CN218071102U - Dual-power automatic switching management device and communication equipment with same - Google Patents
Dual-power automatic switching management device and communication equipment with same Download PDFInfo
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- CN218071102U CN218071102U CN202221712509.5U CN202221712509U CN218071102U CN 218071102 U CN218071102 U CN 218071102U CN 202221712509 U CN202221712509 U CN 202221712509U CN 218071102 U CN218071102 U CN 218071102U
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Abstract
The utility model discloses a dual supply automatic switch-over management device and be equipped with device's communication equipment, the utility model discloses a dual supply automatic switch-over management device is including external power supply input of the same kind and self deposit power input of the same kind, the priority is used in the differentiation, the mode that adopts switch switching through the automatic switch-over circuit is automatic to two way access power supplies and carry out automatic switch-over, and set the priority of external power supply input to high priority, automatic external power supply mode of cutting into when two way power supply insert simultaneously, the deposit power will regard as supplementary back-up source to use, automatic switch-over goes into the deposit power supply after external power supply amputates. Thereby realize avoiding the consumer to appear the power failure condition to the accurate switching of dual supply automatic switching device power, and the utility model discloses all components and parts that adopt are domestic components and parts, and the domestic rate reaches hundredth percent, simultaneously the utility model discloses a device design is simple, small in size, convenient to use to the cost of manufacture is low.
Description
Technical Field
The utility model relates to a computer technology field especially relates to a dual supply automatic switch-over management device and be equipped with this dual supply automatic switch-over management device's communication equipment.
Background
When portable communication equipment needs long-time operation, it is very high to the requirement of power supply reliability, if when the sudden power failure condition appears in common external power supply, can lead to communication interruption, so in order to compensate the influence that the power failure caused, need to switch to the reserve power supply of equipment self, supply portable communication equipment uninterrupted duty, but current power switching device can not realize the effective switching of power, and under the untimely condition of power switching, still can cause communication equipment to appear the short-time power failure, thereby influence communication equipment's normal work.
Disclosure of Invention
The utility model provides a dual supply automatic switch-over management device and be equipped with this dual supply automatic switch-over management device's communication equipment to solve the problem that power down appears in the consumer that dual supply automatic switch-over device power switching is not smooth and easy and lead to among the prior art.
In a first aspect, the utility model provides a dual supply automatic switch-over management device that supplies power to portable communication equipment, the device includes: the control circuit, the automatic switching circuit, the battery output circuit and the external power output circuit; the control circuit is used for controlling the battery output circuit or the external power output circuit to enable through the automatic switching circuit in a switch switching mode based on a preset switching principle so as to supply power to the portable communication equipment; the battery output circuit is used for supplying power to the portable communication equipment under the triggering of the automatic switching circuit; and the external power output circuit is used for supplying power to the portable communication equipment under the triggering of the automatic switching circuit.
Optionally, the control circuit is further configured to control the battery output circuit or the external power output circuit to be enabled in a switch-switched mode to supply power to the portable communication device according to a principle that the external power has a higher priority than the battery.
Optionally, the battery output circuit includes a first voltage-dividing resistor R1, a second voltage-dividing resistor R4, a third voltage-dividing resistor R7, a fourth voltage-dividing resistor R9, a first current-limiting resistor R3, a first MOS transistor Q1, a second MOS transistor Q2, a fourth MOS transistor Q4, a fifth MOS transistor Q5, a first diode D1, and a fourth diode D4;
one end of the first voltage-dividing resistor R1 is connected with the battery input anode, the source electrode of the fourth MOS tube Q4, one end of the second voltage-dividing resistor R4 and the drain electrode of the second MOS tube Q2, and the other end is connected with the grid electrode of the fourth MOS tube Q4 and one end of the fourth voltage-dividing resistor R7;
one end of the fourth voltage-dividing resistor R7 is connected with the grid of the fourth MOS transistor Q4 and one end of the first voltage-dividing resistor R1, and the other end is connected with the drain of the fifth MOS transistor Q5;
one end of a second voltage-dividing resistor R4 is connected with the battery input anode, one end of a first voltage-dividing resistor R1, the source electrode of the fourth MOS tube Q4 and the drain electrode of the second MOS tube Q2, and the other end of the second voltage-dividing resistor R4 is connected with one end of a fourth voltage-dividing resistor R9, the drain electrode of the fourth MOS tube Q4, the grid electrode of the second MOS tube Q2 and one end of a first current-limiting resistor R3;
the source electrode of the second MOS tube Q2 is connected with the source electrode of the first MOS tube Q1, the drain electrode of the second MOS tube Q2 is connected with the battery input anode, the source electrode of the fourth MOS tube Q4, one end of the first divider resistor R1 and one end of the second divider resistor R4, and the grid electrode of the second MOS tube Q2 is connected with the second divider resistor R4, one end of the fourth divider resistor R9 and the drain electrode of the fourth MOS tube Q4;
the source electrode of the first MOS tube Q1 is connected with the source electrode of the second MOS tube Q2, the grid electrode of the first MOS tube Q1 is connected with one end of a first current-limiting resistor R3, and the drain electrode of the first MOS tube Q1 is connected with one end of a first diode D1;
the other end of the first diode D1 is connected with a load access end, and the other end of the first diode D1 is connected with a drain electrode of the first MOS tube Q1;
one end of a fourth voltage-dividing resistor R9 is connected with the second voltage-dividing resistor R4, the grid electrode of the second MOS tube Q2, the drain electrode of the fourth MOS tube Q4 and one end of the first current-limiting resistor R3, and the other end is connected with one end of a fourth diode D4;
the other end of the fourth diode D4 is connected with the output end of the control circuit; the drain of the fifth MOS transistor Q5 is connected to one end of the third voltage dividing resistor R7, the source of the fifth MOS transistor Q5 is connected to ground, and the gate of the fifth MOS transistor Q5 is connected to the control output end of the automatic switching circuit.
Optionally, the external power output circuit includes an inductor L1, a third diode D3, a third MOS transistor Q3, a second diode D2, a fifth voltage-dividing resistor R6, a sixth voltage-dividing resistor R10, and a fifth diode D5;
one end of the inductor L1 is connected with the external power input end, and the other end of the inductor L1 is connected with one end of the third diode D3, the emitting electrode of the triode T1, one end of the second current limiting resistor R2, one end of the seventh voltage dividing resistor R5 and one end of the fifth voltage dividing resistor R6;
one end of a third diode D3 is connected with one end of the inductor L1, an emitting electrode of the triode T1, one end of a second current limiting resistor R2, one end of a seventh divider resistor R5 and one end of a fifth divider resistor R6, and the other end of the third diode D3 is connected with a source electrode of a third MOS transistor Q3;
the source electrode of the third MOS transistor Q3 is connected to one end of a third diode D3, the gate electrode of the third MOS transistor Q3 is connected to one end of a fifth voltage-dividing resistor R6 and one end of a sixth voltage-dividing resistor R10, and the drain electrode of the third MOS transistor Q3 is connected to one end of a second diode D2;
one end of the second diode D2 is connected with the drain electrode of the third MOS transistor Q3, and the other end of the second diode D is connected with the load input end;
one end of a fifth voltage-dividing resistor R6 is connected with one end of the inductor L1, one end of a third diode D3, an emitting electrode of the triode T1, one end of a second current-limiting resistor R2 and a seventh voltage-dividing resistor R5, and the other end of the fifth voltage-dividing resistor R6 is connected with a grid electrode of a third MOS transistor Q3 and one end of a second voltage-dividing resistor R10;
one end of a sixth voltage-dividing resistor R10 is connected with the grid of the third MOS transistor Q3 and one end of a fifth voltage-dividing resistor R6, and the other end of the sixth voltage-dividing resistor R is connected with one end of a fifth diode D5; one end of the fifth diode D5 is connected to the sixth voltage-dividing resistor R10, and the other end is connected to the output end of the control circuit.
Optionally, the automatic switching circuit includes a triode T1, a reference voltage source U1, a second current limiting resistor R2, a third current limiting resistor R8, a seventh voltage dividing resistor R5, an eighth voltage dividing resistor R11, a ninth voltage dividing resistor R13, and a tenth voltage dividing resistor R14;
an emitting electrode of the triode T1 is connected with one end of the inductor L1, one end of the third diode D3, one end of the second current limiting resistor R2, one end of the seventh voltage dividing resistor R5 and one end of the fifth voltage dividing resistor R6, a base electrode of the triode T1 is connected with one end of the second current limiting resistor R2 and one end of the third current limiting resistor R8, and a collector electrode of the triode T1 is connected with one end of the eighth voltage dividing resistor R11;
one end of a second current limiting resistor R2 is connected with one end of an inductor L1, one end of a third diode D3, one end of a seventh voltage dividing resistor R5, one end of a fifth voltage dividing resistor R6 and an emitting electrode of the triode T1, and the other end of the second current limiting resistor R2 is connected with a base electrode of the triode T1 and one end of a third current limiting resistor R8;
one end of a third current limiting resistor R8 is connected with one end of the second current limiting resistor R2 and the base electrode of the triode T1, and the other end of the third current limiting resistor R8 is connected with the output end of the reference voltage source U1;
the output end of the reference voltage source U3 is connected with one end of the third current limiting resistor R8, the ground end of the reference voltage source U1 is connected with the ground, and the input end of the reference voltage source U1 is connected with the seventh voltage dividing resistor R5 and the tenth voltage dividing resistor R14;
one end of a seventh voltage-dividing resistor R5 is connected with one end of the inductor L1, one end of the third diode D3, one end of the second current-limiting resistor R2, one end of the fifth voltage-dividing resistor R6 and the emitter of the triode T1, and the other end of the seventh voltage-dividing resistor R5 is connected with one end of a tenth voltage-dividing resistor R14 and the input end of the reference voltage source U1;
one end of the first voltage-dividing resistor R14 is connected with the input end of the reference voltage source U1 and the seventh voltage-dividing resistor R5, and the other end is connected with the ground; one end of the eighth divider resistor R11 is connected with the collector of the triode T1, and the other end of the eighth divider resistor R is connected with the input end of the battery output circuit; one end of the ninth divider resistor R13 is connected to the input end of the battery output circuit, and the other end is connected to ground.
Optionally, the control circuit includes a fourth current limiting resistor R15, a fifth current limiting resistor R12, and a sixth MOS transistor Q6, wherein,
one end of a fourth current limiting resistor R15 is connected with a high level, and the other end of the fourth current limiting resistor R15 is grounded;
one end of a fifth current-limiting resistor R12 is connected with a high level, and the other end of the fifth current-limiting resistor R12 is connected with the grid electrode of a sixth MOS transistor Q6;
the grid electrode of the sixth MOS tube Q6 is connected with one end of the fifth current-limiting resistor R12, the source electrode of the sixth MOS tube Q6 is connected with the ground, and the drain electrode of the sixth MOS tube Q6 is connected with the control input end of the battery output circuit and the control input end of the external power output circuit.
Optionally, the apparatus further comprises peripheral circuitry;
the peripheral circuit is used for supplying power to the control circuit, the battery output circuit and the external power output circuit.
In a second aspect, the present invention provides a portable communication device, wherein any one of the above-mentioned dual power automatic switching management device is provided in the portable communication device.
The utility model discloses beneficial effect as follows:
the utility model discloses a dual supply automatic switch-over management device is including external power supply input all the way and self deposit power supply input all the way, the priority is used in the differentiation, the mode that adopts the switch over through automatic switching circuit carries out automatic switch-over to two way access power automatically, and set up the priority of external power supply input to high priority, automatic external power supply mode of cutting into when two way powers access simultaneously, the deposit power will regard as supplementary back-up source to use, automatic switch-over income deposit power supply after external power supply amputates. Thereby realize avoiding the consumer to appear the power failure condition to the accurate switching of dual supply automatic switching device power, and the utility model discloses all components and parts that adopt are domestic components and parts, and the domestic rate reaches hundredth percent, simultaneously the utility model discloses a device design is simple, small in size, convenient to use to the cost of manufacture is low.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a dual power supply automatic switching management apparatus for supplying power to a portable communication device according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of another dual power supply automatic switching management apparatus for supplying power to a portable communication device according to a first embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The utility model discloses a first embodiment provides a dual supply automatic switch-over management device that supplies power to portable communication equipment, refer to fig. 1, and the device includes: the control circuit, the automatic switching circuit, the battery output circuit and the external power output circuit; the control circuit in the embodiment of the present invention is configured to control enabling of the battery output circuit or the external power output circuit through the automatic switching circuit in a mode of switching by using a switch based on a preset switching principle, so as to supply power to the portable communication device; the battery output circuit is used for supplying power to the portable communication equipment under the triggering of the automatic switching circuit; and the external power output circuit is used for supplying power to the portable communication equipment under the triggering of the automatic switching circuit.
That is to say, the embodiment of the utility model provides an embodiment dual supply automatic switch-over management device is including external power supply input of the same kind and self deposit power input of the same kind, use priority is distinguished, the mode that adopts switch over through the automatic switch-over circuit is automatic to two tunnel access power supplies and carries out automatic switch-over, and set the priority of external power supply input to high priority, automatic external power supply mode that cuts in when two tunnel power supplies insert simultaneously, the reserve power supply will regard as supplementary reserve power supply to use, automatic switch-over goes into the reserve power supply after external power supply excision, thereby realize the accurate switching to dual supply automatic switch-over device power, avoid the consumer to appear the condition of falling the electricity, and the utility model discloses all components and parts that adopt are domestic components and parts, and the domestic rate reaches hundreds, simultaneously the utility model discloses a device design is simple, small in size, convenient to use, and the cost of manufacture is low.
Specifically, the control circuit in the embodiment of the present invention controls the battery output circuit or the external power output circuit enable through the automatic switching circuit according to the principle that the external power priority is higher than the battery, so as to supply power to the portable communication device.
The circuit of each part of the embodiment of the present invention will be explained and explained in detail by a specific example in conjunction with fig. 2:
when the voltage regulator is specifically implemented, the battery output circuit provided by the embodiment of the present invention includes a first voltage-dividing resistor R1, a second voltage-dividing resistor R4, a third voltage-dividing resistor R7, a fourth voltage-dividing resistor R9, a first current-limiting resistor R3, a first MOS transistor Q1, a second MOS transistor Q2, a fourth MOS transistor Q4, a fifth MOS transistor Q5, a first diode D1, and a fourth diode D4;
one end of the first voltage-dividing resistor R1 is connected with the battery input anode, the source electrode of the fourth MOS tube Q4, one end of the second voltage-dividing resistor R4 and the drain electrode of the second MOS tube Q2, and the other end is connected with the grid electrode of the fourth MOS tube Q4 and one end of the fourth voltage-dividing resistor R7;
one end of the fourth voltage-dividing resistor R7 is connected to the gate of the fourth MOS transistor Q4 and one end of the first voltage-dividing resistor R1, and the other end is connected to the drain of the fifth MOS transistor Q5;
one end of a second voltage-dividing resistor R4 is connected with the battery input anode, one end of a first voltage-dividing resistor R1, the source electrode of the fourth MOS tube Q4 and the drain electrode of the second MOS tube Q2, and the other end of the second voltage-dividing resistor R4 is connected with one end of a fourth voltage-dividing resistor R9, the drain electrode of the fourth MOS tube Q4, the grid electrode of the second MOS tube Q2 and one end of a first current-limiting resistor R3;
a source electrode of the second MOS tube Q2 is connected with a source electrode of the first MOS tube Q1, a drain electrode of the second MOS tube Q2 is connected with a battery input positive electrode, a source electrode of the fourth MOS tube Q4, one end of the first divider resistor R1 and one end of the second divider resistor R4, and a grid electrode of the second MOS tube Q2 is connected with the second divider resistor R4, one end of the fourth divider resistor R9 and a drain electrode of the fourth MOS tube Q4;
the source electrode of the first MOS tube Q1 is connected with the source electrode of the second MOS tube Q2, the grid electrode of the first MOS tube Q1 is connected with one end of a first current-limiting resistor R3, and the drain electrode of the first MOS tube Q1 is connected with one end of a first diode D1;
the other end of the first diode D1 is connected with a load access end, and the other end of the first diode D1 is connected with a drain electrode of the first MOS tube Q1;
one end of a fourth voltage-dividing resistor R9 is connected with the second voltage-dividing resistor R4, the grid electrode of the second MOS tube Q2, the drain electrode of the fourth MOS tube Q4 and one end of the first current-limiting resistor R3, and the other end is connected with one end of a fourth diode D4;
the other end of the fourth diode D4 is connected with the output end of the control circuit; the drain of the fifth MOS transistor Q5 is connected to one end of the third voltage dividing resistor R7, the source of the fifth MOS transistor Q5 is connected to ground, and the gate of the fifth MOS transistor Q5 is connected to the control output end of the automatic switching circuit.
Further, in the embodiment of the present invention, the external power output circuit includes an inductor L1, a third diode D3, a third MOS transistor Q3, a second diode D2, a fifth voltage dividing resistor R6, a sixth voltage dividing resistor R10, and a fifth diode D5;
one end of the inductor L1 is connected with the external power input end, and the other end of the inductor L1 is connected with one end of the third diode D3, the emitting electrode of the triode T1, one end of the second current limiting resistor R2, one end of the seventh voltage dividing resistor R5 and one end of the fifth voltage dividing resistor R6;
one end of a third diode D3 is connected with one end of the inductor L1, an emitting electrode of the triode T1, one end of a second current limiting resistor R2, one end of a seventh divider resistor R5 and one end of a fifth divider resistor R6, and the other end of the third diode D3 is connected with a source electrode of a third MOS transistor Q3;
the source electrode of the third MOS transistor Q3 is connected to one end of a third diode D3, the gate electrode of the third MOS transistor Q3 is connected to one end of a fifth voltage-dividing resistor R6 and one end of a sixth voltage-dividing resistor R10, and the drain electrode of the third MOS transistor Q3 is connected to one end of a second diode D2;
one end of the second diode D2 is connected with the drain electrode of the third MOS transistor Q3, and the other end of the second diode D is connected with the load input end;
one end of a fifth voltage-dividing resistor R6 is connected with one end of the inductor L1, one end of a third diode D3, an emitting electrode of the triode T1, one end of a second current-limiting resistor R2 and a seventh voltage-dividing resistor R5, and the other end of the fifth voltage-dividing resistor R6 is connected with a grid electrode of a third MOS transistor Q3 and one end of a second voltage-dividing resistor R10;
one end of a sixth voltage-dividing resistor R10 is connected with the grid of the third MOS transistor Q3 and one end of a fifth voltage-dividing resistor R6, and the other end of the sixth voltage-dividing resistor R is connected with one end of a fifth diode D5; one end of the fifth diode D5 is connected to the sixth voltage-dividing resistor R10, and the other end is connected to the output end of the control circuit.
When the automatic switching circuit is implemented in detail, the automatic switching circuit provided by the embodiment of the present invention includes a triode T1, a reference voltage source U1, a second current limiting resistor R2, a third current limiting resistor R8, a seventh voltage dividing resistor R5, an eighth voltage dividing resistor R11, a ninth voltage dividing resistor R13, and a tenth voltage dividing resistor R14; an emitting electrode of the triode T1 is connected with one end of the inductor L1, one end of the third diode D3, one end of the second current limiting resistor R2, one end of the seventh voltage dividing resistor R5 and one end of the fifth voltage dividing resistor R6, a base electrode of the triode T1 is connected with one end of the second current limiting resistor R2 and one end of the third current limiting resistor R8, and a collector electrode of the triode T1 is connected with one end of the eighth voltage dividing resistor R11; one end of a second current limiting resistor R2 is connected with one end of an inductor L1, one end of a third diode D3, one end of a seventh voltage dividing resistor R5, one end of a fifth voltage dividing resistor R6 and an emitting electrode of the triode T1, and the other end of the second current limiting resistor R2 is connected with a base electrode of the triode T1 and one end of a third current limiting resistor R8; one end of a third current limiting resistor R8 is connected with one end of a second current limiting resistor R2 and the base electrode of the triode T1, and the other end of the third current limiting resistor R8 is connected with the output end of the reference voltage source U1; the output end of the reference voltage source U3 is connected with one end of the third current limiting resistor R8, the ground end of the reference voltage source U1 is connected with the ground, and the input end of the reference voltage source U1 is connected with the seventh voltage dividing resistor R5 and the tenth voltage dividing resistor R14; one end of a seventh voltage-dividing resistor R5 is connected with one end of the inductor L1, one end of the third diode D3, one end of the second current-limiting resistor R2, one end of the fifth voltage-dividing resistor R6 and the emitter of the triode T1, and the other end of the seventh voltage-dividing resistor R5 is connected with one end of a tenth voltage-dividing resistor R14 and the input end of the reference voltage source U1; one end of the voltage-sharing resistor R14 is connected with the input end of the reference voltage source U1 and the seventh voltage-dividing resistor R5, and the other end is connected with the ground; one end of the eighth divider resistor R11 is connected with the collector of the triode T1, and the other end of the eighth divider resistor R is connected with the input end of the battery output circuit; one end of the ninth divider resistor R13 is connected to the input end of the battery output circuit, and the other end is connected to ground.
The embodiment of the utility model provides a realize carrying out the traceless switching to battery output circuit and outer electric output circuit through automatic switch-over circuit. When the external power supply is disconnected, the battery output circuit is automatically opened, and the output power supply is a reserve power supply. When the external power supply is connected, the external electric output circuit is automatically turned on, and the output power supply is the external power supply. The automatic switching circuit realizes the function of automatic switching of double power supplies. The control circuit is used for controlling whether the load access end is electrified or not.
As a preferred embodiment of the present invention, the control circuit in the embodiment of the present invention includes a fourth current limiting resistor R15, a fifth current limiting resistor R12, and a sixth MOS transistor Q6, wherein one end of the fourth current limiting resistor R15 is connected to a high level, and the other end is grounded; one end of a fifth current limiting resistor R12 is connected with a high level, and the other end of the fifth current limiting resistor R12 is connected with the grid electrode of a sixth MOS transistor Q6; the grid electrode of the sixth MOS tube Q6 is connected with one end of the fifth current-limiting resistor R12, the source electrode of the sixth MOS tube Q6 is connected with the ground, and the drain electrode of the sixth MOS tube Q6 is connected with the control input end of the battery output circuit and the control input end of the external power output circuit.
It should be noted that the circuit connection relationship among the control circuit, the automatic switching circuit, the battery output circuit and the external power output circuit in the embodiment of the present invention is only a specific example, and in the specific implementation, those skilled in the art may set other circuits in various forms according to actual needs to implement the circuit function of the present invention, which is not limited to this.
Further, in the implementation, a person skilled in the art may also provide various peripheral circuits on the device according to actual needs, such as peripheral circuits for supplying power to the control circuit, the battery output circuit and the external power output circuit, and so on.
The second embodiment of the present invention provides a portable communication device, in which any one of the dual power supply automatic switching management devices according to the first embodiment of the present invention is disposed. The first embodiment of the present invention can be seen for understanding, and the detailed discussion is omitted here.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, and that the scope of the present invention is not limited to the embodiments disclosed.
Claims (8)
1. A dual power automatic switching management device for supplying power to a portable communication device, comprising: the control circuit, the automatic switching circuit, the battery output circuit and the external power output circuit;
the control circuit is used for controlling the battery output circuit or the external electric output circuit to be enabled through the automatic switching circuit based on a preset switching principle so as to supply power to the portable communication equipment;
the battery output circuit is used for supplying power to the portable communication equipment under the triggering of the automatic switching circuit;
and the external power output circuit is used for supplying power to the portable communication equipment under the triggering of the automatic switching circuit.
2. The apparatus of claim 1,
the control circuit is further used for controlling the battery output circuit or the external electric output circuit to be enabled through the automatic switching circuit according to the principle that the external electric priority is higher than that of the battery so as to supply power to the portable communication device.
3. The apparatus of claim 1,
the battery output circuit comprises a first voltage-dividing resistor R1, a second voltage-dividing resistor R4, a third voltage-dividing resistor R7, a fourth voltage-dividing resistor R9, a first current-limiting resistor R3, a first MOS (metal oxide semiconductor) tube Q1, a second MOS tube Q2, a fourth MOS tube Q4, a fifth MOS tube Q5, a first diode D1 and a fourth diode D4;
one end of the first voltage-dividing resistor R1 is connected with the battery input anode, the source electrode of the fourth MOS tube Q4, one end of the second voltage-dividing resistor R4 and the drain electrode of the second MOS tube Q2, and the other end of the first voltage-dividing resistor R1 is connected with the grid electrode of the fourth MOS tube Q4 and one end of the fourth voltage-dividing resistor R7;
one end of the fourth voltage-dividing resistor R7 is connected to the gate of the fourth MOS transistor Q4 and one end of the first voltage-dividing resistor R1, and the other end is connected to the drain of the fifth MOS transistor Q5;
one end of a second voltage-dividing resistor R4 is connected with the battery input anode, one end of the first voltage-dividing resistor R1, the source electrode of the fourth MOS tube Q4 and the drain electrode of the second MOS tube Q2, and the other end of the second voltage-dividing resistor R4 is connected with one end of a fourth voltage-dividing resistor R9, the drain electrode of the fourth MOS tube Q4, the grid electrode of the second MOS tube Q2 and one end of a first current-limiting resistor R3;
a source electrode of the second MOS tube Q2 is connected with a source electrode of the first MOS tube Q1, a drain electrode of the second MOS tube Q2 is connected with a battery input positive electrode, a source electrode of the fourth MOS tube Q4, one end of the first divider resistor R1 and one end of the second divider resistor R4, and a grid electrode of the second MOS tube Q2 is connected with the second divider resistor R4, one end of the fourth divider resistor R9 and a drain electrode of the fourth MOS tube Q4;
the source electrode of the first MOS tube Q1 is connected with the source electrode of the second MOS tube Q2, the grid electrode of the first MOS tube Q1 is connected with one end of a first current-limiting resistor R3, and the drain electrode of the first MOS tube Q1 is connected with one end of a first diode D1;
the other end of the first diode D1 is connected with a load access end, and the other end of the first diode D1 is connected with a drain electrode of the first MOS tube Q1;
one end of a fourth voltage-dividing resistor R9 is connected with the second voltage-dividing resistor R4, the grid electrode of the second MOS tube Q2, the drain electrode of the fourth MOS tube Q4 and one end of the first current-limiting resistor R3, and the other end is connected with one end of a fourth diode D4;
the other end of the fourth diode D4 is connected with the output end of the control circuit; the drain of the fifth MOS transistor Q5 is connected to one end of the third voltage-dividing resistor R7, the source of the fifth MOS transistor Q5 is connected to ground, and the gate of the fifth MOS transistor Q5 is connected to the control output end of the automatic switching circuit.
4. The device of claim 3, wherein the external power output circuit comprises an inductor L1, a third diode D3, a third MOS transistor Q3, a second diode D2, a fifth voltage-dividing resistor R6, a sixth voltage-dividing resistor R10 and a fifth diode D5;
one end of the inductor L1 is connected with the external power input end, and the other end of the inductor L1 is connected with one end of the third diode D3, the emitting electrode of the triode T1, one end of the second current limiting resistor R2, one end of the seventh voltage dividing resistor R5 and one end of the fifth voltage dividing resistor R6;
one end of a third diode D3 is connected with one end of the inductor L1, an emitting electrode of the triode T1, one end of a second current limiting resistor R2, one end of a seventh divider resistor R5 and one end of a fifth divider resistor R6, and the other end of the third diode D3 is connected with a source electrode of a third MOS transistor Q3;
the source electrode of the third MOS transistor Q3 is connected to one end of a third diode D3, the gate electrode of the third MOS transistor Q3 is connected to one end of a fifth voltage-dividing resistor R6 and one end of a sixth voltage-dividing resistor R10, and the drain electrode of the third MOS transistor Q3 is connected to one end of a second diode D2;
one end of the second diode D2 is connected with the drain electrode of the third MOS transistor Q3, and the other end of the second diode D is connected with the load input end;
one end of a fifth voltage-dividing resistor R6 is connected with one end of the inductor L1, one end of a third diode D3, an emitting electrode of the triode T1, one end of a second current-limiting resistor R2 and a seventh voltage-dividing resistor R5, and the other end of the fifth voltage-dividing resistor R6 is connected with a grid electrode of a third MOS transistor Q3 and one end of a second voltage-dividing resistor R10;
one end of a sixth voltage-dividing resistor R10 is connected with the gate of the third MOS transistor Q3 and one end of a fifth voltage-dividing resistor R6, and the other end is connected with one end of a fifth diode D5; one end of the fifth diode D5 is connected to the sixth voltage-dividing resistor R10, and the other end is connected to the output end of the control circuit.
5. The apparatus of claim 4, wherein the automatic switching circuit comprises a transistor T1, a reference voltage source U1, a second current limiting resistor R2, a third current limiting resistor R8, a seventh voltage dividing resistor R5, an eighth voltage dividing resistor R11, a ninth voltage dividing resistor R13 and a tenth voltage dividing resistor R14;
an emitting electrode of the triode T1 is connected with one end of the inductor L1, one end of the third diode D3, one end of the second current limiting resistor R2, one end of the seventh voltage dividing resistor R5 and one end of the fifth voltage dividing resistor R6, a base electrode of the triode T1 is connected with one end of the second current limiting resistor R2 and one end of the third current limiting resistor R8, and a collector electrode of the triode T1 is connected with one end of the eighth voltage dividing resistor R11;
one end of a second current limiting resistor R2 is connected with one end of an inductor L1, one end of a third diode D3, one end of a seventh voltage dividing resistor R5, one end of a fifth voltage dividing resistor R6 and an emitting electrode of the triode T1, and the other end of the second current limiting resistor R2 is connected with a base electrode of the triode T1 and one end of a third current limiting resistor R8;
one end of a third current limiting resistor R8 is connected with one end of the second current limiting resistor R2 and the base electrode of the triode T1, and the other end of the third current limiting resistor R8 is connected with the output end of the reference voltage source U1;
the output end of the reference voltage source U3 is connected with one end of the third current limiting resistor R8, the ground end of the reference voltage source U1 is connected with the ground, and the input end of the reference voltage source U1 is connected with the seventh voltage dividing resistor R5 and the tenth voltage dividing resistor R14;
one end of a seventh voltage-dividing resistor R5 is connected with one end of the inductor L1, one end of the third diode D3, one end of the second current-limiting resistor R2, one end of the fifth voltage-dividing resistor R6 and the emitter of the triode T1, and the other end of the seventh voltage-dividing resistor R5 is connected with one end of a tenth voltage-dividing resistor R14 and the input end of the reference voltage source U1;
one end of the tenth voltage-dividing resistor R14 is connected with the input end of the reference voltage source U1 and the seventh voltage-dividing resistor R5, and the other end is connected with the ground; one end of the eighth divider resistor R11 is connected with the collector of the triode T1, and the other end of the eighth divider resistor R11 is connected with the input end of the battery output circuit; one end of the ninth divider resistor R13 is connected to the input end of the battery output circuit, and the other end is connected to ground.
6. The apparatus of claim 1, wherein the control circuit comprises a fourth current limiting resistor R15, a fifth current limiting resistor R12, and a sixth MOS transistor Q6,
one end of a fourth current limiting resistor R15 is connected with a high level, and the other end of the fourth current limiting resistor R15 is grounded;
one end of a fifth current limiting resistor R12 is connected with a high level, and the other end of the fifth current limiting resistor R12 is connected with the grid electrode of a sixth MOS transistor Q6;
the grid electrode of the sixth MOS tube Q6 is connected with one end of the fifth current-limiting resistor R12, the source electrode of the sixth MOS tube Q6 is connected with the ground, and the drain electrode of the sixth MOS tube Q6 is connected with the control input end of the battery output circuit and the control input end of the external power output circuit.
7. The apparatus of any one of claims 1-6, further comprising peripheral circuitry;
the peripheral circuit is used for supplying power to the control circuit, the battery output circuit and the external power output circuit.
8. A portable communication apparatus, characterized in that the dual power supply automatic switching management device of any one of claims 1 to 7 is provided in the portable communication apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221712509.5U CN218071102U (en) | 2022-07-05 | 2022-07-05 | Dual-power automatic switching management device and communication equipment with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221712509.5U CN218071102U (en) | 2022-07-05 | 2022-07-05 | Dual-power automatic switching management device and communication equipment with same |
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| Publication Number | Publication Date |
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| CN218071102U true CN218071102U (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221712509.5U Active CN218071102U (en) | 2022-07-05 | 2022-07-05 | Dual-power automatic switching management device and communication equipment with same |
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| Country | Link |
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| CN (1) | CN218071102U (en) |
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