CN202798095U

CN202798095U - Bidirectional wireless charging/discharging device of portable electronic product

Info

Publication number: CN202798095U
Application number: CN2012203789627U
Authority: CN
Inventors: 叶明祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-31
Filing date: 2012-07-31
Publication date: 2013-03-13
Anticipated expiration: 2022-07-31

Abstract

The utility model discloses a bidirectional wireless charging/discharging device of a portable electronic product, wherein a circuit device of the portable electronic product comprises a battery; the bidirectional wireless charging/discharging device comprises a wireless receiving/transmitting unit, and a logic control unit, a buck/boost unit, a first countercurrent preventer and a second countercurrent preventer, a control switch and a receiving or transmitting mode selecting unit which are electrically connected between the circuit device and the wireless receiving/transmitting unit; the logic control unit comprises a selected mode automatic response module; the first and the second countercurrent preventers have countercurrent preventing and switching functions; the buck/boost unit is used for controlling buck and boost while charging and discharging; the logic control unit is used for detecting whether a load exists and additionally used for controlling actions of the buck/boost unit and the first and the second countercurrent preventers, and even used for combining with the control switch to control discharging or charging and combining with the receiving or emitting mode selecting unit to select a current mode; and the receiving or transmitting mode selecting unit is electrically connected with the selected mode automatic response module.

Description

The double-direction radio charge and discharge device of portable electric product

Technical field

The utility model is about a kind of double-direction radio charge and discharge device, refers to especially a kind of double-direction radio charge and discharge device of avoiding the accumulation formula damage that charging causes to battery at every turn and promoting the portable electric product of wireless charging discharging efficiency and buck efficient.

Background technology

Along with day by day prevailing of wireless charging, certainly will develop into the state of wireless charging everywhere future.

Though but wireless charging brings great convenience everywhere, no matter be wired or wireless charging only, the first surging that produces that is at every turn charging, all will inevitably cause to battery the damage of accumulation formula, and then accumulation formula impairment battery life, in other words, more and more many along with charging times, the life-span of battery is also corresponding more and more short, and the efficiency for charge-discharge of battery is also more and more poor.

But under the situation of wireless charging everywhere, will there be simultaneously most wireless chargings place in people's the scope of activities, or people will repeatedly pass in and out same wireless charging place, thus, entrained portable electric product certainly will be at one day interior by wireless charging repeatedly indistinguishably, thereby the battery life in the portable electric product is come to an end ahead of time.

Secondly, because the wireless charging discharging efficiency is still on the low side at present, namely discharge capacity is still higher in charge volume, and it is also on the low side to add buck efficient, causes the practicality of wireless charging discharge still can't improve, early by the dirty disease of people for a long time.

In addition, portable electric product generally only has the function that is recharged, but the electric power of self can't be transferred to other electronic product charging, and be to be a disappearance; Moreover, even if having the charge and discharge function concurrently, but can't switch charging or switch discharges, cause operational the deuce to pay.

The utility model content

The purpose of this utility model is to provide a kind of double-direction radio charge and discharge device of portable electric product, can avoid the accumulation formula damage that charging causes to battery at every turn even can also promote wireless charging discharging efficiency and buck efficient.

For achieving the above object, the double-direction radio charge and discharge device that the utility model provides, for being applied to a portable electric product with circuit arrangement, this circuit arrangement is electrically connected with a receiving end and a battery, and this double-direction radio charge and discharge device comprises:

One logic control element has a lectotype and automatically replies module and most pin;

One wireless receiving transmitter unit has a transmission ends and a tested end, and this tested end is electrically connected at the detecting pin of this logic control element;

One buck unit, have one first voltage adjusting end, one second voltage adjusting end and two control ends, this the second voltage adjusting end is electrically connected at the transmission ends of this wireless receiving transmitter unit, this two control end is electrically connected at respectively first and second control pin of this logic control element, and the supply pin of this logic control element is electrically connected at this second voltage adjusting end that joins each other and this transmission ends;

One first adverse current preventer, have an arrival end, a port of export and a control end, this arrival end and the port of export are electrically connected at respectively the discharge end of described battery and the first voltage adjusting end of this buck unit, and this control end is electrically connected at the 3rd control pin of this logic control element;

One control switch, the one end is electrically connected at the discharge end of described battery, and its another end is electrically connected at the control end of this first adverse current preventer and the 3rd control pin of this logic control element;

One second adverse current preventer, have an arrival end, a port of export and a control end, this port of export and arrival end are electrically connected at respectively the receiving end of described circuit arrangement and the first voltage adjusting end of this buck unit, and this control end is electrically connected at the 5th control pin of this logic control element; And

One receives or the emission mode selected cell, be electrically connected at that one of this logic control element receives or the discharge end of emission mode detecting pin and described battery between, and this reception or emission mode are detected pin and are electrically connected at this lectotype and automatically reply module.

Described double-direction radio charge and discharge device, wherein, this reception or emission mode selected cell are one of them of a reception or emission mode selector switch and a reception or emission mode selection signal.

Described double-direction radio charge and discharge device, wherein, described circuit arrangement has a protective circuit, and this protective circuit is electrically connected between described battery and the receiving end.

Described double-direction radio charge and discharge device, wherein, this buck unit is a kind of buck unit with synchronous rectification, and is metal oxide semiconductcor field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) formula synchronous rectification.

Described double-direction radio charge and discharge device, wherein, this buck unit with synchronous rectification comprises the each other metal oxide semiconductcor field effect transistor of series aiding connection of an inductance and two, each tool one control utmost point of this two metal oxide semiconductcor field effect transistor, this two control utmost point is electrically connected at respectively two control ends of this buck unit, the end of this two metal oxide semiconductcor field effect transistor after series connection is electrically connected at described the second voltage adjusting end, and another end is ground connection then; One end of this inductance is electrically connected at described the first voltage adjusting end, and another end then is electrically connected between this two metal oxide semiconductcor field effect transistor.

Described double-direction radio charge and discharge device, wherein, comprise one the 3rd adverse current preventer, the 3rd adverse current preventer has an arrival end, a port of export and a control end, the port of export of the 3rd adverse current preventer and arrival end are electrically connected at respectively the receiving end of described circuit arrangement and the port of export of described the second adverse current preventer, and the control end of the 3rd adverse current preventer then is electrically connected at the 6th control pin of this logic control element.

Described double-direction radio charge and discharge device, wherein, respectively this adverse current preventer has one first resistance and two toward each other to the metal oxide semiconductcor field effect transistor of connecting, the two ends of this two metal oxide semiconductcor field effect transistor after series connection are arrival end and the port of export of described adverse current preventer, each tool one control utmost point of this two metal oxide semiconductcor field effect transistor, this two control utmost point is electrically connected at the control end of this adverse current preventer, one end of this first resistance is electrically connected between this two metal oxide semiconductcor field effect transistor, and another end also is electrically connected at the control end of this adverse current preventer.

Described double-direction radio charge and discharge device, wherein, respectively this adverse current preventer has a transistor and one second resistance, this transistorized first utmost point is electrically connected at the control utmost point of this two metal oxide semiconductcor field effect transistor, this transistorized second utmost point ground connection, this second resistance is electrically connected between the control end of this transistorized the 3rd utmost point and this adverse current preventer.

Described double-direction radio charge and discharge device, wherein, the 4th control pin of this logic control element is electrically connected at the 3rd control pin with circuit type.

Described double-direction radio charge and discharge device, wherein, this control switch is an automatic reset switch.

Described double-direction radio charge and discharge device, wherein, the upstream of this reception or emission mode selector switch electrically is serially connected with a diode and one the 3rd resistance, and the downstream of this reception or emission mode selector switch then electrically is serially connected with one the 4th resistance.

Described double-direction radio charge and discharge device, wherein, this logic control element has cell voltage detecting pin, and this cell voltage detecting pin is electrically connected at the discharge end of described battery and reads the voltage of this battery.

Described double-direction radio charge and discharge device, wherein, this logic control element has a temperature detecting pin, and this temperature detecting pin is electrically connected with a temperature sensor and the temperature of the described double-direction radio charge and discharge device of sensing.

Described double-direction radio charge and discharge device, wherein, this temperature sensor is a thermistor.

Described double-direction radio charge and discharge device, wherein, this thermistor is parallel to an end of one the 5th resistance, and the another end of the 5th resistance is electrically connected between the second voltage adjusting end of the supply pin of this logic control element and this buck unit.

The utility model has the advantages that:

1) double-direction radio charge and discharge device of the present utility model, belonging to double-direction radio by this double-direction radio charge and discharge device system discharges and recharges, be wireless charging, also can wirelessly discharge so that be provided with the portable electric product of the utility model double-direction radio charge and discharge device, and also have the charge and discharge model selection and institute's lectotype automatically replies function, really very convenient in operation.

2) double-direction radio charge and discharge device of the present utility model, be lower than battery by the special setting position of electrochemical capacitance and the impedance of electrochemical capacitance, therefore, being recharged Shi Huixian charges to electrochemical capacitance, thereby reaching the surging problem when allowing electrochemical capacitance keep out each charging, is to avoid the accumulation formula that charging causes to battery at every turn to damage relatively; Adverse current by first and second adverse current preventer prevents effect, can avoid electric leakage, is to have electricity saving function relatively.

3) double-direction radio charge and discharge device of the present utility model is a kind of buck unit (preferably being the synchronous rectification of metal oxide semiconductcor field effect transistor formula) with synchronous rectification by the buck unit, and promotes according to this efficient of buck.

4) double-direction radio charge and discharge device of the present utility model, also come to prevent or as the significant components of switch as adverse current with first and second metal oxide semiconductcor field effect transistor by described the first～three adverse current preventer, the electricity of institute's loss is lower when making conducting, so discharging efficiency can be higher, thereby promote the wireless charging discharging efficiency.

5) double-direction radio charge and discharge device of the present utility model, by setting up main switch, with the function of master switch with similar electric power system, that is: convenience, practicality effect that the single switch of control just can start or cut out described double-direction radio charging/discharging function had.

6) double-direction radio charge and discharge device of the present utility model; by having set up the protective circuits such as temperature detecting and cell voltage detecting; in emission or receiving course, protecting, thereby have over-discharge can or the situation that overcharges that to avoid overheated and can avoid self battery.

Description of drawings

Fig. 1 is the circuit diagram that the utility model double-direction radio charge and discharge device is electrically connected at the first embodiment of a portable electric product.

Fig. 2 is that the utility model is according to the equivalent electric circuit calcspar of Fig. 1.

Fig. 3 is the equivalent electric circuit calcspar of the utility model the second embodiment.

Primary clustering symbol description in the accompanying drawing:

1 logic control element, 10 main switches, 11～16 the first～six control pins; 16a cell voltage detecting pin, 17 supply pins, 17a temperature detecting pin; the 17b temperature sensor, 17c the 5th resistance, 18 detecting pin; 18a receives or emission mode detecting pin; 18b receives or the emission mode selector switch, 18c diode, 18d the 3rd resistance; 18e the 4th resistance; 18f receives or emission mode is selected signal, and 19 emissions keep loop, 2 wireless receiving transmitter units; 21 transmission ends; 22 tested ends, 3 buck unit, 31; 32 first; two voltage adjusting ends; 33; 34 control ends; 35; 36 first; two metal oxide semiconductcor field effect transistors, 37 inductance, 4; 4a; 4b first; two; three adverse current preventers; 41 arrival ends; 42 ports of export, 43 control ends, 431 Section Points; 44; 45 first; two metal oxide semiconductcor field effect transistors; 46 first resistance, 47 transistors, 48 second resistance; 5 control switchs; 6 first electrochemical capacitances, 61 first nodes, 9 portable electric products; 91 circuit arrangements; 911 signal output ends, 92 protective circuits, 921 receiving ends; 93 batteries, 931 discharge ends.

Embodiment

The double-direction radio charge and discharge device that the utility model provides, for being applied to a portable electric product with circuit arrangement, this circuit arrangement is electrically connected with a receiving end and a battery, and this double-direction radio charge and discharge device comprises: a logic control element, a wireless receiving transmitter unit, a buck unit, one first adverse current preventer, one second adverse current preventer, a control switch and receive or the emission mode selected cell.Wherein, this logic control element has a lectotype and automatically replies module and most pin; This wireless receiving transmitter unit has a transmission ends and a tested end, and this tested end is electrically connected at the detecting pin of this logic control element; This buck unit has one first voltage adjusting end, one second voltage adjusting end and two control ends, this the second voltage adjusting end is electrically connected at the transmission ends of this wireless receiving transmitter unit, this two control end is electrically connected at respectively first and second control pin of this logic control element, and the supply pin of this logic control element is electrically connected at this second voltage adjusting end that joins each other and this transmission ends; This first adverse current preventer has an arrival end, a port of export and a control end, this arrival end and the port of export are electrically connected at respectively the discharge end of described battery and the first voltage adjusting end of this buck unit, and this control end is electrically connected at the 3rd control pin of this logic control element; One end of this control switch is electrically connected at the discharge end of described battery, and another end is electrically connected at the control end of this first adverse current preventer and the 3rd control pin of this logic control element; This second adverse current preventer has an arrival end, a port of export and a control end, this port of export and arrival end are electrically connected at respectively the receiving end of described circuit arrangement and the first voltage adjusting end of this buck unit, and this control end is electrically connected at the 5th control pin of this logic control element; This reception or emission mode selected cell, be electrically connected at that one of this logic control element receives or the discharge end of emission mode detecting pin and described battery between, and this reception or emission mode are detected pin and are electrically connected at this lectotype and automatically reply module.

Thus, the surging problem in the time of allowing electrochemical capacitance keep out each charging can avoid the accumulation formula that charging causes to battery at every turn to damage relatively; Adverse current by first and second adverse current preventer prevents effect, can avoid electric leakage, relatively has electricity saving function; By the reception of setting up or emission mode selector switch, with the pattern that allows the user select voluntarily wish to switch.

Moreover the double-direction radio charge and discharge device that the utility model provides is a kind of buck unit (preferably being the synchronous rectification of metal oxide semiconductcor field effect transistor formula) with synchronous rectification by the buck unit, and promotes according to this efficient of buck.

In order further to understand feature of the present utility model, characteristics and technology contents, see also following about detailed description of the present utility model and accompanying drawing, only accompanying drawing only provide with reference to and explanation usefulness, non-in order to limit the utility model.

The double-direction radio charge and discharge device of the portable electric product that the utility model provides discloses the first embodiment of the present utility model as shown in Figure 1 and Figure 2, is then disclosing the second embodiment of the present utility model respectively as shown in Figure 3.

The first embodiment

See also the utility model shown in Figure 2 the first embodiment; for being applied to a portable electric product 9 with circuit arrangement 91; this circuit arrangement 91 is electrically connected with a receiving end 921 and a battery 93; preferably; this circuit arrangement 91 also has a protective circuit 92, and this protective circuit 92 is electrically connected between this receiving end 921 and the battery 93.This double-direction radio charge and discharge device comprises: a logic control element 1, a wireless receiving transmitter unit 2, a buck unit 3, one first adverse current preventer 4, one second adverse current preventer 4a and a control switch 5 preferably also comprise one the 3rd adverse current preventer 4b, one first electrochemical capacitance 6, one second electrochemical capacitance (not shown).

This logic control element 1 has the first～six control pin 11～16 and supply pin 17 and detecting pin 18, its not the pin of marking component symbol then be grounding leg.

This wireless receiving transmitter unit 2 has a transmission ends 21 and a tested end 22, and this tested end 22 is electrically connected at the detecting pin 18 of this logic control element 1.

This buck unit 3 has one first voltage adjusting end 31, one second voltage adjusting end 32 and two

control ends

33,34, this second voltage adjusting end 32 is electrically connected at the transmission ends 21 of this wireless receiving transmitter unit 2, this two

control end

33,34 is electrically connected at respectively first and

second control pin

11,12 of this logic control element 1, and the supply pin 17 of this logic control element 1 is electrically connected at this second voltage adjusting end 32 and this transmission ends 21 of joining each other.Preferably, this buck unit 3 is a kind of buck unit 3 with synchronous rectification, and is metal oxide semiconductcor field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) formula synchronous rectification; Please arrange in pairs or groups and consult Fig. 1, shown in Figure 2, this buck unit 3 with synchronous rectification comprise an inductance 37 and two each other series aiding connection first, two metal oxide semiconductcor

field effect transistors

35,36, this is first years old, two metal oxide semiconductcor

field effect transistors

35,36 each tool one control utmost point (not marking component symbol), this two control utmost point is electrically connected at respectively two control ends 33 of this

buck unit

3,34, this is first years old, two metal oxide semiconductcor

field effect transistors

35,36 in the series connection after an end be electrically connected at described the second voltage adjusting end 32, another end is ground connection then, one end of this inductance 37 is electrically connected at described the first voltage adjusting end 31, another end then be electrically connected at this first, two metal oxide semiconductcor field effect transistors 35, between 36.

This first adverse current preventer 4 has an arrival end 41, a port of export 42 and a control end 43, this arrival end 41 and the port of export 42 are electrically connected at respectively the discharge end 931 of described battery 93 and the first voltage adjusting end 31 of this buck unit 3, are electrically connected at the 3rd control pin (as the usefulness of emitting identification) 13 of this logic control element 1 as for 43 of its control ends.Preferably, the 4th control pin 14 of this logic control element 1 further is electrically connected at the 3rd control pin 13 with circuit type, i.e. emission shown in the figure keeps loop (as the usefulness that continues to remain on emission mode) 19.

One end of this control switch 5 is electrically connected at the discharge end 931 of described battery 93, another end then is electrically connected at the control end 43 of this first adverse current preventer 4 and the 3rd control pin 13 of this logic control element 1, and control switch 5 can be controlled and switch receiving mode or emission mode; Wherein, the joint of the control end 43 of the another end of this control switch 5 and this first adverse current preventer 4 forms a Section Point 431.Preferably, this control switch 5 is an automatic reset switch.

This second adverse current preventer 4a also has an arrival end 41, a port of export 42 and a control end 43; this port of export 42 and arrival end 41 are electrically connected at respectively the receiving end 921 of protective circuit 92 of described circuit arrangement 91 and the first voltage adjusting end 31 of this buck unit 3, are electrically connected at the 5th control pin 15 of this logic control element 1 as for 43 of its control ends.

One electrode of this first electrochemical capacitance 6 is electrically connected at the junction of receiving end 921 and the port of export 42 of this second adverse current preventer 4a of the protective circuit 92 of described circuit arrangement 91; and another electrode that forms a first node 61, the first electrochemical capacitances 6 in this junction ground connection then.

The 3rd adverse current preventer 4b also has an arrival end 41, a port of export 42 and a control end 43; this port of export 42 and arrival end 41 are receiving end 921 and this first node 61 that is electrically connected at respectively the protective circuit 92 of described circuit arrangement 91; be electrically connected at the 6th control pin 16 of this logic control element 1 as for 43 of its control ends; the 6th control pin 16 energy output control signals by this logic control element 1; to control ON or the OFF of the 3rd adverse current preventer 4b, relatively can control and whether battery 93 be charged.Secondly, the second electrochemical capacitance that this figure does not show is parallel to described battery 93, certainly, the set electrochemical capacitance of the utility model double-direction radio charge and discharge device can be: described the first electrochemical capacitance 6 only is set, only described the second electrochemical capacitance (not shown) or described the first electrochemical capacitance 6 and the second electrochemical capacitance also can be set simultaneously is set.

Because the impedance of the first electrochemical capacitance 6 and the second electrochemical capacitance is lower than battery 93, thus electrochemical capacitance is charged being recharged Shi Huixian, thus reach surging problem when allowing electrochemical capacitance keep out each charging; Moreover electrochemical capacitance is easy to again be filled full, so will transfer immediately battery 93 chargings.

Wherein, please arrange in pairs or groups and consult Fig. 1, shown in Figure 2, this adverse current preventer (4 respectively, 4a, 4b) has one first resistance 46 and two toward each other to first of series connection, two metal oxide semiconductcor

field effect transistors

44,45, the two ends of this two metal oxide semiconductcor field effect transistor after series connection are arrival end 41 and the port of export 42 of described adverse current preventer, this is first years old, two metal oxide semiconductcor

field effect transistors

44,45 each tool one control utmost point (not marking component symbol), this two control utmost point is electrically connected at the control end 43 of this adverse current preventer, one end of this first resistance 46 be electrically connected at this first, two metal oxide semiconductcor field effect transistors 44, between 45, another end then also is electrically connected at the control end 43 of this adverse current preventer.In addition, respectively this adverse current preventer (4,4a, 4b) also has a transistor 47 and one second resistance 48, first utmost point of this transistor 47 is electrically connected at this first and second metal oxide semiconductcor

field effect transistor

44,45 the control utmost point (not marking component symbol), second utmost point of this transistor 47 is ground connection then, and this second resistance 48 is electrically connected between the control end 43 of the 3rd utmost point of this transistor 47 and this adverse current preventer.

The emission mode of the utility model double-direction radio charge and discharge device the first embodiment:

Because this double-direction radio charge and discharge device is defaulted as receiving mode, therefore, if want to enter emission mode, then must press control switch 5 and switch.

Suppose that one is provided with the portable electric product 9 of the utility model double-direction radio charge and discharge device, when wish is provided with the electronic product of wireless charging device by wireless way for transmitting to another with self electric power, press first the conducting that control switch 5 makes, the electricity of battery 93 is in through behind the control switch 5, the 3rd control pin of can flowing through again (that is: emitting identification control pin) 13 and allow logic control element 1 identification switch at present emission mode.Originally battery 93 electric power that blocked by the first adverse current preventer 4, after control switch 5 conductings, understand this first adverse current preventer 4 of conducting and allow electric power pass through, follow the first metal oxide semiconductcor field effect transistor 35 that passes through buck unit 3 and the supply pin 17 that is connected to logic control element 1, to power to logic control element 1.And utilize the block of the second adverse current preventer 4a and the electric power of battery 93 is unlikely and recharge.

When logic control element 1 identification is emission mode at present, can also utilize emission maintenance loop (using as continuing to remain on emission mode) 19 and continue to allow the emission of the 4th control pin 14 keep signal to offer the 3rd control pin 13 always, reach the effect that emission keeps, thereby can remain on emission state.

Whether the opposite side that the detecting pin 18 of this logic control element 1 can be detected the wireless receiving transmitter unit 2 of tool antenna in this exists electronic product to be filled, namely do not control and stop emission if detect then logic control element 1, whether described detecting is to truly have a load to exist by the opposite side that detecting pin 18 is detected this wireless receiving transmitter unit 2:

If non-loaded: as namely to stop emission;

If load is arranged: this logic control element with 1 by its first and

second control pin

11,12 and output PWM (Wave-wide regulation controlled electric) signal removes to drive first and second metal oxide semiconductcor

field effect transistor

35,36 in this buck unit 3.By these PWM signals so that first, two metal oxide semiconductcor

field effect transistors

35,36 one open-one closes that can interlock with very high frequency constantly, when the second metal oxide semiconductcor field effect transistor 36 is the pass for opening the first metal oxide semiconductcor field effect transistor 35, owing to being ground connection, an end of the second metal oxide semiconductcor field effect transistor 36 and battery 93 forms a loop, thereby make the electric power of battery 93 can be via the inductance 37 of the first adverse current preventer 4 and buck unit 3, with second metal oxide semiconductcor field effect transistor 36 of flowing through, thereby to inductance 37 chargings; When the first metal oxide semiconductcor field effect transistor 35 is the pass for opening the second metal oxide semiconductcor field effect transistor 36, from the electricity of battery 93 by behind the inductance 37, change and walk the first metal oxide semiconductcor field effect transistor 35, the inductance 37 that has charged can externally be discharged through wireless receiving transmitter unit 2.

In other words, opened for one open-one close and closes one by first and second metal oxide semiconductcor

field effect transistor

35,36, inductance 37 is charged and allow inductance 37 discharges.When having electric current to pass through coil in the wireless receiving transmitter unit 2, this coil can produce the magnetic line of force, and the electronic product of opposite side then can convert electric current to after sensing this magnetic line of force.

When emission, by battery 93 to wireless receiving transmitter unit 2, first and second metal oxide semiconductcor field effect transistor 35 in the buck unit 3 that is passed through therebetween, 36 is boost (for example by the direct current of 3.6～4.2V, boosting is the alternating current about 5V); Otherwise, be step-down by wireless receiving transmitter unit 2 to 93 on battery.

If described first and second metal oxide semiconductcor

field effect transistor

35,36 wherein one are when the control buck, wherein another one is then in control synchronous rectification.

The receiving mode of the utility model double-direction radio charge and discharge device the first embodiment:

When the wireless receiving transmitter unit 2 of the portable electric product 9 that is provided with the utility model double-direction radio charge and discharge device when receiving electric that opposite side launches, power to logic control element 1 via supply pin 17 first, then, received electricity will be through buck unit 3 and by step-down.

Logic control element 1 can also be kept loop 19 and be controlled the first adverse current preventer 4 by emission is O FF; and the control signal of being exported by the 5th control pin 15 of logic control element 1 and to control the second adverse current preventer 4a be ON; thereby the electricity after the step-down is powered to the battery 93 of portable electric product 9 via the second adverse current preventer 4a and in order to the first electrochemical capacitance 6 (preferably in addition again through the 3rd adverse current preventer 4b) that absorbs surging; certainly; therebetween can be through the protection of protective circuit 92 and the charging scope of battery 93 (for example: the direct current of 4～6V) is limited in the preset range; when battery 93 is filled when full; protective circuit 92 is that control stops charging; if and the electronic product of opposite side is under detecting less than loaded situation; also can automatically stop discharge (even when discharge; when if the electric weight of self battery has been lower than a set point, also can stop discharge).

When logic control element 1 switches to emission mode, its 4th control pin 14 will continue to export an emission and keep signal, to keep the first adverse current preventer 4 as ON; When logic control element 1 switches to receiving mode, its 5th control pin 15 will continue to export one and receive the maintenance signal, to keep the second adverse current preventer 4a as ON.

The second embodiment

See also shown in Figure 3, the double-direction radio charge and discharge device of the utility model the second embodiment is identical with the first embodiment, difference is in this second real embodiment does not have control switch 5 among the first embodiment, and the control that changes the control signal of being exported with portable electric product 9 replaces the control switch 5 of the first embodiment.

Such as figure, the circuit arrangement 91 of this portable electric product 9 has a signal output end 911, to control signal through the controlling (for example: press the physical button of portable electric product 9 or touch-control one virtual key by the Touch Screen of portable electric product 9) of staff via signal output end 911 outputs one of this circuit arrangement 91.

Among the second embodiment of the utility model double-direction radio charge and discharge device, the Section Point 431 of described the first adverse current preventer 4 is electrically connected at this signal output end 911, allows logic control element 1 (via the 3rd control pin 13) switch to emission mode with the control signal that utilizes this signal output end 911 to be exported.

In addition, among above-mentioned first and second embodiment, the utility model double-direction radio charge and discharge device also comprises one and receives or emission mode selected cell (comprising: receive or emission mode selector switch 18b, reception or emission mode selection signal 18f), preferably then also includes a main switch 10, cell voltage detecting pin 16a and a temperature sensor 17b.

This reception or emission mode selected cell are electrically connected at (comprising: receive or emission mode selector switch 18b, reception or emission mode selection signal 18f) reception or the emission mode of this logic control element 1 and detect between the discharge end 931 of pin 18a and described battery 93, one receive or emission mode selected cell and optionally to control the utility model double-direction radio charge and discharge device be emission mode or receiving mode thus, wherein this reception or emission mode selection signal 18f is a foreign signal.Moreover, this logic control element 1 also has a lectotype and automatically replies the module (not shown), this lectotype automatically replies module and also is electrically connected at this this reception or emission mode detecting pin 18a, make and receive or the emission mode selected cell automatically replies module with the institute lectotype and electrically communicates, when selecting receiving mode, if former thereby convert to after the emission mode because of some, can utilize this lectotype to automatically reply module and decide when automatically revert to originally selected receiving mode, otherwise, if also can utilize this lectotype to automatically reply module when selecting emission mode and automatically reply.In addition, above-mentioned control switch 5 also can cooperate this reception or emission mode selected cell to use, that is: when user selection receive or emission mode after, can utilize control switch 5 and start receiving mode at once or start receiving mode at once.

Preferably, the upstream of this reception or emission mode selected cell also electrically is serially connected with a diode 18c and one the 3rd resistance 18d, and the downstream of this reception or emission mode selected cell then also electrically is serially connected with one the 4th resistance 18e.

This main switch 10 is electrically connected between the discharge end 931 of this reception or emission mode selector switch 18b and described battery 93, a main switch 10 and start or close the utility model double-direction radio charge and discharge device thus, in brief, when main switch 10 is unlatching (ON), energy normal transmission, reception (and could further utilize this reception or emission mode selector switch 18b to carry out model selection this moment); Otherwise, when main switch 10 when closing (OFF), then can forbid emission, receive.

This logic control element 1 can also have cell voltage detecting pin 16a, and this cell voltage detecting pin 16a is electrically connected at the discharge end 931 of described battery 93 and reads the voltage of this battery 93.Thus, can avoid self electric power already in the not enough situation, also discharge to other device; Or can also be by the lasting detecting of described cell voltage in the middle of generating, and self electric power be discharged to the lowest limit before stopped discharge; Otherwise, certainly also can avoid self battery 93 can be overcharged (overcharging).

This logic control element 1 can also have a temperature detecting pin 17a, this temperature detecting pin 17a is electrically connected with a temperature sensor 17b and the temperature of sensing the utility model double-direction radio charge and discharge device, for example: the easiest heating part that this temperature sensor 17b is positioned over the utility model double-direction radio charge and discharge device, whether too high when launching or receive, can continue the detecting temperature, prevent that overheated situation from occuring thereby reach.Preferably, this temperature sensor 17b is a thermistor, and the resistance of these a little thermistors can change because of the variation of temperature, is beneficial to sensing temperature; In addition, this thermistor further is parallel to the end of one the 5th resistance 17c, and the another end of the 5th resistance 17c then also is electrically connected between the second voltage adjusting end 32 of the supply pin 17 of this logic control element 1 and this buck unit 3.

In sum, the characteristics of the double-direction radio charge and discharge device of the utility model portable electric product are: belong to double-direction radio by the utility model double-direction radio charge and discharge device and discharge and recharge, be wireless charging, also can wirelessly discharge so that be provided with the portable electric product 9 of the utility model double-direction radio charge and discharge device, and also have the charge and discharge model selection and institute's lectotype automatically replies function, really very convenient in operation; To be lower than battery by the special setting position of electrochemical capacitance and the impedance of electrochemical capacitance, therefore, be recharged Shi Huixian electrochemical capacitance is charged, allow electrochemical capacitance keep out the surging problem in each when charging thereby reach, relatively can avoid the accumulation formula that charging causes to battery at every turn to damage; Adverse current by first and second adverse current preventer 4,4a prevents effect, can avoid electric leakage, relatively has electricity saving function; Be a kind of buck unit with synchronous rectification by buck unit 2, preferably be metal oxide semiconductcor field effect transistor formula synchronous rectification (MOSFET synchronous rectification), and promote according to this efficient of buck; Also prevented or as the significant components of switch as adverse current with first and second metal oxide semiconductcor field effect transistor 44,45 by described the first～three adverse current preventer 4,4a, 4b, the electricity of institute's loss is lower when making conducting, so discharging efficiency can be higher, thereby promote the wireless charging discharging efficiency; By having set up main switch 10 and reception or emission mode selector switch 18b, to allow the user select voluntarily to switch to receiving mode or emission mode, as for the master switch in 10 similar electric power systems of main switch, that is: have the convenience that the single switch of control just can start or cut out described double-direction radio charging/discharging function, the practicality effect, when main switch 10 is energy normal transmission when opening (ON), receive (and could further utilize this reception or emission mode selector switch 18b to carry out model selection this moment), and when main switch 10 when closing (OFF), then can forbid emission, receive; By having set up the protective circuits such as temperature detecting and cell voltage detecting; in emission or receiving course, protecting, thereby the utility model double-direction radio charge and discharge device had to avoid overheated and can avoid over-discharge can or the situation that overcharges of self battery 93.

The above, it only is better possible embodiments of the present utility model, non-so namely limit to claim of the present utility model, the equivalent structure that such as uses the utility model specification and accompanying drawing content to do changes, and all reason is with being contained in the claim scope of the present utility model.

Claims

1. a double-direction radio charge and discharge device is characterized in that, for being applied to a portable electric product with circuit arrangement, this circuit arrangement is electrically connected with a receiving end and a battery, and this double-direction radio charge and discharge device comprises:

2. double-direction radio charge and discharge device according to claim 1, wherein, this reception or emission mode selected cell are one to receive or emission mode selector switch and receives or emission mode is selected one of them of signal.

3. double-direction radio charge and discharge device according to claim 1, wherein, described circuit arrangement has a protective circuit, and this protective circuit is electrically connected between described battery and the receiving end.

4. double-direction radio charge and discharge device according to claim 1, wherein, this buck unit is a kind of buck unit with synchronous rectification, and is the synchronous rectification of metal oxide semiconductcor field effect transistor formula.

5. double-direction radio charge and discharge device according to claim 4, wherein, this buck unit with synchronous rectification comprises the each other metal oxide semiconductcor field effect transistor of series aiding connection of an inductance and two, each tool one control utmost point of this two metal oxide semiconductcor field effect transistor, this two control utmost point is electrically connected at respectively two control ends of this buck unit, the end of this two metal oxide semiconductcor field effect transistor after series connection is electrically connected at described the second voltage adjusting end, and another end is ground connection then; One end of this inductance is electrically connected at described the first voltage adjusting end, and another end then is electrically connected between this two metal oxide semiconductcor field effect transistor.

6. double-direction radio charge and discharge device according to claim 1, wherein, comprise one the 3rd adverse current preventer, the 3rd adverse current preventer has an arrival end, a port of export and a control end, the port of export of the 3rd adverse current preventer and arrival end are electrically connected at respectively the receiving end of described circuit arrangement and the port of export of described the second adverse current preventer, and the control end of the 3rd adverse current preventer then is electrically connected at the 6th control pin of this logic control element.

7. double-direction radio charge and discharge device according to claim 6, wherein, respectively this adverse current preventer has one first resistance and two toward each other to the metal oxide semiconductcor field effect transistor of connecting, the two ends of this two metal oxide semiconductcor field effect transistor after series connection are arrival end and the port of export of described adverse current preventer, each tool one control utmost point of this two metal oxide semiconductcor field effect transistor, this two control utmost point is electrically connected at the control end of this adverse current preventer, one end of this first resistance is electrically connected between this two metal oxide semiconductcor field effect transistor, and another end also is electrically connected at the control end of this adverse current preventer.

8. double-direction radio charge and discharge device according to claim 7, wherein, respectively this adverse current preventer has a transistor and one second resistance, this transistorized first utmost point is electrically connected at the control utmost point of this two metal oxide semiconductcor field effect transistor, this transistorized second utmost point ground connection, this second resistance is electrically connected between the control end of this transistorized the 3rd utmost point and this adverse current preventer.

9. double-direction radio charge and discharge device according to claim 1, wherein, the 4th control pin of this logic control element is electrically connected at the 3rd control pin with circuit type.

10. double-direction radio charge and discharge device according to claim 1, wherein, this control switch is an automatic reset switch.

11. double-direction radio charge and discharge device according to claim 1, wherein, the upstream of this reception or emission mode selector switch electrically is serially connected with a diode and one the 3rd resistance, and the downstream of this reception or emission mode selector switch then electrically is serially connected with one the 4th resistance.

12. double-direction radio charge and discharge device according to claim 1, wherein, this logic control element has cell voltage detecting pin, and this cell voltage detecting pin is electrically connected at the discharge end of described battery and reads the voltage of this battery.

13. double-direction radio charge and discharge device according to claim 1, wherein, this logic control element has a temperature detecting pin, and this temperature detecting pin is electrically connected with a temperature sensor and the temperature of the described double-direction radio charge and discharge device of sensing.

14. double-direction radio charge and discharge device according to claim 13, wherein, this temperature sensor is a thermistor.

15. double-direction radio charge and discharge device according to claim 14, wherein, this thermistor is parallel to an end of one the 5th resistance, and the another end of the 5th resistance is electrically connected between the second voltage adjusting end of the supply pin of this logic control element and this buck unit.