CN108599285A - A kind of direct current output counnter attack filling protection circuit - Google Patents
A kind of direct current output counnter attack filling protection circuit Download PDFInfo
- Publication number
- CN108599285A CN108599285A CN201810011983.7A CN201810011983A CN108599285A CN 108599285 A CN108599285 A CN 108599285A CN 201810011983 A CN201810011983 A CN 201810011983A CN 108599285 A CN108599285 A CN 108599285A
- Authority
- CN
- China
- Prior art keywords
- circuit
- modules
- input end
- counnter attack
- end mouth
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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 direct current output counnter attacks to fill protection circuit; including driving IC modules, the circuit input end mouth for connecting DC charging module and the circuit output port for connecting battery; string is equipped with power switching modules, driving IC module samples connection circuit input end mouth and circuit output port and controls connection power switching modules between circuit input end mouth and circuit output port.The present invention goes here and there between DC charging module and battery and sets a power switching modules; drive IC modules acquisition DC charging module output voltage and cell voltage; power switching modules conducting and disconnection are controlled by comparing the size of two voltages; each device reaction speed is fast; control reliability is high; avoid the anti-filling phenomenon of cell voltage, effective protection charging module.
Description
Technical field
The present invention relates to a kind of direct current output counnter attacks to fill protection circuit, belongs to power electronics field.
Background technology
When charger module charges the battery, object of the battery as charging, while being also the load of power supply.When filling
When power supply stops output, battery can give charger module outlet side to power, that is, have and pour in down a chimney phenomenon.If charger mould
Block does not have counnter attack to fill protection circuit, and battery capacity not only wastes, and excessively high anti-filling voltage is also possible to make charger module
At damage.Therefore, providing counnter attack filling protection circuit in the DC output side of charger module is very important.
Notification number is that the Chinese patent document of CN203278367U discloses a kind of high power battery preventing battery reversal connection
Charging unit cooperates by using devices such as a relay switch and voltage collection circuits to prevent battery charge
Anti- filling phenomenon.But relay switch delay of response, the phenomenon that being susceptible to adhesion, control reliability is poor.
Invention content
The object of the present invention is to provide a kind of direct current output counnter attacks to fill protection circuit, anti-using relay switch for solving
Only battery charge is counter fills the poor problem of control reliability.
In order to solve the above technical problems, the present invention provides a kind of direct current output counnter attacks to fill protection circuit, including with lower section
Case：
Scheme one：Including driving IC modules, the circuit input end mouth for connecting DC charging module and for connecting
The circuit output port of battery, string is equipped with power switching modules between the circuit input end mouth and circuit output port, described
Driving IC module samples connect the circuit input end mouth and circuit output port and control the connection power switching modules.
Scheme two：On the basis of scheme one, the power switching modules include the first power switch, the driving IC moulds
Block control connects the control terminal of first power switch.
Scheme three：On the basis of scheme two, first power switch has been arranged in parallel the second power switch, the drive
Dynamic IC modules control connects the control terminal of second power switch.
Scheme four：On the basis of scheme three, the control terminal of each power switch and the driving IC modules and circuit are defeated
Counnter attack diode branch and resistance branch are connected separately between inbound port.
Scheme five：On the basis of scheme four, first power switch and the second power switch are PMOS tube, each
The drain electrode of PMOS tube and source electrode respectively connect the circuit input end mouth and circuit output port；The counnter attack diode branch
Middle string is equipped with diode, and the conducting direction of the diode is from circuit input end mouth to driving IC modules.
Scheme six：On the basis of scheme one, two, three, four or five, the driving IC modules include model
The IC chip of ISL6144IVZ.
The beneficial effects of the invention are as follows：
String sets a power switching modules between DC charging module and battery, and driving IC modules acquire and compare direct current
The output voltage of charging module and the voltage of battery, when the output voltage of DC charging module is higher than the voltage of battery, work(
Rate switch module is connected, and DC charging module is charged normal to battery；Stop exporting suddenly when there is DC charging module
When, detect that the output voltage of DC charging module is less than the voltage of battery at this time, power switching modules disconnect, direct current
Closed circuit is not reconstructed between charging module and battery, to avoid the anti-filling phenomenon of cell voltage, each device reaction speed
Degree is fast, control reliability is high, effective protection charging module.
Further, the drain electrode of PMOS tube and source electrode are separately connected DC charging module and battery, when PMOS tube is ended,
Parasitic diode reverse bias in PMOS tube counter will not be poured into DC charging module by the voltage from battery.
Description of the drawings
Fig. 1 is that the direct current output counnter attack of the present invention fills the structural schematic diagram of protection circuit.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing and specific implementation
The present invention will be described in further detail for example.
The present invention direct current output counnter attack fill protection circuit structural schematic diagram as shown in Figure 1, including power switching modules,
Drive IC modules and periphery bleeder circuit, the circuit input end mouth VO1 for connecting DC charging module and for connecting electricity
The circuit output port VO in pond, circuit input end mouth VO1 are for connecting DC charging module, and circuit output port VO is for connecting
Battery to be charged.Wherein, power switching modules string is located between circuit input end mouth VO1 and circuit output port VO, drives IC
Module samples connect circuit input end mouth VO1 and circuit output port VO and control connection power switching modules.
Specifically, power switching modules include the first power switch Q1 being connected in parallel and the second power switch Q2, two
Power switch is PMOS tube, model FDH055N15A.It is defeated that the drain electrode of each PMOS tube and source electrode respectively connect circuit
Inbound port VO1 and circuit output port VO, driving IC module pass through the grid of resistance R3 and R5 control two PMOS tube of connection respectively
Pole control terminal.
It is connected with first resistor branch between the control terminal and circuit input end mouth VO1 of the first power switch PMOS tube Q1
Road, string is equipped with resistance R1 in the first resistor branch, the first power switch PMOS tube Q1 control terminal and driving IC modules it
Between be connected with the first counnter attack diode branch, in the first counnter attack diode branch string be equipped with diode D1 and resistance R4.
It is connected with second resistance branch between the control terminal and circuit input end mouth VO1 of two power switch PMOS tube Q2, the second resistance
String is equipped with resistance R2 in branch, and the second counnter attack is connected between the control terminal and driving IC modules of the second power switch PMOS tube
Diode branch, string is equipped with diode D2 and resistance R6 in the second counnter attack diode branch.Wherein, the type of diode D1 and D2
Number be 1N5819, direction be from circuit input end mouth VO1 to driving IC modules, i.e., when diode D1 and D2 are connected,
Current direction is from circuit input end mouth VO1 to driving IC modules.
Certainly, as other embodiments, above-mentioned power switching modules can also be only by a power switch PMOS
Pipe and its corresponding electrical part are constituted, or by more than two power switch PMOS tube being connected in parallel and its corresponding electricity
Device is constituted.When by multiple power switch PMOS tube parallel connections, charging current can be improved with the current-carrying capability of increasing circuit.
Driving IC modules include the IC chip U1 of model ISL6144IVZ, and the pin GATE of wherein U1 is as control
Signal output end processed passes through the grid control terminal of resistance R3 and R5 control the first and second power switch PMOS tube of connection respectively.U1's
Pin VIN sampling connection circuit input end mouth VO1, are connected with capacitance C1, in drawing for U1 between the pin HVREF and VIN of U1
Capacitance C2 is connected between foot VIN and ground.The pin COMP of U1 detects cell voltage by the potential-divider network of resistance R7, R8,
The both ends of resistance R7 are connected with the pin of capacitance C3, U1By resistance R9+12V power supplys are connected with diode D3.In electricity
Between road output port VO and GND, it is also associated with capacitance C4.
In the present embodiment, the voltage at the ends VO1/VO is 40V~60V, and the resistance value of resistance R1, R2 is 10K Ω, R3, R4,
The resistance value of R5, R6 are 5.1 Ω, and the resistance value of R7 is 499 Ω, and it is the electricity of 3k Ω, C1 that the resistance value of R8, which is the resistance value of 47.5K Ω, R9,
Capacitance is 150nF, and the capacitance of C2 100nF/100V, C3 are 10nF, C4 100nF/100V.Certainly, above-mentioned each device
Design parameter do not limit, can according to application be adaptively adjusted.
The operation principle that the direct current output counnter attack fills protection circuit is as follows：
Drive the voltage of pin VIN Acquisition Circuits input port VO1, that is, DC charging module of IC modules U1, the pin of U1
COMP by the potential-divider network of R7, R8 come the voltage of detection circuit output port VO, that is, battery, by comparing two sampled voltages,
When the voltage of charging module is higher than cell voltage, the pin COMP and GATE of U1 export high level, two PMOS tube Q1 and Q2
By the same signal control of GATE feet of U1, there are gate drive voltage, Q1 and Q2 conductings, DC charging module bio-occlusion battery
Charging.For PMOS tube in conducting, drain electrode and the pressure drop of source electrode both ends are relatively low, can effectively reduce output voltage loss, reduce this portion
The power consumption divided.In addition, because the pressure drop of PMOS tube is less than the pipe pressure of its parasitic diode, parasitic diode is bypassed.
When driving IC modules U1 to detect that the voltage of charging module is less than cell voltage, the pin COMP and GATE of U1 is defeated
Go out low level, two PMOS tube Q1 and Q2 turn-on deadline, DC charging module no longer charges the battery.At this time since PMOS tube is cut
Only, circuit is not reconstructed between charging module and battery, to avoid the anti-filling of cell voltage, plays the guarantor to charging module
Shield acts on.
In the present invention, PMOS tube accesses circuit not in accordance with common standard connection, because if according to PMOS tube
Standard connection, it should be the source electrode of circuit input end mouth VO1 connection PMOS tube, the leakage of circuit output port VO connection PMOS tube
Pole, the direction of such PMOS tube parasitic diode are to be directed toward circuit input end mouth VO1 from circuit output port VO.The ends VO are come in this way
It can be poured in down a chimney from the voltage of battery to VO1 by parasitic diode.Scheme using the present invention, parasitic diode direction are from circuit
Input port VO1 to circuit output port VO, when PMOS tube is ended, voltage of the ends VO from battery is reversed parasitic diode
Biasing, counter will not fill to VO1.
Claims (6)
1. a kind of direct current output counnter attack fills protection circuit, which is characterized in that including driving IC modules, for connecting DC charging mould
The circuit input end mouth of block and circuit output port for connecting battery, the circuit input end mouth and circuit output port
Between string be equipped with power switching modules, the driving IC module samples connection circuit input end mouth and circuit output port,
And control the connection power switching modules.
2. direct current output counnter attack according to claim 1 fills protection circuit, which is characterized in that the power switching modules packet
The first power switch is included, the driving IC modules control connects the control terminal of first power switch.
3. direct current output counnter attack according to claim 2 fills protection circuit, which is characterized in that first power switch is simultaneously
Connection is provided with the second power switch, and the driving IC modules control connects the control terminal of second power switch.
4. direct current output counnter attack according to claim 3 fills protection circuit, which is characterized in that the control of each power switch
It is connected separately with counnter attack diode branch and resistance branch between end and the driving IC modules and circuit input end mouth.
5. direct current output counnter attack according to claim 4 fills protection circuit, which is characterized in that first power switch and
Second power switch is PMOS tube, and the drain electrode of each PMOS tube and source electrode respectively connect the circuit input end mouth and circuit
Output port；String is equipped with diode in the counnter attack diode branch, and the conducting direction of the diode is from circuit input end
Mouth arrives driving IC modules.
6. direct current output counnter attack according to any one of claims 1-5 fills protection circuit, which is characterized in that the driving
IC modules include the IC chip of model ISL6144IVZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810011983.7A CN108599285B (en) | 2018-01-05 | 2018-01-05 | Direct current output prevents flowing backward protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810011983.7A CN108599285B (en) | 2018-01-05 | 2018-01-05 | Direct current output prevents flowing backward protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108599285A true CN108599285A (en) | 2018-09-28 |
| CN108599285B CN108599285B (en) | 2020-12-04 |
Family
ID=63599801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810011983.7A Active CN108599285B (en) | 2018-01-05 | 2018-01-05 | Direct current output prevents flowing backward protection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN108599285B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995235A (en) * | 2019-04-30 | 2019-07-09 | 广东美的制冷设备有限公司 | Intelligent power module and electrical equipment |
| CN112843491A (en) * | 2021-02-08 | 2021-05-28 | 深圳天基权健康科技集团股份有限公司 | Switching circuit, semiconductor laser treatment equipment and power supply switching control method |
| WO2022032762A1 (en) * | 2020-08-14 | 2022-02-17 | 精进电动科技股份有限公司 | Anti-reverse connection circuit, and electronic parking brake circuit and control method therefor |
| CN118567406A (en) * | 2024-07-30 | 2024-08-30 | 深圳市森威尔科技开发股份有限公司 | Signal output circuit and temperature control equipment |
| CN118567406B (en) * | 2024-07-30 | 2024-10-22 | 深圳市森威尔科技开发股份有限公司 | Signal output circuit and temperature control equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995235A (en) * | 2019-04-30 | 2019-07-09 | 广东美的制冷设备有限公司 | Intelligent power module and electrical equipment |
| CN109995235B (en) * | 2019-04-30 | 2024-03-08 | 广东美的制冷设备有限公司 | Intelligent power module and electrical equipment |
| WO2022032762A1 (en) * | 2020-08-14 | 2022-02-17 | 精进电动科技股份有限公司 | Anti-reverse connection circuit, and electronic parking brake circuit and control method therefor |
| CN112843491A (en) * | 2021-02-08 | 2021-05-28 | 深圳天基权健康科技集团股份有限公司 | Switching circuit, semiconductor laser treatment equipment and power supply switching control method |
| CN112843491B (en) * | 2021-02-08 | 2021-10-08 | 深圳天基权健康科技集团股份有限公司 | Switching circuit, semiconductor laser treatment equipment and power supply switching control method |
| CN118567406A (en) * | 2024-07-30 | 2024-08-30 | 深圳市森威尔科技开发股份有限公司 | Signal output circuit and temperature control equipment |
| CN118567406B (en) * | 2024-07-30 | 2024-10-22 | 深圳市森威尔科技开发股份有限公司 | Signal output circuit and temperature control equipment |
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| Publication number | Publication date |
|---|---|
| CN108599285B (en) | 2020-12-04 |
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