CN211127576U - Power supply circuit, battery and aircraft - Google Patents
Power supply circuit, battery and aircraft Download PDFInfo
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- CN211127576U CN211127576U CN201921284939.XU CN201921284939U CN211127576U CN 211127576 U CN211127576 U CN 211127576U CN 201921284939 U CN201921284939 U CN 201921284939U CN 211127576 U CN211127576 U CN 211127576U
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Abstract
The utility model discloses a power supply circuit, battery and aircraft, wherein, power supply circuit is used for being connected with external voltage input end and voltage output end electricity, and it includes filter circuit, auxiliary voltage stabilizing circuit and voltage stabilizing chip; the auxiliary voltage stabilizing circuit comprises a first voltage division element, a second voltage division element, a first switch element and a second switch element; the input end of the filter circuit is electrically connected with the voltage input end, and the output end of the filter circuit is electrically connected with the first end of the first voltage division element, the first end of the second voltage division element and the first end of the first switch element; the second end of the first voltage division element is electrically connected with the control end of the first switch element, the control end of the second switch element and the input end of the voltage stabilizing chip, and the second end of the second voltage division element is electrically connected with the first end of the second switch element; the second end of the second switching element is electrically connected with the input end of the voltage stabilizing chip; the second end of the first switch element is electrically connected with the output pin of the voltage stabilizing chip and the voltage output end.
Description
Technical Field
The utility model relates to a circuit protection field especially relates to a supply circuit, battery and aircraft.
Background
The conventional L DO power supply circuit is used for supplying stable system voltage for a load system, and the conversion efficiency of the power supply is relatively low due to the principle of linear voltage stabilization, so that a part of energy is sacrificed to be converted into heat.
Therefore, a technical problem to be solved by those skilled in the art is how to reduce power supply loss and power supply heat of the conventional L DO power supply circuit and improve power supply efficiency to meet the power consumption requirement of a high power consumption system.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a power supply circuit, a battery and an aircraft, which are capable of supplying power with less power consumption, generating heat less, and having higher efficiency, and capable of satisfying the power demand of a large power consumption system and providing a battery and an aircraft having the power supply circuit.
In order to achieve the above object, the present invention provides a power supply circuit for being electrically connected to an external voltage input terminal and a voltage output terminal, the power supply circuit including:
the filter circuit, the auxiliary voltage stabilizing circuit and the voltage stabilizing chip;
the auxiliary voltage stabilizing circuit comprises a first voltage division element, a second voltage division element, a first switch element and a second switch element;
the input end of the filter circuit is electrically connected with the voltage input end, and the output end of the filter circuit is electrically connected with the first end of the first voltage division element, the first end of the second voltage division element and the first end of the first switch element;
the second end of the first voltage division element is electrically connected with the control end of the first switch element, the control end of the second switch element and the input end of the voltage stabilizing chip, wherein the control end of the first switch element can change the resistance value between the first end of the first switch element and the second end of the first switch element, and the control end of the second switch element can change the resistance value between the first end of the second switch element and the second end of the second switch element;
a second end of the second voltage dividing element is electrically connected with a first end of the second switching element;
the second end of the second switching element is electrically connected with the input end of the voltage stabilizing chip;
the second end of the first switching element is electrically connected with the output pin of the voltage stabilizing chip and the voltage output end; and when the voltage stabilizing chip detects that the output voltage of the output pin is greater than the preset voltage, the input current of the input pin of the voltage stabilizing chip is controlled to be reduced.
Preferably, the first switching element is a MOS transistor;
the source electrode of the first switch element is electrically connected with the first end of the first voltage division element, the first end of the second voltage division element and the output end of the filter circuit;
the grid electrode of the first switching element is electrically connected with the second end of the first voltage division element, the control end of the second switching element and the input end of the voltage stabilization chip;
and the drain electrode of the first switching element is electrically connected with the output pin of the voltage stabilizing chip and the voltage output end.
Preferably, the second switching element is a MOS transistor;
the source of the second switching element is electrically connected with the second end of the second voltage division element;
the grid electrode of the second switching element is electrically connected with the second end of the first voltage division element, the grid electrode of the first switching element and the input end of the voltage stabilizing chip;
and the drain electrode of the second switching element is electrically connected with the input end of the voltage stabilizing chip.
Preferably, the first switching element and the second switching element are P-type MOS transistors with the same model.
Preferably, the first voltage dividing element and the second voltage dividing element are both resistors, and a resistance value of the first voltage dividing element is greater than a resistance value of the second voltage dividing element.
Preferably, a ratio of the resistance value of the first voltage dividing element to the resistance value of the second voltage dividing element is greater than or equal to 10.
Preferably, the filter circuit includes a first capacitor, a first end of the first capacitor is electrically connected to the voltage input end, and a second end of the first capacitor is grounded.
Preferably, the filter circuit further includes a third voltage dividing element, a first end of the third voltage dividing element is electrically connected to the voltage input end, and a second end of the third voltage dividing element is electrically connected to the first end of the first capacitor.
Preferably, the voltage stabilizing chip is provided with an enable pin;
the power supply circuit further comprises an enabling circuit, wherein the enabling circuit comprises a fourth voltage division element and a fifth voltage division element;
the first end of the fourth voltage division element is electrically connected with the output end of the filter circuit;
the second end of the fourth voltage division element is electrically connected with the first end of the fifth voltage division element and the enabling pin;
and the second end of the fifth voltage division element is grounded.
The utility model also provides a battery, the battery includes: the battery comprises a battery body and the power supply circuit, wherein the battery body is electrically connected with the output end of the power supply circuit.
The utility model also provides an aircraft, aircraft includes:
a body;
the machine arm is connected with the machine body;
the power assembly is arranged on the horn and used for providing flying power for the aircraft; and
the battery is arranged on the fuselage, electrically connected with the power assembly and used for providing electric power for the aircraft.
Compared with the prior art, the utility model provides a supply circuit utilizes first switch element Q1 and second switch element Q2 can be according to the internal resistance of load current's big or small automatic adjustment self to can assist the steady voltage chip output steady voltage, make the steady voltage chip loss can be smaller during operation, generate heat less, and efficiency is higher, can satisfy the power supply demand of big consumption system.
Drawings
Fig. 1 is a schematic diagram of a module structure of a power supply circuit provided by the present invention;
fig. 2 is a specific circuit diagram of an embodiment of the power supply circuit of the present invention;
fig. 3 is a schematic diagram of a module structure of another embodiment of the power supply circuit provided by the present invention;
fig. 4 is a specific circuit diagram of another embodiment of the power supply circuit of the present invention;
fig. 5 is a schematic diagram of a module structure of a battery according to the present invention;
fig. 6 is a schematic perspective view of the aircraft according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, the present invention provides a power supply circuit 10, the power supply circuit 10 is electrically connected to an external voltage input terminal 20 and a voltage output terminal 30, so as to convert an input voltage V1 of the voltage input terminal 20 into an output voltage V2 of the voltage output terminal 30, and supply power to a load through the voltage output terminal 30, wherein the load may be an electric device such as a motor and a sensor, or a power supply device such as a dry battery and a lithium battery.
The voltage input terminal 20 is a power input port of an external power supply device, and the voltage input terminal 20 is an electrical node, such as a connection terminal.
The voltage output terminal 30 is an electrical node, such as a connection terminal, and the electric energy converted by the power supply circuit 10 is output through the voltage output terminal 30, that is, the voltage output terminal 30 can be used as a voltage input terminal of an external electrical device.
The power supply circuit 10 includes a filter circuit 101, an auxiliary voltage regulator circuit 102, and a voltage regulator chip 103.
Specifically, the auxiliary stabilizing circuit 102 includes a first voltage-dividing element R1, a second voltage-dividing element R2, a first switching element Q1, and a second switching element Q2.
An input terminal of the filter circuit 101 is electrically connected to the voltage input terminal 20, and an output terminal of the filter circuit 101 is electrically connected to a first terminal of the first voltage dividing element R1, a first terminal of the second voltage dividing element R2, and a first terminal of the first switching element Q1. A second terminal of the first voltage dividing element R1 is electrically connected to a control terminal of the first switching element Q1, a control terminal of the second switching element Q2, and an input terminal of the regulator chip 103. The control terminal of the first switching element Q1 may change a resistance between the first terminal of the first switching element Q1 and the second terminal of the first switching element Q1, and when the resistance between the first terminal of the first switching element Q1 and the second terminal of the first switching element Q1 reaches a maximum value, the first switching element Q1 may be controlled to be turned off, that is, the first switching element Q1 may adjust its own resistance value according to the current magnitude of its control terminal, so as to adjust the voltage division of the line on which the first switching element Q1 is located.
The control terminal of the second switching element Q2 may change the resistance between the first terminal of the second switching element Q2 and the second terminal of the second switching element Q2, that is, when the resistance between the first terminal of the second switching element Q2 and the second terminal of the second switching element Q2 reaches a maximum value, the second switching element Q2 may be controlled to be turned off, that is, the second switching element Q2 may adjust its own resistance value according to the current magnitude at its control terminal, so as to adjust the voltage division of the line on which the second switching element Q2 is located.
A second terminal of the second voltage dividing element R2 is electrically connected to a first terminal of the second switching element Q2.
A second terminal of the second switching element Q2 is electrically connected to an input terminal of the voltage regulator chip 103, that is, to the input pin IN of the voltage regulator chip 103.
The second terminal of the first switching element Q1 is electrically connected to the output terminal of the regulator chip 103 and the voltage output terminal 30, that is, the output pin OUT of the regulator chip 103, and the regulator chip 103 controls the input current of the input pin IN to decrease when detecting that the voltage of the output pin OUT is greater than the predetermined output voltage.
The first switching element Q1 is a MOS transistor; a source of the first switching element Q1 is electrically connected to a first end of the first voltage dividing element R1, a first end of the second voltage dividing element R2, and an output end of the filter circuit 101; the gate of the first switching element Q1 is electrically connected with the second end of the first voltage division element R1, the control end of the second switching element Q2 and the input end of the voltage stabilization chip 103; the drain of the first switching element Q1 is electrically connected to the output terminal of the regulator chip 103 and the voltage output terminal 30.
The second switching element Q2 is a MOS transistor; a source of the second switching element Q2 is electrically connected to a second terminal of the second voltage dividing element R2; the gate of the second switching element Q2 is electrically connected to the second terminal of the first voltage dividing element R1, the gate of the first switching element Q1, and the input terminal of the regulator chip 103; the drain of the second switching element Q2 is electrically connected to the input terminal of the regulator chip 103.
Preferably, the first switching element Q1 and the second switching element Q2 are MOS transistors of the same type, which may be, but are not limited to, P-type MOS transistors.
The first voltage dividing element R1 and the second voltage dividing element R2 are both resistors, and the resistance value of the first voltage dividing element R1 is larger than that of the second voltage dividing element R2.
Preferably, the ratio of the resistance value of the first voltage dividing element R1 to the resistance value of the second voltage dividing element R2 is greater than or equal to 10.
In some embodiments, the filter circuit 101 includes a first capacitor C1, a first terminal of the first capacitor C1 is electrically connected to the voltage input terminal 20, and a second terminal of the first capacitor C1 is grounded to reduce the fluctuation of the input voltage.
Preferably, the filter circuit 101 further includes a third voltage dividing element R3, a first end of the third voltage dividing element R3 is electrically connected to the voltage input terminal 20, a second end of the third voltage dividing element R3 is electrically connected to a first end of the first capacitor C1, the third voltage dividing element R3 is a resistor, and the first capacitor C1 and the third voltage dividing element R3 are used to form an RC filter circuit.
Referring to fig. 3-4, in some embodiments, the voltage regulator chip 103 is provided with an enable pin EN; the power supply circuit 10 further comprises an enabling circuit 104, the enabling circuit 104 comprising a fourth voltage dividing element R4 and a fifth voltage dividing element R5; a first end of the fourth voltage dividing element R4 is electrically connected to an output end of the filter circuit 101; the second end of the fourth voltage division element R4 is electrically connected with the first end of the fifth voltage division element R5 and the enabling pin; a second end of the fifth voltage dividing element R5 is grounded.
The fourth voltage dividing element R4 and the fifth voltage dividing element R5 are resistors, and the resistance values can be set as required.
The voltage regulation chip 103 is an L DO voltage regulation chip, and the model thereof includes but is not limited to TPS 70933.
In some embodiments, the power supply circuit 10 further includes a second capacitor C2, a first terminal of the second capacitor C2 is electrically connected to the voltage output terminal 30, and a second terminal of the second capacitor C2 is grounded.
Referring to fig. 4, for example, when a load is powered by the power supply circuit 10, the input voltage at the voltage input terminal 20 is V1, the corresponding input current is I, the input current I passes through the filter circuit 101, and the first voltage dividing element R1 to reach the input pin IN of the regulator chip 103, so that the regulator chip 103 operates to convert the input voltage V1 into the output voltage V2.
Due to the existence of the first voltage dividing element R1, a voltage difference △ V is generated between the two ends of the first voltage dividing element R1, and if the voltage difference △ V changes, the first switch element Q1 controls the resistance value between the first end and the second end of the first switch element Q1 to change through the control end, and the second switch element Q2 controls the resistance value between the first end and the second end of the second switch element Q2 to change through the control end.
When the voltage difference △ V reaches a certain value, the first switching element Q1 and the second switching element Q2 are in a semi-conducting state, and at this time, a part of the current passes through the second voltage dividing element R2, the first switching element Q1 and the voltage stabilizing chip 103 to reach the voltage output terminal 30, and another part of the current passes through the second switching element Q2 and directly reaches the voltage output terminal 30.
IN the branch where the second voltage dividing element R2 is located, due to the existence of the current limiting resistor of the second voltage dividing element R2, the current flowing through the branch of the second switching element Q2 may be relatively large, and the relatively large current may cause the output voltage V2 of the voltage output terminal 30 to increase, and during the linear voltage stabilization of the voltage stabilization chip 103, if the voltage stabilization chip 103 detects that the output voltage V2 of the output pin OUT is greater than the preset voltage, the input current of the input pin IN is reduced, and when the input current is reduced, the voltage between the first end and the second end of the first switching element Q1 and the voltage between the first end and the second end of the second switching element Q2 are both reduced, the MOS internal resistances of the first switching element Q1 and the second switching element Q2 are also increased gradually, so that the voltage division on the line corresponding to the first switching element Q1 and the second switching element Q2 is increased, and the output voltage V2 is finally reduced, so that when the load current is stable, the voltage of the power supply circuit 10 is finally stabilized at the standard output voltage of the voltage stabilization chip 103 .
Because the first switching element Q1 and the second switching element Q2 can automatically adjust their internal resistances according to the magnitude of the load current, the loss of the regulator chip 103 is relatively small, heat is less, the efficiency is relatively high, and the power supply requirement of a high-power consumption system can be met.
And because the power supply circuit is built by using conventional electronic components, the circuit is simple and easy to design, the cost of the power supply circuit can be reduced to a certain extent, and a low-cost and practical solution is provided for power supply of a complex system.
Referring to fig. 5, the present invention further provides a battery 100, wherein the battery 100 includes the aforementioned power supply circuit 10 and a battery main body 40 electrically connected to an output end of the power supply circuit 10, and the battery main body 40 is used for storing electric energy.
When in use, the battery 100 is electrically connected to an external power supply device through an input terminal of the power supply circuit 10, and supplies power to the battery main body 40 through the external power supply device.
In some embodiments, the battery 100 further includes a switch element (not shown) and a control component (not shown), wherein the power supply circuit 10 is electrically connected to the battery main body 40 through the switch element, and the control component is electrically connected to the battery main body 40 and the switch element, and is configured to detect the power information of the battery main body 40, and control the switch element to be disconnected when the power of the battery main body 40 reaches a preset value, so as to disconnect the connection path between the power supply circuit 10 and the battery main body 40, and avoid overcharging the battery main body 40.
Referring to fig. 6, the present invention further provides an aircraft 200, wherein the aircraft 200 includes:
a body 50;
a horn 60 connected to the body 50;
the power assembly 70 is arranged on the horn 60 and used for providing flying power for the aircraft 200; and
the aforementioned battery 100, the battery 100 is disposed on the fuselage 50 and electrically connected to the power assembly 70, for providing power to the aircraft 200.
It is understood that the aircraft 200 may be a single-rotor aircraft or a multi-rotor aircraft, and is not limited thereto.
Compared with the prior art, the utility model provides a supply circuit utilizes first switch element Q1 and second switch element Q2 can be according to the internal resistance of load current's big or small automatic adjustment self to can assist the steady voltage chip output steady voltage, make the steady voltage chip loss can be smaller during operation, generate heat less, and efficiency is higher, can satisfy the power supply demand of big consumption system.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (11)
1. A power supply circuit for electrical connection to external voltage input and voltage output terminals, the power supply circuit comprising:
the filter circuit, the auxiliary voltage stabilizing circuit and the voltage stabilizing chip;
the auxiliary voltage stabilizing circuit comprises a first voltage division element, a second voltage division element, a first switch element and a second switch element;
the input end of the filter circuit is electrically connected with the voltage input end, and the output end of the filter circuit is electrically connected with the first end of the first voltage division element, the first end of the second voltage division element and the first end of the first switch element;
the second end of the first voltage division element is electrically connected with the control end of the first switch element, the control end of the second switch element and the input end of the voltage stabilizing chip, wherein the control end of the first switch element can change the resistance value between the first end of the first switch element and the second end of the first switch element, and the control end of the second switch element can change the resistance value between the first end of the second switch element and the second end of the second switch element;
a second end of the second voltage dividing element is electrically connected with a first end of the second switching element;
the second end of the second switching element is electrically connected with the input end of the voltage stabilizing chip;
the second end of the first switch element is electrically connected with the output pin of the voltage stabilizing chip and the voltage output end, and the voltage stabilizing chip controls the input current of the input pin of the voltage stabilizing chip to be reduced when detecting that the output voltage of the output pin is greater than the preset voltage.
2. The power supply circuit of claim 1, wherein: the first switching element is an MOS tube;
the source electrode of the first switch element is electrically connected with the first end of the first voltage division element, the first end of the second voltage division element and the output end of the filter circuit;
the grid electrode of the first switching element is electrically connected with the second end of the first voltage division element, the control end of the second switching element and the input end of the voltage stabilization chip;
and the drain electrode of the first switching element is electrically connected with the output pin of the voltage stabilizing chip and the voltage output end.
3. The power supply circuit of claim 2, wherein: the second switching element is an MOS tube;
the source of the second switching element is electrically connected with the second end of the second voltage division element;
the grid electrode of the second switching element is electrically connected with the second end of the first voltage division element, the grid electrode of the first switching element and the input end of the voltage stabilizing chip;
and the drain electrode of the second switching element is electrically connected with the input end of the voltage stabilizing chip.
4. The power supply circuit of claim 3, wherein: the first switch element and the second switch element are P-type MOS tubes with the same type.
5. The power supply circuit of claim 1, wherein: the first voltage division element and the second voltage division element are both resistors, and the resistance value of the first voltage division element is larger than that of the second voltage division element.
6. The power supply circuit of claim 5, wherein: the ratio of the resistance value of the first voltage-dividing element to the resistance value of the second voltage-dividing element is greater than or equal to 10.
7. The power supply circuit of any one of claims 1-6, wherein:
the filter circuit comprises a first capacitor, wherein the first end of the first capacitor is electrically connected with the voltage input end, and the second end of the first capacitor is grounded.
8. The power supply circuit of claim 7, wherein: the filter circuit further comprises a third voltage division element, a first end of the third voltage division element is electrically connected with the voltage input end, and a second end of the third voltage division element is electrically connected with the first end of the first capacitor.
9. The power supply circuit of any one of claims 1-6, wherein:
the voltage stabilizing chip is provided with an enabling pin;
the power supply circuit further comprises an enabling circuit, wherein the enabling circuit comprises a fourth voltage division element and a fifth voltage division element;
the first end of the fourth voltage division element is electrically connected with the output end of the filter circuit;
the second end of the fourth voltage division element is electrically connected with the first end of the fifth voltage division element and the enabling pin;
and the second end of the fifth voltage division element is grounded.
10. A battery, comprising:
a battery body, and
the power supply circuit of any one of claims 1-9, wherein the battery body is electrically connected to an output of the power supply circuit.
11. An aircraft, characterized in that it comprises:
a body;
the machine arm is connected with the machine body;
the power assembly is arranged on the horn and used for providing flying power for the aircraft; and
the battery of claim 10, wherein the battery is disposed in the fuselage and electrically coupled to the power assembly for providing power to the aircraft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921284939.XU CN211127576U (en) | 2019-08-06 | 2019-08-06 | Power supply circuit, battery and aircraft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921284939.XU CN211127576U (en) | 2019-08-06 | 2019-08-06 | Power supply circuit, battery and aircraft |
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| CN211127576U true CN211127576U (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474529A (en) * | 2019-08-06 | 2019-11-19 | 深圳市道通智能航空技术有限公司 | A kind of power supply circuit, battery and aircraft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474529A (en) * | 2019-08-06 | 2019-11-19 | 深圳市道通智能航空技术有限公司 | A kind of power supply circuit, battery and aircraft |
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Address after: 518055 Shenzhen, Guangdong, Nanshan District Xili street, No. 1001, Zhiyuan Road, B1 9. Patentee after: Shenzhen daotong intelligent Aviation Technology Co.,Ltd. Address before: 518055 Shenzhen, Guangdong, Nanshan District Xili street, No. 1001, Zhiyuan Road, B1 9. Patentee before: AUTEL ROBOTICS Co.,Ltd. |