Integrated rectification voltage stabilizer for automatically controlling constant-current power supply of LED headlamp

Abstract

The utility model discloses a rectification voltage stabilizer integrating automatic control LED headlamp constant current power supply, comprising a housing and a circuit board arranged in the housing, the circuit board is integrated with a rectification loop, a voltage stabilization control loop and a voltage sampling loop, and the circuit board is also integrated with a magneto rotating speed sampling loop, a high beam switch loop and a constant current driving loop; the shell is further provided with a low beam lamp wiring terminal and a high beam lamp wiring terminal. The magneto rotating speed sampling loop is connected with the high beam switch loop; the high beam switch loop is connected with the constant current driving loop; the constant current driving loop comprises a low beam driving loop and a high beam driving loop, the high beam driving loop is connected with the output end of the high beam switch loop, and the driving output end of the high beam driving loop is connected with a high beam lamp wiring terminal. According to the utility model, the electronic devices of the LED headlamp constant current driving loop are integrated in the rectification voltage stabilizer, so that the size of the lamp assembly can be effectively reduced, the later maintenance is facilitated, and the use cost and the maintenance cost are lower.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifier voltage stabilizer technical field especially relates to a rectifier voltage stabilizer of integrated automatic control LED headlamp constant current power supply. BACKGROUND

[0002] Motorcycle as the widely used traffic tool, the popular rate is very high, in recent years also widely uses LED lamps and lanterns. The motorcycle headlamp contains low beam and high beam two parts, the current LED headlamp all adopts mechanical switch to control the low beam and high beam in the lamps and lanterns, and the switch opens the lamps and lanterns and ignites work. But along with the change of people's demand, more and more users require high beam to need when the vehicle engine runs, open high beam switch to ignite work.

[0003] The motorcycle LED headlamp on the market at present integrates the LED lamp pearl part for emitting light and the constant current power module part for providing LED lamp pearl. And the constant current power module circuit needs to design various individual protection circuits and constant current drive circuits, and the circuit board for the installation and circuit connection of parts in the circuit, and the parts and circuit board form an assembly after welding. This makes the lamp assembly need to specially design the space for installing power module assembly, makes the lamp specific volume big, the lamp internal structure is complicated, the design difficulty is bigger, and when only LED lamp pearl is damaged in long-term use, the power module assembly also needs to be replaced, leading to high maintenance cost. UTILITY MODEL CONTENT

[0004] In view of the above-mentioned deficiencies of prior art, the utility model aims at solving the problems of complex control structure of existing motorcycle LED headlamp, large lamp specific volume, high maintenance cost after lamp pearl damage, and provides a rectifier voltage stabilizer of integrated automatic control LED headlamp constant current power supply, integrates the electronic devices of LED headlamp constant current drive circuit in rectifier voltage stabilizer, can effectively reduce the volume of lamps and lanterns assembly, at the same time, it is convenient to maintain later, and the use and maintenance are lower.

[0005] In order to solve the above technical problems, the utility model adopts the technical scheme, which is as follows: a rectifier voltage stabilizer of integrated automatic control LED headlamp constant current power supply, including shell and circuit board arranged in the shell, the circuit board is integrated with rectification loop, voltage stabilizing control loop and voltage sampling loop, the shell is equipped with U phase connection terminal, V phase connection terminal and W phase connection terminal for being connected with magneto, battery connection terminal for being connected with battery and grounding terminal for grounding, wherein, the rectification loop is connected with U phase connection terminal, V phase connection terminal and W phase connection terminal, characterized by: the circuit board is also integrated with magneto rotating speed sampling loop, high beam switch loop and constant current drive loop, the shell is also equipped with low beam lamp connection terminal and high beam lamp connection terminal, the sampling end of magneto rotating speed sampling loop is connected with U phase connection terminal, V phase connection terminal and W phase connection terminal, and the output end is connected with high beam switch loop, the high beam switch loop is connected with voltage stabilizing control loop in parallel, the input end is connected with magneto rotating speed sampling loop, and the output end is connected with constant current drive loop, the constant current drive loop includes low beam drive loop and high beam drive loop, wherein, the low beam drive loop is connected with voltage stabilizing control loop in parallel, the driving output end is connected with low beam lamp connection terminal, the positive pole of high beam drive loop is connected with the output end of high beam switch loop, the negative pole is connected with the negative pole of voltage stabilizing control loop, and the driving output end is connected with high beam lamp connection terminal.

[0006] Further, the magneto rotating speed sampling loop includes diode D4, D5, D6 and triode Q3, the positive pole of diode D4, D5, D6 is connected with U phase connection terminal, V phase connection terminal and W phase connection terminal, the negative pole is connected with the base of triode Q3 after passing through resistance R15, the emitter of triode Q3 is connected with grounding terminal, and the collector is connected with high beam switch loop, and the capacitor C7 and resistance R18 are arranged in parallel between the base of triode Q3 and grounding terminal.

[0007] Further, the high beam drive loop includes voltage stabilizing diode Z4 and MOS tube Q4, the collector of triode Q3 is connected with the gate of MOS tube Q4 after passing through resistance R19, the drain of MOS tube Q4 is connected with battery connection terminal, and the source is connected with high beam drive loop.

[0008] Compared with the prior art, the utility model has the following advantages:

[0009] 1, the rectifier voltage stabilizer is integrated with constant current drive circuit, so that the LED headlamp can be automatically controlled, the low beam lamp can be automatically turned on when the engine is running, and when the engine rotating speed reaches a certain value, the high beam lamp can be turned on through the external switch, so that the user's demand is more suitable.

[0010] 2. The LED headlamp (including high beam and low beam) constant current drive circuit is integrated in the rectifier stabilizer, various separate protection circuits in the LED headlamp constant current power module circuit are reduced, the constant current power module assembly in the lamp is removed, the lamp appearance size is miniaturized, and the internal structure is simple; thereby the lamp design difficulty can be reduced, the lamp (vehicle) cost is reduced, resource waste caused by protection circuit setting is reduced, and the maintenance cost when the lamp is not bright in the later period can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a circuit principle diagram of the utility model.

[0012] Figure 2 It is a circuit principle diagram of the magnetoelectric machine rotating speed sampling circuit and the high beam switch circuit.

[0013] Figure 3 It is a side view of the shell.

[0014] Figure 4 It is a layout structure schematic diagram of the circuit board.

[0015] In the drawing: 1 - shell, 2 - circuit board, 3 - U-phase connection terminal, 4 - V-phase connection terminal, 5 - W-phase connection terminal, 6 - battery connection terminal, 7 - ground terminal, 8 - low beam connection terminal, 9 - high beam connection terminal. DETAILED DESCRIPTION

[0016] The utility model will be further described below in combination with the drawings and examples.

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0018] It should be noted that similar reference numerals and letters refer to like items in the accompanying drawings, and once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. In the description of the application, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed during use, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", and the like do not mean that the parts must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the application, it also needs to be explained that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0019] Embodiment: see Figures 1 to 4 A rectifier voltage stabilizer integrated with automatic control LED headlamp constant current power supply, comprising a shell 1 and a circuit board 2 arranged in the shell 1, and the circuit board 2 is integrated with a rectifier circuit, a voltage stabilizing control circuit and a voltage sampling circuit, wherein the rectifier circuit, the voltage stabilizing control circuit and the voltage sampling circuit are all mature existing technologies. A U-phase connection terminal 3, a V-phase connection terminal 4 and a W-phase connection terminal 5 for connecting with a magneto are arranged on the shell 1, a battery connection terminal 6 for connecting with a battery and a ground terminal 7 for grounding are arranged on the shell 1, and the rectifier circuit is connected with the U-phase connection terminal 3, the V-phase connection terminal 4 and the W-phase connection terminal 5.

[0020] The circuit board 2 further integrates a magneto rotating speed sampling circuit, a high beam switch circuit and a constant current drive circuit. The housing 1 further provides a low beam lamp terminal 8 and a high beam lamp terminal 9. The sampling end of the magneto rotating speed sampling circuit is connected with the U-phase terminal 3, the V-phase terminal 4 and the W-phase terminal 5, and the output end is connected with the high beam switch circuit. The high beam switch circuit is connected in parallel with the voltage stabilizing control circuit, the input end is connected with the magneto rotating speed sampling circuit, and the output end is connected with the constant current drive circuit. The constant current drive circuit includes a low beam drive circuit and a high beam drive circuit, and the low beam drive circuit and the high beam drive circuit are both mature prior art. The low beam drive circuit is connected in parallel with the voltage stabilizing control circuit, and the driving output end is connected with the low beam lamp terminal 8. The positive pole of the high beam drive circuit is connected with the output end of the high beam switch circuit, the negative pole is connected with the negative pole of the voltage stabilizing control circuit, and the driving output end is connected with the high beam lamp terminal 9.

[0021] In implementation, the output ends U, V and W of the magneto are connected with the input ends of the (bridge type) rectifier circuit, the input end A and the ground end B of the voltage sampling circuit are connected in parallel with the + and - ends of the rectifier circuit respectively. The voltage set point C end in the voltage sampling circuit is connected with the input end D of the voltage stabilizing control circuit, and the ground end E is connected with the - end of the bridge type rectifier circuit. The output ends U, V and W of the magneto are connected with the rotating speed collection end F of the magneto rotating speed sampling circuit, and the current output ends G and H of the constant current drive circuit are connected with the high beam lamp terminal 9 and the low beam lamp terminal 8 respectively.

[0022] In operation: when the engine is running, the magneto generates electricity, which is rectified by the (bridge type) rectifier circuit to charge the storage battery and supply power to other loads; when the voltage collected by the voltage sampling circuit reaches the set value, the rectifier circuit stops charging to prevent overcharging. At the same time, when the engine is running, the low beam lamp is automatically turned on by supplying power to the low beam drive circuit in the constant current drive circuit through the voltage stabilizing control circuit; when the rotating speed of the magneto rises to a certain rotating speed (usually, the rotating speed is greater than the idling speed), the corresponding voltage is collected by the rotating speed sampling circuit, and when the voltage reaches the set value, the high beam switch circuit starts to work and supplies power to the high beam drive circuit in the constant current drive circuit, so that the LED high beam lamp can be controlled to be turned on by an external switch.

[0023] As an embodiment, referring to Figure 2 , the magneto rotating speed sampling circuit includes diodes D4, D5 and D6 and a triode Q3. The positive poles of the diodes D4, D5 and D6 are connected with the U-phase terminal 3, the V-phase terminal 4 and the W-phase terminal 5 respectively, and the negative poles are connected with the base of the triode Q3 through the resistor R15. The emitter of the triode Q3 is connected with the ground terminal 7, and the collector is connected with the high beam switch circuit. The capacitor C7 and the resistor R18 are further connected in parallel between the base of the triode Q3 and the ground terminal 7.

[0024] The high beam driving circuit comprises a Zener diode Z4 and a MOS tube Q4, the collector of the triode Q3 is connected with the gate of the MOS tube Q4 through a resistor R19, the drain of the MOS tube Q4 is connected with a battery terminal 6, and the source of the MOS tube Q4 is connected with the high beam driving circuit.

[0025] When the motorcycle is started, the alternating current generated by the rotation of the magneto passes through D4, D5, D6 and R15 to charge C7; when the charging voltage reaches a certain value (about 0.6V), Q3 is turned on; at this time, the battery, R20, R19, Q3 and the ground form a path, Q4 is turned on, and the high beam driving circuit in the constant current driving circuit is provided with a power supply, the high beam driving circuit starts to work, and a constant current is provided for the LED high beam lamp, and the LED high beam lamp is lit.

[0026] When the motorcycle is turned off, the magneto stops rotating, the rectifier circuit stops working, Q3 and Q4 are both in the off state, the entire constant current driving circuit is disconnected from the power supply, the constant current driving circuit stops working, and the LED headlamp is naturally extinguished.

[0027] The scheme integrates the constant current driving circuit of the LED headlamp (including the high beam lamp and the low beam lamp) in the rectifier stabilizer, reduces various separate protection circuits in the LED headlamp constant current power module circuit, removes the constant current power module assembly in the lamp, miniaturizes the lamp appearance size, and simplifies the internal structure; thereby the design difficulty of the lamp can be reduced, the cost of the lamp (i.e. the vehicle) is reduced, resource waste caused by the protection circuit setting is reduced, and the maintenance cost of the lamp when the lamp is not lit in the later period can be effectively reduced.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the technical solutions, and those of ordinary skill in the art should understand that those who modify or equivalently replace the technical solutions of the present application without departing from the purpose and scope of the present application should be covered in the scope of the claims of the present application.

Claims

1. An integrated automatic control LED headlamp constant current power supply rectifier voltage stabilizer, comprising a shell and a circuit board arranged in the shell, the circuit board is integrated with a rectifier circuit, a voltage stabilizing control circuit and a voltage sampling circuit, U-phase, V-phase and W-phase connection terminals for connecting with a magneto are arranged on the shell, a battery connection terminal for connecting with a battery and a ground terminal for grounding are arranged on the shell, wherein, The rectifier circuit is connected with the U-phase connection terminal, the V-phase connection terminal and the W-phase connection terminal; characterized in that: the magnetic motor rotating speed sampling circuit, the high beam switch circuit and the constant current drive circuit are further integrated on the circuit board; the low beam connection terminal and the high beam connection terminal are further arranged on the shell; the sampling end of the magnetic motor rotating speed sampling circuit is connected with the U-phase connection terminal, the V-phase connection terminal and the W-phase connection terminal, and the output end is connected with the high beam switch circuit; the high beam switch circuit is connected in parallel with the voltage stabilization control circuit, the input end is connected with the magnetic motor rotating speed sampling circuit, and the output end is connected with the constant current drive circuit; the constant current drive circuit comprises the low beam drive circuit and the high beam drive circuit, wherein the low beam drive circuit is connected in parallel with the voltage stabilization control circuit, the driving output end is connected with the low beam connection terminal, the positive pole of the high beam drive circuit is connected with the output end of the high beam switch circuit, the negative pole is connected with the negative pole of the voltage stabilization control circuit, and the driving output end is connected with the high beam connection terminal.

2. The integrated automatic control LED headlamp constant current power supply rectifier voltage regulator of claim 1, wherein: The magnetic motor rotating speed sampling circuit comprises diodes D4, D5 and D6 and a triode Q3; the positive poles of the diodes D4, D5 and D6 are connected with the U-phase connection terminal, the V-phase connection terminal and the W-phase connection terminal, the negative poles are connected with the base of the triode Q3 through the resistor R15, the emitter of the triode Q3 is connected with the ground terminal, and the collector is connected with the high beam switch circuit; the capacitor C7 and the resistor R18 are further arranged in parallel between the base of the triode Q3 and the ground terminal.

3. The rectifier voltage regulator for integrated automatic control LED headlamp constant current power supply according to claim 2, characterized in that: The high beam drive circuit comprises a voltage stabilization diode Z4 and a MOS tube Q4, the collector of the triode Q3 is connected with the gate of the MOS tube Q4 through the resistor R19, the drain of the MOS tube Q4 is connected with the battery connection terminal, and the source is connected with the high beam drive circuit.

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