CN117673838A - A electric spark circuit and DC socket are prevented in charging for DC socket - Google Patents
A electric spark circuit and DC socket are prevented in charging for DC socket Download PDFInfo
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- CN117673838A CN117673838A CN202311844886.3A CN202311844886A CN117673838A CN 117673838 A CN117673838 A CN 117673838A CN 202311844886 A CN202311844886 A CN 202311844886A CN 117673838 A CN117673838 A CN 117673838A
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- 238000010892 electric spark Methods 0.000 title abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 64
- 230000008878 coupling Effects 0.000 claims description 32
- 238000010168 coupling process Methods 0.000 claims description 32
- 238000005859 coupling reaction Methods 0.000 claims description 32
- 238000001914 filtration Methods 0.000 claims description 17
- 230000003071 parasitic effect Effects 0.000 claims description 12
- 230000003111 delayed effect Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
The application relates to the technical field of charging circuits, in particular to a charging anti-spark circuit for a DC socket and the DC socket. The DC socket includes connecting socket, and the electric spark circuit is prevented in charging includes: the device comprises a switch control module, an anode load output end, a cathode load output end and a delay charging module; the switch control module is electrically connected between the connecting socket and the load and used for controlling the on-off of current between the DC socket and the load; the delay charging module is connected in series between the connecting socket and the switch control module, a third pin of the connecting socket is electrically connected with the switch control module through the delay charging module, and the delay charging module is configured to conduct the connecting socket to be electrified when the DC plug is inserted into the connecting socket for delay. The DC plug has the effect of solving the problem of electric sparks generated when the existing DC plug is plugged into a DC socket.
Description
Technical Field
The application relates to the technical field of charging circuits, in particular to a charging anti-spark circuit for a DC socket and the DC socket.
Background
At present, as intelligent small household appliances such as household beauty instruments are increasingly closely connected with daily life, the intelligent small household appliances go into thousands of households. More and more intelligent small appliances are powered by an adapter equipped with a DC plug, and when the plug is plugged into the appliance with electricity, an electric spark is generated if the air between the plug and the socket breaks down. Such sparks can cause corrosion of the contact points, which over time can lead to reduced performance of the plug and socket, and even can affect proper operation of the device.
However, the current industry employs the addition of capacitance at the DC input and transient suppression diodes (TVS) to protect the later stage circuitry. When the DC plug is plugged into the DC socket, the voltage on the capacitor cannot be suddenly changed easily because the rear-end circuit is provided with a large amount of capacitors, so that the instant current for plugging the DC plug into the DC socket is overlarge, electric sparks are generated, panic is caused for a user, the product experience is poor, and even a fire disaster can be caused when the voltage is serious.
Disclosure of Invention
In order to solve the problem that electric sparks are generated when an existing DC plug is plugged into a DC socket, the application provides a charging anti-electric spark circuit for the DC socket and the DC socket.
In a first aspect, the present application provides a charging anti-spark circuit for a DC outlet, which adopts the following technical scheme:
a charging anti-spark circuit for a DC outlet, the DC outlet including a connection outlet, the connection outlet being provided with a first pin, a second pin and a third pin, the charging anti-spark circuit comprising:
the switch control module is electrically connected between the connecting socket and the load and used for controlling the on-off of current between the connecting socket and the load;
the positive load output end is electrically connected with the load, and a third pin of the connecting socket is electrically connected with the positive load output end through the switch control module;
the negative load output end is electrically connected with the load, and the first pin of the connecting socket and the second pin of the connecting socket are electrically connected with the negative load output end;
the delay charging module is connected in series between the connecting socket and the switch control module, a third pin of the connecting socket is electrically connected with the switch control module through the delay charging module, and the delay charging module is configured to conduct power-on of the connecting socket when the DC plug is inserted into the connecting socket for delay.
Through adopting above-mentioned technical scheme, set up switch control module and time delay charging module on the DC socket, when the DC plug inserts the DC socket, the time delay of charging through time delay charging module is conducted with the control switch control module time delay to make the time delay of DC socket power on, avoid the DC plug to insert the DC socket because the high current produces the electric spark easily, improve the factor of safety of DC socket, the problem of producing the electric spark when current DC plug inserts the DC socket can be solved to the scheme in this application.
Optionally, the switch control module is a MOS tube, a source electrode of the MOS tube is connected to the third pin of the connection socket, a gate electrode of the MOS tube is connected to the delay charging module, and a drain electrode of the MOS tube is connected to the positive load output end.
By adopting the technical scheme, in an actual hardware circuit, the power-on and power-off control of a high-power load is performed, the MOS tube can be used as a switch for controlling, and the purpose of current slow start is achieved by controlling the impact current through the MOS tube.
Optionally, the delay charging module includes a charging capacitor, a first voltage dividing resistor and a second voltage dividing resistor, the first end of the charging capacitor is connected with a third pin of the connection socket and a source electrode of the MOS tube respectively, the second end of the charging capacitor is connected with a gate electrode of the MOS tube, the first end of the first voltage dividing resistor is connected with the third pin of the connection socket and the source electrode of the MOS tube respectively, the second end of the first voltage dividing resistor is connected with the first end of the second voltage dividing resistor and the gate electrode of the MOS tube respectively, the second end of the second voltage dividing resistor is electrically connected with the negative load output end, and the second voltage dividing resistor is configured to release a residual voltage of the delay charging module when the DC plug is pulled out from the connection socket.
By adopting the technical scheme, when the DC plug is inserted into the connecting socket, no charge exists in the charging capacitor, the voltage of the charging capacitor is zero at the moment and is equivalent to short circuit, then the charging capacitor is charged through the third pin of the connecting socket, the voltage of the grid electrode of the MOS tube is reduced along with the rising of the charging quantity of the charging capacitor until the voltage of the grid electrode of the MOS tube reaches a preset value, the MOS tube is conducted, the delay of the DC socket is electrified, and the problem that electric sparks occur due to the fact that the instantaneous heavy current breaks down air when the DC plug is inserted into the DC socket is avoided; the purpose of delayed power-on is achieved through the charging capacitor, and the MOS tube is protected through voltage division through the first voltage dividing resistor and the second voltage dividing resistor; and the second voltage-dividing resistor is electrically connected with the negative load output end, and the residual voltage of the delay charging module is released when the DC plug is pulled out from the connecting socket, so that sparks are avoided when the DC plug is plugged into the connecting socket again.
Optionally, the charging anti-spark circuit further includes: and one end of the filtering module is connected with the positive load output end and the drain electrode of the MOS tube respectively, and the other end of the filtering module is connected with the negative load output end.
Through adopting above-mentioned technical scheme, through filtering module, realize carrying out the wave filtering to the power of input load to guarantee the stability of power, the electric current forms steady electric current through filtering module and supplies power to the load.
Optionally, the filtering module includes a first coupling filter capacitor and a second coupling filter capacitor, a first end of the first coupling filter capacitor and a first end of the second coupling filter capacitor are both connected with the positive load output end, and a second end of the first coupling filter capacitor and a second end of the second coupling filter capacitor are both connected with the negative load output end.
By adopting the technical scheme, the first coupling filter capacitor and the second coupling filter capacitor utilize the charge and discharge characteristics of the first coupling filter capacitor and the second coupling filter capacitor, so that stable current is formed after the current passes through the first coupling filter capacitor and the second coupling filter capacitor, and the instant current characteristics of the circuit are improved by the energy storage effect of the first coupling filter capacitor and the second coupling filter capacitor so as to adapt to loads with overlarge instant currents.
Optionally, the delay time of the delayed conduction of the MOS transistor is determined by a capacitance value of the charging capacitor in the delay charging module, a resistance value of the first voltage dividing resistor, and a resistance value of the second voltage dividing resistor.
By adopting the technical scheme, the delay time of the delayed conduction of the MOS tube is determined by the capacitance value of the charging capacitor, the resistance value of the first voltage dividing resistor and the resistance value of the second voltage dividing resistor, and products with different powers can be properly adjusted.
Optionally, the MOS transistor is a PMOS power switch transistor.
By adopting the technical scheme, the grid voltage of the PMOS power switch tube is smaller than a preset value and is conducted, and the PMOS power switch tube is suitable for high-end driving, wherein the high-end driving is to control output by using high voltage relative to load working voltage.
Optionally, a parasitic diode is disposed on the MOS transistor, and two ends of the parasitic diode are respectively connected to the source electrode of the MOS transistor and the drain electrode of the MOS transistor.
By adopting the technical scheme, under the condition that overvoltage is prevented by the parasitic diode, the MOS tube is burnt out, because the parasitic diode is reversely broken down before the overvoltage damages the MOS tube, and high current is directly connected to the ground, thereby avoiding the MOS tube from being burnt out.
In a second aspect, the present application provides a DC jack, which adopts the following technical scheme:
a DC outlet comprising a charging anti-spark circuit for a DC outlet as described in the first aspect above.
By adopting the technical scheme, the charging anti-spark circuit is formed by additionally arranging components in the existing circuit based on the DC socket, so that the problem of spark generation when the existing DC plug is inserted into the DC socket is solved, and the circuit is safe, simple and reliable, good in repeatability and free from additional control.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the DC socket is provided with a switch control module and a delay charging module, when the DC plug is inserted into the DC socket, the delay charging module is used for controlling the switch control module to conduct in a delay manner through the charging delay of the delay charging module, so that the delay of the DC socket is electrified, electric sparks are prevented from being easily generated due to large current when the DC plug is inserted into the DC socket, the safety coefficient of the DC socket is improved, and the problem of electric sparks generated when the existing DC plug is inserted into the DC socket can be solved by the scheme in the application;
2. the purpose of delayed power-on is achieved through the charging capacitor, and the MOS tube is protected through voltage division through the first voltage dividing resistor and the second voltage dividing resistor; the second voltage-dividing resistor is electrically connected with the negative load output end, and the residual voltage of the delay charging module is released when the DC plug is pulled out from the connecting socket, so that sparks are avoided when the DC plug is plugged into the connecting socket again;
3. by additionally arranging the filtering module, the power supply of an input load is filtered, so that the stability of the power supply is ensured, and the current forms stable current through the filtering module to supply power to the load.
Drawings
FIG. 1 is a flow chart of a charging anti-spark circuit for a DC outlet;
FIG. 2 is a circuit diagram of a charging anti-spark circuit for a DC outlet;
FIG. 3 is a circuit diagram of a time-lapse charging module in an embodiment of the present application;
fig. 4 is a circuit diagram of a filtering module in an embodiment of the present application.
Reference numerals illustrate: 1. a connection socket; 2. a switch control module; 3. an anode load output terminal; 4. a negative load output terminal; 5. a delay charging module; 6. and a filtering module.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
"connected" in the present invention encompasses both direct and indirect connections, such as those made through some active device, passive device, or electrically conductive medium; connections through other active or passive devices, such as through switches, follower circuits, etc. circuits or components, may be included as known to those skilled in the art, on the basis of achieving the same or similar functional objectives.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
Example 1
The embodiment of the application discloses a charging anti-spark circuit for a DC socket.
Referring to fig. 1 and 2, the charging anti-spark circuit is applied to a DC socket, and the present embodiment includes a connection socket 1, a switch control module 2, a positive load output terminal 3, a negative load output terminal 4, a delay charging module 5, and a filtering module 6. The switch control module 2 is electrically connected with the connection socket 1 and the load, so that the switch control module 2 controls the on-off of current between the connection socket 1 and the load. The delay charging module 5 is connected in series between the connecting socket 1 and the switch control module 2, when the DC plug is inserted into the connecting socket 1, the purpose of conducting the switch control module 2 in a delay mode is achieved, so that the connecting socket 1 is electrified in a delay mode, electric sparks are easily generated due to high current when the DC plug is inserted into the DC socket, and the safety coefficient of the DC socket is improved.
Wherein the positive load output end 3 and the negative load output end 4 are respectively connected to two ends of the load. The connecting socket 1 is provided with three pins, namely a first pin, a second pin and a third pin, wherein the third pin of the connecting socket 1 is electrically connected with the positive load output end 3, the third pin of the connecting socket 1 is electrically connected with the switch control module 2 through the delay charging module 5, and the switch control module 2 is electrically connected with the positive load output end 3. Meanwhile, the first pin of the connection socket 1 and the second pin of the connection socket 1 are electrically connected with the negative load output end 4.
Specifically, through the third pin and the time delay charging module 5 electric connection of connecting socket 1, with the realization to time delay charging circuit's charging, along with time delay charging circuit's charging voltage's increase, with make switch control module 2's input voltage step by step reduce, until switch control module 2's input voltage reaches the default after, switch control module 2 switches on, the time delay of DC socket can be realized to the scheme in this application, owing to the existence of time delay charging module 5, can avoid DC plug to break down the problem that the air produced the electric spark because of the instantaneous heavy current when inserting the DC socket.
In some examples, the switch control module 2 is a MOS transistor Q1, and more specifically, the MOS transistor Q1 is a PMOS transistor Q1. The gate voltage of the PMOS power switching transistor is turned on when it is smaller than a preset value. Specifically, the source electrode of the MOS transistor Q1 is electrically connected to the third pin of the connection socket 1, the gate electrode of the MOS transistor Q1 is electrically connected to the delay charging module 5, and the drain electrode of the MOS transistor Q1 is electrically connected to the positive load output end 3. That is, as the charging voltage of the delay charging circuit increases, the gate voltage of the PMOS power switching tube gradually decreases until the gate voltage of the PMOS power switching tube is smaller than a preset value, and then the PMOS power switching tube is turned on, thereby achieving the purpose of controlling the on-off of the current between the DC socket and the load.
Referring to fig. 3, the time-lapse charging module 5 includes a charging capacitor C1, a first voltage dividing resistor R1, and a second voltage dividing resistor R2. The first end of the charging capacitor C1 is connected with the third pin of the connecting socket 1 and the source electrode of the MOS tube Q1, and the second end of the charging capacitor C1 is connected with the grid electrode of the MOS tube Q1. The third pin of the connection socket 1 is electrically connected with the charging capacitor C1 to charge the charging capacitor C1. The first end of the first voltage dividing resistor R1 is respectively connected with the third pin of the connecting socket 1 and the source electrode of the MOS tube Q1, the second end of the first voltage dividing resistor R1 is respectively connected with the first end of the second voltage dividing resistor R2 and the grid electrode of the MOS tube Q1, and the second end of the second voltage dividing resistor R2 is electrically connected with the negative load output end 4. Specifically, at the moment when the DC plug is plugged into the connection socket 1, there is no charge in the charging capacitor C1, and at this time, the voltage of the charging capacitor C1 is zero, which corresponds to a short circuit. Then, the third pin of the connection socket 1 charges the charging capacitor C1, the voltage of the charging capacitor C1 gradually rises, and the voltage of the gate of the MOS transistor Q1 gradually decreases until the voltage of the gate of the MOS transistor Q1 decreases to a preset value, and then the MOS transistor Q1 is turned on. Therefore, the time delay electrification of the DC socket is realized, and the problem that electric sparks occur due to instantaneous high-current breakdown air when the DC plug is inserted into the DC socket is avoided.
Further, the delay time of the delayed conduction of the MOS transistor Q1 is determined by the capacitance value of the charging capacitor C1 in the delay charging module 5, the resistance value of the first voltage dividing resistor R1, and the resistance value of the second voltage dividing resistor R2.
It should be noted that the MOS transistor Q1 is protected by dividing the voltage by the first voltage dividing resistor R1 and the second voltage dividing resistor R2. In order to further protect the MOS transistor Q1, a parasitic diode D1 is disposed on the MOS transistor Q1, and two ends of the parasitic diode D1 are connected to the source of the MOS transistor Q1 and the drain of the MOS transistor Q1, respectively. Under the condition that the parasitic diode D1 is used for preventing the MOS tube Q1 from being burnt out, the parasitic diode D1 is firstly reversely broken down and high current is directly connected to the ground before the MOS tube Q1 is damaged by the overvoltage, so that the MOS tube Q1 is prevented from being burnt out. The MOS transistor Q1 can be burnt out when the source electrode and the drain electrode of the MOS transistor Q1 are reversely connected, and a passage is provided for reverse induced voltage when the circuit has the reverse induced voltage, so that the reverse induced voltage is prevented from breaking down the MOS transistor Q1.
Generally, the parasitic diode D1 and the MOS transistor Q1 may be packaged together, and the parasitic diode D1 is built in the MOS transistor Q1 to form a whole for use.
In some examples, since the second end of the second voltage dividing resistor R2 is electrically connected to the negative load output terminal 4, the residual voltage of the time-lapse charging module 5 is released when the DC plug is pulled out from the connection socket 1, and the charging capacitor C1 is rapidly discharged, so that the sparking phenomenon generated when the DC plug is reinserted into the connection socket 1 is avoided.
Referring to fig. 4, one end of the filter module 6 is connected to the positive load output terminal 3 and the drain of the MOS transistor Q1, respectively, and the other end of the filter module 6 is connected to the negative load output terminal 4. By additionally arranging the filtering module 6, the filtering of the power supply of the input load is realized, so that the stability of the power supply is ensured. Specifically, the filtering module 6 includes a first coupling filter capacitor C2 and a second coupling filter capacitor C3, and the first coupling filter capacitor C2 and the second coupling filter capacitor C3 utilize the charge-discharge characteristics thereof, so that a stable current is formed after the current passes through the first coupling filter capacitor C2 and the second coupling filter capacitor C3. The first end of the first coupling filter capacitor C2 and the first end of the second coupling filter capacitor C3 are both connected with the positive load output end 3, and the second end of the first coupling filter capacitor C2 and the second end of the second coupling filter capacitor C3 are both connected with the negative load output end 4. The energy storage effect of the first coupling filter capacitor C2 and the second coupling filter capacitor C3 improves the transient current characteristic of the circuit so as to adapt to loads with overlarge transient currents.
Example two
The embodiment of the application discloses a DC socket. The DC outlet includes the charging spark-resistant circuit for the DC outlet as in the previous embodiments. The charging anti-spark circuit is formed by additionally arranging components in the existing circuit based on the DC socket, so that the problem of spark generation when the existing DC plug is inserted into the DC socket is solved, the circuit is safe, simple and reliable, the repeatability is good, and no additional control is needed. It should be noted that the DC socket includes the charging anti-spark circuit in the foregoing embodiment, and the charging anti-spark circuit is not described herein.
The implementation principle of the charging anti-spark circuit for the DC socket and the DC socket is as follows: at the moment when the DC plug is plugged into the DC outlet, there is no charge in the charging capacitor C1, and at this time, the voltage of the charging capacitor C1 is zero, which corresponds to a short circuit. Then, the third pin of the connection socket 1 charges the charging capacitor C1, and as the charging voltage of the charging capacitor C1 increases, the gate voltage of the MOS transistor Q1 gradually decreases until the gate voltage of the MOS transistor Q1 is smaller than a preset value, and then the MOS transistor Q1 is turned on, thereby achieving the purpose of delaying the conduction of the MOS transistor Q1. Because the MOS tube Q1 controls the on-off of the current between the DC socket and the load, the DC socket is electrified after the MOS tube Q1 is conducted. According to the scheme, the switch control module 2 is controlled to conduct in a delayed mode through the charging delay of the delay charging module 5, so that the delay of the DC socket is electrified, electric sparks are easily generated due to large current when the DC plug is inserted into the DC socket, and the safety coefficient of the DC socket is improved. And then the second voltage-dividing resistor R2 is electrically connected with the negative load output end 4, and the residual voltage of the time-delay charging module 5 is released when the DC plug is pulled out from the connecting socket 1, so that spark is avoided when the DC plug is plugged into the connecting socket 1 again. Therefore, the scheme in the application can solve the problem that electric sparks are generated when the existing DC plug is plugged into the DC socket.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. A charging spark-proof circuit for a DC outlet, the DC outlet comprising a connection outlet (1), the connection outlet (1) being provided with a first pin, a second pin and a third pin, the charging spark-proof circuit comprising:
the switch control module (2), the said switch control module (2) is connected between said connecting socket (1) and load electrically, the said switch control module (2) is used for controlling the on-off of the current between said connecting socket (1) and said load;
the positive load output end (3), the positive load output end (3) is electrically connected with the load, and a third pin of the connecting socket (1) is electrically connected with the positive load output end (3) through the switch control module (2);
the negative load output end (4), the negative load output end (4) is electrically connected with the load, and the first pin of the connecting socket (1) and the second pin of the connecting socket (1) are electrically connected with the negative load output end (4);
the time delay charging module (5), time delay charging module (5) establish ties between connecting socket (1) with switch control module (2), the third pin of connecting socket (1) is through time delay charging module (5) with switch control module (2) electric connection, time delay charging module (5) are configured to switch on when DC plug inserts connecting socket (1) time delay connecting socket (1) is last.
2. The charging anti-spark circuit for the DC socket according to claim 1, wherein the switch control module (2) is a MOS tube, a source electrode of the MOS tube is connected with a third pin of the connection socket (1), a grid electrode of the MOS tube is connected with the delay charging module (5), and a drain electrode of the MOS tube is connected with the positive load output end (3).
3. A charging anti-spark circuit for a DC outlet according to claim 2, characterized in that the delay charging module (5) comprises a charging capacitor, a first voltage dividing resistor and a second voltage dividing resistor, the first end of the charging capacitor is connected with the third pin of the connection outlet (1) and the source of the MOS transistor respectively, the second end of the charging capacitor is connected with the gate of the MOS transistor, the first end of the first voltage dividing resistor is connected with the third pin of the connection outlet (1) and the source of the MOS transistor respectively, the second end of the first voltage dividing resistor is connected with the first end of the second voltage dividing resistor and the gate of the MOS transistor respectively, the second end of the second voltage dividing resistor is electrically connected with the negative load output (4), and the second voltage dividing resistor is configured to release the residual voltage of the delay charging module (5) when the DC plug is pulled out from the connection outlet (1).
4. The charging spark-prevention circuit for a DC outlet of claim 2, further comprising: the MOS transistor comprises a filtering module (6), wherein one end of the filtering module (6) is connected with the positive load output end (3) and the drain electrode of the MOS transistor respectively, and the other end of the filtering module (6) is connected with the negative load output end (4).
5. The charging spark prevention circuit for a DC outlet according to claim 4, wherein the filter module (6) comprises a first coupling filter capacitor and a second coupling filter capacitor, the first end of the first coupling filter capacitor and the first end of the second coupling filter capacitor are both connected to the positive load output terminal (3), and the second end of the first coupling filter capacitor and the second end of the second coupling filter capacitor are both connected to the negative load output terminal (4).
6. A charging anti-spark circuit for a DC outlet according to claim 3, characterized in that the delay time of the delayed conduction of the MOS transistor is determined by the capacitance value of the charging capacitor in the delayed charging module (5), the resistance value of the first voltage dividing resistor and the resistance value of the second voltage dividing resistor.
7. The charging anti-spark circuit for a DC outlet of claim 2, wherein the MOS transistor is a PMOS power switch transistor.
8. The charging anti-spark circuit for a DC outlet according to claim 2, wherein a parasitic diode is disposed on the MOS transistor, and two ends of the parasitic diode are connected to a source of the MOS transistor and a drain of the MOS transistor, respectively.
9. A DC outlet comprising a charging spark-protection circuit for a DC outlet according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311844886.3A CN117673838A (en) | 2023-12-29 | 2023-12-29 | A electric spark circuit and DC socket are prevented in charging for DC socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311844886.3A CN117673838A (en) | 2023-12-29 | 2023-12-29 | A electric spark circuit and DC socket are prevented in charging for DC socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117673838A true CN117673838A (en) | 2024-03-08 |
Family
ID=90086432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311844886.3A Pending CN117673838A (en) | 2023-12-29 | 2023-12-29 | A electric spark circuit and DC socket are prevented in charging for DC socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117673838A (en) |
-
2023
- 2023-12-29 CN CN202311844886.3A patent/CN117673838A/en active Pending
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