CN106849304A - A kind of lead acid battery charge circuit - Google Patents
A kind of lead acid battery charge circuit Download PDFInfo
- Publication number
- CN106849304A CN106849304A CN201710199387.1A CN201710199387A CN106849304A CN 106849304 A CN106849304 A CN 106849304A CN 201710199387 A CN201710199387 A CN 201710199387A CN 106849304 A CN106849304 A CN 106849304A
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- CN
- China
- Prior art keywords
- module
- output
- output voltage
- battery charge
- acid battery
- 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.)
- Pending
Links
- 239000002253 acid Substances 0.000 title claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 22
- 230000004913 activation Effects 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
Classifications
-
- H02J7/042—
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of lead acid battery charge circuit, including output voltage setting module, output current setup module；The output voltage setting module is connected with output voltage feedback control module；The output current setup module is connected with output current feedback control module；The output voltage feedback control module, output current feedback control module are connected with PWM control modules；The PWM control modules are connected with positive activation type switch power module；The positive activation type switch power module is connected with output voltage sampling module, output current sampling module.The present invention uses positive activation type switching power circuit topological structure, stepless current limliting and stepless voltage regulation, exports soft start, it is ensured that the efficient and high-adaptability that battery charges, match battery charge characteristic and requirement, improves output conversion efficiency, expands busbar voltage scope.
Description
Technical field
The present invention relates to a kind of lead acid battery charge circuit.
Background technology
Existing lead acid battery charge circuit is typically using the realization of generic hierarchical current limiting switch power module, the type plumbic acid
Battery charging circuit topological structure is inverse-excitation type switch power-supply circuit, and in the case where switching tube is connected, it is high level to be input into
When outlet line in series inductance be discharge condition；Conversely, in the case where switching tube disconnects, being input into output line during for high level
Series inductance is charged state in road.The major defect of existing lead acid battery charge circuit is classification current limliting, inlet highway
Voltage range is small, and output conversion efficiency is low, and caloric value is big, and volume is big.
The content of the invention
The present invention is intended to provide a kind of lead acid battery charge circuit, stepless current limliting and stepless voltage regulation, export soft start, really
The efficient and high-adaptability that battery charges, match battery charge characteristic and requirement are protected, output conversion efficiency is improved, expands bus electricity
Pressure scope.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of lead acid battery charge circuit, bag
Include output voltage setting module, output current setup module；The output voltage setting module and output voltage feedback control mould
Block is connected；The output current setup module is connected with output current feedback control module；The output voltage feedback control mould
Block, output current feedback control module are connected with PWM control modules；The PWM control modules and positive activation type Switching Power Supply mould
Block is connected；The positive activation type switch power module is connected with output voltage sampling module, output current sampling module.
The positive activation type switch power module is by power supply output filter module and the output voltage sampling module, output
Current sample module is connected.
The output voltage setting module includes at least one RC filter circuits, and the output voltage setting module is defeated
Enter for voltage sets pwm signal；The output voltage setting module is output as voltage-set signal.
The output voltage setting module includes four RC filtration modules of series connection.
The output current setup module includes at least one RC filter circuits, and the output current setup module is defeated
Enter for electric current sets pwm signal, the output current setup module is output as current setting signal.
The output current setup module includes four RC filter circuits of series connection.
The output voltage feedback control module includes first comparator；The first comparator positive input terminal input and output
The voltage-set signal of voltage setup module output；The first comparator negative input end is input into the output voltage sampling module
The feedback terminal voltage signal of output.
The output current feedback control module includes the second comparator；The second comparator positive input terminal input and output
The current setting signal of electric current setup module output；The second comparator negative input end is input into the output current sampling module
The feedback end current signal of output.
The PWM control modules include the diode being connected with second comparator output terminal；The first comparator,
Diode anode accesses PWM controller.
The positive activation type switch power module includes metal-oxide-semiconductor；The metal-oxide-semiconductor controlled stage is connected with the PWM control modules；
The source electrode of the metal-oxide-semiconductor is grounded by sampling resistor；The drain electrode of the metal-oxide-semiconductor connects transformer primary side first input end；The change
The input of depressor primary side second accesses dc source；The transformer secondary side two ends are connected with afterflow branch road respectively；The afterflow
Branch road and rectification branch circuit parallel connection.
Compared with prior art, the advantageous effect of present invention is that：The present invention uses positive activation type switching power circuit
Topological structure, stepless current limliting and stepless voltage regulation, export soft start, it is ensured that the efficient and high-adaptability that battery charges, match battery
Charge characteristic and requirement, improve output conversion efficiency, expand busbar voltage scope.
Brief description of the drawings
Fig. 1 is output voltage setting module principle figure of the present invention；
Fig. 2 is output current setup module schematic diagram of the present invention；
Fig. 3 is output voltage feedback control module of the present invention, output current feedback control module, PWM controller, positive activation type switch
Power module, power supply output filter module partial circuit schematic diagram；
Fig. 4 is output voltage sampling module schematic diagram of the present invention；
Fig. 5 is output current sampling module schematic diagram of the present invention.
Specific embodiment
As shown in figure 1, output voltage setting module of the present invention includes four RC filtration modules of series connection, wherein first RC
Filtration module（It is made up of resistance R12 and electric capacity C8）Input（That is the input of output voltage setting module）Input voltage sets
Pwm signal VPWM is put, last RC filtration module（It is made up of R15 and C11）Output end（That is output voltage setting module
Output end）Output voltage setting signal VSET.
As described in Figure 2, output current setup module of the present invention includes four RC filtration modules of series connection, wherein first RC
Filtration module（It is made up of resistance R20 and electric capacity C12）Input（That is the input of output current setup module）Input current
Pwm signal IPWM, last RC filtration module are set（It is made up of R19 and C15）Output end（That is output current setup module
Output end）Output current setting signal ISET.
Such as Fig. 3, output voltage feedback control module includes first comparator U1C；The first comparator positive input terminal is defeated
Enter the voltage-set signal VSET of output voltage setting module output；The first comparator negative input end input output electricity
The feedback terminal voltage signal VMON of pressure sampling module output.The output termination PWM controller control of output voltage feedback control module
Pin（1 pin）, Voltage Feedback control module output end is also by diode D4 connection Current Feedback Control module output ends, diode
Anode connection Voltage Feedback control module output end, negative electrode connection Current Feedback Control module output end.The circuit determines to work as
Preceding which control loop comes into force：When electric current is not up to limit value, voltage control loop comes into force；When electric current reaches limit value, electricity
Voltage-controlled loop failure processed.
The output current feedback control module includes the second comparator U1B；The second comparator positive input terminal input
The current setting signal ISET of output current setup module output；The second comparator negative input end is input into the output current
The feedback end current signal IMON of sampling module output.
The PWM control modules include the diode D4 being connected with second comparator output terminal；Described first compares
Device, diode anode access PWM controller.
The positive activation type switch power module includes metal-oxide-semiconductor Q1；The pin of PWM controller output end 6 connects N-channel by resistance R6
The controlled stage of metal-oxide-semiconductor Q1（Grid）, having between the grid and source electrode of Q1 between the drain electrode of bridging resistance R7, Q1 and source electrode has bridging
The source electrode of electric capacity C7, Q1 is grounded by sampling resistor R8.The current sample terminal of PWM controller（3 pin）It is connected with the source electrode of Q1
Together.The drain electrode of metal-oxide-semiconductor connects transformer T1 primary side first input ends；The input of the transformer primary side second accesses direct current
Source VIN+；The transformer secondary side two ends are connected with afterflow branch road respectively；The afterflow branch road and rectification branch circuit parallel connection.
In the present invention, afterflow branch routing resistance R1 and electric capacity C5 are composed in series, and rectification branch road includes the diode D1 of series connection
And D3, wherein diode D1 with afterflow branch road, diode D3 for π shapes are connected.
In order to filter burr, dc source VIN+ connects filtration module, and the filtration module includes electrochemical capacitor C1 and electrolysis electricity
Hold C1 ceramic condenser C3 in parallel.
Positive activation type switch power module passes through power supply output filter module and the output voltage sampling module, output current
Sampling module connect, power supply output filter module of the invention include resistance R2 connected with electric capacity C6 for filtering harmonic components
Tie point, the second branch road for filtering voltage glitch, second branch road at least includes an electric capacity, in the present invention, the
Two branch roads include the electrochemical capacitor C2 and C4 in parallel with C2；By for filtering current harmonics between tie point, the second branch road
Inductance L1 connection.
In Fig. 3, diode D2 is used to prevent from exporting reversal connection.
As shown in Fig. 3~Fig. 5, the positive output end VOUT+ of power supply output filter module connects output voltage sampling module, output
Voltage sample module includes photoelectric isolation module A, the output end output feedback terminal voltage signal of photoelectric isolation module A
VMON, another output head grounding.
As Fig. 5, output current sampling module meet the negative output terminal VOUT- of power supply output filter module, output current is sampled
Module includes photoelectric isolation module B, the output end output feedback end current signal IMON of photoelectric isolation module B, another
Output head grounding.
In the present invention, by the comparing for setting voltage and back voltage so that output voltage is consistent with voltage is set.Pass through
The comparing of electric current and feedback current is set so that actual output current is consistent with electric current is set.
Claims (10)
1. a kind of lead acid battery charge circuit, it is characterised in that mould is set including output voltage setting module, output current
Block；The output voltage setting module is connected with output voltage feedback control module；The output current setup module and output
Current Feedback Control module is connected；The output voltage feedback control module, output current feedback control module with PWM controls
Module is connected；The PWM control modules are connected with positive activation type switch power module；The positive activation type switch power module and output
Voltage sample module, the connection of output current sampling module.
2. lead acid battery charge circuit according to claim 1, it is characterised in that the positive activation type switch power module
It is connected with the output voltage sampling module, output current sampling module by power supply output filter module.
3. lead acid battery charge circuit according to claim 1, it is characterised in that the output voltage setting module bag
At least one RC filter circuits are included, and the input of the output voltage setting module is voltage setting pwm signal；The output electricity
Pressure setup module is output as voltage-set signal.
4. lead acid battery charge circuit according to claim 3, it is characterised in that the output voltage setting module bag
Include four RC filtration modules of series connection.
5. lead acid battery charge circuit according to claim 1, it is characterised in that the output current setup module bag
At least one RC filter circuits are included, and the input of the output current setup module is electric current setting pwm signal, the output electricity
Stream setup module is output as current setting signal.
6. lead acid battery charge circuit according to claim 5, it is characterised in that the output current setup module bag
Include four RC filter circuits of series connection.
7. lead acid battery charge circuit according to claim 1, it is characterised in that the output voltage feedback control mould
Block includes first comparator；The voltage of the first comparator positive input terminal input and output voltage setup module output sets letter
Number；The first comparator negative input end is input into the feedback terminal voltage signal of the output voltage sampling module output.
8. lead acid battery charge circuit according to claim 7, it is characterised in that the output current feedback control mould
Block includes the second comparator；The electric current of the second comparator positive input terminal input and output electric current setup module output sets letter
Number；The second comparator negative input end is input into the feedback end current signal of the output current sampling module output.
9. lead acid battery charge circuit according to claim 8, it is characterised in that the PWM control modules include with
The diode of the second comparator output terminal connection；The first comparator, diode anode access PWM controller.
10. according to the lead acid battery charge circuit that one of claim 1~9 is described, it is characterised in that the positive activation type switch
Power module includes metal-oxide-semiconductor；The metal-oxide-semiconductor controlled stage is connected with the PWM control modules；The source electrode of the metal-oxide-semiconductor is by adopting
Sample resistance eutral grounding；The drain electrode of the metal-oxide-semiconductor connects transformer primary side first input end；The input of the transformer primary side second is accessed
Dc source；The transformer secondary side two ends are connected with afterflow branch road respectively；The afterflow branch road and rectification branch circuit parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710199387.1A CN106849304A (en) | 2017-03-30 | 2017-03-30 | A kind of lead acid battery charge circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710199387.1A CN106849304A (en) | 2017-03-30 | 2017-03-30 | A kind of lead acid battery charge circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106849304A true CN106849304A (en) | 2017-06-13 |
Family
ID=59141719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710199387.1A Pending CN106849304A (en) | 2017-03-30 | 2017-03-30 | A kind of lead acid battery charge circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN106849304A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2522908Y (en) * | 2001-01-05 | 2002-11-27 | 深圳市中兴通讯股份有限公司 | Power source control device to improve transient property |
| CN2553414Y (en) * | 2002-07-05 | 2003-05-28 | 北京通力环电气股份有限公司 | PWM type high frenquency switch power supply constant voltage/constant current controller |
| CN103151929A (en) * | 2013-03-22 | 2013-06-12 | 深圳市航天新源科技有限公司 | Forward reset circuit suitable for low voltage input |
-
2017
- 2017-03-30 CN CN201710199387.1A patent/CN106849304A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2522908Y (en) * | 2001-01-05 | 2002-11-27 | 深圳市中兴通讯股份有限公司 | Power source control device to improve transient property |
| CN2553414Y (en) * | 2002-07-05 | 2003-05-28 | 北京通力环电气股份有限公司 | PWM type high frenquency switch power supply constant voltage/constant current controller |
| CN103151929A (en) * | 2013-03-22 | 2013-06-12 | 深圳市航天新源科技有限公司 | Forward reset circuit suitable for low voltage input |
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Application publication date: 20170613 |