CN220156229U - Power supply system port circuit and power supply system - Google Patents
Power supply system port circuit and power supply system Download PDFInfo
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- CN220156229U CN220156229U CN202320041503.8U CN202320041503U CN220156229U CN 220156229 U CN220156229 U CN 220156229U CN 202320041503 U CN202320041503 U CN 202320041503U CN 220156229 U CN220156229 U CN 220156229U
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 10
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- 238000010586 diagram Methods 0.000 description 12
- 230000015556 catabolic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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Abstract
The utility model provides a power supply system port circuit and a power supply system, wherein the power supply system port circuit comprises a port circuit input end, a port circuit output end, a first filter inductor, a unidirectional conduction element and a first filter capacitor; the input end of the port circuit, the first filter inductor and the output end of the port circuit are sequentially connected in series to form a main power supply loop; the first filter capacitor is connected with the output end of the port circuit in parallel to form a pre-power supply circuit; the unidirectional conduction element is connected with the first filter inductor in parallel to form a high-voltage release loop, and the unidirectional conduction element is used for stabilizing high voltage generated by resonance between voltage spikes at the input end of the port circuit and the first filter inductor. According to the utility model, the unidirectional conducting elements are arranged at the two ends of the first filter inductor in parallel, so that the influence on the safety of a subsequent connection circuit or equipment caused by the output of the high voltage generated by the resonance of the voltage peak in the input voltage of the input end of the port circuit and the first filter inductor from the output end of the port circuit is avoided.
Description
Technical Field
The utility model relates to the field of power supply safety, in particular to a power supply system port circuit and a power supply system.
Background
Private power sources when input is facing a customer battery source, the customer battery source exists as: 1200V, 2us voltage spike. LC filters are typically provided on the input side of the private power supply, and when there is a voltage spike in the customer's battery source, the voltage spike and LC filter resonance can produce a greater voltage, resulting in damage to the consumer product accessing the private power supply.
Disclosure of Invention
The embodiment of the utility model provides a power supply system port circuit and a power supply system, which are used for solving the problem that electric equipment is easy to damage due to voltage spikes on a power supply side.
In a first aspect, an embodiment of the present utility model provides a power supply system port circuit, including a port circuit input end, a port circuit output end, a first filter inductance, a unidirectional conduction element, and a first filter capacitance;
the port circuit input end, the first filter inductor and the port circuit output end are sequentially connected in series to form a main power supply loop;
the first filter capacitor is connected with the output end of the port circuit in parallel to form a pre-power supply circuit;
the unidirectional conduction element is connected with the first filter inductor in parallel to form a high-voltage release loop, and the high-voltage release loop is used for stabilizing high voltage generated by voltage spikes at the input end of the port circuit and resonance of the first filter inductor.
In one possible implementation, the unidirectional conductive element is a diode; the positive pole of the diode is connected with the output end of the first filter inductor, and the negative pole of the diode is connected with the input end of the first filter inductor.
In one possible implementation, the diode is a transient diode or a zener diode.
In one possible implementation, the method further includes: and the current limiting resistor is connected with the output end of the unidirectional conduction element in series.
In one possible implementation, the method further includes: and the freewheeling diode is connected in parallel with the first filter capacitor and is used for stabilizing the load at the output end of the port circuit and the voltage peak generated by the lead.
In a second aspect, an embodiment of the present utility model provides a power supply system, including: an external power supply device and a user power supply device; the user power supply device comprises the power supply system port circuit of the first aspect and any implementation manner of the first aspect;
the external power supply equipment is connected with the input end of the port circuit;
and the user electric equipment is connected with the output end of the port circuit.
In one possible implementation, the turn-on voltage of the unidirectional conducting element is less than or equal to an input safety voltage threshold of the consumer.
In a third aspect, an embodiment of the present utility model provides a power supply system, where the power supply system includes a power supply system port circuit, an external power supply device, and a user power supply device in any implementation manner of the first aspect;
the external power supply equipment is connected with the input end of the port circuit; and the user power supply equipment is connected with the output end of the port circuit.
In a possible implementation, the input of the user power device comprises an LC filter consisting of a second filter inductance and a second filter capacitance.
In one possible implementation manner, the unidirectional conducting element is selected according to an input safety voltage threshold value of the accessed user power supply device;
the one-way conducting element has a conducting voltage less than or equal to an input safety voltage threshold of the user power supply device.
The embodiment of the utility model provides a power supply system port circuit and a power supply system, wherein the power supply system port circuit comprises a port circuit input end, a port circuit output end, a first filter inductor, a unidirectional conduction element and a first filter capacitor, wherein the port circuit input end, the first filter inductor and the port circuit output end are sequentially connected in series to form a main power supply loop, the first filter capacitor and the port circuit output end are connected in parallel to form a pre-power supply circuit, the unidirectional conduction element and the first filter inductor are connected in parallel to form a high-voltage release loop, and the unidirectional conduction element is used for stabilizing high voltage generated by voltage peak of the port circuit input end and resonance of the first filter inductor. According to the utility model, the unidirectional conducting elements are arranged at the two ends of the first filter inductor in parallel, so that the influence on the safety of a subsequent connection circuit or equipment caused by the output of the high voltage generated by the resonance of the voltage peak in the input voltage of the input end of the port circuit and the first filter inductor from the output end of the port circuit is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a power supply system port circuit according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a power supply system port circuit according to another embodiment of the present utility model;
FIG. 3 is a schematic diagram of a power supply system port circuit according to another embodiment of the present utility model;
FIG. 4 is a schematic diagram of a power supply system according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a power supply system according to another embodiment of the present utility model;
fig. 6 is a schematic structural diagram of a power supply system according to another embodiment of the present utility model.
Detailed Description
In order to make the present solution better understood by those skilled in the art, the technical solution in the present solution embodiment will be clearly described below with reference to the accompanying drawings in the present solution embodiment, and it is obvious that the described embodiment is an embodiment of a part of the present solution, but not all embodiments. All other embodiments, based on the embodiments in this solution, which a person of ordinary skill in the art would obtain without inventive faculty, shall fall within the scope of protection of this solution.
The term "comprising" in the description of the present solution and the claims and in the above-mentioned figures, as well as any other variants, means "including but not limited to", intended to cover a non-exclusive inclusion, and not limited to only the examples listed herein. Furthermore, the terms "first" and "second," etc. are used for distinguishing between different objects and not for describing a particular sequential order.
The implementation of the utility model is described in detail below with reference to the specific drawings:
fig. 1 is a schematic diagram of a power supply system port circuit according to an embodiment of the present utility model. Referring to fig. 1, the power supply system port circuit includes: the port circuit input end Vin, the port circuit output end Vout, the first filter inductance L1, the unidirectional conduction element D1 and the first filter capacitance C1.
The port circuit input end Vin, the first filter inductor L1 and the port circuit output end Vout are sequentially connected in series to form a main power supply loop.
The first filter capacitor C1 is connected with the output end Vout of the port circuit in parallel to form a pre-power supply circuit.
The unidirectional conduction element D1 and the first filter inductor L1 are connected in parallel to form a high-voltage release loop, and the high-voltage release loop is used for stabilizing high voltage generated by resonance between a voltage peak at the input end Vin of the port circuit and the first filter inductor L1.
In fig. 1, the unidirectional conductive element D1 is shown as a diode, and optionally, the unidirectional conductive element D1 is another type of unidirectional conductive element D1 or an integrated element.
In this embodiment, the unidirectional conducting element D1 is arranged in parallel at two ends of the first filter inductor L1, so that the high voltage generated by the resonance between the voltage spike in the input voltage of the input end Vin of the port circuit and the first filter inductor L1 is prevented from being output from the output end Vout of the port circuit, and the safety of the subsequent connection circuit or device is prevented from being affected.
In one possible implementation, the unidirectional conductive element D1 is a diode; the positive pole of the diode is connected with the output end of the first filter inductor L1, and the negative pole of the diode is connected with the input end of the first filter inductor L1.
In one possible implementation, the diode is a transient diode.
In one possible implementation, the diode is a zener diode. The voltage stabilizing tube plays a role in stabilizing voltage, cannot be damaged in a reverse breakdown area, and stability and safety of a power supply system port circuit are improved.
Fig. 2 is a schematic structural diagram of a power supply system port circuit according to another embodiment of the present utility model. Referring to fig. 2, the power supply system port circuit further includes: the current limiting resistor is connected with the output end of the unidirectional conduction element D1 in series.
In this embodiment, the current limiting resistor is used to protect the unidirectional conducting element D1 from reverse breakdown. In addition, when the high voltage generated by resonance of the voltage peak and the first filter inductor L1 in the input voltage of the input end Vin of the port circuit flows through the current-limiting resistor, the voltage reduction function is realized.
Fig. 3 is a schematic structural diagram of a power supply system port circuit according to another embodiment of the present utility model. Referring to fig. 3, the power supply system port circuit further includes: and the freewheeling diode D2 is connected in parallel with the first filter capacitor C1 and is used for stabilizing the load of the output end Vout of the port circuit and voltage spikes generated by the lead.
In this embodiment, the freewheeling diode D2 is added to the output terminal Vout of the port circuit, so as to ensure the system safety in the discharge cut-off stage.
Fig. 4 is a schematic structural diagram of a power supply system according to an embodiment of the present utility model. Referring to fig. 4, a power supply system includes: an external power supply device and a user power supply device. The consumer power device includes the power supply system port circuitry shown in fig. 1.
The external power supply equipment is connected with the input end Vin of the port circuit; the consumer electric equipment is connected with the output end Vout of the port circuit.
In this embodiment, the power supply system port circuit provided in the foregoing embodiment is built in the user power supply device, so as to improve the integration level of the power supply system, avoid the influence of external unstable factors on the power supply system port circuit, and effectively avoid the influence of voltage spikes at the output end of the external power supply device on the safety of the user power supply device.
In other possible implementations, the user power device includes the power supply system port circuit shown in fig. 2 or 3.
In one possible implementation, the turn-on voltage of unidirectional conduction element D1 is less than or equal to the input safety voltage threshold of the consumer.
In this embodiment, the load connected to the user power supply device is usually fixed or known, and the power supply system port circuit in the user power supply device is customized based on the specific application specification, so as to improve the applicability of the power supply system port circuit and the safety of the user power supply device.
Fig. 5 is a schematic structural diagram of a power supply system according to an embodiment of the present utility model. Referring to fig. 5, the power supply system includes the power supply system port circuit shown in fig. 1, an external power supply device, and a user power supply device.
The external power supply equipment is connected with the input end Vin of the port circuit; the user power supply device is connected with the output end Vout of the port circuit.
In this embodiment, the power supply system port circuit is set independently of the user power supply device and the external power supply device, and the unidirectional conductive element D1 can be adaptively adjusted according to a specific application scenario, so that the influence of voltage spikes at the output end of the external power supply device on the safety of the user power supply device is effectively avoided.
Fig. 6 is a schematic structural diagram of a power supply system according to an embodiment of the present utility model. Referring to fig. 6, the input terminal of the user power device includes an LC filter composed of a second filter inductance L2 and a second filter capacitance C2.
In this embodiment, the LC filter is conventionally set by the user power device according to the security requirement, so as to ensure the security of the device and the subsequent connection load.
In a possible implementation, on the basis of fig. 6, the input terminal of the user power supply device further comprises a unidirectional conducting element D1 connected in parallel with the second filter inductance L2.
In one possible implementation manner, the unidirectional conducting element D1 is selected according to an input safety voltage threshold value of the accessed user power supply equipment; the on voltage of the unidirectional conducting element D1 is smaller than or equal to the input safety voltage threshold of the user power supply equipment.
In this embodiment, the turn-on voltage of the unidirectional conduction element D1 is less than or equal to the input safety voltage threshold of the user power supply device, so as to ensure that when the voltage at the inlet side of the user power supply device reaches the turn-on voltage of the unidirectional conduction element D1, the influence of the transmission to the user power supply device on the safety of the user power supply device is effectively avoided.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The port circuit of the power supply system is characterized by comprising a port circuit input end, a port circuit output end, a first filter inductor, a unidirectional conduction element and a first filter capacitor;
the port circuit input end, the first filter inductor and the port circuit output end are sequentially connected in series to form a main power supply loop;
the first filter capacitor is connected with the output end of the port circuit in parallel to form a pre-power supply circuit;
the unidirectional conduction element is connected with the first filter inductor in parallel to form a high-voltage release loop, and the high-voltage release loop is used for stabilizing high voltage generated by resonance between the voltage peak of the input end of the port circuit and the first filter inductor;
the output end of the port circuit is connected with user electric equipment;
the conduction voltage of the unidirectional conduction element is smaller than or equal to the input safety voltage threshold value of the user electric equipment.
2. The power supply system port circuit of claim 1, wherein the unidirectional conductive element is a diode; the positive pole of the diode is connected with the output end of the first filter inductor, and the negative pole of the diode is connected with the input end of the first filter inductor.
3. The power supply system port circuit of claim 2, wherein the diode is a transient diode or a zener diode.
4. A power supply system port circuit according to any one of claims 1 to 3, further comprising: and the current limiting resistor is connected with the output end of the unidirectional conduction element in series.
5. The power supply system port circuit of claim 4, further comprising: and the freewheeling diode is connected in parallel with the first filter capacitor and is used for stabilizing the load at the output end of the port circuit and the voltage peak generated by the lead.
6. A power supply system, characterized in that the power supply system comprises: an external power supply device and a user power supply device; the consumer power device comprising the power supply system port circuit of any one of claims 1 to 5;
the external power supply equipment is connected with the input end of the port circuit;
and the user electric equipment is connected with the output end of the port circuit.
7. The power supply system of claim 6, wherein the turn-on voltage of the unidirectional conductive element is less than or equal to an input safe voltage threshold of the consumer.
8. A power supply system comprising the power supply system port circuit of any one of claims 1 to 5, an external power supply device, and a user power supply device;
the external power supply equipment is connected with the input end of the port circuit; and the user power supply equipment is connected with the output end of the port circuit.
9. The power supply system of claim 8, wherein the input of the consumer power device comprises an LC filter comprising a second filter inductance and a second filter capacitance.
10. The power supply system of claim 8, wherein the unidirectional conductive element is selected based on an input safety voltage threshold of an accessed user power device;
the one-way conducting element has a conducting voltage less than or equal to an input safety voltage threshold of the user power supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320041503.8U CN220156229U (en) | 2023-01-06 | 2023-01-06 | Power supply system port circuit and power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320041503.8U CN220156229U (en) | 2023-01-06 | 2023-01-06 | Power supply system port circuit and power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220156229U true CN220156229U (en) | 2023-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320041503.8U Active CN220156229U (en) | 2023-01-06 | 2023-01-06 | Power supply system port circuit and power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220156229U (en) |
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2023
- 2023-01-06 CN CN202320041503.8U patent/CN220156229U/en active Active
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