CN205960679U - Battery is full of protection circuit and charger - Google Patents
Battery is full of protection circuit and charger Download PDFInfo
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- CN205960679U CN205960679U CN201620532013.8U CN201620532013U CN205960679U CN 205960679 U CN205960679 U CN 205960679U CN 201620532013 U CN201620532013 U CN 201620532013U CN 205960679 U CN205960679 U CN 205960679U
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Abstract
The utility model discloses a battery is full of protection circuit and charger, fill the power output interface that electric appliances has power supply processing module and is connected with this power supply processing module, this power output interface is used for connecting rechargeable battery, the battery is full of the protection circuit and includes voltage detection circuit and protection implementation of circuit, voltage detection circuit's sense terminal and power output interface connection, voltage detection circuit passes through the charging voltage that the power output interface detected rechargeable battery, voltage detection circuit's output and protection implementation of circuit's input are connected, protection implementation of circuit's output is connected with power supply processing module, protection implementation of circuit, a charging voltage reaches when predetermineeing charging voltage for detect rechargeable battery at voltage detection circuit, control power supply processing module stops power output. The utility model discloses the safety problem of avoiding the long continuous time of rechargeable battery to charge and probably cause, the security that improves the rechargeable battery charging process, extension rechargeable battery's life.
Description
Technical field
This utility model is related to charging technique field, and more particularly, to a kind of battery is full of protection circuit and charger.
Background technology
With the continuous development of portable type electronic product and electric product, use the product of rechargeable battery at present increasingly
Many, including：Mobile phone, flat board, digital camera, electric bicycle, balance car etc..These electric product are equipped with special filling
Electrical equipment is charged.And existing charger is after fully charged to rechargeable battery, that is, reach the specified ceiling voltage of rechargeable battery,
Namely when reaching the floating voltage of charger, the maximum output voltage phase of the voltage of rechargeable battery positive and negative end and charger
With now, output current of charger is zero, and rechargeable battery charging current is zero.But, due to the characteristic of rechargeable battery, that is,
After not having charging current to reach certain time length, charged battery voltage can reduce, now, if rechargeable battery is timely and charges
Device disconnects physical connection, then the output voltage of charger will be higher than charged battery voltage, and charger may proceed to rechargeable battery
Charge, until charged battery voltage rises to specified ceiling voltage again.And afterwards, aforementioned process can be repeated always, that is, fill
Electric current is intermittently present always.
The impact of the rechargeable battery to inferior quality for the above-mentioned charging modes, especially lithium battery is very big, the particularly later stage in life-span
Lithium battery group, increase with battery core internal flaw, internal electrical losses stream also can increase, during charging, charging-cell temperature can abnormal rise
High.Therefore, after fully charged, if rechargeable battery is not disconnected with charger in time, will be because of to rechargeable battery repeatedly
Charge the service life even overcharging and shortening rechargeable battery, and increases rechargeable battery probability on fire, when serious, or even to use
Family is brought safety hazard and fire is occurred.
Utility model content
Main purpose of the present utility model is to provide a kind of battery to be full of protection circuit and charger it is intended to avoid charging
Battery is in time and when charger disconnects, the safety problem that the long-time trickle charge of rechargeable battery may cause, and raising is filled
The safety of electric battery charging process, prevents rechargeable battery from overcharging simultaneously, extends the service life of rechargeable battery.
For achieving the above object, this utility model provides a kind of battery to be full of protection circuit, in charger, described
Charger has power supply processing module and the power output interface being connected with this power supply processing module, and this power output interface is used for
Connect rechargeable battery, described battery includes voltage detecting circuit and protection execution circuit, described voltage detecting full of protection circuit
The test side of circuit is connected with described power output interface, and described voltage detecting circuit passes through described power output interface and detects institute
State the charging voltage of rechargeable battery, the outfan of described voltage detecting circuit is connected with the input of described protection execution circuit；
The outfan of described protection execution circuit is connected with described power supply processing module；Described protection execution circuit, in described electricity
When pressing the charging voltage that testing circuit detects described rechargeable battery to reach preset charge voltage, control described power supply processing module
Stop power supply output.
Preferably, described power supply processing module has cathode output end and cathode output end, described power output interface tool
There are positive terminal and negative pole end；Described voltage detecting circuit include the first audion, first resistor, second resistance, 3rd resistor,
Four resistance, the 5th resistance, the 6th resistance, the 7th resistance, the first electric capacity, the first stabilivolt, the second stabilivolt, the 3rd stabilivolt,
The positive pole of the first controlled rectification element and the first operational amplifier, the first end of described first resistor and described power supply processing module
The positive terminal interconnection of outfan and described power output interface, the moon of the second end of described first resistor and described 3rd stabilivolt
The in-phase input end interconnection of pole, the first end of the 7th resistance and described first operational amplifier, the anode of described 3rd stabilivolt
It is grounded respectively with the second end of described 7th resistance；The in-phase input end of described first operational amplifier is also through described 3rd resistor
Ground connection；The inverting input of described first operational amplifier is defeated with the cathode output end of described power supply processing module and described power supply
The negative pole end interconnection of outgoing interface, the outfan of described first operational amplifier is successively through described second resistance and described first voltage stabilizing
The anode of pipe connects, and the negative electrode of described first stabilivolt is connected with the base stage of described first audion；Described first audion
Emitter stage is connected with the first end of described first resistor, the colelctor electrode of described first audion and the first of described 4th resistance
End, the first end interconnection of described 6th resistance；Second end of described 4th resistance is connected with the negative electrode of described second stabilivolt, institute
The anode stating the second stabilivolt is through described first capacity earth；Second end of described 6th resistance is through described protection execution circuit
Input is connected with the anode of described first controlled rectification element, the minus earth of described first controlled rectification element, and described
The controlled end of one controlled rectification element is connected with the first end of described 5th resistance, the second end of described 5th resistance and described the
The common port of two stabilivolts and described first electric capacity connects.
Preferably, described power supply processing module includes input rectifying filter unit, transformator output unit and control unit,
The input termination alternating current power supply of described input rectifying filter unit, the outfan of described input rectifying filter unit is defeated with transformator
The outfan going out unit connects, the outfan of described transformator output unit and power output interface and described control unit
Signal receiving end interconnects, and the control end of described control unit is connected with the controlled end of described transformator output unit, described protection
Execution circuit is connected between described input rectifying filter unit and transformator output unit, and is connected with described control unit.
Preferably, described protection execution circuit includes the 8th resistance, the 9th resistance, the second controlled rectification element and optocoupler,
Described optocoupler includes light emitting diode and phototriode, and described light emitting diode is the input of described protection execution circuit,
The anode of described light emitting diode is connected with the second end of described 6th resistance, the negative electrode of described light emitting diode and described first
The anode of controlled rectification element connects, and the first end of described 8th resistance is connected with the first end of described 9th resistance, and in parallel
Between described input rectifying filter unit and described transformator processing module, second end and described second of described 8th resistance
The anode of controlled rectification element connects, and the second end of described 9th resistance is connected with the colelctor electrode of described phototriode；Described
The minus earth of the second controlled rectification element, the controlled end of described second controlled rectification element and the transmitting of described phototriode
Pole connects；The anode of described second controlled rectification element is the outfan of described protection execution circuit, and and described control unit
Power input connect.
Preferably, described protection execution circuit is connected between described power supply processing module and described power output interface,
Described protection execution circuit includes the first relay, and described first relay includes first coil, the first common port, first normally closed
Contact, the first normally opened contact, the first end of described first coil is connected with the second end of described 7th resistance, described first coil
The second end be connected with the anode of described first controlled rectification element；Described first common port is with described power supply processing module just
Pole outfan connects；Described normally-closed contact is the outfan of described protection execution circuit, and with described power output interface just
Extreme connection.
Preferably, described power supply processing module has cathode output end and cathode output end, described power output interface tool
There are positive terminal and negative pole end；Described voltage detecting circuit includes the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd electricity
Resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance, the second audion, the 4th voltage stabilizing
Pipe and the second operational amplifier, the first end of described 14th resistance and the first end of described tenth resistance, the 16th resistance
The positive terminal interconnection of first end, the cathode output end of described power supply processing module and described power output interface, the described 14th
The negative electrode of the second end of resistance and described 4th stabilivolt, the first end of the 15th resistance and described second operational amplifier anti-
Phase input interconnects, and the anode of described 4th stabilivolt and the second end of described 15th resistance are grounded respectively, described second fortune
Calculate the in-phase input end of amplifier and the first end of described 11st resistance, the cathode output end of described power supply processing module and institute
State the negative pole end interconnection of power output interface, the outfan of described second operational amplifier is through described 13rd resistance and described the
The base stage of two audions connects；The grounded emitter of described second audion, the colelctor electrode of described second audion is through described
18 resistance are connected with the second end of described 16th resistance；Second end of described tenth resistance is described voltage detecting circuit
Outfan, and be connected with the second end of described 11st resistance.
Preferably, described protection execution circuit includes the 5th stabilivolt, the 19th resistance, the second relay, controllable accurate
Source of stable pressure, described second relay includes the second coil, the second common port, the second normally-closed contact, the second normally opened contact, and described
The negative electrode of five stabilivolts is interconnected with the cathode output end of described power supply processing module and the positive terminal of described power output interface, institute
The anode stating the 5th stabilivolt is connected with the first end of described second coil through described 19th resistance, and the of described second coil
Two ends are connected with the negative electrode of described controllable accurate source of stable pressure, and the controlled end of described controllable accurate source of stable pressure is electric with described voltage detecting
The outfan on road connects, and the anode of described controllable accurate source of stable pressure is interconnected with described second common port and power output interface, institute
The cathode output end stating the second normally-closed contact with described power supply processing module is connected.
This utility model also provides a kind of charger, the electricity be connected including power supply processing module and with this power supply processing module
Source output interface, this power output interface is used for connecting rechargeable battery, and this charger also includes battery as above and is full of guarantor
Protection circuit；Described battery includes voltage detecting circuit and protection execution circuit full of protection circuit, described voltage detecting circuit
Test side is connected with described power output interface, and described voltage detecting circuit detects described charging by described power output interface
The charging voltage of battery, the outfan of described voltage detecting circuit is connected with the input of described protection execution circuit；Described guarantor
The outfan of shield execution circuit is connected with described power supply processing module；Described protection execution circuit, in described voltage detecting
Electric circuit inspection to the charging voltage of described rechargeable battery reach preset charge voltage when, control described power supply processing module to stop electricity
Source exports.
Preferably, described charger also includes indicator light circuit, for indicating described rechargeable battery and described power supply output
The connection status of interface.
Preferably, described indicator light circuit includes red led module and green indicating lamp module, described green instruction
Lamp module is connected with the outfan of described power supply processing module, in described power supply processing module incoming transport power supply time point
Bright；Described red led module is connected with described voltage detecting circuit, described for detecting in described voltage detecting circuit
Power output interface is connected with to be lighted during rechargeable battery.
This utility model passes through setting battery in charger and is full of protection circuit, and battery includes voltage full of protection circuit
Testing circuit and protection execution circuit, voltage detecting circuit is detecting rechargeable battery full of afterwards, rechargeable battery is being full of
Signal output to protecting execution circuit, control protection execution circuit to make corresponding action so that power supply processing module export to
The voltage of rechargeable battery is reduced to zero, and is always maintained at the state stopping, and that is, charger output loop and rechargeable battery are in physics
Connect off-state, until rechargeable battery removes or charger and the disconnection of alternating current power supply processing module, state just releases, this
Sample, it is to avoid rechargeable battery is in time and when charger disconnects, the safety that the long-time trickle charge of rechargeable battery may cause
Problem, improves the safety of rechargeable battery charging process, prevents rechargeable battery from overcharging simultaneously, extends the use longevity of rechargeable battery
Life.
Brief description
Fig. 1 is applied to the circuit structure block diagram in charger for this utility model battery full of protection circuit；
Fig. 2 is full of the circuit structure block diagram of protection circuit second embodiment for this utility model battery；
Fig. 3 is full of the circuit structure block diagram of protection circuit 3rd embodiment for this utility model battery；
Fig. 4 is the electrical block diagram that the battery shown in Fig. 2 is full of protection circuit second embodiment；
Fig. 5 is the electrical block diagram that the battery shown in Fig. 3 is full of protection circuit 3rd embodiment；
Fig. 6 is another electrical block diagram that the battery shown in Fig. 3 is full of protection circuit 3rd embodiment.
Drawing reference numeral explanation：
The realization of this utility model purpose, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of this utility model protection.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in this utility model embodiment
It is only used for explaining the relative position relation between each part, motion conditions etc. under a certain particular pose (as shown in drawings), such as
When really this particular pose changes, then directionality instruction also correspondingly changes therewith.
In addition, the description being related to " first ", " second " etc. in this utility model is only used for describing purpose, and it is not understood that
For indicating or implying its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can be expressed or implicitly include at least one this feature.In addition, the technical side between each embodiment
Case can be combined with each other, but must be capable of by those of ordinary skill in the art based on, when the combination of technical scheme
Will be understood that the combination of this technical scheme does not exist when appearance is conflicting or cannot realize, also do not require in this utility model
Protection domain within.
This utility model provides a kind of charger and a kind of battery being applied in this charger to be full of protection circuit.
This utility model charger with reference to shown in Fig. 1, this charger include power supply processing module 10, power output interface and
Battery is full of protection circuit 20.
Power supply processing module 10 is used for alternating current power supply being carried out exporting after direct current conversion process and transformation to power supply output
Interface.
Power output interface is used for connecting rechargeable battery, and the power supply after power supply processing module 10 is processed exports to the electricity that charges
Charge in pond.Wherein, output interface preferably to be realized using interfaces such as USB interface, SATA interface.
Battery is full of protection circuit 20 as shown in Fig. 2 Fig. 2 also show this battery is full of protection circuit 20 1 embodiment
Structure, specifically, this battery includes voltage detecting circuit 21 and protection execution circuit 22, described voltage inspection full of protection circuit 20
The test side of slowdown monitoring circuit 21 is connected with described power output interface, and described voltage detecting circuit 21 passes through described power output interface
Detect the charging voltage of described rechargeable battery, the outfan of described voltage detecting circuit 21 is defeated with described protection execution circuit 22
Enter end to connect；The outfan of described protection execution circuit 22 is connected with described power supply processing module 10；Described protection execution circuit
22, when the charging voltage for described rechargeable battery is detected in described voltage detecting circuit 21 reaches preset charge voltage, control
Make described power supply processing module 10 and stop power supply output.
When charger switches on power, and is not connected with rechargeable battery, power supply processing module 10 exports to the interface of rechargeable battery
Voltage be floating voltage.Now, because rechargeable battery does not access, charger no current exports, and power output interface no-voltage is believed
Number output, voltage detecting circuit 20 do not work.
When rechargeable battery is connected with the power output interface of charger, power supply processing module 10 starts rechargeable battery is filled
Electricity, voltage detecting circuit 21 detects current signal, when the charging voltage described rechargeable battery is detected reaches preset charged electricity
Pressure, when that is, rechargeable battery is full of, voltage detecting circuit 21 output trigger, to protecting execution circuit 22, protects execution circuit 22
Make protection act, control described power supply processing module 10 to stop power supply and export so that charger exports to the electricity of rechargeable battery
Pressure is zero, and output current is zero simultaneously, and is always maintained at this state.Now although also depositing between charger and rechargeable battery
In physical connection, but because not having electric current to flow into rechargeable battery, being equivalent to charger and disconnecting with rechargeable battery, so,
Can avoid rechargeable battery in time and when charger disconnects, the safety that the long-time trickle charge of rechargeable battery may cause
Problem, improves the safety of rechargeable battery charging process, prevents rechargeable battery from overcharging simultaneously, extends the use longevity of rechargeable battery
Life.
Above-mentioned power supply processing module 10 can be realized using following structure, and with reference to Fig. 2, power supply processing module 10 includes inputting whole
Stream filter unit 110, transformator output unit 130 and control unit 120, the input of described input rectifying filter unit 110
Connect alternating current power supply, the outfan of described input rectifying filter unit 110 is connected with the outfan of transformator output unit 130, institute
State the outfan of transformator output unit 130 and the signal receiving end interconnection of power output interface and described control unit 120, institute
The control end stating control unit 120 is connected with the controlled end of described transformator output unit 130.
Described input rectifying filter unit 110 is used for exporting to transformator output alternating current power supply after over commutation, filtering
Unit 130, power supply is carried out, after transformation process, exporting to power output interface by transformator output unit 130, is that rechargeable battery supplies
Electricity；After described control unit 120 receives the voltage signal of power output interface, transformator output unit 130 is controlled to make phase
The adjustment answered, exports suitable voltage and electric current to rechargeable battery, rechargeable battery is charged.
Preferably, described input rectifying filter unit 110 includes Surge Protector, rectifier bridge and filter capacitor, described wave
When surge protector is used for preventing thunderbolt or abnormity of power supply, the infringement to charger；Described rectifier bridge is used for changing alternating current power supply
Export after becoming DC source to transformator output unit 130, described filter capacitor is used for filtering the alternating component in DC source.
Preferably, transformator output mould includes transformator Tr and inspection leakage resistance RS1, and transformator Tr is used for carrying out alternating current
There is provided energy for rechargeable battery after process, also provide running voltage for each circuit module of charger simultaneously, inspection leakage resistance RS1 is used for
The charging current of rechargeable battery is sampled, and sampled signal is exported to voltage detecting circuit 22 and voltage feedback circuit
121.
Preferably, described control unit 120 includes main control chip IC1 and voltage feedback circuit 121, voltage feedback circuit
121 voltage signals exporting the transformator detecting output unit 130, feed back to the feedback end of main control chip IC1, master control core
Piece IC1 passes through the pwm signal of control end output control transformator output unit 130, thus adjusting transformator output unit 130
Electric current and the output of voltage.
Based on above-described embodiment, charger still further comprises indicator light circuit, for indicating described rechargeable battery and institute
State the connection status of power output interface.
Described indicator light circuit includes red led module LED2 and green indicating lamp module LED1, described green instruction
Lamp module LED1 is connected with the outfan of described power supply processing module 10, in described power supply processing module incoming transport power supply
When light；Described red led module LED2 is connected with described voltage detecting circuit 21, in described voltage detecting circuit
21 detect described power output interface is connected with and lights during rechargeable battery.
With reference to Fig. 4, the first embodiment of this utility model voltage detecting circuit 21, in this embodiment, voltage detecting are proposed
Circuit 21 includes the first audion Q1, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance
R5, the 6th resistance R6, the 7th resistance R7, the first electric capacity C1, the first stabilivolt D1, the second stabilivolt D2, the 3rd stabilivolt D3,
One controlled rectification element T1 and the first operational amplifier U1, the first end of described first resistor R1 and described power supply processing module
Positive terminal VOUT+ interconnection, the second end of described first resistor R1 and the institute of 10 cathode output end and described power output interface
The in-phase input end stating the negative electrode, the first end of the 7th resistance R7 and described first operational amplifier U1 of the 3rd stabilivolt D3 is mutual
Even, the anode of described 3rd stabilivolt D3 and second end of described 7th resistance R7 are grounded respectively；Described first operational amplifier
The in-phase input end of U1 is also grounded through described 3rd resistor R3；The inverting input of described first operational amplifier U1 and described electricity
The negative pole end VOUT- interconnection of the cathode output end of source processing module 10 and described power output interface, described first operation amplifier
The outfan of device U1 is connected with the anode of described first stabilivolt D1 through described second resistance R2 successively, described first stabilivolt D1
Negative electrode be connected with the base stage of described first audion Q1；The emitter stage of described first audion Q1 and described first resistor R1
First end connects, the colelctor electrode of described first audion Q1 and the first end of described 4th resistance R4, described 6th resistance R6
First end interconnects；Second end of described 4th resistance R4 is connected with the negative electrode of described second stabilivolt D2, described second stabilivolt
The anode of D2 is through described first electric capacity C1 ground connection；The input through described protection execution circuit 22 for second end of described 6th resistance R6
End is connected with the anode of described first controlled rectification element T1, the minus earth of described first controlled rectification element T1, and described the
The controlled end of one controlled rectification element T1 is connected with the first end of described 5th resistance R5, second end of described 5th resistance R5 with
The common port of described second stabilivolt D2 and described first electric capacity C1 connects.
In the present embodiment, above-mentioned first audion Q1 preferably employs PNP type triode, for voltage detecting circuit 10 with fill
Connection between electrical equipment major loop and disconnection；In other embodiments, also can be implemented using other switch elements.
Second stabilivolt D2 is used for turning on when the voltage of rechargeable battery is close to preset charge voltage, thus Time delay is first
Part action.Above-mentioned 4th resistance R4 and the first electric capacity C1 is delay cell, due to the time delay of the 4th resistance R4 and the first electric capacity C1
Effect, when battery is close to preset charge voltage, voltage feedback circuit 121 will be defeated for the charging voltage signal receiving rechargeable battery
Go out to main control chip IC1, to be controlled the pwm signal of transformator output unit by main control chip IC1, and then regulation power supply output electricity
The size of stream is so that power supply processing module 10 carries out low current charge for a period of time to rechargeable battery, until it reaches delay time.
Above-mentioned first controlled rectification element T1 preferably employs one-way SCR, and the first controlled rectification element T1 is used for coordinating electricity
Pressure testing circuit 21 is detecting the charge condition of rechargeable battery, and the signal transmission that rechargeable battery is full of is to protecting execution circuit
22.
Wherein, 3rd resistor R3 is the reference voltage of the in-phase input end of the first operational amplifier U1, and this reference voltage is big
In zero, generally 0.2V or be slightly larger than 0.2V, this reference voltage is used for being compared with the voltage of inspection leakage resistance RS1, so that
The outfan of the first operational amplifier U1 exports corresponding voltage signal, thus controlling the break-make of the first audion Q1 to realize electricity
Connection between pressure testing circuit 10 and charger major loop and disconnection.
When charger incoming transport power supply, on inspection leakage resistance, no current flows through, then the first operational amplifier U1's is reverse
It is zero that input inputs, simultaneously the in-phase input end input reference voltage signal of the first operational amplifier U1, now, reversely inputs
The voltage at end is less than the reference voltage of in-phase input end, and the first operational amplifier U1 exports high level signal, and successively through second
Resistance R2, the first stabilivolt D1 export to the first audion Q1 so that the first audion Q1 ends.
When rechargeable battery is connected charging by power output interface with charger, electric current flows through inspection leakage resistance RS1, and shape
Become voltage signal to input to the reverse input end of the first operational amplifier U1, and be more than the benchmark electricity of in-phase input end in this voltage
During pressure, the first operational amplifier U1 output low level signal, and export to first through second resistance R2, the first stabilivolt D1 successively
Audion Q1, controls the first audion Q1 conducting, after the first audion Q1 conducting, by the cathode output end of power supply processing module 10
The voltage signal of output exports to the negative electrode of the second stabilivolt D2, and the breakdown reverse voltage of this second stabilivolt D2 is to inductive charging electricity
The rated voltage setting in pond, when the cathode voltage of the second stabilivolt D2 is increased to its breakdown reverse voltage, the second stabilivolt D2
Due to reverse breakdown conducting；Now, the control source through the first audion Q1 output is to the first electric capacity C1, and to the first electric capacity C1
It is charged, when charging voltage reaches the threshold voltage of the first controlled rectification element T1, the first controlled rectification element T1 triggering
And in the conduction state, after conducting, output trigger extremely protects execution circuit 22, so that protection execution circuit 22 executes protection
Action.
Based on the first embodiment of above-mentioned voltage detecting circuit 21, in the first embodiment of protection execution circuit 22, should
Protection execution circuit 22 may connect between described input rectifying filter unit 110 and transformator output unit 130, and with described
Control unit 120 connects.
Preferably, this protection execution circuit 22 include the 8th resistance R8, the 9th resistance R9, the second controlled rectification element T2 and
Optocoupler OPT, described optocoupler OPT includes light emitting diode and phototriode, and described light emitting diode is that described protection executes electricity
The input on road 22, the anode of described light emitting diode is connected with second end of described 6th resistance R6, described light emitting diode
Negative electrode be connected with the anode of described first controlled rectification element T1, the first end of described 8th resistance R8 and described 9th resistance
The first end of R9 connects, and is parallel between described input rectifying filter unit 110 and described transformator output unit 130, institute
The second end stating the 8th resistance R8 is connected with the anode of described second controlled rectification element T2, second end of described 9th resistance R9
It is connected with the colelctor electrode of described phototriode；The minus earth of described second controlled rectification element T2, described second is controlled whole
The controlled end of fluid element T2 is connected with the emitter stage of described phototriode；The anode of described second controlled rectification element T2 is institute
State the outfan of protection execution circuit 22, and be connected with the power input of described control unit 120.
Optocoupler OPT is used for when receiving the Continuity signal of the first controlled member T1, and optocoupler OPT interior light emitting diodes are sent out
Light, the internal phototriode conducting of triggering optocoupler OPT, triggers the after making the controlled end of the second controlled member T2 have electric current to flow through
Two controlled member T2 conductings, in the present embodiment, the second controlled rectification element T2 preferably employs one-way SCR.
The second controlled rectification element T2 is used for, after its conducting, its anode voltage be will be maintained at 0.7V, thus will be with
The main control chip IC1 supply pin being connected voltage clamp in 0.7V, due to the initial operating voltage of main control chip IC1
(opening the voltage that shakes) needs could work more than 8V, and after the voltage of main control chip IC1 supply pin is clamped, main control chip IC1 stops
Work, realize charger to export to the voltage of power output interface is zero so that charger is disconnected with rechargeable battery.
In conjunction with Fig. 1, Fig. 2 and Fig. 4, the concrete electricity to voltage detecting circuit 21 and the first embodiment of protection execution circuit 22
Road principle is described in detail：
When charger switches on power, and is not connected with rechargeable battery, the voltage that charger exports the interface to rechargeable battery is
Floating voltage.Now, because rechargeable battery does not access, charger no current exports, the first input end of voltage detecting circuit 21
Voltage signal is zero, and the current potential of the inverting input of the first operational amplifier U1 is less than normal phase input end, and now, the first computing is put
The outfan output high potential of big device U1, this high potential is added to the first audion through the 4th resistance R4 and described first stabilivolt D1
The base stage of Q1, makes the first audion Q1 cut-off, and voltage detecting circuit 21 does not work.Now, green LED indicator lamp module LED1 point
Bright.
When rechargeable battery accesses charger outfan, start to charge up, output loop has electric current to flow through, on inspection leakage resistance RS1
There is voltage, now, the voltage on inspection leakage resistance RS1 is more than the voltage in 3rd resistor R3, and that is, the first operational amplifier U1's is anti-
It is more than the current potential of normal phase input end to the current potential of outfan, now, the outfan output low level of the first operational amplifier U1, make
Obtaining the first audion Q1 emitter voltage is higher than base voltage, the first audion Q1 conducting, and afterwards, the first audion Q1 maintains and leads
Logical state, voltage detecting circuit 21 is started working.Now, red led module LED2 is lighted.
When the rechargeable battery of power shortage just accesses charger, the output voltage of power output interface is relatively low, steady less than second
The voltage stabilizing value of pressure pipe D2, the second stabilivolt D2 is in cut-off state, and the first electric capacity C1 does not have electric current to flow through, the first electric capacity C1 voltage
It is zero, the first controlled rectification element T1 cut-off.Now, the working condition of charger is identical with universal charger, rechargeable battery electricity
Pressure gradually rises.
When rechargeable battery close to full of when, the second stabilivolt D2 conducting, the first electric capacity C1 has electric current to flow into start to charge up, the
One electric capacity C1 voltage gradually rises.
When the first electric capacity C1 voltage increases above the triggering threshold voltage of the first controlled rectification element T1, first is controlled
Rectifier cell T1 turns on, and the primary side of optocoupler OPT obtains electric, and interior light emitting diodes light, and lead to the inside photosensitive three of optocoupler OPT
Pole pipe turns on, and now, the second controlled rectification element T2 controlled end has electric current to flow into, thus the second controlled rectification element T2 conducting.
After second controlled rectification element T2 conducting, its anode voltage will be maintained at 0.7V, and is always maintained at this shape
State, now the supply pin voltage of main control chip IC1 be clamped at 0.7V, less than its running voltage, therefore main control chip IC1
Quit work, and keep this state.After main control chip IC1 quits work, after main control chip IC1 quits work, charger is defeated
Going out to the voltage of power output interface is zero, and now charging indicator light extinguishes, and representing charges terminates, and output current is simultaneously
Zero, and it is always maintained at this state.Now although also there is physical connection between charger and rechargeable battery, but because do not have
Electric current flow into rechargeable battery, be equivalent to charger and disconnect with rechargeable battery, in this manner it is possible to avoid rechargeable battery not and
When with charger disconnect when, the safety problem that the long-time trickle charge of rechargeable battery may cause, improve rechargeable battery fill
The safety of electric process, prevents rechargeable battery from overcharging simultaneously, extends the service life of rechargeable battery.
Based on the first embodiment of above-mentioned voltage detecting circuit 21, in the second embodiment of protection execution circuit 22, should
Protection execution circuit 22 is connected between power supply processing module 10 and the power output interface that is connected with this power supply processing module 10.
Preferably, with reference to Fig. 1, Fig. 3 and Fig. 5, above-mentioned protection execution circuit 22 includes the first relay K1, and described first continues
Electrical equipment K1 includes first coil, the first common port, the first normally-closed contact, the first normally opened contact, the first end of described first coil
It is connected with second end of described 6th resistance R6, the sun of the second end of described first coil and described first controlled rectification element T1
Pole connects；Described first common port is connected with the cathode output end of described power supply processing module 10；Described first normally-closed contact is
The outfan of described protection execution circuit 22, and be connected with the positive terminal VOUT+ of described power output interface.
In this embodiment, after voltage detecting circuit 21 reaches preset value in charging voltage rechargeable battery is detected,
Output trigger, to the controlled end of the first controlled rectification element T1, triggers the first controlled rectification element T1 conducting, first is controlled
After rectifier cell T1 conducting, the first coil of the first relay K1 being attached thereto is obtained electric, the first common port is normally closed with first
Contact adhesive, the first common port is connected with the first normally opened contact, and then realizes charger and disconnect with rechargeable battery, and keeps
This state, just can restPose after light source of charger cut-out.Now, the red led module of LED light
LED2 light redirect for green indicating lamp module LED1 light, so, charger to rechargeable battery fully charged after, even if forgetting
Pull out plug, charger is ined succession rechargeable battery for a long time, any dangerous or infringement also will not occur, it is to avoid rechargeable battery in time with
When charger disconnects, the safety problem that the long-time trickle charge of rechargeable battery may cause, improves rechargeable battery and charged
The safety of journey, prevents rechargeable battery from overcharging simultaneously, extends the service life of rechargeable battery.
With reference to Fig. 1, Fig. 3 and Fig. 6, the second embodiment of this utility model voltage detecting circuit 21 is proposed, in this embodiment,
Voltage detecting circuit 21 include the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12, the 13rd resistance R13, the tenth
Four resistance R14, the 15th resistance R15, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, the second audion
Q2, the 4th stabilivolt D4 and the second operational amplifier U2, the first end of described 14th resistance R14 and described tenth resistance R10
First end, the first end of the 16th resistance R16, the cathode output end of described power supply processing module 10 and described power supply output connect
Mouthful positive terminal VOUT+ interconnection, second end of described 14th resistance R14 and the negative electrode of described 4th stabilivolt D4, the 15th
The inverting input interconnection of the first end of resistance R15 and described second operational amplifier U2, the anode of described 4th stabilivolt D4
It is grounded respectively with second end of described 15th resistance R15, the in-phase input end of described second operational amplifier U2 and described the
The negative pole end of the first end, the cathode output end of described power supply processing module 10 and described power output interface of 11 resistance R11
VOUT- interconnects, and the outfan of described second operational amplifier U2 is through described 13rd resistance R13 and described second audion Q2's
Base stage connects；The grounded emitter of described second audion Q2, the colelctor electrode of described second audion Q2 is through the described 18th electricity
Resistance R18 is connected with second end of described 16th resistance R16；Second end of described tenth resistance R10 is described voltage detecting electricity
The outfan on road 21, and be connected with second end of described 11st resistance R11.
In the present embodiment, the second audion Q2 is in parallel with the 17th resistance R17 after connecting with the 18th resistance R18, and is subject to
The control of the second operational amplifier U2 is being turned on, so that the output voltage of charger is increased to charger and exporting and connect to battery
During the floating voltage of mouth, control controllable accurate source of stable pressure TL conducting.11st resistance R11 and the tenth resistance R10 pass through to connect point
Press and to detect the charging voltage of rechargeable battery.
Based on the second embodiment of voltage detecting circuit 21, above-mentioned protection execution circuit 22 include the 5th stabilivolt D5,
19 resistance R19, the second relay K2, controllable accurate source of stable pressure TL, described second relay includes the second coil, second public
End, the second normally-closed contact, the second normally opened contact, the negative electrode of described 5th stabilivolt D5 and the positive pole of described power supply processing module 10
Outfan, the positive terminal VOUT+ interconnection of described power output interface, the anode of described 5th stabilivolt D5 is through the described 19th electricity
Resistance R19 is connected with the first end of described second coil, and the second end of second coil of described second relay K2 is controlled with described
Negative electrode connection, the controlled end of described controllable accurate source of stable pressure TL and the output of described voltage detecting circuit 21 of precision voltage regulator TL
End connection, second common port of the anode of described controllable accurate source of stable pressure TL and described second relay K2 and power output interface
Interconnection, second normally-closed contact of described second relay K2 is connected with the cathode output end of described power supply processing module 10.
In this embodiment, controllable accurate source of stable pressure TL is used for the electricity in the 11st resistance R11 and the tenth resistance R10 common port
Pressure reaches the conducting preset value of controllable accurate source of stable pressure TL controlled end, and triggering and conducting is so that the second relay K2 of being attached thereto
The energized action of the second coil.
Second relay K2 be used for the second coil obtain electric after, the second common port and the second normally-closed contact disconnect, the second public affairs
Hold with normally opened contact adhesive so that it is zero that charger exports to the voltage of rechargeable battery altogether, thus realizing charger and the electricity that charges
Pond disconnects.
Second embodiment in conjunction with voltage detecting circuit 21 and accordingly protection execution circuit 22, in this embodiment,
When charger switches on power, and is not connected with rechargeable battery, charger no current exports, the anti-phase input of the second operational amplifier U2
The current potential at end is less than normal phase input end, now, the outfan output electronegative potential of operational amplifier U2, this electronegative potential is to the two or three pole
The base stage of pipe Q2, makes the second audion Q2 cut-off, and controllable accurate source of stable pressure TL is not turned on, the second relay K2 line bag no current,
Second relay K2 is failure to actuate, and keeps normally off.Now, the lighting of green indicating lamp module LED1.
When rechargeable battery is connected charging by power output interface with charger, the voltage of power output interface reduces,
Turn on preset value when the voltage of the tenth electricity group R10 and the 11st resistance R11 common port is less than controllable accurate source of stable pressure TL controlled end,
Controllable accurate source of stable pressure TL still in cut-off state, the second relay K2 no current, be failure to actuate；Now, the second operational amplifier
The outfan output high potential of U2, this high potential, to the base stage of the second audion Q2, makes the second audion Q2 conducting so that exporting
Voltage raises, slightly above floating voltage, and now, red led module LED2 is lighted.
When the charging voltage of rechargeable battery reaches preset charge voltage, the 11st resistance R11 is public with the tenth resistance R10
The voltage at end reaches the conducting preset value of controllable accurate source of stable pressure TL controlled end, after controllable accurate source of stable pressure TL conducting so that with
Second relay K2 the second coil being connected obtain electric, the second common port and the second normally-closed contact disconnect, the second common port with normal
Open contact adhesive, now, charger is connected disconnection with battery, so that it is zero that charger exports to the voltage of battery interface.
Now, red led module LED2 is extinguished, so, can avoid rechargeable battery in time with when charger disconnects, charging
The safety problem that the long-time trickle charge of battery may cause, improves the safety of rechargeable battery charging process, prevents from filling simultaneously
Electric over-charging of battery, extends the service life of rechargeable battery.
It is understood that being full of protection circuit due to employing above-mentioned battery in this utility model charger, therefore,
The embodiment of this charger includes whole technical schemes that above-mentioned battery is full of protection circuit whole embodiments, and the skill being reached
Art effect is also identical, will not be described here.
These are only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
The equivalent structure made using this utility model description and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in
Other related technical fields, are all included in the same manner in scope of patent protection of the present utility model.
Claims (10)
1. a kind of battery is full of protection circuit, in charger, described charger have power supply processing module and with this power supply
The power output interface that processing module connects, this power output interface is used for connecting rechargeable battery it is characterised in that described battery
Include voltage detecting circuit and protection execution circuit, the test side of described voltage detecting circuit and described power supply full of protection circuit
Output interface connects, and described voltage detecting circuit detects the charging voltage of described rechargeable battery by described power output interface,
The outfan of described voltage detecting circuit is connected with the input of described protection execution circuit；The output of described protection execution circuit
End is connected with described power supply processing module；Described protection execution circuit, for filling described in detecting in described voltage detecting circuit
When the charging voltage of battery reaches preset charge voltage, described power supply processing module is controlled to stop power supply output.
2. battery as claimed in claim 1 be full of protection circuit it is characterised in that described power supply processing module to have positive pole defeated
Go out end and cathode output end, described power output interface has positive terminal and negative pole end；Described voltage detecting circuit includes first
Audion, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the first electricity
Appearance, the first stabilivolt, the second stabilivolt, the 3rd stabilivolt, the first controlled rectification element and the first operational amplifier, described first
The first end of resistance is interconnected with the cathode output end of described power supply processing module and the positive terminal of described power output interface, described
The negative electrode of the second end of first resistor and described 3rd stabilivolt, the first end of the 7th resistance and described first operational amplifier
In-phase input end interconnects, and the anode of described 3rd stabilivolt and the second end of described 7th resistance are grounded respectively；Described first fortune
The in-phase input end calculating amplifier is also grounded through described 3rd resistor；The inverting input of described first operational amplifier with described
The cathode output end of power supply processing module and described power output interface negative pole end interconnection, described first operational amplifier defeated
Go out end to be connected with the anode of described first stabilivolt through described second resistance successively, the negative electrode of described first stabilivolt and described the
The base stage of one audion connects；The emitter stage of described first audion is connected with the first end of described first resistor, and described first
The colelctor electrode of audion is interconnected with the first end of described 4th resistance, the first end of described 6th resistance；Described 4th resistance
Second end is connected with the negative electrode of described second stabilivolt, and the anode of described second stabilivolt is through described first capacity earth；Described
The input through described protection execution circuit for second end of the 6th resistance is connected with the anode of described first controlled rectification element, institute
State the minus earth of the first controlled rectification element, the controlled end of described first controlled rectification element and the first of described 5th resistance
End connects, and the second end of described 5th resistance is connected with the common port of described second stabilivolt and described first electric capacity.
3. battery as claimed in claim 2 be full of protection circuit it is characterised in that described power supply processing module include inputting whole
Stream filter unit, transformator output unit and control unit, the input termination alternating current power supply of described input rectifying filter unit, institute
The outfan stating input rectifying filter unit is connected with the outfan of transformator output unit, described transformator output unit defeated
Go out signal receiving end interconnection, the control end of described control unit and the described change at end and power output interface and described control unit
The controlled end of depressor output unit connects, and it is defeated with transformator that described protection execution circuit is connected to described input rectifying filter unit
Go out between unit, and be connected with described control unit.
4. battery as claimed in claim 3 is full of protection circuit it is characterised in that described protection execution circuit includes the 8th electricity
Resistance, the 9th resistance, the second controlled rectification element and optocoupler, described optocoupler includes light emitting diode and phototriode, described
Optical diode is the input of described protection execution circuit, the second end of the anode of described light emitting diode and described 6th resistance
Connect, the negative electrode of described light emitting diode is connected with the anode of described first controlled rectification element, the first of described 8th resistance
End is connected with the first end of described 9th resistance, and is parallel to described input rectifying filter unit and described transformator processing module
Between, the second end of described 8th resistance is connected with the anode of described second controlled rectification element, and the second of described 9th resistance
End is connected with the colelctor electrode of described phototriode；The minus earth of described second controlled rectification element, described second is controlled whole
The controlled end of fluid element is connected with the emitter stage of described phototriode；The anode of described second controlled rectification element is described guarantor
The outfan of shield execution circuit, and be connected with the power input of described control unit.
5. battery as claimed in claim 2 be full of protection circuit it is characterised in that described protection execution circuit be connected to described
Between power supply processing module and described power output interface, described protection execution circuit includes the first relay, and described first continues
Electrical equipment includes first coil, the first common port, the first normally-closed contact, the first normally opened contact, the first end of described first coil with
Second end of described 7th resistance connects, and the second end of described first coil is connected with the anode of described first controlled rectification element
Connect；Described first common port is connected with the cathode output end of described power supply processing module；Described first normally-closed contact is described guarantor
The outfan of shield execution circuit, and be connected with the positive terminal of described power output interface.
6. battery as claimed in claim 1 be full of protection circuit it is characterised in that described power supply processing module to have positive pole defeated
Go out end and cathode output end, described power output interface has positive terminal and negative pole end；Described voltage detecting circuit includes the tenth
Resistance, the 11st resistance, the 12nd resistance, the 13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th
Resistance, the 18th resistance, the second audion, the 4th stabilivolt and the second operational amplifier, the first end of described 14th resistance
With the first end of described tenth resistance, the first end of the 16th resistance, the cathode output end of described power supply processing module and described
The positive terminal interconnection of power output interface, the second end of described 14th resistance and the negative electrode of described 4th stabilivolt, the 15th
The inverting input interconnection of the first end of resistance and described second operational amplifier, the anode of described 4th stabilivolt and described the
Second end of 15 resistance is grounded respectively, the in-phase input end of described second operational amplifier and the first of described 11st resistance
The negative pole end interconnection of end, the cathode output end of described power supply processing module and described power output interface, described second computing is put
The outfan of big device is connected with the base stage of described second audion through described 13rd resistance；The emitter stage of described second audion
Ground connection, the colelctor electrode of described second audion is connected with the second end of described 16th resistance through described 18th resistance；Described
Second end of the tenth resistance is the outfan of described voltage detecting circuit, and is connected with the second end of described 11st resistance.
7. battery as claimed in claim 6 be full of protection circuit it is characterised in that described protection execution circuit to include the 5th steady
Pressure pipe, the 19th resistance, the second relay, controllable accurate source of stable pressure, described second relay includes the second coil, second public
End, the second normally-closed contact, the second normally opened contact, the negative electrode of described 5th stabilivolt is exported with the positive pole of described power supply processing module
The positive terminal interconnection of end and described power output interface, the anode of described 5th stabilivolt is through described 19th resistance and described the
The first end of two coil connects, and the second end of described second coil is connected with the negative electrode of described controllable accurate source of stable pressure, described can
Control precision voltage regulator controlled end be connected with the outfan of described voltage detecting circuit, the anode of described controllable accurate source of stable pressure and
Described second common port and power output interface interconnection, described second normally-closed contact is exported with the negative pole of described power supply processing module
End connects.
8. a kind of charger, the power output interface be connected including power supply processing module and with this power supply processing module, this power supply
Output interface is used for connecting rechargeable battery it is characterised in that this charger is also included as described in claim 1 to 7 any one
Battery be full of protection circuit；Described battery includes voltage detecting circuit and protection execution circuit, described electricity full of protection circuit
The test side of pressure testing circuit is connected with described power output interface, and described voltage detecting circuit passes through described power output interface
Detect the charging voltage of described rechargeable battery, the outfan of described voltage detecting circuit and the described input protecting execution circuit
Connect；The outfan of described protection execution circuit is connected with described power supply processing module；Described protection execution circuit, for
When described voltage detecting circuit detects the charging voltage of described rechargeable battery and reaches preset charge voltage, control at described power supply
Reason module stops power supply output.
9. charger as claimed in claim 8 is it is characterised in that described charger also includes indicator light circuit, for indicating
Described rechargeable battery and the connection status of described power output interface.
10. charger as claimed in claim 9 it is characterised in that described indicator light circuit include red led module and
Green indicating lamp module, described green indicating lamp module is connected with the outfan of described power supply processing module, in described electricity
Light during the processing module incoming transport power supply of source；Described red led module is connected with described voltage detecting circuit, for
Described voltage detecting circuit detects described power output interface and is connected with to be lighted during rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620532013.8U CN205960679U (en) | 2016-06-01 | 2016-06-01 | Battery is full of protection circuit and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620532013.8U CN205960679U (en) | 2016-06-01 | 2016-06-01 | Battery is full of protection circuit and charger |
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| Publication Number | Publication Date |
|---|---|
| CN205960679U true CN205960679U (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620532013.8U Expired - Fee Related CN205960679U (en) | 2016-06-01 | 2016-06-01 | Battery is full of protection circuit and charger |
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| Country | Link |
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| CN (1) | CN205960679U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046315A (en) * | 2017-05-10 | 2017-08-15 | 深圳珈伟光伏照明股份有限公司 | A kind of constant-current charging of battery manages circuit |
| CN110771001A (en) * | 2018-11-22 | 2020-02-07 | 深圳市大疆创新科技有限公司 | Charger and charging control circuit |
| CN115940362A (en) * | 2023-02-08 | 2023-04-07 | 深圳市科宇电源科技有限公司 | Adaptive power supply circuit and adaptive adjusting method |
-
2016
- 2016-06-01 CN CN201620532013.8U patent/CN205960679U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046315A (en) * | 2017-05-10 | 2017-08-15 | 深圳珈伟光伏照明股份有限公司 | A kind of constant-current charging of battery manages circuit |
| CN107046315B (en) * | 2017-05-10 | 2023-05-05 | 珈伟新能源股份有限公司 | Battery constant current charging management circuit |
| CN110771001A (en) * | 2018-11-22 | 2020-02-07 | 深圳市大疆创新科技有限公司 | Charger and charging control circuit |
| CN115940362A (en) * | 2023-02-08 | 2023-04-07 | 深圳市科宇电源科技有限公司 | Adaptive power supply circuit and adaptive adjusting method |
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