CN110011386A - Battery charger and charger - Google Patents
Battery charger and charger Download PDFInfo
- Publication number
- CN110011386A CN110011386A CN201910378090.0A CN201910378090A CN110011386A CN 110011386 A CN110011386 A CN 110011386A CN 201910378090 A CN201910378090 A CN 201910378090A CN 110011386 A CN110011386 A CN 110011386A
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- circuit
- oxide
- rechargeable battery
- semiconductor
- metal
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- 239000004065 semiconductor Substances 0.000 claims description 92
- 230000005611 electricity Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- 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
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
It includes control circuit, cell switch circuit and reverse-connection preventing circuit that the present invention, which provides a kind of battery charger and charger, the battery charger,；Control circuit is used to detect the voltage of rechargeable battery, and generates low and high level according to the voltage of rechargeable battery and be sent to cell switch circuit；Cell switch circuit connection control circuit disconnects the charge circuit of rechargeable battery when receiving the high level of control circuit transmission for being connected to the charge circuit of rechargeable battery when receiving the low level of control circuit transmission；Reverse-connection preventing circuit connection cell switch circuit is simultaneously for connecting rechargeable battery, and when detecting the positive and negative reversal connection of rechargeable battery, control cell switch circuit disconnects the charge circuit of rechargeable battery.The present invention can be used ball bearing made realization and control the on-off of the charge circuit of rechargeable battery, to make circuit miniaturization and reduce cost, and uses reverse-connection preventing circuit, can prevent the short circuit for causing circuit after rechargeable battery positive and negative anodes are reversed.
Description
Technical field
The present invention relates to battery boosting technology fields, in particular to a kind of battery charger and charger.
Background technique
In existing battery charging management system, the circuit of multiple modules and complexity is needed in the charge control to battery
It switchs to control the transmission process of electric energy.Since circuit is more complicated, module is relatively more, therefore cost of manufacture is relatively high, and
Volume after integrated is larger, is unfavorable for the miniaturization and low cost production of circuit, and the not counnter attack connection function of battery, no
Short circuit caused by being reversely connected because of battery can be prevented well.
Summary of the invention
In view of the above problems, the present invention provides a kind of battery charger and chargers, to use ball bearing made to realize
On-off control to the charge circuit of rechargeable battery, to make circuit miniaturization and reduce cost, and uses reverse-connection preventing circuit,
It can prevent the short circuit that circuit is caused after rechargeable battery positive and negative anodes are reversed.
To achieve the goals above, the present invention adopts the following technical scheme that:
A kind of battery charger, including control circuit, cell switch circuit and reverse-connection preventing circuit；
The control circuit is used to detect the voltage of the rechargeable battery, and raw according to the voltage of the rechargeable battery
The cell switch circuit is sent at low and high level；
Control circuit described in the cell switch circuit connection, in the low level for receiving the control circuit transmission
The charge circuit of rechargeable battery described in Shi Liantong can fill described in disconnection when receiving the high level that the control circuit is sent
The charge circuit of battery；
The reverse-connection preventing circuit connects the cell switch circuit and for connecting the rechargeable battery, detecting
When stating the positive and negative reversal connection of rechargeable battery, the charge circuit that the cell switch circuit disconnects the rechargeable battery is controlled.
It preferably, further include AC-DC charging circuit in the battery charger, the AC-DC charging circuit is used for
The anode of the rechargeable battery is connected, provides DC charging power supply for the rechargeable battery.
Preferably, in the battery charger, the cell switch circuit includes double metal-oxide-semiconductor circuits and metal-oxide-semiconductor
Driving circuit；
Double metal-oxide-semiconductor circuit grounds and the cathode for connecting the rechargeable battery charge electric with the AC-DC
Road and the rechargeable battery formed can on-off charge circuit；
Metal-oxide-semiconductor driving circuit one end connects the control circuit and driving voltage input terminal, and the other end connects institute
Double metal-oxide-semiconductor circuits are stated, for driving voltage to be transmitted to double metal-oxide-semiconductors when receiving the low level that the control circuit is sent
Circuit is connected double metal-oxide-semiconductor circuits and forms charge circuit.
Preferably, in the battery charger, double metal-oxide-semiconductor circuits include the first metal-oxide-semiconductor and the second metal-oxide-semiconductor；
First metal-oxide-semiconductor is connected with the grid of second metal-oxide-semiconductor and is connected to the metal-oxide-semiconductor driving circuit；
First metal-oxide-semiconductor is connected with the source electrode of second metal-oxide-semiconductor；
The drain of first metal-oxide-semiconductor is used to connect the cathode of the rechargeable battery, and the drain of second metal-oxide-semiconductor connects
Ground.
Preferably, in the battery charger, first metal-oxide-semiconductor and second metal-oxide-semiconductor are NMOS tube.
Preferably, in the battery charger, the metal-oxide-semiconductor driving circuit includes triode；
The emitter of the triode connects the driving voltage input terminal；
The base stage of the triode connects the control circuit, in the low level for receiving the control circuit transmission
After the triode is connected；
The collector of the triode connects double metal-oxide-semiconductor circuits, is used for the drive after the triode ON
Voltage transmission is moved to double metal-oxide-semiconductor circuits.
Preferably, in the battery charger, the reverse-connection preventing circuit includes photo-coupler；
First pin of the photo-coupler is used to connect the cathode of the rechargeable battery；
The second pin of the photo-coupler is used to connect the anode of the rechargeable battery；
The third pin of the photo-coupler connects the source electrode of double metal-oxide-semiconductor circuits；
4th pin of the photo-coupler connects the grid of double metal-oxide-semiconductor circuits.
Preferably, in the battery charger, the photo-coupler is photodiode type photo-coupler, photosensitive crystalline substance
Figure photo-coupler, photo resistance type photo-coupler or light-operated brilliant lock type photo-coupler.
It preferably, further include battery discharging circuit in the battery charger；
Described battery discharging circuit one end connects the control circuit for connecting the rechargeable battery, the other end, uses
In the discharge loop for connecting the rechargeable battery after receiving the electric discharge instruction that control circuit is sent.
The present invention also provides a kind of chargers, including the battery charger.
The present invention provides a kind of battery charger, the battery charger include control circuit, cell switch circuit with
And reverse-connection preventing circuit；The control circuit is used to detect the voltage of the rechargeable battery, and according to the rechargeable battery
Voltage generates low and high level and is sent to the cell switch circuit；Control circuit described in the cell switch circuit connection, is used for
It is connected to the charge circuit of the rechargeable battery when receiving the low level that the control circuit is sent, is receiving the control
The charge circuit of the rechargeable battery is disconnected when the high level that circuit processed is sent；The reverse-connection preventing circuit connects the battery and opens
Powered-down road, when detecting the positive and negative reversal connection of the rechargeable battery, controls the battery simultaneously for connecting the rechargeable battery
Switching circuit disconnects the charge circuit of the rechargeable battery.Ball bearing made reality can be used in battery charger of the invention
Now the on-off of the charge circuit of rechargeable battery is controlled, to make circuit miniaturization and reduce cost, and uses anti-reverse electricity
Road can prevent the short circuit that circuit is caused after rechargeable battery positive and negative anodes are reversed.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, letter will be made to attached drawing needed in the embodiment below
It singly introduces, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as to the present invention
The restriction of protection scope.In various figures, part is similarly comprised using similar number.
Fig. 1 is a kind of structural schematic diagram for battery charger that the embodiment of the present invention 1 provides；
Fig. 2 is a kind of structural schematic diagram for battery charger that the embodiment of the present invention 2 provides；
Fig. 3 is a kind of physical circuit connection figure for battery charger that the embodiment of the present invention 2 provides；
Fig. 4 is the NMOS tube structural schematic diagram that the embodiment of the present invention 2 provides；
Fig. 5 is a kind of structural schematic diagram for battery charger that the embodiment of the present invention 3 provides.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
The component of embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, requirement is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
The scope of the present invention of protection, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, this field skill
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Hereinafter, term " includes ", " having " and its cognate that can be used in various embodiments of the present invention are only
It is intended to mean that special characteristic, number, step, operation, the combination of element, component or aforementioned item, and is understood not to first
Exclude the combined presence or increase by one of one or more other features, number, step, operation, element, component or aforementioned item
A or more feature, number, step, operation, element, component or aforementioned item combination a possibility that.
In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply
Relative importance.
Unless otherwise defined, otherwise all terms (including technical terms and scientific terms) used herein have and this
The identical meaning of the various normally understood meanings of embodiment one skilled in the art of invention.The term (such as exists
The term limited in the dictionary generally used) it is to be interpreted as that there is contain identical with situational meaning in the related technical field
Justice and Utopian meaning or meaning too formal will be interpreted as having, unless in various embodiments of the present invention
It is clearly defined.
Embodiment 1
Fig. 1 is a kind of structural schematic diagram for battery charger that the embodiment of the present invention 1 provides.
The battery charger 100 includes control circuit 110, cell switch circuit 120 and reverse-connection preventing circuit 130；
The control circuit 110 detects the voltage of the rechargeable battery 140, and root for connecting rechargeable battery 140
Low and high level, which is generated, according to the voltage of the rechargeable battery 140 is sent to the cell switch circuit 120；
In the embodiment of the present invention, which can be applied to various need to provide charging interface for battery
Product in, such as can apply in battery charger, or be provided in the various electronic products of rechargeable battery, such as
In various portable LED illumination devices and emergency-lighting set.The rechargeable battery 140 also can repeatedly carry out charge and discharge
Battery, for example including lead storage battery and lithium battery etc., meanwhile, the rechargeable battery 140 can also the battery charge electricity
It is dismantled and is replaced in road.
In the embodiment of the present invention, which is provided with control circuit 110, and the control circuit 110 is for connecting
The rechargeable battery 140 is connect, such as the control circuit 110 can be directly connected to the positive and negative anodes of the rechargeable battery 140, be used for
The voltage of rechargeable battery 140 is detected from the positive and negative anodes of rechargeable battery 140.Wherein, may include in the control circuit 110
There is MCU (MCU, Microcontroller Uni, micro-control unit), which is receiving detected rechargeable battery
After 140 voltage, high level or low level can be generated according to the height of voltage, and high level signal or low level signal are sent out
It send to cell switch circuit 120.Wherein, voltage decision circuitry also can be set in the control circuit 110, voltage judgement electricity
Road is used to judge the height of the voltage of rechargeable battery 140, generates high level when voltage is higher than certain value, is lower than certain value in voltage
Shi Shengcheng low level, and high level signal or low level signal are transmitted in cell switch circuit 120, it is opened to carry out battery
The control on powered-down road 120.
The cell switch circuit 120 connects the control circuit 110, for receiving the hair of control circuit 110
The charge circuit of the rechargeable battery 140 is connected to when the low level sent, the height that the control circuit 110 is sent is electric receiving
Usually make the charge circuit for disconnecting the rechargeable battery 140；
It include cell switch circuit 120, cell switch electricity in the battery charger 100 in the embodiment of the present invention
Road 120 connects above-mentioned control circuit 110, and filling for rechargeable battery 140 is connected to after receiving the low level that control circuit 110 is sent
Electrical circuit makes rechargeable battery 140 charge, and cuts off rechargeable battery after receiving the high level that control circuit 110 is sent
140 charge circuit makes rechargeable battery 140 stop charging.Wherein, above-mentioned cell switch circuit 120 is one controllable
Switching circuit carries out the opening and closing of circuit by receiving control signal, therefore can connect in the charge circuit of rechargeable battery 140
In, such as can be set between charge power supply and rechargeable battery 140, one end connects power supply, and the other end connects chargeable electricity
The anode in pond 140 receives the connection of control signal control charge power supply and rechargeable battery 140；Also it can be set in chargeable electricity
The cathode of between pond 140 and ground connection namely 120 one end of cell switch circuit connection rechargeable battery, other end ground connection are formed
Controllable charge circuit.
In the embodiment of the present invention, which is used to detect the voltage of rechargeable battery 140, in rechargeable battery
When 140 brownout namely when the rechargeable battery 140 is charged, low level can be sent to cell switch circuit
120, make cell switch circuit communication charge circuit.During charging, which can be filled with real-time detection
The voltage of battery 140, or voltage detecting is carried out according to the preset time interval, detecting the rechargeable battery 140
Voltage reaches scheduled voltage value, then high level can be transmitted to cell switch circuit 120, cell switch circuitry cuts is made to charge
Circuit.
The reverse-connection preventing circuit 130 connects the cell switch circuit 120 and for connecting rechargeable battery 140, is examining
When measuring the 140 positive and negative reversal connection of rechargeable battery, controls the cell switch circuit 120 and disconnect the rechargeable battery 140
Charge circuit.
It further include the reverse-connection preventing circuit for having rechargeable battery 140 in the battery charger 100 in the embodiment of the present invention,
The reverse-connection preventing circuit 130 is used to be directly connected to the positive and negative anodes of rechargeable battery 140 when rechargeable battery 140 is arranged, and detection can
Rechargeable battery 140 when being charged using battery charger 100 positive and negative anodes either with or without reversal connection.Wherein, the prevention street circuit
130 can connect to cell switch circuit 120, and when detecting rechargeable battery 140 in setting, positive and negative anodes are reversely connected, then can control
The charge circuit of the cell switch circuit 120 disconnection rechargeable battery 140.
Embodiment 2
Fig. 2 is a kind of structural schematic diagram for battery charger that the embodiment of the present invention 2 provides.
The battery charger 200 includes control circuit 210, cell switch circuit 220 and reverse-connection preventing circuit 230；
The control circuit 210 detects the voltage of the rechargeable battery 240, and root for connecting rechargeable battery 240
Low and high level, which is generated, according to the voltage of the rechargeable battery 240 is sent to the cell switch circuit 220；
The cell switch circuit 220 connects the control circuit 210, for receiving the transmission of control circuit 210
The charge circuit of the rechargeable battery 240 is connected to when low level, when receiving the high level that the control circuit 210 is sent
Disconnect the charge circuit of the rechargeable battery 240；
The reverse-connection preventing circuit 230 connects the cell switch circuit 220 and for connecting rechargeable battery 240, is examining
When measuring the 240 positive and negative reversal connection of rechargeable battery, controls the cell switch circuit 220 and disconnect the rechargeable battery 240
Charge circuit.
The battery charger 200 further includes AC-DC charging circuit 250, and the AC-DC charging circuit 250 is for connecting
The anode of the rechargeable battery 240 provides DC charging power supply for the rechargeable battery 240.
In the embodiment of the present invention, battery charger can also include AC-DC charging circuit 250 (AC-DC,
Alternating current-Direct current, AC-DC), which can connect
Alternating current, the other end are used to connect the anode of rechargeable battery 240, and the mains electric energy that will acquire is chargeable by being rectified into this
The direct current energy of battery 240.Wherein, the output of the direct current energy can constant pressure after first constant current, filled for the rechargeable battery 240
Electricity, this is without limitation.Wherein, a diode is additionally provided between the AC-DC charging circuit 250 and rechargeable battery 240, it should
The conducting direction of diode is AC-DC charging circuit 250 to rechargeable battery 240, to prevent the voltage mistake of rechargeable battery 240
It is high and flow backward charging current, prevent AC-DC charging circuit 250 from damaging because of reverse irrigated current.
In the embodiment of the present invention, physical circuit connection figure as shown in Figure 3, above-mentioned cell switch circuit 220 includes double MOS
Pipe circuit 221 and metal-oxide-semiconductor driving circuit 222.That is, the cell switch circuit 220 passes through metal-oxide-semiconductor (MOS, metal oxide
Semiconductor, Metal-oxide-semicondutor) control rechargeable battery 240 charge circuit connection and cutting.
Double ground connection of metal-oxide-semiconductor circuit 221 and the cathode for connecting the rechargeable battery, fill with the AC-DC
Circuit 250 and the rechargeable battery 240 formed can on-off charge circuit.
In the embodiment of the present invention, double metal-oxide-semiconductor circuits 221 include the first metal-oxide-semiconductor and the second metal-oxide-semiconductor；First metal-oxide-semiconductor
It is connected with the grid of second metal-oxide-semiconductor and is connected to the metal-oxide-semiconductor driving circuit 222；First metal-oxide-semiconductor and described second
The source electrode of metal-oxide-semiconductor is connected；The first metal-oxide-semiconductor drain connects the cathode of the rechargeable battery 240, second metal-oxide-semiconductor
Drain ground connection.That is, including there are two metal-oxide-semiconductor in double metal-oxide-semiconductor circuits 221, grid and the source electrode of two metal-oxide-semiconductors distinguish phase
Even, the total grid and total source electrode of double metal-oxide-semiconductor circuits 221 are formed, and the drain of a metal-oxide-semiconductor in two metal-oxide-semiconductors is grounded,
The cathode of the drain connection rechargeable battery 240 of another metal-oxide-semiconductor, then can control by inputting low and high level signal to total grid
The on-off of two metal-oxide-semiconductors, namely the on-off of double metal-oxide-semiconductor circuits 221 is controlled, to control whether rechargeable battery 240 is grounded shape
At charge circuit.Wherein, it is also provided with resistance 31 and resistance 32 between the grid and source electrode of above-mentioned metal-oxide-semiconductor, to add
The connection and cutting of fast metal-oxide-semiconductor, play the purpose for accelerating charge circuit switch.
In the embodiment of the present invention, above-mentioned first metal-oxide-semiconductor and second metal-oxide-semiconductor are NMOS tube.As shown in figure 4, being one
NMOS tube structural schematic diagram.
Described 222 one end of metal-oxide-semiconductor driving circuit connects the control circuit 210 and driving voltage input terminal 33, another
End connects double metal-oxide-semiconductor circuits 221, for when receiving the low level that the control circuit 210 is sent that driving voltage is defeated
Enter the voltage transmission at end 33 to double metal-oxide-semiconductor circuits 221, double metal-oxide-semiconductor circuits are connected and form charge circuit.
In the embodiment of the present invention, its voltage value of driving voltage input terminal 33 is solid between 20V, can choose one in 3V
Determine the fixed voltage value of power supply output, for example, 15V.The metal-oxide-semiconductor driving circuit 222 includes triode 34；The triode 34
Emitter connect the driving voltage input terminal 33；The base stage of the triode 34 connects the control circuit 210, is used for
The triode is connected after receiving the low level that the control circuit is sent；The collector connection of the triode 34 is described double
Metal-oxide-semiconductor circuit 221, for after the triode ON by the voltage transmission of the driving voltage input terminal 33 to described double
Metal-oxide-semiconductor circuit 221.Namely it is carried out in the metal-oxide-semiconductor driving circuit 222 using voltage of the triode 34 to driving voltage input terminal 33
Control, when the base stage of triode 34 receives the low level that control circuit 210 is sent, which is connected to, and driving voltage is defeated
The voltage for entering end 33 is transmitted to collector via the emitter of triode, double metal-oxide-semiconductor circuits 221 is then transmit to, to drive
Double metal-oxide-semiconductor circuits 221, are connected to charge circuit.Wherein, base is additionally provided between driving voltage input terminal 33 and triode 34
Pole pull-up resistor 35 prevents triode 34 to be damaged by static electricity for reinforcing the control reliability of triode 34.The base of triode 34
It is also equipped with resistance 36 between pole and control circuit 210, plays the role of current limiting pressure-limiting.And metal-oxide-semiconductor driving circuit 222 and double
Resistance 37 is also equipped between metal-oxide-semiconductor circuit 221, the double metal-oxide-semiconductor circuits of the voltage starting for receiving driving voltage input terminal 34
221 total grid.Wherein, above-mentioned triode 34 is PNP type triode.
In the embodiment of the present invention, which includes photo-coupler 231；The first of the photo-coupler 231 is drawn
Foot connects the cathode of the rechargeable battery 240；The second pin of the photo-coupler 231 connects the rechargeable battery 240
Anode；The third pin of the photo-coupler 231 connects the source electrode of double metal-oxide-semiconductor circuits 221；The photo-coupler 231
The 4th pin connect the grids of double metal-oxide-semiconductor circuits 221.Wherein, the first pin of the photo-coupler 231 and chargeable electricity
It is provided with resistance 38 between the cathode in pond 240, is used for current limiting pressure-limiting, protects photo-coupler 231.Namely in rechargeable battery 240
Positive and negative anodes it is reversed when, the photodiode work in photo-coupler 231, and in photo-coupler 231 emitter of triode and
Collector connection, i.e., third pin is connected to the 4th pin, and the grid and source electrode of the double metal-oxide-semiconductor circuits 221 at this moment connected are clamped
The state of same level is arrived in position, causes double metal-oxide-semiconductor circuits 221 that can not be connected, charge circuit be connected can not, protection battery charging
Component in circuit 200.
Embodiment 3
Fig. 5 is a kind of structural schematic diagram for battery charger that the embodiment of the present invention 3 provides.
The battery charger 300 includes control circuit 310, cell switch circuit 320 and reverse-connection preventing circuit 330；
The control circuit 310 detects the voltage of the rechargeable battery 340, and root for connecting rechargeable battery 340
Low and high level, which is generated, according to the voltage of the rechargeable battery 340 is sent to the cell switch circuit 320；
The cell switch circuit 320 connects the control circuit 310, for receiving the transmission of control circuit 210
The charge circuit of the rechargeable battery 340 is connected to when low level, when receiving the high level that the control circuit 210 is sent
Make the charge circuit for disconnecting the rechargeable battery 340；
The reverse-connection preventing circuit 330 connects the cell switch circuit 320 and for connecting rechargeable battery 340, is examining
When measuring the 340 positive and negative reversal connection of rechargeable battery, controls the cell switch circuit 320 and disconnect the rechargeable battery 340
Charge circuit.
The battery charger 300 further includes AC-DC charging circuit 350, and the AC-DC charging circuit 350 is for connecting
The anode of the rechargeable battery 340 provides DC charging power supply for the rechargeable battery 340.
The battery charger 300 further includes battery discharging circuit 360, and described 360 one end of battery discharging circuit is for connecting
The rechargeable battery 340 is connect, the other end connects the control circuit 310, in the electric discharge for receiving the transmission of control circuit 310
The discharge loop of the rechargeable battery 340 is connected after instruction.The present invention also provides a kind of charger, which includes above-mentioned
Battery charger.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of battery charger, which is characterized in that including control circuit, cell switch circuit and reverse-connection preventing circuit；
The control circuit is used to detect the voltage of rechargeable battery, and generates height electricity according to the voltage of the rechargeable battery
It is flat to be sent to the cell switch circuit；
Control circuit described in the cell switch circuit connection, for the company when receiving the low level that the control circuit is sent
The charge circuit for leading to the rechargeable battery disconnects the chargeable electricity when receiving the high level that the control circuit is sent
The charge circuit in pond；
The reverse-connection preventing circuit connects the cell switch circuit and for connecting the rechargeable battery, detect it is described can
When the positive and negative reversal connection of rechargeable battery, the charge circuit that the cell switch circuit disconnects the rechargeable battery is controlled.
2. battery charger according to claim 1, which is characterized in that further include AC-DC charging circuit, the AC-
DC charging circuit is used to connect the anode of the rechargeable battery, provides DC charging power supply for the rechargeable battery.
3. battery charger according to claim 2, which is characterized in that the cell switch circuit includes double metal-oxide-semiconductors
Circuit and metal-oxide-semiconductor driving circuit；
Double metal-oxide-semiconductor circuit grounds and the cathode for connecting the rechargeable battery, with the AC-DC charging circuit with
And the rechargeable battery formed can on-off charge circuit；
Metal-oxide-semiconductor driving circuit one end connects the control circuit and driving voltage input terminal, and other end connection is described double
Metal-oxide-semiconductor circuit, for driving voltage to be transmitted to double metal-oxide-semiconductor electricity when receiving the low level that the control circuit is sent
Road is connected double metal-oxide-semiconductor circuits and forms charge circuit.
4. battery charger according to claim 3, which is characterized in that double metal-oxide-semiconductor circuits include the first metal-oxide-semiconductor and
Second metal-oxide-semiconductor；
First metal-oxide-semiconductor is connected with the grid of second metal-oxide-semiconductor and is connected to the metal-oxide-semiconductor driving circuit；
First metal-oxide-semiconductor is connected with the source electrode of second metal-oxide-semiconductor；
The drain of first metal-oxide-semiconductor is used to connect the cathode of the rechargeable battery, the drain ground connection of second metal-oxide-semiconductor.
5. battery charger according to claim 4, which is characterized in that first metal-oxide-semiconductor and second metal-oxide-semiconductor
For NMOS tube.
6. battery charger according to claim 3, which is characterized in that the metal-oxide-semiconductor driving circuit includes triode；
The emitter of the triode connects the driving voltage input terminal；
The base stage of the triode connects the control circuit, for leading after receiving the low level that the control circuit is sent
Lead to the triode；
The collector of the triode connects double metal-oxide-semiconductor circuits, for after the triode ON that the driving is electric
Pressure is transmitted to double metal-oxide-semiconductor circuits.
7. battery charger according to claim 3, which is characterized in that the reverse-connection preventing circuit includes photo-coupler；
First pin of the photo-coupler is used to connect the cathode of the rechargeable battery；
The second pin of the photo-coupler is used to connect the anode of the rechargeable battery；
The third pin of the photo-coupler connects the source electrode of double metal-oxide-semiconductor circuits；
4th pin of the photo-coupler connects the grid of double metal-oxide-semiconductor circuits.
8. battery charger according to claim 7, which is characterized in that the photo-coupler is photodiode type light
Coupler, photosensitive crystal-type photo-coupler, photo resistance type photo-coupler or light-operated brilliant lock type photo-coupler.
9. battery charger according to claim 1, which is characterized in that further include battery discharging circuit；
Described battery discharging circuit one end connects the control circuit for connecting the rechargeable battery, the other end, is used for
Receive the discharge loop that the rechargeable battery is connected after the electric discharge that control circuit is sent instructs.
10. a kind of charger, which is characterized in that including the described in any item battery chargers of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910378090.0A CN110011386A (en) | 2019-05-08 | 2019-05-08 | Battery charger and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910378090.0A CN110011386A (en) | 2019-05-08 | 2019-05-08 | Battery charger and charger |
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| Publication Number | Publication Date |
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| CN110011386A true CN110011386A (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910378090.0A Pending CN110011386A (en) | 2019-05-08 | 2019-05-08 | Battery charger and charger |
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| CN (1) | CN110011386A (en) |
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