CN208241942U - A kind of big lamp drive circuit of motorcycle LED - Google Patents

Abstract

The utility model provides a kind of big lamp drive circuit of motorcycle LED, including diode D1 and D2, capacitor C1~C3, resistance R1~R4, constant-current driven chip U1 and inductance L1, the anode connection supply voltage of diode D1, the cathode of diode D2, one end of capacitor C1 and one end of resistance R1 and R2 are connect with the cathode of diode D1, positive output end of the cathode of diode D1 as driving circuit, the other end of resistance R1 and R2 are connect with the 8th and 2 feet of one end of capacitor C2 and constant-current driven chip U1, the other end of capacitor C1 and C2 are grounded, the anode of diode D2 is connect with the 9th and 4 feet of one end of inductance L1 and constant-current driven chip U1, negative output terminal of the other end of inductance L1 as driving circuit, one end of resistance R3 and R4 parallel connection and perseverance Stream driving chip U1's the 5th connects with 6 feet, resistance R3 and the other end of R4 parallel connection, constant-current driven chip U1 the 1st connect capacitor C3 with 3 feet and the 7th foot after be grounded.It is general that the application can allow motorcycle LED headlight to become alterating and direct current.

Description

A kind of big lamp drive circuit of motorcycle LED

Technical field

The utility model relates to technical field of motorcycles, and in particular to a kind of big lamp drive circuit of motorcycle LED.

Background technique

Motorcycle headlight is the traffic lights mainly to play a role in lighting for guarantee safe driving and before being mounted on motorcycle, main Wanting purposes is the road and object before mobilite, it is ensured that traffic safety.Traditional motorcycle front lamp generally uses traditional halogen Lamp or xenon lamp, the power of general halogen lamp are 55W, and the power of xenon lamp is 35W, and consumption energy consumption is big；Secondly, traditional The utilization efficiency of car light is lower, although the common halogen lamp power of power ratio of xenon lamp consumption reduces, light utilizes effect Rate improves, but the service life of xenon lamp is shorter, generally the time of half a year to 1 year or so.And LED light source has volume It is small, power consumption is low, long service life, high brightness, low in calories, environmentally friendly and sturdy and durable advantage, therefore lamps and lanterns on motorcycle Gradually replaced by LED light.But the utility model inventor has found that existing motorcycle LED headlight is most of It being operated alone for AC or DC electricity, i.e., most of existing motorcycle LED headlight is only applicable to the use of AC or DC electricity, thus Seriously limit the use scope and ease of use of motorcycle LED headlight.

Utility model content

It is largely that AC or DC electricity is operated alone for existing motorcycle LED headlight, i.e., most of existing motorcycle LED headlight is only applicable to the use of AC or DC electricity, thus seriously limits the use scope of motorcycle LED headlight and use just The technical issues of benefit, the utility model provide a kind of big lamp drive circuit of motorcycle LED, which can allow motorcycle LED headlight becomes that alterating and direct current is general, greatly promotes the use scope and ease of use of motorcycle LED headlight.

In order to solve the above-mentioned technical problem, the utility model uses the following technical solution:

A kind of big lamp drive circuit of motorcycle LED, including diode D1 and D2, capacitor C1~C3, resistance R1~R4, constant current Driving chip U1 and inductance L1；Wherein, the anode connection supply voltage of the diode D1, cathode, the electricity of the diode D2 One end of one end and resistance R1 and R2 for holding C1 is connect with the cathode of diode D1, and the cathode of the diode D1 is as driving The 8th foot of the positive output end of circuit, the other end of the resistance R1 and R2 and one end of capacitor C2 and constant-current driven chip U1 and The connection of 2nd foot, the other end ground connection of the capacitor C1 and C2, anode and one end of inductance L1 and constant current of the diode D2 are driven The 9th foot of dynamic chip U1 and the connection of the 4th foot, and negative output terminal of the other end of the inductance L1 as driving circuit, the electricity Resistance R3 and one end of R4 parallel connection are connect with the 5th foot of constant-current driven chip U1 and the 6th foot, the resistance R3 and R4 parallel connection it is another The 1st foot and the 3rd foot of end and constant-current driven chip U1 are grounded, and the 7th foot of the constant-current driven chip U1 is connect with capacitor C3 After be grounded.

Further, the constant-current driven chip U1 uses the constant current master chip of model SL9003.

Compared with prior art, in the big lamp drive circuit of motorcycle LED provided by the utility model, by diode D1 into Row one-way conduction, and halfwave rectifier is formed in exchange, capacitor C1 is filtered the direct current after rectification, and diode D2, electricity Hold the peripheral circuit that C2 and C3 and resistance R1~R4 constitutes constant-current driven chip U1, inductance L1 drives shape to constant-current driven chip U1 At constant-current supply be filtered, to export stable voltage and current.Therefore, motorcycle LED headlight provided by the present application drives Dynamic circuit, motorcycle LED headlight can be allowed to become, and alterating and direct current is general, greatly promote motorcycle LED headlight use scope and Ease of use, in addition to for motorcycle headlight, it may also be used for automobile and battery truck headlight, and for receiving the defeated of supply voltage Enter that range is wider, specifically can receive the voltage of electricity input pressure such as 48V, 60V and 72V specification of 12~80V；In addition, this driving is electric Road is more energy saving, and the headlight brightness of driving is stronger.

Detailed description of the invention

Fig. 1 is motorcycle LED headlight driving circuit structure schematic diagram provided by the utility model.

Specific embodiment

In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under Face combines and is specifically illustrating, and the utility model is further described.

In the description of the present invention, it should be understood that term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness The side of the instructions such as degree ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description the utility model and simplification is retouched It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it should not be understood as limiting the present invention.In the description of the present invention, unless otherwise indicated, " multiple " contain Justice is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Please refer to shown in Fig. 1, the utility model provides a kind of big lamp drive circuit of motorcycle LED, including diode D1 and D2, capacitor C1~C3, resistance R1~R4, constant-current driven chip U1 and inductance L1；Wherein, the anode connection electricity of the diode D1 Source voltage VCCY, one end of the cathode of the diode D2, one end of capacitor C1 and resistance R1 and R2 and the cathode of diode D1 Connection, and positive output end VCCA of the cathode of the diode D1 as driving circuit, the other end of the resistance R1 and R2 and One end of capacitor C2 is connected with the 8th foot of constant-current driven chip U1 and the 2nd foot, the other end ground connection of the capacitor C1 and C2, institute The anode for stating diode D2 is connect with the 9th foot and the 4th foot of one end of inductance L1 and constant-current driven chip U1, and the inductance L1 The other end as the negative output terminal GNDA, the resistance R3 of driving circuit and one end of R4 parallel connection and constant-current driven chip U1 5th foot and the connection of the 6th foot, the 1st foot and the 3rd foot of the other end and constant-current driven chip U1 of the resistance R3 and R4 parallel connection connect Ground, the 7th foot of the constant-current driven chip U1 are grounded after connecting with capacitor C3.Wherein, the positive output end of the driving circuit and Negative output terminal is adapted to the positive and negative anodes of LED headlight.

Compared with prior art, in the big lamp drive circuit of motorcycle LED provided by the utility model, by diode D1 into Row one-way conduction, and halfwave rectifier is formed in exchange, capacitor C1 is filtered the direct current after rectification, and diode D2, electricity Hold the peripheral circuit that C2 and C3 and resistance R1~R4 constitutes constant-current driven chip U1, inductance L1 drives shape to constant-current driven chip U1 At constant-current supply be filtered, to export stable voltage and current.Therefore, motorcycle LED headlight provided by the present application drives Dynamic circuit, motorcycle LED headlight can be allowed to become, and alterating and direct current is general, greatly promote motorcycle LED headlight use scope and Ease of use, in addition to for motorcycle headlight, it may also be used for automobile and battery truck headlight, and for receiving the defeated of supply voltage Enter that range is wider, specifically can receive the voltage of electricity input pressure such as 48V, 60V and 72V specification of 12~80V, export the electricity of 9~11V The electric current of pressure and 1A；In addition, this driving circuit is more energy saving, the headlight brightness of driving is stronger.

As specific embodiment, the constant-current driven chip U1 uses the high-conversion rate constant current main core of model SL9003 Thus the alterating and direct current of input can be converted into being suitble to the DC power supply and constant current output of LED, effectively improve motorcycle by piece The use scope and service life of LED headlight.Certainly, high-conversion rate constant current master chip of the those skilled in the art in aforementioned model On the basis of, it can also be using other high-conversion rate constant current master chips, as long as can be realized direct current conversion and constant current output i.e. It can.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the scope of the claims of the utility model.

Claims (2)

1. a kind of big lamp drive circuit of motorcycle LED, which is characterized in that including diode D1 and D2, capacitor C1~C3, resistance R1 ~R4, constant-current driven chip U1 and inductance L1；Wherein, the anode connection supply voltage of the diode D1, the diode D2 Cathode, one end of capacitor C1 and one end of resistance R1 and R2 connect with the cathode of diode D1, and the diode D1's is negative Positive output end of the pole as driving circuit, the other end of the resistance R1 and R2 and one end of capacitor C2 and constant-current driven chip U1 The 8th foot and the connection of the 2nd foot, the other end ground connection of the capacitor C1 and C2, the anode and the one of inductance L1 of the diode D2 End is connected with the 9th foot of constant-current driven chip U1 and the 4th foot, and negative output of the other end of the inductance L1 as driving circuit One end of end, the resistance R3 and R4 parallel connection is connect with the 5th foot of constant-current driven chip U1 and the 6th foot, the resistance R3 and R4 The 1st foot and the 3rd foot of the in parallel other end and constant-current driven chip U1 are grounded, the 7th foot of the constant-current driven chip U1 with It is grounded after capacitor C3 connection.

2. the big lamp drive circuit of motorcycle LED according to claim 1, which is characterized in that the constant-current driven chip U1 Using the constant current master chip of model SL9003.