IP Library Granted Patent US 10,340,702
Granted Patent B2
US 10,340,702 · App. 15/235,051 · Granted Jul 2, 2019

Optimizer battery PV energy generation systems

Inventor: Sandeep Narla (San Jose, CA)
Assignee: SolarCity Corporation
H02J3/385H02J3/383H02J3/46H02J5/00H02J7/35H02S40/32H02S40/38Y02B10/14Y02E10/563Y02E10/566
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Quick Facts
Patent No.
US 10,340,702
App. No.
15/235,051
Granted
Jul 2, 2019
Kind
B2
Abstract

Embodiments disclose an energy generation system including a photovoltaic (PV) array having a plurality of PV modules for generating direct current (DC) power, a plurality of Opti-battery packs coupled to the PV array, where each Opti-battery pack is coupled to a respective PV module and configured to receive DC power from the respective PV module, and an inverter configured to receive DC power from the plurality of Opti-battery packs and to convert the DC power to alternating current (AC) power.

Claims (28)

1. An energy generation system, comprising:

a photovoltaic (PV) array comprising a plurality of PV modules for generating direct current (DC) power, wherein each PV module is a PV panel;

a plurality of Opti-battery packs coupled to the PV array, wherein each Opti-battery pack is coupled to a respective PV module and configured to receive DC power from the respective PV module, and wherein each Opti-battery pack is coupled to a different PV module; and

an inverter configured to receive DC power from the plurality of Opti-battery packs and to convert the DC power to alternating current (AC) power.

2. The energy generation system of claim 1 , wherein each Opti-battery pack is positioned proximate to the respective PV module.

3. The energy generation system of claim 2 , wherein each Opti-battery pack is positioned underneath the respective PV module.

4. The energy generation system of claim 1 , wherein each Opti-battery pack includes a DC-to-DC converter configured to perform maximum power-point tracking (MPPT) on DC power from the respective PV module.

5. The energy generation system of claim 4 , wherein the DC-to-DC converter is a bidirectional DC-to-DC converter configured to convert DC power from battery cells in the Opti-battery pack and DC power from the respective PV module.

6. The energy generation system of claim 1 , wherein the plurality of Opti-battery packs are serially connected.

7. The energy generation system of claim 1 , wherein the plurality of PV modules and the plurality of Opti-battery packs are equal in number.

8. The energy generation system of claim 1 , wherein the plurality of Opti-battery packs are coupled to less than all PV modules of the plurality of PV modules.

9. The energy generation system of claim 1 , wherein some PV modules of the plurality of PV modules are coupled to respective PV optimizers.

10. An energy generation system, comprising:

a photovoltaic (PV) array comprising a plurality of PV modules for generating direct current (DC) power, wherein each PV module is a PV panel;

a plurality of Opti-battery packs coupled to the PV array, wherein each Opti-battery pack is coupled to a respective PV module and comprises a DC-to-DC converter for performing maximum power-point tracking (MPPT) of power outputted by the respective PV module, and wherein each Opti-battery pack is coupled to a different PV module; and

an inverter configured to receive DC power from the plurality of Opti-battery packs and to convert the DC power to alternating current (AC) power.

11. The energy generation system of claim 10 , wherein the DC-to-DC converter is also configured to convert the DC power provided by the respective PV module.

12. The energy generation system of claim 10 , wherein the Opti-battery pack further comprises battery cells and a battery management system (BMS).

13. The energy generation system of claim 12 , wherein the DC-to-DC converter, the battery cells, and the BMS are contained within a single enclosure.

14. The energy generation system of claim 12 , wherein the battery cells and the BMS are contained within a separate enclosure from the DC-to-DC converter.

15. An energy generation system, comprising:

a photovoltaic (PV) array comprising a plurality of PV modules for generating direct current (DC) power, wherein each PV module is a PV panel;

a plurality of Optimizers coupled to the PV array, wherein each Optimizer is coupled to a respective PV module and comprises a DC-to-DC converter for performing maximum power-point tracking (MPPT) of power outputted by the respective PV module, and wherein each Optimizer is coupled to a different PV module;

a plurality of Opti-battery packs coupled to the plurality of Optimizers, wherein each Opti-battery pack is coupled to a respective Optimizer for storing power provided by the respective PV module, and wherein each Opti-battery pack is coupled to a different Optimizer; and

an inverter configured to receive DC power from the plurality of Optimizers and to convert the DC power to alternating current (AC) power.

16. The method of claim 15 , wherein the DC-to-DC converter is also configured to convert the DC power provided by a respective Opti-battery pack.

17. The method of claim 15 , wherein the Opti-battery pack further comprises battery cells and a battery management system (BMS).

18. The method of claim 15 , wherein the Optimizer comprises a connector for interfacing with the respective Opti-battery pack.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 6, 2021
From: SOLARCITY CORPORATION
To: TESLA, INC.
Reel/Frame 056172/0062 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2016
From: NARLA, SANDEEP
To: SOLARCITY CORPORATION
Reel/Frame 039412/0573 →
Continuity (1)
Related Publication 20180048160A1 · Feb 15, 2018