CN201243215Y - Bidirectional power supply source circuit for iron battery mobile phone - Google Patents
Bidirectional power supply source circuit for iron battery mobile phone Download PDFInfo
- Publication number
- CN201243215Y CN201243215Y CNU2008201143318U CN200820114331U CN201243215Y CN 201243215 Y CN201243215 Y CN 201243215Y CN U2008201143318 U CNU2008201143318 U CN U2008201143318U CN 200820114331 U CN200820114331 U CN 200820114331U CN 201243215 Y CN201243215 Y CN 201243215Y
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- mobile phone
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Abstract
The utility model provides a phone bi-directional power supplying source circuit of an iron cell for connecting the iron cell and the phone; the phone bi-directional power supplying source circuit comprises a power supplying input end of the iron cell, a power supplying output end of the phone, a voltage-boosting discharge switch, a voltage-reducing charge switch, a bi-directional direct current - direct current voltage boosting and reducing module, an electric-energy storing module and a detecting module; the voltage-boosting discharge switch is connected with the voltage-reducing charge switch in parallel; the power supplying input end of the iron cell, the detecting module, the electric-energy storing module and a parallel connecting circuit being composed of the voltage-boosting discharge switch and the voltage-reducing charge switch are sequentially connected with the bi-directional direct current - direct current voltage boosting and reducing module in series; the bi-directional direct current - direct current voltage boosting and reducing module is connected with the power supplying output end of the phone. The phone bi-directional power supplying source circuit adopts the bi-directional direct current - direct current voltage boosting and reducing module to lead the iron cell voltage to be linearly boosted by direct current - direct current voltage boosting, thus meeting the need of phone power supplying; besides, the iron cell can be charged by the circuit, and the voltage of the iron cell can be detected, thus being capable of fully playing the advantages of the iron cell such as low potential safety hazard, low cost and long service life.
Description
Technical field
The utility model relates to the conduction connecting circuit of battery, relates in particular to the conduction connecting circuit of iron cell and mobile phone.
Background technology
Lithium battery has advantages such as capacity is big, in light weight, memory-less effect, and prior mobile phone all is to adopt lithium battery power supply, but lithium battery also has a lot of deficiencies, such as poor safety performance, and short circuit, the blast easily etc. of being heated.Appearance along with the novel ferroelectric pond, the advantage that its cost is low, security performance is good is progressively promoted and is come, because iron cell is different with the positive electrode that lithium battery interior uses, embed embedding and go out voltage also with regard to difference, so iron cell is different with the output voltage of lithium battery, electric weight during the iron cell discharge concentrates between the 3.2V-3.4V, output voltage is 2.8V-3.8V, and the power reguirements of mobile telephone system is between 3.3V-4.2V, therefore, iron cell can not be direct to mobile phone power supply, the processing of need boosting as lithium battery.
In the prior art, general according to certain ratio, for example 1.12 times ratio is boosted the output voltage integral body of iron cell, and the voltage of the 2.8V-3.8V of iron cell output is upgraded to the voltage output of 3.3V-4.2V, can reach the requirement to the mobile phone power supply.Because the maximum output current after iron cell boosts is 1.8A, and the maximum current of the radio frequency power amplification modules work of mobile phone is more than 2A, the phenomenon that instantaneous electricity shortage therefore can occur, thereby cause the unexpected power down of mobile phone, special under the situation of mobile telephone signal difference, the power down phenomenon obviously increases.
Summary of the invention
The utility model provides a kind of iron cell mobile phone bidirectional power supply power circuit, and this circuit makes the iron cell of low pressure can carry out the mobile phone power supply normally and charges by mobile phone.
Iron cell mobile phone bidirectional power supply power circuit of the present utility model is used to connect iron cell and mobile phone, comprise the iron cell power supply input that connects iron cell, the mobile phone power supply output, the control that connect mobile phone boost to the discharge switch that boosts of mobile phone power supply, control step-down to step-down charge switch, the control of iron cell charging boost discharge switch and step-down charge switch with the two-way DC-DC buck control module of the charge or discharge that realize battery of mobile phone, boost or during step-down stored energy the electrical power storage module, detect the detection module of electrical power storage blocks current;
Described boost discharge switch and the parallel connection of step-down charge switch, the parallel circuits and the two-way DC-DC buck control module of iron cell power supply input, detection module, electrical power storage module, boost discharge switch and step-down charge switch composition are connected successively, and two-way DC-DC buck control module connects mobile phone power supply output.
Preferably, the voltage and the calculating voltage ratio of two-way DC-DC buck control module detection of handset battery output and iron cell power supply input are controlled boost discharge switch and step-down charge switch according to this voltage ratio.
Preferably, described two-way buck control module comprises driving signal input, signal processing module and pulse width modulation logic output circuit, the driving signal input input drive signal, drive signal is handled rear drive pulse width modulation logic output circuit through signal processing module.
Preferably, described signal processing module comprises current feedback module, the first Voltage Feedback module, maximum current limliting comparator, direction selector and reset current comparator;
Described current feedback module detects the electric current that flows through the electrical power storage module, testing result is converted to current feedback signal, and current feedback signal is sent to maximum current limliting comparator;
The first Voltage Feedback module detects the voltage ratio of iron cell power supply input and mobile phone power supply output, this voltage ratio is converted to voltage feedback signal, and this voltage feedback signal is sent to maximum current limliting comparator;
The first Voltage Feedback module also output voltage feedback signal to direction selector;
Maximum current limliting comparator, reset current comparator and direction selector are converted to control signal with current feedback signal and the voltage feedback signal that obtains, and export this control signal is also controlled boost discharge switch or step-down charge switch to the pulse width modulation logic output circuit conducting or shutoff.
Preferably, described pulse width modulation logic output circuit comprises pulse width modulation module, first buffer, second buffer, the second Voltage Feedback module, clock generator, discharge switch pin and step-down charging pass open pipe pin boost; Clock generator output clock information is to the pulse width modulation module, the pulse width modulation module outputs a control signal to first buffer and second buffer, first buffer outputs a control signal to the discharge switch pin that boosts, second buffer output control information is to step-down charge switch pin, first buffer and second buffer through the second Voltage Feedback module to pulse width modulation module return voltage feedback signal.
The utility model adopts two-way DC-DC buck control module by DC-DC voltage boosting the iron cell voltage linear to be boosted, thereby satisfy the needs of mobile phone power supply, can charge to iron cell by dc-dc boost, in power supply, can detect iron cell voltage by voltage after detecting DC-DC voltage boosting.Can give full play to the advantage that the iron cell potential safety hazard is little, cost is low, the life-span is long.
Description of drawings
Fig. 1 is existing lithium battery and mobile phone electric power-feeding structure schematic diagram;
Fig. 2 is existing iron cell discharge curve schematic diagram;
Fig. 3 is the utility model first embodiment and iron cell and mobile phone syndeton schematic diagram;
Fig. 4 is the circuit module structural representation of the utility model first embodiment;
Fig. 5 is the electrical block diagram of the utility model second embodiment;
Fig. 6 is the two-way DC-DC buck control module circuit module structural representation of the utility model second embodiment;
Fig. 7 is the discharge curve schematic diagram after the utility model second embodiment connects iron cell.
The utility model purpose, function and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing
Embodiment
Embodiment of the present utility model has realized the boost discharge and the step-down charging of iron cell by the bidirectional, dc buck, makes iron cell can satisfy the needs that mobile phone uses.
With reference to Fig. 3, the iron cell mobile phone bidirectional power supply power circuit 100 of first embodiment of the present utility model is used to connect iron cell 300 and mobile phone 400, as shown in Figure 4, described iron cell mobile phone bidirectional power supply power circuit comprise detection module 110, electrical power storage module 120, the discharge switch 130 that boosts, step-down charge switch 140 and two-way DC-DC buck control module 150, iron cell power supply input 160 and mobile phone power supply output 170.
Described boost discharge switch 130 and 140 parallel connections of step-down charge switch, the parallel circuits and the two-way DC-DC buck control module 150 of iron cell power supply input 160, detection module 110, electrical power storage module 120, boost discharge switch 130 and step-down charge switch 140 compositions are connected successively, two-way DC-DC buck control module 150 connects mobile phone power supply output 170, and two-way DC-DC buck control module 150 inside comprise trigger.
Trigger is a triggering cycle at the voltage of mobile phone power supply output 170 during less than 1.12 times of iron cell power supply input 160 voltages, from the voltage of mobile phone power supply output 170 greater than being a triggering cycle when equaling 1.12 times of iron cell power supply input 160 voltages.Trigger has 0 and 1 two state, and from 1 to 0 for resetting, and from 0 to 1 for putting 1.
Described detection module 110 detects the electric current of electrical power storage module 120, boost discharge switch 130 and step-down charge switch 140 of two-way DC-DC buck control module 150 control realized the discharge or the charging of batteries of mobile phone, and electrical power storage module 120 is being boosted or stored energy during step-down.
When the voltage of two-way DC-DC buck control module 150 detection of handset power supplies output 170 during less than 1.12 times of iron cell power supply input 160 voltages, the discharge switch 130 that boosts is opened, the loop conducting that iron cell power supply this moment input 160, detection module 110, electrical power storage module 120, the discharge switch 130 that boosts, two-way DC-DC buck control module 150 and mobile phone power supply output 170 are formed, electrical power storage module 120 storage of electrical energy.Default maximum current limliting in the two-way DC-DC buck control module 150, when detection module 110 detects peak current on the electrical power storage modules 120 and reaches default maximum current limliting, two-way DC-DC buck control module 150 its inner triggers of replacement, when the moment that the load of mobile phone power supply output 170 increases, the ratio of the voltage of mobile phone power supply output 170 and iron cell power supply input 160 voltages can reduce, average current and the load current coupling of DC-to-DC buck control module 150 increase output voltages this moment on electrical power storage module 120.Trigger triggers the discharge switch 130 that boosts and turn-offs then, make electric current by step-down charge switch 140 to mobile phone power supply output 170 output currents.Enter the next triggering cycle at the voltage of mobile phone power supply output 170 during less than 1.12 times of iron cell power supply input 160 voltages, two-way DC-DC buck control module 150 keeps continuous conduction mode before entering the next triggering cycle, when next triggering cycle or two-way DC-DC buck control module 150 enter discontinuous conduction mode, step-down charge switch 140 conducting always, the above-mentioned course of work that circulates realizes boosting discharging function.
When the voltage of two-way DC-DC buck control module 150 detection of handset power supplies output during greater than 1.12 times of iron cell power supply input 160 voltages, the discharge switch 130 that boosts turn-offs, and 120 chargings of 140 pairs of electrical power storage modules of step-down charge switch.Two-way DC-DC buck control module 150 triggers put 1, trigger triggers step-down charge switch 140 and opens, the loop conducting that iron cell power supply this moment input 160, mobile phone power supply output 170, detection module 110, electrical power storage module 120 and step-down charge switch 140 are formed, electrical power storage module 120 store electrical energy are up to two-way DC-DC buck control module 150 replacement triggers.When the peak current on the electrical power storage module 120 reaches default maximum limit flow valuve, two-way DC-DC buck control module 150 replacement triggers.When the load of mobile phone power supply output 170 changes, the ratio of the voltage of mobile phone power supply output 170 and iron cell power supply input 160 voltages can reduce, and at this moment two-way DC-DC buck control module 150 can increase average current and the load current coupling of output voltage on electrical power storage module 120.Two-way DC-DC buck control module 150 replacement triggers, step-down charge switch 140 turn-offs, discharge switch 130 conductings of boosting, make electric current from electrical power storage module 120 to iron cell power supply input 160 output currents.So circulation realizes the step-down charging process.
When cell-phone charging, two-way DC-DC buck control module 150 is as the dc-dc boost module, make charging voltage be reduced to the charging voltage of iron cell, the mobile phone that iron cell is housed can be charged normal, when mobile phone uses, two-way DC-DC buck control module 150 is as the DC-DC voltage boosting module, make the output voltage linearity of iron cell be elevated to mobile phone power supply required voltage, use thereby satisfy mobile phone, the voltage after can boosting by detection simultaneously detects the voltage of iron cell.
Propose second embodiment based on first embodiment, in conjunction with Fig. 5 and shown in Figure 6, present embodiment is on the basis of first embodiment, and electrical power storage module 120 comprises a big saturation current inductance L and the capacitor C 1 in parallel with big saturation current inductance L.Detection module comprises that one detects resistance R.Two-way DC-DC buck control module 150 comprises driving signal input RUN-A, signal processing module 151 and pulse width modulation logic output circuit 152, the drive signal that driving signal input RUN-A input iron cell sends, the drive signal of sending drives 150 work of two-way DC-DC buck control module as the enable signal of two-way DC-DC buck control module 150.
Pulse width modulation logic output circuit 152 comprises pulse width modulation module 1521, first buffer 1522, second buffer 1523, the second Voltage Feedback module 1524, clock generator 1525, open pipe pin P-drv is closed in discharge switch pin N-drv and the step-down charging of boosting, clock generator 1525 output clock informations are to pulse width modulation module 1521, the pulse width signal of these clock signal control impuls width modulated module 1521 outputs, pulse width modulation module 1521 produces control signal and outputs to first buffer 1522 and second buffer 1523, first buffer 1522 outputs a control signal to the discharge switch pin N-drv that boosts, control the conducting and the shutoff of the discharge switch that boosts, second buffer 1523 outputs a control signal to step-down charge switch pin P-drv, the conducting and the shutoff of control step-down charge switch, to pulse width modulation module 1521 return voltage feedback signals, pulse width modulation module 1521 is adjusted the output of pulse width signal according to this voltage feedback signal through the second Voltage Feedback module 1524 for first buffer 1522 and second buffer 1523.
The discharge switch 130 that boosts of present embodiment adopts N-MOSFET (N-Metal-Oxide-Semiconductor Field Effect Transistor, N channel metal-oxide-semiconductor field), step-down charge switch 140 adopts P-MOSFET (P Metal-Oxide-Semiconductor Field EffectTransistor, P channel metal-oxide-semiconductor field).The grid of N-MOSFET is connected the discharge switch pin N-drv that boosts of first buffer, 1522 output control signals; The grid of P-MOSFET is connected the step-down charge switch pin P-drv of second buffer, 1523 output control signals.The source electrode of P-MOSFET and the drain electrode of N-MOSFET in succession, inductance is connected with the source electrode of P-MOSFET and the drain electrode of N-MOSFET.
And Fig. 7 adds behind the present embodiment circuit discharge curve when the conversation for iron cell, uses as can be seen after the present embodiment circuit, can reach the purpose of the big electric current output of 3.6V fully.
Simultaneously, the voltage on the pin VP can realize that electric weight detects after sending to mobile phone.
In this enforcement, detect resistance R and select 0.03 ohm for use, error 1% is to realize accurately detecting the electric current on the big saturation current inductance L.Boost discharge switch 130 and step-down charge switch 140 adopts little N-MOSFET and the P-MOSFET device of source leakage conductance energising resistance respectively, leakage conductance galvanization aspect, source, the lasting conducting electric current of guaranteeing step-down charge switch 140 more than the 2A, the peak value conducting electric current of the discharge switch 130 that boosts is more than 4A.According to the peak inrush current of two-way DC-DC buck control module 150, the rated current that requires big saturation current inductance L is more than 2.5A, and inductance value is about 1uF-2.5uF.And input capacitance C1 decides according to the internal resistance of iron cell, and capacitance can satisfy its voltage stabilizing, filtering requirements at the ceramic condenser of the low ESR of the above X5R of 1u, X7R.Output capacitance C2 chooses the electric capacity of the above low ESR resistance of 47uF.
The iron cell mobile phone bidirectional power supply power circuit that the foregoing description provides is when cell-phone charging, by charging voltage being reduced to the charging voltage of iron cell, the mobile phone that iron cell is housed can be charged normal, when mobile phone uses, be elevated to mobile phone power supply required voltage by output voltage linearity with iron cell, use the normal power supply demand that is thereby satisfy mobile phone, the voltage after can boosting by detection simultaneously detects the voltage of iron cell.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (10)
1, a kind of iron cell mobile phone bidirectional power supply power circuit, be used to connect iron cell and mobile phone, it is characterized in that: comprise the iron cell power supply input that connects iron cell, the mobile phone power supply output that connects mobile phone, control is boosted to the discharge switch that boosts of mobile phone power supply, the control step-down is to the step-down charge switch of iron cell charging, control discharge switch and step-down charge switch the two-way DC-DC buck control module of boosting with the charge or discharge that realize battery of mobile phone, boosting or the electrical power storage module of stored energy during step-down, detect the detection module of electrical power storage blocks current;
Described boost discharge switch and the parallel connection of step-down charge switch; The parallel circuits and the two-way DC-DC buck control module of iron cell power supply input, detection module, electrical power storage module, boost discharge switch and step-down charge switch composition are connected successively; Two-way DC-DC buck control module connects mobile phone power supply output.
2, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 1 is characterized in that:
The voltage and the calculating voltage ratio of described two-way DC-DC buck control module difference detection of handset power supply output and iron cell power supply input are controlled boost discharge switch and step-down charge switch according to this voltage ratio.
3, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 1 or 2 is characterized in that:
Described two-way buck control module comprises driving signal input, signal processing module and pulse width modulation logic output circuit, the driving signal input input drive signal, drive signal is handled rear drive pulse width modulation logic output circuit through signal processing module.
4, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 3 is characterized in that:
Described signal processing module comprises current feedback module, the first Voltage Feedback module, maximum current limliting comparator, direction selector and reset current comparator;
Described current feedback module detects the electric current that flows through the electrical power storage module, testing result is converted to current feedback signal, and current feedback signal is sent to maximum current limliting comparator;
The first Voltage Feedback module detects the voltage ratio of iron cell power supply input and mobile phone power supply output, this voltage ratio is converted to voltage feedback signal, and this voltage feedback signal is sent to maximum current limliting comparator;
The first Voltage Feedback module also output voltage feedback signal to direction selector;
Maximum current limliting comparator, reset current comparator and direction selector are converted to control signal with current feedback signal and the voltage feedback signal that obtains, and export this control signal is also controlled boost discharge switch or step-down charge switch to the pulse width modulation logic output circuit conducting or shutoff.
5, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 4 is characterized in that:
Described pulse width modulation logic output circuit comprises pulse width modulation module, first buffer, second buffer, the second Voltage Feedback module, clock generator, discharge switch pin and step-down charge switch pin boost;
The clock generator clock signal is to the pulse width modulation module, the pulse width modulation module outputs a control signal to first buffer or second buffer, first buffer outputs a control signal to the discharge switch pin that boosts, second buffer output control information is to step-down charge switch pin, and first buffer and second buffer return second voltage feedback signal through the second Voltage Feedback module to the pulse width modulation module.
6, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 5, it is characterized in that: the second Voltage Feedback information detects the voltage of first buffer or second buffer and is converted to second voltage feedback signal, and the pulse width modulation module is according to second voltage feedback signal adjustment output control signal.
7, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 1 or 2, it is characterized in that: the described discharge switch that boosts comprises N-MOSFET.
8, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 1 or 2, it is characterized in that: the step-down charge switch comprises P-MOSFET.
9, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 1 or 2 is characterized in that: described electrical power storage module comprise big saturation current inductance and with big saturation current inductance electric capacity in parallel.
10, iron cell mobile phone bidirectional power supply power circuit as claimed in claim 1 or 2, it is characterized in that: described detection module comprises a resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201143318U CN201243215Y (en) | 2008-05-12 | 2008-05-12 | Bidirectional power supply source circuit for iron battery mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201143318U CN201243215Y (en) | 2008-05-12 | 2008-05-12 | Bidirectional power supply source circuit for iron battery mobile phone |
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| CN201243215Y true CN201243215Y (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201143318U Expired - Fee Related CN201243215Y (en) | 2008-05-12 | 2008-05-12 | Bidirectional power supply source circuit for iron battery mobile phone |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826744A (en) * | 2010-05-05 | 2010-09-08 | 深圳市爱商实业有限公司 | Iron cell charging circuit |
| CN107069890A (en) * | 2017-06-02 | 2017-08-18 | 江苏万邦微电子有限公司 | A kind of power-supply management system of single-chip portable electronic |
| CN108418275A (en) * | 2018-03-30 | 2018-08-17 | 深圳市华宝新能源股份有限公司 | A kind of energy storage device |
| CN109301366A (en) * | 2018-09-30 | 2019-02-01 | 深圳市格瑞普智能电子有限公司 | Battery circuit and battery pack heating means |
| CN109510045A (en) * | 2018-12-05 | 2019-03-22 | 北京阿法龙科技有限公司 | A kind of USB data line of auxiliary power supply |
| CN115514052A (en) * | 2022-10-10 | 2022-12-23 | 东莞市奥源电子科技有限公司 | Bidirectional inverter power supply module |
| CN109301366B (en) * | 2018-09-30 | 2024-06-04 | 深圳市格瑞普智能电子有限公司 | Battery pack circuit and battery pack heating method |
-
2008
- 2008-05-12 CN CNU2008201143318U patent/CN201243215Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826744A (en) * | 2010-05-05 | 2010-09-08 | 深圳市爱商实业有限公司 | Iron cell charging circuit |
| CN101826744B (en) * | 2010-05-05 | 2012-06-06 | 深圳爱商精密电子有限公司 | Iron cell charging circuit |
| CN107069890A (en) * | 2017-06-02 | 2017-08-18 | 江苏万邦微电子有限公司 | A kind of power-supply management system of single-chip portable electronic |
| CN108418275A (en) * | 2018-03-30 | 2018-08-17 | 深圳市华宝新能源股份有限公司 | A kind of energy storage device |
| CN109301366A (en) * | 2018-09-30 | 2019-02-01 | 深圳市格瑞普智能电子有限公司 | Battery circuit and battery pack heating means |
| CN109301366B (en) * | 2018-09-30 | 2024-06-04 | 深圳市格瑞普智能电子有限公司 | Battery pack circuit and battery pack heating method |
| CN109510045A (en) * | 2018-12-05 | 2019-03-22 | 北京阿法龙科技有限公司 | A kind of USB data line of auxiliary power supply |
| CN115514052A (en) * | 2022-10-10 | 2022-12-23 | 东莞市奥源电子科技有限公司 | Bidirectional inverter power supply module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20160512 |
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| CF01 | Termination of patent right due to non-payment of annual fee |