CN204794134U - Way of charging soon of mobile device lithium cell - Google Patents
Way of charging soon of mobile device lithium cell Download PDFInfo
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- CN204794134U CN204794134U CN201520240619.XU CN201520240619U CN204794134U CN 204794134 U CN204794134 U CN 204794134U CN 201520240619 U CN201520240619 U CN 201520240619U CN 204794134 U CN204794134 U CN 204794134U
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Abstract
The utility model relates to a way of charging soon of mobile device lithium cell, include: charging and discharging circuit, lithium cell, sampling circuit, singlechip, drive circuit, filter circuit, supply circuit, button and pilot lamp, drive circuit, sampling circuit and lithium cell all are connected with charging and discharging circuit, drive circuit, adoption circuit, supply circuit, filter circuit, button and pilot lamp all are connected with the singlechip, lithium cell, charging and discharging circuit and singlechip all are connected with supply circuit, filter circuit and charging and discharging circuit still are connected with the adapter of outside, charging and discharging circuit still is connected with the mobile device of outside. The utility model discloses a discharge rate that fills that discharge voltage adds the way of charging is quickly filled in the increase, supports the multiple standard of filling soon.
Description
Technical field
The utility model relates to charging quickly road technique field, particularly relates to a kind of charging quickly road of mobile device lithium battery.
Background technology
Nowadays portable power source is a kind of portable charger integrating power supply and charge function, can charge whenever and wherever possible or standby power to digital equipments such as mobile phones.General by lithium battery as energy-storage units, convenient to use.For the common portable power source that capacity is 20000mAh, could be full of with 13 hours, so be necessary to develop a kind of charging quickly road of shortening mobile device (portable power source, mobile phone, flat board, notebook etc.) the lithium cell charging time.Accelerate the charging rate of mobile device lithium battery, just need to improve charge power, and the method improving charge power has two kinds: one improves charging current, and another kind improves charging voltage.When charging voltage is 5V, if improve charge power by improving charging current, when the cable that use impedance is higher, due to the reason of line loss, the voltage arrived on mobile device mainboard can be lower, also just has no idea to reach higher charging current (being generally restricted to 1.8A).So, if charge power will be improved further, just first must improve charging voltage, the QuickCharge2.0 of such as high pass fills standard soon, the 20V of Apple fills standard soon.
At present, the topological structure on charging quickly road mainly adopts the heavy DC converter of a phase one, and its defect is: the ripple of output voltage and output current is comparatively large, and charge power is less, and reliability is lower; In addition, the direct voltage used in communication process is generally produced by DAC (digital-to-analogue conversion) module of single-chip microcomputer, and cost is higher.
Utility model content
The utility model discloses a kind of charging quickly road of mobile device lithium battery, comprising: charge-discharge circuit, lithium battery, sample circuit, single-chip microcomputer, drive circuit, filter circuit, power supply circuits, button and indicator light; Described drive circuit, sample circuit are all connected with charge-discharge circuit with lithium battery, described drive circuit, employing circuit, power supply circuits, filter circuit, button are all connected with single-chip microcomputer with indicator light, and described lithium battery, charge-discharge circuit are all connected with power supply circuits with single-chip microcomputer; Described filter circuit and charge-discharge circuit are also connected with the adapter of outside, and described charge-discharge circuit is also connected with the mobile device of outside.
Preferably, described charge-discharge circuit is heterogeneous multiple DC converter.
Preferably, described power supply circuits comprise pressurizer, MOSFET, the first diode, the second diode and the 3rd diode, one end of described pressurizer is all connected with charge-discharge circuit with one end of MOSFET, the other end of described voltage-stabiliser tube connects the positive pole of the first diode, the other end of MOSFET connects the positive pole of the second diode, described lithium battery connects the positive pole of the 3rd diode, and the negative pole of described first diode, the negative pole of the second diode are all connected with single-chip microcomputer with the negative pole of the 3rd diode.
Compared to prior art, the beneficial effects of the utility model are:
The utility model accelerates the charge/discharge rates on charging quickly road by increasing charging/discharging voltage, supports multiplely to fill standard soon.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of theory diagram of charging quickly road of mobile device lithium battery;
Fig. 2 is a kind of circuit diagram of an embodiment of charging quickly road of mobile device lithium battery.
Embodiment
The utility model to be described in further detail below in conjunction with drawings and Examples for the ease of it will be appreciated by those skilled in the art that.
As shown in Figure 1, this figure is a kind of theory diagram of charging quickly road of mobile device lithium battery, the charge/discharge rates on charging quickly road is accelerated by increasing charging/discharging voltage, support multiplely to fill standard soon, the QuickCharge2.0 of such as high pass fills standard soon, comprising: charge-discharge circuit, lithium battery, sample circuit, single-chip microcomputer, drive circuit, filter circuit, power supply circuits, button and indicator light; Described drive circuit, sample circuit are all connected with charge-discharge circuit with lithium battery, described drive circuit, employing circuit, power supply circuits, filter circuit, button are all connected with single-chip microcomputer with indicator light, and described lithium battery, charge-discharge circuit are all connected with power supply circuits with single-chip microcomputer; Described filter circuit and charge-discharge circuit are also connected with the adapter of outside, and described charge-discharge circuit is also connected with the mobile device of outside.
As shown in Figure 2, this figure is a kind of circuit diagram of an embodiment of charging quickly road of mobile device lithium battery, for support the QuickCharge2.0 of high pass soon the standard of filling be described, charge-discharge circuit adopts the double DC converter of two-phase, the ripple with output voltage and output current is little, charge power is large, high reliability.The components and parts of composition charge-discharge circuit comprise: charging inlet J1, electric discharge interface J2, diode D1, D2, D3, P type MOSFETQ1, Q5, N-type MOSFETQ2, Q7, Q6, inductance L 1, L2, electric capacity C1, C2, lithium battery BAT1, resistance R2, R10, R12, R16, R20, R21, R6, R7, R18, R19, R17, R1, R5, R14, R11, triode Q3, Q8, Q4.Charging inlet J1 is used for Payload attach fitting; Electric discharge interface J2 is for connecting mobile device; The charging quickly path loss that diode D1 can prevent the positive and negative reversal connection of charging inlet J1 and cause is bad; During electric discharge, during the dead band of PWM ripple, diode D2, D3 can be used as the path of electric current, prevent from damaging P type MOSFETQ1, Q5; P type MOSFETQ1, Q5 and N-type MOSFETQ2, Q7 are used for the switch element of charge-discharge circuit, and N-type MOSFETQ6 is used for switch discharge; Inductance L 1, L2 are used for the energy-storage travelling wave tube of charge-discharge circuit; Electric capacity C1, C2 are used for energy storage and the filter element of charge-discharge circuit; Resistance R2, R10, R12, triode Q3, resistance R16, R20, R21, triode Q8 are for driving P type MOSFETQ1, Q5; Resistance R6, R7, R18, R19 are used for driving N type MOSFETQ2, Q7; Resistance R17 is used for driving N type MOSFETQ6; When adapter is connected with charging inlet J1, resistance R1, R5 are used for waking single-chip microcomputer up and start charging; When mobile device is connected with electric discharge interface J2, resistance R14, triode Q4 are used for waking single-chip microcomputer up and start electric discharge; Resistance R11 be used for connecting analog ground and digitally.Described charging quickly road utilizes complementary High-Accuracy PWM (pulse width modulation) ripple of the multichannel of band phase shift to drive heterogeneous multiple DC converter, there is inductance volume little, the ripple of output voltage and output current is little, and charge power is large, high reliability; Described charging quickly road utilizes the PWM module of single-chip microcomputer to produce direct voltage, and compare DAC (analog-to-digital conversion) the module generates direct current voltage utilizing single-chip microcomputer, its cost is lower.
As shown in Figure 2, lithium battery BAT1 can be a joint, also can be formed in parallel by more piece, the storage of electrical energy when charging, the release electric energy when discharging.
As shown in Figure 2, sample circuit gathers charging/discharging voltage, cell voltage, battery current and battery temperature, comprising: resistance R13, R15, R3, R8, R9, R4, R28, electric capacity C5, C3, C4, thermistor NTC.Resistance R13, R15, electric capacity C5 are used for sampling to charging/discharging voltage; Resistance R3, R8, electric capacity C3 are used for battery voltage sampling; Resistance R9, R4, electric capacity C4 are used for sampling to battery current; Resistance R28, thermistor NTC are used for sampling to battery temperature.These sampled signals will be used for PWM and control or software and hardware protection.
As shown in Figure 1, single-chip microcomputer U1 has the High-Accuracy PWM module of 4 tunnel complementations, wherein, PWM0_A, PWM0_B is the complementary PWM (PWM0) in the 0th tunnel, PWM1_A, PWM1_B is the complementary PWM (PWM1) in the 1st tunnel, PWM2_A is the A channel of the complementary PWM (PWM2) in the 2nd tunnel, PWM3_A is the A channel of the complementary PWM (PWM3) in the 3rd tunnel, PWM0 and PWM1 is with 180 ° of phase differences, same duty cycle controls charge-discharge circuit, classification Given current controller is carried out during charging, Isobarically Control is carried out during electric discharge, PWM2_A with PWM3_A is connected with filter circuit, produce the mutual required direct voltage with adapter.Single-chip microcomputer U1 has OCP (overcurrent protection) module and OVP (overvoltage protection) module, when battery current and charging/discharging voltage excessive time, can hardware protection be carried out.Single-chip microcomputer U1 has multichannel ADC (analog-to-digital conversion) module, and ADC module is connected with sample circuit, controls and software protection for PWM; ADC module is also connected with D+ with D-of mobile device, for identifying to the voltage of charging of mobile devices.Resistance R25, pressurizer U3, electric capacity C10 are for generation of the reference voltage of OCP module, OVP module and ADC module.
As illustrated in fig. 1 and 2, filter circuit comprises resistance R26, R29, electric capacity C9, C11, resistance R26, electric capacity C9 carries out filtering to PWM3_A, output is connected with the D+ of adapter, resistance R29, electric capacity C11 carries out filtering to PWM2_A, output is connected with the D-of adapter, by adjusting the duty ratio of PWM3_A and PWM2_A, any direct voltage within single-chip microcomputer high level voltage can be produced, soon standard is filled for high pass QuickCharge2.0, the direct voltage of D+ and D-can be 0V, 0.6V or 3.3V, adapter identification D+, the direct voltage of D-, thus export corresponding charging voltage.
As illustrated in fig. 1 and 2, power supply circuits are made up of three branch roads, comprise pressurizer U2, MOSFETQ9, diode D8, diode D9 and diode D10, described one end of pressurizer U2 is all connected with charge-discharge circuit with one end of MOSFETQ9, the other end of described voltage-stabiliser tube U2 connects the positive pole of diode D8, the other end of MOSFETQ9 connects the positive pole of diode D9, described lithium battery connects the positive pole of the 3rd diode, and the negative pole of described first diode, the negative pole of the second diode are all connected with single-chip microcomputer with the negative pole of the 3rd diode.Separate and say, pressurizer U2 and diode D8 forms the first branch road, and the components and parts of this first branch road can also comprise: electric capacity C6, C8, and wherein, USB voltage transitions is become single-chip microcomputer operating voltage by pressurizer U2; MOSFETQ9 and diode D9 forms the second branch road, and the components and parts of the second branch road also comprise: resistance R27, R30, triode Q10; MOSFETQ9 is P type MOSFET; The components and parts of the 3rd branch road comprise diode D10.When USB voltage is in the operating voltage range of single-chip microcomputer U1, conducting P type MOSFETQ9, is powered to single-chip microcomputer U1 by the ceiling voltage in these three branch roads; When charging/discharging voltage is not in the operating voltage range of single-chip microcomputer U1, disconnects P type MOSFETQ9, powered to single-chip microcomputer U1 by the ceiling voltage in first and third branch road, guarantee that single-chip microcomputer U1 can steady operation.
As shown in Figure 2, button SW1, resistance R22 are used for electric quantity of lithium battery display or star t-up discharge.
As shown in Figure 2, light-emitting diode D4, D5, D6, D7, resistance R23, R24 are used to indicate the electricity of lithium battery BAT1, and the percentage of lithium battery BAT1 dump energy equals bright light-emitting diode quantity and is multiplied by 25%.
Above are only the utility model preferably execution mode; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change and are out of shape the protection range that all should belong to the claim appended by the utility model.
Claims (3)
1. a charging quickly road for mobile device lithium battery, is characterized in that: comprising: charge-discharge circuit, lithium battery, sample circuit, single-chip microcomputer, drive circuit, filter circuit, power supply circuits, button and indicator light; Described drive circuit, sample circuit are all connected with charge-discharge circuit with lithium battery, described drive circuit, employing circuit, power supply circuits, filter circuit, button are all connected with single-chip microcomputer with indicator light, and described lithium battery, charge-discharge circuit are all connected with power supply circuits with single-chip microcomputer; Described filter circuit and charge-discharge circuit are also connected with the adapter of outside, and described charge-discharge circuit is also connected with the mobile device of outside.
2. the charging quickly road of mobile device lithium battery according to claim 1, is characterized in that: described charge-discharge circuit is heterogeneous multiple DC converter.
3. the charging quickly road of mobile device lithium battery according to claim 1, it is characterized in that: described power supply circuits comprise pressurizer, MOSFET, first diode, second diode and the 3rd diode, one end of described pressurizer is all connected with charge-discharge circuit with one end of MOSFET, the other end of described voltage-stabiliser tube connects the positive pole of the first diode, the other end of MOSFET connects the positive pole of the second diode, described lithium battery connects the positive pole of the 3rd diode, the negative pole of described first diode, the negative pole of the second diode is all connected with single-chip microcomputer with the negative pole of the 3rd diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520240619.XU CN204794134U (en) | 2015-04-20 | 2015-04-20 | Way of charging soon of mobile device lithium cell |
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| CN201520240619.XU CN204794134U (en) | 2015-04-20 | 2015-04-20 | Way of charging soon of mobile device lithium cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230043A (en) * | 2016-07-28 | 2016-12-14 | 广东欧珀移动通信有限公司 | The charging device of mobile terminal and mobile terminal |
| CN115411828A (en) * | 2022-11-02 | 2022-11-29 | 深圳多为智联科技有限公司 | Interphone battery protection circuit and interphone |
-
2015
- 2015-04-20 CN CN201520240619.XU patent/CN204794134U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230043A (en) * | 2016-07-28 | 2016-12-14 | 广东欧珀移动通信有限公司 | The charging device of mobile terminal and mobile terminal |
| CN106230043B (en) * | 2016-07-28 | 2018-01-19 | 广东欧珀移动通信有限公司 | The charging device and mobile terminal of mobile terminal |
| WO2018018963A1 (en) * | 2016-07-28 | 2018-02-01 | 广东欧珀移动通信有限公司 | Charging device for mobile terminal and mobile terminal |
| CN115411828A (en) * | 2022-11-02 | 2022-11-29 | 深圳多为智联科技有限公司 | Interphone battery protection circuit and interphone |
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