CN213342045U - Alternating current output parallel control circuit of mobile power supply - Google Patents
Alternating current output parallel control circuit of mobile power supply Download PDFInfo
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- CN213342045U CN213342045U CN202022511951.9U CN202022511951U CN213342045U CN 213342045 U CN213342045 U CN 213342045U CN 202022511951 U CN202022511951 U CN 202022511951U CN 213342045 U CN213342045 U CN 213342045U
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Abstract
The utility model discloses a portable power source's alternating current output parallel control circuit, including two portable power sources and doubling line, portable power source includes sine wave drive signal production unit, master slaver selection circuit, the doubling interface, dc-to-ac output port, the host computer end connector of doubling line and from the end connector be used for respectively with two portable power source's doubling interface connection, master slaver selection circuit is used for when the doubling interface connects the host computer end connector, transmit the sine wave drive signal of sine wave drive signal production unit for the inverter all the way, another way transmits for the doubling interface and through the doubling line transmission give the doubling interface of following the end connector connection; when the parallel machine interface is connected with the slave end connector, the sine wave driving signal generating unit is disconnected from the sine wave driving signal provided by the inverter, and the sine wave driving signal input by the parallel machine interface is transmitted to the inverter; the output end of the inverter is connected with the alternating current output port, and the alternating current output ports of the two mobile power supplies are connected in parallel through power lines.
Description
Technical Field
The utility model belongs to the technical field of portable power source, specifically relate to a portable power source's alternating current output parallel control circuit.
Background
The portable power supply can be carried about, can store electric energy, can supply power for electric equipment, and is particularly suitable for occasions without external power supply, such as outdoor activities and the like. The main components of the device comprise: a battery for electrical energy storage, circuitry to stabilize the output voltage (including a dc-dc converter and/or inverter circuitry), and a controller.
In the use process of the mobile power supply, the situation that the alternating current output power of a single mobile power supply is insufficient or the energy of a battery is insufficient is often encountered, at this time, if the alternating current outputs of two mobile power supplies can be connected in parallel to be practical, the problem can be solved well, but the existing mobile power supplies are not provided with an alternating current output parallel control circuit, if the alternating current output ends of the two mobile power supplies are simply connected in parallel by adopting power lines, the inverters of the two mobile power supplies are driven to work by respective sine wave driving signals, so that the alternating current outputs cannot be strictly synchronized, and the output efficiency and the use effect are influenced.
Disclosure of Invention
An object of the utility model is to provide a portable power source's alternating current output parallel control circuit is used for solving the technical problem that above-mentioned exists.
In order to achieve the above object, the utility model adopts the following technical scheme: the alternating current output parallel control circuit of the mobile power supply comprises two mobile power supplies and a parallel machine line, wherein the mobile power supply comprises a sine wave driving signal generating unit, a master-slave machine selection circuit, a parallel machine interface, an inverter and an alternating current output port, the parallel machine line comprises a master machine end connector and a slave machine end connector, the master machine end connector and the slave machine end connector are respectively used for being connected with parallel machine interfaces of the two mobile power supplies, the master-slave machine selection circuit is used for transmitting one path of sine wave driving signal of the sine wave driving signal generating unit to the inverter when the parallel machine interface is connected with the master machine end connector, and transmitting the other path of sine wave driving signal to the parallel machine interface and transmitting the sine wave driving signal to the parallel machine interface through the; when the parallel machine interface is connected with the slave end connector, the sine wave driving signal generating unit is disconnected to provide a sine wave driving signal for the inverter, and the sine wave driving signal input by the parallel machine interface is transmitted to the inverter; the output end of the inverter is connected with the alternating current output port, and the alternating current output ports of the two mobile power supplies are connected in parallel through power lines.
Furthermore, the master-slave machine selection circuit comprises a first switch circuit and an identification drive circuit, wherein the input end of the first switch circuit is connected with the output end of the sine wave drive signal generation unit, the output end of the first switch circuit is respectively connected with the parallel machine interface and the control end of the inverter, the parallel machine interface is connected with the control end of the inverter, and the identification drive circuit is used for identifying whether the parallel machine interface is connected with a master machine end connector or a slave machine end connector and correspondingly driving the first switch circuit to be switched on and off.
Furthermore, the first switch circuit is implemented by an analog switch with a model number of CD 4066.
Furthermore, the identification driving circuit is realized by adopting a triode.
Furthermore, the master-slave machine selection circuit further comprises a second switch circuit and a switch driving circuit, the output end of the first switch circuit and the control end of the inverter are respectively connected with the parallel machine interface through the second switch circuit, and the switch driving circuit is used for driving the second switch circuit to be conducted when the parallel machine interface is connected with the master machine end connector or the slave machine end connector.
Furthermore, the second switch circuit is implemented by an analog switch with a model number of CD 4066.
Further, the switch driving circuit is implemented by using a triode.
Further, the sine wave driving signal generating unit is realized by adopting a chip with the model EG 8010.
The utility model has the advantages of:
the utility model discloses can realize two portable power source's the parallelly connected output of interchange conveniently, and two portable power source's interchange output is strict synchronous to improved interchange output efficiency, simple structure, it is simple and convenient to use.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of an embodiment of the present invention;
fig. 2 is a circuit structure diagram of a parallel machine line according to an embodiment of the present invention;
fig. 3 is a partial circuit diagram of a mobile power supply according to an embodiment of the present invention.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1, an ac output parallel control circuit of a mobile power supply comprises two mobile power supplies 1 and a parallel line 2, the mobile power supply 1 comprises a sine wave driving signal generating unit 11, a master-slave selecting circuit 12, a parallel interface 13, an inverter 14 and an ac output port 15, the parallel machine line 2 comprises a host end connector 21 and a slave end connector 22, the host end connector 21 and the slave end connector 22 are respectively used for being connected with the parallel machine interface 13 of the two mobile power supplies 1, the master-slave machine selection circuit 12 is used for selecting the parallel machine interface 13 of the mobile power supplies 1 when the host end connector 21 is connected with the master machine interface 13, one path of the sine wave driving signal generating unit 11 of the mobile power supply is transmitted to the inverter 14 of the mobile power supply, and the other path of the sine wave driving signal is transmitted to the parallel machine interface 13 of the mobile power supply and is transmitted to the parallel machine interface 13 connected with the slave end connector 22 (namely the parallel machine interface 13 of the other mobile power supply 1) through the parallel machine line 2; when the parallel operation interface 13 of the mobile power supply 1 is connected with the slave end connector 22, the sine wave driving signal generating unit 11 of the mobile power supply is disconnected to provide a sine wave driving signal for the inverter 14 of the mobile power supply, and the sine wave driving signal input by the parallel operation interface 13 is transmitted to the inverter 14 of the mobile power supply; the output end of the inverter 14 is connected with an alternating current output port 15, and the alternating current output ports 15 of the two mobile power supplies 1 are arranged in parallel through power lines.
Specifically, the master-slave selection circuit 12 includes a first switch circuit and an identification drive circuit, an input end of the first switch circuit is connected to an output end of the sine wave drive signal generation unit 11, an output end of the first switch circuit is respectively connected to a control end of the parallel machine interface 13 and a control end of the inverter 14, the parallel machine interface 13 is connected to the control end of the inverter 14, and the identification drive circuit is configured to identify whether the parallel machine interface 13 is connected to the master machine end connector 21 or the slave machine end connector 22, and correspondingly drive the first switch circuit to be turned on or off.
Preferably, in this embodiment, the first switch circuit is implemented by an analog switch U11 with a model number of CD4066, and the specific circuit structure is shown in fig. 3, which is not detailed, wherein the pins S1, S2, S3 and S4 are used for connecting the output terminal of the sine wave driving signal generating unit 11, and the pins S1-2, S2-2, S3-2 and S4-2 are used for connecting the inverter 14. The first switch circuit has a simple circuit structure and is easy to implement, but the first switch circuit is not limited to this, and in other embodiments, the first switch circuit can also be implemented by other existing switch circuits.
The identification driving circuit is implemented by using transistors, including a PNP transistor Q16 and an NPN transistor Q15, and the specific circuit structure is shown in fig. 3 in detail, which is not limited to that, the circuit structure is simple, and the cost is low, but in other embodiments, other switching tubes may be implemented. The base of NPN transistor Q15 is connected to pin 7 of parallel interface 13, and pin 5 of parallel interface 13 is connected to ground.
In this specific embodiment, the parallel operation line 2 has a structure as shown in fig. 2, the master end connector 21 and the slave end connector 22 are connected through a signal line, each of the master end connector 21 and the slave end connector 22 has 8 pins, the 7 th pin and the 5 th pin of the master end connector 21 are connected together, the 7 th pin and the 5 th pin of the slave end connector 22 are separated, and the 6 th pin and the 8 th pin of the master end connector 21 and the slave end connector 22 are connected together. However, the present invention is not limited to this, and in other embodiments, the doubling line 2 may be implemented by using other structures.
Further, in this embodiment, the master-slave selection circuit 12 further includes a second switch circuit and a switch driving circuit, an output end of the first switch circuit and a control end of the inverter 14 are respectively connected to the parallel machine interface 13 through the second switch circuit, and the switch driving circuit is configured to drive the second switch circuit to be turned on when the parallel machine interface 13 is connected to the master machine end connector 21 or the slave machine end connector 22. By arranging the second switch circuit and the switch driving circuit, the safety and the reliability are further improved, and the condition that the parallel operation interface 13 also has signal output when the parallel operation is not carried out is avoided.
In this embodiment, the second switch circuit is implemented by an analog switch U6 of model CD4066, and the specific circuit structure is shown in fig. 3, which is not limited to that, the second switch circuit is simple in circuit structure and easy to implement, but in other embodiments, other existing switch circuits may also be implemented.
The switch driving circuit is implemented by using transistors, including a PNP transistor Q18 and an NPN transistor Q17, and the specific circuit structure is shown in fig. 3 in detail, which is not limited to that, the circuit structure is simple, and the cost is low. The base of NPN triode Q17 is connected to pin 6 of parallel interface 13, pin 8 of parallel interface 13 is connected to power VCC, and pin 5 of parallel interface 13 is grounded.
In this embodiment, the sine wave driving signal generating unit 11 is implemented by using a chip with a model EG8010, but is not limited thereto, and in other embodiments, the sine wave driving signal generating unit may also be implemented by using another existing chip capable of generating a sine wave driving signal.
The inverter 14 is a conventional inverter of a portable power source, and the specific structure can be referred to the prior art, which can be easily implemented by those skilled in the art and will not be described in detail.
When two mobile power supplies 1 need to be connected in parallel, a host end connector 21 and a slave end connector 22 of a parallel connection line 2 are respectively plugged into parallel connection interfaces 13 of the two mobile power supplies 1, alternating current output ports 15 of the two mobile power supplies 1 are arranged in parallel through power lines, so that for the mobile power supply 1 (which is a mobile power supply host) connected with the host end connector 21, a base electrode of an NPN triode Q17 of a host-slave selection circuit 12 of the mobile power supply is connected with a power VCC, the NPN triodes Q15 and Q17 and PNP triodes Q16 and Q18 work, analog switches U6 and U11 are both conducted, and sine wave driving signals generated by a sine wave driving signal generating unit 11 of the mobile power supply are respectively transmitted to an inverter 14 of the mobile power supply and to the parallel connection interface 13 of the mobile power supply (called as a mobile power supply slave) through the parallel connection interface 13 of the mobile power supply and the parallel; for the mobile power supply slave, the parallel machine interface 13 is connected with the slave end connector 22, the base electrode of the NPN triode Q15 of the master-slave machine selection circuit 12 is pulled to the ground, the NPN triode Q15 and the PNP triode Q16 do not work, the analog switch U11 is disconnected, thereby cutting off the sine wave driving signal generated by the sine wave driving signal generating unit 11 of the mobile power supply and providing the sine wave driving signal to the inverter 14 of the mobile power supply, the NPN triode Q17 and the PNP triode Q18 work, the analog switch U6 is conducted, the sine wave driving signal transmitted by the mobile power supply host is transmitted to the inverter 14 of the mobile power supply to control the inverter to carry out inversion work, the alternating current output by two mobile power supplies 1 can be obtained at the alternating current output port 15 of any one mobile power supply 1, and the sine wave driving signals of the two mobile power supplies 1 are generated by the mobile power supply host, so that the sine wave driving signals are strictly synchronous, and the alternating current output efficiency is improved.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a portable power source's alternating current output parallel control circuit which characterized in that: the mobile power supply comprises a sine wave driving signal generating unit, a master-slave machine selection circuit, a parallel machine interface, an inverter and an alternating current output port, the parallel machine line comprises a master machine end connector and a slave machine end connector, the master machine end connector and the slave machine end connector are respectively used for being connected with the parallel machine interface of the two mobile power supplies, and the master-slave machine selection circuit is used for transmitting one path of the sine wave driving signal generating unit to the inverter when the parallel machine interface is connected with the master machine end connector, and transmitting the other path of the sine wave driving signal generating unit to the parallel machine interface and transmitting the sine wave driving signal to the parallel machine interface connected with the; when the parallel machine interface is connected with the slave end connector, the sine wave driving signal generating unit is disconnected to provide a sine wave driving signal for the inverter, and the sine wave driving signal input by the parallel machine interface is transmitted to the inverter; the output end of the inverter is connected with the alternating current output port, and the alternating current output ports of the two mobile power supplies are connected in parallel through power lines.
2. The ac output parallel control circuit of the mobile power supply according to claim 1, wherein: the master-slave machine selection circuit comprises a first switch circuit and an identification drive circuit, wherein the input end of the first switch circuit is connected with the output end of the sine wave drive signal generation unit, the output end of the first switch circuit is respectively connected with the parallel machine interface and the control end of the inverter, the parallel machine interface is connected with the control end of the inverter, and the identification drive circuit is used for identifying whether the parallel machine interface is connected with a master machine end connector or a slave machine end connector and correspondingly driving the first switch circuit to be switched on and off.
3. The ac output parallel control circuit of the mobile power supply according to claim 2, wherein: the first switching circuit is implemented by an analog switch with the model number of CD 4066.
4. The ac output parallel control circuit of the mobile power supply according to claim 2, wherein: the identification driving circuit is realized by adopting a triode.
5. The ac output parallel control circuit of the mobile power supply according to claim 2, wherein: the master-slave machine selection circuit further comprises a second switch circuit and a switch driving circuit, the output end of the first switch circuit and the control end of the inverter are respectively connected with the parallel machine interface through the second switch circuit, and the switch driving circuit is used for driving the second switch circuit to be conducted when the parallel machine interface is connected with the master machine end connector or the slave machine end connector.
6. The AC output parallel control circuit of the mobile power supply as claimed in claim 5, wherein: the second switching circuit is implemented by an analog switch with the model number of CD 4066.
7. The AC output parallel control circuit of the mobile power supply as claimed in claim 5, wherein: the switch driving circuit is realized by adopting a triode.
8. The ac output parallel control circuit of the mobile power supply according to claim 1, wherein: the sine wave driving signal generating unit is realized by adopting a chip with the model number EG 8010.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022511951.9U CN213342045U (en) | 2020-11-04 | 2020-11-04 | Alternating current output parallel control circuit of mobile power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022511951.9U CN213342045U (en) | 2020-11-04 | 2020-11-04 | Alternating current output parallel control circuit of mobile power supply |
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| Publication Number | Publication Date |
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| CN213342045U true CN213342045U (en) | 2021-06-01 |
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| CN202022511951.9U Active CN213342045U (en) | 2020-11-04 | 2020-11-04 | Alternating current output parallel control circuit of mobile power supply |
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