CN108767837B - Power connection method, power connector anti-sparking circuit and power with circuit - Google Patents
Power connection method, power connector anti-sparking circuit and power with circuit Download PDFInfo
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- CN108767837B CN108767837B CN201810950155.XA CN201810950155A CN108767837B CN 108767837 B CN108767837 B CN 108767837B CN 201810950155 A CN201810950155 A CN 201810950155A CN 108767837 B CN108767837 B CN 108767837B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a power connection method, a power connector anti-sparking circuit and a power with the circuit, wherein the power connection method comprises the following steps: before the first electrode end and the second electrode end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load, the first electrode end and the anti-sparking connection end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load, the anti-sparking connection end is coupled to the second electrode side of the power supply, and the first electrode end and the second electrode end are respectively and electrically connected with the first electrode and the second electrode of the power supply; the power supply charges a load capacitor of the load end through a circuit coupled between the second electrode of the power supply and the anti-sparking connection end, and when the first electrode end and the second electrode end of the power supply are electrically connected with the first electrode end and the second electrode end of the load, the anti-sparking connection end is in short circuit connection with the power supply and the second electrode end of the load, and the circuit coupled between the second electrode of the power supply and the anti-sparking connection end is bypassed.
Description
Technical Field
The application relates to a power supply connection method, a power connector anti-sparking circuit and a power supply with the same.
Background
The existing load equipment is often accompanied with a large load capacitor at the power input end, when the power connector is plugged and unplugged, the existing connector between the load and the power supply cannot effectively prevent the phenomenon of 'sparking' at the moment of plugging and unplugging the power connector, the connector is easy to ablate, the service life of the connector is reduced, and even the bad consequences such as equipment damage caused by bad contact of the connector occur.
Disclosure of Invention
One of the purposes of the embodiments of the present application is to provide a power connection method, a power connector anti-sparking circuit and a power supply with the circuit, which can prevent or reduce the sparking phenomenon generated when the power is connected with a load.
In a first aspect, an embodiment of the present application provides a power connection method, including:
before the first electrode end and the second electrode end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load, the first electrode end and the anti-sparking connection end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load,
the anti-sparking connection terminal is coupled to a second electrode side of the power supply,
the first electrode end and the second electrode end are respectively and electrically connected with a first electrode and a second electrode of the power supply, one of the first electrode and the second electrode is a positive electrode, and the other is a negative electrode;
the power supply charges a load capacitance of a load terminal through a circuit coupled between a second electrode of the power supply and the anti-sparking connection terminal,
when the first electrode terminal and the second electrode terminal of the power supply are electrically connected with the first electrode terminal and the second electrode terminal of the load, the anti-sparking connection terminal is in short circuit connection with the power supply and the second electrode terminal of the load, and a circuit coupled between the second electrode of the power supply and the anti-sparking connection terminal is bypassed.
Optionally, after the first electrode terminal and the anti-sparking connection terminal of the power supply are respectively electrically connected with the first electrode terminal and the second electrode terminal of the load, a predetermined first time period is further delayed, and then the power supply charges the load capacitor,
the first time is smaller than a time difference between the time of electrical connection between the second electrode terminal of the power supply and the second electrode terminal of the load and the time of electrical connection between the anti-ignition connection terminal and the second electrode terminal of the load.
Optionally, after the duration of charging the load capacitor of the load terminal by the power supply is equal to or greater than a predetermined second duration, the method further includes:
the anti-sparking connection is shorted to a second electrode terminal of the power supply such that a circuit coupled between the anti-sparking connection and the second electrode terminal of the power supply is bypassed.
Optionally, the power source is a rechargeable power source.
Optionally, the rechargeable power source is a lithium ion battery.
Optionally, the load is a charger for charging the power supply.
Optionally, the load is a consumer.
In a second aspect, the power connector of the present application includes a first electrode terminal and a second electrode terminal, the first electrode terminal and the second electrode terminal are respectively electrically connected with a first electrode and a second electrode of the power body, one of the first electrode and the second electrode is an anode, the other is a cathode,
the power connector anti-sparking circuit comprises:
the anti-sparking connection terminal is coupled to the second electrode side of the power supply, the anti-sparking connection terminal is longer than the second electrode terminal of the power supply connector, so that when the power supply is connected with the power supply connector of the load for insertion, the electrical connection time of the anti-sparking connection terminal and the second electrode terminal of the load is earlier than the electrical contact connection time of the second electrode terminal of the power supply connector and the second electrode terminal of the load,
the voltage stabilizing circuit has an input end connected to the voltage between the anti-ignition connecting end and the second electrode of the power supply and an output end electrically connected to the input end of the first driving circuit for driving the first switching circuit,
the output end of the first driving circuit is electrically connected with the control end of the first switching circuit;
the first switch circuit is coupled between the second electrode of the power supply and the ignition-proof connecting end, when the first electrode end and the ignition-proof connecting end of the power supply are respectively electrically connected with the first electrode end and the second electrode end of the load, the first switch circuit is in a conducting state, the power supply charges a load capacitor of the load end through the first switch circuit, and when the second electrode end of the power supply is electrically connected with the second electrode end of the load, the ignition-proof connecting end is in short circuit with the second electrode end of the power supply, the second electrode and the second electrode of the load.
Optionally, the method further comprises:
the first delay circuit is electrically connected between the output end of the voltage stabilizing module and the input end of the first driving circuit.
Optionally, the method further comprises:
the first switching circuit includes: and the control end of the first power switch tube is electrically connected with the output end of the first driving circuit, and the two switch ends are respectively coupled with the anti-ignition connecting end and the second electrode of the power supply.
Optionally, the first electrode is a positive electrode, the second electrode is a negative electrode,
the first power switch tube is an N-channel MOS switch tube, the grid electrode of the first power switch tube is electrically connected with the output end of the first driving circuit, the source electrode is coupled with the negative electrode of the power supply, and the drain electrode is coupled with the positive electrode of the power supply.
Optionally, a second switch circuit is electrically connected between the anti-sparking connection end and the second electrode of the power supply, and when the charging time of the power supply for charging the load capacitor is equal to or greater than a preset second time, the second switch circuit is in a conducting state, and the anti-sparking connection end is in short circuit connection with the second electrode of the power supply and the second electrode end;
and the second driving circuit is used for driving the second switching circuit to be turned on or turned off.
Optionally, the second switching circuit includes: and a second power switching tube.
Optionally, the first electrode is a positive electrode, the second electrode is a negative electrode,
the second power switch tube is an N-channel MOS switch tube, the grid electrode of the second power switch tube is electrically connected with the output end of the second driving circuit, the source electrode of the second power switch tube is electrically connected with the negative electrode of the power supply, and the drain electrode of the second power switch tube is electrically connected with the anti-sparking connecting end.
Optionally, the second switching circuit includes: a circuit composed of at least two power switching tubes connected in parallel,
the control end of each power switch tube is electrically connected with the output end of the second driving circuit, and the two switch ends of each power switch tube are respectively electrically connected with the anti-ignition connecting end and the second electrode of the power supply.
Optionally, the second switching circuit includes: the circuit is composed of at least two second power switching tubes which are connected in series,
the control end of each second power switch tube is electrically connected with the output end of the second driving circuit.
Optionally, a current limiting resistor is further connected in series between the anti-sparking connection terminal and the first switch circuit.
In a third aspect, an embodiment of the present application provides a power supply, including:
a power supply body;
the power connector comprises a first electrode end and a second electrode end, wherein the first electrode end and the second electrode end are respectively and electrically connected with a first electrode and a second electrode of the power body, one of the first electrode and the second electrode is a positive electrode, and the other of the first electrode and the second electrode is a negative electrode;
the power connector anti-ignition circuit of any one of the above;
the length of the anti-sparking circuit connecting end is longer than that of the second electrode end of the power connector, and the length of the first electrode end is longer than that of the second electrode end of the power connector, so that when the power supply is connected with the power connector of the load, the electric connection time between the anti-sparking connecting end and the second electrode end of the load is longer than that between the second electrode end of the power connector and the second electrode end of the load.
Optionally, the power supply body is a rechargeable battery.
Optionally, the power supply body is a lithium ion battery.
Optionally, the power supply body is a lithium ion battery.
Therefore, by adopting the technical scheme of the embodiment, before the power supply, the first electrode end and the second electrode end of the load are electrically connected, the anti-sparking connection end coupled to the second electrode of the power supply is electrically connected with the second electrode end of the load before the second electrode end of the power supply, so that the power supply charges the load capacitor of the load for a certain time, the voltage difference between the power supply electrically connected later and the second electrode end of the load is reduced, and the sparking phenomenon is prevented or reduced;
in addition, by adopting the technical scheme of the embodiment, when the first electrode end and the second electrode end of the power supply are electrically connected with the first electrode end and the second electrode end of the load, the anti-sparking connection end is in short circuit connection with the second electrode end of the power supply, and a circuit coupled between the second electrode end of the power supply and the anti-sparking connection end is bypassed, namely, when the power supply works normally, no current exists in the circuit coupled between the second electrode end of the power supply and the anti-sparking connection end, and the circuit is in a zero-power consumption state, so that the power consumption of the power supply is reduced.
Drawings
The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification.
Fig. 1 is a schematic flow chart of a method for connecting a power supply with an external circuit or device according to embodiment 1 of the present application;
fig. 2 is a schematic diagram of an application principle of a power connector anti-ignition circuit provided in embodiment 2;
fig. 3 is a schematic diagram of an application principle of another power connector anti-ignition circuit provided in embodiment 2;
fig. 4 is a schematic diagram of an application principle of a further power connector anti-ignition circuit according to embodiment 2;
fig. 5 is a schematic diagram of an application principle of a further power connector anti-ignition circuit provided in embodiment 2;
fig. 6 is a schematic diagram of an application principle of a power connector anti-ignition circuit provided in embodiment 3;
fig. 7 is a schematic diagram of an application principle of another power connector anti-ignition circuit provided in embodiment 3;
fig. 8 is a schematic diagram of an application principle of a further power connector anti-ignition circuit provided in embodiment 3;
fig. 9 is a schematic diagram of an application principle of another power connector anti-ignition circuit provided in embodiment 3.
Detailed Description
The present application will now be described in detail with reference to the drawings and the specific embodiments thereof, wherein the exemplary embodiments and descriptions of the present application are provided for illustration of the application and are not intended to be limiting.
Example 1
The present embodiment provides a method for connecting a power source, which may be, but is not limited to, a rechargeable battery, such as a lithium ion battery or a secondary battery, to an external circuit or device. The lithium ion battery can be a single battery or a lithium ion battery pack formed by a plurality of single batteries.
The power supply is provided with a first electrode end and a second electrode end which are used for being externally connected with an external circuit or equipment and used for outputting/inputting current, wherein the first electrode end and the second electrode end are respectively and electrically connected with the first electrode and the second electrode of the power supply, one of the first electrode and the second electrode is a positive electrode, and the other is a negative electrode.
In this embodiment, a power supply body of a power supply is a lithium ion battery as an illustration, and an application principle of this embodiment is schematically described.
When the external circuit or equipment is electric equipment, the power supply outputs current to the electric equipment through the first electrode terminal and the second electrode terminal; when the external circuit or equipment is a charger, the power supply is connected with external current to charge the power supply. In this embodiment, for convenience of description, circuits or devices electrically connected to the first electrode terminal and the second electrical connection terminal of the power supply of this embodiment are hereinafter referred to as loads, and capacitances (generally equivalent capacitances) between the positive and negative electrodes of the loads are referred to as load capacitances.
Referring to fig. 1, the power connection method of the present embodiment mainly includes:
step 101: the first electrode end and the anti-sparking connection end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load.
In this embodiment, the second electrode of the power supply is further coupled with an anti-sparking connection end, so that when the power supply is connected with the power supply connector of the load, the anti-sparking connection end of this embodiment is electrically connected with the second electrode of the external load before the second electrode of the power supply, and the first electrode of the power supply and the anti-sparking connection end are electrically connected with the first electrode and the second electrode of the load before the first electrode and the second electrode of the power supply.
Step 102: the power supply charges a load capacitance of the load terminal through a circuit coupled between the second electrode terminal and the anti-sparking connection terminal of the power supply.
When the first electrode end of the power supply and the anti-sparking connection end are electrically connected with the first electrode end and the second electrode end of the load, the first electrode end of the power supply, the load, a circuit coupled between the second electrode of the power supply and the anti-sparking connection end and the second electrode of the power supply form a loop, the power supply charges a load capacitor through the circuit coupled between the second electrode of the power supply and the anti-sparking connection end, so that the instant pressure difference at the two ends of the load is gradually reduced, the voltage difference between the two electrode ends when the subsequent power supply is connected with the second electrode end of the load in a plugging mode is reduced, and the phenomenon of sparking caused by the fact that the pressure difference is overlarge at the moment when the connection end is connected with the connection end is prevented or reduced.
As an illustration of the present embodiment, but not by way of limitation, the present embodiment also makes the following designs:
after the first electrode end and the anti-sparking connection end of the power supply are electrically connected with the first electrode end and the second electrode end of the load, the first time length T1 is further delayed, and then a circuit coupled between the anti-sparking connection end and the second electrode of the power supply is conducted, so that the power supply charges a load capacitor through a circuit coupled between the anti-sparking connection end and the second electrode of the power supply, wherein the time for the first electrode end and the anti-sparking connection end of the power supply to be electrically connected with the first electrode end and the second electrode end of the load is set to be T0 earlier than the time for the first electrode end and the second electrode end of the power supply to be electrically connected with the first electrode end and the second electrode end of the load, and the first time length T1 of the first time delay circuit is smaller than T0.
By adopting the technical scheme of the first time length T1 of the time delay of the embodiment, the charging of the load capacitor after the stable connection of the connector is ensured, and the unstable current input to the load capacitor by the circuit at the moment of the contact of the connector is avoided.
Step 103: when the first electrode end and the second electrode end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load, the power supply and the load form a circuit loop, so that the power supply supplies power to the outside or introduces external current to charge the power supply.
In this embodiment, when the first electrode terminal and the second electrode terminal of the power supply are electrically connected to the first electrode terminal and the second electrode terminal of the load, respectively, the anti-sparking connection terminal is commonly connected to the second electrode of the power supply, the second electrode terminal, and the second electrode terminal of the load in a short circuit, and at this time, a circuit coupled between the second electrode terminal of the power supply and the anti-sparking connection terminal is bypassed.
Therefore, by adopting the technical scheme of the embodiment, before the power supply, the first electrode end and the second electrode end of the load are electrically connected, the anti-sparking connection end coupled to the second electrode of the power supply is electrically connected with the second electrode end of the load before the second electrode end of the power supply, so that the power supply charges the load capacitor of the load for a certain time, the voltage difference between the power supply electrically connected later and the second electrode end of the load is reduced, and the sparking phenomenon is prevented or reduced;
in addition, by adopting the technical scheme of the embodiment, when the first electrode end and the second electrode end of the power supply are electrically connected with the first electrode end and the second electrode end of the load, the anti-sparking connection end is in short circuit connection with the second electrode end of the power supply, and a circuit coupled between the second electrode end of the power supply and the anti-sparking connection end is bypassed, namely, when the power supply works normally, no current exists in the circuit coupled between the second electrode end of the power supply and the anti-sparking connection end, and the circuit is in a zero-power consumption state, so that the power consumption of the power supply is reduced.
In addition, the present inventors have found that, when a user inserts a power supply terminal of a load while connecting the power supply to the power supply terminal of the load, there is a possibility that the first electrode terminal of the power supply, the first electrode terminal of the anti-ignition connecting terminal, and the second electrode terminal of the power supply are not electrically connected to the first electrode terminal of the load and the second electrode terminal of the load for a long time after the first electrode terminal of the power supply, the anti-ignition connecting terminal, and the first electrode terminal of the power supply are electrically connected to the second electrode terminal of the load, due to an operation error of the user or a problem of the power supply terminal, in order to improve the safety of the power supply and reduce the power consumption thereof when the above-mentioned possible situations occur: the inventor also provides the following preferable technical scheme:
by way of illustration and not limitation, if the charging duration of the power supply for charging the load capacitor of the load terminal through the circuit coupled between the second electrode terminal of the power supply and the anti-sparking connection terminal reaches or exceeds the predetermined second duration T2, the anti-sparking connection terminal is shorted with the second electrode of the power supply, so that the circuit coupled between the anti-sparking connection terminal and the second electrode of the power supply is bypassed, and the circuit coupled between the anti-sparking connection terminal and the second electrode of the power supply is in a zero-power state, so that the power consumption of the power supply can be effectively reduced. Wherein the second time period T2 is set by the designer according to the time of the user's plugging of the connection terminal of the power supply.
Example 2:
referring to fig. 2, the present embodiment provides a power connector anti-sparking circuit coupled to a second electrode side of a power supply.
Specifically, the power connector anti-sparking circuit comprises:
the anti-sparking connection Pin203 is coupled to the second electrode of the power supply, and the terminal length of the anti-sparking connection Pin203 is longer than the terminal length of the second electrode Pin202 of the power supply and is about or equal to the terminal length of the first electrode Pin201 of the power supply, so that when the power supply is connected with the power supply connector of the load, the electrical connection time of the anti-sparking connection Pin203, the first electrode Pin201 of the power supply and the second electrode Pin302 of the load is earlier than the electrical connection time of the second electrode Pin202 of the power supply and the second electrode Pin302 of the load.
The voltage stabilizing circuit 204, the input end of which is connected with the voltage between the anti-ignition connecting end Pin203 and the second electrode of the power supply as input voltage, and the output end of which is electrically connected with the input end of a driving circuit (marked as a first driving circuit 205) for driving the first switch circuit 206 and outputs driving voltage;
the output end of the first driving circuit 205 is electrically connected to the control end of the first switching circuit 206, and is used for driving the first switching circuit 206 to be turned on and off.
The first switch circuit 206 is coupled between the second electrode of the power supply and the ignition-preventing connection terminal Pin203, when the first electrode terminal Pin201 and the ignition-preventing connection terminal Pin203 of the power supply are electrically connected with the first electrode terminal Pin301 and the second electrode terminal Pin302 of the load respectively, the voltage stabilizing circuit 204 has voltage input, the voltage stabilizing circuit 204 outputs a stabilized voltage to the first driving circuit 205 after DC-DC conversion of the input voltage, the first switch circuit 206 is driven to be turned on, and the power supply charges the load capacitor C1 through the first switch circuit 206.
When the user continues to push the power supply to connect with the power supply of the load, until the second electrode terminal Pin202 of the power supply is electrically connected with the second electrode terminal Pin302 of the load, the anti-ignition connection terminal Pin203 is in short-circuit connection with the second electrode terminal Pin202 of the power supply, the second electrode, and the second electrode terminal Pin302 of the load, the first switch circuit 206 connected between the second electrode of the power supply and the anti-ignition connection terminal Pin203 is bypassed by the short-circuit connection circuit, at this time, the input voltage to the voltage stabilizing circuit 204 is equal to 0, the first switch circuit 206 is disconnected, and the power consumption of the circuit is 0.
From the above, the technical scheme of the embodiment has the following advantages:
1. by adopting the technical scheme of the embodiment, before the first electrode terminal Pin201 and the second electrode terminal Pin of the power supply are connected with the load, the anti-sparking connection terminal Pin203 coupled to the second electrode side of the power supply is electrically connected with the second electrode terminal Pin302 of the load before the second electrode terminal Pin202 of the power supply is electrically connected with the second electrode terminal Pin302 of the load, the power supply charges the load capacitor C1 first, and when the second electrode terminal Pin302 of the power supply and the load are connected close to each other, the voltage difference between the two opposite ends is very low or almost equal, so that the sparking phenomenon of the power supply connector at the opposite plugging moment is prevented or reduced;
2. when the first electrode terminal Pin201 and the second electrode terminal Pin of the power supply are respectively and electrically connected with the first electrode terminal Pin301 and the second electrode terminal Pin302 of the load, an anti-ignition circuit coupled between the second electrode of the power supply and the anti-ignition connecting terminal Pin203 is bypassed, the anti-ignition circuit is in a zero power consumption state, no influence is caused on the operation of the power supply, the power consumption is reduced, and the infection to a power supply charge-discharge control circuit during normal operation of the power supply is avoided.
As an illustration of the present embodiment, and not by way of limitation, referring to fig. 3, the first switch circuit 206 of the present embodiment includes: the first power switch Q1 may be, but not limited to, an N-channel MOS transistor, where the anti-sparking connection terminal Pin203 is coupled to a negative electrode side of a power supply (i.e. a second electrode of the power supply) for input, a gate "G" of the first power switch Q1 is electrically connected to an output terminal of the first driving circuit 205, a source "S" is electrically connected to the negative electrode of the power supply, a drain "D" is electrically connected to the anti-sparking connection terminal Pin203, and when a voltage input to the gate "G" of the first power switch is a predetermined positive voltage, the first power switch Q1 is turned on.
In the present embodiment, the N-type MOS transistor is coupled to the negative side of the power supply, but the present application is not limited thereto, and the P-type MOS transistor may be coupled to the positive side of the power supply as an alternative to the first switch circuit 206.
As an illustration of the embodiment, but not limited to, a current limiting resistor may be connected in series between the first switch circuit 206 and the anti-sparking connection terminal Pin203 to adjust the charging current to the load capacitor C1, as shown in fig. 3, and a current limiting resistor R1 may be connected in series between the drain electrode "D" of the first power switch tube and the anti-sparking connection terminal Pin 203. As an illustration of the present embodiment, the current limiting resistor R1 of the present embodiment is implemented by a small resistance resistor, so as to reduce charging energy consumption, and improve charging efficiency of the load capacitor C1, so that the load capacitor C1 is fully charged or fully charged as much as possible in an extremely short time.
Referring to fig. 4, as an illustration of this embodiment, a first delay circuit 401 may be further connected between the output end of the voltage stabilizing circuit 204 and the input end of the first driving circuit 205, where the first delay circuit 401 delays the dc voltage signal output by the voltage stabilizing circuit 204 by a first period of time T1 and outputs the delayed dc voltage signal to the first switch circuit 206, so as to implement that after the anti-sparking connection terminal Pin203 and the second electrode terminal Pin202 of the power supply are electrically connected with the first electrode terminal Pin301 and the second electrode terminal Pin302 of the load, the first switch circuit 206 is turned on after the first period of time T1 is delayed to charge the load capacitor C1, thereby avoiding that an unstable voltage signal caused by jitter at the moment of contact of the electrode terminal is input to the first switch circuit 206 and affecting the service life of the first switch circuit 206.
As an illustration of this embodiment, the time for electrically connecting the first electrode Pin201 and the anti-sparking connection Pin203 of the power supply to the first electrode Pin301 and the second electrode Pin302 of the load is set to be a time T0, and the first time T1< T0 of the first delay circuit 401 is set to be earlier than the time for electrically connecting the first electrode Pin301 and the second electrode Pin302 of the power supply to the first electrode Pin301 and the second electrode Pin302 of the load.
Referring to fig. 5, a diode D1 is further connected in series to the first switch circuit 206 in the present embodiment, a second electrode of the diode D1 is electrically connected to the second electrode Pin202 of the power supply, a first electrode of the diode D1 is electrically connected to the first switch circuit 206, and the diode D1 is configured to avoid reverse current, and the diode D1 may be, but is not limited to, a schottky diode.
Example 3:
referring to fig. 6, the power connector anti-ignition circuit provided in this embodiment is different from embodiment 2 mainly in that:
the anti-sparking circuit of this embodiment further comprises a second switching circuit 601, a second driving circuit 602 for driving the second switching circuit 601.
The second switch circuit 601 is electrically connected between the ignition preventing connection terminal Pin203 and the second electrode of the power supply, when the charging time period for charging the load capacitor C1 by the power supply reaches the predetermined second time period T2, the second drive circuit 602 drives the second switch circuit 601 to be turned on, after the second switch circuit 601 is turned on, the ignition preventing connection terminal Pin203 is in short circuit connection with the second electrode terminal Pin202 of the power supply, the second electrode and the second electrode terminal Pin302 of the load, the first switch circuit 206 connected between the second electrode of the power supply and the ignition preventing connection terminal Pin203 is bypassed by the short circuit connection circuit, at this time, the input voltage input to the voltage stabilizing circuit 204 is equal to 0, the first switch circuit 206 is turned off, and the power consumption of the circuit is 0.
The circuit of this embodiment has the following advantages in addition to the advantages of embodiment 2:
when a user inserts the power connector, the situation that the first electrode terminal Pin201 and the anti-ignition connecting terminal Pin203 of the power supply are electrically connected with the first electrode terminal Pin301 and the second electrode terminal Pin302 of the load and the second electrode terminal Pin202 of the power supply is not electrically connected with the second electrode terminal Pin302 of the load for a long time may occur due to misoperation of the user or failure of the power connector, and at this time, the technical scheme of the embodiment can actively bypass the anti-ignition circuit, stop the circuit work, and is beneficial to reducing energy consumption of the power supply.
Referring to fig. 7, as an illustration of the present embodiment, the second switching circuit 701 of the present embodiment may be implemented by using a power switch tube (denoted as a second power switch tube Q2). The second power switch tube Q2 is realized by an N-channel MOS tube, the grid electrode 'G' of the second power switch tube Q2 is electrically connected with the output end of the second driving circuit 602, the source electrode 'S' is electrically connected with the negative electrode of the power supply, and the drain electrode 'D' is electrically connected with the anti-sparking connection end Pin 203. When the voltage input to the gate "G" of the second power switching transistor Q2 is a positive voltage of a predetermined voltage, the second power switching transistor Q2 is turned on.
Referring to fig. 8, as another illustration of the present embodiment, the second switching circuit 801 of the present embodiment may be implemented by a circuit formed by at least two power switching transistors connected in series, where the control end of each second power switching transistor is electrically connected to the output end of the second driving circuit 602. Referring to fig. 8, similar to fig. 7, an N-channel MOS transistor may be used, where the gate "G" of each MOS transistor is electrically connected to the output terminal of the second driving circuit 602, the source "S" is electrically connected to the negative electrode of the power supply, and the drain "D" is electrically connected to the ignition preventing connection terminal Pin 203.
Referring to fig. 9, as still another illustration of the present embodiment, the second switching circuit 901 of the present embodiment may be implemented by a circuit formed by at least two second power switching transistors connected in parallel, where the control ends of the second power switching transistors are electrically connected to the output end of the second driving circuit 602.
The above-described embodiments do not limit the scope of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present application.
Claims (18)
1. A power connection method, comprising:
the first electrode end and the second electrode end of the power supply are respectively and electrically connected with the first electrode and the second electrode of the power supply, the second electrode of the power supply is also coupled with an anti-ignition connecting end,
before the first electrode end and the second electrode end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load, the first electrode end and the anti-sparking connection end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load, a first switch circuit coupled between the second electrode of the power supply and the anti-sparking connection end is conducted, the power supply charges a load capacitor of the load end through the first switch circuit,
when the charging time of the power supply for charging the load capacitor is equal to or longer than a preset time, a second switch circuit electrically connected between the anti-sparking connection terminal and a second electrode of the power supply is conducted, the anti-sparking connection terminal is in short circuit with the second electrode of the power supply, the second electrode terminal and the second electrode terminal of the load, and a circuit coupled between the second electrode terminal of the power supply and the anti-sparking connection terminal is bypassed;
one of the first electrode and the second electrode is a positive electrode, and the other is a negative electrode.
2. The method for connecting a power source according to claim 1, wherein,
after the first electrode end and the anti-sparking connection end of the power supply are respectively and electrically connected with the first electrode end and the second electrode end of the load, the first time is delayed for a preset first time period, the power supply is further enabled to charge the load capacitor,
the first time length is smaller than a time difference between the time of electric connection between the second electrode end of the power supply and the second electrode end of the load and the time of electric connection between the anti-ignition connecting end and the second electrode end of the load.
3. The method for connecting a power source according to claim 1, wherein,
the power supply is a rechargeable power supply.
4. A power connection method according to claim 3, wherein,
the rechargeable power supply is a lithium ion battery.
5. The method for connecting a power source according to claim 1, wherein,
the load is a charger for charging the power supply.
6. The method for connecting a power source according to claim 1, wherein,
the load is electric equipment.
7. The power connector comprises a first electrode terminal and a second electrode terminal, wherein the first electrode terminal and the second electrode terminal are respectively and electrically connected with a first electrode and a second electrode of a power body, one of the first electrode and the second electrode is an anode, the other is a cathode,
the power connector anti-sparking circuit comprises:
the anti-sparking connection end is coupled to the second electrode side of the power supply body and is longer than the second electrode end of the power supply connector, so that when the power supply connector is connected with a connector of a load in a plugging mode, the electric connection time between the anti-sparking connection end and the second electrode end of the load is longer than the electric contact connection time between the second electrode end of the power supply connector and the second electrode end of the load,
the voltage stabilizing circuit has an input end connected to the voltage between the anti-sparking connection end and the second electrode of the power supply body, an output end electrically connected to the input end of the first driving circuit for driving the first switching circuit,
the output end of the first driving circuit is electrically connected with the control end of the first switching circuit;
the first switch circuit is coupled between the second electrode of the power supply body and the anti-sparking connection end, when the first electrode end and the anti-sparking connection end of the power supply connector are respectively electrically connected with the first electrode end and the second electrode end of the load, the first switch circuit is in a conducting state, the power supply body charges load capacitance of the load end through the first switch circuit, and when the second electrode end of the power supply connector is electrically connected with the second electrode end of the load, the anti-sparking connection end is in short circuit with the second electrode end of the power supply connector, the second electrode of the power supply body and the second electrode end of the load;
the second switch circuit is electrically connected between the anti-sparking connection end and the second electrode of the power supply body, and is in a conducting state when the charging time of the power supply body for charging the load capacitor is equal to or longer than a preset time, and the anti-sparking connection end is in short circuit connection with the second electrode of the power supply body and the second electrode end of the load;
and the second driving circuit is used for driving the second switching circuit to be turned on or turned off.
8. The power connector anti-sparking circuit of claim 7, further comprising:
the first delay circuit is electrically connected between the output end of the voltage stabilizing circuit and the input end of the first driving circuit.
9. The power connector anti-sparking circuit of claim 7, further comprising:
the first switching circuit includes: the control end of the first power switch tube is electrically connected with the output end of the first driving circuit, and the two switch ends are respectively coupled with the anti-ignition connecting end and the second electrode of the power supply body.
10. The power connector anti-sparking circuit, as claimed in claim 9, wherein,
the first electrode is an anode, the second electrode is a cathode,
the first power switch tube is an N-channel MOS switch tube, the grid electrode of the first power switch tube is electrically connected with the output end of the first driving circuit, the source electrode is coupled with the negative electrode of the power supply body, and the drain electrode is coupled with the positive electrode of the power supply body.
11. The power connector anti-sparking circuit as claimed in claim 7, wherein,
the second switching circuit includes: and a second power switching tube.
12. The power connector anti-sparking circuit, as claimed in claim 11, wherein,
the first electrode is an anode, the second electrode is a cathode,
the second power switch tube is an N-channel MOS switch tube, the grid electrode of the second power switch tube is electrically connected with the output end of the second driving circuit, the source electrode of the second power switch tube is electrically connected with the negative electrode of the power supply body, and the drain electrode of the second power switch tube is electrically connected with the anti-sparking connection end.
13. The power connector anti-sparking circuit as claimed in claim 7, wherein,
the second switching circuit includes: a circuit composed of at least two power switching tubes connected in parallel,
the control end of each power switch tube is electrically connected with the output end of the second driving circuit, and the two switch ends of each power switch tube are respectively electrically connected with the anti-ignition connecting end and the second electrode of the power supply body.
14. The power connector anti-sparking circuit as claimed in claim 7, wherein,
the second switching circuit includes: the circuit is composed of at least two second power switching tubes which are connected in series,
the control end of each second power switch tube is electrically connected with the output end of the second driving circuit.
15. A power connector anti-sparking circuit as claimed in any one of claims 7 to 14, wherein,
and a current limiting resistor is connected in series between the anti-sparking connection end and the first switch circuit.
16. A power supply, comprising:
a power supply body;
the power connector comprises a first electrode end and a second electrode end, wherein the first electrode end and the second electrode end are respectively and electrically connected with a first electrode and a second electrode of the power body, one of the first electrode and the second electrode is a positive electrode, and the other of the first electrode and the second electrode is a negative electrode;
a power connector anti-ignition circuit as claimed in any one of claims 7 to 15;
the length of the anti-sparking connection end is longer than that of the second electrode end of the power connector, and the length of the first electrode end is longer than that of the second electrode end of the power connector, so that when the power connector is connected with a connector of a load for insertion, the electric connection time between the anti-sparking connection end and the second electrode end of the load is longer than that between the second electrode end of the power connector and the second electrode end of the load.
17. The power supply of claim 16, wherein the power supply comprises a power supply,
the power supply body is a rechargeable battery.
18. The power supply of claim 17, wherein the power supply comprises a power supply,
the power supply body is a lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950155.XA CN108767837B (en) | 2018-08-20 | 2018-08-20 | Power connection method, power connector anti-sparking circuit and power with circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950155.XA CN108767837B (en) | 2018-08-20 | 2018-08-20 | Power connection method, power connector anti-sparking circuit and power with circuit |
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| CN108767837A CN108767837A (en) | 2018-11-06 |
| CN108767837B true CN108767837B (en) | 2023-10-13 |
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| CN201810950155.XA Active CN108767837B (en) | 2018-08-20 | 2018-08-20 | Power connection method, power connector anti-sparking circuit and power with circuit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113161832B (en) * | 2021-02-20 | 2023-04-11 | 海固科技(苏州)有限公司 | Electric connector and auxiliary connecting device thereof |
| CN113517682B (en) * | 2021-06-24 | 2021-12-17 | 深之蓝(天津)水下智能科技有限公司 | Power supply anti-ignition circuit and underwater propeller |
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| CN108767837A (en) | 2018-11-06 |
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