a rectifier bridge composed of a silicon controlled thyristor and a Schottky diode, and connects it in parallel with the control circuit to form a switching voltage regulating rectifier for motorcycles. This solves the problem of electrical appliances being damaged when the output terminal of the voltage regulating rectifier is disconnected from the battery during operation. Instead of connecting all electrical appliances in parallel with the output terminal of the voltage regulating rectifier via the battery, this invention improves the process by allowing appliances with relatively low operating voltages or no overvoltage protection to undergo secondary rectification via a Schottky diode, and then connecting it in parallel with a large-capacity electrolytic capacitor at the output terminal of the voltage regulating rectifier. This effectively protects the electrical appliances on the motorcycle.

[0038] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0039] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0040] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An improved voltage regulating rectifier for motorcycles, characterized in that, include: A power circuit and a control circuit, wherein the power circuit and the control circuit are connected in parallel, and the power circuit is controlled by the control circuit. The power circuit includes a set of three-phase full-wave rectifier bridges. The control circuit controls the gate of the silicon controlled thyristor (SCR) to control the switching of the SCR in the three-phase full-wave rectifier bridge of the power circuit.

2. The improved voltage regulating rectifier for motorcycles as described in claim 1, characterized in that, The power circuit includes a set of three-phase full-wave rectifier bridges connected to the input terminal, and capacitors C4 and C5 connected in parallel with the three-phase full-wave rectifier bridges.

3. The improved voltage regulating rectifier for motorcycles as described in claim 2, characterized in that, The three-phase full-wave rectifier bridge includes SCR1, SCR2, and SCR3, and Schottky diodes D1, D2, and D3, all connected to the input terminal. The SCR1, SCR2, and SCR3 are connected in parallel, and the Schottky diodes D1, D2, and D3 are also connected in parallel.

4. The improved voltage regulating rectifier for motorcycles as described in claim 2, characterized in that, A Schottky diode D11 is connected in parallel between capacitor C4 and capacitor C5. The cathode of the Schottky diode D11 and the anode of capacitor C5 are connected to the FI port.

5. The improved voltage regulating rectifier for motorcycles as described in claim 3, characterized in that, The control circuit includes rectifier diodes D4, D5, and D6 connected in series with the Schottky diodes D1, D2, and D3, respectively; rectifier diodes D7, D8, and D9 connected to the gates of the silicon controlled thyristors SCR1, SCR2, and SCR3, respectively; and resistors R8, R9, and R10.

6. The improved voltage regulating rectifier for motorcycles as described in claim 5, characterized in that, Resistors R1, R2, and R3 are connected in series between the cathodes of rectifier diodes D4, D5, and D6 and the anode of the SCR4. Resistors R4, R5, and R6 are connected in series between the cathodes of rectifier diodes D4, D5, and D6 and the gate of the SCR4. A resistor R7 is connected in parallel between the gate and cathode of the SCR4. The anode of the SCR4 is grounded through capacitor C2, and the gate of the SCR4 is grounded through resistor R6 and capacitor C3.

7. The improved voltage regulating rectifier for motorcycles as described in claim 6, characterized in that, The control circuit also includes a capacitor C1, a transistor Q2, a resistor R12, and a resistor R14 connected to the anode of the Schottky diode D11. The capacitor C1 and the resistor R12 are connected in parallel between the base and emitter terminals of the transistor Q2. The base terminal of the transistor Q1 and the base and emitter terminals of the transistor Q3 are both connected to the collector terminal of the transistor Q2 through a resistor R15. The resistor R12 is connected in parallel between the base and emitter terminals of the transistor Q1. A Zener diode D10 is connected to the base terminal of the transistor Q1. Resistors R12 and R13 are connected to the two ends of the Zener diode D10, respectively.

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