Solar charging controller based on MPPT

Abstract

The utility model discloses a solar charging controller based on MPPT, and the controller comprises a solar panel and a controller, the solar panel is arranged on a supporting plate, the supporting plate comprises a first fixing plate and a second fixing plate which are rotatably connected, and the sides, away from the solar panel, of the first fixing plate and the second fixing plate are each provided with an angle adjusting mechanism. The angle adjusting mechanism is used for adjusting the opening angle of the supporting plate, the controller comprises a DC-DC booster circuit, an MPPT single-chip microcomputer control circuit and a battery charging circuit, and the solar panel is electrically connected with the controller. The angle of the solar panel can be adjusted through the angle adjusting mechanism arranged on the back face of the supporting plate, the solar panel can be adjusted to be at a proper angle to absorb solar energy, the supporting plate can be folded, the solar panel can be protected after being folded, the angle adjusting mechanism can be stored in the supporting plate during storage, the occupied space is small, and carrying is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of solar panels, and in particular to a solar charging controller based on MPPT. Background Art

[0002] Solar panels use the photovoltaic effect to convert sunlight directly into electrical energy, and can be used to charge electrical devices such as electric vehicles, batteries or mobile phones when traveling or playing. Existing solar panels are fixed and supported by brackets, but the angle of the solar panels cannot be adjusted according to the angle of sunlight, which will reduce its energy collection ability and the utilization rate of solar energy, resulting in reduced charging efficiency. Summary of the invention

[0003] This application provides a solar charge controller based on MPPT to solve the problem that the solar panel cannot adjust the angle of the solar panel according to the angle of sunlight, and adopts the following solution:

[0004] A solar charging controller based on MPPT comprises a solar panel and a controller, wherein the solar panel is arranged on a supporting plate, the supporting plate comprises a rotatably connected fixed plate 1 and a fixed plate 2, the fixed plate 1 and the fixed plate 2 are respectively provided with angle adjustment mechanisms on a side away from the solar panel, the angle adjustment mechanisms are used to adjust the opening angle of the supporting plate, the solar panel is electrically connected to the controller, the controller comprises a DC-DC boost circuit, an MPPT single-chip control circuit and a battery charging circuit, the solar panel is connected to a load through the DC-DC boost circuit and the battery charging circuit, the MPPT single-chip control circuit is connected between the solar panel and the DC-DC boost circuit, the DC-DC boost circuit is used to boost the voltage output by the solar panel, the battery charging circuit is used to transmit the voltage output by the DC-DC boost circuit to the load, thereby completing charging, and the MPPT single-chip control circuit is used to adjust the duty cycle of the PWM drive signal of the DC-DC boost circuit according to the changes in the output current and voltage of the solar panel, so as to achieve the maximum output of the solar panel.

[0005] Preferably, the fixing plate 1 and the fixing plate 2 are respectively provided with a receiving groove for receiving the angle adjustment mechanism.

[0006] Further preferably, the angle adjustment mechanism includes a support portion 1, and a support portion 2 whose two ends are rotatably connected to the support portion 1 and one end of the accommodating groove.

[0007] Further preferably, the support part 1 is provided with a groove for accommodating the support part 2, and the support part 2 comprises a shell and a telescopic part with one end capable of telescopically sliding in the shell.

[0008] Further preferably, at least one elastic member is provided in the shell, and both ends of the elastic member are respectively connected to the telescopic part and the shell, the telescopic part is provided with an adjustment component, and the shell is provided with a plurality of limiting holes matching the adjustment component; the adjustment component can be clamped in different limiting holes to achieve different angles of inclination of the solar panel.

[0009] Further preferably, the adjustment component includes an adjustment block and a second elastic member, a receiving hole is further provided at one end of the telescopic portion, the adjustment component is arranged in the receiving hole, and both ends of the second elastic member are respectively connected to the receiving hole and the adjustment block.

[0010] Preferably, it also includes a locking assembly, which includes a locking hole 1 and a locking hole 2 respectively arranged on the adjacent sides of the fixing plate 1 and the fixing plate 2, and the locking hole 1 is coaxially arranged with the locking hole 2; the locking assembly can lock the fixing plate 1 and the fixing plate 2 after opening to ensure the overall stability.

[0011] Further preferably, the locking assembly further comprises a limit pin arranged in the locking hole one, and an elastic member three is provided between the limit pin and the locking hole one.

[0012] Further preferably, a slot communicating with the locking hole 1 is provided on the fixing plate 1, a bayonet is connected to the limiting pin, and the slot is used to limit the bayonet.

[0013] The beneficial effects of this application are:

[0014] (1) The solar panel is arranged on a support plate, and the support plate is foldable to protect the solar panel and improve safety; an angle adjustment mechanism is arranged on the back of the support plate to adjust the tilt angle of the solar panel. When in use, the solar panel can be adjusted to a suitable angle to absorb solar energy by adjusting the angle adjustment mechanism.

[0015] (2) When storage is required, the angle adjustment mechanism can be stored in the support plate. The support part 1 can be stored in the support plate through the elastic member 1 in the support part 2, so that the angle adjustment mechanism can be stored in the support plate, reducing the overall occupied space and facilitating carrying.

[0016] (3) A locking assembly is provided on the support plate. When the support plate is opened, the locking assembly can ensure the overall stability and will not collapse or tip over. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first unfolded stereoscopic schematic diagram of the present application;

[0018] Figure 2 is a second expanded stereoscopic schematic diagram of the present application;

[0019] Figure 3 is a half-section view of the angle adjustment mechanism of the present application after it is stored;

[0020] Figure 4 It is a partial enlarged view of point A of this application;

[0021] Figure 5 It is a three-dimensional schematic diagram of the present application when it is stored and folded;

[0022] Figure 6 It is a partial enlarged view of point B of this application;

[0023] Figure 7 It is a system block diagram of the MPPT-based solar charging controller described in the embodiment of the present application.

[0024] In the figure:

[0025] 1. Fixing plate 1, 2. Fixing plate 2, 3. Solar panel, 4. Accommodating groove, 5. Angle adjustment mechanism, 50. Support part 1, 51. Shell, 52. Telescopic part, 500. Groove, 510. Elastic part 1, 511. Limiting hole, 520. Elastic part 2, 521. Adjusting block, 522. Accommodating hole, 60. Limiting pin, 61. Locking hole 1, 62. Locking hole 2, 63. Slot, 64. Pin, 65. Elastic part 3, 7. Handle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described in the present application are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0027] Combination Figures 1 to 7 , further illustrating the present application, a solar charging controller based on MPPT includes a solar panel 3 and a controller, wherein the solar panel 3 is arranged on a support plate, wherein the support plate includes a rotatably connected fixed plate 1 and a fixed plate 2, wherein the fixed plate 1 and the fixed plate 2 are respectively provided with an adjustment mechanism on a side away from the solar panel 3, wherein the angle adjustment mechanism 5 is used to adjust the opening angle of the support plate, wherein the solar panel 3 is electrically connected to the controller, wherein the controller is an MPPT controller, and the MPPT controller can detect the power generation voltage of the solar panel 3 in real time, and track the highest voltage and current values, and charge with maximum power output, specifically, the controller includes a DC-DC boost circuit, an MPPT single chip microcomputer control circuit and a battery charging circuit, such as Figure 7As shown, the solar panel and the load are connected through the DC-DC boost circuit and the battery charging circuit, the MPPT single-chip control circuit is connected between the solar panel and the DC-DC boost circuit, the DC-DC boost circuit is used to boost the voltage output by the solar panel, the battery charging circuit is used to transmit the voltage output by the DC-DC boost circuit to the load, thereby completing charging, and the MPPT single-chip control circuit is used to adjust the duty cycle of the PWM drive signal of the DC-DC boost circuit according to the changes in the output current and voltage of the solar panel, so that the equivalent resistance of the DC-DC boost circuit is always equal to the internal resistance of the solar panel, thereby achieving the maximum output of the solar panel.

[0028] Combination Figure 2 , the fixing plate 1 and the fixing plate 2 2 are respectively provided with a receiving groove 4 for receiving the angle adjustment mechanism 5 on the same side; the fixing plate 1 1 is rotatably connected to the fixing plate 2 2, and in this embodiment, the rotatable connection can be achieved through a hinge or a flexible connection part; when the angle adjustment mechanism 5 is folded, the angle adjustment mechanism 5 will be stored back in the receiving groove 4 to reduce the overall volume after storage and facilitate carrying.

[0029] In order to enable the solar panel 3 to better absorb solar energy, the angle adjustment mechanism 5 includes a support part 1 50, and a support part 2 whose two ends are rotatably connected to the support part 1 50 and one end of the accommodating groove 4 respectively, one end of the support part 1 50 is rotatably connected to the other end of the accommodating groove 4, and the support part 1 50 is also provided with a groove 500 for accommodating the support part 2; specifically, the support part 2 includes a shell 51, and a telescopic part 52 whose one end can be telescopically slid in the shell 51, the other end of the telescopic part 52 is rotatably connected to the accommodating groove 4, and one end of the shell 51 is rotatably connected to the groove 500. After storage, the telescopic part 52 will retract into the shell 51, and the shell 51 will be stored back into the groove 500.

[0030] Combination Figure 3 and Figure 4 The shell 51 is also provided with at least one elastic member 510 for pulling the telescopic portion 52 back into the shell 51, wherein the elastic member 510 can be a spring; the two ends of the elastic member 510 are respectively connected to the telescopic portion 52 and the shell 51, and when the angle adjustment mechanism 5 needs to be retracted, the elastic member 510 will pull the telescopic portion 52 back into the shell 51, and the shell drives the support portion 50 to be retracted into the receiving groove 4. The elastic member 510 can ensure that the angle adjustment mechanism 5 will not fall out of the receiving groove 4 after being retracted.

[0031] It should be noted that the elastic member 510 is in a stretched state between the shell 51 and the telescopic portion 52 . After being stored, the elastic member 510 is still in a stretched state, thereby ensuring that the angle adjustment mechanism 5 will not fall out of the accommodating groove 4 .

[0032] Combination Figure 4 , an adjustment component is further provided on one end of the telescopic portion 52 in the shell 51, and a plurality of limiting holes 511 cooperating with the adjustment component are provided on the shell 51, and the adjustment component is stuck in different limiting holes 511 to achieve different angle adjustments of the solar panel 3, wherein the adjustment component includes an adjustment block 521 and a second elastic member 520, and in this embodiment, the second elastic member 520 can be a spring; a receiving hole 522 is further provided on one end of the telescopic portion 52, and the adjustment component is arranged in the receiving hole 522, and the two ends of the second elastic member 520 are respectively connected to the receiving hole 522 and the adjustment block 521;

[0033] When in use, the end of the adjustment block 521 rests against the inner wall of the shell 51, and the second elastic member 520 is compressed. When the adjustment block 521 moves to the limiting hole 511, the second elastic member 520 pushes the adjustment block 521 out and clamps it in the limiting hole 511 to fix the solar panel 3; when it needs to be stored, the adjustment block 521 is pressed to retract the adjustment block 521 into the accommodating hole 522, and the telescopic part 52 can continue to telescope in the shell 51 to store the angle adjustment mechanism 5.

[0034] Combination Figure 3 and Figure 6 The support plate also includes a locking assembly, which can ensure the overall stability after the support plate is opened; the locking assembly includes a locking hole 61 and a locking hole 62 opened on the adjacent side of the fixing plate 1 and the fixing plate 2, the locking hole 61 and the locking hole 62 are coaxially arranged, and a limit pin 60 is also arranged in the fixing plate 1, and the limit pin 60 can be slidably arranged in the locking hole 61, and the limit hole 511 is provided with a connection to the limit pin 60. The elastic member three 65 between the pin 60 and the limiting hole 511, when in use, the elastic member three 65 will push out the limiting pin 60, insert it into the locking hole two 62, and fix the fixing plate one 1 and the fixing plate two 2, wherein the elastic member three 65 can be a spring; the fixing plate one 1 is provided with a slot 63 connected to the limiting hole 511 two, and the limiting pin 60 is provided with a bayonet 64, and the bayonet 64 can be stuck in the slot 63, thereby limiting the position of the limiting pin 60.

[0035] The fixing plate 1 and the fixing plate 2 are also provided with handles 7 respectively, and after being stored, the handles 7 can be used for convenient picking up and carrying.

Claims

1. MPPT-based solar charge controller, characterized by: The invention comprises a solar panel and a controller, wherein the solar panel is arranged on a support plate, the support plate comprises a rotatably connected fixed plate 1 and a fixed plate 2, the fixed plate 1 and the fixed plate 2 are respectively provided with an angle adjustment mechanism on a side away from the solar panel, the angle adjustment mechanism is used to adjust the opening angle of the support plate, the solar panel is electrically connected to the controller, the controller comprises a DC-DC boost circuit, an MPPT single-chip control circuit and a battery charging circuit, the solar panel is connected to a load through the DC-DC boost circuit and the battery charging circuit, the MPPT single-chip control circuit is connected between the solar panel and the DC-DC boost circuit, the DC-DC boost circuit is used to boost the voltage output by the solar panel, the battery charging circuit is used to transmit the voltage output by the DC-DC boost circuit to the load, thereby completing charging, and the MPPT single-chip control circuit is used to adjust the duty cycle of the PWM drive signal of the DC-DC boost circuit according to the changes in the output current and voltage of the solar panel, so as to achieve the maximum output of the solar panel.

2. The MPPT-based solar charge controller according to claim 1, characterized in that: The first fixing plate and the second fixing plate are respectively provided with accommodating grooves for accommodating the angle adjustment mechanism.

3. The MPPT-based solar charge controller according to claim 2, characterized in that: The angle adjustment mechanism includes a support portion 1 and a support portion 2 whose two ends are respectively rotatably connected to the support portion 1 and one end of the accommodating groove.

4. The MPPT-based solar charge controller according to claim 3, characterized in that: The first support part is provided with a groove for accommodating the second support part. The second support part comprises a shell and a telescopic part with one end capable of telescopically sliding in the shell.

5. The MPPT-based solar charge controller according to claim 4, characterized in that: At least one elastic member 1 is also provided in the shell, and two ends of the elastic member 1 are respectively connected to the telescopic part and the shell, the telescopic part is provided with an adjustment component, and the shell is provided with a plurality of limiting holes matching the adjustment component.

6. The MPPT-based solar charge controller according to claim 5, characterized in that: The adjustment component includes an adjustment block and a second elastic member. A receiving hole is further provided at one end of the telescopic portion. The adjustment component is arranged in the receiving hole. Both ends of the second elastic member are respectively connected to the receiving hole and the adjustment block.

7. The MPPT-based solar charge controller according to claim 1, characterized in that: It also includes a locking assembly, which includes a locking hole 1 and a locking hole 2 respectively arranged on one side adjacent to the fixing plate 1 and the fixing plate 2, and the locking hole 1 is coaxially arranged with the locking hole 2.

8. The MPPT-based solar charge controller according to claim 7, characterized in that: The locking assembly also includes a limit pin arranged in the locking hole one, and an elastic member three is provided between the limit pin and the locking hole one.

9. The MPPT-based solar charge controller according to claim 8, characterized in that: The fixing plate 1 is provided with a slot communicating with the locking hole 1, the limiting pin is connected with a locking pin, and the slot is used to limit the locking pin.

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