CN219436868U - High-power DC converter suitable for expanding and increasing USB charging output of electric motorcycle - Google Patents

Abstract

The utility model discloses a high-power DC converter suitable for expanding and increasing USB charging output of an electric motorcycle, and relates to the technical field of vehicle-mounted DC converters. The utility model comprises a main power output loop, a USB output circuit and an electric door lock switch, wherein the main power output loop and the USB output circuit are both BUCK circuits, the output voltage of the main power output loop is 12V, and the output voltage of the USB output circuit is 5V; the input end of the USB output circuit is the output end of the main power output loop; the electric door lock switch is a starting switch of the main power output loop. The utility model adopts the full-integrated chip, thereby being convenient for the consistency and the stability of batch manufacturing and ensuring the quality; and 5V output required by one path of USB is added, so that the vehicle-mounted charging requirement of the client mobile phone is met.

Description

High-power DC converter suitable for expanding and increasing USB charging output of electric motorcycle

Technical Field

The utility model belongs to the technical field of vehicle-mounted DC converters, and particularly relates to a high-power DC converter suitable for expanding and increasing USB charging output of an electric motorcycle.

Background

Because the on-vehicle DC converter in market has high reject ratio and does not have USB output function, customers need to be additionally provided with USB chargers, thereby increasing the use cost, especially for small motor vehicles such as electric motorcycles. Therefore, the utility model is convenient for consistency and stability of batch manufacturing by adopting the fully integrated chip, and the quality is ensured; and 5V output required by one path of USB is added, so that the vehicle-mounted charging requirement of the client mobile phone is met.

Disclosure of Invention

The utility model aims to provide a high-power DC converter suitable for expanding and increasing USB charging output of an electric motorcycle, and solves the problems that the existing vehicle-mounted DC converter is high in reject ratio, does not have a USB output function, and a client needs to be additionally provided with a USB charger to increase the use cost.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a high-power DC converter suitable for expanding and increasing USB charging output of an electric motorcycle, which comprises a main power output loop, a USB output circuit and a switch of a switch lock, wherein the main power output loop and the USB output circuit are both BUCK circuits, the output voltage of the main power output loop is 12V, and the output voltage of the USB output circuit is 5V; the input end of the USB output circuit is the output end of the main power output loop; the electric door lock switch is a starting switch of the main power output loop;

the main power output loop comprises an integrated chip U1, a relay J1, an inductor L3, a filter capacitor C2, a MOS tube Q2, a freewheel diode D4 and a filter capacitor C6; the relay J1 is an input port of a main power output loop, the integrated chip U1 is used for controlling a start switch of the MOS tube Q2, and the inductor L3 is used for storing energy of the main power output loop; the output port of the relay J1 comprises a high-voltage output VIN end, a KEY end, a ground wire GND end and a low-voltage input VOUT end, wherein the high-voltage output VIN end is connected with an inductor L3 in series, potentiometers W1 are connected at two ends of the inductor L3 in parallel, and equivalent output VIN1 ends of the high-voltage output VIN end and the low-voltage output VIN end are connected with a MOS tube Q2 in series; the MOS tube Q2 is connected with the inductor L1 in series through the resistor R8, and the inductor L1 flows back to the relay J1 through the low-voltage input VOUT end; the equivalent output VIN1 end is connected with a capacitor C1 in series, meanwhile, the equivalent output VIN1 end is also connected with a filter capacitor C2, and the equivalent output VIN1 end is grounded through the capacitor C1 and the filter capacitor C2; the output end of the resistor R8 is connected with the flywheel diode D4 in series and grounded, wherein the resistor R12 and the capacitor C7 are connected in parallel with the two ends of the flywheel diode D4, and the resistor R12 and the capacitor C7 are connected in series; the low-voltage input VOUT end is connected with the filter capacitor C6, meanwhile, the low-voltage input VOUT end is also respectively connected with the capacitor C5 and the resistor R10 in series, and the low-voltage input VOUT end is grounded through the filter capacitor C6, the capacitor C5 and the resistor R10;

the 1 pin of the integrated chip U1 is electrically connected with the electric door lock switch, is grounded through a capacitor C10, the 2 pin is grounded through a capacitor C3, and meanwhile, the 1 pin and the 2 pin are connected through a divider resistor; the 3 pin of the integrated chip U1 is connected in series to the low-voltage input VOUT end through a resistor R14, a resistor R15 and a resistor R16 are also connected between the resistor R14 and the 3 pin, and are respectively grounded through the resistor R15 and the resistor R16, a resistor R13 and a capacitor C8 are connected in parallel at two ends of the resistor R14, and the resistor R13 is connected in series with the capacitor C8; a diode D5 is connected between the 4 pins and the 5 pins of the integrated chip U1, the input direction is from 4 pins to 5 pins, a capacitor C4 is connected between the 5 pins and the 7 pins, one end of the 6 pins is grounded, a diode D3 is connected between the 6 pins and the 7 pins, and a resistor R7 is connected between the 7 pins and the 8 pins; a resistor R9 is connected in series between the 7 pin and the resistor R8, a resistor R6 is connected in series between the 8 pin and the resistor R8, and the resistor R6 and the resistor R9 are respectively arranged at two ends of the resistor R8; a diode D2 is connected in series between the other end of the 6 pin and the MOS tube Q2, and two ends of the diode D2 are connected with a resistor R4 in parallel; a triode Q1 and a resistor R1 are connected in series between the 5-pin equivalent output VIN1 end, wherein a resistor R2 is connected in series between a base B of the triode Q1 and the resistor R1, a collector C is connected with the resistor R1, and an emitter E is connected with the 5-pin; a photodiode D1 is connected in series between the resistor R2 and the resistor R9.

Further, the USB output circuit comprises an integrated chip U4 and a USB output port CN1; a capacitor C9 is connected between the 1 pin and the 6 pin of the integrated chip U4, one end of the 2 pin is connected with a potentiometer W2 in series, the potentiometer W2 is grounded, the other end of the potentiometer W2 is connected with one end of a negative electrode 2 of the USB output port, and the other end of the negative electrode 2 is grounded; meanwhile, resistors R22, R24 and R23 are connected in series between the 3 pin and a low-voltage input VOUT end in a main power output loop; a capacitor C16 is connected between the 3 pin and the 4 pin of the integrated chip U4, and the capacitor C16 is connected in parallel with a resistor R22; a capacitor C18 is connected between the 5 pin and the 3 pin of the integrated chip U4, wherein one end of the 5 pin is connected with the low-voltage input VOUT end, and the other end of the 5 pin is connected with a diode D6 and is grounded through the diode D6; the 6 pin of the integrated chip U4 is connected with an inductor L4, wherein the inductor L4 is connected with the positive electrode 1 of the USB output port CN1, and one end of the positive electrode 1 is a 5V output VOUT end; resistors R3 and R11 are connected in series between the inductor L4 and the resistor R22, and the inductor L4 is connected with a 3 pin of the integrated chip U4 through the resistor R3; a capacitor C15 is connected in parallel with the connecting section of the resistor R3; a capacitor CH is connected in parallel between the anode 1 and the cathode 2 of the USB output port.

Further, the electric door lock switch comprises an optocoupler U2, a triode Q3 and a triode Q5, wherein resistors R18 and R21 are connected in series with the anode of the optocoupler U2 and the KEY end of the relay J1, the KEY end is used for being connected with a starting KEY of the electric motorcycle and is electrically connected with a power supply, and the cathode and the emitter are grounded; the collector of the optocoupler U2 is connected with the base B of the triode Q3, a resistor R30 is connected in parallel between the base B and the collector E of the triode Q3, one end of the emitter E of the triode Q3 is connected with the collector C of the triode Q5, and the emitter E and the collector C of the triode Q5 are both connected with the 5 pin of the integrated chip U4; a resistor R27 is connected in series between the collector C of the triode Q3 and the base B of the triode Q5, and a resistor R17 is connected in series between the emitter E of the triode Q5 and the 1 pin of the integrated chip U1.

The utility model has the following beneficial effects:

the utility model adopts the full-integrated chip, thereby being convenient for the consistency and the stability of batch manufacturing and ensuring the quality; and 5V output required by one path of USB is added, so that the vehicle-mounted charging requirement of the client mobile phone is met.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a main power output loop of a high power DC converter suitable for an electric motorcycle to expand and increase USB charging output;

FIG. 2 is a USB output circuit of the high-power DC converter suitable for expanding and increasing USB charging output of the electric motorcycle;

fig. 3 is an electric door lock switching circuit of the high-power DC converter suitable for expanding and increasing USB charging output of the electric motorcycle of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "middle," "outer," "inner," and the like indicate an orientation or a positional relationship, and are merely for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-3, the utility model discloses a high-power DC converter suitable for expanding and increasing a USB charging output of an electric motorcycle, which comprises a main power output loop, a USB output circuit and an electric door lock switch, wherein the main power output loop and the USB output circuit are both BUCK circuits, the output voltage of the main power output loop is 12V, and the output voltage of the USB output circuit is 5V; the input end of the USB output circuit is the output end of the main power output loop; the electric door lock switch is a starting switch of the main power output loop;

the main power output loop comprises an integrated chip U1, a relay J1, an inductor L3, a filter capacitor C2, a MOS tube Q2, a freewheel diode D4 and a filter capacitor C6; the relay J1 is an input port of a main power output loop, the integrated chip U1 is used for controlling a start switch of the MOS tube Q2, and the inductor L3 is used for storing energy of the main power output loop; the output port of the relay J1 comprises a high-voltage output VIN end, a KEY end, a ground wire GND end and a low-voltage input VOUT end, wherein the high-voltage output VIN end is connected with an inductor L3 in series, two ends of the inductor L3 are connected with a potentiometer W1 in parallel, and the equivalent output VIN1 ends of the high-voltage output VIN end and the inductor L3 are connected with a MOS tube Q2 in series; MOS tube Q2 is connected with inductor L1 in series through resistor R8, inductor L1 flows back to relay J1 through low-voltage input VOUT end; the equivalent output VIN1 end is connected with a capacitor C1 in series, meanwhile, the equivalent output VIN1 end is also connected with a filter capacitor C2, and the equivalent output VIN1 end is grounded through the capacitor C1 and the filter capacitor C2; the output end of the resistor R8 is connected with the ground in series with the freewheeling diode D4, wherein the resistor R12 and the capacitor C7 are connected in parallel with the two ends of the freewheeling diode D4, and the resistor R12 and the capacitor C7 are connected in series; the low-voltage input VOUT end is connected with the filter capacitor C6, meanwhile, the low-voltage input VOUT end is also respectively connected with the capacitor C5 and the resistor R10 in series, and the low-voltage input VOUT end is grounded through the filter capacitor C6, the capacitor C5 and the resistor R10;

the 1 pin of the integrated chip U1 is electrically connected with the electric door lock switch and is grounded through a capacitor C10, the 2 pin is grounded through a capacitor C3, and meanwhile, the 1 pin and the 2 pin are connected through a divider resistor; the 3 pin of the integrated chip U1 is connected in series to the low-voltage input VOUT end through a resistor R14, a resistor R15 and a resistor R16 are also connected between the resistor R14 and the 3 pin, and are respectively grounded through the resistor R15 and the resistor R16, a resistor R13 and a capacitor C8 are connected in parallel at two ends of the resistor R14, and the resistor R13 is connected in series with the capacitor C8; a diode D5 is connected between the 4 pins and the 5 pins of the integrated chip U1, the input direction is from 4 pins to 5 pins, a capacitor C4 is connected between the 5 pins and the 7 pins, one end of the 6 pins is grounded, a diode D3 is connected between the 6 pins and the 7 pins, and a resistor R7 is connected between the 7 pins and the 8 pins; a resistor R9 is connected in series between the 7 pin and the resistor R8, a resistor R6 is connected in series between the 8 pin and the resistor R8, and the resistor R6 and the resistor R9 are respectively arranged at two ends of the resistor R8; a diode D2 is connected in series between the other end of the 6 pin and the MOS tube Q2, and two ends of the diode D2 are connected with a resistor R4 in parallel; a triode Q1 and a resistor R1 are connected in series between the equivalent output VIN1 ends of the 5 pins, a resistor R2 is connected in series between a base B of the triode Q1 and the resistor R1, a collector C is connected with the resistor R1, and an emitter E is connected with the 5 pins; a photodiode D1 is connected in series between the resistor R2 and the resistor R9.

Preferably, the USB output circuit comprises an integrated chip U4 and a USB output port CN1; a capacitor C9 is connected between the 1 pin and the 6 pin of the integrated chip U4, one end of the 2 pin is connected with a potentiometer W2 in series and is grounded through the potentiometer W2, the other end of the 2 pin is connected with one end of a negative electrode 2 of the USB output port, and the other end of the negative electrode 2 is grounded; meanwhile, resistors R22, R24 and R23 are connected in series between the 3 pin and a low-voltage input VOUT end in a main power output loop; a capacitor C16 is connected between the 3 pin and the 4 pin of the integrated chip U4, and the capacitor C16 is connected with a resistor R22 in parallel; a capacitor C18 is connected between the 5 pin and the 3 pin of the integrated chip U4, wherein one end of the 5 pin is connected with the low-voltage input VOUT end, and the other end of the 5 pin is connected with a diode D6 and is grounded through the diode D6; the 6 pin of the integrated chip U4 is connected with an inductor L4, wherein the inductor L4 is connected with the positive electrode 1 of the USB output port CN1, and one end of the positive electrode 1 is a 5V output VOUT end; resistors R3 and R11 are connected in series between the inductor L4 and the resistor R22, and the inductor L4 is connected with a 3 pin of the integrated chip U4 through the resistor R3; the connecting section of the resistor R3 is connected with a capacitor C15 in parallel; a capacitor CH is connected in parallel between the anode 1 and the cathode 2 of the USB output port.

Preferably, the electric door lock switch comprises an optocoupler U2, a triode Q3 and a triode Q5, wherein resistors R18 and R21 are connected in series with the anode of the optocoupler U2 and the KEY end of the relay J1, the KEY end is used for being connected with a starting KEY of the electric motorcycle and is electrically connected with a power supply, and the cathode and the emitter are grounded; the collector of the optocoupler U2 is connected with the base B of the triode Q3, a resistor R30 is connected in parallel between the base B and the collector E of the triode Q3, one end of the emitter E of the triode Q3 is connected with the collector C of the triode Q5, and the emitter E and the collector C of the triode Q5 are both connected with the 5 pin of the integrated chip U4; a resistor R27 is connected in series between the collector C of the triode Q3 and the base B of the triode Q5, and a resistor R17 is connected in series between the emitter E of the triode Q5 and the 1 pin of the integrated chip U1.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (3)

1. High-power DC converter suitable for electric motorcycle expands increase USB and charges output, including main power output circuit, USB output circuit and electric door lock switch, its characterized in that: the main power output loop comprises an integrated chip U1, a relay J1, an inductor L3, a filter capacitor C2, a MOS tube Q2, a freewheel diode D4 and a filter capacitor C6; the output port of the relay J1 comprises a high-voltage output VIN end, a KEY end, a ground wire GND end and a low-voltage input VOUT end, wherein the high-voltage output VIN end is connected with an inductor L3 in series, potentiometers W1 are connected at two ends of the inductor L3 in parallel, and equivalent output VIN1 ends of the high-voltage output VIN end and the low-voltage output VIN end are connected with a MOS tube Q2 in series; the MOS tube Q2 is connected with the inductor L1 in series through the resistor R8, and the inductor L1 flows back to the relay J1 through the low-voltage input VOUT end; the equivalent output VIN1 end is connected with a capacitor C1 in series, meanwhile, the equivalent output VIN1 end is also connected with a filter capacitor C2, and the equivalent output VIN1 end is grounded through the capacitor C1 and the filter capacitor C2; the output end of the resistor R8 is connected with the flywheel diode D4 in series and grounded, wherein the resistor R12 and the capacitor C7 are connected in parallel with the two ends of the flywheel diode D4, and the resistor R12 and the capacitor C7 are connected in series; the low-voltage input VOUT end is connected with the filter capacitor C6, meanwhile, the low-voltage input VOUT end is also respectively connected with the capacitor C5 and the resistor R10 in series, and the low-voltage input VOUT end is grounded through the filter capacitor C6, the capacitor C5 and the resistor R10;

the 1 pin of the integrated chip U1 is electrically connected with the electric door lock switch, is grounded through a capacitor C10, the 2 pin is grounded through a capacitor C3, and meanwhile, the 1 pin and the 2 pin are connected through a divider resistor; the 3 pin of the integrated chip U1 is connected in series to the low-voltage input VOUT end through a resistor R14, a resistor R15 and a resistor R16 are also connected between the resistor R14 and the 3 pin, and are respectively grounded through the resistor R15 and the resistor R16, a resistor R13 and a capacitor C8 are connected in parallel at two ends of the resistor R14, and the resistor R13 is connected in series with the capacitor C8; a diode D5 is connected between the 4 pins and the 5 pins of the integrated chip U1, the input direction is from 4 pins to 5 pins, a capacitor C4 is connected between the 5 pins and the 7 pins, one end of the 6 pins is grounded, a diode D3 is connected between the 6 pins and the 7 pins, and a resistor R7 is connected between the 7 pins and the 8 pins; a resistor R9 is connected in series between the 7 pin and the resistor R8, a resistor R6 is connected in series between the 8 pin and the resistor R8, and the resistor R6 and the resistor R9 are respectively arranged at two ends of the resistor R8; a diode D2 is connected in series between the other end of the 6 pin and the MOS tube Q2, and two ends of the diode D2 are connected with a resistor R4 in parallel; a triode Q1 and a resistor R1 are connected in series between the 5-pin equivalent output VIN1 end, wherein a resistor R2 is connected in series between a base B of the triode Q1 and the resistor R1, a collector C is connected with the resistor R1, and an emitter E is connected with the 5-pin; a photodiode D1 is connected in series between the resistor R2 and the resistor R9.

2. The high-power DC converter for an electric motorcycle to expand and increase a USB charging output according to claim 1, wherein the USB output circuit includes an integrated chip U4 and a USB output port CN1; a capacitor C9 is connected between the 1 pin and the 6 pin of the integrated chip U4, one end of the 2 pin is connected with a potentiometer W2 in series, the potentiometer W2 is grounded, the other end of the potentiometer W2 is connected with one end of a negative electrode 2 of the USB output port, and the other end of the negative electrode 2 is grounded; meanwhile, resistors R22, R24 and R23 are connected in series between the 3 pin and a low-voltage input VOUT end in a main power output loop; a capacitor C16 is connected between the 3 pin and the 4 pin of the integrated chip U4, and the capacitor C16 is connected in parallel with a resistor R22; a capacitor C18 is connected between the 5 pin and the 3 pin of the integrated chip U4, wherein one end of the 5 pin is connected with the low-voltage input VOUT end, and the other end of the 5 pin is connected with a diode D6 and is grounded through the diode D6; the 6 pin of the integrated chip U4 is connected with an inductor L4, wherein the inductor L4 is connected with the positive electrode 1 of the USB output port CN1, and one end of the positive electrode 1 is a 5V output VOUT end; resistors R3 and R11 are connected in series between the inductor L4 and the resistor R22, and the inductor L4 is connected with a 3 pin of the integrated chip U4 through the resistor R3; a capacitor C15 is connected in parallel with the connecting section of the resistor R3; a capacitor CH is connected in parallel between the anode 1 and the cathode 2 of the USB output port.

3. The high-power DC converter suitable for expanding and increasing USB charging output of the electric motorcycle according to claim 2, wherein the electric door lock switch comprises an optocoupler U2, a triode Q3 and a triode Q5, wherein the anode of the optocoupler U2 and the KEY end of a relay J1 are connected in series with resistors R18 and R21, and the cathode and the emitter are grounded; the collector of the optocoupler U2 is connected with the base B of the triode Q3, a resistor R30 is connected in parallel between the base B and the collector E of the triode Q3, one end of the emitter E of the triode Q3 is connected with the collector C of the triode Q5, and the emitter E and the collector C of the triode Q5 are both connected with the 5 pin of the integrated chip U4; a resistor R27 is connected in series between the collector C of the triode Q3 and the base B of the triode Q5, and a resistor R17 is connected in series between the emitter E of the triode Q5 and the 1 pin of the integrated chip U1.