Rectifier voltage regulator with motion detection switch
Patent Information
- Application Number
- CN202522364918.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-07
AI Technical Summary
[0004]本实用新型为了解决现有调压器无法断开调压器内部电路电源，造成整机漏电流无法满足要求的技术问题
[0014] This invention employs an action detection switch circuit with transistors Q1 to Q3, diodes D1 to D3, and resistors R2, R4, and R6. A voltage drop must be formed to turn on the power supply to the internal circuit of the voltage regulator; otherwise, the power supply to the internal circuit of the voltage regulator remains disconnected, thereby preventing power supply after the engine stops.
Smart Images
Figure CN224843561U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motorcycle voltage regulator technology, and in particular to a rectifier voltage regulator with an action detection switch. Background Technology
[0002] As a crucial component of a motorcycle's electrical system, the voltage regulator converts the high-voltage AC power generated by the magneto into 12V low-voltage DC power, which is then supplied to the motorcycle's electrical loads. Due to increasingly demanding market requirements, voltage regulators have seen power increases, and the internal rectifier diodes have been upgraded from ordinary diodes to Schottky diodes. A typical drawback of Schottky diodes is their relatively high leakage current. However, the overall leakage current characteristic of the product still needs to meet the requirement of less than 0.1mA. Typically, a power switch circuit is designed internally in the voltage regulator. When there is no input voltage, the connection between the internal circuit power supply and the battery is disconnected, reducing internal current consumption and thus minimizing leakage current. This prevents the user's battery from running out of power or the vehicle from failing to start.
[0003] Existing motion detection switches, because the upper bridge is a Schottky diode, have reverse leakage through the diode, resulting in voltage on the U, V, and W phase lines, preventing the power switch from disconnecting. This makes them unsuitable for applications using Schottky diode and MOSFET rectifier bridge voltage regulators. Utility Model Content
[0004] This invention aims to solve the technical problem that existing voltage regulators cannot disconnect the power supply to the internal circuit of the voltage regulator, resulting in the leakage current of the whole machine failing to meet the requirements.
[0005] To achieve the objectives of this utility model, the following technical solution is adopted:
[0006] A rectifier voltage regulator with an action detection switch includes a rectifier bridge, an action detection switch circuit, and a power supply circuit connected in sequence. The rectifier bridge is connected to a three-phase power supply. The action detection switch circuit includes transistors Q1 to Q3, with the bases of transistors Q1 to Q3 connected to diodes D1 to D3 respectively. Diodes D1 to D3 are connected to the three-phase power supply through resistors R2, R4, and R6 respectively. The collectors of transistors Q1 to Q3 are connected to resistors R1, R3, and R5 respectively. The power supply circuit includes transistors Q4 to Q6, with the base of transistor Q4 connected to resistors R1, R3, and R5. The collectors of transistor Q4, Q5, and Q6 are connected to the BATT voltage terminal, and the emitter of transistor Q6 is connected to the VCC voltage terminal.
[0007] In some embodiments, the emitter of transistor Q4 is connected to the ground terminal.
[0008] In some embodiments, a resistor R7 and a capacitor C1 are connected in parallel between the ground terminal and the base of the transistor Q4.
[0009] In some embodiments, resistors R8 and R9 are provided between the BATT voltage terminal and the collector of transistor Q4, and the base of transistor Q5 is connected between resistors R8 and R9.
[0010] In some embodiments, a resistor R10 is provided between the collector of transistor Q5 and the base of transistor Q6, and a capacitor C2 is provided between the collector of transistor Q4 and the ground terminal.
[0011] In some embodiments, the emitter of transistor Q1 is connected to phase U, the emitter of transistor Q2 is connected to phase W, the emitter of transistor Q3 is connected to phase V, one end of resistor R2 is connected between phase W and the emitter of transistor Q2, and one end of resistor R4 is connected between the emitter of transistor Q3 and phase V.
[0012] In some embodiments, the rectifier bridge includes three diodes and three MOSFETs, with each diode corresponding to one MOSFET.
[0013] The rectifier voltage regulator with an action detection switch provided by this utility model has the following advantages:
[0014] This invention employs an action detection switch circuit with transistors Q1 to Q3, diodes D1 to D3, and resistors R2, R4, and R6. A voltage drop must be formed to turn on the power supply to the internal circuit of the voltage regulator; otherwise, the power supply to the internal circuit of the voltage regulator remains disconnected, thereby preventing power supply after the engine stops. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in 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.
[0016] Figure 1 This is a circuit diagram of a rectifier voltage regulator with an action detection switch provided in an embodiment of this utility model.
[0017] Figure 2 This is a schematic diagram of the motion detection switch circuit provided in an embodiment of this utility model. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0019] In this embodiment, "several" and "more than" refer to two or more. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.
[0021] like Figure 1 and Figure 2 As shown, this embodiment provides a rectifier voltage regulator with an action detection switch, including a rectifier bridge 100, an action detection switch circuit, a power supply circuit, a control circuit, and a sampling circuit connected in sequence. The rectifier bridge is connected to a three-phase power supply, converting the input voltage of the AC power supply into a unidirectional DC voltage. Specifically, the rectifier bridge in this embodiment includes three diodes and three MOSFETs, with each diode corresponding to one MOSFET, and the diodes and MOSFETs are positioned between the BATT voltage terminal and the ground terminal GND. The action detection switch circuit includes transistors Q1 to Q3. The bases of transistors Q1 to Q3 are connected to diodes D1 to D3, respectively. Diodes D1 to D3 are connected to the three-phase power supply through resistors R2, R4, and R6, respectively. The collectors of transistors Q1 to Q3 are connected to resistors R1, R3, and R5, respectively. The power supply circuit includes transistors Q4 to Q6. The base of transistor Q4 is connected to resistors R1, R3, and R5. The collector of transistor Q4, the emitter of transistor Q5, and the collector of transistor Q6 are connected to the BATT voltage terminal, respectively. The emitter of transistor Q6 is connected to the VCC voltage terminal.
[0022] Specifically, the emitter of transistor Q4 is connected to the ground terminal, and a resistor R7 and a capacitor C1 are connected in parallel between the ground terminal and the base of transistor Q4. A resistor R8 and a resistor R9 are connected between the BATT voltage terminal and the collector of transistor Q4, and the base of transistor Q5 is connected between the resistors R8 and R9.
[0023] A resistor R10 is provided between the collector of transistor Q5 and the base of transistor Q6, and a capacitor C2 is provided between the collector of transistor Q4 and the ground terminal. The emitter of transistor Q1 is connected to phase U, the emitter of transistor Q2 is connected to phase W, and the emitter of transistor Q3 is connected to phase V. One end of resistor R2 is connected between phase W and the emitter of transistor Q2, and one end of resistor R4 is connected between the emitter of transistor Q3 and phase V.
[0024] The working principle of the rectifier voltage regulator with action detection switch in this embodiment will be explained below with reference to the schematic diagram, in which the emitter e, base b and collector c of the transistor are shown.
[0025] When the vehicle starts, the engine drives the magneto, and AC power is input to the voltage regulator. Assuming the U phase is positive and the V phase is negative, the current flows through the base-emitter junction of transistor Q1, then through diode D1, resistor R4, and the V phase, forming a path, and the collector-emitter junction of transistor Q1 conducts. Then, the U-phase current flows through the collector-emitter junction of transistor Q1, resistor R1, to the base-emitter junction of transistor Q4, and then to ground. It then returns to the V phase through the lower-side MOSFET of the rectifier bridge, forming a path, and the collector-emitter junction of transistor Q4 conducts. The current then flows from the base-emitter junction of transistor Q5 through resistor R9, the collector-emitter junction of transistor Q4, to ground, and then back to the V phase through the lower-side MOSFET. The collector-emitter junction of transistor Q5 conducts, transistor Q6 conducts, and the BATT voltage (battery voltage) is converted to Vcc voltage (supply voltage) to provide power to the subsequent circuits. Similarly, the other three phases operate on the same principle.
[0026] When the vehicle stops, the engine stops running, and no voltage drop can be formed between the U phase and the V phase. Transistors Q1, Q4, Q5, and Q6 are cut off, thus shutting off the Vcc power supply.
[0027] This embodiment employs an action detection switch circuit with transistors Q1 to Q3, diodes D1 to D3, and resistors R2, R4, and R6. A voltage drop must be generated to turn on the power supply to the internal circuit of the voltage regulator; otherwise, the power supply to the internal circuit of the voltage regulator remains disconnected.
[0028] The technical principles of this utility model have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.
Claims
1. A rectifier voltage regulator with an action detection switch, characterized in that, The device includes a rectifier bridge, an action detection switch circuit, and a power supply circuit connected in sequence. The rectifier bridge is connected to a three-phase power supply. The action detection switch circuit includes transistors Q1 to Q3, with the bases of transistors Q1 to Q3 connected to diodes D1 to D3 respectively. Diodes D1 to D3 are connected to the three-phase power supply through resistors R2, R4, and R6 respectively. The collectors of transistors Q1 to Q3 are connected to resistors R1, R3, and R5 respectively. The power supply circuit includes transistors Q4 to Q6, with the base of transistor Q4 connected to resistors R1, R3, and R5. The collectors of transistor Q4, Q5, and Q6 are connected to the BATT voltage terminal, and the emitter of transistor Q6 is connected to the VCC voltage terminal.
2. The rectifier voltage regulator with an action detection switch according to claim 1, characterized in that, The emitter of transistor Q4 is connected to the ground terminal.
3. The rectifier voltage regulator with an action detection switch according to claim 2, characterized in that, A resistor R7 and a capacitor C1 are connected in parallel between the grounding terminal and the base of the transistor Q4.
4. The rectifier voltage regulator with an action detection switch according to claim 3, characterized in that, Resistors R8 and R9 are provided between the BATT voltage terminal and the collector of transistor Q4, and the base of transistor Q5 is connected between resistors R8 and R9.
5. The rectifier voltage regulator with an action detection switch according to claim 4, characterized in that, A resistor R10 is provided between the collector of transistor Q5 and the base of transistor Q6, and a capacitor C2 is provided between the collector of transistor Q4 and the ground terminal.
6. The rectifier voltage regulator with an action detection switch according to claim 1, characterized in that, The emitter of transistor Q1 is connected to phase U, the emitter of transistor Q2 is connected to phase W, and the emitter of transistor Q3 is connected to phase V. One end of resistor R2 is connected between phase W and the emitter of transistor Q2, and one end of resistor R4 is connected between the emitter of transistor Q3 and phase V.
7. The rectifier voltage regulator with an action detection switch according to claim 1, characterized in that, The rectifier bridge includes three diodes and three MOSFETs, with each diode corresponding to one MOSFET.