CN216056359U - Short-circuit protection and communication circuit for charging port of lighting equipment - Google Patents
Short-circuit protection and communication circuit for charging port of lighting equipment Download PDFInfo
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- CN216056359U CN216056359U CN202121027415.XU CN202121027415U CN216056359U CN 216056359 U CN216056359 U CN 216056359U CN 202121027415 U CN202121027415 U CN 202121027415U CN 216056359 U CN216056359 U CN 216056359U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a lighting equipment charging port short-circuit protection and communication circuit which comprises a signal sending unit and a host power supply unit, wherein the host power supply unit is fixed in the lighting equipment and connected with a charging port, a battery and an LED, and the signal sending unit is externally connected with the host power supply unit through the charging port. The host power supply unit includes: the short-circuit protection and communication receiving circuit comprises a short-circuit protection and communication receiving circuit, a first single chip microcomputer control circuit and an LED drive circuit; the short-circuit protection and communication receiving circuit is located between the charging port and the battery, and the first single-chip microcomputer control circuit is used for controlling the LED driving circuit according to signals of the short-circuit protection and communication receiving circuit.
Description
Technical Field
The utility model relates to the field of lamp charging control, in particular to a lighting equipment charging port short-circuit protection and communication circuit.
Background
The development of mobile lighting tools can be traced back to the initial stage of the development of human society, the original society. Since humanity learned to drill wood and get a fire, mobile lighting has experienced a progression from fire, oil, candles to flashlights. The mobile lighting tool has undergone countless changes, and the appearance of the mobile lighting tool is that a torch, an oil lamp, a candle, a kerosene lamp is changed to an incandescent bulb flashlight and a xenon bulb flashlight, and the mobile lighting tool is changed to an LED flashlight with a full-purpose of enamelware and the like.
Common mobile lighting equipment charges through charging mouthful direct and battery connection, and the direct mode of being connected with the battery of mouth that charges has the mouth short circuit of charging and does not have the shortcoming of protection, and the mouth that charges can't expose, can not provide the communication function.
Disclosure of Invention
The utility model aims to provide a charging port short-circuit protection and communication circuit for an open device.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a lighting equipment charging port short-circuit protection and communication circuit comprises a signal sending unit and a host power supply unit, wherein the host power supply unit is fixed in the lighting equipment and is connected with a charging port, a battery and an LED, and the signal sending unit is externally connected with the host power supply unit through the charging port;
the host power supply unit is used for power-off protection and controlling the lighting equipment according to the control signal of the signal sending unit.
Further, the host power supply unit includes: the short-circuit protection and communication receiving circuit comprises a short-circuit protection and communication receiving circuit, a first single chip microcomputer control circuit and an LED drive circuit;
the short-circuit protection and communication receiving circuit is located between the charging port and the battery, and the first single-chip microcomputer control circuit is used for controlling the LED driving circuit according to signals of the short-circuit protection and communication receiving circuit.
Further, the signal sending unit comprises a control switch, a second singlechip control circuit and a signal sending circuit;
the control switch is used for driving the second singlechip control circuit;
the second singlechip control circuit is connected with the signal sending circuit and used for sending a control signal;
and the signal transmitting circuit is connected with the short-circuit protection and communication receiving circuit through the charging port.
Furthermore, the host power supply unit and the signal sending unit are both provided with linear voltage reduction circuits which are respectively used for supplying power to the first single-chip microcomputer control circuit and the second single-chip microcomputer control circuit.
Further, the short-circuit protection and communication receiving circuit includes: the transistor comprises a first triode, a second triode, an MOS (metal oxide semiconductor) tube and a resistor;
the collector and the emitter of the first triode are connected with the charging port, the collector is grounded through a resistor,
the drain electrode of the MOS tube is connected with the emitting electrode of the first triode, and the source electrode of the MOS tube is connected with the anode of the battery;
the emitter of the second triode is connected with the source of the MOS tube, the base of the second triode is connected with the base of the first triode, and the collector of the second triode is connected with the grid of the MOS tube and is grounded with the negative electrode of the battery through a resistor;
the first triode and the second triode are both of a P type, and the MOS tube is of a P type.
Furthermore, the short-circuit protection and communication receiving circuit further comprises a diode, and the diode is respectively connected with the source electrode of the MOS tube, the first singlechip control circuit and the ground through a resistor.
Further, the signal transmission circuit includes: the base electrode of the third triode is connected with the second single-chip microcomputer control circuit, and the emitting electrode and the collector electrode of the third triode are connected with the emitting electrode and the collector electrode of the first triode through the charging port.
By applying the technical scheme of the utility model, the host power supply unit is additionally arranged between the battery of the flashlight and the charging port, so that the short-circuit protection function is realized, the control signal of an external signal sending unit can be received, the communication control effect is realized, the control device is used for controlling various wall lamps, table lamps and flashlights, and the problems that the charging port has no short-circuit protection function and no communication function in the prior art are solved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The present invention will be described in detail below with reference to the accompanying drawings so that the above advantages of the present invention will be more apparent.
FIG. 1 is a schematic diagram of a lighting device charging port short circuit protection and communication circuit according to the present invention;
FIG. 2 is a schematic diagram of a host power supply unit of a lighting device charging port short-circuit protection and communication circuit according to the present invention;
fig. 3 is a schematic diagram of a signal transmitting unit of a charging port short-circuit protection and communication circuit of a lighting device according to the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-3, a lighting device charging port short-circuit protection and communication circuit includes a signal sending unit and a host power supply unit, wherein the host power supply unit is fixed in the lighting device and connected to a charging port, a battery and an LED, and the signal sending unit is externally connected to the host power supply unit through the charging port;
the host power supply unit is used for power-off protection and controlling the lighting equipment according to the control signal of the signal sending unit. Through add host computer power supply unit between lighting device's battery and the mouth that charges, except playing short-circuit protection's effect, the control signal of external signal transmission unit can also be accepted to the external signal transmission unit of cooperation, realizes communication control's effect.
In this embodiment, the host power supply unit includes: the short-circuit protection and communication receiving pass circuit, the first single chip microcomputer control circuit and the LED drive circuit;
the short-circuit protection and communication receiving circuit is located between the charging port and the battery, and the first single-chip microcomputer control circuit is used for controlling the LED driving circuit according to signals of the short-circuit protection and communication receiving circuit.
In this embodiment, the short circuit protection and communication receiving circuit includes: the transistor comprises a first triode Q2, a second triode Q3, a MOS transistor Q1 and a resistor;
the collector and emitter of the first triode Q2 are connected with the charging port, the collector is grounded through a resistor,
the drain electrode of the MOS transistor Q1 is connected with the emitter electrode of the first triode Q2, and the source electrode is connected with the anode of the battery;
an emitter of the second triode Q3 is connected with a source of the MOS tube Q1, a base of the second triode Q3 is connected with a base of the first triode Q2, and a collector of the second triode Q3 is connected with a grid of the MOS tube Q1 and is grounded with a negative electrode of the battery through a resistor;
the first triode and the second triode are both of a P type, and the MOS tube Q1 is of a P type.
In this embodiment, the short-circuit protection and communication receiving circuit further includes a diode D1D1, and the diode D1 is connected to the source of the MOS transistor Q1, the first monolithic control circuit, and the ground through a resistor R11, respectively.
Short-circuit protection working principle: when the charging port is connected with a charger, the voltage of the charging port is higher than that of the battery, the first triode Q2 is in a state similar to the diode D1, the voltage drop of the MOS transistor Q1 plus the PN junction voltage of the second triode Q3 is forced to be equal to the PN junction voltage of the first triode Q2, and the voltage drop of the MOS transistor Q1 is also caused due to the fact that the PN junction voltage of the second triode Q3 and the PN junction voltage of the first triode Q2 are consistent, so that the second triode Q3 is in a cut-off state, the potential of the grid electrode of the MOS transistor Q1 is equal to 0, and the source electrode and the drain electrode are in a conducting state, and at the moment, the charging current can smoothly pass through the MOS transistor Q1 and the voltage drop is very small. When the charger is removed, the voltage of the charging port is smaller than that of the battery, the second triode Q3 is immediately conducted to reach a saturation state, the grid voltage of the MOS tube Q1 is pulled to the voltage of the battery, therefore, the source electrode and the drain electrode are in a cut-off state, and even if the positive electrode of the charging port is short-circuited to the negative electrode, the battery cannot flow out a large current, and the purpose of short-circuit protection is achieved.
In this embodiment, the signal sending unit includes a control switch SW1, a second single-chip microcomputer control circuit and a signal sending circuit;
the control switch SW1 is used for driving the second singlechip control circuit;
the second singlechip control circuit is connected with the signal sending circuit and used for sending a control signal;
and the signal transmitting circuit is connected with the short-circuit protection and communication receiving circuit through the charging port.
In this embodiment, the host power supply unit and the signal sending unit are both provided with linear voltage reduction circuits, and are respectively used for supplying power to the first single-chip microcomputer control circuit and the second single-chip microcomputer control circuit.
In this embodiment, the signal transmitting circuit includes: the base electrode of the third triode is connected with the second single-chip microcomputer control circuit, and the emitting electrode and the collector electrode of the third triode are connected with the emitting electrode and the collector electrode of the first triode Q2 through a charging port.
The working principle of the communication circuit is as follows: the linear voltage reduction circuit is responsible for providing stable working voltage for the singlechip control circuit. When the control switch SW1 is pressed, the singlechip U8 of the second singlechip control circuit detects that the port RA5 is at a low level, the port RA1 outputs PWM to control the third triode Q4 through the internal processing of the singlechip, because the MOS tube Q1 is cut off, when the PWM is at a high level, the third triode Q4 is switched on, the resistor R21 and the resistor R11 form voltage division to enable the voltage of the pin RA4 of the singlechip U7 of the first singlechip control circuit to be low, otherwise, the voltage of the port is high when the PWM is low, the singlechip U7 can distinguish the PWM sent by the U8 singlechip by detecting the voltage value of the port, and the singlechip U7 enables the port RA3 to output PWM control signals and RA1 enable signals to control the LED driving module, thereby realizing the switching and dimming functions of the LED D3.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A lighting equipment charging port short-circuit protection and communication circuit is characterized by comprising a signal sending unit and a host power supply unit, wherein the host power supply unit is fixed in the lighting equipment and is connected with a charging port, a battery and an LED, and the signal sending unit is externally connected with the host power supply unit through the charging port;
the host power supply unit is used for power-off protection and controlling the lighting equipment according to the control signal of the signal sending unit.
2. The lighting device charging port short-circuit protection and communication circuit as claimed in claim 1, wherein the host power supply unit comprises: the short-circuit protection and communication receiving circuit comprises a short-circuit protection and communication receiving circuit, a first single chip microcomputer control circuit and an LED drive circuit;
the short-circuit protection and communication receiving circuit is located between the charging port and the battery, and the first single-chip microcomputer control circuit is used for controlling the LED driving circuit according to signals of the short-circuit protection and communication receiving circuit.
3. The lighting device charging port short-circuit protection and communication circuit as claimed in claim 2, wherein the signal transmitting unit comprises a control switch, a second single-chip control circuit and a signal transmitting circuit;
the control switch is used for driving the second singlechip control circuit;
the second singlechip control circuit is connected with the signal sending circuit and used for sending a control signal;
and the signal transmitting circuit is connected with the short-circuit protection and communication receiving circuit through the charging port.
4. The lighting device charging port short-circuit protection and communication circuit as claimed in claim 3, wherein the host power supply unit and the signal sending unit are each provided with a linear voltage reduction circuit for respectively supplying power to the first single-chip microcomputer control circuit and the second single-chip microcomputer control circuit.
5. The lighting device charging port short-circuit protection and communication circuit as claimed in claim 4, wherein the short-circuit protection and communication receiving circuit comprises: the transistor comprises a first triode, a second triode, an MOS (metal oxide semiconductor) tube and a resistor;
the collector and the emitter of the first triode are connected with the charging port, the collector is grounded through a resistor,
the drain electrode of the MOS tube is connected with the emitting electrode of the first triode, and the source electrode of the MOS tube is connected with the anode of the battery;
the emitter of the second triode is connected with the source of the MOS tube, the base of the second triode is connected with the base of the first triode, and the collector of the second triode is connected with the grid of the MOS tube and is grounded with the negative electrode of the battery through a resistor;
the first triode and the second triode are both of a P type, and the MOS tube is of a P type.
6. The lighting device charging port short-circuit protection and communication circuit as claimed in claim 5, wherein the short-circuit protection and communication receiving circuit further comprises a diode, and the diode is connected to the source of the MOS transistor, the first single-chip microcomputer control circuit and the ground through a resistor.
7. The lighting device charging port short-circuit protection and communication circuit as claimed in claim 5, wherein the signal transmission circuit comprises: the base electrode of the third triode is connected with the second single-chip microcomputer control circuit, and the emitting electrode and the collector electrode of the third triode are connected with the emitting electrode and the collector electrode of the first triode through the charging port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121027415.XU CN216056359U (en) | 2021-05-14 | 2021-05-14 | Short-circuit protection and communication circuit for charging port of lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121027415.XU CN216056359U (en) | 2021-05-14 | 2021-05-14 | Short-circuit protection and communication circuit for charging port of lighting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056359U true CN216056359U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121027415.XU Active CN216056359U (en) | 2021-05-14 | 2021-05-14 | Short-circuit protection and communication circuit for charging port of lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056359U (en) |
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2021
- 2021-05-14 CN CN202121027415.XU patent/CN216056359U/en active Active
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