An energy storage power supply system

Abstract

The utility model discloses a kind of energy storage power supply systems.The system includes: the received alternating current is converted into first direct current by first power conversion module, and power supply for energy storage control module;Uninterruptible power supply module detects the power supply voltage of power grid in real time, and when power grid power supply is abnormal, power supply to first power conversion module;First power conversion module detects the power supply voltage of uninterruptible power supply module in real time, and the power supply voltage of uninterruptible power supply module is converted into first voltage signal transmission to energy storage control module;Energy storage control module receives first voltage signal, and first closing signal is output to first power conversion module, and first opening signal is output to second power conversion module simultaneously;Second power conversion module is used for receiving first opening signal, and the direct current output by energy storage battery pack is converted into first direct current, and power supply for energy storage control module.The utility model makes that when power grid and uninterruptible power supply module simultaneously power supply is abnormal, energy storage control module can also work normally.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage technology field especially relates to energy storage power supply system. BACKGROUND

[0002] In prior art, energy storage system control unit, such as energy management system, battery management system and charge-discharge control box, is generally powered by double circuit of power grid and UPS emergency power supply.

[0003] If power grid outage and UPS are simultaneously out of power, at this time, energy storage system control unit is in no power state, that is, energy management system and battery management system cannot be powered, and at the same time, charge-discharge control box main circuit relay is closed, causing energy storage system main power supply circuit to be in disconnected state, thereby causing energy storage system to be unable to work normally. SUMMARY

[0004] The utility model provides a kind of energy storage power supply system, so that when power grid and uninterruptible power supply module are simultaneously powered abnormally, energy storage control module can also work normally.

[0005] According to an aspect of the utility model, an energy storage power supply system is provided, which comprises:

[0006] energy storage control module, energy storage battery pack, uninterruptible power supply module, first power conversion module and second power conversion module;

[0007] The output end of the power grid is connected to the first end of the first power conversion module, the second end of the first power conversion module is connected to the first end of the energy storage control module, and the first power conversion module is used to convert the received alternating current into first direct current and supply power to the energy storage control module;

[0008] The output end of the power grid is connected to the first end of the uninterruptible power supply module, the second end of the uninterruptible power supply module is connected to the first end of the first power conversion module, and the uninterruptible power supply module is used to detect the power supply voltage of the power grid in real time and supply power to the first power conversion module when the power supply of the power grid is abnormal;

[0009] The first end of the energy storage battery pack is connected to the first end of the second power conversion module, the second end of the second power conversion module is connected to the second end of the energy storage control module, and the first power conversion module is further used to detect the power supply voltage of the uninterruptible power supply module in real time and convert the power supply voltage of the uninterruptible power supply module into a first voltage signal and transmit it to the energy storage control module;The energy storage control module is used to receive the first voltage signal and output a first closing signal to the first power conversion module and a first opening signal to the second power conversion module;

[0010] The first power conversion module is configured to receive the first closing signal and stop working; and the second power conversion module is configured to receive the first opening signal and convert the direct current output by the energy storage battery pack into the first direct current to power the energy storage control module.

[0011] Further, the energy storage control module comprises an energy storage control unit and a power supply unit.

[0012] The first end of the energy storage control unit is connected with the second end of the first power conversion module, the second end of the energy storage control unit is connected with the second end of the second power conversion module, and the third end of the energy storage control unit is connected with the power supply unit.

[0013] The energy storage control unit is configured to receive the first voltage signal and output the first closing signal to the first power conversion module and output the first opening signal to the second power conversion module.

[0014] The second power conversion module is configured to detect the power supply voltage of the energy storage battery pack in real time and convert the power supply voltage of the energy storage battery pack into an energy storage voltage signal and transmit the energy storage voltage signal to the energy storage control unit.

[0015] The energy storage control unit is configured to receive the energy storage voltage signal and output an energy storage closing signal to the second power conversion module and output a power supply unit opening signal to the power supply unit.

[0016] The power supply unit is configured to receive the power supply unit opening signal and power the energy storage control unit.

[0017] Further, the energy storage control module comprises a charge-discharge control unit, an energy management unit and a battery management unit.

[0018] The second end of the first power conversion module is connected with the first end of the charge-discharge control unit, the first end of the energy management unit and the first end of the battery management unit, and the first power conversion module is configured to convert the received alternating current into the first direct current to power the charge-discharge control unit, the energy management unit and the battery management unit.

[0019] The second end of the second power conversion module is connected with the second end of the charge-discharge control unit, the second end of the energy management unit and the second end of the battery management unit, the first power conversion module is configured to detect the power supply voltage of the uninterruptible power supply module in real time and convert the power supply voltage of the uninterruptible power supply module into the first voltage signal and transmit the first voltage signal to the energy management unit; the energy management unit is configured to receive the first voltage signal and output the first closing signal to the first power conversion module and output the first opening signal to the second power conversion module; and the second power conversion module is configured to receive the first opening signal and convert the direct current output by the energy storage battery pack into the first direct current to power the charge-discharge control unit, the energy management unit and the battery management unit.

[0020] Further, the energy management unit comprises a third power converter, a controller, a first electric core and an energy management subunit;

[0021] The first end of the energy management subunit is connected with the second end of the first power conversion module, the second end of the energy management subunit is connected with the second end of the second power conversion module, the third end of the energy management subunit is connected with the first end of the third power converter, and the second end of the third power converter is connected with the first electric core;

[0022] The first end of the controller is connected with the second power conversion module, and the second power conversion module is used for detecting the power supply voltage of the energy storage battery pack in real time and converting the power supply voltage of the energy storage battery pack into a second voltage signal and transmitting the second voltage signal to the controller;

[0023] The second end of the controller is connected with the third end of the third power converter, and the controller is used for receiving the second voltage signal and outputting a second closing signal to the second power conversion module and outputting a second opening signal to the third power converter;

[0024] The third power converter is used for receiving the second opening signal and converting the direct current output by the first electric core into a first direct current to supply power to the energy management subunit;

[0025] The third end of the controller is connected with the first power conversion module, the first power conversion module is used for detecting the power supply voltage of the uninterruptible power supply module in real time and converting the power supply voltage of the uninterruptible power supply module into a first voltage signal and transmitting the first voltage signal to the controller, and the controller is used for receiving the first voltage signal and outputting a first closing signal to the first power conversion module and outputting a first opening signal to the second power conversion module.

[0026] Further, the charge and discharge control unit comprises a fourth power converter, a second electric core and a charge and discharge control subunit;

[0027] The first end of the charge and discharge control subunit is connected with the second end of the first power conversion module and the second end of the second power conversion module, the second end of the charge and discharge control subunit is connected with the first end of the fourth power converter, and the second end of the fourth power converter is connected with the second electric core;

[0028] The second power conversion module is used for detecting the power supply voltage of the energy storage battery pack in real time and converting the power supply voltage of the energy storage battery pack into a second voltage signal and transmitting the second voltage signal to the energy management unit;

[0029] The energy management unit is used for receiving the second voltage signal and outputting a second closing signal to the second power conversion module and outputting a third opening signal to the fourth power converter;

[0030] The fourth power converter is configured to receive the third opening signal and convert direct current output by the third electric core into the first direct current to supply power to the charge-discharge control subunit.

[0031] Further, the battery management unit comprises a fifth power converter, a third electric core and a battery management subunit.

[0032] The first end of the battery management subunit is connected with the second end of the first power conversion module, the second end of the battery management subunit is connected with the second end of the second power conversion module, the third end of the battery management subunit is connected with the first end of the fifth power converter, and the second end of the fifth power converter is connected with the third electric core.

[0033] The second power conversion module is configured to detect the power supply voltage of the energy storage battery pack in real time and convert the power supply voltage of the energy storage battery pack into a second voltage signal and transmit the second voltage signal to the energy management unit.

[0034] The energy management unit is configured to receive the second voltage signal, output a second closing signal to the second power conversion module, and output a fourth opening signal to the fifth power converter.

[0035] The fifth power converter is configured to receive the fourth opening signal and convert direct current output by the third electric core into the first direct current to supply power to the battery management subunit.

[0036] Further, the first power conversion module comprises a first power converter and a first detection unit.

[0037] The output end of the power grid is connected with the first end of the first power converter, the second end of the first power converter is connected with the first end of the energy storage control module, and the first power converter is configured to convert the received alternating current into the first direct current and supply power to the energy storage control module.

[0038] The first detection unit is connected with the energy storage control module, and the first detection unit is configured to detect the power supply voltage of the uninterruptible power supply module in real time and convert the power supply voltage of the uninterruptible power supply module into a first voltage signal and transmit the first voltage signal to the energy storage control module.

[0039] Further, the second power conversion module comprises a second power converter and a second detection unit.

[0040] The first end of the energy storage battery pack is connected with the first end of the second power converter, the second end of the second power converter is connected with the second end of the energy storage control unit, and the second power converter is configured to receive the first opening signal, convert direct current output by the energy storage battery pack into the first direct current, and supply power to the energy storage control unit.

[0041] The second detection unit is connected with the energy storage control unit, and is configured to detect the power supply voltage of the energy storage battery pack in real time and convert the power supply voltage of the energy storage battery pack into an energy storage voltage signal and transmit the energy storage voltage signal to the energy storage control unit.

[0042] Further, the uninterruptible power supply module comprises an uninterruptible power supply unit and a third detection unit.

[0043] The output end of the power grid is connected with the first end of the uninterruptible power supply unit, the second end of the uninterruptible power supply unit is connected with the first end of the first power conversion module, and the third end of the uninterruptible power supply unit is connected with the third detection unit.

[0044] The third detection unit is configured to detect the power supply voltage of the power grid in real time and send an uninterruptible power supply opening signal to the uninterruptible power supply unit when the power supply of the power grid is abnormal, and the uninterruptible power supply unit is configured to receive the uninterruptible power supply opening signal and supply power to the first power conversion module.

[0045] Further, the energy storage power supply system further comprises:

[0046] An energy storage converter.

[0047] The first end of the energy storage converter is connected with the output end of the power grid, the second end of the energy storage converter is connected with the second end of the charge-discharge control unit, and the third end of the charge-discharge control unit is connected with the energy storage battery pack.

[0048] The energy storage power supply system provided by the embodiment of the utility model, comprising: energy storage control module, energy storage battery pack, uninterruptible power supply module, first power conversion module and second power conversion module, the output end of the power grid is connected with the first end of the first power conversion module, the second end of the first power conversion module is connected with the first end of the energy storage control module, the output end of the power grid is connected with the first end of the uninterruptible power supply module, the second end of the uninterruptible power supply module is connected with the first end of the first power conversion module, the first end of the energy storage battery pack is connected with the first end of the second power conversion module, the second end of the second power conversion module is connected with the second end of the energy storage control module, the power supply voltage of the uninterruptible power supply module is detected in real time through the first power conversion module, and the power supply voltage of the uninterruptible power supply module is converted into a first voltage signal and transmitted to the energy storage control module, the energy storage control module receives the first voltage signal, outputs a first closing signal to the first power conversion module to make the first power conversion module stop working, and outputs a first opening signal to the second power conversion module to make the second power conversion module convert the direct current output by the energy storage battery pack into a first direct current to supply power to the energy storage control module, so that the energy storage control module can also work normally when the power supply of the power grid and the uninterruptible power supply module is abnormal.

[0049] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0051] Figure 1 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0052] Figure 2 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0053] Figure 3 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0054] Figure 4 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0055] Figure 5 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0056] Figure 6 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0057] Figure 7 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0058] Figure 8 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0059] Figure 9 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application;

[0060] Figure 10 is a structural schematic diagram of another energy storage power supply system according to an embodiment of the present application. DETAILED DESCRIPTION

[0061] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0062] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0063] The embodiment of the present application provides a kind of energy storage power supply system, Figure 1 It is the structural diagram of a kind of energy storage power supply system provided by the embodiment of the present application, reference Figure 1 , energy storage power supply system includes:

[0064] Energy storage control module 1, energy storage battery pack 2, uninterrupted power supply module 3, first power conversion module 4 and second power conversion module 5;

[0065] The output end of power grid 6 is connected with the first end of first power conversion module 4, the second end of first power conversion module 4 is connected with the first end of energy storage control module 1, and first power conversion module 4 is used to convert received alternating current into first direct current and power supply for energy storage control module 1;

[0066] The output end of power grid 6 is connected with the first end of uninterrupted power supply module 3, the second end of uninterrupted power supply module 3 is connected with the first end of first power conversion module 4, and uninterrupted power supply module 3 is used to detect the power supply voltage of power grid 6 in real time, and when power supply of power grid 6 is abnormal, power supply is supplied to first power conversion module 4;

[0067] The first end of the energy storage battery pack 2 is connected with the first end of the second power conversion module 5, the second end of the second power conversion module 5 is connected with the second end of the energy storage control module 1, the first power conversion module 4 is further used for detecting the power supply voltage of the uninterrupted power supply module 3 in real time, and the power supply voltage of the uninterrupted power supply module 3 is converted into a first voltage signal and transmitted to the energy storage control module 1; the energy storage control module 1 is used for receiving the first voltage signal, and outputting a first closing signal to the first power conversion module 4 and outputting a first opening signal to the second power conversion module 5 at the same time;

[0068] The first power conversion module 4 is used for receiving the first closing signal and stopping working; the second power conversion module 5 is used for receiving the first opening signal and converting the direct current output by the energy storage battery pack 2 into a first direct current to supply power to the energy storage control module 1.

[0069] Specifically, generally, the energy storage control module 1 is supplied with power by the power grid 6 to make the energy storage power supply module 1 work normally, that is, the alternating current output by the power grid 6 is converted into a first direct current by the first power conversion module 4 to supply power to the energy storage control module 1, and the voltage range of the first direct current is 12V-36V for example. The uninterrupted power supply module 3 is arranged between the power grid 6 and the first power conversion module 4, the power supply voltage of the power grid 6 is detected in real time, and when the power supply of the power grid 6 is abnormal, the uninterrupted power supply module 3 is opened to supply power to the first power conversion module 4 to convert the received alternating current into the first direct current to continue to supply power to the energy storage control module 1 through the first power conversion module 4.

[0070] And the first power conversion module 4 further detects the power supply voltage of the uninterrupted power supply module 3 in real time, and converts the detected power supply voltage of the uninterrupted power supply module 3 into a first voltage signal and transmits it to the energy storage control module 1, the energy storage control module 1 sends a first closing signal to the first power conversion module 4 when the power supply of the power grid 6 and the uninterrupted power supply module 3 is abnormal at the same time, to control the first power conversion module 4 to stop working; and at the same time, a first opening signal is output to the second power conversion module 5 to control the second power conversion module 5 to convert the direct current output by the energy storage battery pack 2 into a first direct current to supply power to the energy storage control module 1, so that the energy storage control module 1 can also work normally when the power supply of the power grid 6 and the uninterrupted power supply module 3 is abnormal at the same time.

[0071] The energy storage power supply system provided by the embodiment of the utility model, including: energy storage control module 1, energy storage battery group 2, uninterrupted power supply module 3, first power conversion module 4 and second power conversion module 5, the output of power grid 6 is connected with the first end of first power conversion module 4, the second end of first power conversion module 4 is connected with the first end of energy storage control module 1, the output of power grid 6 is connected with the first end of uninterrupted power supply module 3, the second end of uninterrupted power supply module 3 is connected with the first end of first power conversion module 4, the first end of energy storage battery group 2 is connected with the first end of second power conversion module 5, the second end of second power conversion module 5 is connected with the second end of energy storage control module 1, the power voltage of uninterrupted power supply module 3 is detected in real time through first power conversion module 4, and the power voltage of uninterrupted power supply module 3 is converted into first voltage signal and is transmitted to energy storage control module 1, energy storage control module 1 receives first voltage signal, and outputs first closing signal to first power conversion module 4, so that first power conversion module 4 stops working, and simultaneously outputs first opening signal to second power conversion module 5, so that second power conversion module 5 converts the direct current output by energy storage battery group 2 into first direct current, and supplies power for energy storage control module 1, so that energy storage control module 1 can also work normally when power grid 6 and uninterrupted power supply module 3 supply power abnormally at the same time.

[0072] Further, Figure 2 It is another structure diagram of energy storage power supply system provided by the embodiment of the utility model, referring to Figure 2 Energy storage control module 1 includes: energy storage control unit 11 and power supply unit 12.

[0073] The first end of energy storage control unit 11 is connected with the second end of first power conversion module 4, the second end of energy storage control unit 11 is connected with the second end of second power conversion module 5, and the third end of energy storage control unit 11 is connected with power supply unit 12.

[0074] Energy storage control unit 11 is used for receiving first voltage signal, and outputs first closing signal to first power conversion module 4 and simultaneously outputs first opening signal to second power conversion module 5.

[0075] Second power conversion module 5 is used for detecting the power voltage of energy storage battery group 2 in real time, and converts the power voltage of energy storage battery group 2 into energy storage voltage signal and transmits to energy storage control unit 11.

[0076] Energy storage control unit 11 is used for receiving energy storage voltage signal, and outputs energy storage closing signal to second power conversion module 5 and simultaneously outputs power supply unit opening signal to power supply unit 12.

[0077] Power supply unit 12 is used for receiving power supply unit opening signal and supplying power for energy storage control unit 11.

[0078] Specifically, the second power conversion module 5 detects the power supply voltage of the energy storage battery pack 2 in real time, and converts the power supply voltage of the energy storage battery pack 2 into an energy storage voltage signal and transmits the energy storage voltage signal to the energy storage control unit 11. When the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 supply power abnormally at the same time, the energy storage control unit 11 outputs an energy storage closing signal to the second power conversion module 5 to control the second power conversion module 5 to stop working, and outputs a power supply unit opening signal to the power supply unit 12 to control the power supply unit 12 to supply power to the energy storage control unit 11, so that the energy storage control module 1 can also work normally when the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 supply power abnormally at the same time.

[0079] Further, Figure 3 is another structure schematic view of the energy storage power supply system according to the embodiment of the utility model, referring to Figure 3 The energy storage control module comprises: a charge-discharge control unit 13, an energy management unit 14 and a battery management unit 15.

[0080] The second end of the first power conversion module 4 is connected with the first end of the charge-discharge control unit 13, the first end of the energy management unit 14 and the first end of the battery management unit 15, and the first power conversion module 4 is used to convert the received alternating current into first direct current to supply power to the charge-discharge control unit 13, the energy management unit 14 and the battery management unit 15.

[0081] The second end of the second power conversion module 5 is connected with the second end of the charge-discharge control unit 13, the second end of the energy management unit 14 and the second end of the battery management unit 15, and the first power conversion module 4 is used to detect the power supply voltage of the uninterruptible power supply module 3 in real time and convert the power supply voltage of the uninterruptible power supply module 3 into a first voltage signal and transmit the first voltage signal to the energy management unit 14; the energy management unit 14 is used to receive the first voltage signal and output a first closing signal to the first power conversion module 4 and output a first opening signal to the second power conversion module 5; the second power conversion module 5 is used to receive the first opening signal and convert the direct current output by the energy storage battery pack 2 into first direct current to supply power to the charge-discharge control unit 13, the energy management unit 14 and the battery management unit 15.

[0082] Specifically, the alternating current output by the power grid 6 is converted into the first direct current by the first power conversion module 4 to supply power to the charge-discharge control unit 13, the energy management unit 14 and the battery management unit 15, so that the charge-discharge control unit 13, the energy management unit 14 and the battery management unit 15 can work normally. The uninterrupted power supply module 3 is arranged between the power grid 6 and the first power conversion module 4, so that the supply voltage of the power grid 6 can be detected in real time, and when the power supply of the power grid 6 is abnormal, the uninterrupted power supply module 3 is started to supply power to the first power conversion module 4, so that the received alternating current is converted into the first direct current by the first power conversion module 4 to continue to supply power to the charge-discharge control unit 13, the energy management unit 14 and the battery management unit 15.

[0083] The first power conversion module 4 detects the supply voltage of the uninterrupted power supply module 3 in real time, and converts the detected supply voltage of the uninterrupted power supply module 3 into a first voltage signal and transmits the first voltage signal to the energy management unit 14. When the power supply of the power grid 6 and the uninterrupted power supply module 3 is abnormal at the same time, the energy management unit 14 sends a first closing signal to the first power conversion module 4 to control the first power conversion module 4 to stop working, and simultaneously outputs a first opening signal to the second power conversion module 5 to control the second power conversion module 5 to convert the direct current output by the energy storage battery pack 2 into the first direct current to supply power to the charge-discharge control unit 13, the energy management unit 14 and the battery management unit 15, so that the charge-discharge control unit 13, the energy management unit 14 and the battery management unit 15 can also work normally when the power supply of the power grid 6 and the uninterrupted power supply module 3 is abnormal at the same time. For example, a diode can be arranged between the second end of the first power conversion module 4 and the first end of the charge-discharge control unit 13, a diode can be arranged between the second end of the first power conversion module 4 and the first end of the energy management unit 14, and a diode can be arranged between the second end of the first power conversion module 4 and the first end of the battery management unit 15; and a diode can be arranged between the second end of the second power conversion module 5 and the second end of the charge-discharge control unit 13, a diode can be arranged between the second end of the second power conversion module 5 and the second end of the energy management unit 14, and a diode can be arranged between the second end of the second power conversion module 5 and the second end of the battery management unit 15, so as to prevent the reverse flow phenomenon of the power supply circuit and avoid the loop current burning failure of the first power conversion module 4 and the second power conversion module 5.

[0084] Further, Figure 4 is another structure diagram of an energy storage power supply system according to the embodiment of the present application, referring to Figure 4 The energy management unit 14 comprises a third power converter 141, a controller 142, a first battery cell 143 and an energy management subunit 144.

[0085] The first end of the energy management subunit 144 is connected with the second end of the first power conversion module 4, the second end of the energy management subunit 144 is connected with the second end of the second power conversion module 5, the third end of the energy management subunit 144 is connected with the first end of the third power converter 141, and the second end of the third power converter 141 is connected with the first electric core 143; the first electric core 143 is connected with the power supply end of the controller 142, and the first electric core 143 is used for supplying power for the controller 142;

[0086] The first end of the controller 142 is connected with the second power conversion module 5, and the second power conversion module 5 is used for detecting the power supply voltage of the energy storage battery group 2 in real time and converting the power supply voltage of the energy storage battery group 2 into a second voltage signal and transmitting the second voltage signal to the controller 142;

[0087] The second end of the controller 142 is connected with the third end of the third power converter 141, and the controller 142 is used for receiving the second voltage signal and outputting a second closing signal to the second power conversion module 5 and outputting a second opening signal to the third power converter 141;

[0088] The third power converter 141 is used for receiving the second opening signal and converting the direct current output by the first electric core 143 into first direct current to supply power for the energy management subunit 144;

[0089] The third end of the controller 142 is connected with the first power conversion module 4, and the first power conversion module 4 is used for detecting the power supply voltage of the uninterruptible power supply module 3 in real time and converting the power supply voltage of the uninterruptible power supply module 3 into a first voltage signal and transmitting the first voltage signal to the controller 142; the controller 142 is used for receiving the first voltage signal and outputting a first closing signal to the first power conversion module 4 and outputting a first opening signal to the second power conversion module 5.

[0090] Specifically, the first power conversion module 4 detects the power supply voltage of the uninterruptible power supply module 3 in real time, converts the detected power supply voltage of the uninterruptible power supply module 3 into a first voltage signal and transmits the first voltage signal to the controller 142, the controller 142 sends a first closing signal to the first power conversion module 4 to control the first power conversion module 4 to stop working when the power grid 6 and the uninterruptible power supply module 3 supply power abnormally at the same time, and simultaneously outputs a first opening signal to the second power conversion module 5 to control the second power conversion module 5 to convert the direct current output by the energy storage battery group 2 into first direct current to supply power for the energy management subunit 144, so that the energy management subunit 144 can also work normally when the power grid 6 and the uninterruptible power supply module 3 supply power abnormally at the same time.

[0091] The second power conversion module 5 detects the power supply voltage of the energy storage battery pack 2 in real time, and converts the power supply voltage of the energy storage battery pack 2 into a second voltage signal and transmits the second voltage signal to the controller 142. The controller 142 outputs a second closing signal to the second power conversion module 5 to control the second power conversion module 5 to stop working when the power supply of the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 is abnormal at the same time, and outputs a second opening signal to the third power converter 141 to control the third power converter 141 to convert the direct current output by the first electric core 143 into the first direct current to supply power to the energy management subunit 144, so that the energy management subunit 144 can also work normally when the power supply of the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 is abnormal at the same time.

[0092] Further, Figure 5 It is another structure schematic view of an energy storage power supply system provided by the embodiment of the utility model, referring to Figure 5 The charge and discharge control unit 13 comprises a fourth power converter 131, a second electric core 132 and a charge and discharge control subunit 133.

[0093] The first end of the charge and discharge control subunit 133 is connected with the second end of the first power conversion module 4 and the second end of the second power conversion module 5, the second end of the charge and discharge control subunit 133 is connected with the first end of the fourth power converter 131, and the second end of the fourth power converter 131 is connected with the second electric core 132.

[0094] The second power conversion module 5 is used for detecting the power supply voltage of the energy storage battery pack 2 in real time, and converting the power supply voltage of the energy storage battery pack 2 into a second voltage signal and transmitting the second voltage signal to the energy management unit 14.

[0095] The energy management unit 14 is used for receiving the second voltage signal, and outputting a second closing signal to the second power conversion module 5 and outputting a third opening signal to the fourth power converter 131.

[0096] The fourth power converter 131 is used for receiving the third opening signal, and converting the direct current output by the second electric core 132 into the first direct current to supply power to the charge and discharge control subunit 133.

[0097] Specifically, the second power conversion module 5 detects the power supply voltage of the energy storage battery pack 2 in real time, and converts the power supply voltage of the energy storage battery pack 2 into a second voltage signal and transmits the second voltage signal to the energy management unit 14. When the power supply of the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 is abnormal at the same time, the energy management unit 14 outputs a second closing signal to the second power conversion module 5 to control the second power conversion module 5 to stop working, and outputs a third opening signal to the fourth power converter 131 to control the fourth power converter 131 to convert the direct current output by the second electric core 132 into the first direct current to supply power to the charge and discharge control subunit 133, so that the charge and discharge control subunit 133 can also work normally when the power supply of the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 is abnormal at the same time.

[0098] Further, Figure 6 is another structural schematic diagram of an energy storage power supply system according to an embodiment of the present application, referring to Figure 6 The battery management unit 15 comprises a fifth power converter 151, a third electric core 152 and a battery management subunit 153.

[0099] The first end of the battery management subunit 153 is connected with the second end of the first power conversion module 4, the second end of the battery management subunit 153 is connected with the second end of the second power conversion module 5, the third end of the battery management subunit 153 is connected with the first end of the fifth power converter 151, and the second end of the fifth power converter 151 is connected with the third electric core 152.

[0100] The second power conversion module 5 is used for detecting the power supply voltage of the energy storage battery pack 2 in real time, and converting the power supply voltage of the energy storage battery pack 2 into a second voltage signal and transmitting the second voltage signal to the energy management unit 14.

[0101] The energy management unit 14 is used for receiving the second voltage signal, and outputting a second closing signal to the second power conversion module 5 and outputting a fourth opening signal to the fifth power converter 151.

[0102] The fifth power converter 151 is used for receiving the fourth opening signal, and converting the direct current output by the third electric core 152 into the first direct current to supply power to the battery management subunit 153.

[0103] Specifically, the second power conversion module 5 detects the power supply voltage of the energy storage battery pack 2 in real time, and converts the power supply voltage of the energy storage battery pack 2 into a second voltage signal and transmits the second voltage signal to the energy management unit 14. When the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 simultaneously supply power abnormally, the energy management unit 14 outputs a second closing signal to the second power conversion module 5 to control the second power conversion module 5 to stop working, and simultaneously outputs a fourth opening signal to the fifth power converter 151 to control the fifth power converter 151 to convert the direct current output by the third electric core 152 into the first direct current to supply power to the battery management subunit 153, so that the battery management subunit 153 can also work normally when the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 simultaneously supply power abnormally.

[0104] Further, Figure 7 is another structure diagram of an energy storage power supply system according to an embodiment of the present application, referring to Figure 7 The first power conversion module 4 comprises a first power converter 41 and a first detection unit 42.

[0105] The output end of the power grid 6 is connected with the first end of the first power converter 41, and the second end of the first power converter 41 is connected with the first end of the energy storage control module 1. The first power converter 41 is used for converting the received alternating current into the first direct current and supplying power to the energy storage control module 1.

[0106] The first detection unit 42 is connected with the energy storage control module 1. The first detection unit 42 is used for detecting the power supply voltage of the uninterruptible power supply module 3 in real time, and converting the power supply voltage of the uninterruptible power supply module 3 into a first voltage signal and transmitting the first voltage signal to the energy storage control module 1.

[0107] Specifically, the first detection unit 42 detects the power supply voltage of the uninterruptible power supply module 3 in real time, and converts the power supply voltage of the uninterruptible power supply module 3 into a first voltage signal and transmits the first voltage signal to the energy storage control module 1. When the power grid 6 and the uninterruptible power supply module 3 simultaneously supply power abnormally, the energy storage control module 1 sends a first closing signal to the first power conversion module 4, and simultaneously outputs a first opening signal to the second power conversion module 5 to control the second power conversion module 5 to convert the direct current output by the energy storage battery pack 2 into the first direct current to supply power to the energy storage control module 1, so that the energy storage control module 1 can work normally.

[0108] Further, Figure 8 is another structure diagram of an energy storage power supply system according to an embodiment of the present application, referring to Figure 8 The second power conversion module 5 comprises a second power converter 51 and a second detection unit 52.

[0109] The first end of the energy storage battery pack 2 is connected with the first end of the second power converter 51, the second end of the second power converter 51 is connected with the second end of the energy storage control unit 11, the second power converter 51 is used for receiving the first opening signal, and converting the direct current output by the energy storage battery pack 2 into the first direct current and supplying power for the energy storage control unit 11;

[0110] The second detection unit 52 is connected with the energy storage control unit 11, and the second detection unit 52 is used for detecting the power supply voltage of the energy storage battery pack 2 in real time and transmitting the power supply voltage of the energy storage battery pack 2 to the energy storage control unit 11 as an energy storage voltage signal.

[0111] Specifically, the second detection unit 52 is used for detecting the power supply voltage of the energy storage battery pack 2 in real time and transmitting the power supply voltage of the energy storage battery pack 2 to the energy storage control unit 11 as an energy storage voltage signal, and the energy storage control unit 11 outputs an energy storage closing signal to the second power conversion module 5 and outputs a power supply unit opening signal to the power supply unit 12 when the power grid 6, the uninterruptible power supply module 3 and the energy storage battery pack 2 simultaneously supply power abnormally, so as to control the power supply unit 12 to supply power for the energy storage control unit 11, so that the energy storage control unit 11 can work normally.

[0112] Further, Figure 9 is another structural schematic diagram of an energy storage power supply system according to an embodiment of the present application, referring to Figure 9 The uninterruptible power supply module 3 comprises an uninterruptible power supply unit 31 and a third detection unit 32.

[0113] The output end of the power grid 6 is connected with the first end of the uninterruptible power supply unit 31, the second end of the uninterruptible power supply unit 31 is connected with the first end of the first power conversion module 4, and the third end of the uninterruptible power supply unit 31 is connected with the third detection unit 32.

[0114] The third detection unit 32 is used for detecting the power supply voltage of the power grid 6 in real time and sending an uninterruptible power supply opening signal to the uninterruptible power supply unit 31 when the power grid 6 supplies power abnormally, and the uninterruptible power supply unit 31 is used for receiving the uninterruptible power supply opening signal and supplying power for the first power conversion module 4.

[0115] Specifically, the third detection unit 32 is used for detecting the power supply voltage of the power grid 6 in real time and sending an uninterruptible power supply opening signal to the uninterruptible power supply unit 31 when the power grid 6 supplies power abnormally, so as to control the uninterruptible power supply unit 31 to supply power for the first power conversion module 4, so that the energy storage control module 1 can work normally.

[0116] Further, Figure 10 is another structural schematic diagram of an energy storage power supply system according to an embodiment of the present application, referring to Figure 10 The energy storage power supply system further comprises:

[0117] energy storage converter 7;

[0118] The first end of the energy storage converter 7 is connected with the output end of the power grid 6, the second end of the energy storage converter 7 is connected with the second end of the charge-discharge control unit 13, and the third end of the charge-discharge control unit 13 is connected with the energy storage battery pack 2.

[0119] Specifically, when the energy storage battery pack 2 is insufficient, the energy storage converter 7 can convert the alternating current of the power grid 6 into direct current and supply power to the energy storage battery pack 2 through the charge-discharge control unit 13. In the off-grid state, the energy storage battery pack 2 can transmit direct current to the energy storage converter 7 through the charge-discharge control unit 13, and the energy storage converter 7 converts the received direct current into alternating current to realize power supply for the alternating current load.

[0120] It should be understood that the various forms of the flow shown above can be reordered, added or deleted steps. For example, the steps described in the present application can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solution of the present application can be achieved, which is not limited herein.

[0121] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An energy storage power supply system, characterized by, The energy storage power supply system comprises: a storage control module, an energy storage battery pack, an uninterruptible power supply module, a first power conversion module and a second power conversion module; an output end of a power grid is connected with a first end of the first power conversion module, a second end of the first power conversion module is connected with a first end of the storage control module, and the first power conversion module is used for converting received alternating current into first direct current and supplying power to the storage control module; an output end of the power grid is connected with a first end of the uninterruptible power supply module, a second end of the uninterruptible power supply module is connected with a first end of the first power conversion module, and the uninterruptible power supply module is used for detecting a power supply voltage of the power grid in real time and supplying power to the first power conversion module when power supply of the power grid is abnormal; a first end of the energy storage battery pack is connected with a first end of the second power conversion module, a second end of the second power conversion module is connected with a second end of the storage control module, and the first power conversion module is further used for detecting a power supply voltage of the uninterruptible power supply module in real time and converting the power supply voltage of the uninterruptible power supply module into a first voltage signal and transmitting the first voltage signal to the storage control module; the storage control module is used for receiving the first voltage signal, outputting a first closing signal to the first power conversion module and outputting a first opening signal to the second power conversion module; the first power conversion module is used for receiving the first closing signal and stopping working; and the second power conversion module is used for receiving the first opening signal, converting direct current output by the energy storage battery pack into first direct current and supplying power to the storage control module.

2. The energy storage power supply system according to claim 1, wherein the storage control module comprises a storage control unit and a power supply unit; a first end of the storage control unit is connected with a second end of the first power conversion module, a second end of the storage control unit is connected with a second end of the second power conversion module, and a third end of the storage control unit is connected with the power supply unit; the storage control unit is used for receiving a first voltage signal, outputting a first closing signal to the first power conversion module and outputting a first opening signal to the second power conversion module; the second power conversion module is used for detecting a power supply voltage of the energy storage battery pack in real time, converting the power supply voltage of the energy storage battery pack into an energy storage voltage signal and transmitting the energy storage voltage signal to the storage control unit; the storage control unit is used for receiving an energy storage voltage signal, outputting an energy storage closing signal to the second power conversion module and outputting a power supply unit opening signal to the power supply unit; the power supply unit is used for receiving the power supply unit opening signal and supplying power to the storage control unit.

3. The energy storage power supply system according to claim 1, wherein the storage control module comprises a charge-discharge control unit, an energy management unit and a battery management unit; The second end of the first power conversion module is connected to the first end of the charge-discharge control unit, the first end of the energy management unit, and the first end of the battery management unit. The first power conversion module is used to convert the received AC power into the first DC power to supply power to the charge-discharge control unit, the energy management unit, and the battery management unit. The second terminal of the second power conversion module is connected to the second terminal of the charge / discharge control unit, the second terminal of the energy management unit, and the second terminal of the battery management unit. The first power conversion module is used to detect the supply voltage of the uninterruptible power supply module in real time and convert the supply voltage of the uninterruptible power supply module into a first voltage signal and transmit it to the energy management unit. The energy management unit is used to receive the first voltage signal and output a first shutdown signal to the first power conversion module, and simultaneously output a first turn-on signal to the second power conversion module. The second power conversion module is used to receive the first turn-on signal and convert the DC power output by the energy storage battery pack into a first DC power to supply power to the charge / discharge control unit, the energy management unit, and the battery management unit.

4. The energy storage power supply system according to claim 3, characterized in that, The energy management unit includes a third power converter, a controller, a first battery cell, and an energy management subunit; The first end of the energy management subunit is connected to the second end of the first power conversion module, the second end of the energy management subunit is connected to the second end of the second power conversion module, the third end of the energy management subunit is connected to the first end of the third power converter, and the second end of the third power converter is connected to the first battery cell; the first battery cell is connected to the power supply end of the controller, and the first battery cell is used to supply power to the controller; The first end of the controller is connected to the second power conversion module. The second power conversion module is used to detect the power supply voltage of the energy storage battery pack in real time and convert the power supply voltage of the energy storage battery pack into a second voltage signal and transmit it to the controller. The second terminal of the controller is connected to the third terminal of the third power converter. The controller is used to receive a second voltage signal and output a second shutdown signal to the second power conversion module, while simultaneously outputting a second turn-on signal to the third power converter. The third power converter is used to receive the second turn-on signal and convert the DC power output from the first cell into the first DC power to power the energy management subunit; The third terminal of the controller is connected to the first power conversion module. The first power conversion module is used to detect the power supply voltage of the uninterruptible power supply module in real time and convert the power supply voltage of the uninterruptible power supply module into a first voltage signal and transmit it to the controller. The controller is used to receive the first voltage signal and output a first shutdown signal to the first power conversion module, and at the same time output a first turn-on signal to the second power conversion module.

5. The energy storage power supply system according to claim 3, characterized in that, The charge and discharge control unit comprises a fourth power converter, a second electric core and a charge and discharge control subunit; The first end of the charge and discharge control subunit is connected with the second end of the first power conversion module and the second end of the second power conversion module, the second end of the charge and discharge control subunit is connected with the first end of the fourth power converter, and the second end of the fourth power converter is connected with the second electric core; The second power conversion module is used for detecting the power supply voltage of the energy storage battery pack in real time, and converting the power supply voltage of the energy storage battery pack into a second voltage signal and transmitting the second voltage signal to the energy management unit; The energy management unit is used for receiving the second voltage signal, outputting a second closing signal to the second power conversion module, and outputting a third opening signal to the fourth power converter; The fourth power converter is used for receiving the third opening signal, converting the direct current output by the second electric core into first direct current, and supplying power to the charge and discharge control subunit.

6. The energy storage power supply system according to claim 3, wherein The battery management unit comprises a fifth power converter, a third electric core and a battery management subunit; The first end of the battery management subunit is connected with the second end of the first power conversion module, the second end of the battery management subunit is connected with the second end of the second power conversion module, the third end of the battery management subunit is connected with the first end of the fifth power converter, and the second end of the fifth power converter is connected with the third electric core; The second power conversion module is used for detecting the power supply voltage of the energy storage battery pack in real time, and converting the power supply voltage of the energy storage battery pack into a second voltage signal and transmitting the second voltage signal to the energy management unit; The energy management unit is used for receiving the second voltage signal, outputting a second closing signal to the second power conversion module, and outputting a fourth opening signal to the fifth power converter; The fifth power converter is used for receiving the fourth opening signal, converting the direct current output by the third electric core into first direct current, and supplying power to the battery management subunit.

7. The energy storage power supply system according to claim 1, wherein The first power conversion module comprises a first power converter and a first detection unit; The output end of the power grid is connected with the first end of the first power converter, the second end of the first power converter is connected with the first end of the energy storage control module, and the first power converter is used for converting the received alternating current into first direct current and supplying power to the energy storage control module; The first detection unit is connected with the energy storage control module, and the first detection unit is used for detecting the power supply voltage of the uninterruptible power supply module in real time, and converting the power supply voltage of the uninterruptible power supply module into a first voltage signal and transmitting the first voltage signal to the energy storage control module.

8. The energy storage power supply system according to claim 2, wherein The second power conversion module comprises a second power converter and a second detection unit; The first end of the energy storage battery pack is connected with the first end of the second power converter, the second end of the second power converter is connected with the second end of the energy storage control unit, the second power converter is used for receiving the first opening signal, converting the direct current output by the energy storage battery pack into first direct current, and powering the energy storage control unit; The second detection unit is connected with the energy storage control unit, and the second detection unit is used for detecting the supply voltage of the energy storage battery pack in real time, and transmitting the supply voltage of the energy storage battery pack to the energy storage control unit as an energy storage voltage signal.

9. The energy storage power supply system according to claim 1, characterized in that, The uninterruptible power supply module comprises an uninterruptible power supply unit and a third detection unit; The output end of the power grid is connected with the first end of the uninterruptible power supply unit, the second end of the uninterruptible power supply unit is connected with the first end of the first power conversion module, and the third end of the uninterruptible power supply unit is connected with the third detection unit; The third detection unit is used for detecting the supply voltage of the power grid in real time, and sending an uninterruptible power supply opening signal to the uninterruptible power supply unit when the power supply of the power grid is abnormal; the uninterruptible power supply unit is used for receiving the uninterruptible power supply opening signal and powering the first power conversion module.

10. The energy storage power supply system of claim 3, wherein, Further comprising: An energy storage converter; The first end of the energy storage converter is connected with the output end of the power grid, the second end of the energy storage converter is connected with the second end of the charge and discharge control unit, and the third end of the charge and discharge control unit is connected with the energy storage battery pack.

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