CN107124022A - Charging protection circuit for storage battery - Google Patents
Charging protection circuit for storage battery Download PDFInfo
- Publication number
- CN107124022A CN107124022A CN201710447701.3A CN201710447701A CN107124022A CN 107124022 A CN107124022 A CN 107124022A CN 201710447701 A CN201710447701 A CN 201710447701A CN 107124022 A CN107124022 A CN 107124022A
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- CN
- China
- Prior art keywords
- charging
- circuit
- resistance
- input
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of charging protection circuit for storage battery, for battery charging, including a charging circuit, governor circuit and connect the charging circuit and the governor circuit respectively hold line control circuit；The charging circuit is provided with first input end, the second input, the first output end and the second output end；The first input end connects a charging voltage Vin, second input connects the negative pole of the battery, and first output end connects system load, and line control circuit is held described in the second output end connection；It is described to hold the positive pole that line control circuit connects the battery.Above-mentioned charging protection circuit for storage battery; circuit structure design is simple; it is feature-rich; it is integrated with battery charge current limliting, battery under-voltage protection, voltage and recovers a variety of functions such as self-starting charging; realize a variety of protections to battery; prevent battery voltage in charging process is counter from filling, it is ensured that the service life and security of battery.
Description
Technical field
The present invention relates to accumulator cell charging and discharging technical field, more particularly to a kind of charging protection circuit for storage battery.
Background technology
Nowadays electronic product has become people's life and work as essential instrument, but with electronic product increasingly
Intellectuality, loss of the electronic product to electricity is also more and more faster.Therefore, must not while people frequently use electronic product
It is not charged repeatedly within one day.
Most of charge-discharge protection circuit of battery is integrated on charger in the prior art, and in some applications
Occasion is directly unsuitable, inconvenient using charger, and such as installing space is limited, cost is restricted or it is public suitable to consider
When power supply etc..At this moment new solution is required to complete the function
The content of the invention
Based on this, the present invention provides a kind of charging protection circuit for storage battery, integrated multi-protective function, circuit structure design
Simply, cost can be substantially reduced.
In order to realize the purpose of the present invention, the present invention is adopted the following technical scheme that：
A kind of charging protection circuit for storage battery, for battery charging, including a charging circuit, governor circuit and connects respectively
Connect the charging circuit and the governor circuit holds line control circuit；The charging circuit is provided with first input end, second defeated
Enter end, the first output end and the second output end；The first input end connects a charging voltage Vin, the second input connection
The negative pole of the battery, first output end connects system load, and the second output end connection is described to perform control electricity
Road；It is described to hold the positive pole that line control circuit connects the battery.
Above-mentioned charging protection circuit for storage battery, circuit structure design is simple, feature-rich, is integrated with battery charge limit
Stream, battery under-voltage protection, voltage recover a variety of functions such as self-starting charging, realize a variety of protections to battery, prevent battery
Voltage is counter in charging process fills, it is ensured that the service life and security of battery.
In one of the embodiments, the charging circuit include some diode D1, electric capacity C1, C2, resistance R1, R2,
R2, transistor Q1, metal-oxide-semiconductor Q2 and a Schottky diode D2；The charging circuit also have an earth terminal, the electric capacity C1,
C2 is connected between first output end and the earth terminal.
In one of the embodiments, the quantity of the diode D1 is two；Anode after diode D1 described in two is in parallel
One end connects the first input end, and one end of negative electrode connects first output end after parallel connection.
In one of the embodiments, the drain electrode of the metal-oxide-semiconductor Q2 connects second input, and the connection of its grid is described
Resistance R1, its source electrode connects earth terminal after connecting the resistance R3.
In one of the embodiments, the governor circuit is provided with the first power input, the second telephone input and the
Three power inputs, first power input, the second source input and the 3rd power input are all connected with
The system load, is powered by the system load.
In one of the embodiments, the governor circuit includes resistance R4, R5, R6, R7, R8, R9, controllable accurate voltage stabilizing
Source U1 and transistor Q3, Q4, wherein the two ends of the resistance R5 be connected with electric capacity a C3, the electric capacity C3 and the resistance R4,
R5, R6 constitute division module.
In one of the embodiments, first power input connects one end of the resistance R4, and resistance R4's is another
It is grounded after the connection resistance R5 of one end；The two ends of the resistance R6 are connected to the two ends of the resistance R5.
In one of the embodiments, one end of the resistance R7, the resistance are told in the second source input connection
The R7 other end is connected to the negative electrode of the controllable accurate source of stable pressure U1, the plus earth of the controllable accurate source of stable pressure U1, institute
The reference pole for stating controllable accurate source of stable pressure U1 is connected to one end of the resistance R5.
In one of the embodiments, the 3rd power input connects one end of the resistance R8, the resistance R8
The other end connect the colelctor electrode of the transistor Q3, the base stage of the transistor Q3 is connected to be connected after a voltage-regulator diode ZD1
In the negative electrode of the controllable accurate source of stable pressure U1, the grounded emitter of the transistor Q3.
In one of the embodiments, the colelctor electrode of the transistor Q3 is also connected with the negative electrode of a voltage-regulator diode ZD2, institute
The anode for stating voltage-regulator diode ZD2 connects the base stage of the transistor Q4, and the colelctor electrode connection of the transistor Q4 is described to be performed
Control circuit, the grounded emitter of the transistor Q4.
Brief description of the drawings
Fig. 1 is the circuit module figure of the charging protection circuit for storage battery of a better embodiment of the invention；
Fig. 2 is circuit theory diagrams of the charging protection circuit for storage battery in relay attracting state described in Fig. 1；
Accompanying drawing marks explanation：
10- charging circuits, 20- governor circuits, the power inputs of 21- first, 22- second source inputs, the electricity of 23- the 3rd
Source input, 24- division modules, 30- holds line control circuit.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Fig. 1 and Fig. 2 is referred to, is the charging protection circuit for storage battery of a better embodiment of the invention, for battery
Charging, including a charging circuit 10, governor circuit 20 and the execution control electricity for connecting charging circuit 10 and governor circuit 20 respectively
Road 30.
Charging circuit 10 include some diode D1, electric capacity C1, C2, resistance R1, R2, R3, transistor Q1, metal-oxide-semiconductor Q2 and
Schottky diode D2.Charging circuit 10 is provided with first input end, the second input, the first output end and the second output end.Fill
The first input end connection charging voltage V of circuit 10in, the negative pole of the second input connection battery, the connection of the first output end
System load (+12Vin), line control circuit 30 is held in the connection of the second output end.In order to ensure that circuit stability reliably works, charging
Circuit 10 also has an earth terminal, and electric capacity C1, C2 are connected between the first output end and earth terminal.
Specifically, in the present embodiment, diode D1 quantity is two.One end of anode connects after two diode D1 are in parallel
The first input end of charging circuit 10 is connect, one end of negative electrode connects the first output end of charging circuit 10 after parallel connection.Normal upper electricity
Afterwards, charging voltage VinGive diode D1 forward voltages so that diode D1 is turned on, and power input is provided for subsequent conditioning circuit.Two
Pole pipe D1 can prevent charging voltage Vin reversal connections, damage battery, can also prevent charging voltage VinSpecified fill is not up to upon actuation
During electricity value, battery tension is counter to be filled into charge power supply.Second input of metal-oxide-semiconductor Q2 drain electrode connection charging circuit 10, metal-oxide-semiconductor
Earth terminal is connected after Q2 grid connection resistance R1, metal-oxide-semiconductor Q2 source electrode connection resistance R3.
Resistance R1 one end connects the first output end of charging circuit 10, its other end connection metal-oxide-semiconductor Q2 grid；Resistance
R2 is in parallel with resistance R1, i.e. one end of resistance R2 connects the first output end of charging circuit 10, its other end connection metal-oxide-semiconductor Q2's
Grid.Resistance R2 one end is also connected with the second output end of charging circuit 10.Transistor Q1 base stage connection metal-oxide-semiconductor Q2 source
Pole, transistor Q1 colelctor electrode is connected to one end that resistance R1 is connected with metal-oxide-semiconductor Q2 grid, and transistor Q1 emitter stage connects
Connect earth terminal.Schottky diode D2 anode connection metal-oxide-semiconductor Q2 source electrode, Schottky diode D2 minus earth plays limit
Stream is acted on.
Charging voltage Vin is normally upper electric, on the one hand gives system load normal power supply (+12Vin), on the other hand with reference to master control
Circuit 20 is charged with holding line control circuit 30, connection battery.Wherein, resistance R1, R2, R3, transistor Q1, metal-oxide-semiconductor Q2
And Schottky diode D2 realizes the current-limiting charge of battery.
Specifically, charging voltage Vin is normally upper electric, and metal-oxide-semiconductor Q2 conductings, electric current enters and flows through resistance by the second input
R3, resistance R3 mono- terminal voltage raise to above transistor Q1 Vbe, transistor Q1 conducting, cause metal-oxide-semiconductor Q2 G pole tensions to drag down
And by charging current reduces.The terminal voltages of resistance R3 mono- reduce therewith after charging current reduces, and are decreased to after certain value, crystal
Pipe Q1 is by metal-oxide-semiconductor Q2 recovers conducting conducting state, continues and charges a battery, and so on, realizes current-limiting charge function.
Adjustment R3 resistance can adjust the size of charging current.
Governor circuit 20 is provided with the first power input 21, the power input 23 of second source input 22 and the 3rd, the
One power input 21, the power input 23 of second source input 22 and the 3rd are all connected with system load, are entered by system load
Row power supply+12Vin.Governor circuit 20 includes resistance R4~R9, controllable accurate source of stable pressure U1 and transistor Q3, Q4.
It is grounded after first power input 21 connection resistance R4 one end, resistance R4 other end connection resistance R5.Resistance
R6 two ends are connected to resistance R5 two ends, for partial pressure.Resistance R5 two ends are also associated with an electric capacity C3, electric capacity C3 with
Resistance R4, R5, R6 constitute division module 24.
The connection resistance of second source input 22 R7 one end, the resistance R7 other end is connected to controllable accurate source of stable pressure U1
Negative electrode, controllable accurate source of stable pressure U1 plus earth, controllable accurate source of stable pressure U1 reference pole is connected to resistance R5 one end.
Further, controllable accurate source of stable pressure U1 negative electrode and anode is also respectively connected with electric capacity C4 and electric capacity C5 two ends.
3rd power input 23 connection resistance R8 one end, resistance R8 other end connection transistor Q3 colelctor electrode,
Transistor Q3 base stage connects the negative electrode that controllable accurate source of stable pressure U1 is connected to after a voltage-regulator diode ZD1, transistor Q3 hair
Emitter grounding.The colelctor electrode of the transistor Q3 is also connected with the negative electrode of a voltage-regulator diode ZD2, voltage-regulator diode ZD2 anode
Transistor Q4 base stage is connected, line control circuit 30, transistor Q4 grounded emitter are held in transistor Q4 colelctor electrode connection.
After system load normally upper electricity, the first power input 21 accesses+12Vin, more than the battery under-voltage protection of setting
Value, the magnitude of voltage of division module 24 is more than 2.5V, and controllable accurate source of stable pressure U1 is turned on, and now voltage-regulator diode ZD1 reversely ends,
Then transistor Q3 does not have bias voltage and ended, and voltage-regulator diode ZD2 conductings, transistor Q4 obtains bias voltage and turned on, holds
Line control circuit 30 starts to be charged to battery.After system load dead electricity, charging voltage VinRemove, in electric capacity C1 and electricity
In the presence of appearance C2, the voltage+12V of system loadinDo not fall under under-voltage protection value, continue to charge a battery.When+
12VinUnder-voltage protection value is dropped to, when the magnitude of voltage of division module 24 is less than 2.5V, controllable accurate source of stable pressure U1 cut-offs, the pole of voltage stabilizing two
Pipe ZD1 is turned on, and transistor Q3 is obtained and turned on after bias voltage, voltage-regulator diode ZD2 cut-offs, transistor Q4 lose bias voltage and
Cut-off, holds the adhesive that the dead electricity of line control circuit 30 disconnects relay, plays a part of protecting battery.When loading charging voltage again
VinAfterwards, said process is repeated, automatic start is charged to battery.
Line control circuit 30 is held provided with control power input, control power output end, charging input end and charging output
End.Holding line control circuit 30 includes a relay RLY1 and diode D3, and diode D3 anode connection controls power output end,
Diode D3 negative electrode connection control power input, control power input connection system load, to obtain driving power supply.After
Electrical equipment RLY1 is connected to diode D3 two ends, to produce magnetic force.Second output of charging input end connection charging circuit 10
End, charging output end connects the positive pole of battery.
As charging voltage VinDuring normal load, the transistor Q4 saturation conductions in governor circuit 20, relay RLY1 line
Circle is powered, and normally-closed contact S1 disconnects, and normally opened contact S2 is closed, and the electric current of charging circuit 10 passes through normally-closed contact S2 to battery
Charged；When power was lost, the voltage V of batterybat+When dropping to under-voltage protection value, relay RLY1 normally-closed contact S1 is closed
Close, normally opened contact S2 disconnects, protect battery.
Above-mentioned charging protection circuit for storage battery, circuit structure design is simple, feature-rich, is integrated with battery charge limit
Stream, battery under-voltage protection, voltage recover a variety of functions such as self-starting charging, realize a variety of protections to battery, prevent battery
Voltage is counter in charging process fills, it is ensured that the service life and security of battery.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of charging protection circuit for storage battery, for battery charging, it is characterised in that including a charging circuit, master control electricity
Road and connect the charging circuit and the governor circuit respectively hold line control circuit；The charging circuit is provided with the first input
End, the second input, the first output end and the second output end；The first input end connects a charging voltage Vin, described second
Input connects the negative pole of the battery, and first output end connects system load, and the second output end connection is described
Hold line control circuit；It is described to hold the positive pole that line control circuit connects the battery.
2. charging protection circuit for storage battery according to claim 1, it is characterised in that the charging circuit includes some two
Pole pipe D1, electric capacity C1, C2, resistance R1, R2, R2, transistor Q1, metal-oxide-semiconductor Q2 and a Schottky diode D2；The charging circuit
Also there is an earth terminal, described electric capacity C1, C2 are connected between first output end and the earth terminal.
3. charging protection circuit for storage battery according to claim 2, it is characterised in that the quantity of the diode D1 is
Two；One end of anode connects the first input end after diode D1 described in two is in parallel, and one end connection of negative electrode is described after parallel connection
First output end.
4. charging protection circuit for storage battery according to claim 2, it is characterised in that the drain electrode connection of the metal-oxide-semiconductor Q2
Second input, its grid connects the resistance R1, and its source electrode connects earth terminal after connecting the resistance R3.
5. charging protection circuit for storage battery according to claim 1, it is characterised in that the governor circuit is provided with the first electricity
Source input, the second telephone input and the 3rd power input, first power input, the second source input
And the 3rd power input is all connected with the system load, is powered by the system load.
6. charging protection circuit for storage battery according to claim 5, it is characterised in that the governor circuit includes resistance
R4, R5, R6, R7, R8, R9, controllable accurate source of stable pressure U1 and transistor Q3, Q4, wherein the two ends of the resistance R5 are connected with one
Electric capacity C3.
7. charging protection circuit for storage battery according to claim 6, it is characterised in that the first power input connection
It is grounded after one end of the resistance R4, resistance R4 other end connection resistance R5；The two ends of the resistance R6 are connected to institute
State resistance R5 two ends.
8. charging protection circuit for storage battery according to claim 7, it is characterised in that the second source input connection
Tell one end of the resistance R7, the other end of the resistance R7 is connected to the negative electrode of the controllable accurate source of stable pressure U1, it is described can
Precision voltage regulator U1 plus earth is controlled, the reference pole of the controllable accurate source of stable pressure U1 is connected to one end of the resistance R5.
9. charging protection circuit for storage battery according to claim 8, it is characterised in that the 3rd power input connection
One end of the resistance R8, the other end of the resistance R8 connects the colelctor electrode of the transistor Q3, the base of the transistor Q3
Pole connects the negative electrode that the controllable accurate source of stable pressure U1 is connected to after a voltage-regulator diode ZD1, the emitter stage of the transistor Q3
Ground connection.
10. charging protection circuit for storage battery according to claim 9, it is characterised in that the colelctor electrode of the transistor Q3
The negative electrode of a voltage-regulator diode ZD2 is also connected with, the anode of the voltage-regulator diode ZD2 connects the base stage of the transistor Q4, institute
State and hold line control circuit, the grounded emitter of the transistor Q4 described in transistor Q4 colelctor electrode connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447701.3A CN107124022A (en) | 2017-06-14 | 2017-06-14 | Charging protection circuit for storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447701.3A CN107124022A (en) | 2017-06-14 | 2017-06-14 | Charging protection circuit for storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107124022A true CN107124022A (en) | 2017-09-01 |
Family
ID=59718309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710447701.3A Pending CN107124022A (en) | 2017-06-14 | 2017-06-14 | Charging protection circuit for storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107124022A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245748A (en) * | 2018-10-16 | 2019-01-18 | 中国石油大学(华东) | A kind of power-off self-start circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012105413A (en) * | 2010-11-09 | 2012-05-31 | Taiyo Ltd | Charge/discharge circuit and motor drive circuit |
| WO2015051688A1 (en) * | 2013-10-09 | 2015-04-16 | 珠海格力电器股份有限公司 | Protective circuit for input voltage of switch power source |
| CN206922463U (en) * | 2017-06-14 | 2018-01-23 | 中能易电新能源技术有限公司 | Charging protection circuit for storage battery |
-
2017
- 2017-06-14 CN CN201710447701.3A patent/CN107124022A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012105413A (en) * | 2010-11-09 | 2012-05-31 | Taiyo Ltd | Charge/discharge circuit and motor drive circuit |
| WO2015051688A1 (en) * | 2013-10-09 | 2015-04-16 | 珠海格力电器股份有限公司 | Protective circuit for input voltage of switch power source |
| CN206922463U (en) * | 2017-06-14 | 2018-01-23 | 中能易电新能源技术有限公司 | Charging protection circuit for storage battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245748A (en) * | 2018-10-16 | 2019-01-18 | 中国石油大学(华东) | A kind of power-off self-start circuit |
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