CN108575030A - Portable lamp and its control method - Google Patents

Portable lamp and its control method Download PDF

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Publication number
CN108575030A
CN108575030A CN201710149615.4A CN201710149615A CN108575030A CN 108575030 A CN108575030 A CN 108575030A CN 201710149615 A CN201710149615 A CN 201710149615A CN 108575030 A CN108575030 A CN 108575030A
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CN
China
Prior art keywords
circuit
rechargeable battery
portable lamp
current
control
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Application number
CN201710149615.4A
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Chinese (zh)
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CN108575030B (en
Inventor
施敏
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上海巍立智能科技有限公司
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Priority to CN201710149615.4A priority Critical patent/CN108575030B/en
Publication of CN108575030A publication Critical patent/CN108575030A/en
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Publication of CN108575030B publication Critical patent/CN108575030B/en

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
    • H05B47/10Controlling the light source
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068Battery or charger load switching, e.g. concurrent charging and load supply

Abstract

A kind of portable lamp and its control method.The method includes:Detect the portable lamp whether external power supply;When the portable lamp external power supply and detect Lighting control instruction when, adjust the operating current of the lighting circuit, and detect the current state of the rechargeable battery simultaneously, with keep the rechargeable battery always be in charged state.Using said program, it is possible to reduce to the influence in the service life of the rechargeable battery in charge type portable lamp when being illuminated when filling.

Description

Portable lamp and its control method

Technical field

The present invention relates to portable lamp technical fields, and in particular to a kind of portable lamp and its control method.

Background technology

Portable lamp is widely used in railway, electric power, ship as portable lighting tool because of the characteristic that it is convenient for carrying Oceangoing ship oil, is camped, the fields such as the disaster relief.

Classify according to power supply, portable lamp generally includes two types:One is using dry cell as the portable of power supply Formula lamps and lanterns, another kind are the portable lamps of charge type.Wherein, chargeable electricity can be installed in the portable lamp of charge type Pond can be charged by power supplys such as external charge treasured.

The portable lamp of existing charge type can usually be illuminated after fully charged, in case of emergency, also may be used To be illuminated in charging, but the service life of lamp interior rechargeable battery can be influenced at this time.

Invention content

Present invention solves the technical problem that how being reduced when being illuminated when filling to filling in charge type portable lamp The influence in the service life of battery.

In order to solve the above technical problems, the embodiment of the present invention provides a kind of control method of portable lamp, it is described portable Formula lamps and lanterns include rechargeable battery and lighting circuit, and the lighting circuit is coupled with the rechargeable battery, and the power for illumination Road and the rechargeable battery can adapt to external power supply, and the control method includes:Whether detect the portable lamp External power supply;When the portable lamp external power supply and detect Lighting control instruction when, adjust the work of the lighting circuit Make electric current, and detect the current state of the rechargeable battery simultaneously, to keep the rechargeable battery to be in charging shape always State.

Optionally, the current state of the detection rechargeable battery, including:It is detected using test circuit for cell status The charging current and discharge current of the rechargeable battery, and according to obtained charging current and discharge current is detected, determine institute State the current state of rechargeable battery.

Optionally, the operating current for adjusting the lighting circuit includes:Reduce the operating current of the lighting circuit.

Optionally, the Lighting control is inputted using any one following mode to instruct:The mode of touch interface;Button side Formula;The mode of voice;The mode of remote control.

The embodiment of the present invention additionally provides a kind of portable lamp, and the portable lamp includes:Rechargeable battery;Illumination Circuit;Input circuit is suitable for input Lighting control instruction;Current regulating circuit is suitable for adjusting the work electricity of the lighting circuit Stream;Test circuit for cell status is adapted to detect for the current state of the rechargeable battery;Control circuit, with the input circuit, Current regulating circuit and test circuit for cell status coupling, suitable for working as the portable lamp external power supply and detecting illumination control When system instruction, the operating current that the current regulating circuit adjusts the lighting circuit is controlled, and control the battery shape simultaneously State detection circuit detects the current state of the rechargeable battery, to keep the rechargeable battery to be in charged state always.

Optionally, the test circuit for cell status is adapted to detect for the charging current and electric discharge electricity of the rechargeable battery Stream, and testing result is input to the control circuit.

Optionally, the test circuit for cell status includes:It is adapted to detect for the of the charging current of the rechargeable battery One detection sub-circuit, and it is adapted to detect for the second detection sub-circuit of the discharge current of the rechargeable battery.

Optionally, the first detection sub-circuit and the second detection sub-circuit structure are identical, and include:First resistor, Second resistance, amplifier, PMOS tube and 3rd resistor, wherein:The negative-phase input of the first resistor and amplifier and described The source electrode of PMOS tube couples;The second resistance and the normal phase input end of the amplifier couple;The output end of the amplifier It is coupled with the grid of the PMOS tube;The source electrode of the PMOS tube is coupled with substrate, and drain electrode is grounded through the 3rd resistor;It is described First resistor is identical as second resistance resistance value.

Optionally, the portable lamp further includes:First voltage conversion circuit and second voltage conversion circuit, wherein: The first voltage conversion circuit, input terminal are coupled with charge port, and output end is coupled with the rechargeable battery and control circuit, Voltage suitable for being inputted to the charge port carries out voltage conversion, obtains being suitable for being input to rechargeable battery and the electricity of control circuit Pressure;The second voltage conversion circuit, input terminal are coupled with the first voltage conversion circuit, output end and the current regulation Circuit couples, and the work to work suitable for the lighting circuit is converted to suitable for carrying out voltage to the first voltage conversion circuit Voltage, and maintain preset second voltage value.

Optionally, the current regulating circuit is suitable for being in charged state when the rechargeable battery and receives illumination control When system instruction, reduce the operating current of the lighting circuit.

Optionally, the portable lamp further includes:Crossing detector circuit couples with the current regulating circuit, is suitable for The operating current of the lighting circuit is detected, and feeds back to the control circuit.

Optionally, input circuit described in the portable lamp be it is following any one:Touch interface;Voice unit;It presses Keypad;Teleinstruction receiving unit.

Compared with prior art, the technical solution of the embodiment of the present invention has the advantages that:

Using the above scheme, by the electric current inputted when portable lamp external power supply, a part is used as portable lamp The operating current of tool, charging current of the another part as rechargeable battery, therefore, in portable lamp external power supply and detection When being instructed to Lighting control, the operating current of the portable lamp is adjusted so that the rechargeable battery is always in charging shape State reduces the charge and discharge number of rechargeable battery so as to avoid the switching repeatedly of rechargeable battery charging and discharging state, therefore can To improve the service life of rechargeable battery.

Description of the drawings

Fig. 1 is a kind of flow chart of the control method of portable lamp provided in an embodiment of the present invention;

Fig. 2-Fig. 4 is a kind of local circuit structural schematic diagram of portable lamp provided in an embodiment of the present invention respectively;

Fig. 5 is a kind of structural schematic diagram of first detection sub-circuit provided in an embodiment of the present invention.

Specific implementation mode

Existing portable lamp, usually using a certain fixed current value as operating current.Portable lamp is external Power supply, operating current of the electric current one side that external power supply inputs as portable lamp, is on the one hand used as in portable lamp Rechargeable battery charging current.In order to ensure that portable lamp is worked with the fixed current value, rechargeable battery is frequent It needs to switch to discharge condition by current charged state, to provide enough operating currents for portable lamp, so usually The charge and discharge number that rechargeable battery can be increased, influences the service life of rechargeable battery.

In view of the above-mentioned problems, an embodiment of the present invention provides a kind of control methods of portable lamp, by portable Lamps and lanterns external power supply and detect Lighting control instruction when, adjust the operating current of the portable lamp so that described to fill Battery reduces chargeable electricity in charged state so as to avoid the switching repeatedly of rechargeable battery charging and discharging state always The charge and discharge number in pond, therefore the service life of rechargeable battery can be improved.

It is understandable to enable above-mentioned purpose, feature and the advantageous effect of the present invention to become apparent, below in conjunction with the accompanying drawings to this The specific embodiment of invention explains in detail.

Referring to Fig.1, an embodiment of the present invention provides a kind of control methods of portable lamp.

First, in order to make those skilled in the art more fully understand the control method, the portable lamp is carried out It is described as follows:It is provided with rechargeable battery in the portable lamp.By the way that the charging on the portable lamp surface is arranged Mouth external power supply, on the one hand can provide operating current for portable lamp, on the other hand can be that the rechargeable battery fill Electricity.

In specific implementation, the control method may include steps of:

Step 11, detect the portable lamp whether external power supply.

In specific implementation, may be used a variety of methods detect the portable lamp whether external power supply, for example, can be with Whether the electric current for detecting the portable lamp charge port input is more than 0.When the electric current of portable lamp charge port input When more than 0, portable lamp external power supply is determined, otherwise determine the non-external power supply of portable lamp.

Wherein, the external power supply can be charger baby, alternating current etc., and the charge port on the portable lamp surface can be USB port etc..

Step 12, when the portable lamp external power supply and detect Lighting control instruction when, adjust the power for illumination The operating current on road, and the current state of the rechargeable battery is detected simultaneously, to keep the rechargeable battery to be in always Charged state.

In specific implementation, various ways input may be used in the Lighting control instruction, is not restricted specifically.For example, Touch interface can be provided on the portable lamp, inputting the Lighting control by the touch interface instructs.It is described Corresponding keypad can also be set on portable lamp, referred to by Lighting control described in the key-press input on the keypad It enables.Corresponding radio reception device, such as microphone can also be set on the portable lamp, voice shape is inputted by the radio reception device The Lighting control of formula instructs.The control terminals such as the portable lamp and mobile phone can also be bound, pass through the side of remote control Formula inputs the Lighting control instruction.

In specific implementation, when the portable lamp external power supply and detect Lighting control instruction when, can reduce The operating current of the portable lamp.By the electric current inputted when portable lamp external power supply, a part is as portable The operating current of formula lamps and lanterns, charging current of the another part as rechargeable battery, therefore in external power input to portable lamp In the case that the electric current of tool is certain, the charging electricity of rechargeable battery can be increased by reducing the operating current of the portable lamp Stream avoids the switching of rechargeable battery charging and discharging state, reduction can it is possible thereby to so that rechargeable battery maintains charged state The charge and discharge number of rechargeable battery, therefore the service life of rechargeable battery can be improved.Certainly, it is reached in the charging current of rechargeable battery When to pre-set current value, the operating current of the portable lamp can also be increased, as long as so that rechargeable battery maintains fills Electricity condition.

In specific implementation, the current state that various ways detect the rechargeable battery may be used.The present invention's In one embodiment, the current state that test circuit for cell status detects the rechargeable battery may be used.

Further, in order to more accurately detect the current state of the rechargeable battery, battery status may be used Detection circuit detects the charging current and discharge current of the rechargeable battery, and then the charging current that is obtained according to detection and puts Electric current determines the current state of the rechargeable battery.

For example, when the charging current of the rechargeable battery is more than 0, determine that the rechargeable battery is in charging shape State.When the discharge current of the rechargeable battery is more than 0, determine that the rechargeable battery is in discharge condition.

In specific implementation, the rechargeable battery can be nickel-cadmium cell, or Ni-MH battery, lithium-ion electric Pond, lead accumulator or lithium iron battery etc. can be specifically configured according to the actual needs of the portable lamp.

In specific implementation, the portable lamp can be any one lamps and lanterns such as flashlight, desk lamp, not limit specifically System.It is understood which kind of lamps and lanterns the specific portable lamp is, it is not construed as limiting the invention, and at this Within the protection domain of invention.

As shown in the above, the control method of the portable lamp in the embodiment of the present invention, by portable lamp External power supply and when detecting Lighting control instruction, adjusts the operating current of the portable lamp, can described can fill Battery maintains charged state, so as to improve the service life of rechargeable battery.

In order to enable those skilled in the art are better understood from and realize the present invention, below to the control of above-mentioned portable lamp Portable lamp corresponding to method processed is described in detail.

With reference to the electrical block diagram of Fig. 2~portable lamp shown in Fig. 4, the circuit structure of the portable lamp It can specifically include following component part:

Rechargeable battery 21;

Lighting circuit 22;

Input circuit SW1 is suitable for input Lighting control instruction;

Current regulating circuit 23 is suitable for adjusting the operating current of the lighting circuit 22;

Test circuit for cell status 24 is adapted to detect for the current state of the rechargeable battery 21;

Control circuit U3, suitable for when the portable lamp external power supply and detect Lighting control instruction when, control institute The operating current that current regulating circuit 23 adjusts the lighting circuit is stated, and controls the inspection of the test circuit for cell status 24 simultaneously The current state for surveying the rechargeable battery, to keep the rechargeable battery to be in charged state always.

In specific implementation, the charge port of portable lamp can be USB interface, or other types of interface. For using USB interface as the charge port of portable lamp, control circuit U3 can be coupled by resistance R14 and USB interface, be led to Whether the voltage value for crossing detection resistance R14 and resistance R15 intermediate node USB sense reaches preset the first voltage value, can be with Determine portable lamp whether external power supply.

In specific implementation, the portable lamp can also include that first voltage conversion circuit U1 and second voltage turn Change circuit.

Wherein, the input terminal of the first voltage conversion circuit U1 can be coupled with USB interface, output end and triode Q3 And sampling resistor Rcs coupling, the supply voltage for being suitable for input USB interface carry out voltage conversion, obtain suitable for triode Q3 and The voltage that rechargeable battery 21 works.For example, the supply voltage of USB interface input can be 5V, converted through the first voltage After the voltage conversion of circuit U 1, the voltage between 3.7V~4.2V can be obtained.Mono- sides of first voltage conversion circuit U1 Face is that rechargeable battery 21 provides charging voltage through resistance Rcs, on the one hand through triode Q3 circuit U 3 and lighting circuit in order to control 22 provide supply voltage VCC.

The input terminal of the second voltage conversion circuit and the output end of the first voltage conversion circuit U1 couple, output End is coupled with current regulating circuit 23, is suitable under the control of the enable signal EN of control circuit U3 outputs, is converted to first voltage 1 transformed voltage of circuit U carries out further voltage conversion, obtains being suitable for the operating voltage that lighting circuit 22 works, and tie up It holds in preset second voltage value.For example, when the output voltage of the first voltage conversion circuit U1 is 3.7V, through the second electricity After voltage conversion circuit U2 conversions, stable 6V voltages can be obtained.

Specifically, the second voltage conversion circuit may include:Voltage conversion sub-circuit U2 and voltage stabilizing sub-circuit.It is described Voltage stabilizing sub-circuit may include:Inductance L1, diode D3, resistance R3, resistance R4, capacitance C3 and capacitance C4.Wherein, inductance L1 with Voltage conversion sub-circuit U2 is in parallel, and resistance R3 is in parallel with capacitance C, and resistance R3 is in parallel with capacitance C4 after connecting with resistance R4.Two poles Pipe D3 is coupled between inductance L1 and resistance R3.The FB of the intermediate node FB and voltage conversion sub-circuit U2 of resistance R3 and resistance R4 Pin connects, suitable for feeding back to voltage conversion sub-circuit U2 to voltage conversion sub-circuit U2 and by voltage stabilizing result.

In specific implementation, current regulating circuit 23 may include:With lighting circuit 22 and second voltage conversion circuit coupling The NMOS tube Q1 connect, the NMOS tube Q2 with the coupling of second voltage conversion circuit are coupled to the grid and NMOS tube Q2 of NMOS tube Q1 Drain electrode between resistance R6, the capacitance C2 being coupled between the grid and ground wire of NMOS tube Q1, the grid of NMOS tube Q2 and control Circuit U 3 processed couples, and the source electrode of NMOS tube Q1 is grounded by resistance RS.The drive signal that control circuit U3 is exported through resistance R5 DRV, and by the pulsewidth of drive signal DRV adjustment NMOS tubes Q2, and then change the drain current of NMOS tube Q1.Due to power for illumination Road 22 is connected with NMOS tube Q1, therefore changes the drain current of NMOS tube Q1, is equivalent to the operating current for changing lighting circuit 22, into And it can achieve the purpose that adjust 22 operating current of lighting circuit.

In specific implementation, the portable lamp can also include:Current detection circuit 25, is adapted to detect for lighting circuit 22 operating current and the pin CC that testing result is input to control circuit U3.Specifically, the current detection circuit 25 can To include:Operational amplifier U4, resistance R7, resistance R8 and resistance R9.Wherein, the normal phase input end of operational amplifier U4 is logical The source electrode for crossing resistance R7 and NMOS tube Q1 couples, and negative-phase input is coupled by resistance R8 and ground wire.Resistance R9 is coupled to described Between the negative-phase input and output end of operational amplifier U4.It is amplified, is amplified by the voltage difference at the both ends detection resistance RS Result afterwards is input to control circuit U3, and control circuit U3 is it is possible thereby to know the operating current of lighting circuit 22.

In specific implementation, lighting circuit 22 is by two four feet electric wire connecting junction CON3 and CON4 can coupling, with second Voltage conversion circuit U2, current detection circuit 25 and control circuit U3 couplings.In one embodiment of this invention, four foot wiring The 4th pin of device CON3 and the 3rd pin can be in series with thermo-sensitive resistor NTC, the 1st pin and the control electricity of four foot electric wire connecting junction CON4 The NTC_AD pins of road U3 couple, and the operating temperature of lighting circuit 22 can be detected by the quick resistance NTC.

In one embodiment of this invention, lighting circuit 22 is made of four LED light groups in parallel, each LED light group packet Two concatenated LED light are included, LED light D2~D4, D8~D12 are specifically included.

In specific implementation, input circuit SW1 passes through the two five foot electric wire connecting junction CON1 and CON2 that can be coupled and control Circuit U 3 couples.Wherein, the input circuit SW1 can be touch interface, and the photograph is inputted by the touch interface unit Bright control instruction;May be corresponding keypad, user can input different photographs by modes such as touch potential, intensity Bright control instruction;It can also be corresponding voice unit, such as microphone, the photograph of speech form is inputted by institute's speech units Bright control instruction.In specific implementation, the input circuit SW1 can also be for teleinstruction receiving unit, by described remote Journey instruction reception unit binds the control terminals such as the portable lamp and mobile phone, is inputted by way of remote control described Lighting control instructs.

In one embodiment of this invention, the portable lamp can also include:Indicating circuit 26, being used to indicate can fill The current state of battery 21.For example, two LED light R (Red LED) and Y can be arranged in the indicating circuit on keypad (Yellow LED) couples described LED etc. by five foot electric wire connecting junction CON1 and CON2 and control circuit U3.In control circuit U3 After knowing the current state of rechargeable battery 21, it can be indicated by controlling LED light.

In one embodiment of this invention, the test circuit for cell status 24 is adapted to detect for the rechargeable battery 21 Charging current Charge AD and discharge current Discharge AD, and testing result is input to the corresponding of control circuit U3 and is drawn Foot is determined the current state of the rechargeable battery 21 by control circuit U3 according to testing result.

In specific implementation, with reference to Fig. 2, the test circuit for cell status 24 may include:First detection sub-circuit U5 And the second detection sub-circuit U6.Wherein, the first detection sub-circuit U5 is adapted to detect for the charging electricity of the rechargeable battery 21 Stream, the second detection sub-circuit U6 are adapted to detect for the discharge current of the rechargeable battery 21.

The control circuit U3 determines chargeable electricity in the charging current Charge AD > 0 of the rechargeable battery 21 Pond 21 is in charged state, in the discharge current Discharge AD < 0 of the rechargeable battery 21, determines rechargeable battery 21 are in discharge condition.

In specific implementation, may exist with reference to Fig. 2 and Fig. 5, the first detection sub-circuit U5 and the second detection sub-circuit U6 A variety of circuit structures, are not restricted specifically.In one embodiment of this invention, the first detection sub-circuit U5 and the second detection son electricity Road U6 structures are identical, and may each comprise:First resistor R1, second resistance R2, amplifier AP, PMOS tube P1 and 3rd resistor R3, wherein:

The negative-phase input of the first resistor R1 and amplifier AP and the source electrode of the PMOS tube P1 couple.Described second The normal phase input end of the resistance R2 and amplifier AP couples.The grid of the output end of the amplifier AP and the PMOS tube P1 Coupling.The source electrode of the PMOS tube P1 is coupled with substrate, and drain electrode is grounded through the 3rd resistor R3.The first resistor R1 and Two resistance R2 resistance values are identical.

In specific implementation, with reference to Fig. 2 and Fig. 5, the charging current of the rechargeable battery 21 is through the sampling resistor Rcs It is input to the rechargeable battery 21, the discharge current of the rechargeable battery 21 is the illumination through the sampling resistor Rcs 22 power supplies.

Specifically, in the first detection sub-circuit U5, the ends RS- of first resistor R1 and the first end k of sampling resistor Rcs Coupling, the ends RS+ of second resistance R2 are coupled with the second end m of sampling resistor Rcs.In the second detection sub-circuit 252, first The ends RS+ of resistance R1 and the second end m of sampling resistor Rcs are coupled, the ends RS- of second resistance R2 and the first of sampling resistor Rcs Hold k couplings.

The first detection sub-circuit U5 and the second detection sub-circuit U6 can put the voltage difference at the both ends sampling resistor Rcs Greatly.When rechargeable battery 21 discharges, the PMOS tube P1 conductings of the first detection sub-circuit U5, output discharge current Discharge AD=(V1*R1)/(Rcs*R3), wherein V1 is the voltage of the first 251 output end out of detection sub-circuit.When to rechargeable battery When 21 charging, the PMOS tube P1 conductings of the second detection sub-circuit U6, output charging current stream Charge AD=(V2*R1)/ (Rcs*R3), wherein V2 is the voltage of the second 252 output end out of detection sub-circuit.

In specific implementation, the first detection sub-circuit U5 and the second detection son electricity can be selected according to actual conditions The resistance value of the gain of amplifier and first resistor R1 and 3rd resistor R3 in the U6 of road.For example, the gain of amplifier can be The resistance value of 25, first resistor R1 are 400 ohm, and the resistance value of 3rd resistor R3 is 10 ohm.The gain of amplifier may be The resistance value of 100, first resistor R1 are 100 ohm, and the resistance value of 3rd resistor R3 is 10 ohm.The gain of amplifier can also be The resistance value of 200, first resistor R1 are 100 ohm, and the resistance value of 3rd resistor R3 is 20 ohm.

In specific implementation, the pin MCLR and PGC of control circuit U3 accordingly controls program for burning, pin DGND and PGD is grounding pin.

In specific implementation, with reference to Fig. 2, after portable lamp external power supply, first voltage conversion circuit U1 is to external electricity After the voltage of source input carries out voltage conversion, supply voltage is provided for other circuits of portable lamp.When user passes through input When circuit SW1 input Lighting control instructions, control circuit U3 is after detecting Lighting control instruction, to second voltage conversion circuit U2 sends enable signal EN, and sends drive signal DRV to current regulating circuit 23.On the one hand control circuit U3 passes through battery State detection circuit 24 monitors the current state of rechargeable battery 21 in real time, on the one hand passes through current regulating circuit 23 and adjusts illumination The operating current of circuit 22 so that the rechargeable battery 21 maintains charged state, so as to improve rechargeable battery Service life.

One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage Medium may include:ROM, RAM, disk or CD etc..

Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute Subject to the range of restriction.

Claims (12)

1. a kind of control method of portable lamp, the portable lamp includes rechargeable battery and lighting circuit, feature It is, the lighting circuit is coupled with the rechargeable battery, and the lighting circuit and the rechargeable battery can be adapted to In external power supply, the control method includes:
Detect the portable lamp whether external power supply;
When the portable lamp external power supply and detect Lighting control instruction when, adjust the lighting circuit work electricity Stream, and the current state of the rechargeable battery is detected simultaneously, to keep the rechargeable battery to be in charged state always.
2. the control method of portable lamp as described in claim 1, which is characterized in that the detection rechargeable battery Current state, including:
The charging current and discharge current of the rechargeable battery are detected using test circuit for cell status, and are obtained according to detection Charging current and discharge current, determine the current state of the rechargeable battery.
3. the control method of portable lamp as described in claim 1, which is characterized in that the adjusting lighting circuit Operating current includes:
Reduce the operating current of the lighting circuit.
4. the control method of portable lamp as described in claim 1, which is characterized in that defeated using any one following mode Enter the Lighting control instruction:
The mode of touch interface;
Key mode;
The mode of voice;
The mode of remote control.
5. a kind of portable lamp, which is characterized in that including:
Rechargeable battery;
Lighting circuit;
Input circuit is suitable for input Lighting control instruction;
Current regulating circuit is suitable for adjusting the operating current of the lighting circuit;
Test circuit for cell status is adapted to detect for the current state of the rechargeable battery;
Control circuit is coupled with the input circuit, current regulating circuit and test circuit for cell status, is suitable for when described portable Formula lamps and lanterns external power supply and detect Lighting control instruction when, control the work that the current regulating circuit adjusts the lighting circuit Make electric current, and control the current state that the test circuit for cell status detects the rechargeable battery simultaneously, described in holding Rechargeable battery is in charged state always.
6. portable lamp as claimed in claim 5, which is characterized in that the test circuit for cell status is adapted to detect for institute The charging current and discharge current of rechargeable battery are stated, and testing result is input to the control circuit.
7. portable lamp as claimed in claim 6, which is characterized in that the test circuit for cell status includes:Suitable for inspection The first detection sub-circuit of the charging current of the rechargeable battery is surveyed, and is adapted to detect for the electric discharge electricity of the rechargeable battery Second detection sub-circuit of stream.
8. portable lamp as claimed in claim 7, which is characterized in that the first detection sub-circuit and the second detection son electricity Line structure is identical, and includes:First resistor, second resistance, amplifier, PMOS tube and 3rd resistor, wherein:
The source electrode of the negative-phase input and the PMOS tube of the first resistor and amplifier couples;
The second resistance and the normal phase input end of the amplifier couple;
The output end of the amplifier and the grid of the PMOS tube couple;
The source electrode of the PMOS tube is coupled with substrate, and drain electrode is grounded through the 3rd resistor;
The first resistor is identical as second resistance resistance value.
9. portable lamp as claimed in claim 5, which is characterized in that further include:First voltage conversion circuit and the second electricity Voltage conversion circuit, wherein:
The first voltage conversion circuit, input terminal are coupled with charge port, output end and the rechargeable battery and control circuit Coupling is suitable for carrying out voltage conversion to the voltage that the charge port inputs, and obtains being suitable for being input to rechargeable battery and control electricity The voltage on road;
The second voltage conversion circuit, input terminal are coupled with the first voltage conversion circuit, output end and the electric current tune The coupling of economize on electricity road is converted to the work to work suitable for the lighting circuit suitable for carrying out voltage to the first voltage conversion circuit Make voltage, and maintains preset second voltage value.
10. portable lamp as claimed in claim 5, which is characterized in that the current regulating circuit is suitable for fill when described When battery is in charged state and receives Lighting control instruction, reduce the operating current of the lighting circuit.
11. portable lamp as claimed in claim 10, which is characterized in that further include:Crossing detector circuit, with the electric current Circuit coupling is adjusted, is adapted to detect for the operating current of the lighting circuit, and feed back to the control circuit.
12. portable lamp as claimed in claim 5, which is characterized in that the input circuit be it is following any one:
Touch interface;
Voice unit;
Keypad;
Teleinstruction receiving unit.
CN201710149615.4A 2017-03-14 2017-03-14 Portable lamp and control method thereof CN108575030B (en)

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