Charging pile black start method, target system, electronic equipment and storage medium

Abstract

The invention discloses a charging pile black start method, a target system, electronic equipment and a storage medium, and belongs to the technical field of computers. The method is applied to a target system. A charging pile is connected with a DC bus through a first power converter. The photovoltaic module is connected with the direct-current bus through the second power converter; the power grid is connected with the direct-current bus through the third power converter; the energy storage battery is connected with the direct-current bus through the fourth power converter; the method comprises the steps that under the condition that the voltage of a direct current bus is lower than the starting voltage of a target first power converter, at least one of a photovoltaic module, a power grid and an energy storage battery supplies power to the direct current bus, so that the voltage of the direct current bus is boosted; and when the voltage of the direct-current bus is raised to be greater than the starting voltage of the target first power converter, the direct-current bus supplies power to the target first power converter so as to control a target charging pile corresponding to the target first power converter to start.

Description

Technical Field

[0001] This application belongs to the field of computer technology, and particularly relates to a method for black starting a charging pile, a target system, an electronic device, and a storage medium. Background Art

[0002] In the field of photovoltaic energy storage charging, as a charging infrastructure that can achieve bidirectional power flow, a charging pile can draw power from the power grid or a DC bus and support power supply to household loads. When the power grid or the DC bus loses power and causes the charging pile to lose power, the charging pile needs to be started through black start.

[0003] Generally, an uninterruptible power supply is set in the photovoltaic energy storage charging system, and the charging pile is started through the uninterruptible power supply when the power grid or the DC bus loses power. However, this method undoubtedly increases the cost of black starting the charging pile. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a method for black starting a charging pile, a target system, an electronic device, and a storage medium to reduce the cost of black starting the charging pile.

[0005] In a first aspect, this application provides a method for black starting a charging pile, which is applied to a target system. The target system includes at least one charging pile and a DC bus, and the target system further includes at least one of a photovoltaic module, a power grid, and a storage battery. The number of photovoltaic modules is at least one, the number of power grids is at least one, and the number of storage batteries is at least one. The charging pile is connected to the DC bus through a first power converter; the photovoltaic module is connected to the DC bus through a second power converter; the power grid is connected to the DC bus through a third power converter; the storage battery is connected to the DC bus through a fourth power converter; the method includes:

[0006] When the voltage of the DC bus is lower than the starting voltage of the target first power converter, at least one of the photovoltaic module, the power grid, and the storage battery supplies power to the DC bus to raise the voltage of the DC bus;

[0007] When the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter.

[0008] According to the charging pile black start method of the present application, when the voltage of the DC bus is lower than the starting voltage of the target first power converter, at least one of the photovoltaic module, the power grid, and the energy storage battery supplies power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, at least one of the photovoltaic module, the power grid, and the energy storage battery supplies power to the DC bus until the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, enabling the charging pile to start, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile, and reducing the cost of the black start of the charging pile.

[0009] According to an embodiment of the present application, at least one of the photovoltaic module, the power grid, and the energy storage battery supplying power to the DC bus includes:

[0010] For any energy storage battery, when the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth power converter to start the fourth power converter and supply power to the DC bus.

[0011] According to an embodiment of the present application, the fourth power converter includes a fourth auxiliary power supply and a fourth controller; for any energy storage battery, when the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth power converter to start the fourth power converter and supply power to the DC bus, including:

[0012] When the black start switch is closed, the energy storage battery supplies power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller;

[0013] The fourth controller controls the energy storage battery to supply power to the DC bus.

[0014] According to an embodiment of the present application, the fourth power converter further includes a target contact; the fourth controller controlling the energy storage battery to supply power to the DC bus includes:

[0015] The fourth controller controls the target contact to close to form a closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus;

[0016] When the black start switch is open, the target contact remains closed, and the fourth controller controls the energy storage battery to continuously supply power to the DC bus.

[0017] According to an embodiment of the present application, the number of black start switches is at least one, and each black start switch connects a fourth auxiliary power supply to at least one energy storage battery.

[0018] According to an embodiment of the present application, power is supplied to the DC bus by at least one of a photovoltaic module, a power grid, and an energy storage battery, including:

[0019] For any photovoltaic module, when the output voltage of the photovoltaic module is greater than the startup voltage of the second power converter, the second power converter starts up and supplies power to the DC bus.

[0020] According to an embodiment of the present application, the second power converter includes a second auxiliary power supply and a second controller; for any photovoltaic module, when the output voltage of the photovoltaic module is greater than the startup voltage of the second power converter, the second power converter starts up and supplies power to the DC bus, including:

[0021] When the voltage of the photovoltaic module is greater than the startup voltage of the second auxiliary power supply, the second auxiliary power supply starts up and supplies power to the second controller;

[0022] The second controller controls the photovoltaic module to supply power to the DC bus.

[0023] According to an embodiment of the present application, power is supplied to the DC bus by at least one of a photovoltaic module, a power grid, and an energy storage battery, including:

[0024] For any power grid, when the voltage of the power grid is greater than the startup voltage of the third power converter, the third power converter starts up and supplies power to the DC bus.

[0025] According to an embodiment of the present application, the third power converter includes a third auxiliary power supply and a third controller; for any power grid, when the voltage of the power grid is greater than the startup voltage of the third power converter, the third power converter starts up and supplies power to the DC bus, including:

[0026] When the voltage of the power grid is greater than the startup voltage of the third auxiliary power supply, the third auxiliary power supply starts up and supplies power to the third controller;

[0027] The third controller controls the power grid to supply power to the DC bus.

[0028] According to an embodiment of the present application, each first power converter includes a first auxiliary power supply and a first controller; the DC bus supplies power to a target first power converter to control the startup of a target charging pile corresponding to the target first power converter, including:

[0029] The DC bus supplies power to the first auxiliary power supply to start up the first auxiliary power supply;

[0030] The first auxiliary power supply supplies power to the first controller to enable the first controller to instruct at least one target charging pile to start up.

[0031] In a second aspect, the present application provides a target system, which is used to execute the charging pile black start method as described in the first aspect.

[0032] In a third aspect, the present application provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the charging pile black start method as described in the first aspect above is implemented.

[0033] In a fourth aspect, the present application provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the charging pile black start method as described in the first aspect above is implemented.

[0034] In a fifth aspect, the present application provides a computer program product, including a computer program. When the computer program is executed by a processor, the charging pile black start method as described in the first aspect above is implemented.

[0035] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0036] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0037] Figure 1 is one of the flow schematic diagrams of the charging pile black start method provided by the embodiment of the present application;

[0038] Figure 2 is another flow schematic diagram of the charging pile black start method provided by the embodiment of the present application;

[0039] Figure 3 is one of the structural schematic diagrams of the target system provided by the embodiment of the present application;

[0040] Figure 4 is another structural schematic diagram of the target system provided by the embodiment of the present application;

[0041] Figure 5 is yet another structural schematic diagram of the target system provided by the embodiment of the present application;

[0042] Figure 6 is still another structural schematic diagram of the target system provided by the embodiment of the present application;

[0043] Figure 7 is yet another structural schematic diagram of the target system provided by the embodiment of the present application;

[0044] Figure 8 is still another structural schematic diagram of the target system provided by the embodiment of the present application;

[0045] Figure 9 It is the seventh structural schematic diagram of the target system provided by the embodiments of the present application;

[0046] Figure 10 It is the structural schematic diagram of the electronic device provided by the embodiments of the present application. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0048] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0049] Next, in conjunction with the accompanying drawings, the black start method for charging piles, target system, electronic device, and readable storage medium provided by the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0050] Among them, the black start method for charging piles can be applied to a terminal, and specifically can be executed by hardware or software in the terminal.

[0051] The terminal includes, but is not limited to, portable communication devices such as mobile phones or tablet computers having a touch-sensitive surface (for example, a touch screen display and / or a touchpad). It should also be understood that in some embodiments, the terminal may not be a portable communication device, but a desktop computer having a touch-sensitive surface (for example, a touch screen display and / or a touchpad).

[0052] In the following various embodiments, a terminal including a display and a touch-sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, a mouse, and a joystick.

[0053] The black start method for charging piles provided by the embodiments of the present application. The execution subject of the black start method for charging piles can be an electronic device or a functional module or functional entity in the electronic device that can implement the black start method for charging piles. The electronic devices mentioned in the embodiments of the present application include, but are not limited to, mobile phones, tablet computers, computers, cameras, wearable devices, etc. Hereinafter, taking the electronic device as the execution subject as an example, the black start method for charging piles provided by the embodiments of the present application will be described.

[0054] In some embodiments, the black start method for charging piles provided by the present application can be applied to a target system. The target system includes at least one charging pile and a DC bus. The target system further includes at least one of a photovoltaic module, a power grid, and an energy storage battery. The number of photovoltaic modules is at least one, the number of power grids is at least one, and the number of energy storage batteries is at least one. The charging pile is connected to the DC bus through a first power converter; the photovoltaic module is connected to the DC bus through a second power converter; the power grid is connected to the DC bus through a third power converter; the energy storage battery is connected to the DC bus through a fourth power converter.

[0055] As Figure 1 shown, the black start method for charging piles includes: step 110 and step 120.

[0056] Step 110: When the voltage of the DC bus is lower than the starting voltage of the target first power converter, at least one of the photovoltaic module, the power grid, and the energy storage battery supplies power to the DC bus to raise the voltage of the DC bus.

[0057] In actual execution, when the DC bus loses power, the voltage of the DC bus is lower than the starting voltage of the target first power converter. The target first power converter connects the DC bus and the charging pile. When the voltage of the DC bus is lower than the starting voltage of the target first power converter, resulting in the non-start of the target first power converter, the charging pile has no voltage or current source and cannot start.

[0058] In some embodiments, the DC bus can be connected to at least one first power converter, and each first power converter is respectively connected to a charging pile. The target first power converter is at least one of the first power converters.

[0059] In some embodiments, when the voltage of the DC bus is lower than the starting voltage of the target first power converter, any one of the energy storage batteries can supply power to the DC bus to raise the voltage of the DC bus.

[0060] In some embodiments, when the voltage of the DC bus is lower than the starting voltage of the target first power converter, it can be indicated to close the black start switches corresponding to any one or more energy storage batteries, so that the energy storage batteries supply power to the DC bus to raise the voltage of the DC bus.

[0061] In some embodiments, when the voltage of the DC bus is lower than the startup voltage of the target first power converter, any one of the power grids can supply power to the DC bus to raise the voltage of the DC bus.

[0062] In some embodiments, when the voltage of the DC bus is lower than the startup voltage of the target first power converter, it can be indicated to close the black start switches corresponding to any one or more power grids, so that the power grids supply power to the DC bus to raise the voltage of the DC bus.

[0063] In some embodiments, when the voltage of the DC bus is lower than the startup voltage of the target first power converter, any one of the photovoltaic modules can supply power to the DC bus to raise the voltage of the DC bus.

[0064] In some embodiments, when the voltage of the DC bus is lower than the startup voltage of the target first power converter, it can be indicated to close the black start switches corresponding to any one or more photovoltaic modules, so that the photovoltaic modules supply power to the DC bus to raise the voltage of the DC bus.

[0065] Step 120: When the voltage of the DC bus rises to be greater than the startup voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the startup of the target charging pile corresponding to the target first power converter.

[0066] In actual execution, when at least one of the photovoltaic modules, the power grid, and the energy storage battery supplies power to the DC bus to continuously raise the voltage of the DC bus until the voltage of the DC bus is greater than the startup voltage of the target first power converter, the DC bus supplies power to the target first power converter to enable the target first power converter to control the startup of the target charging pile corresponding to the target first power converter.

[0067] According to the charging pile black start method of the present application, when the voltage of the DC bus is lower than the startup voltage of the target first power converter, at least one of the photovoltaic modules, the power grid, and the energy storage battery supplies power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the startup voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the startup of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, at least one of the photovoltaic modules, the power grid, and the energy storage battery supplies power to the DC bus until the voltage of the DC bus rises to be greater than the startup voltage of the target first power converter, enabling the charging pile to start, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile, and reducing the cost of charging pile black start.

[0068] In some embodiments, for any energy storage battery, when the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth power converter, so that the fourth power converter starts and supplies power to the DC bus.

[0069] In actual implementation, each energy storage battery is connected to the DC bus through a fourth power converter. When the voltage of the DC bus is lower than the starting voltage of the target first power converter, any one or more black start switches corresponding to the energy storage battery can be turned off, so that the energy storage battery supplies power to the corresponding fourth power converter to start the fourth power converter, and then the fourth power converter supplies power to the DC bus.

[0070] In some embodiments, the fourth power converter may include an auxiliary power supply. When the voltage of the DC bus is lower than the starting voltage of the target first power converter, the energy storage battery supplies power to the auxiliary power supply in the fourth power converter, so that the fourth power converter starts, and then the fourth power converter supplies power to the DC bus.

[0071] In actual implementation, any one or more black start switches corresponding to the energy storage battery may be the black start switch between each energy storage battery and the fourth power converter corresponding to the energy storage battery, or may be the black start switch that simultaneously controls the connection between each energy storage battery in multiple energy storage batteries and the fourth power converter corresponding to the energy storage battery.

[0072] According to the black start method of the charging pile of the present application, when the voltage of the DC bus is lower than the starting voltage of the target first power converter, when the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth power converter, so that the fourth power converter starts and supplies power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, the energy storage battery supplies power to the DC bus until the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, so that the charging pile starts, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile and reducing the cost of black starting the charging pile.

[0073] In some embodiments, the fourth power converter may include a fourth auxiliary power supply and a fourth controller; when the black start switch is closed, the energy storage battery can supply power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller controls the energy storage battery to supply power to the DC bus.

[0074] In actual implementation, the energy storage battery can be connected to the fourth auxiliary power supply in the fourth power converter through a black start switch. The fourth auxiliary power supply is connected to the fourth controller, and the fourth controller can also be connected to the energy storage battery and the DC bus.

[0075] In some embodiments, when the black start switch between the energy storage battery and the fourth auxiliary power supply in the fourth power converter is closed to establish a connection between the energy storage battery and the fourth auxiliary power supply, the energy storage battery can supply power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller controls the energy storage battery to supply power to the DC bus.

[0076] In some embodiments, when the energy storage battery supplies power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller, the fourth controller can send a power supply instruction to the energy storage battery to make the energy storage battery supply power to the DC bus.

[0077] In some embodiments, when the energy storage battery supplies power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller, the fourth controller can establish a connection between the energy storage battery and the DC bus to make the energy storage battery supply power to the DC bus.

[0078] In some embodiments, when the energy storage battery supplies power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller, the fourth controller can send a high-level signal to the energy storage battery, so that after the energy storage battery obtains the high-level signal, it supplies power to the DC bus.

[0079] According to the black start method of the charging pile of the present application, when the voltage of the DC bus is lower than the start voltage of the target first power converter, and when the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth auxiliary power supply in the fourth power converter to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller controls the energy storage battery to supply power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the start voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, the energy storage battery supplies power to the DC bus until the voltage of the DC bus rises to be greater than the start voltage of the target first power converter, enabling the charging pile to start, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile, and reducing the cost of black starting the charging pile.

[0080] In some embodiments, the fourth power converter may further include a target contact; the fourth controller may control the target contact to close to form a closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus; when the black start switch is off, the target contact remains closed, and the fourth controller controls the energy storage battery to continuously supply power to the DC bus.

[0081] In actual implementation, the target contact may be a contact switch. The target contact can establish a connection between the energy storage battery and the DC bus.

[0082] In some embodiments, when the black start switch is closed, the energy storage battery can supply power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller can send a closing instruction (such as a high-level signal) to the target contact to control the target contact to close and form a closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus.

[0083] In some embodiments, after the fourth controller controls the target contact to close, the target contact can remain in a continuously closed state. Even when the black start switch is off, the target contact still remains closed, and the closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus is not disconnected. The fourth controller can control the energy storage battery to continuously supply power to the DC bus.

[0084] According to the black start method of the charging pile of the present application, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth auxiliary power supply in the fourth power converter to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller controls the target contact to close to form a closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus; when the black start switch is off, the target contact remains closed, and the fourth controller controls the energy storage battery to continuously supply power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, the energy storage battery supplies power to the DC bus until the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, enabling the charging pile to start, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile, and reducing the cost of black starting the charging pile.

[0085] In some embodiments, the number of black start switches is at least one, and each black start switch connects a fourth auxiliary power supply to at least one energy storage battery.

[0086] In actual implementation, the number of black start switches can be one or more.

[0087] In some embodiments, the number of black start switches can be one. One black start switch can connect each energy storage battery in at least one energy storage battery to a fourth auxiliary power supply. When the black start switch is closed, each energy storage battery in the multiple energy storage batteries controlled by the black start switch supplies power to the fourth power converter corresponding to the energy storage battery, so that the fourth power converter starts and supplies power to the DC bus.

[0088] In some embodiments, when the number of black start switches is one and the black start switch is closed, each energy storage battery in the multiple energy storage batteries controlled by the black start switch supplies power to the fourth auxiliary power supply in the fourth power converter corresponding to the energy storage battery, so that the fourth auxiliary power supply starts and supplies power to the fourth controller; the fourth controller controls the energy storage battery to supply power to the DC bus.

[0089] In some embodiments, the number of black start switches can be multiple. Each black start switch in the multiple black start switches connects each energy storage battery in at least one energy storage battery to the fourth power converter corresponding to the energy storage battery. In some embodiments, when the black start switch is closed, the energy storage battery connected by the black start switch supplies power to the fourth power converter, so that the fourth power converter starts and supplies power to the DC bus.

[0090] According to the black start method of the charging pile of the present application, when the voltage of the DC bus is lower than the starting voltage of the target first power converter, at least one of the photovoltaic module, the power grid and the energy storage battery supplies power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, at least one of the photovoltaic module, the power grid and the energy storage battery supplies power to the DC bus until the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, so that the charging pile starts, avoiding the additional setting of an uninterruptible power supply to supply power to the charging pile and reducing the cost of black starting the charging pile.

[0091] In some embodiments, for any photovoltaic module, when the output voltage of the photovoltaic module is greater than the starting voltage of the second power converter, the second power converter starts and supplies power to the DC bus.

[0092] In actual implementation, each photovoltaic module is connected to the DC bus through a second power converter. When the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of at least one photovoltaic module is greater than the starting voltage of the second power converter corresponding to this photovoltaic module, this photovoltaic module can supply power to the corresponding second power converter to start the second power converter, and then the second power converter supplies power to the DC bus.

[0093] In some embodiments, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of at least one photovoltaic module is greater than the starting voltage of the second power converter corresponding to this photovoltaic module, the target photovoltaic module can supply power to the second power converter corresponding to the target photovoltaic module to start the second power converter, and then the second power converter supplies power to the DC bus. The target photovoltaic module can be any one of the photovoltaic modules whose output voltage is greater than the starting voltage of the corresponding second power converter.

[0094] In some embodiments, the second power converter may include an auxiliary power supply. When the voltage of the DC bus is lower than the starting voltage of the target first power converter, the photovoltaic module supplies power to the auxiliary power supply in the second power converter to start the second power converter, and then the second power converter supplies power to the DC bus.

[0095] According to the black start method of the charging pile of the present application, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of the photovoltaic module is greater than the starting voltage of the second power converter, the second power converter starts and supplies power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, the photovoltaic module supplies power to the DC bus until the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, enabling the charging pile to start, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile, and reducing the cost of black starting the charging pile.

[0096] In some embodiments, the second power converter may include a second auxiliary power supply and a second controller; for any photovoltaic module, when the voltage of the photovoltaic module is greater than the starting voltage of the second auxiliary power supply, the second auxiliary power supply starts and supplies power to the second controller; the second controller controls the photovoltaic module to supply power to the DC bus.

[0097] In actual implementation, the photovoltaic module can be connected to the second auxiliary power supply in the second power converter. The second auxiliary power supply is connected to the second controller, and the second controller can also be connected to the photovoltaic module and the DC bus.

[0098] In some embodiments, the photovoltaic module can supply power to the second auxiliary power supply in the second power converter to start the second auxiliary power supply and supply power to the second controller; the second controller controls the photovoltaic module to supply power to the DC bus.

[0099] In some embodiments, when the photovoltaic module supplies power to the second auxiliary power supply to start the second auxiliary power supply and supply power to the second controller, the second controller can send a power supply instruction to the photovoltaic module to make the photovoltaic module supply power to the DC bus.

[0100] In some embodiments, when the photovoltaic module supplies power to the second auxiliary power supply to start the second auxiliary power supply and supply power to the second controller, the second controller can send a high-level signal to the photovoltaic module, so that after the photovoltaic module obtains the high-level signal, it supplies power to the DC bus.

[0101] According to the black start method of the charging pile of the present application, when the voltage of the DC bus is lower than the start voltage of the target first power converter, the photovoltaic module supplies power to the second auxiliary power supply in the second power converter to start the second auxiliary power supply and supply power to the second controller; the second controller controls the photovoltaic module to supply power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the start voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, the photovoltaic module supplies power to the DC bus until the voltage of the DC bus rises to be greater than the start voltage of the target first power converter, so that the charging pile starts, avoiding the additional setting of an uninterruptible power supply to supply power to the charging pile and reducing the cost of the black start of the charging pile.

[0102] In some embodiments, for any power grid, when the voltage of the power grid is greater than the start voltage of the third power converter, the third power converter starts and supplies power to the DC bus.

[0103] In actual implementation, each power grid is connected to the DC bus through a third power converter. When the voltage of the DC bus is lower than the start voltage of the target first power converter and the output voltage of at least one power grid is greater than the start voltage of the third power converter corresponding to the power grid, the power grid can supply power to the corresponding third power converter to start the third power converter, and then the third power converter supplies power to the DC bus.

[0104] In some embodiments, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of at least one power grid is greater than the starting voltage of the third power converter corresponding to that power grid, the target power grid can supply power to the third power converter corresponding to the target power grid to start the third power converter, and then the third power converter supplies power to the DC bus. The target power grid can be any one of the power grids whose output voltage is greater than the starting voltage of the corresponding third power converter.

[0105] In some embodiments, the third power converter may include an auxiliary power supply. When the voltage of the DC bus is lower than the starting voltage of the target first power converter, the power grid supplies power to the auxiliary power supply in the third power converter to start the third power converter, and then the third power converter supplies power to the DC bus.

[0106] According to the black start method of the charging pile of the present application, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the voltage of the power grid is greater than the starting voltage of the third power converter, the third power converter starts and supplies power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, the power grid supplies power to the DC bus until the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, enabling the charging pile to start, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile, and reducing the cost of black starting the charging pile.

[0107] In some embodiments, the third power converter may include a third auxiliary power supply and a third controller; for any power grid, when the voltage of the power grid is greater than the starting voltage of the third auxiliary power supply, the third auxiliary power supply starts and supplies power to the third controller; the third controller controls the power grid to supply power to the DC bus.

[0108] In actual implementation, the power grid can be connected to the third auxiliary power supply in the third power converter, the third auxiliary power supply is connected to the third controller, and the third controller can also be connected to the power grid and the DC bus.

[0109] In some embodiments, the power grid can supply power to the third auxiliary power supply in the third power converter to start the third auxiliary power supply and supply power to the third controller; the third controller controls the power grid to supply power to the DC bus.

[0110] In some embodiments, when the power grid supplies power to the third auxiliary power supply to start the third auxiliary power supply and supply power to the third controller, the third controller may send a power supply instruction to the power grid to make the power grid supply power to the DC bus.

[0111] In some embodiments, when the power grid supplies power to the third auxiliary power supply to start the third auxiliary power supply and supply power to the third controller, the third controller may send a high-level signal to the power grid, so that after the power grid obtains the high-level signal, it supplies power to the DC bus.

[0112] According to the black start method of the charging pile of the present application, when the voltage of the DC bus is lower than the starting voltage of the target first power converter, the power grid supplies power to the third auxiliary power supply in the third power converter to start the third auxiliary power supply and supply power to the third controller; the third controller controls the power grid to supply power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, the power grid supplies power to the DC bus until the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, enabling the charging pile to start, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile, and reducing the cost of black starting the charging pile.

[0113] In some embodiments, each first power converter includes a first auxiliary power supply and a first controller; the DC bus can supply power to the first auxiliary power supply to start the first auxiliary power supply; the first auxiliary power supply supplies power to the first controller to make the first controller instruct at least one target charging pile to start.

[0114] In actual implementation, each first power converter in at least one first power converter includes a first auxiliary power supply and a first controller.

[0115] In some embodiments, when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus can supply power to the first auxiliary power supply of the target first power converter to start the first auxiliary power supply; the first auxiliary power supply supplies power to the first controller of the target first power converter to make the first controller instruct the target charging pile to start. The target first power converter may be any one or more of at least one first power converter whose starting voltage is less than the bus voltage during the process of raising the voltage of the DC bus.

[0116] In some embodiments, each first power converter may be connected to at least one charging pile.

[0117] In some embodiments, when the voltage of the DC bus is raised to be greater than the startup voltage of the target first power converter, the DC bus can supply power to the first auxiliary power supply of the target first power converter to start the first auxiliary power supply; the first auxiliary power supply supplies power to the first controller of the target first power converter to instruct the target charging pile to start. The target charging pile can be one or more of the charging piles corresponding to the target first power converter.

[0118] According to the charging pile black start method provided by the embodiments of the present application, when the voltage of the DC bus is lower than the startup voltage of the target first power converter, at least one of the photovoltaic module, the power grid, and the energy storage battery supplies power to the DC bus to raise the voltage of the DC bus; when the voltage of the DC bus is raised to be greater than the startup voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the startup of the target charging pile corresponding to the target first power converter, so that when the DC bus loses power and cannot supply power to the target first power converter connecting the DC bus and the charging pile, at least one of the photovoltaic module, the power grid, and the energy storage battery supplies power to the DC bus until the voltage of the DC bus is raised to be greater than the startup voltage of the target first power converter, enabling the charging pile to start, avoiding the need to additionally set up an uninterruptible power supply to supply power to the charging pile, and reducing the cost of the charging pile black start.

[0119] To better understand the charging pile black start method provided by the embodiments of the present application, further explanation is given below. It should be understood that the following discussion is only exemplary.

[0120] The present application provides a charging pile black start method, and the specific steps can be as Figure 2 shown:

[0121] Step 210: For any energy storage battery, when the voltage of the DC bus is lower than the startup voltage of the target first power converter and the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth power converter to start the fourth power converter and supply power to the DC bus.

[0122] In some embodiments, the charging pile black start method provided by the present application can be applied to a target system. As Figure 3 shown, the target system includes at least one charging pile and a DC bus. The target system further includes at least one of a photovoltaic module, a power grid, and an energy storage battery. The number of photovoltaic modules is at least one, the number of power grids is at least one, and the number of energy storage batteries is at least one. The charging pile is connected to the DC bus through a first power converter; the photovoltaic module is connected to the DC bus through a second power converter; the power grid is connected to the DC bus through a third power converter; and the energy storage battery is connected to the DC bus through a fourth power converter.

[0123] In actual implementation, each energy storage battery is connected to the DC bus through a fourth power converter. When the voltage of the DC bus is lower than the starting voltage of the target first power converter, any one or more black start switches corresponding to the energy storage batteries can be turned off, so that the energy storage battery supplies power to the corresponding fourth power converter to start the fourth power converter, and then the fourth power converter supplies power to the DC bus.

[0124] In actual implementation, any one or more black start switches corresponding to the energy storage batteries can be the black start switches between each energy storage battery and the corresponding fourth power converter, or the black start switches that simultaneously control the connection between each energy storage battery in multiple energy storage batteries and the corresponding fourth power converter.

[0125] In actual implementation, as Figure 4 shown, the energy storage battery can be connected to the fourth auxiliary power supply in the fourth power converter through the black start switch. The fourth auxiliary power supply is connected to the fourth controller, and the fourth controller can also be connected to the energy storage battery and the DC bus.

[0126] In some embodiments, the fourth power converter can include a fourth auxiliary power supply and a fourth controller; when the black start switch is closed, the energy storage battery can supply power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller controls the energy storage battery to supply power to the DC bus.

[0127] In some embodiments, when the black start switch between the energy storage battery and the fourth auxiliary power supply in the fourth power converter is closed to establish a connection between the energy storage battery and the fourth auxiliary power supply, the energy storage battery can supply power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller controls the energy storage battery to supply power to the DC bus.

[0128] In some embodiments, when the energy storage battery supplies power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller, the fourth controller can send a power supply instruction to the energy storage battery to make the energy storage battery supply power to the DC bus.

[0129] In some embodiments, when the energy storage battery supplies power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller, the fourth controller can establish a connection between the energy storage battery and the DC bus to make the energy storage battery supply power to the DC bus.

[0130] In some embodiments, when the energy storage battery supplies power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller, the fourth controller can send a high-level signal to the energy storage battery, so that after the energy storage battery obtains the high-level signal, it supplies power to the DC bus.

[0131] In some embodiments, as Figure 5 shown, the fourth power converter may further include a target contact; the fourth controller may control the target contact to close to form a closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus; when the black start switch is off, the target contact remains closed, and the fourth controller controls the energy storage battery to continuously supply power to the DC bus.

[0132] In actual implementation, the target contact may be a contact switch. The target contact can establish a connection between the energy storage battery and the DC bus.

[0133] In some embodiments, when the black start switch is closed, the energy storage battery may supply power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller may send a closing instruction (such as a high-level signal) to the target contact to control the target contact to close, forming a closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus.

[0134] In some embodiments, after the fourth controller controls the target contact to close, the target contact may remain in a continuously closed state. Even when the black start switch is off, the target contact remains closed, and the closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus is not disconnected. The fourth controller may control the energy storage battery to continuously supply power to the DC bus.

[0135] In some embodiments, the number of black start switches is at least one, and each energy storage battery in at least one energy storage battery is connected to a fourth auxiliary power supply through a black start switch.

[0136] In actual implementation, the number of black start switches may be one or more.

[0137] In some embodiments, as Figure 4 shown, the number of black start switches may be one. One black start switch may connect each energy storage battery in at least one energy storage battery to a fourth auxiliary power supply at the same time. When the black start switch is closed, each energy storage battery in the multiple energy storage batteries controlled by the black start switch supplies power to the corresponding fourth power converter of the energy storage battery to start the fourth power converter and supply power to the DC bus.

[0138] In some embodiments, when the number of black start switches is one and the black start switch is closed, each energy storage battery in the multiple energy storage batteries controlled by the black start switch supplies power to the fourth auxiliary power supply in the corresponding fourth power converter of the energy storage battery to start the fourth auxiliary power supply and supply power to the fourth controller; the fourth controller controls the energy storage battery to supply power to the DC bus.

[0139] In some embodiments, as Figure 6 shown, the number of black start switches may be multiple. Each black start switch among the multiple black start switches connects the black start switch between each energy storage battery of at least one energy storage battery and the fourth power converter corresponding to the energy storage battery. In some embodiments, when the black start switch is closed, the energy storage battery connected to the black start switch supplies power to the fourth power converter, so that the fourth power converter starts and supplies power to the DC bus.

[0140] Step 220: For any photovoltaic module, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of the photovoltaic module is greater than the starting voltage of the second power converter, the second power converter starts and supplies power to the DC bus.

[0141] In actual implementation, each photovoltaic module is connected to the DC bus through a second power converter. When the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of at least one photovoltaic module is greater than the starting voltage of the second power converter corresponding to the photovoltaic module, the photovoltaic module can supply power to the corresponding second power converter to start the second power converter, and then the second power converter supplies power to the DC bus.

[0142] In some embodiments, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of at least one photovoltaic module is greater than the starting voltage of the second power converter corresponding to the photovoltaic module, the target photovoltaic module can supply power to the second power converter corresponding to the target photovoltaic module to start the second power converter, and then the second power converter supplies power to the DC bus. The target photovoltaic module can be any one of the photovoltaic modules whose output voltage is greater than the starting voltage of the corresponding second power converter.

[0143] In some embodiments, as Figure 7 shown, the second power converter may include a second auxiliary power supply and a second controller; for any photovoltaic module, when the voltage of the photovoltaic module is greater than the starting voltage of the second auxiliary power supply, the second auxiliary power supply starts and supplies power to the second controller; the second controller controls the photovoltaic module to supply power to the DC bus.

[0144] In actual implementation, the photovoltaic module may be connected to the second auxiliary power supply in the second power converter, the second auxiliary power supply is connected to the second controller, and the second controller may also be connected to the photovoltaic module and the DC bus.

[0145] In some embodiments, the photovoltaic module can supply power to the second auxiliary power supply in the second power converter to start the second auxiliary power supply and supply power to the second controller; the second controller controls the photovoltaic module to supply power to the DC bus.

[0146] In some embodiments, when the photovoltaic module supplies power to the second auxiliary power supply to start the second auxiliary power supply and supply power to the second controller, the second controller can send a power supply instruction to the photovoltaic module to make the photovoltaic module supply power to the DC bus.

[0147] In some embodiments, when the photovoltaic module supplies power to the second auxiliary power supply to start the second auxiliary power supply and supply power to the second controller, the second controller can send a high-level signal to the photovoltaic module, so that after the photovoltaic module obtains the high-level signal, it supplies power to the DC bus.

[0148] Step 230: For any power grid, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the voltage of the power grid is greater than the starting voltage of the third power converter, the third power converter starts and supplies power to the DC bus.

[0149] In actual implementation, each power grid is connected to the DC bus through a third power converter. When the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of at least one power grid is greater than the starting voltage of the third power converter corresponding to this power grid, this power grid can supply power to the corresponding third power converter to start the third power converter, and then the third power converter supplies power to the DC bus.

[0150] In some embodiments, when the voltage of the DC bus is lower than the starting voltage of the target first power converter and the output voltage of at least one power grid is greater than the starting voltage of the third power converter corresponding to this power grid, the target power grid can supply power to the third power converter corresponding to the target power grid to start the third power converter, and then the third power converter supplies power to the DC bus. The target power grid can be any one of the power grids whose output voltage is greater than the starting voltage of the corresponding third power converter.

[0151] In some embodiments, as Figure 8 shown, the third power converter can include a third auxiliary power supply and a third controller; for any power grid, when the voltage of the power grid is greater than the starting voltage of the third auxiliary power supply, the third auxiliary power supply starts and supplies power to the third controller; the third controller controls the power grid to supply power to the DC bus.

[0152] In actual implementation, the power grid can be connected to the third auxiliary power supply in the third power converter, the third auxiliary power supply is connected to the third controller, and the third controller can also be connected to the power grid and the DC bus.

[0153] In some embodiments, the power grid can supply power to a third auxiliary power supply in a third power converter to start the third auxiliary power supply and supply power to a third controller; the third controller controls the power grid to supply power to the DC bus.

[0154] In some embodiments, when the power grid supplies power to a third auxiliary power supply to start the third auxiliary power supply and supply power to a third controller, the third controller can send a power supply instruction to the power grid to make the power grid supply power to the DC bus.

[0155] In some embodiments, when the power grid supplies power to a third auxiliary power supply to start the third auxiliary power supply and supply power to a third controller, the third controller can send a high-level signal to the power grid, so that after the power grid obtains the high-level signal, it supplies power to the DC bus.

[0156] Step 240: When the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the first auxiliary power supply of the target first power converter to start the first auxiliary power supply; the first auxiliary power supply supplies power to the first controller to make the first controller instruct at least one target charging pile to start.

[0157] In actual implementation, each first power converter in at least one first power converter includes a first auxiliary power supply and a first controller.

[0158] In some embodiments, as Figure 9 shown, when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus can supply power to the first auxiliary power supply of the target first power converter to start the first auxiliary power supply; the first auxiliary power supply supplies power to the first controller of the target first power converter to make the first controller instruct the target charging pile to start. The target first power converter can be any one or more of at least one first power converter whose starting voltage is less than the bus voltage during the process of the DC bus voltage rising.

[0159] In some embodiments, each first power converter can be connected to at least one charging pile.

[0160] In some embodiments, when the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus can supply power to the first auxiliary power supply of the target first power converter to start the first auxiliary power supply; the first auxiliary power supply supplies power to the first controller of the target first power converter to make the first controller instruct the target charging pile to start. The target charging pile can be one or more of the charging piles corresponding to the target first power converter.

[0161] The embodiment of the present application further provides a target system, which is used to execute the charging pile black start method as described in the first aspect.

[0162] In some embodiments, the target system includes at least one charging pile and a DC bus. The target system further includes at least one of a photovoltaic module, a power grid, and an energy storage battery. The number of photovoltaic modules is at least one, the number of power grids is at least one, and the number of energy storage batteries is at least one. The charging pile is connected to the DC bus through a first power converter; the photovoltaic module is connected to the DC bus through a second power converter; the power grid is connected to the DC bus through a third power converter; and the energy storage battery is connected to the DC bus through a fourth power converter.

[0163] The target system in the embodiment of the present application can be deployed on an electronic device or on a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices other than the terminal. Exemplarily, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a handheld computer, a vehicle-mounted electronic device, a Mobile Internet Device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It can also be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc. The embodiment of the present application does not make specific limitations.

[0164] The target system in the embodiment of the present application can be deployed on a device with an operating system. The operating system can be a Microsoft (Windows) operating system, an Android operating system, an IOS operating system, or other possible operating systems. The embodiment of the present application does not make specific limitations.

[0165] In some embodiments, as Figure 10 shown, the embodiment of the present application further provides an electronic device 1000, including a processor 1001, a memory 1002, and a computer program stored on the memory 1002 and executable on the processor 1001. When the program is executed by the processor 1001, it implements each process of the above-mentioned embodiment of the charging pile black start method and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0166] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0167] The embodiments of the present application further provide a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements each process of the above-mentioned embodiment of the charging pile black start method and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0168] Among them, the processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks or optical discs, etc.

[0169] The embodiments of the present application further provide a computer program product, including a computer program, which implements the above-mentioned charging pile black start method when executed by a processor.

[0170] Among them, the processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks or optical discs, etc.

[0171] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement each process of the above-mentioned embodiment of the charging pile black start method and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0172] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0173] It should be noted that in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0174] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on such understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc) and includes several instructions for causing a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0175] The embodiments of the present application have been described above with reference to the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit and scope protected by the claims of the present application, can also make many forms, all of which fall within the protection scope of the present application.

[0176] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0177] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A black start method for a charging pile, characterized in that, Applied to a target system, the target system includes at least one charging pile and a DC bus, and the target system further includes at least one of a photovoltaic module, a power grid, and an energy storage battery. The number of the photovoltaic modules is at least one, the number of the power grids is at least one, and the number of the energy storage batteries is at least one. The charging pile is connected to the DC bus through a first power converter; the photovoltaic module is connected to the DC bus through a second power converter; the power grid is connected to the DC bus through a third power converter; the energy storage battery is connected to the DC bus through a fourth power converter; the method includes: When the voltage of the DC bus is lower than the starting voltage of the target first power converter, at least one of the photovoltaic module, the power grid, and the energy storage battery supplies power to the DC bus to raise the voltage of the DC bus. When the voltage of the DC bus rises to be greater than the starting voltage of the target first power converter, the DC bus supplies power to the target first power converter to control the start of the target charging pile corresponding to the target first power converter.

2. The black start method of the charging pile according to claim 1, characterized in that The supplying power to the DC bus by at least one of the photovoltaic module, the power grid, and the energy storage battery includes: For any one of the energy storage batteries, when the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth power converter to start the fourth power converter and supply power to the DC bus.

3. The black start method of the charging pile according to claim 2, characterized in that, The fourth power converter includes a fourth auxiliary power supply and a fourth controller; for any one of the energy storage batteries, when the black start switch corresponding to the energy storage battery is closed, the energy storage battery supplies power to the fourth power converter to start the fourth power converter and supply power to the DC bus, including: When the black start switch is closed, the energy storage battery supplies power to the fourth auxiliary power supply to start the fourth auxiliary power supply and supply power to the fourth controller. The fourth controller controls the energy storage battery to supply power to the DC bus.

4. The black start method of the charging pile according to claim 3, characterized in that The fourth power converter further includes a target contact; the fourth controller controls the energy storage battery to supply power to the DC bus, including: The fourth controller controls the target contact to close to form a closed loop among the energy storage battery, the fourth controller, the fourth auxiliary power supply, and the DC bus. When the black start switch is open, the target contact remains closed, and the fourth controller controls the energy storage battery to continuously supply power to the DC bus.

5. The black start method of the charging pile according to claim 3, characterized in that, The number of the black start switches is at least one, and each black start switch connects one fourth auxiliary power supply to at least one energy storage battery.

6. The black start method of the charging pile according to claim 1, wherein The supplying power to the DC bus by at least one of the photovoltaic module, the power grid, and the energy storage battery includes: For any one of the photovoltaic modules, when the output voltage of the photovoltaic module is greater than the starting voltage of the second power converter, the second power converter starts and supplies power to the DC bus.

7. The black start method of the charging pile according to claim 6, wherein The second power converter includes a second auxiliary power supply and a second controller; for any one of the photovoltaic modules, when the output voltage of the photovoltaic module is greater than the startup voltage of the second power converter, the second power converter starts up and supplies power to the DC bus, including: When the voltage of the photovoltaic module is greater than the startup voltage of the second auxiliary power supply, the second auxiliary power supply starts up and supplies power to the second controller; The second controller controls the photovoltaic module to supply power to the DC bus.

8. The black start method of the charging pile according to claim 1, wherein The power supply to the DC bus by at least one of the photovoltaic module, the power grid, and the energy storage battery includes: For any one of the power grids, when the voltage of the power grid is greater than the startup voltage of the third power converter, the third power converter starts up and supplies power to the DC bus.

9. The black start method of the charging pile according to claim 8, characterized in that, The third power converter includes a third auxiliary power supply and a third controller; for any one of the power grids, when the voltage of the power grid is greater than the startup voltage of the third power converter, the third power converter starts up and supplies power to the DC bus, including: When the voltage of the power grid is greater than the startup voltage of the third auxiliary power supply, the third auxiliary power supply starts up and supplies power to the third controller; The third controller controls the power grid to supply power to the DC bus.

10. The black start method of the charging pile according to claim 1, characterized in that, Each of the first power converters includes a first auxiliary power supply and a first controller; the DC bus supplies power to the target first power converter to control the startup of the target charging pile corresponding to the target first power converter, including: The DC bus supplies power to the first auxiliary power supply to start up the first auxiliary power supply; The first auxiliary power supply supplies power to the first controller to make the first controller instruct the at least one target charging pile to start up.

11. A target system, characterized in that, The target system is used to execute the charging pile black start method according to any one of claims 1-10.

12. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the charging pile black start method according to any one of claims 1-10.

13. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the charging pile black start method according to any one of claims 1-10.

14. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the charging pile black start method according to any one of claims 1-10.

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