AC / DC power supply management circuit

Abstract

The utility model discloses an AC / DC power supply management circuit comprising a selection switch, an AC conversion module, a first DC module, and a second DC module. Before use, the selection switch is operated according to the type of the input voltage, if the input voltage is AC input, the selection switch is operated to connect the AC conversion module with the second DC module, otherwise, the first DC module is connected with the second DC module. During use, the AC conversion module converts and reduces the input AC voltage and outputs the AC voltage, and the AC voltage is supplied to the sensor group for use and is supplied to the second DC module. The first direct-current module reduces the direct-current voltage of the input end, outputs the reduced direct-current voltage to the sensor group for use, and supplies the reduced direct-current voltage to the second direct-current module. And the second direct current module reduces the voltage output by the alternating current conversion module or the first direct current module twice to obtain two groups of different output voltages for subsequent chips and circuits to use. The device also has the advantages of simple structure, convenience in operation and easiness in implementation.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic power generation technical field especially relates to an alternating current, direct current power supply management circuit for sun tracking controller. BACKGROUND

[0002] In the photovoltaic power generation engineering field, the tracking support is provided with a photovoltaic panel and a sun tracking controller, the sun tracking controller controls the angle of the tracking support to make the photovoltaic panel obtain the maximum power generation. The power supply of the sun tracking controller is mostly provided by the energy storage battery pack (the power generated by the photovoltaic panel is stored in the energy storage battery pack), and the voltage is divided into alternating current power supply voltage and direct current power supply voltage due to different engineering design schemes. The existing sun tracking controller or intelligent communication box (the intermediate communication node for connecting the sun tracking controller and the control station) usually adopts a single power supply circuit design, when the power supply mode changes, the circuit design, proofing, and production need to be changed, which has long cycle, high cost, and low flexibility.

[0003] Therefore, the prior art needs to be further improved and perfected. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of the prior art and providing an alternating current, direct current power supply management circuit for sun tracking controller.

[0005] The utility model aims at overcoming the defects of the prior art and providing an alternating current, direct current power supply management circuit for sun tracking controller.

[0006] An alternating current and direct current power supply management circuit mainly comprises a selection switch, an alternating current conversion module, a first direct current module and a second direct current module. The alternating current conversion module comprises an alternating current input end and a first direct current output end. The first direct current module comprises a first direct current input end and a second direct current output end. The second direct current module comprises a second direct current input end, a third direct current output end and a fourth direct current output end.

[0007] Specifically, the alternating current input end is connected with the outside world to obtain the alternating voltage after the inversion of the energy storage battery pack. The first direct current input end is connected with the outside world to obtain the direct current voltage provided by the energy storage battery pack. The second direct current input end is connected with the first direct current output end or the second direct current output end through the selection switch. The output voltages of the third direct current output end and the fourth direct current output end are respectively supplied to different voltage chips on the mainboard. The voltage obtained by the second direct current input end also supplies power to the working devices (such as the sensor group) outside the mainboard.

[0008] Further, the alternating current conversion module mainly comprises an alternating current terminal, a first fuse, a pressure sensitive resistor, a first resistor, a first inductor, a transformer, a first chip, a second inductor and first to sixth capacitors.

[0009] Specifically, the first end of the transformer is connected to one end of the AC terminal through a first inductor, a first resistor and a first fuse in series, the second end is connected to one end of a first capacitor and one end of a voltage-dependent resistor, and the other end of the AC terminal, the third end is connected to the first end of a first chip, and the fourth end is connected to the third end of the first chip. The other end of the voltage-dependent resistor is connected between the first fuse and the first resistor. The other end of the first capacitor is connected between the first resistor and the first inductor. The fifth end of the first chip is connected to the seventh end through a second capacitor, the seventh end is connected to the fourteenth end through a third capacitor, the fourteenth end is connected to a first power ground through a fourth capacitor and a sixteenth end, the sixteenth end is connected to a first DC output end through a second inductor, and the first DC output end is connected to the first power ground through a fifth capacitor and a sixth capacitor.

[0010] Further, the first DC module mainly includes a second chip, a second fuse, a first diode, a second resistor, seventh to eleventh capacitors, a second diode, and a third inductor.

[0011] Specifically, the first DC input end is connected to the first end of the second chip through the second fuse. The first end of the second chip is connected to the fourth to eighth ends and a second power ground through the first diode, the seventh capacitor, the eighth capacitor, the ninth capacitor, and the tenth capacitor in parallel. The second end is connected to the third end through the third inductor, and the second end is also connected to the second power ground through the second diode. The second DC output end is connected to the second power ground through the second resistor and the eleventh capacitor. The third end of the second chip is connected to the connection between the second resistor and the eleventh capacitor.

[0012] Further, the second DC module mainly includes a third chip, a fourth chip, twelfth to eighteenth capacitors, a third resistor, a fourth inductor, and a third diode.

[0013] Specifically, the second DC input end is connected to the first end of the third chip. The first end of the third chip is connected to the fourth to eighth ends and ground through the twelfth capacitor, the thirteenth capacitor, and the fourteenth capacitor in parallel. The second end is connected to the third end through the fourth inductor, and the second end is also connected to ground through the third diode. The first end of the fourth chip is connected to ground, the second end is connected to the fourth end and the fourth DC output end through the fifteenth capacitor, the third end is connected to ground through the sixteenth capacitor and the seventeenth capacitor in parallel, the third end is also connected to the third DC output end and connected to ground through the third resistor and the eighteenth capacitor. The third end of the third chip is connected to the connection between the third resistor and the eighteenth capacitor.

[0014] Further, the selection switch further comprises a fourth resistor, the first end of the selection switch is connected with the first direct current output end, the second end is connected with the second direct current output end, the third end is connected with the first power ground, the fourth end is connected with the second power ground, the fifth end is grounded through the fourth resistor, and the sixth end is connected with the second direct current input end.

[0015] As a preferred scheme of the utility model, the second direct current module further comprises a fifth resistor and a light emitting diode.

[0016] As a preferred scheme of the utility model, the first diode is a transient suppression diode.

[0017] As a preferred scheme of the utility model, the second fuse is a self-restoring fuse.

[0018] The working process and principle of the utility model are as follows: before use, the selection switch is operated according to the type of input voltage, if it is AC input, the selection switch is operated to connect the AC conversion module with the second direct current module, and vice versa to connect the first direct current module with the second direct current module.

[0019] Compared with the prior art, the utility model still has the following advantages:

[0020] (1) the AC / DC power supply management circuit provided by the utility model adopts AC / DC circuit design, no matter which power supply mode is used in the front stage, the internal power supply demand can be met by operating the selection button, so that it is suitable for more occasions.

[0021] (2) the AC / DC power supply management circuit provided by the utility model adopts two power supply circuits to isolate the external sensor power supply and the internal chip power supply, effectively avoids the interference between the two, thereby improving the stability of the circuit. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the circuit principle diagram of the AC conversion module provided by the utility model.

[0023] Figure 2This is the circuit schematic diagram of the first DC module provided by this utility model.

[0024] Figure 3 This is the circuit schematic diagram of the second DC module provided by this utility model.

[0025] Figure 4 This is a partial circuit diagram of the second DC module provided by this utility model.

[0026] Figure 5 This is the circuit diagram of the selector switch provided by this utility model.

[0027] Explanation of the reference numerals in the above figures:

[0028] J1 - AC terminal, F1 - first fuse, MOV - varistor, R1 - first resistor, L1 - first inductor, L - transformer, U1 - first chip, L2 - second inductor, C1 to C6 - first to sixth capacitors.

[0029] U2 - Second chip, F2 - Second fuse, D1 - First diode, R2 - Second resistor, C7 to C11 - Seventh to eleventh capacitors, D2 - Second diode, L3 - Third inductor.

[0030] U3 - Third chip, U4 - Fourth chip, C12 to C18 - Twelfth to eighteenth capacitors, R3 - Third resistor, L4 - Fourth inductor, D3 - Third diode.

[0031] SW1 - Selector switch, R4 - Fourth resistor, R5 - Fifth resistor, LED - Light-emitting diode. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer and more explicit, the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0033] Example 1:

[0034] like Figures 1 to 5 As shown, this embodiment discloses an AC / DC power management circuit, mainly including a selection switch SW1, an AC conversion module, a first DC module, and a second DC module. The AC conversion module includes an AC input terminal and a first DC output terminal. The first DC module includes a first DC input terminal and a second DC output terminal. The second DC module includes a second DC input terminal, a third DC output terminal, and a fourth DC output terminal.

[0035] Specifically, the AC input end is connected with the outside world to obtain the AC voltage after the energy storage battery pack is inverted. The first DC input end is connected with the outside world to obtain the DC voltage provided by the energy storage battery pack. The second DC input end is connected with the first DC output end or the second DC output end through the selection switch SW1. The output voltages of the third DC output end and the fourth DC output end are respectively supplied to different voltage chips on the mainboard. The voltage obtained by the second DC input end also supplies power to the working devices (such as the sensor group) outside the mainboard.

[0036] Further, the AC conversion module mainly includes an AC terminal J1, a first fuse F1, a voltage-dependent resistor MOV (acting as a front-end AC overvoltage protection), a first resistor R1, a first inductor L1, a transformer L (two-stage AC voltage decoupling, that is, even if the front end is damaged, it is not easy to affect the rear end), a first chip U1, a second inductor L2, and first to sixth capacitors C1 to C6.

[0037] Specifically, the first end of the transformer L is connected to one end of the AC terminal J1 through the first inductor L1, the first resistor R1, and the first fuse F1 in series, the second end is connected with the first end of the first capacitor, the one end of the voltage-dependent resistor MOV, and the other end of the AC terminal J1 respectively, the third end is connected with the first end of the first chip U1, and the fourth end is connected with the third end of the first chip U1. The other end of the voltage-dependent resistor MOV is connected between the first fuse F1 and the first resistor R1. The other end of the first capacitor is connected between the first resistor R1 and the first inductor L1. The fifth end of the first chip U1 is connected to the seventh end through the second capacitor, the seventh end is connected to the fourteenth end through the third capacitor, the fourteenth end is connected to the first power ground through the fourth capacitor and the sixteenth end, the sixteenth end is connected to the first DC output end through the second inductor L2, and the first DC output end is connected to the first power ground through the fifth capacitor and the sixth capacitor respectively.

[0038] Further, the first DC module mainly includes a second chip U2, a second fuse F2, a first diode D1, a second resistor R2, seventh to eleventh capacitors C7 to C11, a second diode D2, and a third inductor L3.

[0039] Specifically, the first DC input end is connected with the first end of the second chip U2 through the second fuse F2. The first end of the second chip U2 is connected to the fourth to eighth ends and the second power ground through the first diode D1, the seventh capacitor, the eighth capacitor, the ninth capacitor, and the tenth capacitor in parallel connection. The second end is connected with the third end through the third inductor L3, and the second end is also connected to the second power ground through the second diode D2. The second DC output end is connected to the second power ground through the second resistor R2 and the eleventh capacitor. The third end of the second chip U2 is connected to the connection point of the second resistor R2 and the eleventh capacitor.

[0040] Further, the second DC module mainly comprises a third chip U3, a fourth chip U4, twelfth to eighteenth capacitors C12 to C18, a third resistor R3, a fourth inductor L4 and a third diode D3.

[0041] Specifically, the second DC input end is connected with a first end of the third chip U3. The first end of the third chip U3 is connected with the fourth to eighth ends and the ground through the twelfth capacitor, the thirteenth capacitor and the fourteenth capacitor connected in parallel and connected in series, a second end is connected with a third end through the fourth inductor L4, and the second end is grounded through the third diode D3. A first end of the fourth chip U4 is grounded, a second end is connected with the fourth end and the fourth DC output end and then grounded through the fifteenth capacitor, a third end is grounded through the sixteenth capacitor and the seventeenth capacitor connected in parallel, and the third end is connected with the third DC output end and grounded through the third resistor R3 and the eighteenth capacitor in series. The third end of the third chip U3 is connected with the connection point of the third resistor R3 and the eighteenth capacitor.

[0042] Further, the selection switch SW1 further comprises a fourth resistor R4, a first end of the selection switch SW1 is connected with the first DC output end, a second end is connected with the second DC output end, a third end is connected with the first power ground, a fourth end is connected with the second power ground, a fifth end is grounded through the fourth resistor R4, and a sixth end is connected with the second DC input end. The second DC module is connected with the AC conversion module or the first DC module by operating the selection switch SW1.

[0043] As a preferred scheme of the utility model, the second DC module further comprises a fifth resistor R5 and a light emitting diode LED. The fourth DC output end is grounded through the fifth resistor R5 and the light emitting diode LED.

[0044] As a preferred scheme of the utility model, the first diode D1 is set as a transient suppression diode.

[0045] As a preferred scheme of the utility model, the second fuse F2 is a self-recovery fuse.

[0046] The working process and principle of the utility model are: before use, according to the type of input voltage to operate the selection switch SW1, if alternating current input, then operating the selection switch SW1 makes the alternating current conversion module connect with the second direct current module, otherwise makes the first direct current module connect with the second direct current module. When using, the alternating current conversion module converts and step-down the input alternating current voltage and then outputs, on one hand supplies the sensor group to use, on the other hand supplies the second direct current module. The first direct current module then outputs the input direct current voltage to the sensor group to use after step-down, simultaneously also supplies the second direct current module. And the second direct current module gets two groups of different output voltages through twice step-down of the voltage outputted by the alternating current conversion module or the first direct current module, to supply the subsequent chip, circuit to use. The utility model also has the advantages of simple structure, convenient operation, easy implementation.

[0047] The above embodiment is the preferred embodiment of the utility model, but the embodiment of the utility model is not limited by the above embodiment, and any change, modification, replacement, combination, simplification, which does not deviate from the spirit and principle of the utility model, should be equivalent replacement mode, all are included in the protection scope of the utility model.

Claims

1. An AC-DC power management circuit, characterized by, The application relates to a power supply device, which comprises a selection switch, an AC conversion module, a first DC module and a second DC module; the AC conversion module comprises an AC input end and a first DC output end; the first DC module comprises a first DC input end and a second DC output end; the second DC module comprises a second DC input end, a third DC output end and a fourth DC output end; The AC input end is connected with the outside world to obtain AC voltage converted by a storage battery pack; the first DC input end is connected with the outside world to obtain DC voltage provided by the storage battery pack; the second DC input end is connected with the first DC output end or the second DC output end through the selection switch; the output voltages of the third DC output end and the fourth DC output end are respectively supplied to different voltage chips on a mainboard; and the voltage obtained by the second DC input end also supplies power to working devices outside the mainboard.

2. The AC-DC power management circuit of claim 1, wherein, The AC conversion module comprises an AC terminal, a first fuse, a pressure-sensitive resistor, a first resistor, a first inductor, a transformer, a first chip, a second inductor and first to sixth capacitors; The first end of the transformer is connected to one end of the AC terminal through the first inductor, the first resistor and the first fuse in series, the second end is connected with one end of the first capacitor, one end of the pressure-sensitive resistor and the other end of the AC terminal respectively, the third end is connected with the first end of the first chip, and the fourth end is connected with the third end of the first chip; the other end of the pressure-sensitive resistor is connected between the first fuse and the first resistor; the other end of the first capacitor is connected between the first resistor and the first inductor; the fifth end of the first chip is connected to the seventh end through the second capacitor, the seventh end is connected to the fourteenth end through the third capacitor, the fourteenth end is connected to the first power ground through the fourth capacitor and the sixteenth end, the sixteenth end is connected to the first DC output end through the second inductor, and the first DC output end is connected to the first power ground through the fifth capacitor and the sixth capacitor.

3. The AC-DC power management circuit of claim 1, wherein, The first DC module comprises a second chip, a second fuse, a first diode, a second resistor, seventh to eleventh capacitors, a second diode and a third inductor; The first end of the second chip is connected with the first DC input end through the second fuse; the first end of the second chip is connected to the fourth to eighth ends and the second power ground through the first diode, the seventh capacitor, the eighth capacitor, the ninth capacitor and the tenth capacitor in parallel connection; the second end is connected with the third end through the third inductor, and the second end is also connected to the second power ground through the second diode; the second DC output end is connected to the second power ground through the second resistor and the eleventh capacitor; and the third end of the second chip is connected to the connection position of the second resistor and the eleventh capacitor.

4. The AC / DC power management circuit of claim 1, wherein, The second DC module comprises a third chip, a fourth chip, twelfth to eighteenth capacitors, a third resistor, a fourth inductor and a third diode; The second direct current input end is connected with the first end of the third chip; the first end of the third chip is connected with the fourth to eighth ends and the ground through the twelfth, thirteenth and fourteenth capacitors connected in parallel and then connected in series; the second end is connected with the third end through the fourth inductor, and is also connected with the ground through the third diode; the first end of the fourth chip is connected with the ground, the second end is connected with the fourth end and the fourth direct current output end and then connected with the ground through the fifteenth capacitor, the third end is connected with the ground through the sixteenth and seventeenth capacitors connected in parallel, and the third end is also connected with the third direct current output end and connected with the ground through the third resistor and the eighteenth capacitor in series; the third end of the third chip is connected with the connection point of the third resistor and the eighteenth capacitor.

5. The AC / DC power management circuit of claim 1, wherein, The selection switch further comprises a fourth resistor, the first end of the selection switch is connected with the first direct current output end, the second end is connected with the second direct current output end, the third end is connected with the first power ground, the fourth end is connected with the second power ground, the fifth end is connected with the ground through the fourth resistor, and the sixth end is connected with the second direct current input end; the selection switch is operated to realize the connection of the second direct current module with the alternating current conversion module or the first direct current module.

6. The AC / DC power management circuit of claim 4, wherein, The second direct current module further comprises a fifth resistor and a light emitting diode; the fourth direct current output end is connected with the ground through the fifth resistor and the light emitting diode.

7. The AC / DC power management circuit of claim 3, wherein, The first diode is a transient suppression diode.

8. The AC / DC power management circuit of claim 3, wherein, The second fuse is a self-recovery fuse.

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