Energy storage power supply circuit

Abstract

The utility model discloses an energy storage power supply circuit, which comprises a solar cell, a first diode, a first transistor switch unit, a second transistor switch unit, a first voltage acquisition unit, a second voltage acquisition unit, a voltage comparison unit and an energy storage device, and is characterized in that the cathode of the first diode is electrically connected with target electric equipment; the first transistor switch unit is electrically connected with the positive electrode of the solar cell, the second transistor switch unit is electrically connected with the electric equipment, the first voltage acquisition unit is electrically connected with the first transistor switch unit, and the second voltage acquisition unit is electrically connected with the energy storage device. The signal input end of the voltage comparison unit is electrically connected with the first voltage acquisition unit and the second voltage acquisition unit, and the signal output end of the voltage comparison unit is electrically connected with the second transistor switch unit; the energy storage device is electrically connected with the second transistor switch unit. The device has the advantages of simple and reliable structure and convenience in popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage power supply, in particular to an energy storage power supply circuit. Background Art

[0002] Portable energy storage power supplies can provide power to users in situations where it is inconvenient to connect to the mains or there is no mains, making it convenient for users to use electronic devices. They have been increasingly widely used in outdoor travel, earthquake prevention and disaster prevention, etc. The existing energy storage power supply circuit includes a DC / DC boost circuit, an inverter circuit, a filter circuit, etc. The battery voltage (12V / 24V / 48V) is boosted by a DC / DC boost circuit, then inverted by an inverter circuit, and then filtered by a filter circuit into a sine wave output to power the electrical load. However, the existing energy storage power supply circuit has a complex structure and low reliability, which is not easy to promote and apply. Utility Model Content

[0003] The technical problem solved by the utility model is to provide an energy storage power supply circuit with simple structure and high reliability.

[0004] The utility model provides an energy storage power supply circuit, which is used for supplying power to a target electrical equipment, and comprises a solar cell, a first diode, a first transistor switch unit, a second transistor switch unit, a first voltage acquisition unit, a second voltage acquisition unit, a voltage comparison unit and an energy storage device, wherein the positive electrode of the solar cell is electrically connected to the anode of the first diode, the negative electrode of the solar cell is grounded, and the cathode of the first diode is electrically connected to the target electrical equipment; the first transistor switch unit is electrically connected to the positive electrode of the solar cell, the second transistor switch unit is electrically connected to the electrical equipment, the first voltage acquisition unit is electrically connected to the first transistor switch unit, the second voltage acquisition unit is electrically connected to the energy storage device, the signal input end of the voltage comparison unit is electrically connected to the first voltage acquisition unit and the second voltage acquisition unit, the signal output end of the voltage comparison unit is electrically connected to the second transistor switch unit; and the energy storage device is electrically connected to the second transistor switch unit.

[0005] Preferably, the first transistor switch unit includes a first resistor, a second resistor, a first thyristor, a first field effect transistor and a second field effect transistor, the first end of the first resistor is electrically connected to the positive electrode of the solar cell, and the second end of the first resistor is electrically connected to the anode of the first thyristor; the first end of the second resistor is electrically connected to the first end of the first resistor, and the second end of the second resistor is electrically connected to the gate of the first field effect transistor; the cathode of the first thyristor is electrically connected to the energy storage device and the second transistor switch unit, the control electrode of the first thyristor is electrically connected to the drain of the first field effect transistor; the source of the first field effect transistor is electrically connected to the anode of the first thyristor; the source of the second field effect transistor is grounded, the drain of the second field effect transistor is electrically connected to the drain of the first field effect transistor, and the gate of the second field effect transistor is electrically connected to the gate of the first field effect transistor.

[0006] Preferably, the first transistor switch unit further includes a first capacitor, a first end of the first capacitor is electrically connected to the anode of the first thyristor, and a second end of the first capacitor is grounded.

[0007] Preferably, the second transistor switch unit includes a second thyristor, the anode of the second thyristor is electrically connected to the cathode of the first thyristor, the cathode of the second thyristor is electrically connected to the target electrical equipment, and the control electrode of the second thyristor is electrically connected to the signal output end of the voltage comparison unit.

[0008] Preferably, the first voltage acquisition unit includes a third resistor and a fourth resistor, the first end of the third resistor is electrically connected to the anode of the first thyristor, and the second end of the third resistor is electrically connected to the signal input end of the voltage comparison unit; the first end of the fourth resistor is electrically connected to the second end of the third resistor, and the second end of the fourth resistor is grounded.

[0009] Preferably, the second voltage acquisition unit includes a fifth resistor and a sixth resistor, the first end of the fifth resistor is electrically connected to the energy storage device, and the second end of the fifth resistor is electrically connected to the signal input end of the voltage comparison unit; the first end of the sixth resistor is electrically connected to the second end of the fifth resistor, and the second end of the sixth resistor is grounded.

[0010] Preferably, the second voltage acquisition unit further includes a second capacitor, a first end of the second capacitor is electrically connected to the first end of the sixth resistor, and a second end of the second capacitor is grounded.

[0011] Preferably, the voltage comparison unit includes a comparator, a second diode and a third diode, the forward input terminal of the comparator is electrically connected to the second end of the fifth resistor, the reverse input terminal of the comparator is electrically connected to the second end of the third resistor, and the output terminal of the comparator is electrically connected to the control electrode of the second thyristor; the anode of the second diode is electrically connected to the anode of the first thyristor, and the cathode of the second diode is electrically connected to the positive input terminal of the comparator; the anode of the third diode is electrically connected to the energy storage device, and the cathode of the third diode is electrically connected to the positive input terminal of the comparator.

[0012] Preferably, the energy storage device comprises a third capacitor, a first end of the third capacitor is electrically connected to the anode of the second thyristor, and a second end of the third capacitor is grounded.

[0013] Preferably, the energy storage power supply circuit further comprises a filter unit, a first end of the filter unit is electrically connected to the cathode of the first thyristor, and a second end of the filter unit is grounded.

[0014] The utility model has the following beneficial effects: through the cooperation between the solar cell, the first diode, the first transistor switch unit, the second transistor switch unit, the first voltage collection unit, the second voltage collection unit, the voltage comparison unit and the energy storage device, when the solar cell has sufficient power, the solar cell supplies power to the target electrical device through the first diode. When the solar cell has insufficient power, the first transistor switch unit is turned off, and the voltage comparison unit controls the second transistor switch unit to turn on, so as to provide the electrical energy of the energy storage device to the electrical device, and the solar cell and the energy storage device supply power in a time-sharing manner. The circuit has the advantages of simple and reliable structure and easy promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a circuit diagram of the energy storage power supply circuit of the utility model. DETAILED DESCRIPTION

[0016] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that, if there is no conflict, the embodiments of the present invention and the various features in the embodiments can be combined with each other, all within the protection scope of the present invention.

[0017] See also Figure 1The utility model provides an energy storage power supply circuit for supplying power to an embedded controller, which includes a power supply circuit unit 1, a switch circuit unit 2 and an enabling circuit unit 3. The power supply circuit unit 1 includes a first resistor R1, a first capacitor C1, a first diode D1, a fuse F and a first field effect transistor Q1. The first end of the first resistor R1 is used to be electrically connected to the signal ground, and the second end of the first resistor R1 is used to be electrically connected to the power ground. By setting the first resistor R1, the safety can be improved. The first end of the first capacitor C1 is electrically connected to the first end of the fuse F, the second end of the first capacitor C1 is used to be electrically connected to the signal ground, and the second end of the fuse F is used to be electrically connected to the embedded controller. By setting the fuse F, the circuit can be protected when the current is too large.

[0018] The anode of the first diode D1 is used to be electrically connected to the first potential point, and the first potential point can provide a current of 3.3A, etc., which can be selected as needed and is not specifically limited here. The cathode of the first diode D1 is electrically connected to the second end of the fuse F. The source of the first field effect transistor Q1 is used to be connected to the second potential point, the drain of the field effect transistor is electrically connected to the cathode of the first diode D1, and the gate of the first field effect transistor Q1 is used to be connected to the third potential point. Among them, the potential of the third potential point is higher than the potential of the second potential point, and the voltage of the second potential point is different from the voltage of the first potential point. The switch circuit unit 2 is electrically connected to the cathode of the first diode D1 and the embedded controller. The enabling circuit unit 3 is electrically connected to the switch circuit unit 2 and the embedded controller.

[0019] The switch circuit unit 2 includes a second resistor R2, a second diode D2 and a key switch K. The first end of the second resistor R2 is electrically connected to the cathode of the first diode D1, and the second end of the second resistor R2 is electrically connected to the anode of the second diode D2. The anode of the second diode D2 is used to be electrically connected to the embedded controller, and the cathode of the second diode D2 is electrically connected to the key switch K. When the key switch K is pressed, the second diode D2 is turned on to trigger the embedded controller.

[0020] The switch circuit unit 2 further includes a second capacitor C2 and a third capacitor C3, wherein a first end of the second capacitor C2 is electrically connected to a second end of the second resistor R2, and a second end of the second capacitor C2 is grounded. A first end of the third capacitor C3 is electrically connected to a cathode of the second diode D2, and a second end of the third capacitor C3 is grounded. By providing the second capacitor C2 and the third capacitor C3, the signal can be made more reliable.

[0021] The switch circuit unit 2 further includes a third resistor R3, a fourth resistor R4, a third diode D3 and a second field effect transistor Q2, wherein the first end of the third resistor R3 is used to be electrically connected to the first potential point, and the second end of the third resistor R3 is electrically connected to the anode of the third diode D3. The first end of the fourth resistor R4 is electrically connected to the first end of the third resistor R3, and the second end of the fourth resistor R4 is electrically connected to the drain of the second field effect transistor Q2. The anode of the third diode D3 is electrically connected to the gate of the second field effect transistor Q2, and the cathode of the third diode D3 is electrically connected to the key switch K. The source of the second field effect transistor Q2 is grounded, and the drain of the second field effect transistor Q2 is electrically connected to the enabling circuit unit 3.

[0022] The switch circuit unit 2 further includes a fifth resistor R5, a fourth diode D4, a third field effect transistor Q3 and a fourth capacitor C4, wherein a first end of the fifth resistor R5 is electrically connected to an anode of the fourth diode D4, and a second end of the fifth resistor R5 is grounded. An anode of the fourth diode D4 is electrically connected to an embedded controller, and a cathode of the fourth diode D4 is electrically connected to a gate of the third field effect transistor Q3. A source of the third field effect transistor Q3 is grounded, and a drain of the third field effect transistor Q3 is electrically connected to a second end of the third resistor R3. A first end of the fourth capacitor C4 is electrically connected to a drain of the second field effect transistor Q2, and a second end of the fourth capacitor C4 is grounded.

[0023] The enabling circuit unit 3 includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a fifth capacitor C5, a fourth field effect transistor Q4 and a fifth field effect transistor Q5, wherein the first end of the sixth resistor R6 is electrically connected to the fourth potential point, and the second end of the sixth resistor R6 is electrically connected to the drain of the fourth field effect transistor Q4. The first end of the seventh resistor R7 is electrically connected to the gate of the fourth field effect transistor Q4, and the second end of the seventh resistor R7 is electrically connected to the second end of the fourth resistor R4.

[0024] The first end of the eighth resistor R8 is used to be electrically connected to the fifth potential point, and the second end of the eighth resistor R8 is electrically connected to the gate of the fifth field effect transistor Q5. The first end of the ninth resistor R9 is electrically connected to the second end of the eighth resistor R8, and the second end of the ninth resistor R9 is grounded. The first end of the fifth capacitor C5 is electrically connected to the second end of the eighth resistor R8, and the second end of the fifth capacitor C5 is grounded. The source of the fifth field effect transistor Q5 is grounded, and the drain of the fifth field effect transistor Q5 is electrically connected to the source of the fourth field effect transistor Q4.

[0025] The enabling circuit unit 3 further includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a sixth capacitor C6 and a sixth field effect transistor Q6, wherein the first end of the tenth resistor R10 is electrically connected to the second end of the sixth resistor R6, and the second end of the tenth resistor R10 is electrically connected to the gate of the sixth field effect transistor Q6. The first end of the eleventh resistor R11 is used to be electrically connected to the first point, and the second end of the eleventh resistor R11 is electrically connected to the drain of the sixth field effect transistor Q6. The first end of the twelfth resistor R12 is electrically connected to the first end of the eleventh resistor R11, and the second end of the twelfth resistor R12 is used to be electrically connected to the embedded controller. The first end of the sixth capacitor C6 is electrically connected to the second end of the twelfth resistor R12, and the second end of the sixth capacitor C6 is grounded. The source of the sixth field effect transistor Q6 is grounded.

[0026] The enabling circuit unit 3 further includes a thirteenth resistor R13 and a seventh field effect transistor Q7, wherein the first end of the thirteenth resistor R13 is used to be electrically connected to the first point, and the second end of the thirteenth resistor R13 is electrically connected to the drain of the seventh field effect transistor Q7. The gate of the seventh field effect transistor Q7 is electrically connected to the second end of the sixth resistor R6, the source of the seventh field effect transistor Q7 is grounded, and the drain of the seventh field effect transistor Q7 is electrically connected to the embedded controller. When the key switch K is pressed, the enabling circuit unit 3 triggers the embedded controller to work.

[0027] In summary, the utility model is used to power an embedded controller, which includes a power supply circuit unit 1, a switch circuit unit 2 and an enabling circuit unit 3. The power supply circuit unit 1 includes a first resistor R1, a first capacitor C1, a first diode D1, a fuse F and a first field effect transistor Q1. The anode of the first diode D1 is used to be electrically connected to the first potential point, and the cathode of the first diode D1 is electrically connected to the second end of the fuse F. The source of the first field effect transistor Q1 is used to be connected to the second potential point, the drain of the field effect transistor is electrically connected to the cathode of the first diode D1, and the gate of the first field effect transistor Q1 is used to be connected to the third potential point.

[0028] The potential of the third potential point is higher than the potential of the second potential point. The switch circuit unit 2 is electrically connected to the cathode of the first diode D1 and the embedded controller. The enable circuit unit 3 is electrically connected to the switch circuit unit 2 and the embedded controller. In the standby state, the electric energy at the first potential point is supplied to the embedded controller after passing through the first diode D1. After the switch circuit unit 2 is turned on, the enable circuit unit 3 is triggered to turn on the first field effect transistor Q1, so that the electric energy at the second potential point supplies power to the embedded controller, thereby realizing different electric energy under different states, thereby reducing the power consumption of the computer.

[0029] The energy storage power supply circuit provided by the utility model is introduced in detail above. The principle and implementation mode of the utility model are explained in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for those of ordinary skill in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification is only the implementation mode of the utility model, and it does not limit the patent scope of the utility model. All equivalent structures or equivalent process changes made by using the contents of the specification and drawings of the utility model, or directly or indirectly used in other related technical fields, are included in the patent protection scope of the utility model and should not be understood as limitations on the utility model.

Claims

1. An energy storage power supply circuit for supplying power to a target electrical device, characterized in that: The invention comprises a solar cell, a first diode, a first transistor switch unit, a second transistor switch unit, a first voltage collection unit, a second voltage collection unit, a voltage comparison unit and an energy storage device, wherein the positive electrode of the solar cell is electrically connected to the anode of the first diode, the negative electrode of the solar cell is grounded, and the cathode of the first diode is electrically connected to the target electrical equipment; the first transistor switch unit is electrically connected to the positive electrode of the solar cell, the second transistor switch unit is electrically connected to the electrical equipment, the first voltage collection unit is electrically connected to the first transistor switch unit, the second voltage collection unit is electrically connected to the energy storage device, the signal input end of the voltage comparison unit is electrically connected to the first voltage collection unit and the second voltage collection unit, the signal output end of the voltage comparison unit is electrically connected to the second transistor switch unit; the energy storage device is electrically connected to the second transistor switch unit.

2. The energy storage power supply circuit according to claim 1, characterized in that: The first transistor switch unit includes a first resistor, a second resistor, a first thyristor, a first field effect transistor and a second field effect transistor, wherein the first end of the first resistor is electrically connected to the positive electrode of the solar cell, and the second end of the first resistor is electrically connected to the anode of the first thyristor; the first end of the second resistor is electrically connected to the first end of the first resistor, and the second end of the second resistor is electrically connected to the gate of the first field effect transistor; the cathode of the first thyristor is electrically connected to the energy storage device and the second transistor switch unit, the control electrode of the first thyristor is electrically connected to the drain of the first field effect transistor; the source of the first field effect transistor is electrically connected to the anode of the first thyristor; the source of the second field effect transistor is grounded, the drain of the second field effect transistor is electrically connected to the drain of the first field effect transistor, and the gate of the second field effect transistor is electrically connected to the gate of the first field effect transistor.

3. The energy storage power supply circuit according to claim 2, characterized in that: The first transistor switch unit further includes a first capacitor, a first end of the first capacitor is electrically connected to the anode of the first thyristor, and a second end of the first capacitor is grounded.

4. The energy storage power supply circuit according to claim 2, characterized in that: The second transistor switch unit includes a second thyristor, an anode of the second thyristor is electrically connected to a cathode of the first thyristor, a cathode of the second thyristor is electrically connected to the target electrical device, and a control electrode of the second thyristor is electrically connected to a signal output end of the voltage comparison unit.

5. The energy storage power supply circuit according to claim 4, characterized in that: The first voltage acquisition unit includes a third resistor and a fourth resistor, wherein a first end of the third resistor is electrically connected to an anode of the first thyristor, and a second end of the third resistor is electrically connected to a signal input end of the voltage comparison unit; a first end of the fourth resistor is electrically connected to a second end of the third resistor, and a second end of the fourth resistor is grounded.

6. The energy storage power supply circuit according to claim 5, characterized in that: The second voltage acquisition unit includes a fifth resistor and a sixth resistor, wherein a first end of the fifth resistor is electrically connected to the energy storage device, and a second end of the fifth resistor is electrically connected to a signal input end of the voltage comparison unit; a first end of the sixth resistor is electrically connected to a second end of the fifth resistor, and a second end of the sixth resistor is grounded.

7. The energy storage power supply circuit according to claim 6, characterized in that: The second voltage acquisition unit further includes a second capacitor, a first end of the second capacitor is electrically connected to the first end of the sixth resistor, and a second end of the second capacitor is grounded.

8. The energy storage power supply circuit according to claim 6, characterized in that: The voltage comparison unit includes a comparator, a second diode and a third diode, the forward input terminal of the comparator is electrically connected to the second end of the fifth resistor, the reverse input terminal of the comparator is electrically connected to the second end of the third resistor, and the output terminal of the comparator is electrically connected to the control electrode of the second thyristor; the anode of the second diode is electrically connected to the anode of the first thyristor, and the cathode of the second diode is electrically connected to the positive input terminal of the comparator; the anode of the third diode is electrically connected to the energy storage device, and the cathode of the third diode is electrically connected to the positive input terminal of the comparator.

9. The energy storage power supply circuit according to claim 6, characterized in that: The energy storage device comprises a third capacitor, a first end of the third capacitor is electrically connected to the anode of the second thyristor, and a second end of the third capacitor is grounded.

10. The energy storage power supply circuit according to claim 2, characterized in that: The energy storage power supply circuit further includes a filter unit, a first end of the filter unit is electrically connected to the cathode of the first thyristor, and a second end of the filter unit is grounded.

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