CN205911777U - A device and electronic equipment for battery charges - Google Patents
A device and electronic equipment for battery charges Download PDFInfo
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- CN205911777U CN205911777U CN201620706312.9U CN201620706312U CN205911777U CN 205911777 U CN205911777 U CN 205911777U CN 201620706312 U CN201620706312 U CN 201620706312U CN 205911777 U CN205911777 U CN 205911777U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The utility model discloses a device and electronic equipment for battery charges. The device includes: the first end and the anodal of charging source (110) of electromagnetic conversion unit (120) are connected, switching element (130) are connected between second end -node N1 and earthing terminal at electromagnetic conversion unit (120), diode D1's anodal connected node N1, negative pole connected node N2, electric energy temporary storage location (180) are connected between node N2 and earthing terminal, current detection unit (140) are connected between node N2 and N3, voltage detection unit (150) are connected between node N3 and earthing terminal, the control unit (160) connect in switching element (130) for control charging current's intensity or control the voltage at rechargeable battery (170) both ends. According to the utility model discloses a device can be accomplished and filled battery voltage and be higher than charging of charging source voltage, and simple structure is and charge efficiency is high.
Description
Technical field
The utility model is related to cell art, more particularly, to for be electrically charged cell voltage be higher than charge power supply
Device and electronic equipment that the battery of voltage is charged.
Background technology
With the development of electronic information technology, the application of electronic equipment is increasingly extensive.The power supply that electronic equipment is used
Species is also increasingly abundanter, however, the power supply of each class of electronic devices is all often special, this is due to electronic equipment
Internal battery voltage difference caused by.At present, power supply market sold mainly includes 5v usb power supply, 19v notes
This computer power, 12v power supply and some power source specials etc..Accordingly, it would be desirable to relatively general charging circuit or device are to meet
The demand that user is charged to the battery with different voltages.
Additionally, from the point of view of current trend, 5v usb power supply has occupied staple market.But for most sound equipment,
The electronic products such as panel computer, portable power source, computer and mobile digital telephone, the voltage that it uses is usually above 5v, therefore, no
Method uses 5v usb power source charges.In the prior art, when the battery being higher than power supply for voltage is charged, generally using straight
Circulation DC voltage booster circuit, for example, 5v is risen to the magnitude of voltage required for charging circuit, recycles the power supply of this magnitude of voltage to filling
Circuit is powered, and is charged with complete battery pair, this charging circuit being depressured again that first boosts, and circuit design is extremely complex, cost
Higher.In addition, if the switching frequency of boost process and charging process is asynchronous, electromagnetic interference, electromagnetic radiation, electricity also can be caused
The problems such as road components and parts generate heat, charging conversion efficiency is relatively low, charging current is excessive.
Accordingly, it would be desirable to improve to prior art to solve at least one technical problem above-mentioned.
Content of the invention
A purpose of the present utility model is to provide a kind of new solution for battery charging, can be for being electrically charged
Cell voltage is higher than that the battery of supply voltage is charged, and improves charge efficiency.
According to first aspect of the present utility model, there is provided a kind of device for battery charging.This device includes charging
Power supply, electromagnetic conversion unit, switching device, diode d1, electric energy temporary storage location, current detecting unit, voltage detection unit with
And control unit, wherein:
The first end of described electromagnetic conversion unit is connected with the positive pole of charge power supply, for provide described charge power supply
Electric energy is converted to magnetic energy storage or magnetic energy is converted to electric energy to provide battery charging required voltage；
Described switching device is connected between the second end node n1 of described electromagnetic conversion unit and earth terminal, wherein, when
During described switch device conductive, described electromagnetic conversion unit converts electrical energy into magnetic energy and is stored, when described switching device
During disconnection, magnetic energy is converted to electric energy to provide battery charging required voltage by described electromagnetic conversion unit；
Positive pole connecting node n1 of described diode d1, negative pole connecting node n2；
Described electric energy temporary storage location is connected between node n2 and earth terminal, for temporary transient storage by described electromagnetic conversion list
The electric energy that the magnetic energy of unit is changed；
Described current detecting unit is connected between node n2 and n3, for detecting the intensity of charging current；
Described voltage detection unit is connected between node n3 and earth terminal, for detecting the electricity at described rechargeable battery two ends
Pressure；
Described control unit is connected to described switching device, is arranged to the electricity being detected based on described current detecting unit
The charging voltage that intensity of flow and voltage detection unit are detected is exporting the signal with different duty to control charging current
Intensity or control described rechargeable battery two ends voltage.
Preferably, described electromagnetic conversion unit is that have the inductance of magnetic core.
Preferably, described electric energy temporary storage location is electric capacity.
Preferably, described switching device is n-channel mos pipe, and its source electrode is connected to earth terminal, and drain connecting node n1, grid
Pole connects described control unit.
Preferably, second resistance r2 of the series connection that described voltage detection unit includes being connected between node n3 and earth terminal
With 3rd resistor r3, wherein, the magnitude of voltage between described second resistance r2 and 3rd resistor r3 exports to described control unit.
Preferably, described control unit includes recharge logic analysis circuit and comparator, described recharge logic analysis circuit
The charging voltage that the current strength being detected based on described current detecting unit and voltage detection unit are detected is described to control
Comparator, the control based on described recharge logic analysis circuit for the described comparator and reference waveform export and have different duties
The signal of ratio, to control the intensity of charging current or the voltage controlling rechargeable battery two ends.
Preferably, described recharge logic analysis circuit is single-chip microcomputer or logic gates or compares amplifying circuit.
Preferably, described current detecting unit includes for first resistor r1 of current sampling and is used for amplifying described first
The current sampling amplifying circuit of the voltage signal at resistance r1 two ends.
Preferably, described current sampling amplifying circuit is transistor amplifier or operation amplifier circuit.
Preferably, described device also includes the first electric capacity c1 and the second electric capacity c3, and described first electric capacity c1 is parallel to institute
State charge power supply two ends, described second electric capacity c3 is connected between node n3 and earth terminal.
Preferably, described device also includes charging display unit, and described charging display unit connects to described control unit
To receive rechargeable battery information and to be shown.
Preferably, when the voltage that described control unit detects rechargeable battery is less than first voltage threshold value, export the cycle
Property pulse signal carries out pulse charging to control.
Preferably, when the voltage that described control unit detects rechargeable battery is higher than first voltage threshold value, control is carried out
Constant current type charges.
Preferably, when the voltage that described control unit detects described rechargeable battery is higher than second voltage threshold value, control
Carry out constant voltage formula charging, described rechargeable battery both end voltage no longer rises.
Preferably, when constant pressure type charges, when the intensity that described control unit detects charging current is less than the first electric current
During threshold value, control and stop charging.
According to second aspect of the present utility model, there is provided a kind of electronic equipment, it is included according to of the present utility model
On the one hand the device charging for battery described in.
Inventor of the present utility model finds, in the prior art, when the battery higher than supply voltage is charged,
Using the charging circuit being depressured again that first boosts, circuit is complicated, and charge efficiency is low.And according to charging device of the present utility model, only
There are boost process, charging high conversion efficiency.
By the detailed description to exemplary embodiment of the present utility model referring to the drawings, other of the present utility model
Feature and its advantage will be made apparent from.
Brief description
Combined in the description and the accompanying drawing of the part that constitutes specification shows embodiment of the present utility model, and
And be used for explaining principle of the present utility model together with its explanation.
Fig. 1 is the schematic block diagram of the device being charged for battery according to the utility model embodiment.
Fig. 2 is a kind of schematic circuit diagram of the enforcement structure according to the device for battery charging of the present utility model.
Specific embodiment
To describe various exemplary embodiment of the present utility model now with reference to accompanying drawing in detail.It should also be noted that it is unless another
Illustrate outward, the positioned opposite, numerical expression of the part otherwise illustrating in these embodiments and step and numerical value do not limit
Make scope of the present utility model.
Description only actually at least one exemplary embodiment is illustrative below, never as to this practicality
Any restriction that is new and its applying or use.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
When in the case of, described technology, method and apparatus should be considered a part for specification.
In all examples with discussion shown here, any occurrence should be construed as merely exemplary, and not
It is as restriction.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter expression similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then do not need it is further discussed in subsequent accompanying drawing.
Fig. 1 is the schematic block diagram of the device being charged for battery according to the utility model embodiment.Wherein, can be used for filling
The battery of electricity includes lithium battery, lead-acid battery, nickel-cadmium cell etc..
According to Fig. 1, this device includes charge power supply 110, electromagnetic conversion unit 120, switching device 130, diode
D1, electric energy temporary storage location 180, current detecting unit 140, voltage detection unit 150 and control unit 160.
The first end of described electromagnetic conversion unit 120 is connected with the positive pole of charge power supply 110, for by described charge power supply
The electric energy of 110 offers is converted to magnetic energy storage or magnetic energy is converted to electric energy to provide battery charging required voltage.
Described charge power supply 110 is power supply adaptor or the power supply of usb interface, for providing the electric energy charging.Charge electricity
Source 110 can be built according to electric supply installation of the present utility model, or external electric supply installation.
Described switching device 130 is connected between the second end node n1 and earth terminal of described electromagnetic conversion unit 120,
Wherein, when described switching device 130 turns on, described electromagnetic conversion unit 120 converts electrical energy into magnetic energy and is stored, when
When described switching device 130 disconnects, magnetic energy is converted to electric energy to provide needed for battery charging by described electromagnetic conversion unit 120
Voltage.
In one example, described electromagnetic conversion unit 120 is that have the inductance of magnetic core, for example, from soft magnet material
Magnetic core.
For example, when described switching device 130 turns on, to induction charging, described inductance converts electrical energy into magnetic energy and goes forward side by side
Row storage, the energy of inductance conversion and storage is relevant with the current value flowing through this inductance and inductance value.In described switching device 130
During disconnection, inductive discharge, the voltage of inductance output is relevant with current value, inductance value and load resistance.Therefore, in switching device
During 130 disconnection, the output voltage of inductance is added with the voltage of charge power supply 110 for providing charging voltage for rechargeable battery 170.
Wherein it is possible to select suitable inductance value according to practical application.Inductance value is bigger, and efficiency is higher, driving current
Less, inductance value is less, and efficiency is lower, driving current is bigger, is more easily saturated, and inductance saturation may result in magnetic core mistake
Heat.
Positive pole connecting node n1 of described diode d1, negative pole connecting node n2.In this way, electromagnetic conversion unit
120 and the electric current that provided of charge power supply 110 can flow through diode d1, and prevent the backflow of electric current.
In one example, diode d1 is quick Schottky diode, and Schottky diode forward voltage drop is little, low in energy consumption
And efficiency high.
Described electric energy temporary storage location 180 is connected between node n2 and earth terminal, stores described electromagnetic conversion for temporary transient
The electric energy that unit 120 is provided.
In one example, described electric energy temporary storage location 180 is electric capacity.Described electric capacity can temporarily store electric charge (i.e. electricity
Can), form certain voltage, and when its load voltage is less than capacitance voltage, discharge electric energy.From the foregoing, described electric capacity
The electric energy coming from electromagnetic conversion unit 120 (such as inductance) can be stored, and leading of controlling switch device 130 can be passed through
On and off is opened, and makes the voltage at described electric capacity two ends be increased to desirable value.
Described current detecting unit 140 is connected between node n2 and n3, for the voltage between detection node n2 and n3
Difference, and obtain the current strength of charge circuit accordingly.
For example, described current detecting unit 140 includes for first resistor r1 of current sampling and is used for amplifying described
The current sampling amplifying circuit of the voltage signal at one resistance r1 two ends.
For example, described first resistor r1 for current sampling refers to the voltage by the r1 two ends of resistance known to measurement,
Calculate the electric value flowing through resistance r1 according to Ohm's law, you can obtain the current strength of charge circuit.
In order to improve the conversion efficiency of charging process, the resistance of first resistor r1 is very little, typically in several milliohms to tens
Between milliohm, for example, select first resistor r1 in 0.01 Europe.Further, since the electric current flowing through first resistor r1 is likely to very
Little, therefore, the voltage at first resistor r1 two ends may be relatively low, in order to improve the accuracy of detection of current strength, can arrange electric current
Sampling amplification circuit is to amplify the voltage signal at first resistor r1 two ends.
For example, described current sampling amplifying circuit includes but is not limited to transistor amplifier or operation amplifier circuit.
Described voltage detection unit 150 is connected between node n3 and earth terminal, for detecting 170 liang of described rechargeable battery
The voltage at end.For example, the partial pressure of the voltage at direct detection battery 170 two ends or detection battery 170 both end voltage.
For example, the second resistance of the series connection that described voltage detection unit 150 includes being connected between node n3 and earth terminal
R2 and 3rd resistor r3, wherein, the magnitude of voltage between described second resistance r2 and 3rd resistor r3 feeds back to described control unit.
For example, described partial pressure value can directly be changed by described control unit 160 using the partial pressure value being obtained or using voltage divider principle
Voltage for rechargeable battery 170 two ends.
Described control unit 160 is connected to described switching device 130, is arranged to based on described current detecting unit 140
The charging voltage that the current strength being detected and voltage detection unit 160 are detected to export the signal with different duty with
Control the intensity of charging current or the charging voltage controlling described rechargeable battery 170.
Described switching device 130 is gate-controlled switch.For example, including but not limited to various types of mos pipes or triode.
For example, described switching device 130 is n-channel mos pipe, and its source electrode is connected to earth terminal, and drain connecting node n1, grid
Pole connects described control unit 160.
Described control unit 160 can be detached device or integrated device, for example, single-chip microcomputer or microprocessor.
In one example, described control unit 140 includes recharge logic analysis circuit and comparator, described recharge logic
Current strength that analysis circuit is detected based on described current detecting unit 140 and the charging that voltage detection unit 150 is detected
Controlling described comparator, the control based on described recharge logic analysis circuit for the described comparator and reference waveform are Lai defeated for voltage
Go out there is the signal of different duty, to control the intensity of charging current or the voltage controlling rechargeable battery 170 two ends.
Wherein, described reference waveform includes triangular wave or sawtooth waveforms etc., and it, as a road input of comparator, works as triangular wave
Or sawtooth signal be higher than comparator the other end input when, comparator export high level；Conversely, then exporting low level.Pass through
This mode, with the level change of comparator other end input signal, comparator can the variable signal of output duty cycle.
In one example, described recharge logic analysis circuit includes but is not limited to single-chip microcomputer or logic gates or compares
Amplifying circuit.
In another example, described device also includes the first electric capacity c1 and the second electric capacity c3, described first electric capacity c1
It is parallel to the two ends of described charge power supply 110, described second electric capacity c3 is connected between node n3 and earth terminal.
Described first electric capacity c1 is used for leaching the alternating current produced by feeder line of charge power supply 110.
Described second electric capacity c3 is used for energy storage and filtering, and when not accessing rechargeable battery 170, the second electric capacity c3 is used for stable
Output voltage.It will be understood by those of skill in the art that when not accessing rechargeable battery 170, described voltage detection unit 150 institute
The voltage of detection is the voltage at electric capacity c3 two ends.
In one example, described device also includes charging display unit, and described charging display unit connects to described control
Unit 160 processed is to receive rechargeable battery information and to be shown.For example, the electricity of battery is shown using diode or digital circuit
The information such as grade, battery status and charging voltage.
During battery 170 is charged, need to consider the charge efficiency of battery, also need to prevent simultaneously battery because
Electric current is excessive or voltage is excessive and damages.For example, it is possible to the current strength being detected based on current detecting unit 140 and voltage inspection
Survey the voltage at battery two ends that unit 150 detected to control charging process.It is for instance possible to use three stage charging system mode.Tool
Body includes:
First stage, when the voltage that described control unit 160 detects rechargeable battery 170 two ends is less than first voltage threshold value
When, output cyclic pulse signal carries out pulse charging to control.In this stage, being filled with electricity increases, and cell voltage rises,
Control charging current can not be excessive bad to avoid battery to fill simultaneously.
Second stage, when the voltage that described control unit 160 detects rechargeable battery 170 two ends is higher than first voltage threshold value
When, control and carry out constant current type charging.In this stage, charging current keeps constant, and being filled with electricity increases, and cell voltage is gradually gone up
Rise.
Wherein, above-mentioned first voltage threshold value is also referred to as constant current and limits magnitude of voltage, that is, when the voltage at battery 170 two ends is less than perseverance
During ductility limit voltage, using small current pulse charging, when the voltage at battery 170 two ends is higher than that constant current limits voltage, adopt
Constant current is charged.For example, for 5v battery, constant current limits voltage and can be predefined for 3.3v, for the battery of 12v, constant current
Limit voltage and can be set as 9.6v.
Phase III, when the voltage that described control unit 160 detects rechargeable battery 170 two ends is higher than second voltage threshold value
When, control and carry out constant voltage formula charging, the voltage at rechargeable battery 170 two ends no longer rises.In this stage, charging voltage keeps permanent
Fixed, it is filled with electricity and continues to increase, charging current tapers into.For example, for the battery of 5v, second voltage threshold value may be set to
4.2v, for the battery of 12v, second voltage threshold value may be set to 14.4v.
Further, after battery electric quantity is full of, stopping can be controlled to continue to charge to avoid battery loss.
For example, when the intensity that described control unit 160 detects charging current is less than the first current threshold, control and stop
Charge.Wherein, described first current threshold could be arranged to 1/10 of electric current during constant current charge.
It will be understood by those of skill in the art that the value of above-mentioned current threshold and/or voltage threshold, it is only intended to
Bright embodiment, and not as to restriction of the present utility model.In actual applications, above-mentioned threshold value, can charge according to specific
Battery variety or the type of device according to charging device of the present utility model or value and different.
As can be seen from the above scheme, inductance type liter can be utilized according to the device for battery charging of the present utility model
Pressure principle, low-voltage is directly increased to the magnitude of voltage being electrically charged needed for pond, directly battery is charged.In addition, by increasing electricity
Stream detector unit and voltage detection unit, the intensity of the magnitude of voltage and charging current of monitoring rechargeable battery two ends by control unit is come
Adjust or determine charged state it is provided that charge efficiency prevent cell damage.Further, since being filled according to of the present utility model
Electric installation only one of which oscillating circuit, a switching device, there is not switch asynchrony phenomenon, therefore, charging conversion efficiency is relatively
High.
Pass through to change the value of device according to the device for battery charging of the present utility model, be adapted to different occasions
Charge, for example, be applied to small-power and charge or high-power charger.
In order to further clearly above-mentioned for battery charger, below according to a specific embodiment, its work to be described
Make principle.
Fig. 2 is a kind of schematic circuit diagram of the enforcement structure according to the device for battery charging of the present utility model.
As shown in Fig. 2 the operation principle that battery is charged using inductance type boosting principle specific as follows (with to 5v electricity
As a example charging in pond):
For example, when not accessing rechargeable battery, the controlled first system conducting of switching device tr1, charge power supply dc in, inductance
L1 and tr1 forms loop, and the voltage at l1 two ends gradually rises, and l1 converts electrical energy into Magnetic Energy Storage on the inductance core of l1；
Before l1 reaches saturation, tr1 is controlled disconnection, and now, dcin inductance l1, diode d1 and electric capacity c2 form loop, inductance
Magnetic energy on l1 is converted to electric energy rectified diode d1 and electric capacity c2 is charged, and in the process, the voltage at c2 two ends constantly rises
Height, then charges to c3 through current sampling resistor r1, and the voltage (sampling voltage) on c3 feeds back to after resistance r2 and r3 partial pressure
Pwm (pulsewidth modulation) comparator, the triangular signal being produced with triangular signal generator is compared, and therefore, comparator is defeated
Go out the square-wave signal that dutycycle is controlled by sampling voltage, with the rising of sampling voltage, the ON time of tr1 shortens.C3's
During voltage gradually rises, tr1 ON time shortens, and the effect of constant voltage is played in shortening of tr1 ON time, therefore,
The voltage at c3 two ends progressivelyes reach pressure constant state.
After rechargeable battery bt1 is accessed charging circuit, the voltage on c3 can be gradually reduced to the electricity close to bt1 two ends
Pressure, at this moment the voltage sampling of r2 and r3 is ineffective, r1 has larger current flow through formation pressure drop, and in order to improve charging process
Conversion efficiency, usual resistance r1 value is very little, such as 10 to 100 milliohms, and the pressure drop at therefore r1 two ends is very little, through being used for
The current sampling amplifying circuit amplifying described sampling current signal, by after the voltage amplification at r1 two ends, equally delivers to pwm end and three
Relatively, and when electric current becomes larger, tr1 ON time shortens angle Bob.Conversely, when electric current tapers into, tr1 ON time
Elongated, thus playing constant current effect.
Meanwhile, voltage sampling data and current sampling data are also output in recharge logic analysis circuit.Recharge logic
Analysis circuit is arranged to:
When cell voltage is less than minimum constant current voltage, such as 3.3v, then export periodically pulsing signal, for example, often
One pulse of output in 0.5 to 5 second, pulse width to control pwm comparator, and controlled and flows through battery between 0.1 to 1 second
Electric current very little, for example, generally 1/10 charging current.
With the carrying out charged, when the voltage of battery bt1 rises above a threshold value, for example, constant current limits voltage,
Recharge logic analysis circuit is arranged to not output signal, and now the feedback of only current sampling circuit works, whole charging
Circuit enters constant-current charge state.
When cell voltage continues to rise, for example, when rising to 4.2v (voltage sampling limit value), at this moment voltage sampling electricity
The feedback signal on road is more than the feedback signal of current sampling circuit, and the feedback of current sampling circuit is ineffective, battery bt1 two ends
Voltage be constant at the value of a fixation, charging process enters constant-voltage charge state, and electric current tapers into.
When current reduction is to a threshold value, for example, less than electric current during constant-current charge 1/10 when, recharge logic analyze
Circuit output shutdown signal (i.e. high-impedance state), thus closing pwm, stopping tr1 conducting, completing a charging process.
After charging complete, if battery does not take out, battery can be produced from power consumption because of internal resistance so that cell voltage drops
Low, when recharge logic analysis circuit detect cell voltage be less than setting value when, for example, when battery is full of voltage 90% when,
It is again started up constant-voltage charge state, go round and begin again circulation, here it is floating charge state.
In circuit shown in Fig. 2, electric capacity c1 is used for leaching.Commutation diode d1 is used for preventing in charging process, electric current
Backflow such that it is able to complete boost charge.Electric capacity c2 is also used for the energy storage of charge circuit.Electric capacity c3 acts primarily as and filters and steady
Determine the effect of output voltage.Current sampling amplifying circuit is set to be amplified the voltage at resistance r1 two ends, for example, amplifies
700 times.Can be realized using triode or operational amplifier.It is connected in parallel on resistance r2 and r3 at battery two ends, charge for obtaining
The voltage of battery or open-circuit voltage.
The utility model additionally provides a kind of electronic equipment, and this electronic equipment is included according to of the present utility model for battery
The device charging.This electronic equipment is, for example, sound equipment, wireless headset, portable power source, panel computer, digital mobile phone, notes
This computer, automobile, solar power system etc..
Although being described in detail to some specific embodiments of the present utility model by example, this area
It is to be understood by the skilled artisans that example above is merely to illustrate, rather than in order to limit scope of the present utility model.This
Field it is to be understood by the skilled artisans that can be in the case of without departing from scope and spirit of the present utility model, to above example
Modify.Scope of the present utility model is defined by the following claims.
Claims (16)
1. a kind of device for battery charging, including charge power supply (110), electromagnetic conversion unit (120), switching device
(130), diode d1, electric energy temporary storage location (180), current detecting unit (140), voltage detection unit (150) and control
Unit (160), wherein:
The first end of described electromagnetic conversion unit (120) is connected with charge power supply (110) positive pole, for by described charge power supply
(110) electric energy providing is converted to magnetic energy storage or magnetic energy is converted to electric energy to provide battery charging required voltage；
Described switching device (130) is connected between the second end node n1 of described electromagnetic conversion unit (120) and earth terminal, its
In, when described switching device (130) turns on, described electromagnetic conversion unit (120) converts electrical energy into magnetic energy and is stored,
When described switching device (120) disconnects, magnetic energy is converted to electric energy to provide battery to charge by described electromagnetic conversion unit (120)
Required voltage；
Positive pole connecting node n1 of described diode d1, negative pole connecting node n2；
Described electric energy temporary storage location (180) is connected between node n2 and earth terminal, for temporary transient storage by described electromagnetic conversion
The electric energy that the magnetic energy of unit (120) is changed；
Described current detecting unit (140) is connected between node n2 and n3, for detecting the intensity of charging current；
Described voltage detection unit (150) is connected between node n3 and earth terminal, for detecting described rechargeable battery (170) two
The voltage at end；
Described control unit (160) is connected to described switching device (130), is arranged to based on described current detecting unit
(140) charging voltage that the current strength being detected and voltage detection unit (160) are detected is exporting with different duty
Signal with control charging current intensity or control described rechargeable battery (170) two ends voltage.
2. device according to claim 1 is it is characterised in that described electromagnetic conversion unit (120) is the electricity with magnetic core
Sense.
3. device according to claim 1 is it is characterised in that described electric energy temporary storage location (180) is electric capacity.
4. it is characterised in that described switching device is n-channel mos pipe, its source electrode connects device according to claim 1
In earth terminal, drain connecting node n1, and grid connects described control unit (160).
5. device according to claim 1 is it is characterised in that described voltage detection unit (150) includes being connected to node
Second resistance r2 of the series connection between n3 and earth terminal and 3rd resistor r3, wherein, described second resistance r2 and 3rd resistor r3
Between magnitude of voltage export to described control unit (160).
6. device according to claim 1 is it is characterised in that described control unit (140) includes recharge logic analysis electricity
Road and comparator, current strength and electricity that described recharge logic analysis circuit is detected based on described current detecting unit (140)
Controlling described comparator, described comparator is divided pressure detector unit (150) charging voltage that detected based on described recharge logic
The analysis control of circuit and reference waveform exporting the signal with different duty, to control intensity or the control of charging current
The voltage at rechargeable battery (170) two ends.
7. device according to claim 6 is it is characterised in that described recharge logic analysis circuit is single-chip microcomputer or gate
Circuit or compare amplifying circuit.
8. device according to claim 1 is it is characterised in that described current detecting unit (140) includes taking for electric current
First resistor r1 of sample and the current sampling amplifying circuit for amplifying the voltage signal at described first resistor r1 two ends.
9. device according to claim 8 is it is characterised in that described current sampling amplifying circuit is transistor amplifier
Or operation amplifier circuit.
10. device according to claim 1 is it is characterised in that described device also includes the first electric capacity c1 and second electricity
Hold c3, described first electric capacity c1 is parallel to described charge power supply (110) two ends, described second electric capacity c3 is connected to node n3 and connects
Between ground terminal.
11. devices according to claim 1 it is characterised in that described device also includes charging display unit, described charging
Display unit connects to described control unit (160) to receive rechargeable battery information and to be shown.
12. devices according to claim 1 are it is characterised in that when described control unit (160) detects rechargeable battery
(170), when voltage is less than first voltage threshold value, output cyclic pulse signal carries out pulse charging to control.
13. devices according to claim 1 are it is characterised in that when described control unit (160) detects rechargeable battery
(170), when voltage is higher than first voltage threshold value, controls and carry out constant current type charging.
14. devices according to claim 1 it is characterised in that when described control unit (160) detect described charge electricity
When the voltage in pond (170) is higher than second voltage threshold value, controls and carry out constant voltage formula charging, described rechargeable battery (170) two ends electricity
Pressure no longer rises.
15. devices according to claim 1 it is characterised in that when constant pressure type charges, when described control unit (160)
When intensity charging current is detected is less than the first current threshold, controls and stop charging.
16. a kind of electronic equipments are it is characterised in that include the dress charging for battery any one of claim 1-15
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620706312.9U CN205911777U (en) | 2016-07-06 | 2016-07-06 | A device and electronic equipment for battery charges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620706312.9U CN205911777U (en) | 2016-07-06 | 2016-07-06 | A device and electronic equipment for battery charges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205911777U true CN205911777U (en) | 2017-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990879A (en) * | 2016-07-06 | 2016-10-05 | 歌尔股份有限公司 | Device for battery charging and electronic device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990879A (en) * | 2016-07-06 | 2016-10-05 | 歌尔股份有限公司 | Device for battery charging and electronic device |
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