CN214901358U - LED lamp capable of being charged by multiple power supplies - Google Patents

LED lamp capable of being charged by multiple power supplies Download PDF

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Publication number
CN214901358U
CN214901358U CN202120391314.4U CN202120391314U CN214901358U CN 214901358 U CN214901358 U CN 214901358U CN 202120391314 U CN202120391314 U CN 202120391314U CN 214901358 U CN214901358 U CN 214901358U
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circuit
power supply
protection circuit
port
led lamp
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连德伦
张剑明
程彬
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Guangdong Wanxinda Electronic Technology Co ltd
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Guangdong Wanxinda Electronic Technology Co ltd
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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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Abstract

The utility model provides a can be with LED lamp that multiple power supply charges, include: the LED display device comprises a power supply input end, a polarity display circuit, an input port protection circuit and an LED module; two ports of the polarity display circuit are respectively connected with the positive end and the negative end of the power supply input end; the first port and the second port of the input port protection circuit are respectively connected with the positive end and the negative end of the power supply input end; the polarity display circuit is connected with the input port protection circuit in parallel; and the third port of the input port protection circuit is connected with the input end of the LED module. The LED lamp capable of being charged by various power supplies can be charged by a direct current positive power supply, a direct current negative power supply, a solar power supply or an alternating current power supply, and has the functions of caller identification, polarity display and alternating current/direct current display; the circuit can be provided with input end short-circuit protection, battery short-circuit overcharge and undervoltage protection, solar charging protection and alternating-current power supply transient impact protection, and the safety performance is high.

Description

LED lamp capable of being charged by multiple power supplies
Technical Field
The utility model relates to a LED lamp technical field that charges particularly, relates to a LED lamp that can charge with multiple power.
Background
At present, the LED lamp adopting the charging mode is widely applied. One of the lamps adopts a direct current power supply to charge a storage battery, and the charging power supply can adopt a commercial power adapter, a mobile power supply, a computer USB interface, a vehicle-mounted 5V power supply, a solar battery and the like. However, many such rechargeable LED lamps on the market have the following problems:
1. the battery capacity is small, the lighting time is short, which is not allowable in some occasions, such as lighting used in underground mines;
2. the product only needs to specify the charging time not to exceed a certain number of hours without an overcharge prevention function;
3. the self-discharge work performance of the used battery is poor, and the product is required to be replenished and charged once only according to the storage time;
4. the safety measures of the charging circuit are not enough, and the lamp is not damaged, and the lamp is only required to be turned on during charging;
5. no under-voltage protection measures are taken;
6. no short-circuit prevention measures are taken;
7. the LED lamp charged by direct current cannot be charged by alternating current, which brings inconvenience in certain occasions;
8. in the LED lamp, the polarity of a power supply is required to be the same as the polarity required by the charged LED lamp when the LED lamp is charged, otherwise, the LED lamp cannot be charged lightly, and the components of the LED lamp can be damaged if the LED lamp is heavy.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can use the LED lamp that multiple power supplies charge, this LED lamp can be connected with DC power supply directly through setting up the power input end and in order to adopt DC power supply to charge, has realized using the alternating current to charge through setting up input port protection circuit, can prevent to cause the damage to the overall circuit in the alternating current transient process through setting up the anti-transient impact protection circuit; the LED lamp can be charged by using various power supplies, has high safety,
in order to realize the above purpose of the utility model, the following technical scheme is adopted:
the utility model provides a can be with LED lamp that multiple power supply charges, include: the LED display device comprises a power supply input end, a polarity display circuit, an input port protection circuit and an LED module;
two ports of the polarity display circuit are respectively connected with the positive end and the negative end of the power supply input end; the first port and the second port of the input port protection circuit are respectively connected with the positive end and the negative end of the power supply input end; the polarity display circuit is connected with the input port protection circuit in parallel;
the third port of the input port protection circuit is connected with the input end of the LED module; the output end of the LED module is connected with the fourth port of the input port protection circuit, and current flows into the input end of the LED module through the third port and flows to the fourth port through the output end of the LED module;
the input end of the power supply is connected with an anti-transient impact protection circuit, and the anti-transient impact protection circuit is connected with the input end of the power supply; the transient impact prevention protection circuit is connected with an alternating current interface, and alternating current flows into the power supply input end through the transient impact prevention protection circuit.
In the prior art, the LED lamp generally adopts a mains adapter, a mobile power supply, a computer USB interface, a vehicle-mounted 5V power supply, a solar battery, and the like for dc charging, but the current LED lamp has the following problems: because the storage battery is generally needed, the illumination lamp is greatly influenced by the capacity of the storage battery, has short illumination time and cannot continuously illuminate; the over-charging of the storage battery is easily caused due to the over-long charging time, so that the use is influenced; only a specific power supply can be used for charging, and the charging device cannot be matched with various power supplies; the circuit can only be charged in a forward direction or a reverse direction, and circuit elements can be damaged once the circuit elements are reversely connected, so that the safety is low.
In order to solve the technical problems, the invention provides an LED lamp capable of being charged by various power supplies, which can be charged by various power supplies, has the functions of caller identification and polarity display, and has the function of port short circuit protection; specifically, the caller identification and polarity display functions can be realized by arranging the polarity display circuit; the input port protection circuit is arranged, so that the circuit can be directly connected with a direct current power supply, an alternating current power supply or a solar power supply, and various power supply charging functions are realized; by arranging the transient impact prevention protection circuit, transient current impact caused by alternating current access can be eliminated, the safety of the circuit is improved, and elements are protected from being damaged.
Preferably, the LED module is connected in parallel with a battery protection circuit; the input end of the battery protection circuit is connected with the third port of the input port protection circuit, and the output end of the battery protection circuit is connected with the third port of the input port protection circuit. The battery protection circuit is arranged, so that short circuit, overcharge and undervoltage protection can be provided for the battery, the safety of the circuit is improved, and the service life of the circuit is prolonged.
Preferably, the battery protection circuit comprises a storage battery and a short circuit, overcharge and undervoltage protection module; the storage battery is connected with the short circuit, overcharge and undervoltage protection modules in parallel. When the external circuit is short-circuited, the short-circuit, overcharge and undervoltage protection module can play a role in protecting the storage battery from being affected by the short circuit. When the voltage of the storage battery is reduced to a certain degree, the short circuit, overcharge and undervoltage protection module can automatically cut off the output, so that the storage battery cannot be damaged by overdischarge. When the storage battery is fully charged, the short circuit, overcharge and undervoltage protection module can automatically cut off the input, so that the storage battery cannot be overcharged.
Preferably, the transient impact preventing circuit comprises a capacitance voltage reducing circuit, a second capacitor and an inductor, and the first resistor is connected in parallel with the first capacitor; the capacitance voltage reduction circuit is connected with the inductor in series, and the second capacitor is connected with the polarity display circuit in parallel. Further, the capacitance voltage reduction circuit comprises a first capacitor and a first resistor, and the first capacitor is connected with the first resistor in parallel. When alternating current is introduced, the capacitance voltage reduction circuit can make the power supply have certain impedance under the steady state condition, and the voltage reduction effect is realized on charging. However, during the process of the alternating current from the switch-on to the steady-state establishment, the impedance of the first capacitor gradually changes from zero to the steady-state value, i.e. from low impedance to high impedance, during which a transient inrush current is generated, which may damage circuit elements. The inductor also has a transient process, and the transient process is a value that the impedance of the inductor gradually changes from infinity to a steady state, namely from high impedance to low impedance, in the process that the power supply is established from the on state to the steady state. The transient impact prevention protection circuit formed by the second capacitor and the inductor can reduce impact caused by the first capacitor and protect the circuit, and meanwhile, the transient impact prevention circuit realizes a pi-type filter structure and can play a certain filtering role.
Preferably, the polarity display circuit comprises a light emitting module and a second resistor, and the light emitting module is connected with the second resistor in series; the light emitting module comprises two light emitting diodes with different colors, and the two light emitting diodes are connected in parallel in an opposite direction. When the direct current power supply is switched on, the positive connection or the negative connection respectively corresponds to red light or green light, and the polarity can be displayed according to the color of the light; when the alternating current power supply is switched on, the two diodes emit light simultaneously.
Preferably, the input port protection circuit is composed of four diodes, and the four diodes constitute a bridge rectifier circuit. Four diodes are respectively D1、D2、D3And D4When the input port is short-circuited, the diode D1、D2、D3And D4The voltage of the positive electrode is lower than that of the negative electrode, the four diodes are stopped, and the storage battery is not influenced by the short circuit of the port. When the direct current positive power supply is switched on D2And D4Conducting, and charging the battery by the direct current positive power supply; when the negative DC power supply is connected to1And D3The direct current negative power supply can charge the battery when the battery is switched on; thereby realizing positive and negative polarity charging; positive half cycle D of input power when AC power is connected2And D4The battery can be charged by turning on the AC power supply, and the negative half cycle D of the input power supply1And D3When the LED is switched on, the power supply can charge the battery, and the LED is directly charged by adopting the alternating current power supply.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the LED lamp of the utility model can be charged by various power supplies, has the functions of caller identification and polarity display, and has the function of port short circuit protection;
(2) by arranging the polarity display circuit, the functions of caller identification and polarity display can be realized according to the luminous color;
(3) the input port protection circuit is arranged, so that the circuit can be directly connected with a direct current power supply, an alternating current power supply or a solar power supply, and various power supply charging functions are realized;
(4) by arranging the transient impact prevention protection circuit, transient current impact caused by alternating current access can be eliminated, the safety of the circuit is improved, and elements are protected from being damaged.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a block diagram of an LED lamp capable of being charged by multiple power sources according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the circuit configuration when a DC current is applied;
FIG. 3 is a schematic diagram of the circuit structure when AC power is applied;
fig. 4 is a schematic circuit diagram of the input port protection circuit.
Wherein:
10-an alternating current interface; 20-anti-transient surge circuit;
201-a first capacitance; 202-a first resistance;
203-a second capacitance; 204-inductance;
30-a power supply input terminal; 40-polarity display circuit;
401-a light emitting diode; 402-a second resistance;
50-input port protection circuit; 60-a battery protection circuit;
601-short circuit, overcharge and undervoltage protection module; 602-a battery;
70-LED module.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to clarify the technical solution of the present invention, the following description is made in the form of specific embodiments.
Examples
Referring to fig. 1 to 4, the present embodiment provides an LED lamp capable of being charged by various power sources, including: a power input terminal 30, a polarity display circuit 40, an input port protection circuit 50 and an LED module 70;
wherein, two ports of the polarity display circuit 40 are respectively connected with the positive end and the negative end of the power input end 30; the first port and the second port of the input port protection circuit 50 are connected to the positive terminal and the negative terminal of the power input terminal 30, respectively; the polarity display circuit 40 is connected in parallel with the input port protection circuit 50;
the third port of the input port protection circuit 50 is connected to the input terminal of the LED module 70; the output end of the LED module 70 is connected to the fourth port of the input port protection circuit 50, and the current flows into the input end of the LED module 70 through the third port and flows to the fourth port through the output end of the LED module 70;
the power input end 30 is connected with an anti-transient impact protection circuit, and the anti-transient impact protection circuit is connected with the power input end 30; the transient impact protection circuit is connected to an ac interface 10 through which ac current flows into the power input 30.
As shown in fig. 2, the battery protection circuit 60 is connected in parallel to the LED module 70; the input terminal of the battery protection circuit 60 is connected to the third port of the input port protection circuit 50, and the output terminal of the battery protection circuit 60 is connected to the third port of the input port protection circuit 50.
The battery protection circuit 60 includes a storage battery 602 and a short-circuit, overcharge and undervoltage protection module 601; the battery 602 is connected in parallel with the short circuit, overcharge, and undervoltage protection module 601. When the external circuit is short-circuited, the short-circuit, overcharge and undervoltage protection module 601 can protect the battery 602 from the short-circuit. When in useThe voltage of the battery 602 drops to a certain degree, and the short circuit, overcharge and undervoltage protection module 601 will automatically disconnect the output, so that the battery 602 will not be damaged by overdischarge. When the battery 602 is fully charged, the short circuit, overcharge, and undervoltage protection module 601 will automatically disconnect the input, so that the battery 602 will not be overcharged. The short circuit, overcharge, and undervoltage protection module 601 used in this embodiment is a commercially available integrated circuit, which has four interfaces: p+、P-、B+And B-。B+And B-Connecting the positive and negative electrodes of the battery, P+And P-Is the port of the power supply, which is connected to the circuit to be powered and charged. P+Is a positive electrode, P-Is a negative electrode.
In the present embodiment, the polarity display circuit 40 includes a light emitting LED module 70 and a second resistor 402, the light emitting LED module 70 is connected in series with the second resistor 402; the light emitting LED module 70 comprises two light emitting diodes 401 of different colors, the two light emitting diodes 401 being connected in anti-parallel. In this embodiment, one of the light emitting diodes 401 is red, the other light emitting diode 401 is green, the light emitting diodes 401 emit light to display an incoming call, when a dc power supply is connected, the forward connection or the reverse connection respectively corresponds to red light or green light, the specific correspondence can be adjusted according to different connection modes, and the current input direction can be determined according to the color of the light; when the alternating current power supply is switched on, the two diodes emit light simultaneously.
As shown in fig. 4, the input port protection circuit 50 is composed of four diodes, and the four diodes constitute a bridge rectifier circuit. Four diodes are respectively D1、D2、D3And D4When the input port is short-circuited, the diode D1、D2、D3And D4The voltage of the positive electrode of the battery is lower than that of the negative electrode, the four diodes are stopped, and the storage battery 602 is not influenced by the short circuit of the port; when a dc power source is used, the dc power source may be directly connected to the power input terminal 30. When the direct current positive power supply is switched on D2And D4On, the dc positive power supply can charge the battery 602; when the negative DC power supply is connected to1And D3The direct current negative power supply can be conducted to the storage battery602, charging; thereby realizing positive and negative polarity charging; positive half cycle D of input power when AC power is connected2And D4The battery 602 can be charged by turning on the AC power supply, and the negative half cycle D of the power supply is input1And D3When turned on, the battery 602 can also be charged.
When solar energy is used for charging, the solar energy can be directly connected to the power input 30. When the solar output is connected with positive voltage, if the output voltage of the solar battery is higher than the voltage of the battery in the lamp, the diode D2And D4When the solar battery is in forward conduction, the solar battery charges the battery; diode D when the output voltage of the solar cell is lower than the voltage of the battery in the lamp2And D4When the lamp is in reverse load, the battery in the lamp can not discharge to the solar battery. Solar charging is protected. When the solar output is connected with negative voltage, if the output voltage of the solar battery is higher than the voltage of the battery in the lamp, the diode D1And D3When the solar battery is in forward conduction, the solar battery charges the battery; diode D when the output voltage of the solar cell is lower than the voltage of the battery in the lamp1And D3When the lamp is in reverse load, the battery in the lamp can not discharge to the solar battery. Solar charging is protected.
As shown in fig. 3, the transient-shock prevention circuit 20 includes a capacitor voltage reduction circuit, a second capacitor 203, and an inductor 204, wherein a first resistor 202 is connected in parallel with a first capacitor 201; the capacitor step-down circuit is connected in series with the inductor 204, and the second capacitor 203 is connected in parallel with the polarity display circuit 40. Further, the capacitance voltage-reducing circuit includes a first capacitor 201 and a first resistor 202, and the first capacitor 201 is connected in parallel with the first resistor 202. When alternating current is introduced, the capacitance voltage reduction circuit can make the power supply have certain impedance under the steady state condition, and the voltage reduction effect is realized on charging. However, the impedance of the first capacitor 201 gradually changes from zero to a steady-state value, i.e., from low impedance to high impedance, during the process of the alternating current from being turned on to the steady-state establishment, a transient rush current is generated during the process, and the transient rush current may damage circuit elements. The inductor 204 will also have a transient that is a gradual change in the impedance of the inductor 204 from infinity to steady state, i.e., from high to low impedance, during the power up to steady state establishment. The transient impact prevention protection circuit formed by the second capacitor 203 and the inductor 204 can reduce impact caused by the first capacitor 201, protect the circuit, and meanwhile, the transient impact prevention circuit 20 realizes a pi-type filter structure and can play a certain filtering role.
In fact, the transient impact circuit is used for eliminating impact caused by transient processes, for example, at the moment of ac power connection, because there is a transient process in the current and voltage on the inductor 204 and the second capacitor 203, wherein the transient process on the second capacitor 203 is a short circuit before a steady state, the transient process on the inductor 204 is an open circuit before a steady state is switched, the inductor 204 generates a large self-induced electromotive force, and the direction of the self-induced electromotive force is opposite to the direction of the ac voltage, so that the passage of the ac current is blocked, and the ac current passing through the first inductor 204 is greatly reduced.
In this embodiment, the LED module 70 may be composed of a switch, an LED lamp and a resistor connected in series as shown in fig. 2, or may be formed by providing two parallel resistors connected in series with the LED lamp as shown in fig. 3, and providing a single-pole double-throw switch between the two parallel resistors and the LED lamp, and by switching the single-pole double-throw switch, the connected resistors can be changed, so as to switch the brightness of the LED lamp.
The LED lamp of the embodiment can be charged by using various power supplies, has the functions of caller identification and polarity display, and has the function of port short-circuit protection; by arranging the polarity display circuit, the functions of caller identification and polarity display can be realized according to the luminous color; the input port protection circuit is arranged, so that the circuit can be directly connected with a direct current power supply, an alternating current power supply or a solar power supply, and various power supply charging functions are realized; by arranging the transient impact prevention protection circuit, transient current impact caused by alternating current access can be eliminated, the safety of the circuit is improved, and elements are protected from being damaged.
In a word, the LED lamp capable of being charged by multiple power sources of the present invention can be charged by a direct current positive power source, a direct current negative power source, a solar power source or an alternating current power source, and has functions of caller identification, polarity display, and ac/dc display; the circuit can be provided with input end short-circuit protection, battery short-circuit overcharge and undervoltage protection, solar charging protection and alternating-current power supply transient impact protection, and the safety performance is high.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (7)

1. An LED lamp that can be charged by a plurality of power sources, comprising: the LED display device comprises a power supply input end, a polarity display circuit, an input port protection circuit and an LED module;
two ports of the polarity display circuit are respectively connected with the positive end and the negative end of the power supply input end; the first port and the second port of the input port protection circuit are respectively connected with the positive end and the negative end of the power supply input end; the polarity display circuit is connected with the input port protection circuit in parallel;
the third port of the input port protection circuit is connected with the input end of the LED module; the output end of the LED module is connected with the fourth port of the input port protection circuit, and current flows into the input end of the LED module through the third port and flows to the fourth port through the output end of the LED module;
the input end of the power supply is connected with a transient impact prevention circuit, and the transient impact prevention protection circuit is connected with the input end of the power supply; the transient impact prevention protection circuit is connected with an alternating current interface, and alternating current flows into the power supply input end through the transient impact prevention protection circuit.
2. The LED lamp of claim 1, wherein a battery protection circuit is connected in parallel to the LED module; the input end of the battery protection circuit is connected with the third port of the input port protection circuit, and the output end of the battery protection circuit is connected with the third port of the input port protection circuit.
3. The LED lamp of claim 2, wherein the battery protection circuit comprises a battery and short, overcharge, and undervoltage protection modules; the storage battery is connected with the short circuit, overcharge and undervoltage protection modules in parallel.
4. The LED lamp of claim 1, wherein the anti-transient-surge circuit comprises a capacitive voltage-dropping circuit, a second capacitor, and an inductor, the capacitive voltage-dropping circuit being connected in series with the inductor, the second capacitor being connected in parallel with the polarity display circuit.
5. The LED lamp of claim 4, wherein the capacitive voltage reduction circuit comprises a first capacitor and a first resistor, the first capacitor being connected in parallel with the first resistor.
6. The LED lamp of claim 1, wherein the polarity display circuit comprises a light module and a second resistor, the light module being connected in series with the second resistor; the light emitting module comprises two light emitting diodes with different colors, and the two light emitting diodes are connected in parallel in an opposite direction.
7. The LED lamp of claim 1, wherein the input port protection circuit comprises four diodes, and the four diodes comprise a bridge rectifier circuit.
CN202120391314.4U 2021-02-22 2021-02-22 LED lamp capable of being charged by multiple power supplies Active CN214901358U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120391314.4U CN214901358U (en) 2021-02-22 2021-02-22 LED lamp capable of being charged by multiple power supplies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120391314.4U CN214901358U (en) 2021-02-22 2021-02-22 LED lamp capable of being charged by multiple power supplies

Publications (1)

Publication Number Publication Date
CN214901358U true CN214901358U (en) 2021-11-26

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ID=78859020

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120391314.4U Active CN214901358U (en) 2021-02-22 2021-02-22 LED lamp capable of being charged by multiple power supplies

Country Status (1)

Country Link
CN (1) CN214901358U (en)

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