CN217087787U - Power distribution circuit of navigation controller - Google Patents
Power distribution circuit of navigation controller Download PDFInfo
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- CN217087787U CN217087787U CN202220896985.0U CN202220896985U CN217087787U CN 217087787 U CN217087787 U CN 217087787U CN 202220896985 U CN202220896985 U CN 202220896985U CN 217087787 U CN217087787 U CN 217087787U
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Abstract
The utility model relates to a navigation controller distribution circuit, it includes constant current circuit and protection circuit, the one end of constant current circuit is coupled in alternating current power supply, the other end of constant current circuit is coupled in navigation controller, constant current circuit is used for providing stable operating voltage for navigation controller, the protection circuit electricity is connected in constant current circuit, the protection circuit is used for detecting the voltage condition of inputing to navigation controller and according to the power supply state of detection result control constant current circuit for navigation controller, when the protection circuit detects that constant current circuit output voltage is too high, stop the constant current circuit open circuit for navigation controller power supply. The method has the advantages that the navigation controller is prevented from being burnt out due to high pulse voltage impact, and the power distribution circuit of the navigation controller has an overvoltage protection function.
Description
Technical Field
The application relates to the technical field of controller power distribution, in particular to a power distribution circuit of a navigation controller.
Background
Navigation controllers are used to provide advanced driver assistance to vehicles, and are capable of integrating computationally intensive sensor data processing and sensor fusion work and control strategy development into one control unit and facilitate the creation of a structured and organized vehicle control network.
The existing navigation controller requires to be configured with a set of special power distribution circuit, however, when the power distribution circuit of the navigation controller is in an overvoltage condition, the power distribution circuit of the existing navigation controller cannot protect the navigation controller from the overvoltage condition, the high pulse voltage easily impacts the navigation controller, and the navigation controller is easily damaged, so that a certain improvement space exists.
SUMMERY OF THE UTILITY MODEL
In order to prevent the navigation controller from being burnt out due to high pulse voltage impact and enable a power distribution circuit of the navigation controller to have an overvoltage protection function, the application provides the power distribution circuit of the navigation controller.
The application provides a navigation controller distribution circuit adopts following technical scheme:
a power distribution circuit of a navigation controller comprises a constant current circuit and a protection circuit, wherein one end of the constant current circuit is coupled with an alternating current power supply, the other end of the constant current circuit is coupled with the navigation controller, the constant current circuit is used for providing stable working voltage for the navigation controller, the protection circuit is electrically connected with the constant current circuit, the protection circuit is used for detecting the voltage condition input to the navigation controller and controlling the power supply state of the constant current circuit for the navigation controller according to the detection result, and when the protection circuit detects that the output voltage of the constant current circuit is overhigh, the constant current circuit is broken and stops supplying power for the navigation controller.
By adopting the technical scheme, the alternating current voltage is input through the input end of the constant current circuit, the constant current circuit carries out rectification and voltage stabilization treatment on the alternating current voltage to form stable direct current voltage to be output to the navigation controller, the constant current direct current voltage is provided for the navigation controller, the protection circuit is coupled to the constant current, the voltage value output to the navigation controller by the constant current circuit is detected in real time through the protection circuit, when the output voltage of the constant current circuit is overhigh and generates high pulse voltage, the protection circuit is conducted and started, the protection circuit controls the constant current circuit to be in an open circuit state, the constant current circuit cannot output overvoltage voltage to the navigation controller, the navigation controller is prevented from being burnt out due to impact of the high pulse voltage, and the distribution circuit of the navigation controller has an overvoltage protection function.
Optionally, the constant current circuit includes a rectification filter module, a voltage transformation module and a voltage stabilizer, a primary side of the voltage transformation module is coupled to an ac power supply, a secondary side of the voltage transformation module is coupled to the rectification filter module, and the voltage transformation module is configured to output a stepped-down ac voltage;
the rectification filter module comprises a first alternating current input end, a second alternating current input end, a positive output end and a negative output end, wherein the first alternating current input end and the second alternating current input end are both coupled to the secondary side of the voltage transformation module, the positive output end is coupled to the voltage stabilizer, and the negative output end is used for providing a grounding end;
the input end of the voltage stabilizer is coupled with the anode output end, the output end of the voltage stabilizer is coupled with the navigation controller, and the voltage stabilizer is used for performing voltage stabilization treatment on the direct current voltage to form stable direct current voltage and output the stable direct current voltage to the navigation controller.
By adopting the technical scheme, the alternating voltage is subjected to voltage reduction processing through the transformation module, the low alternating voltage is output to the rectification filter module, the rectification filter module carries out rectification conversion processing on the alternating voltage output by the transformation module to form direct current voltage, the direct current voltage is subjected to filtering processing, the filtered direct current voltage is output to the voltage stabilizer, stable direct current voltage is formed through the voltage stabilizer and is output to the navigation controller, and the power supply function of the navigation controller is realized.
Optionally, the constant current circuit further includes a demagnetization filtering module, an input end of the demagnetization filtering module is coupled to the secondary side of the voltage transformation module, and an output end of the demagnetization filtering module is coupled to the rectification filtering module.
By adopting the technical scheme, the demagnetization filtering module is arranged, the demagnetization filtering processing is carried out on the alternating voltage output by the voltage transformation module, and a more stable alternating voltage is formed and output to the rectification filtering module.
Optionally, the demagnetization filtering module includes a common mode filtering inductor L and a first capacitor C1, two ends of the first capacitor C1 are coupled to the secondary side of the voltage transformation module, one end of the first capacitor C1 is coupled to the common mode filtering inductor L with a connection node of the voltage transformation module, the other end of the common mode filtering inductor L is coupled to the first ac input end of the rectification filtering module, and the other end of the first capacitor C1 is coupled to the second ac input end of the rectification filtering module with a connection node of the voltage transformation module.
By adopting the technical scheme, after the common mode filter inductor L receives the alternating voltage, the common mode filter inductor L is used for demagnetizing and filtering the alternating voltage, so that the alternating voltage input to the rectifying and filtering module is more stable, and the magnetic influence of the alternating voltage output by the alternating current power supply on the voltage of the constant current circuit is reduced.
Optionally, the protection circuit includes a voltage sampling module, a control module and a switch module, an input end of the voltage sampling module is coupled to the voltage stabilizer, an output end of the voltage sampling module is coupled to the control module, and the voltage sampling module is configured to sample an output voltage of the constant current circuit;
the input end of the control module is coupled with the voltage sampling module, the output end of the control module is coupled with the switch module, and the control module is used for receiving the sampling voltage of the voltage sampling module, outputting a control signal to the switch module according to the value of the sampling voltage and controlling the on-off state of the switch module;
the control end of the switch module is connected with the output end of the control module, the switch module is coupled between the voltage stabilizer and the anode output end of the rectification filter module, and the switch module is used for enabling the anode output end of the rectification filter module and the voltage stabilizer to be in an open circuit state when the control module outputs a control signal.
By adopting the technical scheme, the voltage sampling module detects the condition of sampling constant current circuit output voltage in real time, when the constant current circuit outputs overhigh voltage, the voltage sampling module outputs the sampling voltage to the control module, when the control module receives overhigh voltage, the control module outputs a control signal to the switch module, the control switch module is in a conduction state, the switch module enables the rectifying and filtering module in the constant current circuit to be in a disconnection state between the voltage stabilizers, the overhigh voltage cannot be output to the voltage stabilizers and the navigation controller, and the voltage stabilizers and the navigation controller are protected.
Optionally, the voltage sampling module includes a first adjustable resistor RP1, a second adjustable resistor RP2, a first diode D1 and a second diode D2, one end of the first adjustable resistor RP1 is coupled to the input end of the voltage regulator, one end of the second adjustable resistor RP2 is coupled to the output end of the voltage regulator, a control end of the first adjustable resistor RP1 is coupled to the anode of the first diode D1, the cathode of the first diode D1 is coupled to the control module, a control end of the second adjustable resistor RP2 is coupled to the anode of the second diode D2, the cathode of the second diode D2 is coupled to the cathode of the first diode D1, and the other end of the first adjustable resistor RP1 and the other end of the second adjustable resistor RP2 are both grounded.
By adopting the technical scheme, the voltage condition before the voltage stabilizer is input is sampled and detected through the first adjustable resistor RP1, the voltage condition output by the voltage stabilizer is sampled and detected through the second adjustable resistor RP2, when the overvoltage condition occurs in a constant current circuit or the voltage stabilizer outputs high pulse voltage, the first adjustable resistor RP1 and the second adjustable resistor RP2 divide the voltage to enable the first diode D1 and the second diode D2 to be conducted, the high level is output, the voltage sampling module outputs a sampling voltage value to the control module, and the voltage sampling function is realized.
Optionally, the control module includes a control chip U1, an input terminal of the control chip U1 is coupled to a connection node between the cathode of the first diode D1 and the cathode of the second diode D2, and an output terminal of the control chip U1 is coupled to the switch module.
By adopting the technical scheme, when the control module receives the sampling voltage output by the voltage sampling module, the input end of the control chip U1 inputs a high level, the output end of the control chip U1 outputs a low level, and the control module outputs a control signal to the switch module.
Optionally, the switch module includes a transistor Q and a relay KM1, a base of the transistor Q is coupled to an output terminal of the control chip U1, an emitter of the transistor Q is coupled to a power supply voltage after being connected in series with a coil portion of the relay KM1, a collector of the transistor Q is grounded, the relay KM1 includes a normally closed contact switch KM1-1, and the normally closed contact switch KM1-1 is connected in series between an anode output terminal of the rectifying and filtering module and an input terminal of the voltage regulator.
By adopting the technical scheme, when the switch module receives a control signal, the base electrode of the triode Q is input with low level, the triode Q is in a conducting state, the coil part of the relay KM1 is electrified, the normally closed contact switch KM1-1 is in a disconnecting state, the voltage stabilizer is enabled not to have direct current voltage input, overvoltage voltage input to the voltage stabilizer is further prevented, the voltage stabilizer is protected, meanwhile, no voltage is output to the navigation controller, and the navigation controller is prevented from being impacted by high pulse voltage.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the input end of the constant current circuit inputs alternating current voltage, the constant current circuit carries out rectification and voltage stabilization treatment on the alternating current voltage to form stable direct current voltage which is output to the navigation controller, the constant current direct current voltage is provided for the navigation controller, the voltage value output to the navigation controller by the constant current circuit is detected in real time by the protection circuit, when the output voltage of the constant current circuit is too high and high pulse voltage is generated, the protection circuit is conducted and started, the constant current circuit is controlled to be in an open circuit state by the protection circuit, the constant current circuit cannot output overvoltage voltage to the navigation controller, the navigation controller is prevented from being burnt out due to impact of the high pulse voltage, and the power distribution circuit of the navigation controller has an overvoltage protection function;
2. the common-mode filter inductor L is used for demagnetizing and filtering the alternating voltage output by the voltage transformation module, so that the magnetic influence of the alternating voltage output by the alternating current power supply on the voltage of the constant current circuit is reduced, and the alternating voltage input to the rectification filter module is more stable;
3. the normally closed contact switch KM1-1 of switch module is arranged between the positive output end of the rectifying and filtering module and the input end of the voltage stabilizer, when overvoltage voltage is generated, the voltage stabilizer has no direct-current voltage input, so that the overvoltage voltage is prevented from being input to the voltage stabilizer, the voltage stabilizer is protected, meanwhile, the voltage stabilizer has no voltage output to the navigation controller, the navigation controller is prevented from being impacted by high pulse voltage, and the dual-protection function is realized.
Drawings
Fig. 1 is a block diagram of a power distribution circuit of a navigation controller according to an embodiment of the present application.
Fig. 2 is a circuit diagram of a power distribution circuit of a navigation controller according to an embodiment of the present application.
Description of reference numerals: 1. a constant current circuit; 11. a voltage transformation module; 12. a demagnetization filtering module; 13. a rectification filtering module; 14. a voltage regulator; 2. a protection circuit; 21. a voltage sampling module; 22. a control module; 23. and a switch module.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses navigation controller distribution circuit.
Referring to fig. 1 and 2, a navigation controller power distribution circuit includes a constant current circuit 1 and a protection circuit 2. The constant current circuit 1 includes a voltage transformation module 11, a degaussing filter module 12, a rectification filter module 13, and a voltage stabilizer 14. The transforming module 11 includes a transformer T, a primary side of which is coupled to the ac power supply, and a secondary side of which is coupled to the degaussing filter module 12; the degaussing filter module 12 includes a common mode filter inductor L and a first capacitor C1, both ends of the first capacitor C1 are coupled to the secondary side of the transformer T, one end of the first capacitor C1 and a connection node of the voltage transformation module 11 are coupled to the common mode filter inductor L, the other end of the common mode filter inductor L and the other end of the first capacitor C1 and the connection node of the transformer T are both coupled to the rectifying filter module 13, the degaussing filter module 12 performs degaussing filtering processing on the alternating voltage output by the voltage transformation module 11, and a more stable alternating voltage is output to the rectifying filter module 13.
The rectifier filter module 13 includes a diode D3, a diode D4, a diode D5, and a diode D6, a cathode of the diode D3 is coupled to an anode of the diode D4, a cathode of the diode D4 is coupled to a cathode of the diode D5, an anode of the diode D5 is coupled to a cathode of the diode D6, an anode of the diode D6 is coupled to an anode of the diode D3, a connection node between the diode D4 and the diode D5 is a first ac input terminal, a connection node between the diode D4 and the diode D5 is coupled to the common mode filter inductor L, a connection node between the diode D3 and the diode D6 is a second ac input terminal, a connection node between the diode D3 and the diode D6 is coupled to the other end of the first capacitor C1 and the connection node of the transformer T, a connection node between the diode D5 and the diode D6 is an anode output terminal, a connection node between the diode D5 and the diode D6 is coupled to the diode D3 and the diode D4 is a cathode output terminal for providing the power distribution regulator.
The input end of the voltage regulator 14 is coupled to a connection node between the diode D5 and the diode D6, the output end of the voltage regulator 14 is coupled to the navigation controller, and the voltage regulator 14 is configured to perform voltage stabilization on the dc voltage to form a stabilized dc voltage and output the stabilized dc voltage to the navigation controller.
The protection circuit 2 comprises a voltage sampling module 21, a control module 22 and a switching module 23. The voltage sampling module 21 includes a first adjustable resistor RP1, a second adjustable resistor RP2, a first diode D1, and a second diode D2, one end of the first adjustable resistor RP1 is coupled to the input end of the voltage regulator 14, one end of the second adjustable resistor RP2 is coupled to the output end of the voltage regulator 14, a control end of the first adjustable resistor RP1 is coupled to the anode of the first diode D1, the cathode of the first diode D1 is coupled to the control module 22, a control end of the second adjustable resistor RP2 is coupled to the anode of the second diode D2, the cathode of the second diode D2 is coupled to the cathode of the first diode D1, and the other end of the first adjustable resistor RP1 and the other end of the second adjustable resistor RP2 are both grounded.
An input terminal of the control module 22 is coupled to the voltage sampling module 21, an output terminal of the control module 22 is coupled to the switch module 23, the control module 22 is configured to receive a sampled voltage of the voltage sampling module 21 and output a control signal to the switch module 23 according to a value of the sampled voltage, the control module 22 includes a control chip U1, the chip U1 includes eight pins, a sixth pin of the chip U1 is an input terminal, a third pin of the chip U1 is an output terminal, a first pin of the chip U1 is grounded, a second pin of the chip U1 is coupled to a first resistor R1, a connection node between the first resistor R1 and the second pin of the chip U1 is coupled to a second capacitor C2, another terminal of the second capacitor C2 is grounded, another terminal of the first resistor R1 is coupled to a power voltage, an eighth pin of the chip U1 is coupled to a fourth pin of the chip U1, a fourth pin of the chip U1 is coupled to a zener diode, another terminal of the zener diode is coupled to the power voltage, the sixth pin of the chip U1 is coupled to the connection node between the cathode of the first diode D1 and the cathode of the second diode D2, and the third pin of the chip U1 is coupled to the switch module 23.
The control terminal of the switching module 23 is connected to the output terminal of the control module 22, and the switching module 23 is coupled between the voltage regulator 14 and the positive output terminal of the rectifying and filtering module 13. The switch module 23 comprises a PNP type triode Q and a relay KM1, wherein the base of the triode Q is coupled to the third pin of the chip U1, the emitter of the triode Q is coupled to the power voltage after being connected in series with the relay KM1, two ends of the relay KM1 are connected in parallel with a diode D7, the collector of the triode Q is grounded, the relay KM1 comprises a normally closed contact switch KM1-1, and the normally closed contact switch KM1-1 is connected in series between the positive output end of the rectifying and filtering module 13 and the input end of the voltage stabilizer 14.
The implementation principle of a power distribution circuit of a navigation controller in the embodiment of the application is as follows:
the voltage transformation module 11 steps down the alternating voltage input to the constant current circuit 1, output low alternating voltage to the demagnetization filter module 12, after the common mode filter inductor L of the demagnetization filter module 12 receives the alternating voltage, demagnetization filter processing is performed on the alternating voltage through the common mode filter inductor L, reduce the magnetic influence of the alternating voltage output by the alternating current power supply on the voltage of the constant current circuit 1, output more stable alternating voltage to the rectification filter module 13, the rectification filter module 13 performs rectification conversion processing on the alternating voltage to form direct current voltage, output the direct current voltage to the voltage stabilizer 14, the voltage stabilizer 14 forms stable direct current voltage and outputs the stable direct current voltage to the navigation controller, and power supply for the navigation controller is realized.
When the voltage input to the voltage stabilizer 14 changes, so that the voltage input to the voltage stabilizer 14 is too high, or when the voltage stabilizer 14 outputs high pulse voltage, the voltage sampling module 21 detects the voltage and outputs the sampled voltage to the control module 22, the first adjustable resistor RP1 of the voltage sampling module 21 samples and detects the voltage condition before the voltage stabilizer 14 is input, the second adjustable resistor RP2 samples and detects the voltage condition output by the voltage stabilizer 14, the first adjustable resistor RP1 and the second adjustable resistor RP2 divide the voltage to make the first diode D1 and the second diode D2 conduct and output high level, the sixth pin of the control chip U1 of the control module 22 inputs high level, the third pin of the chip U1 outputs low level, the base electrode of the PNP transistor Q of the switch module 23 inputs low level, the transistor Q is in a conducting state, the coil part of the relay KM1 is electrified, and the switch KM1-1 is in a disconnected state, make to be open circuit state between the anodal output of rectification filtering module 13 and the input of stabiliser 14, make stabiliser 14 do not have direct current voltage input, and then prevent overvoltage voltage input to stabiliser 14, protect stabiliser 14, make stabiliser 14 do not have voltage output to navigation control ware simultaneously, prevent that navigation control ware from receiving high pulse voltage and strikeing.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A navigation controller power distribution circuit, characterized by: the navigation device comprises a constant current circuit (1) and a protection circuit (2), wherein one end of the constant current circuit (1) is coupled to an alternating current power supply, the other end of the constant current circuit (1) is coupled to a navigation controller, the constant current circuit (1) is used for providing stable working voltage for the navigation controller, the protection circuit (2) is electrically connected to the constant current circuit (1), the protection circuit (2) is used for detecting the voltage condition input to the navigation controller and controlling the power supply state of the constant current circuit (1) for the navigation controller according to the detection result, and when the protection circuit (2) detects that the output voltage of the constant current circuit (1) is too high, the constant current circuit (1) is disconnected and stops supplying power for the navigation controller.
2. A navigation controller power distribution circuit as claimed in claim 1, wherein: the constant current circuit (1) comprises a rectification filter module (13), a transformation module (11) and a voltage stabilizer (14), wherein the primary side of the transformation module (11) is coupled to an alternating current power supply, the secondary side of the transformation module (11) is coupled to the rectification filter module (13), and the transformation module (11) is used for outputting the AC voltage after voltage reduction;
the rectification filter module (13) comprises a first alternating current input end, a second alternating current input end, a positive output end and a negative output end, wherein the first alternating current input end and the second alternating current input end are both coupled to the secondary side of the voltage transformation module (11), the positive output end is coupled to the voltage stabilizer (14), and the negative output end is used for providing a grounding end;
the input end of the voltage stabilizer (14) is coupled with the anode output end, the output end of the voltage stabilizer (14) is coupled with the navigation controller, and the voltage stabilizer (14) is used for performing voltage stabilization treatment on the direct current voltage to form stable direct current voltage and outputting the stable direct current voltage to the navigation controller.
3. A navigation controller power distribution circuit as claimed in claim 2, wherein: the constant current circuit (1) further comprises a demagnetization filtering module (12), the input end of the demagnetization filtering module (12) is coupled to the secondary side of the voltage transformation module (11), and the output end of the demagnetization filtering module (12) is coupled to the rectification filtering module (13).
4. A navigation controller power distribution circuit as claimed in claim 3, wherein: the demagnetization filtering module (12) comprises a common-mode filtering inductor L and a first capacitor C1, two ends of the first capacitor C1 are coupled to the secondary side of the transformation module (11), one end of the first capacitor C1 is coupled to the common-mode filtering inductor L with a connection node of the transformation module (11), the other end of the common-mode filtering inductor L is coupled to a first alternating current input end of the rectification filtering module (13), and the other end of the first capacitor C1 is coupled to a second alternating current input end of the rectification filtering module (13) with a connection node of the transformation module (11).
5. A navigation controller power distribution circuit as claimed in claim 1, wherein: the protection circuit (2) comprises a voltage sampling module (21), a control module (22) and a switch module (23), wherein the input end of the voltage sampling module (21) is coupled to the voltage stabilizer (14), the output end of the voltage sampling module (21) is coupled to the control module (22), and the voltage sampling module (21) is used for sampling the output voltage of the constant current circuit (1);
the input end of the control module (22) is coupled to the voltage sampling module (21), the output end of the control module (22) is coupled to the switch module (23), the control module (22) is used for receiving the sampling voltage of the voltage sampling module (21), outputting a control signal to the switch module (23) according to the value of the sampling voltage, and controlling the on-state or off-state of the switch module (23);
the control end of the switch module (23) is connected with the output end of the control module (22), the switch module (23) is coupled between the voltage stabilizer (14) and the anode output end of the rectification filter module (13), and the switch module (23) is used for enabling the anode output end of the rectification filter module (13) and the voltage stabilizer (14) to be in an open circuit state when the control module (22) outputs a control signal.
6. A navigation controller power distribution circuit as claimed in claim 5, wherein: the voltage sampling module (21) comprises a first adjustable resistor RP1, a second adjustable resistor RP2, a first diode D1 and a second diode D2, one end of the first adjustable resistor RP1 is coupled to the input end of the voltage stabilizer (14), one end of the second adjustable resistor RP2 is coupled to the output end of the voltage stabilizer (14), the control end of the first adjustable resistor RP1 is coupled to the anode of the first diode D1, the cathode of the first diode D1 is coupled to the control module (22), the control end of the second adjustable resistor RP2 is coupled to the anode of the second diode D2, the cathode of the second diode D2 is coupled to the cathode of the first diode D1, and the other end of the first adjustable resistor RP1 and the other end of the second adjustable resistor RP2 are both grounded.
7. A navigation controller power distribution circuit as claimed in claim 6, wherein: the control module (22) comprises a control chip U1, an input end of the control chip U1 is coupled to a connection node of the cathode of the first diode D1 and the cathode of the second diode D2, and an output end of the control chip U1 is coupled to the switch module (23).
8. A navigation controller power distribution circuit as claimed in claim 7, wherein: the switch module (23) comprises a triode Q and a relay KM1, wherein the base electrode of the triode Q is coupled to the output end of the control chip U1, the emitter electrode of the triode Q is coupled to the power voltage after being connected in series with the coil part of the relay KM1, the collector electrode of the triode Q is grounded, the relay KM1 comprises a normally closed contact switch KM1-1, and the normally closed contact switch KM1-1 is connected in series between the positive output end of the rectifying and filtering module (13) and the input end of the voltage stabilizer (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220896985.0U CN217087787U (en) | 2022-04-18 | 2022-04-18 | Power distribution circuit of navigation controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220896985.0U CN217087787U (en) | 2022-04-18 | 2022-04-18 | Power distribution circuit of navigation controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217087787U true CN217087787U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220896985.0U Active CN217087787U (en) | 2022-04-18 | 2022-04-18 | Power distribution circuit of navigation controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN217087787U (en) |
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2022
- 2022-04-18 CN CN202220896985.0U patent/CN217087787U/en active Active
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