Solar powered DC load system

• US 8,004,233 B2
• Filed: 10/11/2010
• Issued: 08/23/2011
• Est. Priority Date: 03/17/2009
• Status: Active Grant

• Current Assignee: Min Carroll
• Original Assignee: Min Carroll
• Inventors: Carroll, Min
• Primary Examiner(s): Tso; Edward
• Assistant Examiner(s): Fantu; Yalkew
• Application Number:
  US12/902,110
• Publication Number:
  US 20110156479A1
• Time in Patent Office: 316 Days
• Field of Search: 320/101
• US Class Current: 320/101
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: H02S 10/00 PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

The solar powered direct current (DC) load system is a reliable, versatile and user friendly system; it uses solar energy and rechargeable battery powering at least one type of DC load which are: a type of motor operation such as water pump and/or a type of at least one LED; the system comprises a battery discharge control circuit and a battery output circuit for DC load (FIG. 1), at least one rechargeable battery source (42-F1) which is protected by a preset voltage that limits the lowest discharge level, the circuits in the FIG. 1 are able to combine the circuits in FIG. 2 and FIG. 3 which enable operations of the day time and night time DC load to synchronize the day and night cycles; FIG. 4 is a combination system which incorporates circuits in the FIG. 1 and FIG. 2 to create a water pumping system combined an illumination system which can turn on and off automatically; FIG. 4a with a switch and additional LEDs in addition to the FIG. 4; FIG. 5 is a combination system that incorporates circuits in the FIG. 1 and FIG. 3 to create a water pumping system that works during the day and shuts down at night automatically; FIG. 5a with a switch in addition to the FIG. 5; FIG. 6 is a combination system which incorporates FIG. 1 and FIG. 2 circuits to create an illumination system that has at least one LED which can turn off in the morning and turn on at the evening automatically.

Claims

1. The solar powered water pump and an illumination system has the capability to create a combination system by selected circuit(s) or component(s) basically from the battery protection circuits and synchronized day and night cycles for night time DC load system, the combination system includes a type of motor operation having at least a water pumping system combined with an illumination system, the combination system comprising:

(a) a battery discharge control circuit comprising a preset voltage that is determined by components of a zener diode and an input of a normally open solid state relay, a nominal voltage that is nominated by at least one rechargeable battery source;

wherein said components of said preset voltage are connected to each other in series then directly, or through at least one diode in series, coupled to at least one rechargeable battery source in parallel, wherein said preset voltage is substantially equal to or greater than the nominal voltage of said rechargeable battery source,

wherein said zener diode has the capability to be replaced by a substitutive component;

wherein said preset voltage means that when the input voltage drops out of the low end control range of the input of the normally open solid state relay and reaches the preset voltage level, an output of the normally open solid state relay opens up and disconnects at least one type of direct current load to access the rechargeable battery source, the preset voltage is the lowest level that the rechargeable battery source is discharged;

wherein said rechargeable battery source includes at least one rechargeable battery or at least one rechargeable battery pack;

(b) a control circuit for night time DC load comprising a predetermined voltage that is determined by at least input of a normally closed solid state relay, which is connected in series to a diode then coupled to, or directly coupled to at least one solar panel in parallel which is synchronizing the day and night cycles for the night time DC load;

(c) combined a battery output circuit for DC load to a charging battery circuit comprising at least one rechargeable battery source of said battery discharge control circuit connected in parallel to, or through a first diode to an output of said normally open solid state relay of said battery discharge control circuit, at least one type of DC load connected in series to a negative pole/terminal of said output of said normally open solid state relay;

the at least one system solar panel connected in parallel to and charges the at least one rechargeable battery source through an anti-reverse power diode while connected in parallel directly to, or through said first diode to, said output of said normally open solid state relay of said battery discharge control circuit and said at least one type of DC load;

wherein said combined battery output circuit for DC load to the charging battery circuit means that the at least one type of DC load may receive a partial or full or non power from the system solar panel or the rechargeable battery source which depends upon the system solar panel output power and the rechargeable battery source capacity and sun light conditions;

(d) combined a battery output circuit for DC load to an output circuit for night time DC load comprising at least one rechargeable battery source connected in parallel to, or through said first diode, said output of said normally open solid state relay of said battery discharge control circuit, an output of said normally closed solid state relay of said control circuit for night time DC load is connected in series directly or through second diode to a negative pole of said output of said normally open solid state relay, and at least one type of DC load connected directly or indirectly to a negative pole/terminal of said output of said normally closed solid state relay;

wherein said input of said normally open solid state relay has the capability to be replaced by an input of a functionally interchangeable device, where each of said normally open solid state relay or said functionally interchangeable device has the input of positive and negative control poles/terminals, and the output of positive and negative poles/terminals, wherein said output of said normally open solid state relay has the capability to be replaced by said output of said functionally interchangeable device;

wherein said input of said normally closed solid state relay has the capability to be replaced by an input of a normally closed device, where each of said solid state relay or said normally closed device has the input of positive and negative control poles/terminals, and the output of positive and negative poles/terminals, wherein said output of said normally closed solid state relay has the capability to be replaced by said output of said normally closed device.

2. The solar powered water pump and an illumination system of claim 1 further comprising a double pole double throw switch which has three modes:

disconnect at least one type of DC load that includes a type of motor operation having at least a water pump to access the at least one rechargeable battery source and the at least one system solar panel through an anti-reverse diode, the first diode or directly to the output of the normally open solid state relay while simultaneously connecting to said type of DC load of at least one light emitting diode of a group 2 LED to the rechargeable battery source through said first diode, or directly connected to said output of said normally open solid state relay, then connected to, or through said a second diode connected to said output of said normally closed solid state relay or non-connected to either the water pump nor the group 2 LED.

3. The solar powered water pump and an illumination system of claim 1, wherein said synchronizing the day and night cycles for night time DC load means that when at least one solar panel connected in parallel to the input of the normally closed solid state relay or the input of the normally closed device, the input of the normally closed solid state relay or the input of the normally closed device prevents the at least one system solar panel and the at least one rechargeable battery source to access the at least one type of DC load including a group 1 LED and the group 2 LED in the early morning through the day, but connected the at least one rechargeable battery source to the at least one type of DC load at evening through the night, therefore the output of the normally closed solid state relay or the output of the normally closed device is opened in the early morning through the day, the at least one type of DC load cannot receive power, the output of the normally closed solid state relay or the output of the normally closed device is closed at evening through the night, the at least one type of DC load including the group 1 LED and the group 2 LED received power for illumination.

8. The solar powered water pump and an illumination system of claim 1, wherein said substitutive component for said zener diode of said battery discharge control circuit, further including a light emitting diode.

9. The solar powered water pump and an illumination system of claim 1, wherein said substitutive component for said zener diode of said battery discharge control circuit, further including a resistor.

10. The solar powered water pump and an illumination system of claim 1, wherein said functionally interchangeable device for said normally open solid state relay further including a normally open I/O, input/output, module.

11. The solar powered water pump and an illumination system of claim 1, wherein said functionally interchangeable device for said normally open solid state relay further including a normally open relay.

12. The solar powered water pump and an illumination system of claim 1, wherein said functionally interchangeable device for said normally open solid state relay further including an opto-coupler or opto-isolator respectively.

13. The solar powered water pump and an illumination system of claim 1, wherein said normally closed device for replacing said normally closed solid state relay further including a normally closed I/O, input/output, module.

14. The solar powered water pump and an illumination system of claim 1, wherein said normally closed device for replacing said normally closed solid state relay further including a normally closed relay.

15. The solar powered water pump and an illumination system of claim 1 wherein said normally closed device for replacing said normally closed solid state relay further including an opto-coupler or an opto-isolator respectively.

16. The solar powered water pump and an illumination system of claim 1 wherein said predetermined voltage further determined by one of following functionally interchangeable components:

a zener diode, a light emitting diode or a resistor connected in series directly or indirectly to said input of said normally closed solid state relay or said input of said normally closed device for adjusting the predetermined voltage up to the voltage of a system solar panel if the input voltage of said normally closed solid state relay or the input voltage of said normally closed device is less than the voltage of said system solar panel.

17. The solar powered water pump and an illumination system of claim 1 wherein said at least one solar panel of said control circuit for night time DC load further including at least one system solar panel or a standalone solar panel connected in parallel directly or indirectly to said input of said normally closed solid state relay or said input of said normally closed device for synchronizing the day and night cycles for the night time DC load.

4. The solar powered water pump and an illumination system has the capability to create a combination system which selected circuit(s) or component(s) basically from the battery protection circuits and synchronized day and night cycles for day time DC load system to create a motor operation system having at least a water pump which works during the day and shuts off at night automatically, the combination system comprising:

(a) a battery discharge control circuit comprising a preset voltage that is determined by components of a zener diode and an input of a normally open solid state relay, a nominal voltage that is nominated by at least one rechargeable battery source, wherein said components of said preset voltage are connected to each other in series then directly, or through at least one diode in series, coupled to at least one rechargeable battery source in parallel;

wherein said preset voltage is substantially equal to or greater than the nominal voltage of said rechargeable battery source;

wherein said preset voltage means when the input voltage drops out of the low end control range of the input of the normally open solid state relay and reaches the preset voltage level, an output of the normally open solid state relay opens up and disconnects at least one type of direct current load to access the rechargeable battery source, the preset voltage is the lowest level that the rechargeable battery source discharged;

wherein said zener diode has the capability to be replaced by a substitutive component;

wherein said rechargeable battery source includes at least one rechargeable battery or at least one rechargeable battery pack;

(b) a control circuit for day time DC load comprising a predetermined voltage that is determined by at least input of a normally open solid state relay, which is connected in series to a diode then coupled to, or directly coupled to at least one solar panel in parallel which is synchronizing the day and night cycles for day time DC load;

(c) combined a battery output circuit for DC load to an output circuit for day time DC load and a charging battery circuit, comprising at least one rechargeable battery source of said battery discharge control circuit and is connected in parallel to, or through a first diode to, an output of said normally open solid state relay of said battery discharge control circuit, an output of said normally open solid state relay of said control circuit for day time DC load is connected in series to a negative pole/terminal of said output of said normally open solid state relay of said battery discharge control circuit directly or through a second diode, at least one type of the DC load connected in series directly or indirectly to a negative pole/terminal of said output of said normally open solid state relay of said control circuit for day time DC load;

the at least one system solar panel connected in parallel to and charges the at least one rechargeable battery source through an anti-reversed power diode while connected in parallel to said at least one type of the DC load through said first diode, or directly connected to said output of said normally open solid state relay of said battery discharge control circuit, then connected to, or through said second diode to, said output of said normally open solid state relay of said output circuit for day time DC load;

the swapped connection between said output of said normally open solid state relay of said control circuit for day time DC load and said output of said normally open solid state relay of said battery discharge control circuit operates with equal efficacy in the combined battery output circuit for DC load to the output circuit for day time DC load and the charging battery circuit;

wherein said combined battery output circuit for DC load to the output circuit for day time DC load and the charging battery circuit means that the at least one type of DC load may receive a partial or full or non power from the system solar panel or the rechargeable battery source which depends upon the system solar panel output power and the rechargeable battery source capacity and sun light conditions;

wherein said input of said normally open solid state relay of said battery discharge control circuit has the capability to be replaced by an input of a functionally interchangeable device, where each of said normally open solid state relay of said battery discharge control circuit or said functionally interchangeable device has the input of positive and negative control poles/terminals, and the output of positive and negative poles/terminals, said output of said normally open solid state relay of said battery discharge control circuit has the capability to be replaced by said output of said functionally interchangeable device;

wherein said input of said normally open solid state relay of said control circuit for day time DC load has the capability to be replaced by an input of a normally open device, where each of said normally open solid state relay of said control circuit for day time DC load or said normally open device has the input of positive and negative control poles/terminals, and the output of positive and negative poles/terminals, wherein said output of said normally open solid state relay of said output circuit for day time DC load has the capability to be replaced by said output of said normally open device.

5. The solar powered water pump and an illumination system of claim 4, wherein said synchronizing the day and night cycles for day time DC load means that when the at least one solar panel connected in parallel to the input of the normally open solid state relay or the input of the normally open device of said control circuit for day time DC load and may connect directly or through the diode, the input of the normally open solid state relay or the input of the normally open device prevents the rechargeable battery source to access the at least one type of the DC load that includes type of motor operation having at least a water pump at evening through the night but is connected the system solar panel and the rechargeable battery source to the at least one type of the DC load in the early morning through the day, therefore the output of the normally open solid state relay or the normally open device of said control circuit for day time DC load is closed in the early morning through the day time, the at least one type of the DC load received power from the system solar panel and the rechargeable battery source to operate;

the output of the normally open solid state relay or the normally open device is opened at evening through the night time, the at least one type of the DC load cannot receive power to operate.

18. The solar powered water pump and an illumination system of claim 4 further comprising a single pole single throw switch to connect said at least one system solar panel or disconnect said at least one system solar panel from all other circuits and components.

19. The solar powered water pump and an illumination system of claim 4, wherein said substitutive component for said zener diode of said battery discharge control circuit, further including a light emitting diode.

20. The solar powered water pump and an illumination system of claim 4, wherein said substitutive component for said zener diode of said battery discharge control circuit further including a resistor.

21. The solar powered water pump and an illumination system of claim 4, wherein said functionally interchangeable device of said battery discharge control circuit further including a normally open I/O, input/output, module.

22. The solar powered DC load water pump and an illumination system of claim 4, wherein said functionally interchangeable device of said battery discharge control circuit further including a normally open relay.

23. The solar powered water pump and an illumination system of claim 4, wherein said functionally interchangeable device of said battery discharge control circuit further including an opto-isolator or an opto-coupler respectively.

24. The solar powered water pump and an illumination system of claim 4, wherein said normally open device for replacing said normally open solid state relay further including a normally open I/O, input/output, module.

25. The solar powered water pump and an illumination system of claim 4, wherein said normally open device for replacing said normally open solid state relay further including a normally open relay.

26. The solar powered water pump and an illumination system of claim 4 wherein said normally open device for replacing said normally open solid state relay further including an opto-coupler or an opto-isolator respectively.

27. The solar powered water pump and an illumination system of claim 4, wherein said predetermined voltage further determined by one of following functionally interchangeable components:

a zener diode, a light emitting diode or a resistor connected in series directly or indirectly to said input of said normally open solid state relay or said input of said normally open device for adjusting the predetermined voltage up to the voltage of said system solar panel if the input voltage of said normally open solid state relay or the input voltage of said normally open device is less than the voltage of said system solar panel.

28. The solar powered water pump and an illumination system of claim 4 wherein said at least one solar panel of said control circuit for night time DC load further including at least one system solar panel or a standalone solar panel connected in parallel to said input of said normally open solid state relay or said input of said normally open device for synchronizing the day and night cycles for day time DC load.

6. The solar powered water pump and an illumination system has the capability to create a combination system which selected circuit(s) or component(s) basically from the rechargeable battery protection circuits and synchronized the day and night cycles for night time DC load system to create an illuminating system, a water pumping system or the illuminating system combines with the water pumping system, the night time DC load turned off in the morning and turned on at evening automatically, the combination system comprising:

(a) a battery discharge control circuit comprising a preset voltage that is determined by components of a zener diode and an input of a normally open solid state relay, a nominal voltage that is nominated by at least one rechargeable battery source;

wherein said components of said preset voltage are connected to each other in series then directly, or through at least one diode in series, coupled to at least one rechargeable battery source in parallel, wherein said preset voltage is substantially equal to or greater than the nominal voltage of the rechargeable battery source;

wherein said zener diode has the capability to be replaced by a substitutive component;

wherein said preset voltage means that when the input voltage drops out of the low end control range of the input of the normally open solid state relay and reaches the preset voltage level, an output of the normally open solid state relay opens up and disconnects at least one type of direct current load to access the rechargeable battery source, the preset voltage is the lowest level that the rechargeable battery source is discharged;

wherein said rechargeable battery source includes at least one rechargeable battery or at least one rechargeable battery pack;

(b) a control circuit for night time DC load comprising a predetermined voltage that is determined by at least input of a normally closed solid state relay, which is connected in series to a diode then coupled to, or directly coupled to at least one solar panel in parallel which is synchronizing the day and night cycles for the night time DC load;

(c) combined a battery output circuit for DC load to an output circuit for night time DC load, comprising at least one rechargeable battery source of said battery discharge control circuit that is connected in parallel to, or through a first diode to, an output of said normally open solid state relay of said battery discharge control circuit, an output of said normally closed solid state relay of said control circuit for night time DC load is connected in series directly or through a second diode to a negative pole/terminal of said output of said normally open solid state relay, at least one type of DC load connected directly or indirectly to a negative pole/terminal of said output of said normally closed solid state relay;

the swapped connection between said output of said normally closed solid state relay and said output of said normally open solid state relay operates with equal efficacy in the combined battery output circuit for DC load to the output circuit for night time DC load;

(d) a charging battery circuit comprising the at least one system solar panel that charges the at least one rechargeable battery source through an anti-reverse power diode;

wherein said input of said normally open solid state relay has the capability to be replaced by an input of a functionally interchangeable device, where each of said normally open solid state relay or said functionally interchangeable device has the input of positive and negative control poles/terminals, and the output of positive and negative poles/terminals, wherein said output of said normally open solid state relay has the capability to be replaced by said output of said functionally interchangeable device;

wherein said input of said normally closed solid state relay has the capability to be replaced by an input of a normally closed device, where each of said normally closed solid state relay or said normally closed device has the input of positive and negative control poles/terminals, and the output of positive and negative poles/terminals, wherein said output of said normally closed solid state relay has the capability to be replaced by said output of said normally closed device.

7. The solar powered water pump and an illumination system of claim 6, wherein said synchronizing the day and night cycles for night time DC load means that when at least one solar pane connected in parallel to the input of the normally closed solid state relay or the input of the normally closed device directly or through the diode, the input of the normally closed solid state relay or the input of the normally closed device prevents the system solar panel and the rechargeable battery source to access the at least one type of DC load that includes a type of at least one light emitting diode for illumination, a type of motor operation having at least a water pump, or both types of said at least one light emitting diode and said motor operation having at least a water pump in the early morning through the day, but connected the rechargeable battery source to the at least one type of DC load at evening through the night, therefore the output of the normally closed solid state relay or the normally closed device is opened in the early morning through the day, the at least one type of DC load cannot receive power, the output of the normally closed solid state relay or the output of the normally closed device is closed at evening through the night, the at least one type of DC load received power for illuminating and/or operation.

29. The solar powered DC load water pump and an illumination system of claim 6, wherein said substitutive component for said zener diode of said battery discharge control circuit further including a light emitting diode.

30. The solar powered water pump and an illumination system of claim 6, wherein said substitutive component for said zener diode of said battery discharge control circuit, further including a resistor.

31. The solar powered water pump and an illumination system of claim 6, wherein said functionally interchangeable device for said normally open solid state relay further including a normally open I/O, input/output, module.

32. The solar powered water pump and an illumination system of claim 6, wherein said functionally interchangeable device for said normally open solid state relay further including a normally open relay.

33. The solar powered water pump and an illumination system of claim 6, wherein said functionally interchangeable device for said normally open solid state relay further including an opto-coupler or opto-isolator respectively.

34. The solar powered water pump and an illumination system of claim 6, wherein said normally closed device for replacing said normally closed solid state relay further including a normally closed I/O, input/output, module.

35. The solar powered water pump and an illumination system of claim 6, wherein said normally closed device for replacing said normally closed solid state relay further including a normally closed relay.

36. The solar powered water pump and an illumination system of claim 6 wherein said normally closed device for replacing said normally closed solid state relay further including an opto-coupler or an opto-isolator respectively.

37. The solar powered water pump and an illumination system of claim 6, wherein said predetermined voltage further determined by one of following functionally interchangeable components:

a zener diode, a light emitting diode, or a resistor connected in series to said input of said normally closed solid state relay or said input of said normally closed device for adjusting said predetermined voltage up to the voltage of the system solar panel if the input voltage of said normally closed solid state relay or the input voltage of said normally closed device is less than the voltage of said system solar panel.

38. The solar powered water pump and an illumination system of claim 6 wherein said at least one solar panel of said control circuit for night time DC load further including at least one system solar panel or a standalone solar panel connected in parallel to said input of said normally closed solid state relay or said input of said normally closed device for synchronizing the day and night cycles for the night time DC load.