CN205104967U - Mobile power supply - Google Patents
Mobile power supply Download PDFInfo
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- CN205104967U CN205104967U CN201520908430.3U CN201520908430U CN205104967U CN 205104967 U CN205104967 U CN 205104967U CN 201520908430 U CN201520908430 U CN 201520908430U CN 205104967 U CN205104967 U CN 205104967U
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Abstract
The utility model relates to a mobile power supply, including AC -DC converting circuit, DC -DC converting circuit, DC directly charge way, AC detection circuitry, battery protection circuit and output detection circuitry. DC -DC converting circuit's input is connected to the AC -DC converting circuit output, and directly charge way and battery charging circuit's input of DC is connected respectively to DC -DC converting circuit's output, and DC directly charges the output on way and connects USB output circuit, and the input of battery is connected to battery charging circuit's output, and the output connection USB output circuit of the input of battery discharge circuit, battery discharge circuit is connected to the battery output end. But this mobile power supply lug connection alternating current charges, and can be simultaneously charges for the inside battery of mobile power supply and external load, and inside battery and external load are charged and is accomplished the back auto -power -off, the convenience of customers use.
Description
Technical field
The utility model relates to power technique fields, more particularly, relates to a kind of portable power source.
Background technology
At present, the mancarried electronic aids such as mobile phone, panel computer, wearable device have been popularized, and facilitate the life of people.But along with the continuous lifting of electronic equipment performance, screen are increasing, cause the power consumption of electronic equipment to increase sharply.Do not have the prerequisite of breakthrough progress in current battery technology under, in order to solve the problem charged the phone under the environment not having alternating current charging, people adopt the portable power source that can store certain electricity to be electronic equipment charging as power supply.
Before portable power source uses, user needs portable power source to carry out pre-charged, charging modes many employings DC charging mode of current portable power source, namely direct current is produced by power supply adaptor, again with this direct current be portable power source charging, this charging modes makes user carry power supply adaptor, makes troubles to the use of user.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, provides a kind of portable power source.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of portable power source, comprise battery charger, battery, battery discharging circuit, USB output circuit and control circuit, also comprise AC-DC change-over circuit, DC-DC change-over circuit, the straight charging circuit of DC, AC testing circuit, battery protecting circuit and output detection circuit;
The output of described AC-DC change-over circuit connects the input of described DC-DC change-over circuit, the output of described DC-DC change-over circuit connects the input of the straight charging circuit of described DC and described battery charger respectively, the output of the straight charging circuit of described DC connects described USB output circuit, the output of described battery charger connects the input of described battery, the output of described battery connects the input of described battery discharging circuit, the output of described battery discharging circuit connects described USB output circuit, described DC-DC change-over circuit connects described control circuit by described AC testing circuit, described battery connects described control circuit by described battery protecting circuit, described USB output circuit connects described control circuit by described output detection circuit.
In portable power source described in the utility model, described DC-DC change-over circuit comprises control chip U1, transformer T3, diode D1, diode D4, resistance RS1, resistance RS2, wherein,
The output of described AC-DC change-over circuit connects the T1A end of described transformer T3 and the pin 1 of described control chip U1, described transformer T3 connects pin 5 and the pin 6 of described control chip U1, the pin 4 of described control chip U1 is connected pin 7 and the pin 8 of described control chip U1 with described resistance RS2 by described resistance RS1 in parallel, the pin 7 of described control chip U1 and pin 8 ground connection, the T1B end of described transformer T3 connects pin 1 and the pin 3 of described control chip U1, the T1B end of described transformer T3 exports direct current to vin1 and vin-1 by parallel connection described diode D1 and described diode D4,
Preferably, the model of described control chip U1 is YL2388.
In portable power source described in the utility model, the straight charging circuit of described DC comprises resistance R13, resistance R21, resistance R23, field effect transistor Q4, control chip U2 and control chip U3, wherein,
The pin 1 of described USB output circuit connects the pin 4 of described control chip U3 and the drain electrode of described field effect transistor Q4 by described resistance R13, the source ground of described field effect transistor Q4, the grid of described field effect transistor Q4 is by described resistance R23 ground connection, and the grid of described field effect transistor Q4 connects the pin 4 of described USB output circuit by described resistance R21;
When alternating current connected by described AC-DC change-over circuit, during described USB output circuit external load, described USB output circuit produces a high level by arriving the grid of described field effect transistor Q4 after described resistance R21 and described resistance R23 dividing potential drop, make described field effect transistor Q4 conducting, drag down the level of the pin 4 of described control chip U3 instantaneously, the pin 3 of described control chip U3 exports the U2B conducting that high level makes described control chip U2, pin 4 ground connection of described USB output circuit, described USB output circuit output current;
Preferably, the model of described control chip U2 is AO9926;
Preferably, the model of described control chip U3 is YL3022.
In portable power source described in the utility model, described battery charger comprises field effect transistor Q1, field effect transistor Q2, field effect transistor Q3, control chip U2, control chip U3 and inductance L 3;
Described field effect transistor Q1 is connected the output of described DC-DC change-over circuit with the drain electrode of described field effect transistor Q3, described field effect transistor Q1 is connected the pin 2 of described control chip U3 with the grid of described field effect transistor Q3, described field effect transistor Q1 is connected the source electrode of described field effect transistor Q2 and the pin 1 of described control chip U3 with the source electrode of described field effect transistor Q3, the grid of described field effect transistor Q2 connects the pin 5 of described control chip U3, the drain electrode of described field effect transistor Q2 connects the U2A of the U2 of described control chip, the U2A of the U2 of described control chip connects the pin 6 of described control chip U3, the drain electrode of described field effect transistor Q2 connects the positive pole of described battery by described inductance L 3.
In portable power source described in the utility model, described battery protecting circuit comprises resistance R24, field effect transistor Q2, control chip U2 and control chip U3, wherein,
The negative pole of described battery connects the pin 9 of described control chip U3 by described resistance R24, after the pin 9 of described control chip U3 detects the low level transmitted through described resistance R24, the U2B of described field effect transistor Q2 and described control chip U2 quits work, and turns off the charging current of described battery.
In portable power source described in the utility model, described battery discharging circuit comprises resistance R13, resistance R21, resistance R23, inductance L 3, field effect transistor Q2, field effect transistor Q4, control chip U2 and control chip U3, wherein,
The pin 1 of described USB output circuit connects the pin 4 of described control chip U3 and the drain electrode of described field effect transistor Q4 by described resistance R13, the source ground of described field effect transistor Q4, the grid of described field effect transistor Q4 is by described resistance R23 ground connection, the grid of described field effect transistor Q4 connects the pin 4 of described USB output circuit by described resistance R21, the pin 6 of described control chip U3 connects the U2A of described control chip U2, the pin 5 of described control chip U3 connects the grid of described field effect transistor Q2, the drain electrode of described field effect transistor Q2 connects the U2A of described control chip U2, the drain electrode of described field effect transistor Q2 connects the positive pole of described battery by described inductance L 3, the U2A of described control chip U2 connects the positive pole of described battery by described inductance L 3,
When described AC-DC change-over circuit inputs without alternating current, when described USB output circuit connects external load, described USB output circuit produces a high level by arriving the grid of described field effect transistor Q4 after described resistance R21 and described resistance R23 dividing potential drop, make described field effect transistor Q4 conducting, drag down the level of the pin 4 of described control chip U3 instantaneously, wake up by described control chip U3, the circuit of the U2A composition of described field effect transistor Q2 and described control chip U2, export at the pin 3 of described control chip U3 the U2B conducting that high level makes described control chip U2 simultaneously, pin 4 ground connection of described USB output circuit, described USB output circuit exports direct current.
In portable power source described in the utility model, described output detection circuit comprises resistance R14, resistance R18, resistance R19, electric capacity C19, control chip U2 and control chip U3, wherein,
The pin 3 of described control chip U3 is by described resistance R14 in parallel and described electric capacity C19 ground connection, described control chip U3 pin 3 connects the U2B of described control chip U2, the pin 7 of described control chip U3 is by described resistance R18 and described resistance 19 ground connection, and the U2B of described control chip U2 is by described resistance R19 ground connection;
When the output current of described USB output circuit is less than threshold current, described resistance R19 produces voltage and reduces the pin 7 being transferred to described control chip U3 through described resistance R18, pin 3 output low level of described control chip U3 makes the U2A of described control chip U2 turn off, and described USB output circuit turns off output current;
Preferably, the span of described threshold current is 0mA to 200mA.
In portable power source described in the utility model, described AC testing circuit comprises resistance R20, resistance R22 and control chip U3, wherein, and 2
The output of described DC-DC change-over circuit arranges and detects level sampling point Vin, and the pin 8 of described control chip U3 is by described resistance R22 ground connection, and the pin 8 of described control chip U3 connects described detection level sampling point Vin by described resistance R20; ,
The pin 8 of described control chip U3 detects the level of described detection level sampling point Vin by described resistance R20 and described resistance R22, when described detection level sampling point Vin is high level, be judged as that AC inputs; When described detection level sampling point Vin is low level, be judged as inputting without AC.
In portable power source described in the utility model, described portable power source also comprises indicator light, and described control circuit connects described indicator light; When described USB output circuit is non-loaded, battery capacity indication lamp goes out entirely; When described USB output circuit has load, described battery capacity indication lamp Chang Liang.
Preferably, described AC-DC change-over circuit is rectifier circuit.
Implement AAA of the present utility model, there is following beneficial effect: portable power source of the present utility model comprises AC-DC change-over circuit, DC-DC change-over circuit, the straight charging circuit of DC, AC testing circuit, battery protecting circuit and output detection circuit; AC-DC change-over circuit output connects the input of DC-DC change-over circuit, the output of DC-DC change-over circuit connects the input of the straight charging circuit of DC and battery charger respectively, the output of the straight charging circuit of DC connects USB output circuit, the output of battery charger connects the input of battery, the output of battery connects the input of battery discharging circuit, and the output of battery discharging circuit connects USB output circuit.Portable power source of the present utility model realizes the integration of power supply adaptor and portable power source; user can directly connect alternating current and charge; and can be external connected electronic equipment and the charging of portable power source internal cell simultaneously; electric current is cut off after external electronic equipment and portable power source internal cell are full of electricity, can proterctive equipment and saves energy.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the utility model portable power source;
Fig. 2 is the circuit diagram of the preferred embodiment DC-DC change-over circuit of the utility model portable power source;
Fig. 3 is the circuit diagram of the preferred embodiment charging circuit of the utility model portable power source.
Embodiment
As shown in Figure 1, preferably execute in example at portable power source of the present utility model, comprise battery charger, battery, battery discharging circuit, USB output circuit and control circuit, also comprise AC-DC change-over circuit, DC-DC change-over circuit, the straight charging circuit of DC, AC testing circuit, battery protecting circuit and output detection circuit;
The output of AC-DC change-over circuit connects the input of DC-DC change-over circuit, the output of DC-DC change-over circuit connects the input of the straight charging circuit of DC and battery charger respectively, the output of the straight charging circuit of DC connects USB output circuit, the output of battery charger connects the input of battery, the output of battery connects the input of battery discharging circuit, the output of battery discharging circuit connects USB output circuit, DC-DC change-over circuit is by AC testing circuit connection control circuit, battery is by battery protecting circuit connection control circuit, USB output circuit is by output detection circuit connection control circuit.
Below respectively each part of the portable power source of point utility model is made an explanation.
As shown in Figure 2, this part circuit realiration alternating current is to galvanic conversion, and high voltage direct current is to battery and the galvanic conversion of the required charging of external electronic device.
In the portable power source of this preferred embodiment, DC-DC change-over circuit comprises control chip U1, transformer T3, diode D1, diode D4, resistance RS1, resistance RS2, wherein,
The T1A end of the output connection transformer T3 of AC-DC change-over circuit and the pin 1 of control chip U1, the pin 5 of transformer T3 connection control chip U1 and pin 6, the pin 4 of control chip U1 passes through pin 7 and the pin 8 of parallel resistance RS1 and resistance RS2 connection control chip U1, the pin 7 of control chip U1 and pin 8 ground connection, the T1B of transformer T3 holds pin 1 and the pin 3 of connection control chip U1, and the T1B end of transformer T3 exports direct current to vin1 and vin-1 by parallel diode D1 and diode D4; Preferably, the resistance of resistance RS1 is 1 Ω, and the resistance of resistance RS2 is 1.5 Ω.
Preferably, AC-DC change-over circuit input connect alternating current voltage span be 100V to 240V.
Preferably, the model of control chip U1 is YL2388, and the pin 1 of control chip U1 is VDD, and pin 2 is COMP, and pin 3 is INV, and pin 4 is CS, and pin 5 is DATE, and pin 6 is DATE, and pin 7 is GND, and pin 8 is GND.
The output of AC-DC change-over circuit passes through the pin 1 of series resistance R3 and R4 connection control chip U1, connect at AC-DC change-over circuit and exchange some moment, for control chip U1 provides starting resistor, the output of AC-DC change-over circuit passes through the T1A of inductance L 1 connection transformer T-3.
Preferably, the resistance of resistance R3 is 510K Ω, and the resistance of resistance R4 is 510K Ω, and inductance L 1 is 100uH.AC-DC change-over circuit output, by electric capacity C1, electric capacity C3 ground connection, plays filter action.Preferably, the size of electric capacity C1 is 6.8uF, and the size of electric capacity C3 is 6.8uF.
The T1B of transformer T-3 is by resistance R6 and resistance R7 ground connection, the T1B of transformer T-3 passes through the pin 3 of resistance R6 connection control chip, the T1B of transformer T-3 passes through the pin 1 of diode D2 connection control chip, the pin 1 of control chip is by electric capacity C5 ground connection, the resistance of resistance R6 is 22K Ω, the resistance of resistance R7 is 3.3K Ω, and electric capacity C5 is 0.1uF.
The pin 5 of control chip U1 and pin 6 are connected one end of parallel resistance R1 and electric capacity C4 by diode D3, the T1B of the other end connection transformer T-3 of parallel resistance R1 and electric capacity C4.Preferably, electric capacity C4 is 100pF, and the resistance of resistance R1 is 100K Ω.
Resistance R2 and electric capacity C2 is in parallel with diode D1 after connecting, and electric capacity C6, C7, C8, C10 and resistance R5 are connected to vin1 and vin-1 two ends, play filter action, and diode D1 connects vin1 by inductance L 2.Preferably, the resistance of resistance R2 is 100 Ω, and the resistance of resistance R5 is 1K Ω, and electric capacity C2 is 1000pF, and electric capacity C6 is 470uF, and electric capacity C7 is 1000uF, and electric capacity C8 is 470uF, and electric capacity C10 is 0.1uF.
Preferably, safety electric capacity CY1 is provided with in circuit.
As shown in Figure 3, in the portable power source of this preferred embodiment, the straight charging circuit of DC comprises resistance R13, resistance R21, resistance R23, field effect transistor Q4, control chip U2 and control chip U3, this not circuit can realize the direct charging of portable power source of the present utility model to external electronic equipment, wherein
The pin 1 of USB output circuit is by the pin 4 of resistance R13 connection control chip U3 and the drain electrode of field effect transistor Q4, the source ground of field effect transistor Q4, the grid of field effect transistor Q4 is by resistance R23 ground connection, and the grid of field effect transistor Q4 connects the pin 4 of USB output circuit by resistance R21;
When alternating current connected by AC-DC change-over circuit, during USB output circuit external load, USB output circuit produces a high level by arriving the grid of field effect transistor Q4 after resistance R21 and resistance R23 dividing potential drop, make field effect transistor Q4 conducting, drag down the level of the pin 4 of control chip U3 instantaneously, the pin 3 of control chip U3 exports the U2B conducting that high level makes control chip U2, pin 4 ground connection of USB output circuit, USB output circuit output current;
Preferably, the resistance of resistance R13 is 1M Ω, and the resistance of resistance R21 is 100K Ω, and the resistance of resistance R23 is 100K Ω.Electric capacity C11, C12 connect positive pole and the ground of battery, play filter action.
The pin 15 of control chip U3 is by electric capacity C15 ground connection, and the pin 15 of control chip U3 is by resistance R10 ground connection, and the pin 15 of control chip U3 connects the positive pole of battery by resistance R8.
Preferably, external load is the electronic equipments such as mobile phone, panel computer, MP3, MP4, wearable device.
Preferably, the model of control chip U2 is AO9926, and inside has N-MOS pipe.
Preferably, the model of control chip U3 is YL3022, and pin 1 is VDD, pin 2 is CH1, and pin 3 is 5_VEN, and pin 4 is AUTO_ON, pin 5 is PWM_P, and pin 6 is PWM_N, and pin 7 is I_SET, pin 8 is Vin, and pin 9 is LED4, and pin 10 is LED1, pin 11 is LED2, and pin 12 is LAMP12, and pin 13 is COM, pin 14 is CH_EN, and pin 15 is BATV, and pin 16 is GND.
In the portable power source of this preferred embodiment, battery charger comprises field effect transistor Q1, field effect transistor Q2, field effect transistor Q3, control chip U2, control chip U3 and inductance L 3, and this partial circuit realizes the charging to portable power source internal cell of the present utility model.
Field effect transistor Q1 is connected the output of DC-DC change-over circuit with the drain electrode of field effect transistor Q3, the pin 2 of the grid connection control chip U3 of field effect transistor Q1 and field effect transistor Q3, field effect transistor Q1 is connected the source electrode of field effect transistor Q2 and the pin 1 of control chip U3 with the source electrode of field effect transistor Q3, the pin 5 of the grid connection control chip U3 of field effect transistor Q2, the U2A of the U2 of the drain electrode connection control chip of field effect transistor Q2, the drain electrode of the pin 6, field effect transistor Q2 of the U2A connection control chip U3 of the U2 of control chip connects the positive pole of battery by inductance L 3.
In the portable power source of this preferred embodiment, battery protecting circuit comprises resistance R24, field effect transistor Q2, control chip U2 and control chip U3, and after battery is full of, this part circuit can turn off charging current, protection battery, saves energy.Wherein,
The negative pole of battery passes through the pin 9 of resistance R24 connection control chip U3, and after the pin 9 of control chip U3 detects the low level transmitted through resistance R24, the U2B of field effect transistor Q2 and control chip U2 quits work, and turns off the charging current of battery.
Preferably, the resistance of resistance R24 is 1K Ω.
In the portable power source of this preferred embodiment, when user needs the internal cell of practical portable power source to be electronic equipment charging, use battery discharging circuit.Battery discharging circuit comprises resistance R13, resistance R21, resistance R23, inductance L 3, field effect transistor Q2, field effect transistor Q4, control chip U2 and control chip U3, and wherein, preferably, inductance L 3 is 4.7uH.
The pin 1 of USB output circuit is by the pin 4 of resistance R13 connection control chip U3 and the drain electrode of field effect transistor Q4, the source ground of field effect transistor Q4, the grid of field effect transistor Q4 is by resistance R23 ground connection, the grid of field effect transistor Q4 connects the pin 4 of USB output circuit by resistance R21, the U2A of the pin 6 connection control chip U2 of control chip U3, the pin 5 of control chip U3 connects the grid of field effect transistor Q2, the U2A of the drain electrode connection control chip U2 of field effect transistor Q2, the drain electrode of field effect transistor Q2 connects the positive pole of battery by inductance L 3, the U2A of control chip U2 connects the positive pole of battery by inductance L 3,
When AC-DC change-over circuit inputs without alternating current, when USB output circuit connects external load, USB output circuit produces a high level by arriving the grid of field effect transistor Q4 after resistance R21 and resistance R23 dividing potential drop, make field effect transistor Q4 conducting, drag down the level of the pin 4 of control chip U3 instantaneously, wake the circuit be made up of the U2A of control chip U3, field effect transistor Q2 and control chip U2 up, export at the pin 3 of control chip U3 the U2B conducting that high level makes control chip U2 simultaneously, pin 4 ground connection of USB output circuit, USB output circuit exports direct current.
After the electronic equipment that user is used is full of electricity, output detection circuit can turn off output current, protection external connected electronic equipment, saves energy, and physical circuit is as follows:
In the portable power source of this preferred embodiment, output detection circuit comprises resistance R14, resistance R18, resistance R19, electric capacity C19, control chip U2 and control chip U3, wherein,
The pin 3 of control chip U3 is by parallel resistance R14 and electric capacity C19 ground connection, and the pin 7 of the U2B of control chip U3 pin 3 connection control chip U2, control chip U3 is by resistance R18 and resistance 19 ground connection, and the U2B of control chip U2 is by resistance R19 ground connection;
When the output current of USB output circuit is less than threshold current, resistance R19 produces voltage and reduces the pin 7 being transferred to control chip U3 through resistance R18, the low level that the pin 3 of control chip U3 exports makes the U2A of control chip U2 turn off, and USB output circuit turns off output current;
Preferably, the resistance of resistance R14 is 10K Ω, and the resistance of resistance R18 is 1K Ω.
Preferably, the span of threshold current is 0mA to 200mA.When threshold current is 100mA, when the output current of USB output circuit is less than 100mA, the pressure drop that resistance R19 produces is 5.5mV, now level is by being transferred to the pin 7 of control circuit U3 after resistance R18 and electric capacity C21 filtering, the low level that the pin 3 of control chip exports makes the N-MOS pipe of the U2A inside of control circuit U2 turn off, the ground wire of USB output circuit is cut off, and output current is turned off.
Such as; when threshold circuit is 100mA; portable power source is being that a mobile phone charges; along with being full of gradually of battery of mobile phone, charging current reduces gradually, when charging current is less than 100mA; illustrate that battery of mobile phone is full of substantially; now can stop output current, so both can protect battery of mobile phone, also can saves energy.Certainly, for making charging mobile phone battery fuller, threshold current can be turned down.
In the portable power source of this preferred embodiment, AC testing circuit comprises resistance R20, resistance R22 and control chip U3, wherein,
The output of DC-DC change-over circuit arranges and detects level sampling point Vin, and the pin 8 of control chip U3 is by resistance R22 ground connection, and the pin 8 of control chip U3 connects detection level sampling point Vin by resistance R20; ,
The pin 8 of control chip U3 detects the level of level sampling point Vin by resistance R20 and resistance R22, when detection level sampling point Vin is high level, be judged as that AC inputs; When detection level sampling point Vin is low level, be judged as inputting without AC.
The resistance of resistance R20 is 1K Ω, and the resistance of resistance R22 is 1K Ω.
In the portable power source of this preferred embodiment, portable power source also comprises indicator light, and control circuit connects indicator light; When USB output circuit is non-loaded, battery capacity indication lamp goes out entirely; When USB output circuit has load, battery capacity indication lamp Chang Liang.
LED 1 one end is connected to the pin 11 of control chip U3, and the other end connects pin 13 by resistance R17, and luminous voltage is 4V; LED 2 one end is connected to the pin 11 of control chip U3, and the other end connects pin 13 by resistance R17, and luminous voltage is 3.8V; LED 3 one end is connected to the pin 10 of control chip U3, and the other end connects pin 13 by resistance R17, and luminous voltage is 3.6V; LED 4 one end is connected to the pin 10 of control chip U3, and the other end connects pin 13 by resistance R17, and luminous voltage is 3V.The pin 13 of control chip U3 is by resistance R16 ground connection.
Preferably, the resistance of resistance R16 is 3.3K Ω.
Preferably, AC-DC change-over circuit is rectifier circuit.
USB output circuit is USB standard port, and pin 1 is positive pole, and pin 2 is D+, and pin 3 is D-, and pin 4 is GND.
Above embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement accordingly, can not limit protection range of the present utility model.All equalizations done with the utility model right change and modify, and all should belong to the covering scope of the utility model claim.
Claims (10)
1. a portable power source, comprise battery charger (04), battery (05), battery discharging circuit (06), USB output circuit (07) and control circuit (09), it is characterized in that, also comprise AC-DC change-over circuit (01), DC-DC change-over circuit (02), the straight charging circuit of DC (03), AC testing circuit (08), battery protecting circuit (11) and output detection circuit (12);
The output of described AC-DC change-over circuit (01) connects the input of described DC-DC change-over circuit (02), the output of described DC-DC change-over circuit (02) connects the input of the straight charging circuit of described DC (03) and described battery charger (04) respectively, the output of the straight charging circuit of described DC (03) connects described USB output circuit (07), the output of described battery charger (04) connects the input of described battery (05), the output of described battery (05) connects the input of described battery discharging circuit (06), the output of described battery discharging circuit (06) connects described USB output circuit (07), described DC-DC change-over circuit (02) connects described control circuit (09) by described AC testing circuit (08), described battery (05) connects described control circuit (09) by described battery protecting circuit (11), described USB output circuit (07) connects described control circuit (09) by described output detection circuit (12).
2. portable power source according to claim 1, is characterized in that, described DC-DC change-over circuit (02) comprises control chip U1, transformer T3, diode D1, diode D4, resistance RS1, resistance RS2, wherein,
The output of described AC-DC change-over circuit (01) connects the T1A end of described transformer T3 and the pin 1 of described control chip U1, described transformer T3 connects pin 5 and the pin 6 of described control chip U1, the pin 4 of described control chip U1 is connected pin 7 and the pin 8 of described control chip U1 with described resistance RS2 by described resistance RS1 in parallel, the pin 7 of described control chip U1 and pin 8 ground connection, the T1B end of described transformer T3 connects pin 1 and the pin 3 of described control chip U1, the T1B end of described transformer T3 exports direct current to vin1 and vin-1 by parallel connection described diode D1 and described diode D4,
The model of described control chip U1 is YL2388.
3. portable power source according to claim 2, is characterized in that, the straight charging circuit of described DC (03) comprises resistance R13, resistance R21, resistance R23, field effect transistor Q4, control chip U2 and control chip U3, wherein,
The pin 1 of described USB output circuit (07) connects the pin 4 of described control chip U3 and the drain electrode of described field effect transistor Q4 by described resistance R13, the source ground of described field effect transistor Q4, the grid of described field effect transistor Q4 is by described resistance R23 ground connection, and the grid of described field effect transistor Q4 connects the pin 4 of described USB output circuit (07) by described resistance R21;
When described AC-DC change-over circuit (01) connects alternating current, during described USB output circuit (07) external load, the high level that described USB output circuit (07) produces is by arriving the grid of described field effect transistor Q4 after described resistance R21 and described resistance R23 dividing potential drop, make described field effect transistor Q4 conducting, drag down the level of the pin 4 of described control chip U3 instantaneously, the pin 3 of described control chip U3 exports the U2B conducting that high level makes described control chip U2, pin 4 ground connection of described USB output circuit (07), described USB output circuit (07) output current,
The model of described control chip U2 is AO9926;
The model of described control chip U3 is YL3022.
4. portable power source according to claim 2, is characterized in that, described battery charger (04) comprises field effect transistor Q1, field effect transistor Q2, field effect transistor Q3, control chip U2, control chip U3 and inductance L 3;
Described field effect transistor Q1 is connected the output of described DC-DC change-over circuit (02) with the drain electrode of described field effect transistor Q3, described field effect transistor Q1 is connected the pin 2 of described control chip U3 with the grid of described field effect transistor Q3, described field effect transistor Q1 is connected the source electrode of described field effect transistor Q2 and the pin 1 of described control chip U3 with the source electrode of described field effect transistor Q3, the grid of described field effect transistor Q2 connects the pin 5 of described control chip U3, the drain electrode of described field effect transistor Q2 connects the U2A of the U2 of described control chip, the U2A of the U2 of described control chip connects the pin 6 of described control chip U3, the drain electrode of described field effect transistor Q2 connects the positive pole of described battery (05) by described inductance L 3.
5. portable power source according to claim 4, is characterized in that, described battery protecting circuit (11) comprises resistance R24, field effect transistor Q2, control chip U2 and control chip U3, wherein,
The negative pole of described battery (05) connects the pin 9 of described control chip U3 by described resistance R24, after the pin 9 of described control chip U3 detects the low level transmitted through described resistance R24, the U2B of described field effect transistor Q2 and described control chip U2 quits work, and turns off the charging current of described battery (05).
6. portable power source according to claim 1, it is characterized in that, described battery discharging circuit (06) comprises resistance R13, resistance R21, resistance R23, inductance L 3, field effect transistor Q2, field effect transistor Q4, control chip U2 and control chip U3, wherein
The pin 1 of described USB output circuit (07) connects the pin 4 of described control chip U3 and the drain electrode of described field effect transistor Q4 by described resistance R13, the source ground of described field effect transistor Q4, the grid of described field effect transistor Q4 is by described resistance R23 ground connection, the grid of described field effect transistor Q4 connects the pin 4 of described USB output circuit (07) by described resistance R21, the pin 6 of described control chip U3 connects the U2A of described control chip U2, the pin 5 of described control chip U3 connects the grid of described field effect transistor Q2, the drain electrode of described field effect transistor Q2 connects the U2A of described control chip U2, the drain electrode of described field effect transistor Q2 connects the positive pole of described battery (05) by described inductance L 3, the U2A of described control chip U2 connects the positive pole of described battery (05) by described inductance L 3,
When described AC-DC change-over circuit (01) inputs without alternating current, when described USB output circuit (07) connects external load, the high level that described USB output circuit (07) produces is by arriving the grid of described field effect transistor Q4 after described resistance R21 and described resistance R23 dividing potential drop, make described field effect transistor Q4 conducting, drag down the level of the pin 4 of described control chip U3 instantaneously, wake up by described control chip U3, the circuit of the U2A composition of described field effect transistor Q2 and described control chip U2, export at the pin 3 of described control chip U3 the U2B conducting that high level makes described control chip U2 simultaneously, pin 4 ground connection of described USB output circuit (07), described USB output circuit (07) exports direct current.
7. portable power source according to claim 1, is characterized in that, described output detection circuit (12) comprises resistance R14, resistance R18, resistance R19, electric capacity C19, control chip U2 and control chip U3, wherein,
The pin 3 of described control chip U3 is by described resistance R14 in parallel and described electric capacity C19 ground connection, described control chip U3 pin 3 connects the U2B of described control chip U2, the pin 7 of described control chip U3 is by described resistance R18 and described resistance R19 ground connection, and the U2B of described control chip U2 is by described resistance R19 ground connection;
When the output current of described USB output circuit (07) is less than threshold current, described resistance R19 produces voltage and reduces the pin 7 being transferred to described control chip U3 through described resistance R18, pin 3 output low level of described control chip U3 makes the U2A of described control chip U2 turn off, and described USB output circuit (07) turns off output current;
The span of described threshold current is 0mA to 200mA.
8. portable power source according to claim 1, is characterized in that, described AC testing circuit (08) comprises resistance R20, resistance R22 and control chip U3, wherein,
The output of described DC-DC change-over circuit (02) arranges and detects level sampling point Vin, the pin 8 of described control chip U3 is by described resistance R22 ground connection, and the pin 8 of described control chip U3 connects described detection level sampling point Vin by described resistance R20;
The pin 8 of described control chip U3 detects the level of described detection level sampling point Vin by described resistance R20 and described resistance R22, when described detection level sampling point Vin is high level, be judged as that AC inputs; When described detection level sampling point Vin is low level, be judged as inputting without AC.
9. portable power source according to claim 1, is characterized in that, described portable power source also comprises indicator light (10), and described control circuit (09) connects described indicator light (10); When described USB output circuit (07) is non-loaded, battery capacity indication lamp goes out entirely; When described USB output circuit (07) has load, described battery capacity indication lamp Chang Liang.
10. portable power source according to claim 1, is characterized in that, described AC-DC change-over circuit (01) is rectifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520908430.3U CN205104967U (en) | 2015-11-13 | 2015-11-13 | Mobile power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520908430.3U CN205104967U (en) | 2015-11-13 | 2015-11-13 | Mobile power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361254A (en) * | 2018-12-22 | 2019-02-19 | 东莞市壹带电源科技有限公司 | Intelligent charger and mobile power source one full of the quick charger automatically shut down |
| CN110649311A (en) * | 2019-09-04 | 2020-01-03 | 上海智汇电器有限公司 | Battery pack |
-
2015
- 2015-11-13 CN CN201520908430.3U patent/CN205104967U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361254A (en) * | 2018-12-22 | 2019-02-19 | 东莞市壹带电源科技有限公司 | Intelligent charger and mobile power source one full of the quick charger automatically shut down |
| CN110649311A (en) * | 2019-09-04 | 2020-01-03 | 上海智汇电器有限公司 | Battery pack |
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Effective date of registration: 20181031 Address after: 412000 Hunan Zhuzhou Chaling County town of Huan Town neighborhood committee Patentee after: Liu Yuqin Address before: 310011 Zhongtian West City 4-308, Yuhang Road, Gongshu District, Hangzhou, Zhejiang Patentee before: Liang Yongqin |
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