CN219459349U

CN219459349U - Motorcycle LED spotlight control circuit

Info

Publication number: CN219459349U
Application number: CN202320125778.XU
Authority: CN
Inventors: 郑乐波
Original assignee: Shenzhen Dongrixin Electronics Co ltd
Current assignee: Shenzhen Dongrixin Electronics Co ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-08-01
Anticipated expiration: 2033-01-13

Abstract

The utility model discloses a motorcycle LED spotlight control circuit which belongs to the technical field of LED spotlight, and comprises a lamp body, an ACC wire, a storage battery and an MCU, wherein the lamp body, the ACC wire, the storage battery and the MCU are arranged on a motorcycle, the MCU is respectively and electrically connected with a MUC power supply circuit, an anti-power-shortage protection circuit, an overvoltage protection circuit, a constant current circuit and an intelligent temperature control circuit, the output ends of the constant current circuit and the intelligent temperature control circuit are respectively connected with the lamp body, the input end of the MCU power supply circuit is connected with the ACC wire, and the positive end and the negative end of the storage battery are respectively connected with the input ends of the anti-power-shortage protection circuit and the overvoltage protection circuit. The utility model adds the protection circuit for preventing the power shortage, so that most of the power generated by the magneto of the motorcycle is used for charging the storage battery, saving energy and electricity, ensuring that the vehicle can be started normally after the vehicle is stopped, controlling the input voltage by the overvoltage protection circuit to avoid burning the lamp body, controlling the temperature of the lamp body by the intelligent temperature control circuit, and ensuring that the lamp body is not burnt and scalded.

Description

Motorcycle LED spotlight control circuit

Technical Field

The utility model belongs to the technical field of LED spotlight, and particularly relates to a motorcycle LED spotlight control circuit.

Background

As a tool for commuting and riding instead of walking, the motorcycle can not be driven on a night in daily life, and most of the current motorcycles are difficult to meet actual lighting requirements at night due to the fact that a few users select to install the LED spotlight. However, the conventional motorcycle LED spotlight generally has the following disadvantages:

1. at present, the power supply of a motorcycle is generally 12V, the working voltage of an auxiliary LED spotlight is between 12V and 24V, the battery of an electric vehicle is generally more than 48V, and when the auxiliary LED spotlight is installed, an installation master can possibly directly connect an LED spotlight to a 48V circuit due to self negligence, so that the spotlight is burnt out;

2. because the magneto of most small and medium-sized motorcycles has lower power generation (generally below 200W), and after the electric equipment such as an LED spotlight, a recorder, a mobile phone charger and the like is additionally arranged on the vehicle, the power consumption is larger than the power generation, and the shortage of power supply of a storage battery is easily caused when the vehicle is driven at night, so that the vehicle cannot be started normally after the vehicle is stopped;

3. when the motorcycle runs normally, the temperature of the LED spotlight is not high because of the air cooling effect, and when the LED spotlight is turned on because of the fact that the temperature of the spotlight body is too high (more than 95 ℃), the light is too fast, and even the spotlight bead is burnt out.

Disclosure of Invention

The utility model provides a motorcycle LED spotlight control circuit, which aims to solve the problems in the background technology by adding protection measures on the basis of the existing common motorcycle LED spotlight circuit.

In order to achieve the above purpose, the utility model provides a motorcycle LED spotlight control circuit, which comprises a lamp body, an ACC wire and a storage battery which are arranged on a motorcycle, and further comprises an MCU, a MUC power supply circuit, an anti-power-shortage protection circuit, an overvoltage protection circuit, a constant current circuit and an intelligent temperature control circuit, wherein the MCU is respectively and electrically connected with the MUC power supply circuit, the anti-power-shortage protection circuit, the overvoltage protection circuit, the constant current circuit and the intelligent temperature control circuit, the output ends of the constant current circuit and the intelligent temperature control circuit are respectively connected with the lamp body, the input end of the MCU power supply circuit is connected with the ACC wire, and the positive end and the negative end of the storage battery are respectively connected with the input ends of the anti-power-shortage protection circuit and the overvoltage protection circuit.

Preferably, the overvoltage protection circuit includes a resistor R19, a triode Q6, a MOS transistor Q8, and a zener diode D15, two ends of the resistor R19 are connected to the triode Q6 and the MOS transistor Q8, respectively, the other end of the triode Q6 is connected to the MOS transistor Q8, and when the voltage input to the overvoltage protection circuit is input to the MOS transistor Q8 through the zener diode D15, if the third voltage does not exceed the voltage stabilizing value of the zener diode D15, the MOS transistor Q8 is turned on, and if the third voltage exceeds the voltage stabilizing value of the zener diode D15, the MOS transistor Q8 is turned off.

Preferably, the power-fail-safe protection circuit includes R1 and R2, and when the voltage input to the power-fail-safe protection circuit is divided by R1 and R2, the voltage enters the MUC, and the MCU outputs a first voltage value.

Preferably, when the first voltage value exceeds a first preset upper limit voltage value, the MCU controls the constant current circuit to output a first current to the lamp body; when the first voltage value does not exceed a first preset lower limit voltage value, the MCU controls the constant current circuit to output a second current to the lamp body, wherein the first current is larger than the second current.

Preferably, the intelligent temperature control circuit includes a resistor R10, and when the voltage input into the intelligent temperature control circuit is divided by the resistor R10, the voltage enters the MUC, and the MCU outputs a second voltage value.

Preferably, when the second voltage value exceeds a second preset upper limit voltage value, the MCU controls the constant current circuit to output a third current to the lamp beads; and when the second voltage value does not exceed a second preset lower limit voltage value, the MUC controls the constant current circuit to output a fourth current to the lamp body, wherein the third current is larger than the fourth current.

Preferably, the motorcycle is characterized by further comprising a key and an indicator lamp, wherein the key and the indicator lamp are arranged on the motorcycle, and the MCU is electrically connected with the key and the indicator lamp.

Preferably, the lamp body comprises a first LED spotlight and a second LED spotlight, and the first LED spotlight and the second LED spotlight are symmetrically arranged on the motorcycle.

Preferably, the intelligent temperature control circuit further comprises a thermistor RT1 and a thermistor RT2, wherein the thermistor RT1 is arranged in the first LED spotlight, the thermistor RT2 is arranged in the second LED spotlight, the thermistor RT1 is connected with the thermistor RT2 in parallel, and one end of the parallel connection is grounded.

Preferably, the constant current circuit comprises a first constant current IC and a second constant current IC, the first LED spotlight is connected with the output ends of the first constant current IC and the intelligent temperature control circuit, and the second LED spotlight is connected with the output ends of the second constant current IC and the intelligent temperature control circuit.

The motorcycle LED spotlight control circuit provided by the utility model has the beneficial effects compared with the prior art:

through increasing the protection circuit of preventing the insufficient voltage, make the magneto of motorcycle generate electricity mostly be used for battery charging and energy-conserving power saving, ensure that the vehicle can normally start after stopping, input voltage too high accessible overvoltage protection circuit regulates and control, avoids burning out the lamp body to and regulate and control the lamp body temperature through intelligent temperature control circuit, ensure can not burn out the lamp body and scald the risk.

In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic diagram of a control circuit for an LED spotlight of a motorcycle according to the present utility model;

FIG. 2 is a schematic circuit diagram of a motorcycle LED spotlight control circuit according to the present utility model;

reference numerals: 1. an MCU; 2. a MUC power supply circuit; 3. a protection circuit for preventing power shortage; 4. an overvoltage protection circuit; 5. a constant current circuit; 6. an indicator light; 7. a first LED spotlight; 8. and a second LED spotlight.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The embodiment of the utility model provides a motorcycle LED spotlight control circuit, which is shown by referring to figures 1-2, and comprises a lamp body, ACC wires and a storage battery which are arranged on a motorcycle, and further comprises an MCU1, a MUC power supply circuit 2, an anti-power shortage protection circuit 3, an overvoltage protection circuit 4, a constant current circuit 5 and an intelligent temperature control circuit, wherein the MCU1 is respectively and electrically connected with the MUC power supply circuit 2, the anti-power shortage protection circuit 3, the overvoltage protection circuit 4, the constant current circuit 5 and the intelligent temperature control circuit, the output ends of the constant current circuit 5 and the intelligent temperature control circuit are respectively connected with the lamp body, the input end of the MCU power supply circuit 2 is connected with the ACC wires, and the positive end and the negative end of the storage battery are respectively connected with the input ends of the anti-power shortage protection circuit 3 and the overvoltage protection circuit 4.

Because the lamp body (namely the LED spotlight) of the existing motorcycle has the defects as mentioned in the background art, the embodiment mainly adopts the anti-power shortage protection circuit 3, the overvoltage protection circuit 4 and the intelligent temperature control circuit, is used for improving the energy conservation, safety and adjustable use of the LED spotlight, meets the use requirement of the LED spotlight, and especially meets the requirement of the motorcycle for using the LED spotlight when driving at night.

The overvoltage protection circuit 4 comprises a resistor R19, a triode Q6, a MOS tube Q8 and a voltage stabilizing diode D15, wherein two ends of the resistor R19 are respectively connected with the triode Q6 and the MOS tube Q8, the other end of the triode Q6 is connected with the MOS tube Q8, when the voltage of the overvoltage protection circuit 4 is input to the MOS tube Q8 through the voltage stabilizing diode D15, if the third voltage does not exceed the voltage stabilizing value of the voltage stabilizing diode D15, the input third voltage is normal, the MOS tube Q8 is conducted, the LED spotlight of the motorcycle is normally started, if the third voltage exceeds the voltage stabilizing value (for example, 20V) of the voltage stabilizing diode D15, the MOS tube Q8 is turned off, the effect of automatic protection is achieved, and the burnout of the LED spotlight is avoided. For example, the power supply of a motorcycle is generally 12V, the working voltage of an LED spotlight is 12-24V, the battery of an electric vehicle is generally more than 48V, and if the LED spotlight is directly connected to a 48V circuit by mistake when the LED spotlight is installed, the LED spotlight burns out.

The power shortage prevention protection circuit 3 comprises R1 and R2, when the voltage input into the power shortage prevention protection circuit 3 enters the MUC1 after being divided by the R1 and the R2, a first voltage value is output through the MCU1, and when the first voltage value exceeds a first preset upper limit voltage value, the MCU1 controls a constant current circuit to output a first current to a lamp body; when the first voltage value does not exceed a first preset lower limit voltage value, the MCU1 controls the constant current circuit 5 to output a second current to the lamp body, wherein the first current is greater than the second current.

For example, in this embodiment, the battery of the motorcycle supplies voltage to the LED spotlight, the voltage is divided by the resistors R1 and R2 and then input to pin 10 of U1, and the ADC analog-to-digital converter inside U1 converts the voltage to obtain the first voltage value. When the first voltage value exceeds a first preset upper limit voltage value, the 9 pin output of U1 is at a high level, and the constant current circuit 5 outputs normal current to the LED spotlight to work, namely, outputs first current; when the first voltage value does not exceed a first preset lower limit voltage value, the 9 pins of U1 output PWM signals which are changed from high level to duty ratio of 20%, the PWM signals regulate the LED spotlight through the constant current circuit 5, the current output by the constant current circuit is 20% of normal power, the LED spotlight works, namely, a second current is output, meanwhile, a key and an indicator lamp 6 are arranged on the motorcycle, the MCU is electrically connected with the key and the indicator lamp 6, and the indicator lamp 6 flashes rapidly to remind a user.

PWM is the English abbreviation of pulse width modulation, the Pulse Width Modulation (PWM) switch type voltage stabilizing circuit is under the condition that the output frequency of the control circuit is unchanged, the duty ratio of the PWM is adjusted through voltage feedback, so that the purpose of stabilizing output voltage is achieved, the ratio of the high level time to the period of the square wave is called the duty ratio, for example, the duty ratio of the PWM wave with the high level of 1 second and the low level of 1 second is 50%.

The intelligent temperature control circuit comprises a resistor R10, when the voltage input into the intelligent temperature control circuit enters the MUC1 after being divided by the R10, a second voltage value is output through the MCU1, and when the second voltage value exceeds a second preset upper limit voltage value, the MCU1 controls the constant current circuit 5 to output a third current to the lamp beads; when the second voltage value does not exceed a second preset lower limit voltage value, the MUC1 controls the constant current circuit 5 to output a fourth current to the lamp body, wherein the third current is larger than the fourth current.

For example, in this embodiment, the voltage is divided by the resistor R10 and then input to pin 13 of U1, and the ADC in U1 converts the voltage to obtain the second voltage value. When the second voltage value exceeds a second preset upper limit voltage value, the pin 9 of U1 outputs a high level, and the constant current circuit 5 outputs a normal current to the LED spotlight to work, namely a third current is output; when the second voltage value does not exceed the second preset lower limit voltage value, the pin 9 of the U1 outputs a PWM signal which is changed from high level to 50% duty ratio, the PWM signal regulates the LED spotlight through the constant current circuit 5, the current output by the constant current circuit 5 is 50% of the normal power, and the LED spotlight works, namely, a fourth current is output.

Further, the lamp body includes first LED shot-light 7 and second LED shot-light 8, first LED shot-light 7 and second LED shot-light 8 all symmetry set up in the motorcycle, intelligent temperature control circuit still includes thermistor RT1 and thermistor RT2 for detect the temperature of first LED shot-light 7 and second LED shot-light 8, be equipped with thermistor RT1 in the first LED shot-light 7, be equipped with thermistor RT2 in the second LED shot-light 8, thermistor RT1 and thermistor RT2 parallel connection, wherein, the one end ground after the parallel connection, constant current circuit 5 includes first constant current IC and second constant current IC, first LED shot-light 7 is connected with first constant current IC and intelligent temperature control circuit's output, second LED shot-light 8 is connected with second constant current IC and intelligent temperature control circuit's output. The constant current circuit 5 is similar to the constant current circuit of the LED spotlight used in the existing motorcycle, and will not be repeated here.

Of course, in this embodiment, the LED spotlight circuit is configured to be installed in the power supply box, and is connected with the lamp body, the anode and the cathode of the storage battery, the ACC line, the key, the switch and the indicator lamp 6 through the lead wire, so as to form a set of motorcycle LED spotlight with multiple protection functions.

In summary, the motorcycle LED spotlight control circuit provided by the utility model has the advantages that the protection and power shortage protection circuit 3 is additionally arranged, so that most of the generated power of the magneto of the motorcycle is used for charging the storage battery, saving energy and electricity, ensuring that the vehicle can be normally started after being stopped, controlling the input voltage through the overvoltage protection circuit 4 to avoid burning out the lamp body, and controlling the temperature of the lamp body through the intelligent temperature control circuit, and ensuring that the lamp body and the risk of scalding are not burnt out.

The technical principle of the present utility model has been described above in connection with specific embodiments, but is only the preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. Other embodiments of the utility model will occur to those skilled in the art without the exercise of inventive effort and are intended to fall within the scope of the utility model.

Claims

1. The utility model provides a motorcycle LED shot-light control circuit, includes lamp body, ACC line and the battery that sets up on the motorcycle, its characterized in that still includes MCU, MUC power supply circuit, prevents deficiency of power protection circuit, overvoltage protection circuit, constant current circuit and intelligent temperature control circuit, MCU is connected with MUC power supply circuit, prevents deficiency of power protection circuit, overvoltage protection circuit, constant current circuit and intelligent temperature control circuit electricity respectively, constant current circuit and intelligent temperature control circuit's output is connected with the lamp body respectively, MCU power supply circuit's input is connected with the ACC line, the positive and negative end of battery is connected with the input of preventing deficiency of power protection circuit, overvoltage protection circuit respectively.

2. The motorcycle LED spotlight control circuit according to claim 1, wherein the overvoltage protection circuit comprises a resistor R19, a triode Q6, a MOS transistor Q8 and a zener diode D15, two ends of the resistor R19 are respectively connected with the triode Q6 and the MOS transistor Q8, the other end of the triode Q6 is connected with the MOS transistor Q8, when the voltage input into the overvoltage protection circuit is input into the MOS transistor Q8 through the zener diode D15, the MOS transistor Q8 is turned on when the third voltage does not exceed the zener value of the zener diode D15, and the MOS transistor Q8 is turned off when the third voltage exceeds the zener value of the zener diode D15.

3. The LED spotlight control circuit of claim 1, wherein the power-fail-safe protection circuit comprises R1 and R2, and wherein when the voltage input to the power-fail-safe protection circuit is divided by R1 and R2, the voltage enters the MUC and the first voltage value is output by the MCU.

4. The LED spotlight control circuit of claim 3, wherein the MCU controls the constant current circuit to output a first current to the lamp body when the first voltage value exceeds a first preset upper limit voltage value; when the first voltage value does not exceed a first preset lower limit voltage value, the MCU controls the constant current circuit to output a second current to the lamp body, wherein the first current is larger than the second current.

5. The LED spotlight control circuit of claim 1, wherein the intelligent temperature control circuit comprises a resistor R10, and the voltage input to the intelligent temperature control circuit is divided by R10 and then enters the MUC, and the MCU outputs a second voltage value.

6. The motorcycle LED spotlight control circuit according to claim 5, wherein the MCU controls the constant current circuit to output a third current to the spotlight bead when the second voltage value exceeds a second preset upper limit voltage value; and when the second voltage value does not exceed a second preset lower limit voltage value, the MUC controls the constant current circuit to output a fourth current to the lamp body, wherein the third current is larger than the fourth current.

7. The LED spotlight control circuit of claim 1, further comprising a key and an indicator light, wherein the key and the indicator light are both disposed on the motorcycle, and the MCU is electrically connected to the key and the indicator light.

8. The LED spotlight control circuit of any of claims 1-7, wherein the light body comprises a first LED spotlight and a second LED spotlight, both of which are symmetrically arranged on the motorcycle.

9. The motorcycle LED spotlight control circuit according to claim 8, wherein the intelligent temperature control circuit further comprises a thermistor RT1 and a thermistor RT2, wherein the thermistor RT1 is arranged in the first LED spotlight, the thermistor RT2 is arranged in the second LED spotlight, the thermistor RT1 is connected with the thermistor RT2 in parallel, and one end of the parallel connection is grounded.

10. The motorcycle LED spotlight control circuit of claim 9, wherein the constant current circuit comprises a first constant current IC and a second constant current IC, the first LED spotlight is connected to the output of the first constant current IC and the intelligent temperature control circuit, and the second LED spotlight is connected to the output of the second constant current IC and the intelligent temperature control circuit.