CN217882927U - Charger and reverse connection prevention protection circuit thereof - Google Patents
Charger and reverse connection prevention protection circuit thereof Download PDFInfo
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- CN217882927U CN217882927U CN202222022819.0U CN202222022819U CN217882927U CN 217882927 U CN217882927 U CN 217882927U CN 202222022819 U CN202222022819 U CN 202222022819U CN 217882927 U CN217882927 U CN 217882927U
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses a charger and prevent reverse connection protection circuit thereof. The charger reverse connection prevention protection circuit comprises a voltage conversion circuit, a first switch, a first resistor, a first input pole, a second input pole, a first output pole, a second output pole and a controller; the voltage conversion circuit comprises a first input end, a second input end, a first output end and a second output end; the first input pole is electrically connected with the first input end, and the second input pole is electrically connected with the second input end; the first switch and the first resistor are connected in series between the first output end and the first output electrode; the second output electrode is electrically connected with the second output end; the controller comprises a first acquisition end, a second acquisition end and a first control signal output end; the first control signal output end is electrically connected with the control end of the first switch. By adopting the technical scheme, the battery or the electric load can be protected during reverse connection, and the reverse connection prevention protection circuit of the charger is also protected from being damaged.
Description
Technical Field
The utility model relates to a power technical field that charges especially relates to a charger and prevent reverse connection protection circuit thereof.
Background
The power supply has a positive pole and a negative pole, the battery also has a positive pole and a negative pole, and in practical use, the positive pole and the negative pole are connected reversely, so that the battery and the charger can be damaged once the positive pole and the negative pole of the battery are connected reversely.
At present, in order to prevent the reverse connection of the battery from damaging the battery, a common method is to connect a diode or a fuse in series, but the diode in series can only be used in a place with small current, and the replacement of the fuse and the installation of the fuse are complicated, and the methods can not protect the charger.
SUMMERY OF THE UTILITY MODEL
The utility model provides a charger and prevent reverse connection protection circuit thereof to solve the charger and can not prevent the problem of reverse connection protection battery and charger simultaneously.
According to the utility model discloses an aspect provides a charger prevents reverse connection protection circuit, include: the voltage conversion circuit, the first switch, the first resistor, the first input pole, the second input pole, the first output pole, the second output pole and the controller;
the voltage conversion circuit comprises a first input end, a second input end, a first output end and a second output end; the first input pole is electrically connected with the first input end, and the second input pole is electrically connected with the second input end; the first switch and the first resistor are connected in series between the first output end and the first output pole; the second output electrode is electrically connected with the second output end;
the controller comprises a first acquisition end, a second acquisition end and a first control signal output end; the first acquisition end is electrically connected with the first output electrode; the second acquisition end is electrically connected with the second output electrode; the first control signal output end is electrically connected with the control end of the first switch.
Optionally, the voltage conversion circuit includes a transformer;
the transformer comprises a primary coil and a secondary coil; the first end of the primary coil is the first input end, and the second end of the primary coil is the second input end; the first end of the secondary coil is the first output end, and the second end of the secondary coil is the second output end.
Optionally, the first switch includes a first transistor and a first voltage dividing resistor;
the first control signal output end is electrically connected with a grid electrode of the first transistor through the first voltage dividing resistor;
a first pole of the first transistor is electrically connected with a first output pole; the second pole of the first transistor is electrically connected to the first output terminal.
Optionally, the controller includes a single chip microcomputer.
Optionally, the method further includes: a second switch;
the second switch is connected in parallel with the first resistor;
the controller further comprises a second control signal output end; and the second control signal output end is electrically connected with the control end of the second switch.
Optionally, the second switch includes a second transistor and a second voltage dividing resistor;
the second control signal output end is electrically connected with the grid electrode of the second transistor through the second voltage-dividing resistor;
a first pole of the second transistor is electrically connected with the first output pole; a second pole of the second transistor is electrically connected to the first output terminal.
Optionally, the method further includes: a charge and discharge circuit;
the charging and discharging circuit comprises a first charging end, a second charging end, a first discharging end and a second discharging end, wherein the first charging end is electrically connected with the first output end, the second charging end is connected with the second output end, the first discharging end is electrically connected with the first output end, and the second discharging end is electrically connected with the second output end.
Optionally, the charge and discharge circuit includes a first capacitor;
a first electrode plate of the first capacitor is electrically connected with the first output end and the first output end respectively; the second electrode plate of the first capacitor is electrically connected with the second output end and the second output end respectively.
Optionally, the method further includes: a second resistor;
the second resistor is connected in series with the first switch and the first resistor between the first output terminal and the first output pole.
According to another aspect of the present invention, there is provided a charger, including the above-mentioned charger reverse connection prevention protection circuit.
According to the technical scheme of the embodiment of the utility model, the charger prevents reverse connection protection circuit that the embodiment of the utility model provides, the controller can gather the electric signal of first output pole and second output pole through first collection end and second collection end to confirm the connection condition between first output pole and the second output pole; the controller can control the on/off of the first switch according to different connection conditions so as to protect the charger reverse connection prevention protection circuit and a battery or an electric load connected with the first output electrode and the second output electrode; the first resistor can also share stress voltage of two ends of the first switch, limit current flowing through the first switch and protect the first switch from being damaged.
It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an anti-reverse connection protection circuit for a charger according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a reverse connection protection circuit for a charger according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a reverse connection protection circuit for a charger according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another reverse connection protection circuit for a charger according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a charger according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a reverse connection prevention protection circuit for a charger according to an embodiment of the present invention, referring to fig. 1, the reverse connection prevention protection circuit for a charger includes a voltage conversion circuit 110, a first switch 50, a first resistor R1, a first input electrode 10, a second input electrode 20, a first output electrode 30, a second output electrode 40, and a controller 120. The voltage conversion circuit 110 includes a first input terminal 1, a second input terminal 2, a first output terminal 3 and a second output terminal 4; the first input pole 10 is electrically connected with the first input end 1, and the second input pole 20 is electrically connected with the second input end 2; the first switch 50 and the first resistor R1 are connected in series between the first output terminal 3 and the first output electrode 30; the second output pole 40 is electrically connected to the second output terminal 4. The controller 120 comprises a first acquisition end 13, a second acquisition end 14 and a first control signal output end 21; the first acquisition end 13 is electrically connected with the first output electrode 30; the second acquisition end 13 is electrically connected with the second output electrode 40; the first control signal output terminal 21 is electrically connected to the control terminal 53 of the first switch 50.
The first input electrode 10 and the second input electrode 20 can be electrically connected to an external power source, the first input electrode 10 can be connected to a positive electrode or a negative electrode of the external power source, and the second input electrode 20 can be connected to a negative electrode or a positive electrode of the external power source. The first output electrode 30 and the second output electrode 40 can be electrically connected to a battery or an electric load, the first output electrode 30 can be connected to the positive electrode or the negative electrode of the battery or the electric load, and the second input electrode 20 can be connected to the negative electrode or the positive electrode of the battery or the electric load. For convenience of understanding and description, the embodiment of the present invention is described by taking as an example that the first input electrode 10 is electrically connected to the negative electrode of the external power source, the second input electrode 20 is electrically connected to the positive electrode of the external power source, the first output electrode 30 is electrically connected to the negative electrode of the battery or the electrical load, and the second output electrode 40 is electrically connected to the positive electrode of the battery or the electrical load.
For example, the voltage conversion circuit 110 may convert the electrical signals of the first input terminal 1 and the second input terminal 2 into electrical signals of a higher potential or a lower potential of the first output terminal 3 and the second output terminal 4, so that the electrical signals of the first input electrode 10 and the second input electrode 20 may be converted into electrical signals of a higher potential or a lower potential and output to the first output electrode 30 and the second output electrode 40. The first collecting terminal 13 can collect electrical signal information of the first output electrode 30, the second collecting terminal 14 can collect electrical signal information of the second output electrode 40, and the controller 120 can determine a connection condition of the first output electrode 30 and the second output electrode 40, for example, a normal connection condition, a short circuit condition, a no-load condition, a reverse connection condition, and the like, according to the electrical signal information collected by the first collecting terminal 13 and the electrical signal information collected by the second collecting terminal 14. When the first output electrode 30 and the second output electrode 40 are normally connected, the controller 120 may output a first control signal to the control terminal 53 of the first switch 50 through the first control signal output terminal 21, so that the first terminal 51 and the second terminal 52 of the first switch 50 are turned on, so that the electrical signals of the first input electrode 10 and the second input electrode 20 may be successfully output to the first output electrode 30 and the second output electrode 40 through the voltage converting circuit 110, and the external power source may normally supply power to the battery. When the first output electrode 30 and the second output electrode 40 are short-circuited, the controller 120 may output a first control signal to the control terminal 53 of the first switch 50 through the first control signal output terminal 21, so that the first terminal 51 and the second terminal 52 of the first switch 50 are turned off, and the charger anti-reverse connection protection circuit is protected from being damaged. When the first output pole 30 and the second output pole 40 are idle, the controller 120 can still control the first terminal 51 and the second terminal 52 of the first switch 50 to be conducted. When the first output pole 30 and the second output pole 40 are reversely connected, the controller 120 controls the first terminal 51 and the second terminal 52 of the first switch 50 to be turned off; when the first terminal 51 and the second terminal 52 of the first switch 50 are turned off, the first resistor R1 may divide a portion of a stress voltage borne by the first terminal 51 and the second terminal 52 of the first switch 50, which is a sum of a voltage difference from the first input electrode 10 and the second input electrode 20 and a voltage difference of the reversely connected first output electrode 30 and the second output electrode 40, and limit a current flowing through the first switch 50, thereby protecting the first switch 50 from being damaged.
Optionally, the controller 120 includes, but is not limited to, a single chip, a microprocessor, a microcontroller, and the like. It is understood that the first control signal output terminal 21 of the controller 120 can output electrical signals with different potentials, which are all referred to as the first control signal in the present embodiment.
The embodiment of the utility model provides a charger prevents reverse connection protection circuit, the controller can gather the electric signal of first output pole and second output pole through first collection end and second collection end to confirm the connection condition between first output pole and the second output pole; the controller can control the on/off of the first switch according to different connection conditions so as to protect the charger reverse connection prevention protection circuit and a battery or an electric load connected with the first output electrode and the second output electrode; the first resistor can also share stress voltage of two ends of the first switch, limit current flowing through the first switch and protect the first switch from being damaged.
Optionally, fig. 2 is a schematic structural diagram of another charger reverse connection prevention protection circuit provided in the embodiment of the present invention, and referring to fig. 2, the voltage conversion circuit 110 includes a transformer; the transformer includes a primary coil 111 and a secondary coil 112; the first end of the primary coil 111 is a first input end 1, and the second end of the primary coil 111 is a second input end 2; the first end of the secondary winding 112 is the first output terminal 3 and the second end of the secondary winding 112 is the second output terminal 4.
The primary coil 111 may be directly electrically connected to an external power source, and the secondary coil 112 may be electrically connected to a battery or an electrical load. When the current in the primary coil 11 changes, the magnetic flux in the secondary coil 112 may change, and an induced electromotive force or an induced current is generated, and the relationship between the electric signals of the first and second input terminals 1 and 2 and the electric signals of the first and second output terminals 3 and 4 may be changed by adjusting the parameters of the primary coil 111 and the secondary coil 112.
Optionally, with continued reference to fig. 2, the first switch 50 includes a first transistor Q2 and a first voltage dividing resistor R45; the first control signal output terminal 21 is electrically connected to the gate of the first transistor Q2 through a first voltage dividing resistor R45; a first pole of the first transistor Q2 is electrically connected to the first output pole 30; the second pole of the first transistor Q2 is electrically connected to the first output terminal 3.
For example, taking the first transistor Q2 as an N-type MOS transistor, the gate of the N-type MOS transistor is electrically connected to the first control signal output terminal 21 through the first voltage dividing resistor R45, the drain of the N-type MOS transistor is electrically connected to the first output electrode 30, and the source of the N-type MOS transistor is electrically connected to the first output terminal 3 through the first resistor R1. When the first control signal output terminal 21 outputs an electrical signal of a high level, the first pole and the second pole of the first transistor Q2 are turned on; when the first control signal output terminal 21 outputs the electric signal of the low level, the first and second poles of the first transistor Q2 are turned off. The first voltage dividing resistor R45 may function to divide voltage and slow down the decrease of the gate potential of the first transistor Q2, protecting the first transistor Q2.
Optionally, fig. 3 is a schematic structural diagram of another reverse connection protection circuit for a charger according to an embodiment of the present invention, referring to fig. 3, the reverse connection protection circuit for a charger further includes a second switch 60, and the second switch 60 is connected in parallel with the first resistor R1. The controller 120 further comprises a second control signal output terminal 22, the second control signal output terminal 22 being electrically connected to the control terminal 63 of the second switch 60.
For example, when the controller 120 determines that the first output electrode 30 and the second output electrode 40 are normally connected, the first control signal output terminal 21 may output a first control signal to the control terminal 53 of the first switch 50, and the second control signal output terminal 22 may output a second control signal to the control terminal 63 of the second switch 60, so that both the first switch 50 and the second switch 60 are turned on, so that the electrical signals of the first input electrode 10 and the second input electrode 20 may be successfully output to the first output electrode 30 and the second output electrode 40 through the voltage conversion circuit 110, the external power source may normally supply power to the battery, and meanwhile, the first resistor R1 is bypassed, which may reduce the loss of the charger anti-reverse connection protection circuit. When the first output pole 30 and the second output pole 40 are short-circuited, the controller 120 may control both the first switch 50 and the second switch 60 to be turned off, so as to protect the charger anti-reverse connection protection circuit and the battery or the power load from being damaged. The controller 120 may control the first switch 50 to be turned on and the second switch 60 to be turned off when there is no load between the first output electrode 30 and the second output electrode 40, and may control the first switch 50 to be turned off if a reverse connection between the first output electrode 30 and the second output electrode 40 is detected in this state. Due to the delay of a certain time from the detection of the reverse connection between the first output pole 30 and the second output pole 40 to the turning-off of the first switch 50, the first resistor R1 can play a role in limiting the current before the turning-off of the first switch 50, thereby protecting the first switch 50 from being damaged and playing a role in protecting the charger reverse connection prevention protection circuit. It is understood that the second control signal output terminal 22 of the controller 120 can output electrical signals with different potentials, which can be referred to as the second control signal in this embodiment.
Optionally, with continued reference to fig. 3, the second switch 60 includes a second transistor Q1 and a second voltage-dividing resistor R3; the second control signal output terminal 22 is electrically connected to the gate of the second transistor Q1 through a second voltage-dividing resistor R3; the first electrode of the second transistor Q1 is electrically connected to the first output electrode 30; the second pole of the second transistor Q1 is electrically connected to the first output terminal 3.
Illustratively, taking the second transistor Q1 as an N-type MOS transistor as an example, a gate of the N-type MOS transistor is electrically connected to the second control signal output terminal 22 through a second voltage-dividing resistor R3, a drain of the N-type MOS transistor is electrically connected to the first output electrode 30 through the first switch 50, and a source of the N-type MOS transistor is electrically connected to the first output terminal 3; the drain and source of the second transistor Q1 are connected across the first resistor R1. When the second control signal output terminal 22 outputs an electrical signal of a high level, the first pole and the second pole of the second transistor Q1 are turned on; when the second control signal output terminal 22 outputs the low-level electric signal, the first and second poles of the second transistor Q1 are turned off. The second voltage-dividing resistor R3 can perform a voltage-dividing function, and slow down the decrease of the gate potential of the second transistor Q1, protecting the second transistor Q1.
Optionally, fig. 4 is a schematic structural diagram of another reverse connection protection circuit for a charger provided in the embodiment of the present invention, referring to fig. 4, the reverse connection protection circuit for a charger further includes a charging and discharging circuit 70, the charging and discharging circuit 70 includes a first charging end 71, a second charging end 72, a first discharging end 73 and a second discharging end 74, the first charging end 71 is electrically connected to the first output end 3, the second charging end 72 is connected to the second output end 4, the first discharging end 73 is electrically connected to the first output electrode 30, and the second discharging end 74 is electrically connected to the second output electrode 40.
Illustratively, the charge and discharge circuit 70 may store the charge output by the voltage conversion circuit 110 during an early stage when the first switch 50 and the second switch 60 are turned on, and the charge and discharge circuit 70 may discharge the stored charge to discharge the charge to the battery or the electric load between the first output electrode 30 and the fourth output electrode 40 during a later stage when the first switch 50 and the second switch 60 are turned on.
Optionally, with continued reference to fig. 4, the charging and discharging circuit 70 includes a first capacitor C1; the first electrode plate of the first capacitor C1 is electrically connected to the first output terminal 3 and the first output electrode 30, respectively; the second electrode plate of the first capacitor C1 is electrically connected to the second output terminal 4 and the second output terminal 40, respectively.
Illustratively, the first capacitor C1 is an electrolytic capacitor, and may be a variable capacitor, for example. The first electrode plate of the first capacitor C1 can be directly electrically connected to the first output terminal 3 and simultaneously directly electrically connected to the first output terminal 30; the second electrode plate of the first capacitor C1 may be directly electrically connected to the second output terminal 4, and simultaneously electrically connected to the second output terminal 40 through the first resistor R1, the second switch 60 and the first switch 50, and the second electrode plate of the first capacitor C1 may be grounded. In the early stage of the first switch 50 and the second switch 60 being turned on, the first capacitor C1 stores no or less charge, the voltage difference between the two ends of the first capacitor C1 is zero or less, the battery or the electrical load connected between the first output electrode 30 and the second output electrode 40 is equivalent to a short circuit, the first output end 3 and the second output end 4 of the voltage conversion circuit 110 charge the first capacitor C1, the voltage difference between the two ends of the first capacitor C1 gradually increases as the charge stored in the first capacitor C1 increases, and the charge in the first capacitor C1 can supply power to the battery or the electrical load between the first output electrode 30 and the fourth output electrode 40.
Optionally, with continued reference to fig. 4, the charger reverse connection prevention protection circuit further includes a second resistor R2, the second resistor R2 is connected in series between the first output terminal 3 and the first output terminal 30 together with the first switch 50 and the first resistor R1, and when the first switch 50 and the second switch 60 are both turned on, the charger reverse connection prevention protection circuit is protected.
Based on same thinking, the embodiment of the utility model provides a still provide a charger, fig. 5 is the utility model provides a structural schematic of charger, refer to fig. 5, the charger includes the utility model discloses the charger that arbitrary embodiment provided prevents reverse-connection protection circuit still includes first power source 01, second power source 02, the first interface 03 and the second interface 04 that charges that charge, wherein, first power source 01 can be connected with first input pole 10 electricity, and second power source 02 is connected with second input pole 20 electricity, and first interface 03 that charges is connected with first output pole 30 electricity, and the second interface 04 that charges can be connected with second output pole 40 electricity.
The embodiment of the utility model provides a charger can play the protection of connecing in reverse to the battery of connection or with the electric load, can also protect charger self not damaged.
The embodiment of the utility model provides a charger includes the utility model discloses the charger that arbitrary embodiment provided prevents reverse-connection protection circuit possesses corresponding functional module and beneficial effect.
It should be understood that various forms of the flows shown above, reordering, adding or deleting steps, may be used. For example, the steps described in the present invention may be executed in parallel, may be executed sequentially, or may be executed in different orders, as long as the desired result of the technical solution of the present invention can be achieved, and the present invention is not limited thereto.
The above detailed description does not limit the scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A charger anti-reverse connection protection circuit, comprising: the voltage conversion circuit, the first switch, the first resistor, the first input pole, the second input pole, the first output pole, the second output pole and the controller;
the voltage conversion circuit comprises a first input end, a second input end, a first output end and a second output end; the first input pole is electrically connected with the first input end, and the second input pole is electrically connected with the second input end; the first switch and the first resistor are connected in series between the first output end and the first output pole; the second output electrode is electrically connected with the second output end;
the controller comprises a first acquisition end, a second acquisition end and a first control signal output end; the first acquisition end is electrically connected with the first output electrode; the second acquisition end is electrically connected with the second output electrode; the first control signal output end is electrically connected with the control end of the first switch.
2. The charger reverse-connection prevention protection circuit according to claim 1, wherein the voltage conversion circuit comprises a transformer;
the transformer comprises a primary coil and a secondary coil; the first end of the primary coil is the first input end, and the second end of the primary coil is the second input end; the first end of the secondary coil is the first output end, and the second end of the secondary coil is the second output end.
3. The charger reverse-connection prevention protection circuit according to claim 1, wherein the first switch comprises a first transistor and a first voltage dividing resistor;
the first control signal output end is electrically connected with a grid electrode of the first transistor through the first voltage dividing resistor;
a first pole of the first transistor is electrically connected with a first output pole; the second pole of the first transistor is electrically connected to the first output terminal.
4. The charger reverse-connection-prevention protection circuit as claimed in claim 1, wherein the controller comprises a single chip microcomputer.
5. The charger anti-reverse connection protection circuit according to claim 1, further comprising: a second switch;
the second switch is connected in parallel with the first resistor;
the controller further comprises a second control signal output end; and the second control signal output end is electrically connected with the control end of the second switch.
6. The charger reverse-connection-prevention protection circuit according to claim 5, wherein the second switch comprises a second transistor and a second voltage-dividing resistor;
the second control signal output end is electrically connected with the grid electrode of the second transistor through the second voltage-dividing resistor;
a first pole of the second transistor is electrically connected with the first output pole; a second pole of the second transistor is electrically connected to the first output terminal.
7. The charger reverse-connection prevention protection circuit according to claim 1, further comprising: a charge and discharge circuit;
the charging and discharging circuit comprises a first charging end, a second charging end, a first discharging end and a second discharging end; the first charging end is electrically connected with the first output end, the second charging end is connected with the second output end, the first discharging end is electrically connected with the first output end, and the second discharging end is electrically connected with the second output end.
8. The charger reverse-connection-prevention protection circuit as claimed in claim 7, wherein the charge and discharge circuit comprises a first capacitor;
a first electrode plate of the first capacitor is electrically connected with the first output end and the first output end respectively; the second electrode plate of the first capacitor is electrically connected with the second output end and the second output electrode respectively.
9. The charger reverse-connection prevention protection circuit according to claim 1, further comprising: a second resistor;
the second resistor is connected in series with the first switch and the first resistor between the first output terminal and the first output electrode.
10. A charger, comprising: the charger reverse-connection prevention protection circuit of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222022819.0U CN217882927U (en) | 2022-08-02 | 2022-08-02 | Charger and reverse connection prevention protection circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222022819.0U CN217882927U (en) | 2022-08-02 | 2022-08-02 | Charger and reverse connection prevention protection circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN217882927U true CN217882927U (en) | 2022-11-22 |
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| CN202222022819.0U Active CN217882927U (en) | 2022-08-02 | 2022-08-02 | Charger and reverse connection prevention protection circuit thereof |
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| CN (1) | CN217882927U (en) |
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- 2022-08-02 CN CN202222022819.0U patent/CN217882927U/en active Active
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