Engine ignition anti-restart circuit and mower

Abstract

The utility model discloses an engine ignition anti-restart circuit and a mower, the circuit comprises an engine starter, a controller, a relay, a capacitor, a diode and a power supply, the engine starter is connected with one end of the relay, the other end of the relay is connected with one end of the controller, and the capacitor is connected with the diode. The other end of the controller is connected with the cathode of the diode and the anode of the capacitor, the cathode of the capacitor is grounded, and the anode of the diode is connected with the power supply. Power backflow is prevented by using the unilateral conduction characteristic of the isolation diode, the capacitor provides power for the controller when the voltage drops, the number of used components is small, the cost is saved, the application range is wide, and the problem of controller restarting when the engine of the hybrid power mower is started is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to an engine ignition and restart prevention circuit and a lawn mower for hybrid power. Background Art

[0002] Due to various reasons, the newly added electrical equipment still has some unsatisfactory aspects in use, mainly causing the newly added equipment to restart when the engine is started. The ignition restart phenomenon is determined by the power supply in the vehicle-mounted equipment.

[0003] The general DC power supply input voltage range is ±10%. The specially designed wide voltage input range is only -25% and +50%, that is, the actual input voltage range of a nominal 12VDC DC power supply is 9VDC to 18VDC.

[0004] Since the actual battery voltage is much lower than 9V when the engine is started, the controller will stop working due to low voltage when the engine is started. The battery voltage will rise when the start is completed, so the controller will restart when the voltage rises to the rated value. Utility Model Content

[0005] In view of the above technical problems, the utility model provides an anti-restart circuit for engine ignition of a hybrid power lawn mower to solve the problem of controller restarting when the engine of the hybrid power lawn mower is started.

[0006] An embodiment of the utility model provides an engine ignition and restart prevention circuit, the circuit comprising an engine starter, a controller, a relay, a capacitor, a diode and a power supply, the engine starter is connected to one end of the relay, the other end of the relay is connected to one end of the controller, the other end of the controller is respectively connected to the cathode of the diode and the anode of the capacitor, the cathode of the capacitor is grounded, and the anode of the diode is connected to the power supply.

[0007] Optionally, the circuit further includes a fuse, the first pin of the relay is connected to the third pin of the controller, the third pin of the relay is connected to one end of the fuse, and the other end of the fuse is connected to a power source.

[0008] Optionally, the diode is a 1N4007 diode, which is used to prevent power backflow.

[0009] Optionally, the capacity of the capacitor is 22000 μF, and the capacitor is used to provide power to the controller when the power supply voltage drops.

[0010] Optionally, the engine further comprises a flywheel ring gear and a crankshaft, and the engine starter drives the engine flywheel ring gear and the crankshaft to rotate, and the engine enters a self-running state.

[0011] Optionally, the power supply is a 12V power supply.

[0012] Optionally, the circuit is applied to a lawn mower.

[0013] The utility model also provides a lawn mower, including an engine and a motor, and also includes an engine ignition and anti-restart circuit, the circuit includes an engine starter, a controller, a relay, a capacitor, a diode and a power supply, the engine starter is connected to one end of the relay, the other end of the relay is connected to one end of the controller, the other end of the controller is respectively connected to the cathode of the diode and the anode of the capacitor, the cathode of the capacitor is grounded, and the anode of the diode is connected to the power supply.

[0014] Optionally, the circuit further includes a fuse, the first pin of the relay is connected to the third pin of the controller, the third pin of the relay is connected to one end of the fuse, and the other end of the fuse is connected to a power source.

[0015] Optionally, the diode is a 1N4007 diode, which is used to prevent power backflow, and the capacity of the capacitor is 22000 μF, and the capacitor is used to provide power to the controller when the power supply voltage drops.

[0016] In the technical solution provided by the embodiment of the utility model, the engine starter is connected to one end of the relay, the other end of the relay is connected to one end of the controller, the other end of the controller is respectively connected to the cathode of the diode and the anode of the capacitor, the cathode of the capacitor is grounded, and the anode of the diode is connected to the power supply. Compared with the prior art, when the power supply voltage drops, the utility model utilizes the unidirectional conductive characteristics of the isolation diode to prevent power backflow, and the capacitor provides power for the controller when the voltage drops. Fewer components are used, which saves costs and has a wide range of applications, solving the problem of controller restarting when the hybrid power lawn mower engine is started. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a circuit diagram of an engine ignition and restart prevention circuit. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0019] It should be noted that when an element is described as being "connected" or "connected to" another element, it may be directly connected to the other element, or one or more intermediate elements may exist therebetween. The terms "upper", "lower", "inner", "outer", etc. used in this specification indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention.

[0020] The utility model provides an engine ignition anti-restart circuit, please refer to Figure 1 As shown, the circuit includes an engine starter, a controller, a relay, a capacitor, a diode and a power supply, the engine starter is connected to one end of the relay, the other end of the relay is connected to one end of the controller, the other end of the controller is respectively connected to the cathode of the diode and the anode of the capacitor, the cathode of the capacitor is grounded, and the anode of the diode is connected to the power supply.

[0021] Specifically, the power supply is a 12V power supply, and the positive electrode of the power supply is connected to the positive electrode of the diode. The negative electrode of the diode is connected to the positive electrode of the capacitor, and the negative electrode of the capacitor is grounded. The positive electrode of the capacitor is also connected to the first pin of the controller, that is, the VCC pin, the second pin of the controller is grounded, the third pin of the controller, that is, the DO pin, is connected to the first pin of the relay, the second pin of the relay is grounded, the third pin of the relay is connected to the second pin of the fuse, the first pin of the fuse is connected to the 12V power supply, and the fourth pin of the relay is connected to the first pin of the engine starter, and the second pin of the engine starter is grounded.

[0022] In one embodiment of the present invention, the diode is a 1N4007 diode, and the unidirectional conductive property of the isolation diode is used to prevent power backflow.

[0023] In one embodiment of the present invention, the capacity of the capacitor is 22000 μF, and the capacitor is used to provide power to the controller when the power supply voltage drops. The fuse is used to prevent the load from overloading and provide overload protection.

[0024] In one embodiment of the utility model, the engine further comprises a flywheel ring gear and a crankshaft, and the engine starter drives the engine flywheel ring gear and the crankshaft to rotate, so that the starting work can be circulated, thereby allowing the engine to enter a self-running state.

[0025] When the DO pin of the utility model controller outputs, the relay is energized, and when the engine starter works, the power supply voltage drops. The unidirectional conductive characteristic of the isolation diode is used to prevent power backflow, and the capacitor provides working power for the controller when the voltage drops.

[0026] The engine ignition and restart prevention circuit described in the utility model is mainly used for hybrid power lawn mowers. Those skilled in the art will appreciate that the engine ignition and restart prevention circuit described in the utility model can also be used for other electric tools.

[0027] The engine ignition and restart prevention circuit of the utility model has a simple structure, uses fewer components, saves costs, has a wide range of applications, and solves the problem of controller restarting when the engine of a hybrid power lawn mower is started.

[0028] The utility model also provides a lawn mower, which includes an engine and a motor, and also includes an engine ignition and anti-restart circuit, the circuit includes an engine starter, a controller, a relay, a capacitor, a diode and a power supply, the engine starter is connected to one end of the relay, the other end of the relay is connected to one end of the controller, the other end of the controller is respectively connected to the cathode of the diode and the anode of the capacitor, the cathode of the capacitor is grounded, and the anode of the diode is connected to the power supply.

[0029] Specifically, the power supply is a 12V power supply, and the positive electrode of the power supply is connected to the positive electrode of the diode. The negative electrode of the diode is connected to the positive electrode of the capacitor, and the negative electrode of the capacitor is grounded. The positive electrode of the capacitor is also connected to the first pin of the controller, that is, the VCC pin, the second pin of the controller is grounded, the third pin of the controller, that is, the DO pin, is connected to the first pin of the relay, the second pin of the relay is grounded, the third pin of the relay is connected to the second pin of the fuse, the first pin of the fuse is connected to the 12V power supply, and the fourth pin of the relay is connected to the first pin of the engine starter, and the second pin of the engine starter is grounded.

[0030] In one embodiment of the present invention, the diode is a 1N4007 diode, and the unidirectional conductive property of the isolation diode is used to prevent power backflow.

[0031] In one embodiment of the present invention, the capacity of the capacitor is 22000 μF, and the capacitor is used to provide power to the controller when the power supply voltage drops. The fuse is used to prevent the load from overloading and provide overload protection.

[0032] In one embodiment of the utility model, the engine further comprises a flywheel ring gear and a crankshaft, and the engine starter drives the engine flywheel ring gear and the crankshaft to rotate, so that the starting work can be circulated, thereby allowing the engine to enter a self-running state.

[0033] When the DO pin of the utility model controller outputs, the relay is energized, and when the engine starter works, the power supply voltage drops. The unidirectional conductive characteristic of the isolation diode is used to prevent power backflow, and the capacitor provides working power for the controller when the voltage drops.

[0034] In the several embodiments provided in the present application, it should be understood that the circuit or device embodiments described above are merely illustrative. In addition, the connections, direct connections, or communication connections between the components shown or discussed may be through some interfaces, indirect couplings or communication connections of devices or units, which may be electrical, mechanical, or other forms.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An engine ignition and restart prevention circuit, characterized in that: The circuit includes an engine starter, a controller, a relay, a capacitor, a diode and a power supply. The engine starter is connected to one end of the relay, the other end of the relay is connected to one end of the controller, the other end of the controller is respectively connected to the cathode of the diode and the anode of the capacitor, the cathode of the capacitor is grounded, and the anode of the diode is connected to the power supply.

2. The engine ignition and restart prevention circuit according to claim 1, characterized in that: The circuit also includes a fuse, the first pin of the relay is connected to the third pin of the controller, the third pin of the relay is connected to one end of the fuse, and the other end of the fuse is connected to a power source.

3. The engine ignition and restart prevention circuit according to claim 1, characterized in that: The diode is a 1N4007 diode, which is used to prevent power backflow.

4. The engine ignition and restart prevention circuit according to claim 1, characterized in that: The capacity of the capacitor is 22000 μF, and the capacitor is used to provide power to the controller when the power supply voltage drops.

5. The engine ignition and restart prevention circuit according to claim 1, characterized in that: The engine also includes a flywheel ring gear and a crankshaft. The engine starter drives the engine flywheel ring gear and the crankshaft to rotate, and the engine enters a self-running state.

6. The engine ignition and restart prevention circuit according to claim 1, characterized in that: The power supply is a 12V power supply.

7. The engine ignition and restart prevention circuit according to claim 1, characterized in that: The circuit is applied to a lawn mower.

8. A lawn mower, comprising an engine and a motor, characterized in that: It also includes an engine ignition and anti-restart circuit, which includes an engine starter, a controller, a relay, a capacitor, a diode and a power supply. The engine starter is connected to one end of the relay, the other end of the relay is connected to one end of the controller, and the other end of the controller is respectively connected to the cathode of the diode and the anode of the capacitor. The cathode of the capacitor is grounded, and the anode of the diode is connected to the power supply.

9. The lawn mower according to claim 8, characterized in that The circuit also includes a fuse, the first pin of the relay is connected to the third pin of the controller, the third pin of the relay is connected to one end of the fuse, and the other end of the fuse is connected to a power source.

10. The lawn mower according to claim 8, characterized in that The diode is a 1N4007 type diode, which is used to prevent power backflow. The capacity of the capacitor is 22000 μF, and the capacitor is used to provide power to the controller when the power supply voltage drops.

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