Outboard motor rectification voltage stabilizer with function of switching off output when battery is switched off

Abstract

The utility model discloses an outboard motor rectification voltage stabilizer with a function of turning off output when a battery is disconnected, which comprises a bridge type rectification circuit and a silicon controlled rectifier trigger loop, the bridge type rectification circuit comprises an alternating current power supply and a rectification loop, the positive output end of the rectification loop is connected with an external battery, and the negative output end of the rectification loop is grounded. The rectification loop comprises at least one silicon controlled rectifier, the silicon controlled rectifier trigger loop comprises a PNP triode Q2, a resistor R1 and a resistor R7, an emitting electrode of the PNP triode Q2 is connected with an external battery, a collecting electrode of the PNP triode Q2 is connected with a control electrode of the silicon controlled rectifier, a base electrode of the PNP triode Q2 is simultaneously connected with the resistor R1 and the resistor R7, and the other end of the resistor R7 is grounded. And the other end of the resistor R1 is connected with the emitter of the PNP triode Q2. According to the scheme, the output can be automatically cut off when the external battery is not connected or the battery is abnormally cut off, so that the occurrence of overwater safety accidents is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rectifier regulators, and particularly relates to an outboard motor rectifier regulator with a function of shutting off the output when the battery is disconnected. Background Art

[0002] A rectifier regulator is an electronic device that converts alternating current (AC) into direct current (DC) and keeps the output voltage stable. Rectifier regulators are widely used in various electronic devices.

[0003] An outboard motor, also known as an outboard engine or an outboard motor, is a small marine engine installed outside the hull, mainly used for small boats and speedboats, and has a very high popularity rate. It usually consists of an engine, a propeller and a suspension bracket, and can be directly suspended at the rear or side of the boat to provide power for the boat.

[0004] The outboard motor rectifier regulator is a rectifier regulator used on an outboard motor. The circuit block diagram of the rectifier regulator of the outboard motor in the prior art is as shown in the appendix Figure 1 As shown, it includes a bridge rectifier circuit and a thyristor trigger circuit. The bridge rectifier circuit includes an AC power supply and a rectifier circuit. The positive output terminal of the rectifier circuit is connected to an external battery, and the negative output terminal of the rectifier circuit is grounded. There are two diodes D3 and D4 connected between the thyristor trigger circuit and the AC power supply. Diodes D3 and D4 serve as the drive signals of the thyristor trigger circuit, and the thyristor trigger circuit provides trigger signals for thyristors SCR1 and SCR2. In the working process of the rectifier regulator of the outboard motor in the prior art, when the external battery is not connected or the battery is abnormally disconnected, the AC power supply provides drive signals to the thyristor trigger circuit through diodes D3 and D4, and then the thyristor trigger circuit provides trigger signals for thyristors SCR1 and SCR2, so that the rectifier circuit is turned on, and the rectifier regulator still has voltage output. In this way, when the external battery is not connected or the battery is abnormally disconnected, it is easy to occur electric shock, short circuit and other situations, and thus it is easy to cause water safety accidents. Summary of the Utility Model

[0005] Aiming at the above deficiencies existing in the prior art, the technical problem to be solved by the utility model is: how to provide an outboard motor rectifier regulator with a function of shutting off the output when the battery is disconnected, which can automatically disconnect the output when the external battery is not connected or the battery is abnormally disconnected, thereby reducing the occurrence of water safety accidents.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An outboard rectifier regulator with the function of turning off the output when the battery is disconnected, comprising a bridge rectifier circuit and a thyristor trigger circuit. The bridge rectifier circuit includes an AC power supply and a rectifier circuit. The positive output terminal of the rectifier circuit is connected to an external battery, and the negative output terminal of the rectifier circuit is grounded. The rectifier circuit includes at least one thyristor. The thyristor trigger circuit includes a PNP triode Q2, a resistor R1, and a resistor R7. The emitter of the PNP triode Q2 is connected to the external battery, the collector of the PNP triode Q2 is connected to the control electrode of the thyristor, the base of the PNP triode Q2 is connected to both the resistor R1 and the resistor R7 at the same time, the other end of the resistor R7 is grounded, and the other end of the resistor R1 is connected to the emitter of the PNP triode Q2.

[0008] The principle of this solution is as follows: When the external battery is normally connected, a path is formed between the battery → resistor R1 → resistor R7 → ground. The resistors R1 and R7 provide a suitable bias voltage and current for the PNP triode Q2 through voltage division, making the PNP triode Q2 conduct. At this time, the PNP triode Q2 provides a trigger signal for the thyristor in the rectifier circuit, making the thyristor in the rectifier circuit conduct, and then making the rectifier circuit form a path, the rectifier regulator outputs, and there is a voltage output at the battery terminal.

[0009] When the external battery is not connected or the battery is accidentally disconnected during operation, a path cannot be formed between the battery → resistor R1 → resistor R7 → ground, so that the PNP triode Q2 has no bias voltage and current, and the PNP triode Q2 is in the cut-off state. The thyristor in the rectifier circuit has no trigger signal and is in the off state, and then the rectifier circuit cannot form a path, and the rectifier regulator has no output. At this time, there is no voltage output at the battery terminal.

[0010] Therefore, this solution can make the rectifier regulator automatically disconnect the output when the external battery is not connected or the battery is accidentally disconnected during operation, and then there is no voltage output at the battery terminal. Therefore, electric shock, short circuit and other situations will not occur when the external battery is not connected or the battery is abnormally disconnected, thus reducing the occurrence of water safety accidents.

[0011] Preferably, the rectifier circuit includes an upper bridge arm and a lower bridge arm. The upper bridge arm includes a diode D1 and a diode D2, and the lower bridge arm includes a thyristor SCR1 and a thyristor SCR2. The control electrodes of the thyristor SCR1 and the thyristor SCR2 are both connected to the collector of the PNP triode Q2.

[0012] In this way, diodes D1, D2, thyristors SCR1, and SCR2 form a rectification circuit. When no external battery is connected or the battery is accidentally disconnected during operation, the PNP transistor Q2 is in the cut-off state and cannot provide a trigger signal for thyristors SCR1 and SCR2. As a result, a path cannot be formed among diodes D1, D2, thyristors SCR1, and SCR2, and the rectifier regulator has no output. At this time, there is no voltage output at the battery terminal.

[0013] When the external battery is normally connected, the PNP transistor Q2 conducts. At this time, the PNP transistor Q2 provides a trigger signal for thyristors SCR1 and SCR2, and a path is formed among diodes D1, D2, thyristors SCR1, and SCR2. The rectifier regulator outputs, and there is a voltage output at the battery terminal.

[0014] Preferably, the control electrode of thyristor SCR1 is connected to the cathode of diode D5, and the anode of diode D5 is connected to the collector of PNP transistor Q2;

[0015] The control electrode of thyristor SCR2 is connected to the cathode of diode D6, and the anode of diode D6 is connected to the collector of PNP transistor Q2.

[0016] In this way, diodes D5 and D6 play an isolation role to prevent reverse conduction.

[0017] Preferably, the anode of diode D5 is connected to the collector of PNP transistor Q2 through resistor R5;

[0018] The anode of diode D6 is connected to the collector of PNP transistor Q2 through resistor R6.

[0019] In this way, resistors R5 and R6 play a current-limiting role.

[0020] Preferably, the control electrode of thyristor SCR1 is also connected to the negative output terminal of the AC power supply through resistor R3;

[0021] The control electrode of thyristor SCR2 is also connected to the positive output terminal of the AC power supply through resistor R4.

[0022] In this way, resistors R3 and R4 respectively play an anti-interference role for the control electrodes of thyristors SCR1 and SCR2.

[0023] Preferably, the thyristor trigger circuit further includes a PNP triode Q1, a resistor R2, a resistor R8, and a capacitor C2. The collector of the PNP triode Q1 is connected to the base of the PNP triode Q2, the emitter of the PNP triode Q1 is connected to the emitter of the PNP triode Q2, the base of the PNP triode Q2 is simultaneously connected to one end of the resistor R2, one end of the resistor R8, and one end of the capacitor C2, and the other end of the capacitor C2 and the other end of the resistor R2 are both connected to the emitter of the PNP triode Q1.

[0024] In this way, the resistor R2, the resistor R8, and the capacitor C2 can provide a suitable operating point for the conduction of the PNP triode Q1 through voltage division.

[0025] Preferably, the thyristor trigger circuit further includes an NPN triode Q3, a resistor R9, a resistor R10, and a capacitor C3. The emitter of the NPN triode Q3 is grounded, the collector of the NPN triode Q3 is connected to the base of the PNP triode Q1 through the resistor R8, the base of the NPN triode Q3 is simultaneously connected to the capacitor C3, the resistor R10, and the resistor R9, the other end of the capacitor C3 is grounded, and the other end of the resistor R10 is grounded.

[0026] In this way, the resistor R9, the resistor R10, and the capacitor C3 can provide a suitable operating point for the conduction of the NPN triode Q3 through voltage division.

[0027] Preferably, the thyristor trigger circuit further includes a capacitor C1, and the capacitor C1 is connected in parallel with the resistor R1.

[0028] In this way, the capacitor C1, together with the resistor R1 and the resistor R7, provides a suitable operating point for the conduction of the PNP triode Q2 through voltage division.

[0029] Preferably, the outboard engine rectifier voltage regulator further includes a voltage stabilizing circuit, and the voltage stabilizing circuit includes a zener diode Z1. The cathode of the zener diode Z1 is connected to the positive output terminal of the rectification circuit, and the anode of the zener diode Z1 is connected to the resistor R9 and the base of the NPN triode Q3.

[0030] In this way, the zener diode Z1 plays a voltage stabilizing role, making the battery terminal voltage stable at about 14.5V. Description of the Drawings

[0031] Figure 1 is a circuit block diagram of an outboard engine rectifier voltage regulator in the prior art;

[0032] Figure 2 is a circuit block diagram of the outboard engine rectifier voltage regulator of the present invention having a function of turning off the output when the battery is disconnected;

[0033] Figure 3 This is the specific circuit diagram of the outboard rectifier voltage regulator of the present utility model with the function of turning off the output when the battery is disconnected. Specific embodiments

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of this utility model is normally placed. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] As shown in the appendixFigure 2 and attached Figure 3 As shown, an outboard rectifier regulator with a function of turning off the output when the battery is disconnected includes a bridge rectifier circuit, a thyristor trigger circuit, and a voltage regulator circuit. The bridge rectifier circuit includes an AC power supply and a rectifier circuit. The positive output terminal of the rectifier circuit is connected to an external battery, and the negative output terminal of the rectifier circuit is grounded. The rectifier circuit includes at least one thyristor. Specifically, the rectifier circuit includes an upper bridge arm and a lower bridge arm. The upper bridge arm includes diode D1 and diode D2, and the lower bridge arm includes thyristor SCR1 and thyristor SCR2. Diode D1, diode D2, thyristor SCR1, and thyristor SCR2 form a rectifier bridge to form a path. The control electrode of thyristor SCR1 is also connected to the negative output terminal (AC2~) of the AC power supply through resistor R3; the control electrode of thyristor SCR2 is also connected to the positive output terminal (AC1~) of the AC power supply through resistor R4. In this way, resistor R3 and resistor R4 respectively play an anti-interference role for the control electrodes of thyristor SCR1 and thyristor SCR2.

[0037] The thyristor trigger circuit includes PNP transistor Q2, resistor R1, resistor R7, capacitor C1, PNP transistor Q1, resistor R2, resistor R8, capacitor C2, NPN transistor Q3, resistor R9, resistor R10, and capacitor C3. The emitter of PNP transistor Q2 is connected to an external battery. The collector of PNP transistor Q2 is connected to the control electrode of thyristor SCR1 through resistor R5 and diode D5 on the one hand, and the control electrode of thyristor SCR1 is connected to the cathode of diode D5. On the other hand, it is connected to the control electrode of thyristor SCR2 through resistor R6 and diode D6, and the control electrode of thyristor SCR2 is connected to the cathode of diode D6. Diodes D5 and D6 play an isolation role to prevent reverse conduction, and resistors R5 and R6 play a current limiting role. The base of PNP transistor Q2 is connected to resistor R1 and resistor R7 at the same time. The other end of resistor R7 is grounded, and the other end of resistor R1 is connected to the emitter of PNP transistor Q2. Capacitor C1 is connected in parallel with resistor R1. In this way, capacitor C1, resistor R1, and resistor R7 together provide a suitable operating point for the conduction of PNP transistor Q2 through voltage division.

[0038] The collector of PNP transistor Q1 is connected to the base of PNP transistor Q2, and the emitter of PNP transistor Q1 is connected to the emitter of PNP transistor Q2. The base of PNP transistor Q2 is connected to one end of resistor R2, one end of resistor R8, and one end of capacitor C2 at the same time. The other end of capacitor C2 and the other end of resistor R2 are both connected to the emitter of PNP transistor Q1. In this way, resistor R2, resistor R8, and capacitor C2 can provide a suitable operating point for the conduction of PNP transistor Q1 through voltage division.

[0039] The emitter of NPN transistor Q3 is grounded. The collector of NPN transistor Q3 is connected to the base of PNP transistor Q1 through resistor R8. The base of NPN transistor Q3 is simultaneously connected to capacitor C3, resistor R10, and resistor R9. The other end of capacitor C3 is grounded, and the other end of resistor R10 is grounded. In this way, resistors R9, R10, and capacitor C3 can provide a suitable operating point for the conduction of NPN transistor Q3 through voltage division.

[0040] The voltage stabilizing circuit includes a voltage stabilizing diode Z1. The cathode of voltage stabilizing diode Z1 is connected to the positive output terminal of the rectification circuit, and the anode of voltage stabilizing diode Z1 is connected to the base of resistor R9 and NPN transistor Q3. In this way, voltage stabilizing diode Z1 plays a voltage stabilizing role, making the battery terminal voltage stable at about 14.5V.

[0041] The principle of this solution is as follows: When an external battery is normally connected, a path is formed between the battery → resistor R1 → resistor R7 → ground. Resistors R1 and R7 provide a suitable bias voltage and current for PNP transistor Q2 through voltage division, making PNP transistor Q2 conduct. At this time, PNP transistor Q2 provides a trigger signal for the control electrodes of thyristors SCR1 and SCR2, enabling diodes D1, D2, thyristors SCR1, and SCR2 to form a path of the rectification circuit, and the rectification voltage regulator outputs, and there is a voltage output at the battery terminal.

[0042] When no external battery is connected or the battery is accidentally disconnected during operation, a path cannot be formed between the battery → resistor R1 → resistor R7 → ground, resulting in no bias voltage and current for PNP transistor Q2. PNP transistor Q2 is in the cut-off state and cannot provide a trigger signal for thyristors SCR1 and SCR2. At this time, thyristors SCR1 and SCR2 have no trigger signal and are in the off state, further preventing a path from being formed between diodes D1, D2, thyristors SCR1, and SCR2. The rectification voltage regulator has no output, and there is no voltage output at the battery terminal at this time.

[0043] Therefore, this solution can automatically disconnect the output of the rectification voltage regulator when no external battery is connected or the battery is accidentally disconnected during operation, and then there is no voltage output at the battery terminal. Therefore, electric shock, short circuit, etc. will not occur when the external battery is not connected or the battery is abnormally disconnected, thereby reducing the occurrence of water safety accidents.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and do not limit the technical solutions. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present invention without departing from the purpose and scope of the present technical solution should be covered by the scope of the claims of the present invention.

Claims

1. An outboard rectifier regulator with a function of turning off the output when the battery is disconnected, comprising a bridge rectifier circuit and a thyristor trigger circuit. The bridge rectifier circuit includes an AC power supply and a rectifier circuit. The positive output terminal of the rectifier circuit is connected to an external battery, and the negative output terminal of the rectifier circuit is grounded. It is characterized in that, The rectification circuit includes at least one thyristor. The thyristor trigger circuit includes a PNP triode Q2, a resistor R1, and a resistor R7. The emitter of the PNP triode Q2 is connected to an external battery. The collector of the PNP triode Q2 is connected to the control electrode of the thyristor. The base of the PNP triode Q2 is connected to both the resistor R1 and the resistor R7. The other end of the resistor R7 is grounded. The other end of the resistor R1 is connected to the emitter of the PNP triode Q2.

2. The outboard rectifier regulator with the function of turning off the output when the battery is disconnected according to claim 1, characterized in that, The rectification circuit includes an upper arm and a lower arm. The upper arm includes a diode D1 and a diode D2. The lower arm includes a thyristor SCR1 and a thyristor SCR2. The control electrodes of the thyristor SCR1 and the thyristor SCR2 are both connected to the collector of the PNP triode Q2.

3. The outboard rectifier regulator with the function of turning off the output when the battery is disconnected according to claim 2, characterized in that, The control electrode of the thyristor SCR1 is connected to the cathode of a diode D5. The anode of the diode D5 is connected to the collector of the PNP triode Q2. The control electrode of the thyristor SCR2 is connected to the cathode of a diode D6. The anode of the diode D6 is connected to the collector of the PNP triode Q2.

4. The outboard rectifier voltage regulator with the function of turning off the output when the battery is disconnected according to claim 3, characterized in that, The anode of the diode D5 is connected to the collector of the PNP triode Q2 through a resistor R5. The anode of the diode D6 is connected to the collector of the PNP triode Q2 through a resistor R6.

5. The outboard rectifier regulator with the function of turning off the output when the battery is disconnected according to claim 2, characterized in that, The control electrode of the thyristor SCR1 is also connected to the negative output terminal of the AC power supply through a resistor R3. The control electrode of the thyristor SCR2 is also connected to the positive output terminal of the AC power supply through a resistor R4.

6. The outboard rectifier regulator with the function of turning off the output when the battery is disconnected according to claim 1, characterized in that The thyristor trigger circuit further includes a PNP triode Q1, a resistor R2, a resistor R8, and a capacitor C2. The collector of the PNP triode Q1 is connected to the base of the PNP triode Q2. The emitter of the PNP triode Q1 is connected to the emitter of the PNP triode Q2. The base of the PNP triode Q2 is connected to one end of the resistor R2, one end of the resistor R8, and one end of the capacitor C2 at the same time. The other end of the capacitor C2 and the other end of the resistor R2 are both connected to the emitter of the PNP triode Q1.

7. The outboard rectifier voltage regulator with the function of turning off the output when the battery is disconnected according to claim 6, characterized in that, The thyristor trigger circuit further includes an NPN triode Q3, a resistor R9, a resistor R10, and a capacitor C3. The emitter of the NPN triode Q3 is grounded. The collector of the NPN triode Q3 is connected to the base of the PNP triode Q1 through a resistor R8. The base of the NPN triode Q3 is connected to the capacitor C3, the resistor R10, and the resistor R9 at the same time. The other end of the capacitor C3 is grounded. The other end of the resistor R10 is grounded.

8. The outboard rectifier regulator with the function of turning off the output when the battery is disconnected according to claim 1, characterized in that, The thyristor trigger circuit further includes a capacitor C1. The capacitor C1 is connected in parallel with the resistor R1.

9. The outboard rectifier regulator with the function of turning off the output when the battery is disconnected according to claim 7, characterized in that, The outboard engine rectifier regulator further includes a voltage stabilization circuit. The voltage stabilization circuit includes a zener diode Z1. The cathode of the zener diode Z1 is connected to the positive output terminal of the rectification circuit. The anode of the zener diode Z1 is connected to the base of the NPN triode Q3 through a resistor R9.

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