CN217789298U - Power protection circuit, device and vehicle - Google Patents
Power protection circuit, device and vehicle Download PDFInfo
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- CN217789298U CN217789298U CN202220384515.6U CN202220384515U CN217789298U CN 217789298 U CN217789298 U CN 217789298U CN 202220384515 U CN202220384515 U CN 202220384515U CN 217789298 U CN217789298 U CN 217789298U
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Abstract
The application provides a power protection circuit, device and vehicle, the circuit includes: the overcurrent and overvoltage protection circuit comprises an overcurrent and overvoltage protection module and a differential mode filtering module, wherein the first end of the overcurrent and overvoltage protection module is connected with the output end of a power supply, the second end of the overcurrent and overvoltage protection circuit is connected with the input end of the power supply, the first end of the differential mode filtering module is connected with the third end of the overcurrent and overvoltage protection module, the second end of the differential mode filtering module is connected with the fourth end of the overcurrent and overvoltage protection module, the third end of the differential mode filtering module is connected with the input end of a load, and the fourth end of the differential mode filtering module is connected with the output end of the load. When overcurrent and overvoltage occurs, the overcurrent and overvoltage protection module automatically breaks and automatically restores a path to avoid the influence of overcurrent and overvoltage on a rear-stage load, and the differential mode filtering module filters signals in a circuit to improve the electromagnetic compatibility of a power supply network where the power supply protection circuit is located, and has protection and filtering functions and high reliability.
Description
Technical Field
The application relates to the technical field of electronics, especially, relate to a power protection circuit, device and vehicle.
Background
The power supply is used as a power supply device of a terminal to provide voltage and current required by normal operation for a load, and a protection circuit is usually added between the power supply and the load in order to improve power supply safety and reliability.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving, at least in part, one of the technical problems in the related art.
Therefore, a first objective of the present application is to provide a power protection circuit to enhance the diversity of power protection functions and improve the reliability of the circuit.
A second objective of the present application is to provide a power protection device.
A third object of the present application is to propose a vehicle.
To achieve the above object, a first aspect of the present application provides a power protection circuit, including: the overcurrent and overvoltage protection module is used for adjusting the state of a channel according to an input direct current signal and controlling the direct current signal in the power supply protection circuit to be within a preset voltage range; the first end of the differential mode filtering module is connected with the third end of the over-current and over-voltage protection module, the second end of the differential mode filtering module is connected with the fourth end of the over-current and over-voltage protection module, the third end of the differential mode filtering module is connected with the input end of a load, the fourth end of the differential mode filtering module is connected with the output end of the load, and the differential mode filtering module is used for filtering differential mode signals in direct current signals input to the differential mode filtering module.
The application provides a power protection circuit includes: the overcurrent and overvoltage protection module is used for adjusting the state of a channel according to an input direct current signal and controlling the direct current signal in the power supply protection circuit to be within a preset voltage range; the first end of the differential mode filtering module is connected with the third end of the over-current and over-voltage protection module, the second end of the differential mode filtering module is connected with the fourth end of the over-current and over-voltage protection module, the third end of the differential mode filtering module is connected with the input end of the load, the fourth end of the differential mode filtering module is connected with the output end of the load, and the differential mode filtering module is used for filtering out differential mode signals in direct current signals input to the differential mode filtering module. This application is when overflowing excessive pressure through overflowing overvoltage protection module, automatic disconnection and automatic recovery route avoid overflowing the influence of excessive pressure to the back level load, filter through the signal of differential mode filter module in to the circuit to promote the electromagnetic compatibility performance of the power network that power protection circuit located, compromise protection and filtering function, the reliability is high.
In addition, the power protection circuit provided by the first aspect of the present application may further have the following additional technical features:
further, the power protection circuit further includes: the protection circuit comprises an anti-reverse-connection protection module, wherein a first end of the anti-reverse-connection protection module is connected with a third end of the overcurrent and overvoltage protection module, a second end of the anti-reverse-connection protection module is connected with a fourth end of the overcurrent and overvoltage protection module, a third end of the anti-reverse-connection protection module is connected with a first end of the differential mode filtering module, a fourth end of the anti-reverse-connection protection module is connected with a second end of the differential mode filtering module, and the anti-reverse-connection protection module is used for disconnecting a circuit when the power supply protection circuit is reversely connected with an input end of the power supply and an output end of the power supply.
Further, the power protection circuit further includes: the first end of the common mode filter is connected with the third end of the overcurrent and overvoltage protection module, the second end of the common mode filter is connected with the fourth end of the overcurrent and high-voltage protection circuit, the third end of the common mode filter is connected with the first end of the reverse connection prevention protection module, the fourth end of the common mode filter is connected with the second end of the reverse connection prevention protection module, and the common mode filter is used for filtering common mode signals generated by the reverse connection prevention protection module and the differential mode filtering module.
Further, the overcurrent and overvoltage protection module comprises: a first end of the self-recovery fuse is used as a first end of the overcurrent and overvoltage protection module; a first end of the first diode is connected with a second end of the self-recovery fuse, and a second end of the first diode is used as a second end of the overcurrent and overvoltage protection module; the first end of the first capacitor is connected with the second end of the self-recovery fuse, the second end of the first capacitor is connected with the second end of the first diode, the first end of the first capacitor is used as the third end of the overcurrent and overvoltage protection module, and the second end of the first capacitor is used as the fourth end of the overcurrent and overvoltage protection module.
Further, the reverse connection prevention protection module comprises: the first end of the first resistor is used as the first end of the reverse connection prevention protection module and the third end of the reverse connection prevention protection module; a first end of the second resistor is connected with a second end of the first resistor, and the second end of the second resistor is used as a fourth end of the reverse connection prevention protection module; a first end of the second capacitor is connected with a second end of the first resistor, and a second end of the second capacitor is connected with a second end of the second resistor; a first end of the second diode is connected with the second end of the first resistor, and a second end of the second diode is connected with the second end of the second resistor; the grid electrode of the triode is connected with the second end of the first resistor, the drain electrode of the triode is used as the second end of the reverse connection prevention protection module, and the source electrode of the triode is connected with the second end of the second resistor.
Further, the differential-mode filtering module includes: a first end of the magnetic bead is used as a first end of the differential mode filtering module, and a second end of the magnetic bead is used as a third end of the differential mode filtering module; a first end of the third capacitor is connected with the first end of the magnetic bead, and a second end of the third capacitor is used as a second end of the differential mode filter module and a fourth end of the differential mode filter circuit; and a first end of the fourth capacitor is connected with the second end of the magnetic bead, and a second end of the fourth capacitor is connected with the second end of the third capacitor.
Further, the second diode is a zener diode.
Further, the triode is an N-type metal oxide field effect transistor.
To achieve the above object, a second aspect of the present application provides a power protection device, including: a power protection circuit as described in the embodiments of the first aspect of the present application.
The power protection device of this application, when overflowing the excessive pressure through overflowing overvoltage protection module, automatic disconnection and automatic recovery route avoid overflowing the influence of excessive pressure to the back level load, carry out the filtering through the signal of differential mode filter module in to the circuit to promote the electromagnetic compatibility performance of the power network that power protection circuit located, compromise protection and filtering function, the reliability is high.
To achieve the above object, a third aspect of the present application provides a vehicle including a power protection apparatus according to an embodiment of the second aspect of the present application.
The vehicle of this application, when overflowing the excessive pressure through overflowing overvoltage protection module, automatic disconnection and automatic recovery passageway avoid overflowing the influence of excessive pressure to the back level load, carry out the filtering through the signal of differential mode filter module in to the circuit to promote the electromagnetic compatibility performance of the power network that power protection circuit located, compromise protection and filtering function, the reliability is high.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a power protection circuit according to one embodiment of the present application;
FIG. 2 is a schematic diagram of a power protection circuit according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a power protection circuit according to another embodiment of the present application;
fig. 4 is a schematic diagram of an overall structure of a power protection circuit according to another embodiment of the present application;
FIG. 5 is a block diagram of a power protection device according to one embodiment of the present application;
FIG. 6 is a block diagram of a vehicle according to one embodiment of the present application.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The following describes a power protection circuit, a device, and a vehicle according to an embodiment of the present application with reference to the drawings.
Fig. 1 is a schematic diagram of a power protection circuit according to an embodiment of the present application.
As shown in fig. 1, a power protection circuit 1 according to an embodiment of the present application may include: an overcurrent and overvoltage protection module 10 and a differential mode filtering module 20.
A first end of the overcurrent and overvoltage protection module 10 is connected with an output end of a power supply through a direct current bus, and a second end of the overcurrent and overvoltage protection circuit 10 is connected with an input end of the power supply through the direct current bus; the first end of the differential mode filtering module 20 is connected with the third end of the over-current and over-voltage protection module 10 through a direct current bus, the second end of the differential mode filtering module 20 is connected with the fourth end of the over-current and over-voltage protection module 10 through a direct current bus, the third end of the differential mode filtering module 20 is connected with the input end of a load through a direct current bus, and the fourth end of the differential mode filtering module 20 is connected with the output end of the load through a direct current bus.
The overcurrent and overvoltage protection module 10 adjusts the state of a channel of the overcurrent and overvoltage protection module 10 according to a direct current signal input from the output end of a power supply to the power supply protection circuit, when the power supply protection circuit has an overcurrent or overheat condition, the overcurrent and overvoltage protection module 10 breaks the channel, when the current and the temperature are recovered to be normal, the state of the channel is automatically recovered, when the power supply protection circuit has an overvoltage condition, the overcurrent and overvoltage protection module 10 adjusts the voltage of the channel to control the direct current signal in the power supply protection circuit to be within a preset voltage range, and therefore the influence of overcurrent and overvoltage on a rear-stage load is avoided.
The differential mode filtering module 20 is configured to filter a differential mode signal from the dc signal input to the differential mode filtering module 20, and provide a low-noise dc signal for an external load.
The application provides a power protection circuit includes: the overcurrent and overvoltage protection module is used for adjusting the state of a channel according to an input direct current signal and controlling the direct current signal in the power supply protection circuit to be within a preset voltage range; the differential mode filtering module is used for filtering differential mode signals in direct current signals input to the differential mode filtering module. This application is when overflowing excessive pressure through overflowing overvoltage protection module, automatic disconnection and automatic recovery route avoid overflowing the influence of excessive pressure to the back level load, filter through the signal of differential mode filter module in to the circuit to promote the electromagnetic compatibility performance of the power network that power protection circuit located, compromise protection and filtering function, the reliability is high.
On the basis of the above embodiments, as shown in fig. 2, the output control circuit 1 of the embodiment of the present application may further include: and a reverse-connection prevention protection module 30.
The overcurrent and overvoltage protection module 10 is connected with the differential mode filtering module 20 through an anti-reverse connection protection module 30, wherein a first end of the anti-reverse connection protection module 30 is connected with a third end of the overcurrent and overvoltage protection module 10 through a direct current bus, a second end of the anti-reverse connection protection module 30 is connected with a fourth end of the overcurrent and overvoltage protection module 10 through a direct current bus, a third end of the anti-reverse connection protection module 30 is connected with a first end of the differential mode filtering module 20 through a direct current bus, and a fourth end of the anti-reverse connection protection module 30 is connected with a second end of the differential mode filtering module 20 through a direct current bus.
The reverse connection prevention protection module 30 is used for providing reverse connection prevention protection for a power supply network where the power supply protection circuit is located, and preventing the damage of reverse connection of the power supply polarity to a rear-stage load. In some embodiments, the power protection circuit disconnects the path when the input terminal of the power supply and the output terminal of the power supply are reversely connected, for example, when the first terminal of the over-current and over-voltage protection module 10 is connected to the input terminal of the power supply (the negative terminal of the power supply) and the second terminal of the over-current and over-voltage protection module 10 is connected to the output terminal of the power supply (the positive terminal of the power supply).
On the basis of the above embodiments, as shown in fig. 3, the output control circuit 1 of the embodiment of the present application may further include: the common mode filter FL1.
The first end of the common mode filter FL1 is connected to the third end of the overcurrent and overvoltage protection module 10 through the dc bus, the second end of the common mode filter FL1 is connected to the fourth end of the overcurrent and overvoltage protection circuit through the dc bus, the third end of the common mode filter FL1 is connected to the first end of the reverse connection prevention protection module 30 through the dc bus, and the fourth end of the common mode filter FL1 is connected to the second end of the reverse connection prevention protection module 30 through the dc bus.
The common mode filter FL1 is used for filtering a common mode signal in a load at a later stage, for example, filtering a common mode signal generated by the reverse connection protection module 30 and the differential mode filter module 20, so as to reduce Electromagnetic Interference (EMI) to an input terminal of the power supply.
As a possible embodiment, as shown in fig. 4, the overcurrent and overvoltage protection module 10 includes: the overcurrent and overvoltage protection circuit comprises a self-recovery fuse F1, a first diode D1 and a first capacitor C1, wherein the first end of the self-recovery fuse F1 is used as the first end of the overcurrent and overvoltage protection module and is connected with the output end of a power supply; a first end of the first diode D1 is connected with a second end of the self-recovery fuse F1, and a second end of the first diode D1 is connected with an input end of the power supply as a second end of the overcurrent and overvoltage protection module 10; the first end of the first capacitor C1 is connected to the second end of the self-recovery fuse F1, the second end of the first capacitor C1 is connected to the second end of the first diode D1, the first end of the first capacitor C1 is used as the third end of the over-current high-voltage protection module 10 and is connected to the first end of the common mode filter FL1, and the second end of the first capacitor C1 is used as the fourth end of the over-current over-voltage protection module 10 and is connected to the second end of the common mode filter FL1.
In some embodiments, the self-recovery fuse F1 automatically opens to protect the circuit when the whole circuit is over-current and over-temperature, and automatically recovers the on-state until the current and the temperature are normal, so as to ensure that the power supply normally supplies power to the rear-stage load, and the self-recovery fuse is reusable and high in reliability.
In some embodiments, the first diode D1 is a Transient voltage suppression diode (TVS), when the whole circuit is over-voltage, the first diode D1 is turned on to clamp the voltage to a required voltage range, so that the over-voltage does not affect the rear-stage load, and the first diode D1, the self-recovery fuse F1 and the first capacitor C1 are combined together to perform over-current and over-voltage protection on the whole power network where the power protection circuit is located.
As shown in fig. 4, the reverse-connection prevention protection module includes: the circuit comprises a first resistor R1, a second resistor R2, a second capacitor C1, a second diode D2 and a triode Q1, wherein the first end of the first resistor R1 is used as the first end of an anti-reverse-connection protection module 30 and connected with the third end of a common-mode filter FL1, and the first end of the first resistor R1 is simultaneously used as the third end of the anti-reverse-connection protection module 30 and connected with the first end of a differential-mode filter 20; the first end of the second resistor R2 is connected to the second end of the first resistor R, and the second end of the second resistor R2 is connected to the second end of the differential-mode filter 20 as the fourth end of the reverse-connection protection module 30; a first end of the second capacitor C2 is connected with a second end of the first resistor R1, and a second end of the second capacitor C2 is connected with a second end of the second resistor R2; a first end of the second diode D2 is connected with a second end of the first resistor R1, and a second end of the second diode D2 is connected with a second end of the second resistor R2; the gate of the triode Q1 is connected to the second end of the first resistor R1, the drain of the triode Q1 is connected to the fourth end of the common mode filter as the second end of the reverse connection prevention protection module 30, and the source of the triode Q1 is connected to the second end of the second resistor R2.
In some embodiments, the triode Q1 is an N-type metal oxide field effect transistor, which provides reverse connection prevention protection for the entire power network where the power protection circuit is located, and prevents the power polarity reverse connection from damaging the rear-stage load; first resistance R1, second resistance R2, second electric capacity C2, second diode D2 main function is the voltage VGS between the grid (G foot) and the source electrode (S foot) of protection triode Q, make VGS can not the sudden change, excessive pressure, thereby can normally open or close triode Q1 ' S N channel and play and prevent the effect of joining conversely, utilize second diode D2 ' S clamping characteristic in addition, play fine guard action to triode Q1 ' S G foot and S foot, there is extremely low impedance when triode Q1 ' S G foot and S foot switch on simultaneously, can not consume too much energy, promote power network ' S efficiency.
As shown in fig. 4, the differential-mode filtering module 20 includes: the circuit comprises a magnetic bead L1, a third capacitor C3 and a fourth capacitor C4, wherein a first end of the magnetic bead L1 serving as a first end of the differential mode filtering module 20 is connected with a third end of the reverse connection prevention protection module 30, and a second end of the magnetic bead L1 serving as a third end of the differential mode filtering module 20 is connected with an input end of a load; the first end of the third capacitor C3 is connected to the first end of the magnetic bead L1, the second end of the third capacitor C3 serves as the second end of the differential mode filter module 20 and is connected to the fourth end of the reverse connection prevention protection module 30, and the second end of the third capacitor C3 serves as the fourth end of the differential mode filter circuit 20 and is connected to the output end of the load; a first end of the fourth capacitor C4 is connected to the second end of the magnetic bead L1, and a second end of the fourth capacitor C4 is connected to the second end of the third capacitor C3.
To sum up, the power protection circuit that this application proposed includes: the overcurrent and overvoltage protection module is used for adjusting the state of a channel according to an input direct current signal and controlling the direct current signal in the power supply protection circuit to be within a preset voltage range; the differential mode filtering module is used for filtering differential mode signals in direct current signals input to the differential mode filtering module. This application is when overflowing the excessive pressure through overflowing overvoltage protection module, automatic disconnection and automatic recovery route, avoid overflowing the influence of excessive pressure to the back level load, through common mode filter filtering common mode signal, in order to reduce the electromagnetic interference to the input of power, prevent the power polarity reversal through preventing reverse connection protection module and connect the harm to the back level load, carry out the differential mode filtering through the signal of differential mode filter module in to the circuit, in order to promote the electromagnetic compatibility performance of the power network that power protection circuit located, protection and filtering function are compromise to this application, can be more reliable high.
In order to implement the above embodiments, the embodiments of the present application further provide a power protection device.
As shown in fig. 5, the controller 50 according to the embodiment of the present disclosure may specifically include: a power protection circuit 1 as in any of the above embodiments.
The power protection device of this application embodiment, when overflowing the excessive pressure through overflowing overvoltage protection module, automatic disconnection and automatic recovery route avoid overflowing the influence of excessive pressure to the back level load, filter the signal in the circuit through the differential mode filtering module to promote the electromagnetic compatibility performance of the power network that power protection circuit located, compromise protection and filtering function, the reliability is high.
In order to realize the embodiment, the embodiment of the application also provides a vehicle.
As shown in fig. 6, a vehicle 60 according to an embodiment of the present disclosure may specifically include: such as power protection device 50 shown in fig. 5.
The vehicle of this application embodiment, when overflowing the excessive pressure through overflowing overvoltage protection module, automatic disconnection and automatic recovery route avoid overflowing the influence of excessive pressure to the back level load, carry out the filtering through the signal of differential mode filter module in to the circuit to promote the electromagnetic compatibility performance of the power network that power protection circuit located, compromise protection and filtering function, the reliability is high.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A power protection circuit, comprising:
the overcurrent and overvoltage protection module is used for adjusting the state of a channel according to an input direct current signal and controlling the direct current signal in the power supply protection circuit to be within a preset voltage range;
the first end of the differential mode filtering module is connected with the third end of the over-current and over-voltage protection module, the second end of the differential mode filtering module is connected with the fourth end of the over-current and over-voltage protection module, the third end of the differential mode filtering module is connected with the input end of a load, the fourth end of the differential mode filtering module is connected with the output end of the load, and the differential mode filtering module is used for filtering differential mode signals in direct current signals input to the differential mode filtering module.
2. The power protection circuit according to claim 1, further comprising:
the protection circuit comprises an anti-reverse-connection protection module, wherein a first end of the anti-reverse-connection protection module is connected with a third end of the overcurrent and overvoltage protection module, a second end of the anti-reverse-connection protection module is connected with a fourth end of the overcurrent and overvoltage protection module, a third end of the anti-reverse-connection protection module is connected with a first end of the differential mode filtering module, a fourth end of the anti-reverse-connection protection module is connected with a second end of the differential mode filtering module, and the anti-reverse-connection protection module is used for disconnecting a circuit when the power supply protection circuit is reversely connected with an input end of the power supply and an output end of the power supply.
3. The power protection circuit according to claim 2, further comprising:
the first end of the common mode filter is connected with the third end of the overcurrent and overvoltage protection module, the second end of the common mode filter is connected with the fourth end of the overcurrent and high-voltage protection circuit, the third end of the common mode filter is connected with the first end of the reverse connection prevention protection module, the fourth end of the common mode filter is connected with the second end of the reverse connection prevention protection module, and the common mode filter is used for filtering common mode signals generated by the reverse connection prevention protection module and the differential mode filtering module.
4. The power protection circuit of claim 1, wherein the over-current and over-voltage protection module comprises:
a first end of the self-recovery fuse is used as a first end of the overcurrent and overvoltage protection module;
a first end of the first diode is connected with a second end of the self-recovery fuse, and a second end of the first diode is used as a second end of the overcurrent and overvoltage protection module;
the first end of the first capacitor is connected with the second end of the self-recovery fuse, the second end of the first capacitor is connected with the second end of the first diode, the first end of the first capacitor is used as the third end of the overcurrent and overvoltage protection module, and the second end of the first capacitor is used as the fourth end of the overcurrent and overvoltage protection module.
5. The power protection circuit according to claim 2, wherein the reverse-connection prevention protection module comprises:
the first end of the first resistor is used as the first end of the reverse connection prevention protection module and the third end of the reverse connection prevention protection module;
a first end of the second resistor is connected with a second end of the first resistor, and the second end of the second resistor is used as a fourth end of the reverse connection prevention protection module;
a first end of the second capacitor is connected with a second end of the first resistor, and a second end of the second capacitor is connected with a second end of the second resistor;
a first end of the second diode is connected with the second end of the first resistor, and a second end of the second diode is connected with the second end of the second resistor;
the grid electrode of the triode is connected with the second end of the first resistor, the drain electrode of the triode is used as the second end of the reverse connection prevention protection module, and the source electrode of the triode is connected with the second end of the second resistor.
6. The power protection circuit of claim 1, wherein the differential mode filtering module comprises:
a first end of the magnetic bead is used as a first end of the differential-mode filtering module, and a second end of the magnetic bead is used as a third end of the differential-mode filtering module;
a first end of the third capacitor is connected with the first end of the magnetic bead, and a second end of the third capacitor is used as a second end of the differential-mode filtering module and a fourth end of the differential-mode filtering circuit;
and a first end of the fourth capacitor is connected with the second end of the magnetic bead, and a second end of the fourth capacitor is connected with the second end of the third capacitor.
7. The power protection circuit of claim 4, wherein the first diode is a transient voltage suppression diode.
8. The power protection circuit of claim 5, wherein the second diode is a zener diode and the transistor is an N-type mosfet.
9. A power supply protection device, comprising: the power protection circuit of any one of claims 1-8.
10. A vehicle characterized by comprising the power supply protection device according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220384515.6U CN217789298U (en) | 2022-02-24 | 2022-02-24 | Power protection circuit, device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220384515.6U CN217789298U (en) | 2022-02-24 | 2022-02-24 | Power protection circuit, device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217789298U true CN217789298U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220384515.6U Active CN217789298U (en) | 2022-02-24 | 2022-02-24 | Power protection circuit, device and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217789298U (en) |
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2022
- 2022-02-24 CN CN202220384515.6U patent/CN217789298U/en active Active
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