CN206878496U - A kind of constant-current charging of battery manages circuit - Google Patents
A kind of constant-current charging of battery manages circuit Download PDFInfo
- Publication number
- CN206878496U CN206878496U CN201720513148.4U CN201720513148U CN206878496U CN 206878496 U CN206878496 U CN 206878496U CN 201720513148 U CN201720513148 U CN 201720513148U CN 206878496 U CN206878496 U CN 206878496U
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- triode
- charging
- reference voltage
- 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.)
- Active
Links
Abstract
The utility model is applied to electronic circuit design field, there is provided a kind of constant-current charging of battery manages circuit.Constant-current charging of battery management circuit is based on high side current detection technique, realizes that charging current detects using the detection resistance being arranged between load and power supply, and then adjusts charging current and keep constant.Relative to existing constant-current charge management circuit use special integrated chip, the circuit structure is simple, material is general, cost is low, battery suitability is good, and have the advantages that low voltage difference, electric current greatly, wide input voltage range.Meanwhile overcharge protection circuit is set, charge circuit can be cut off when charging current is excessive, play a part of overcharging protection, improve the reliability of circuit work.
Description
Technical field
The utility model belongs to electronic circuit design field, more particularly to a kind of battery constant current based on high side current detection
Charge management circuit.
Background technology
Rechargeable battery is widely used in mobile phone, Video Camera, notebook computer, wireless electricity with its excellent characteristic
In the portable electric appts such as words, electric tool, remote control or electronic toy, camera.According to the chemical composition of rechargeable battery
Difference, it is necessary to use different charging modes, such as semi-permanent current charging, trickle charge, constant-current charge, constant-voltage charge.
Under constant current charging method, in order to ensure that charging current is constant, and ensure that charging process is safe and reliable, it is necessary to use
Constant-current charge manages circuit.The constant-current charge management circuit that prior art provides is special integrated chip, and cost is higher, electricity
Pond suitability is poor.
Utility model content
The purpose of this utility model is to provide a kind of constant-current charging of battery management circuit, it is intended to solves prior art offer
Constant-current charge management circuit be special integrated chip, cost is higher, the problem of battery suitability difference.
The utility model is achieved in that a kind of constant-current charging of battery management circuit, the constant-current charging of battery management
Circuit includes the first voltage-stabiliser tube of negative electrode connection rechargeable battery positive pole, in addition to：
The overcharge protection circuit of charge circuit is cut off when the voltage of the rechargeable battery exceedes threshold value, it is described to overcharge protection
The anode of first voltage-stabiliser tube described in the three-terminal link of circuit, the 4th end connection rechargeable battery of the overcharge protection circuit are born
Pole；
The reference voltage generating circuit of reference voltage is generated, the first end connection input of the reference voltage generating circuit connects
The positive output end of mouth, the negative output terminal of the second end connection input interface of the reference voltage generating circuit；
Detect charging current and amplify the high-side current detection circuit of output to detection signal, the high side current detection electricity
The first end of overcharge protection circuit described in the three-terminal link on road, the 4th end of the high-side current detection circuit connect the mistake
Fill the second end of protection circuit；
The detection signal that the high-side current detection circuit is exported and the benchmark of reference voltage generating circuit generation
Voltage ratio keeps constant charging current adjustment circuit, the first end of the charging current adjustment circuit compared with to adjust charging current
The first end of the reference voltage generating circuit is connected, the second end of the charging current adjustment circuit connects the reference voltage
Second end of generative circuit, the first of high-side current detection circuit described in the three-terminal link of the charging current adjustment circuit
End, the 4th end of the charging current adjustment circuit connect the second end of the high-side current detection circuit, the charging current
5th end of adjustment circuit connects the generation signal output part of the reference voltage generating circuit, the charging current adjustment circuit
Six end connecting described in high-side current detection circuit detection current output terminal, the 7th end of the charging current adjustment circuit
Connect the control signal output of the overcharge protection circuit.
Wherein, the reference voltage generating circuit may include：First resistor R1, second resistance R2 and the first source of stable pressure U1；
First end of the first end of the first resistor R1 as the reference voltage generating circuit, the first resistor R1
The second end connect the negative electrode and reference edge and the second resistance R2 first end of the first source of stable pressure U1, described the
Second end of the one source of stable pressure U1 anode as the reference voltage generating circuit, the second end of the second resistance R2 is as institute
State the generation signal output part of reference voltage generating circuit.
Wherein, the charging current adjustment circuit may include：3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th
Resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the first triode Q1 of NPN type, the second triode of positive-negative-positive
Q2, the 3rd triode Q3 of positive-negative-positive, the first electric capacity C1, the second electric capacity C2, comparator A1；
First end of the emitter stage of the second triode Q2 as the charging current adjustment circuit, the two or three pole
Threeth end of the pipe Q2 colelctor electrode as the charging current adjustment circuit, the base stage of the second triode Q2 pass through described
Three resistance R3 connections the second triode Q2 emitter stage, the base stage of the second triode Q2 also pass through the 4th resistance
The first end of R4 connections the first triode Q1 colelctor electrode and the first electric capacity C1, the second end of the first electric capacity C1
As the second end of the charging current adjustment circuit, the emitter stage of the first triode Q1 connects the first electric capacity C1's
Second end, the base stage of the first triode Q1 are described by the output end of the 5th resistance R5 connections comparator A1
Comparator A1 power pins are grounded by the second electric capacity C2, and the power pins of the comparator A1 are also connected with described second
The first end of triode Q2 emitter stage and the 6th resistance R6, the grounding pin connection described first of the comparator A1
Triode Q1 emitter stage, the 5th end of the in-phase end of the comparator A1 as the charging current adjustment circuit, the ratio
In-phase end compared with device A1 is also connected with the first end of the 9th resistance R9, and the second end of the 9th resistance R9 connects the comparison
Device A1 grounding pin simultaneously connects institute as the 4th end of the charging current adjustment circuit, the end of oppisite phase of the comparator A1
State the 8th resistance R8 first end and the colelctor electrode of the 3rd triode Q3, the emitter stage connection institute of the 3rd triode Q3
State the 6th resistance R6 first end, the 6th end of the second end of the 8th resistance R8 as the charging current adjustment circuit,
The base stage of the 3rd triode Q3 passes through the second end of the 7th resistance R7 connections the 6th resistance R6, the 6th electricity
Hinder seventh end of R6 the second end also as the charging current adjustment circuit.
Wherein, the high-side current detection circuit may include：Tenth resistance R10, the 11st resistance R11, the 12nd resistance
R12, the 13rd resistance R13, the 14th resistance R14, operational amplifier A 2；
The output end of the operational amplifier A 2 as the high-side current detection circuit detection current output terminal and lead to
The end of oppisite phase of the tenth resistance R10 connections operational amplifier A 2 and the first end of the 14th resistance R14 are crossed, it is described
The in-phase end of operational amplifier A 2 connects the first end of the 12nd resistance R12 and the first end of the 13rd resistance R13,
The second end of the 12nd resistance R12 connects the first end of the 11st resistance R11, and the of the 14th resistance R14
Two ends connect the second end of the 11st resistance R11, and the second end of the 13rd resistance R13 is examined as the high side current
The second end and the 4th end of slowdown monitoring circuit, the first end of the 11st resistance R11 as the high-side current detection circuit
One end, the 3rd end of the second end of the 11st resistance R11 as the high-side current detection circuit.
Wherein, the overcharge protection circuit may include：Second source of stable pressure U2, the 15th resistance R15, the 16th resistance
R16；
Control signal output of the negative electrode of the second source of stable pressure U2 as the overcharge protection circuit, described second is steady
Potential source U2 anode as the overcharge protection circuit the second end and connect the first end of the 16th resistance R16, it is described
Fourth end of the 16th resistance R16 first end also as the overcharge protection circuit, the reference edge of the second source of stable pressure U2
The second end of the 16th resistance R16 and the first end of the 15th resistance R15 are connected, the 15th resistance R15's
First end and threeth end of second end as the overcharge protection circuit.
Above-mentioned constant-current charging of battery management circuit may also include：
The protection circuit against input over-voltage of charge circuit is cut off when accessing the voltage overrate of input interface, it is described defeated
Enter overvoltage crowbar to be arranged between input interface and the reference voltage generating circuit, the protection circuit against input over-voltage
The positive output end of first end connection input interface and the first end of the reference voltage generating circuit, the input overvoltage protection electricity
The negative output terminal of second end connection input interface on road and the second end of the reference voltage generating circuit, the input overvoltage are protected
The control output end of protection circuit connects the 3rd end of the reference voltage generating circuit.
Wherein, the protection circuit against input over-voltage may include：17th resistance R17, the 18th resistance R18, the second voltage stabilizing
Pipe D2 and NPN type the 4th triode Q4；
The base stage of the 4th triode Q4 connects the anode of the second voltage-stabiliser tube D2 and the 18th resistance R18
First end, the second end of the 18th resistance R18 as the protection circuit against input over-voltage the second end and connect described
Four triode Q4 emitter stage, the negative electrode of the second voltage-stabiliser tube D2 connects the first end of the 17th resistance R17, described
First end of 17th resistance R17 the second end as the protection circuit against input over-voltage, the current collection of the 4th triode Q4
Control output end of the pole as the protection circuit against input over-voltage.
Constant-current charging of battery management circuit provided by the utility model is based on high side current detection technique, negative using being arranged on
Carry the detection resistance between power supply and realize that charging current detects, and then adjust charging current and keep constant.Relative to existing perseverance
The special integrated chip that current charge management circuit uses, the circuit structure is simple, material is general, cost is low, battery suitability is good,
And have the advantages that low voltage difference, electric current be big, wide input voltage range.Meanwhile overcharge protection circuit is set, can be in charging current mistake
Charge circuit is cut off when big, plays a part of overcharging protection, improves the reliability of circuit work.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams for the constant-current charging of battery management circuit that the utility model embodiment one provides；
Fig. 2 is the circuit diagram for the constant-current charging of battery management circuit that the utility model embodiment one provides；
Fig. 3 is the circuit theory diagrams for the constant-current charging of battery management circuit that the utility model embodiment two provides；
Fig. 4 is the circuit diagram for the constant-current charging of battery management circuit that the utility model embodiment two provides.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
The utility model provides a kind of constant-current charging of battery management circuit, and the circuit is based on high side current detection technique,
Realize that charging current detects using the detection resistance being arranged between load and power supply, and then adjust charging current and keep constant.
Described in detail below with reference to embodiment：
Embodiment one
The utility model embodiment one provides a kind of constant-current charging of battery management circuit, as shown in figure 1, connecting including negative electrode
The first voltage-stabiliser tube D1 of rechargeable battery BT positive poles is met, in addition to：Cut off and charge back when rechargeable battery BT voltage exceedes threshold value
The overcharge protection circuit 4 on road, the first voltage-stabiliser tube of three-terminal link D1 of overcharge protection circuit 4 anode, overcharge protection circuit 4
4th end connects rechargeable battery BT negative poles；The reference voltage generating circuit 1 of reference voltage is generated, reference voltage generating circuit 1
First end connection input interface J1 positive output end, the second end connection input interface J1's of reference voltage generating circuit 1 is negative defeated
Go out end；Detect charging current and amplify the high-side current detection circuit 3 of output to detection signal, high-side current detection circuit 3
The first end of three-terminal link overcharge protection circuit 4, the 4th end connection overcharge protection circuit 4 of high-side current detection circuit 3
Second end；By the detection signal that high-side current detection circuit 3 exports compared with the reference voltage that reference voltage generating circuit 1 generates
To adjust the charging current adjustment circuit 2 that charging current keeps constant, the first end connection benchmark electricity of charging current adjustment circuit 2
The first end of generative circuit 1 is pressed, the second end of the second end connection reference voltage generating circuit 1 of charging current adjustment circuit 2, is filled
The first end of the three-terminal link high-side current detection circuit 3 of electric matrix current adjustment circuit 2, the 4th of charging current adjustment circuit 2 the
Second end of end connection high-side current detection circuit 3, the 5th end connection reference voltage generation electricity of charging current adjustment circuit 2
The generation signal output part on road 1, the detection electric current of the six end connecting high-side current detection circuit 3 of charging current adjustment circuit 2
Output end, the control signal output of the 7th end connection overcharge protection circuit 4 of charging current adjustment circuit 2.
Wherein, as shown in Fig. 2 reference voltage generating circuit 1 may include：First resistor R1, second resistance R2 and first are steady
Potential source U1.Wherein, first end of the first resistor R1 first end as reference voltage generating circuit 1, the second of first resistor R1
The first source of stable pressure U1 of end connection negative electrode and reference edge and second resistance R2 first end, the first source of stable pressure U1 anode are made
On the basis of voltage generation circuit 1 the second end, the generation signal of second resistance R2 the second end as reference voltage generating circuit 1
Output end.Reference voltage generating circuit 1 provides a high-precision reference voltage by the first source of stable pressure U1 and adjusted to charging current
Whole circuit 2 is compared and adjusted.
Wherein, as shown in Fig. 2 charging current adjustment circuit 2 may include：3rd resistor R3, the 4th resistance R4, the 5th resistance
R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the first triode Q1 of NPN type, the of positive-negative-positive
Two triode Q2, the 3rd triode Q3 of positive-negative-positive, the first electric capacity C1, the second electric capacity C2, comparator A1.Wherein, the second triode
First end of the Q2 emitter stage as charging current adjustment circuit 2, the second triode Q2 colelctor electrode adjust as charging current
3rd end of circuit 2, the second triode Q2 base stage is by 3rd resistor R3 the second triodes of connection Q2 emitter stage, and the two or three
Pole pipe Q2 base stage is also by the 4th resistance R4 the first triodes of connection Q1 colelctor electrode and the first electric capacity C1 first end, and first
Second end of electric capacity C1 the second end as charging current adjustment circuit 2, the first triode Q1 emitter stage connect the first electric capacity
C1 the second end, the first triode Q1 base stage pass through the 5th resistance R5 connection comparators A1 output end, comparator A1 electricity
Source pin is grounded by the second electric capacity C2, and comparator A1 power pins are also connected with the second triode Q2 emitter stage and the 6th
Resistance R6 first end, comparator A1 grounding pin connect the first triode Q1 emitter stage, and comparator A1 in-phase end is made
For the 5th end of charging current adjustment circuit 2, comparator A1 in-phase end is also connected with the 9th resistance R9 first end, the 9th resistance
R9 the second end connects comparator A1 grounding pin and as the 4th end of charging current adjustment circuit 2, and comparator A1's is anti-
Phase end connects the 8th resistance R8 first end and the 3rd triode Q3 colelctor electrode, the 3rd triode Q3 emitter stage connection the 6th
Resistance R6 first end, the 6th end of the 8th resistance R8 the second end as charging current adjustment circuit 2, the 3rd triode Q3's
By the resistance R6 of the 7th resistance R7 connections the 6th the second end, the 6th resistance R6 the second end also adjusts base stage as charging current
7th end of circuit 2.Charging current adjustment circuit 2 is used as executing agency, the detection signal exported by high-side current detection circuit 3
Compared with the reference voltage that reference voltage generating circuit 1 generates, production control signal adjusts the second triode Q2 conducting
Degree, it is achieved thereby that Current Negative Three-Point Capacitance.
Wherein, as shown in Fig. 2 high-side current detection circuit 3 may include：Tenth resistance R10, the 11st resistance R11, the tenth
Two resistance R12, the 13rd resistance R13, the 14th resistance R14, operational amplifier A 2.Wherein, the output end of operational amplifier A 2
As high-side current detection circuit 3 detection current output terminal and pass through the anti-phase of the tenth resistance R10 concatenation operation amplifiers A2
End and the 14th resistance R14 first end, the in-phase end of operational amplifier A 2 connect the 12nd resistance R12 first end and the tenth
Three resistance R13 first end, the 12nd resistance R12 the second end connect the 11st resistance R11 first end, the 14th resistance
R14 the second end connects the 11st resistance R11 the second end, and electricity is detected in the 13rd resistance R13 the second end as high side current
Second end and the 4th end on road 3, the first end of the 11st resistance R11 first end as high-side current detection circuit 3, the 11st
Threeth end of resistance R11 the second end as high-side current detection circuit 3.High-side current detection circuit 3 is constant-current charging of battery
Manage the nuclear unit of circuit.Tenth resistance R10, the 12nd resistance R12, the 13rd resistance R13, the 14th resistance R14 compositions are high
The bridge circuit of side current detecting, tiny voltage error can be caused by flowing through the 11st resistance R11 tiny current error, this electricity
Detection signal is formd after holding up amplification of the difference by operational amplifier A 2, this signal will be delivered in charging current adjustment circuit 2
It is compared and adjusts.When charging current is excessive, the 11st resistance R11 voltage will become big, the output end of operational amplifier A 2
Voltage will improve, control the first triode Q1 base stages level will reduce so that the second triode Q2 conducting degree drop
It is low, it can finally cause the 11st resistance R11 both end voltages to diminish, so as to which charging current can diminish again, finally reach constant current adjustment
Effect.
Wherein, as shown in Fig. 2 overcharge protection circuit 4 may include：Second source of stable pressure U2, the 15th resistance R15, the 16th
Resistance R16.Wherein, control signal output of the second source of stable pressure U2 negative electrode as overcharge protection circuit 4, the second source of stable pressure U2
Anode as overcharge protection circuit 4 the second end and connect the 16th resistance R16 first end, the of the 16th resistance R16
Fourth end of the one end also as overcharge protection circuit 4, the second source of stable pressure U2 reference edge connect the 16th resistance R16 the second end
With the 15th resistance R15 first end, the 15th resistance R15 the second end is as the first end of overcharge protection circuit 4 and the 3rd
End.Overcharge protection circuit 4 passes through the second source of stable pressure U2, the real-time voltage for detecting battery both ends, when more than over-charging of battery protection valve
During value, it will be controlled by comparator A1 and close the second triode Q2, so as to cut off charge circuit, plays the work for overcharging protection
With.
The constant-current charging of battery management circuit that the utility model embodiment one provides is based on high side current detection technique, utilizes
The detection resistance being arranged between load and power supply realizes that charging current detects, and then adjusts charging current and keep constant.Relatively
In the special integrated chip that existing constant-current charge management circuit uses, the circuit structure is simple, material is general, cost is low, battery
Suitability is good, and has the advantages that low voltage difference, electric current be big, wide input voltage range.
Embodiment two
The utility model embodiment two provides a kind of constant-current charging of battery management circuit, as shown in Figure 3.With embodiment one
Difference, in embodiment two, constant-current charging of battery management circuit may also include：When access input interface J1 voltage overrate
When cut off the protection circuit against input over-voltage 5 of charge circuit, protection circuit against input over-voltage 5 is arranged on input interface J1 and reference voltage
Between generative circuit 1, the first end connection input interface J1 of protection circuit against input over-voltage 5 positive output end and reference voltage generation
The first end of circuit 1, the second end connection input interface J1 of protection circuit against input over-voltage 5 negative output terminal and reference voltage generation
Second end of circuit 1, the 3rd end of the control output end connection reference voltage generating circuit 1 of protection circuit against input over-voltage 5.
Specifically, as shown in figure 4, protection circuit against input over-voltage 5 may include：17th resistance R17, the 18th resistance R18,
Second voltage-stabiliser tube D2 and NPN type the 4th triode Q4.Wherein, the 4th triode Q4 base stage connects the second voltage-stabiliser tube D2 sun
Pole and the 18th resistance R18 first end, the 18th resistance R18 the second end as protection circuit against input over-voltage 5 the second end,
And the 4th triode Q4 emitter stage is connected, and the second voltage-stabiliser tube D2 the 17th resistance R17 of negative electrode connection first end, the 17th
First end of resistance R17 the second end as protection circuit against input over-voltage 5, the 4th triode Q4 colelctor electrode is as input overvoltage
The control output end of protection circuit 5 and connect in reference voltage generating circuit 1, the first source of stable pressure U1 reference edge.Battery constant current
In charge management circuit, because input interface J1 is general DC port, in order to ensure consumer's misconnection enters high voltage power supply, herein
There is provided protection circuit against input over-voltage 5 so that cuts off charge circuit during voltage overrate, it is ensured that circuit below is not because of height
Pressure is burnt out.If input interface J1 is the USB port with fixed 5V inputs, protection circuit against input over-voltage 5 can be cancelled, i.e.,
Circuit as shown in embodiment one.
Relative to embodiment one, the constant-current charging of battery management circuit that embodiment two provides, which has, places high voltage power supply access
Protection circuit against input over-voltage 5, further ensure that circuit work security reliability.
In summary, constant-current charging of battery management circuit provided by the utility model is based on high side current detection technique, profit
Realize that charging current detects with the detection resistance being arranged between load and power supply, and then adjust charging current and keep constant.Phase
The special integrated chip used for existing constant-current charge management circuit, the circuit structure is simple, material is general, cost is low, electric
Pond suitability is good, and has the advantages that low voltage difference, electric current be big, wide input voltage range.Meanwhile overcharge protection circuit 4 is set, can
Charge circuit is cut off when charging current is excessive, plays a part of overcharging protection, improves the reliability of circuit work.In addition,
Also settable protection circuit against input over-voltage 5, cuts off charge circuit, it is ensured that circuit below is not in input voltage overrate
Because high pressure is burnt out, the reliability of circuit work is further increased.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (7)
1. a kind of constant-current charging of battery manages circuit, it is characterised in that the constant-current charging of battery management circuit connects including negative electrode
The first voltage-stabiliser tube of rechargeable battery positive pole is connect, in addition to：
The overcharge protection circuit of charge circuit, the overcharge protection circuit are cut off when the voltage of the rechargeable battery exceedes threshold value
Three-terminal link described in the first voltage-stabiliser tube anode, the overcharge protection circuit the 4th end connection negative electrode of chargeable battery；
The reference voltage generating circuit of reference voltage is generated, the first end connection input interface of the reference voltage generating circuit
Positive output end, the negative output terminal of the second end connection input interface of the reference voltage generating circuit；
Detect charging current and amplify the high-side current detection circuit of output to detection signal, the high-side current detection circuit
The first end of overcharge protection circuit described in three-terminal link, the high-side current detection circuit the 4th end connection described in overcharge guarantor
Second end of protection circuit；
The detection signal that the high-side current detection circuit is exported and the reference voltage of reference voltage generating circuit generation
Compare to adjust the charging current adjustment circuit that charging current keeps constant, the first end connection of the charging current adjustment circuit
The first end of the reference voltage generating circuit, the second end of the charging current adjustment circuit connect the reference voltage generation
Second end of circuit, the first end of high-side current detection circuit, institute described in the three-terminal link of the charging current adjustment circuit
The 4th end for stating charging current adjustment circuit connects the second end of the high-side current detection circuit, the charging current adjustment electricity
The generation signal output part of the 5th end connection reference voltage generating circuit on road, the 6th of the charging current adjustment circuit the
End connects the detection current output terminal of the high-side current detection circuit, the 7th end connection institute of the charging current adjustment circuit
State the control signal output of overcharge protection circuit.
2. constant-current charging of battery as claimed in claim 1 manages circuit, it is characterised in that the reference voltage generating circuit bag
Include：First resistor R1, second resistance R2 and the first source of stable pressure U1；
First end of the first end of the first resistor R1 as the reference voltage generating circuit, the of the first resistor R1
Two ends connect the negative electrode and reference edge and the second resistance R2 first end of the first source of stable pressure U1, and described first is steady
Second end of the potential source U1 anode as the reference voltage generating circuit, described in the second end of the second resistance R2 is used as
The generation signal output part of reference voltage generating circuit.
3. constant-current charging of battery as claimed in claim 1 manages circuit, it is characterised in that the charging current adjustment circuit bag
Include：3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance
R9, the first triode Q1 of NPN type, the second triode Q2 of positive-negative-positive, the 3rd triode Q3 of positive-negative-positive, the first electric capacity C1,
Two electric capacity C2, comparator A1；
First end of the emitter stage of the second triode Q2 as the charging current adjustment circuit, the second triode Q2
Threeth end of the colelctor electrode as the charging current adjustment circuit, the base stage of the second triode Q2 passes through the described 3rd electricity
R3 connections the second triode Q2 emitter stage is hindered, the base stage of the second triode Q2 is also connected by the 4th resistance R4
Connect the colelctor electrode of the first triode Q1 and the first end of the first electric capacity C1, the second end conduct of the first electric capacity C1
Second end of the charging current adjustment circuit, the emitter stage of the first triode Q1 connect the second of the first electric capacity C1
End, the base stage of the first triode Q1 pass through the output end of the 5th resistance R5 connections comparator A1, the comparison
Device A1 power pins are grounded by the second electric capacity C2, and the power pins of the comparator A1 are also connected with the two or three pole
The first end of pipe Q2 emitter stage and the 6th resistance R6, the grounding pin of the comparator A1 connect the one or three pole
Pipe Q1 emitter stage, the 5th end of the in-phase end of the comparator A1 as the charging current adjustment circuit, the comparator
A1 in-phase end is also connected with the first end of the 9th resistance R9, and the second end of the 9th resistance R9 connects the comparator A1
Grounding pin and as the 4th end of the charging current adjustment circuit, the end of oppisite phase connection of the comparator A1 described the
The colelctor electrode of eight resistance R8 first end and the 3rd triode Q3, the emitter stage connection described the of the 3rd triode Q3
Six resistance R6 first end, the 6th end of the second end of the 8th resistance R8 as the charging current adjustment circuit are described
3rd triode Q3 base stage passes through the second end of the 7th resistance R7 connections the 6th resistance R6, the 6th resistance R6
Seventh end of second end also as the charging current adjustment circuit.
4. constant-current charging of battery as claimed in claim 1 manages circuit, it is characterised in that the high-side current detection circuit bag
Include：Tenth resistance R10, the 11st resistance R11, the 12nd resistance R12, the 13rd resistance R13, the 14th resistance R14, computing
Amplifier A2；
The output end of the operational amplifier A 2 as the high-side current detection circuit detection current output terminal and pass through institute
State the end of oppisite phase of the tenth resistance R10 connections operational amplifier A 2 and the first end of the 14th resistance R14, the computing
Amplifier A2 in-phase end connects the first end of the 12nd resistance R12 and the first end of the 13rd resistance R13, described
12nd resistance R12 the second end connects the first end of the 11st resistance R11, the second end of the 14th resistance R14
The second end of the 11st resistance R11 is connected, electricity is detected in the second end of the 13rd resistance R13 as the high side current
Second end and the 4th end on road, the first end of the first end of the 11st resistance R11 as the high-side current detection circuit,
Threeth end of the second end of the 11st resistance R11 as the high-side current detection circuit.
5. constant-current charging of battery as claimed in claim 1 manages circuit, it is characterised in that the overcharge protection circuit includes：
Second source of stable pressure U2, the 15th resistance R15, the 16th resistance R16；
Control signal output of the negative electrode of the second source of stable pressure U2 as the overcharge protection circuit, second source of stable pressure
U2 anode as the overcharge protection circuit the second end and connect the first end of the 16th resistance R16, the described tenth
Fourth end of the six resistance R16 first end also as the overcharge protection circuit, the reference edge connection of the second source of stable pressure U2
The second end of the 16th resistance R16 and the first end of the 15th resistance R15, the second of the 15th resistance R15
Hold the first end as the overcharge protection circuit and the 3rd end.
6. the constant-current charging of battery management circuit as described in any one of claim 1 to 5, it is characterised in that the battery constant current
Charge management circuit also includes：
The protection circuit against input over-voltage of charge circuit is cut off when accessing the voltage overrate of input interface, it is described to input
Voltage protection circuit is arranged between input interface and the reference voltage generating circuit, and the first of the protection circuit against input over-voltage
The positive output end of end connection input interface and the first end of the reference voltage generating circuit, the protection circuit against input over-voltage
The negative output terminal of second end connection input interface and the second end of the reference voltage generating circuit, the input overvoltage protection electricity
The control output end on road connects the 3rd end of the reference voltage generating circuit.
7. constant-current charging of battery as claimed in claim 6 manages circuit, it is characterised in that the protection circuit against input over-voltage
Including：17th resistance R17, the 18th resistance R18, the 4th triode Q4 of the second voltage-stabiliser tube D2 and NPN type；
Base stage connection the second voltage-stabiliser tube D2 of 4th triode Q4 anode and the first of the 18th resistance R18
End, the second end of the 18th resistance R18 as the protection circuit against input over-voltage the second end and connect the described 4th 3
Pole pipe Q4 emitter stage, negative electrode connection the 17th resistance R17 of the second voltage-stabiliser tube D2 first end, the described 17th
First end of resistance R17 the second end as the protection circuit against input over-voltage, the colelctor electrode conduct of the 4th triode Q4
The control output end of the protection circuit against input over-voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720513148.4U CN206878496U (en) | 2017-05-10 | 2017-05-10 | A kind of constant-current charging of battery manages circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720513148.4U CN206878496U (en) | 2017-05-10 | 2017-05-10 | A kind of constant-current charging of battery manages circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206878496U true CN206878496U (en) | 2018-01-12 |
Family
ID=61338916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720513148.4U Active CN206878496U (en) | 2017-05-10 | 2017-05-10 | A kind of constant-current charging of battery manages circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206878496U (en) |
-
2017
- 2017-05-10 CN CN201720513148.4U patent/CN206878496U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203630198U (en) | Battery voltage detection circuit | |
| CN105244864A (en) | Anti-flowing backwards protection circuit | |
| CN206164168U (en) | Charging control circuit and charger | |
| CN104779665A (en) | Mobile power supply capable of equalizing charge | |
| CN105334409A (en) | Comprehensive system suitable for characteristic detection of various anti-thunder elements | |
| CN103872736A (en) | Protected charging circuit capable of displaying electric quantity | |
| CN205610238U (en) | Power management integration circuit | |
| CN101783503B (en) | Overvoltage protection circuit | |
| CN207184079U (en) | A kind of portable power source circuit | |
| CN100414810C (en) | Voltage identification short circuit protection constant current voltage stabilizing circuit | |
| CN206878496U (en) | A kind of constant-current charging of battery manages circuit | |
| CN205141658U (en) | Prevent anti - protection circuit of irritating | |
| CN206471812U (en) | A kind of battery pack protection circuit | |
| CN204030645U (en) | The charging circuit of portable power source | |
| CN107046315A (en) | A kind of constant-current charging of battery manages circuit | |
| CN203951221U (en) | A kind of uninterrupted power supply charging circuit | |
| CN206533118U (en) | Low pressure cut-off protection circuit | |
| CN103683394A (en) | Charge protection circuit for storage battery | |
| CN206283271U (en) | A kind of portable power source | |
| CN202797906U (en) | Battery overcharge protection system | |
| CN204794044U (en) | Low -power consumption nickel -hydrogen battery overvoltage protector | |
| CN206742902U (en) | Charger baby charge power auto-adjusting circuit | |
| CN204945282U (en) | A kind of system ensemble being applicable to multiple lightning protection component Characteristics Detection | |
| CN208971214U (en) | Over-charging of battery protects circuit | |
| CN204886242U (en) | A lithium battery measurement circuit for portable on --spot check gauge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 New Industrial Zone No. 1, 2, 3 and 4, Pingdi Street Center Community, Longgang District, Shenzhen City, Guangdong Province Patentee after: Jiawei New Energy Co., Ltd. Address before: 518000 New Industrial Zone No. 1, 2, 3 and 4, Pingdi Street Center Community, Longgang District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Jiawei Photovoltaic Lighting Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |