CN206099461U - NI MH battery charging management circuit - Google Patents
NI MH battery charging management circuit Download PDFInfo
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- CN206099461U CN206099461U CN201621158649.7U CN201621158649U CN206099461U CN 206099461 U CN206099461 U CN 206099461U CN 201621158649 U CN201621158649 U CN 201621158649U CN 206099461 U CN206099461 U CN 206099461U
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- electric capacity
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- 238000000034 method Methods 0.000 claims abstract description 31
- 230000008569 process Effects 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000004065 semiconductor Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 6
- 238000011897 real-time detection Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 229910018095 Ni-MH Inorganic materials 0.000 description 3
- 229910018477 Ni—MH Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Abstract
The utility model discloses a NI MH battery charging management circuit, wherein, interface circuit and voltage conversion circuit are connected, a control circuit arranged in the inner cavity of th, current -voltage detection circuitry, voltage conversion circuit and indicator lamp circuit are connected with the processing chip, control circuit and current -voltage detection circuitry are connected, control circuit is by resistance R4, resistance R5, resistance R6, electric capacity C4, electric capacity C5, inductance L1, diode D1, diode D2, triode Q2 and MOS pipe Q3 constitute. The utility model discloses an is current -voltage detection circuitry real -time detection at NI NI in the MH battery charging process the voltage and the NI of MH battery the charging current of MH battery, handle the chip passes through control circuit regulating voltage and charging current according to the battery status size, do you realize NI the accurate control that the MH battery charges stage by stage, the circuit structure reasonable in design science, it is reliable and stable in the charging process, do you improve NI the safety in utilization of MH battery, extension NI the life of MH battery.
Description
Technical field
The utility model is related to battery charging management technical field, and specifically, more particularly to a kind of NI-MH batteries charge
Management circuit.
Background technology
As the development of Ni-MH battery technologies, cost performance improve constantly, increasingly come to be liked by user, Ni-MH is electric
Pond is high because of energy density, long service life, and from for battery electric quantity, the Ni-MH electric quantity of rechargeable battery of formed objects is than NI-G electricity
Pond is high about 1.5～2 times, and the pollution without cadmium, now has been widely used in various portable electronic equipments, such as mobile phone, number
Camera etc..
At present NI-MH batteries charge the general pressure reduction using battery and charge power supply with realizing charging, and NI-MH batteries charge
Circuit typically only has voltage detecting protection, and the charging interval is long, and charging current cannot be controlled, and such circuit is dangerous, affect electricity
Pond service life, this allows for NI-MH batteries and charges the stable charge management circuit of needs with ensureing the safety of battery.
Utility model content
Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to disclose one kind
NI-MH battery charging management circuits, it can simultaneously detect the NI-MH batteries of battery charge and cell voltage and simple structure
Charge management circuit.
The utility model solves the technical scheme that its technical problem adopted：A kind of NI-MH battery charging management circuits,
Including process chip, control circuit, Current Voltage detection circuit, interface circuit, voltage conversion circuit and indicator light circuit；It is described
Interface circuit is connected with voltage conversion circuit, the control circuit, Current Voltage detection circuit, voltage conversion circuit and indicator lamp
Circuit is all connected with process chip, and the control circuit and Current Voltage detection circuit is connected, the control circuit by resistance R4,
Resistance R5, resistance R6, electric capacity C4, electric capacity C5, inductance L1, diode D1, diode D2, triode Q2 and metal-oxide-semiconductor Q3 composition, institute
State one end of resistance R6 and the output end connection of process chip, the other end of the resistance R6 connect respectively one end of resistance R5 and
The base stage of triode Q2, the other end of the resistance R5 and the emitter stage of triode Q2 are grounded, one end point of the resistance R4
The colelctor electrode of other connecting triode Q2 and the grid of metal-oxide-semiconductor Q3, the other end of the resistance R4 connects respectively the source electrode of metal-oxide-semiconductor Q3
With the output end of interface circuit, one end of the inductance L1 connects respectively the drain electrode of metal-oxide-semiconductor Q3 and the negative electrode of diode D2, described
The other end of inductance L1 connects respectively the anode of one end of electric capacity C4, one end of electric capacity C5 and diode D1, the diode
The anode of D2, the other end of electric capacity C4, the other end of electric capacity C5 are grounded, and the negative electrode of the diode D1 is connected to Current Voltage
The input of detection circuit.
As a kind of preferred embodiment of the present utility model, the electric routing resistance R7 of the Current Voltage detection, resistance R8,
Resistance R9, resistance R10, electric capacity C6 and electric capacity C7 composition, one end of the resistance R7 and the output end connection of control circuit, it is described
The input connection of the other end of resistance R7 one end, one end of electric capacity C7 and process chip respectively with resistance R9, it is described
The other end of resistance R9 and the other end of electric capacity C7 are grounded, and one end of the resistance R8 connects respectively the negative pole of NI-MH batteries
With one end of resistance R10, the other end of the resistance R8 connects respectively the input of process chip and one end of electric capacity C6, described
The other end of resistance R10 and the other end of electric capacity C6 are grounded.
Used as a kind of preferred embodiment of the present utility model, the voltage conversion circuit is by resistance R1, resistance R2, resistance
R3, electric capacity C1, electric capacity C2, electric capacity C3, reference voltage comparator U1 and triode Q1, the reference voltage comparator U1 has ginseng
Pole, three pins of negative electrode and anode are examined, one end of the electric capacity C1 connects respectively one end of resistance R3, the colelctor electrode of triode Q1
And the output end of interface circuit, the other end of the electric capacity C1, the anode of reference voltage comparator U1, one end of resistance R1,
One end of electric capacity C3, one end of electric capacity C2 are grounded, the base stage and base of the other end difference connecting triode Q1 of the resistance R3
The negative electrode of quasi- voltage comparator U1, the other end of the resistance R1 connects respectively reference pole and the resistance of benchmark voltage comparator U1
One end of R2, the other end of the resistance R2, the other end of electric capacity C3, the other end of electric capacity C2 are connected to sending out for triode Q1
Emitter-base bandgap grading, the voltage conversion circuit produces voltage drive and input processing chip.
Used as a kind of preferred embodiment of the present utility model, the voltage drive that the voltage conversion circuit is provided is
3.0V。
Used as a kind of preferred embodiment of the present utility model, the diode D1 and diode D2 is the pole of Schottky two
Pipe.
The utility model has compared with prior art advantages below：
A kind of NI-MH battery charging management circuits disclosed in the utility model, it adopts Current Voltage detection circuit real-time
Detection in NI-MH battery charging process the voltage of NI-MH batteries and NI-MH batteries charging current, process chip according to
Battery status adjusts the size of voltage and charging current by control circuit, realizes the accurate control that NI-MH batteries charge stage by stage
System, circuit structure design reasonable science is reliable and stable in charging process, improves the safety in utilization of NI-MH batteries, extends NI-
The service life of MH batteries.
Description of the drawings
Fig. 1 is a kind of structural representation of specific embodiment of the present utility model；
Fig. 2 is a kind of circuit diagram of specific embodiment of the present utility model.
Description of reference numerals：
1：Process chip, 2：Control circuit, 3：Current Voltage detection circuit, 4：Interface circuit, 5：Voltage conversion circuit, 6：
Indicator light circuit；
R1、R2、R3、R4、R5、R6、R7、R8、R9、R10：Resistance, C1, C2, C3, C4, C5, C6, C7：Electric capacity, L1：Electricity
Sense, U1：Reference voltage comparator, Q1, Q2：Triode, Q3：Metal-oxide-semiconductor, D1, D2：Diode, 2NI-MH：2 section NI-MH batteries.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment describes the utility model specific embodiment：
It should be noted that structure, ratio, size for illustrating in this specification institute accompanying drawing etc., only to coordinate explanation
Content disclosed in book, so that those skilled in the art understands and reads, is not limited to the utility model enforceable
Qualifications, the modification of any structure, the change of proportionate relationship or the adjustment of size, can be generated the utility model is not affected
Effect and the purpose to be reached under, all should still fall obtain the scope that can cover in the technology contents disclosed in the utility model
It is interior.
Meanwhile, in this specification it is cited such as " on ", D score, "left", "right", the term of " centre " and " ", also
Only understanding for ease of narration, and be not used to limit the enforceable scope of the utility model, its relativeness is altered or modified,
Under without essence change technology contents, when being also considered as the enforceable category of the utility model.
As depicted in figs. 1 and 2, it illustrates specific embodiment of the present utility model；As illustrated, the utility model is public
A kind of NI-MH battery charging management circuits opened, including process chip 1, control circuit 2, Current Voltage detection circuit 3, interface
Circuit 4, voltage conversion circuit 5 and indicator light circuit 6；The interface circuit 4 is connected with voltage conversion circuit 5, the control electricity
Road 2, Current Voltage detection circuit 3, voltage conversion circuit 5 and indicator light circuit 6 are all connected with process chip 1, the control electricity
Road 2 and Current Voltage detection circuit 3 is connected, the control circuit 2 by resistance R4, resistance R5, resistance R6, electric capacity C4, electric capacity C5,
Inductance L1, diode D1, diode D2, triode Q2 and metal-oxide-semiconductor Q3 composition, one end of the resistance R6 and process chip 1
Output end connects, and the other end of the resistance R6 connects respectively one end of resistance R5 and the base stage of triode Q2, the resistance R5
The other end and the emitter stage of triode Q2 be grounded, the colelctor electrode of one end difference connecting triode Q2 of the resistance R4 and
The grid of metal-oxide-semiconductor Q3, the other end of the resistance R4 connects respectively the source electrode of metal-oxide-semiconductor Q3 and the output end of interface circuit 4, described
One end of inductance L1 connects respectively the negative electrode of the drain electrode of metal-oxide-semiconductor Q3 and diode D2, and the other end of the inductance L1 connects respectively
The anode of one end, one end of electric capacity C5 and diode D1 of electric capacity C4, the anode of the diode D2, electric capacity C4 it is another
End, the other end of electric capacity C5 are grounded, and the negative electrode of the diode D1 is connected to the input that Current Voltage detects circuit 3.
Preferably, the Current Voltage detects circuit 3 by resistance R7, resistance R8, resistance R9, resistance R10, electric capacity C6 and electricity
Hold the output end connection of C7 compositions, one end of the resistance R7 and control circuit 2, the other end of the resistance R7 is respectively and resistance
The input connection of one end, one end of electric capacity C7 and process chip 1 of R9, the other end of described resistance R9 and electric capacity C7's
The other end is grounded, and one end of the resistance R8 connects respectively the negative pole of NI-MH batteries and one end of resistance R10, the resistance
The other end of R8 connects respectively one end of the input of process chip 1 and electric capacity C6, the other end and electric capacity C6 of the resistance R10
The other end be grounded.
Preferably, the voltage conversion circuit 5 by resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3,
Reference voltage comparator U1 and triode Q1, the reference voltage comparator U1 have with reference to pole, three pins of negative electrode and anode,
One end of the electric capacity C1 connects respectively the output end of one end of resistance R3, the colelctor electrode of triode Q1 and interface circuit 4, institute
State the other end of electric capacity C1, the anode of reference voltage comparator U1, one end of resistance R1, one end of electric capacity C3, the one of electric capacity C2
End is grounded, the base stage and the negative electrode of reference voltage comparator U1 of the other end difference connecting triode Q1 of the resistance R3, institute
The other end for stating resistance R1 connects respectively the reference pole of benchmark voltage comparator U1 and one end of resistance R2, and the resistance R2's is another
One end, the other end of electric capacity C3, the other end of electric capacity C2 are connected to the emitter stage of triode Q1, the voltage conversion circuit 5
Produce voltage drive and input processing chip 1.
When charging normal, the voltage of the Current Voltage detection real-time detection NI-MH battery of circuit 3 is simultaneously transported to process chip 1,
Process chip 1 obtains the voltage of NI-MH batteries, when the voltage of NI-MH batteries is less than 1 setting value of process chip, process chip 1
The conducting of output pwm pulse control triode Q2 and metal-oxide-semiconductor Q3 is charged to battery, and process chip 1 exports a high level, this
When NI-MH batteries be charged as a large current charge.
With the increase in charging interval, the voltage of NI-MH batteries is gradually increasing, and NI-MH batteries are full of soon, Current Voltage inspection
The voltage and charging current of the detection NI-MH batteries of slowdown monitoring circuit 3 are simultaneously transported to process chip 1, the voltage or charging when NI-MH batteries
When electric current is higher than 1 setting value of process chip, process chip 1 exports a low level, and now NI-MH batteries are charged as a small current and fill
Electricity.When NI-MH batteries charge reaches saturation, the output pwm pulse of process chip 1 controls the cut-out of triode Q2 and metal-oxide-semiconductor Q3,
Battery stops charging.Simultaneously process chip 1 controls indicator light circuit 6 to indicate the charged state and charging saturation of NI-MH batteries
State.
The utility model preferred embodiment is explained in detail above in conjunction with accompanying drawing, but the utility model is not limited to
Above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can be with without departing from the utility model
Make a variety of changes on the premise of objective.
Many other changes and remodeling can be made without departing from spirit and scope of the present utility model.It should be appreciated that this reality
Specific embodiment is not limited to new, scope of the present utility model is defined by the following claims.
Claims (5)
1. a kind of NI-MH battery charging management circuits, it is characterised in that：Including process chip, control circuit, Current Voltage detection
Circuit, interface circuit, voltage conversion circuit and indicator light circuit；The interface circuit is connected with voltage conversion circuit, the control
Circuit processed, Current Voltage detection circuit, voltage conversion circuit and indicator light circuit are all connected with process chip, the control circuit
It is connected with Current Voltage detection circuit, the control circuit is by resistance R4, resistance R5, resistance R6, electric capacity C4, electric capacity C5, inductance
L1, diode D1, diode D2, triode Q2 and metal-oxide-semiconductor Q3 composition, one end of the resistance R6 and the output end of process chip
Connection, the other end of the resistance R6 connects respectively one end of resistance R5 and the base stage of triode Q2, and the resistance R5's is another
The emitter stage of end and triode Q2 is grounded, the colelctor electrode and metal-oxide-semiconductor Q3 of one end difference connecting triode Q2 of the resistance R4
Grid, the other end of the resistance R4 connects respectively the source electrode of metal-oxide-semiconductor Q3 and the output end of interface circuit, the inductance L1's
One end connects respectively the negative electrode of the drain electrode of metal-oxide-semiconductor Q3 and diode D2, and the other end of the inductance L1 connects respectively electric capacity C4's
The anode of one end, one end of electric capacity C5 and diode D1, the anode of the diode D2, the other end of electric capacity C4, electric capacity C5
The other end be grounded, the negative electrode of the diode D1 is connected to the input that Current Voltage detects circuit.
2. a kind of NI-MH battery charging management circuits as claimed in claim 1, it is characterised in that：The Current Voltage detection
Electric routing resistance R7, resistance R8, resistance R9, resistance R10, electric capacity C6 and electric capacity C7 composition, one end of the resistance R7 and control
The output end connection of circuit, the other end of resistance R7 one end respectively with resistance R9, one end of electric capacity C7 and processes core
The input connection of piece, the described other end of resistance R9 and the other end of electric capacity C7 is grounded, one end point of the resistance R8
Not Lian Jie NI-MH batteries negative pole and one end of resistance R10, the other end of the resistance R8 connects respectively the input of process chip
End and one end of electric capacity C6, the other end of the resistance R10 and the other end of electric capacity C6 are grounded.
3. a kind of NI-MH battery charging management circuits as claimed in claim 1, it is characterised in that：The voltage conversion circuit
By resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3, reference voltage comparator U1 and triode Q1, the base
Quasi- voltage comparator U1 has with reference to pole, three pins of negative electrode and anode, and one end of the electric capacity C1 connects respectively resistance R3's
The output end of one end, the colelctor electrode of triode Q1 and interface circuit, the other end of the electric capacity C1, reference voltage comparator U1
Anode, one end of resistance R1, one end of electric capacity C3, one end of electric capacity C2 be grounded, the other end of the resistance R3 connects respectively
The base stage of triode Q1 and the negative electrode of reference voltage comparator U1 are connect, the other end of the resistance R1 connects respectively benchmark voltage ratio
One end of reference pole and resistance R2 compared with device U1, the other end of the resistance R2, the other end of electric capacity C3, the other end of electric capacity C2
The emitter stage of triode Q1 is connected to, the voltage conversion circuit produces voltage drive and input processing chip.
4. a kind of NI-MH battery charging management circuits as claimed in claim 3, it is characterised in that：The voltage conversion circuit
The voltage drive of offer is 3.0V.
5. a kind of NI-MH battery charging management circuits as claimed in claim 3, it is characterised in that：The diode D1 and two
Pole pipe D2 is all Schottky diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158649.7U CN206099461U (en) | 2016-10-31 | 2016-10-31 | NI MH battery charging management circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158649.7U CN206099461U (en) | 2016-10-31 | 2016-10-31 | NI MH battery charging management circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206099461U true CN206099461U (en) | 2017-04-12 |
Family
ID=58484973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621158649.7U Expired - Fee Related CN206099461U (en) | 2016-10-31 | 2016-10-31 | NI MH battery charging management circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206099461U (en) |
-
2016
- 2016-10-31 CN CN201621158649.7U patent/CN206099461U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 |