Charging control method, device, integrated storage and charging system, medium and product

Abstract

The embodiments of the present application disclose a charging control method, device, integrated storage and charging system, medium and product, which are applied to the integrated storage and charging system, wherein the integrated storage and charging system includes a charging device and an energy storage device, and the method includes: in response to a first electric device being in a discharge mode, obtaining state parameters of a charging object; the charging object includes at least two of the following: an energy storage supplement system, a power grid, a second electric device and an energy storage device; the state parameters include at least one or more of the following: a signal of whether the second electric device is charged, a power transmission time period, a charge state and a remaining energy state; based on the state parameters, determining a target charging object to receive the electric energy delivered by the first electric device; when the first electric device is in a discharge process, controlling the charging device to receive the electric energy delivered by the first electric device, so as to deliver the electric energy to the target charging object.

Description

Technical Field

[0001] The present application relates to, but is not limited to, the field of charging and discharging technology, and in particular to a charging control method, device, integrated storage and charging system, medium, and product. Background Art

[0002] With the development of new energy generation technologies, electric vehicles transmit electricity to charging devices, which then transmit electricity to energy storage systems or the power grid, achieving energy arbitrage and increasing user income. Hybrid charging systems, which may include both the power grid and integrated storage and charging devices, have emerged. How to use these hybrid charging systems to charge a variety of charging devices in a variety of scenarios has become a new demand. Summary of the Invention

[0003] In view of this, the embodiments of the present application provide at least a charging control method, device, integrated storage and charging system, medium and product.

[0004] The technical solution of the embodiment of the present application is implemented as follows:

[0005] On the one hand, an embodiment of the present application provides a charging control method, which is applied to a storage-charging integrated system, wherein the storage-charging integrated system includes a charging device and an energy storage device.

[0006] One end of the energy storage device is connected to the DC bus, and the other end of the energy storage device is connected to the charging device. The energy storage device is used to charge the electric device through the charging device, or output the electric energy in the energy storage device to the DC bus;

[0007] The charging device includes a bidirectional direct current direct current converter (DC / DC), one end of which is connected to a charging gun and the other end is connected to the DC bus; the charging device is used to transmit the electric energy in the electric device to the energy storage device and / or the power grid, or to transmit the electric energy from the power grid and / or the energy storage device to the electric device through the bidirectional DC / DC device;

[0008] The method includes: in response to a first electric device being in a discharge mode, obtaining state parameters of a charging object; the charging objects include at least two of the following: an energy storage supplement system, a power grid, a second electric device, and an energy storage device; the state parameters include at least one or more of the following parameters: a signal indicating whether the second electric device is being charged, a power transmission time period, a state of charge, and a remaining energy state; based on the state parameters, determining a target charging object to receive the electric energy delivered by the first electric device; the target charging object is one or more of the charging objects; while the first electric device is in a discharge process, controlling the charging device to receive the electric energy delivered by the first electric device, so as to deliver electric energy to the target charging object.

[0009] In an embodiment of the present application, the target charging object that receives the electric energy transmitted by the first electric device can be determined through the state parameters of the charging object. Through this method, the target charging object that needs to receive the electric energy transmitted by the first electric device can be determined from multiple charging objects, so that the charging device can be controlled to transmit electric energy to the target charging object after receiving the electric energy transmitted by the first electric device to charge the target charging object, thereby realizing the need to charge various charging objects in multiple scenarios through the hybrid charging system.

[0010] In some embodiments, the method includes: when the target charging object is one of the multiple charging objects, determining the ratio of electric energy to be delivered to each target charging object; when the first electric device is in the process of discharging, controlling the charging device to receive the electric energy delivered by the first electric device to deliver electric energy to the target charging object, including: when the first electric device is in the process of discharging, controlling the charging device to receive the electric energy delivered by the first electric device to deliver electric energy to each target charging object at the ratio of electric energy to each target charging object, so as to charge each target charging object.

[0011] In an embodiment of the present application, when there are multiple target charging objects, electric energy is delivered to each target charging object accordingly by adjusting the proportion of electric energy delivered to each target charging object, thereby realizing a scenario in which multiple target charging objects are charged simultaneously.

[0012] In some embodiments, the method includes: when the target charging object is multiple of the charging objects, based on the transmission rules, determining the priority order of transmitting electric energy to the multiple target charging objects; when the first electric device is in the process of discharging, controlling the charging device to receive the electric energy transmitted by the first electric device to transmit electric energy to the target charging object, including: when the first electric device is in the process of discharging, controlling the charging device to receive the electric energy transmitted by the first electric device to transmit electric energy to the first target charging object with a first priority order; based on the stop transmission condition of the first target charging object, determining whether the first target charging object has completed charging; when the first target charging object has completed charging, controlling the charging device to receive the electric energy transmitted by the first electric device to transmit electric energy to the second target charging object with a second priority order.

[0013] In an embodiment of the present application, when there are multiple target charging objects, the order of transmitting electric energy to the multiple target charging objects is determined based on the transmission rules, so that the multiple target charging objects can be charged in the order in which the electric energy is transmitted to the multiple target charging objects. In this way, by charging the multiple target charging objects one by one, the target charging objects that complete charging first can be put into operation as soon as possible.

[0014] In some embodiments, the method includes: determining whether the target charging object has completed charging based on the power transmission stopping condition of the target charging object; if the target charging object has completed charging, determining whether there is a charging object to be charged based on the state parameters of charging objects other than the target charging object; if it is determined that there is a charging object to be charged, determining the charging object to be charged as the target charging object.

[0015] In an embodiment of the present application, when the current target charging object has completed charging, the target charging object is re-determined to charge the newly determined target charging object. Through this method, the newly determined target charging object can be charged while the electric device still supports the transmission of electric energy. This not only avoids the first electric device and the storage and charging integrated system from entering the charging configuration stage again, but also reduces the number of charging objects with charging needs in the hybrid charging system.

[0016] In some embodiments, based on the state parameters, determining the target charging object that receives the electric energy transmitted by the first electric device includes: determining that the second electric device is the target charging object when the signal indicating whether the second electric device is charging indicates charging; determining that the energy storage supplement system is the target charging object when the state of charge value of the energy storage supplement system is less than or equal to a first charge threshold, and / or the remaining energy state value of the energy storage supplement system is less than or equal to a first remaining energy state threshold; determining that the energy storage device is the target charging object when the state of charge value of the energy storage device is less than or equal to a second charge threshold, and / or the remaining energy state value of the energy storage device is less than or equal to a second remaining energy state threshold; and determining that the power grid is the target charging object when the current time period enters the power transmission time period.

[0017] In an embodiment of the present application, a method is provided for determining whether a second electric device, an energy storage supplement system, a power grid, and an energy storage device have charging requirements. This method can be used to obtain a target charging object, so that the charging device can transmit the electric energy to the target charging object after receiving the electric energy transmitted by the first electric device, thereby charging the target charging object.

[0018] In some embodiments, the method includes: in response to the first electric device being in a charging mode, determining the charging demand information of the first electric device; based on the charging demand information, determining the target charging mode for the storage and charging integrated system to charge the first electric device, wherein the target charging mode corresponds to a target charging parameter; based on the target charging parameter corresponding to the target charging mode, charging the first electric device; wherein, in the case where the target charging mode includes a first charging mode, the target charging parameter corresponding to the first charging mode includes a first charging parameter, and the charging power indicated by the first charging parameter is greater than 300 kilowatts.

[0019] In an embodiment of the present application, a target charging mode for charging the first electric device is determined based on the charging requirement information of the first electric device, and then the first electric device is charged based on the target charging parameters corresponding to the target charging mode. This method can determine the most suitable charging mode for charging the first electric device based on the charging requirement information of the first electric device when there are multiple charging modes.

[0020] In some embodiments, the input power of the energy storage device is less than 150 kilowatts; in the first charging mode, the output power of the energy storage device is greater than or equal to 300 kilowatts.

[0021] In the embodiments of the present application, input power and output power ranges of the energy storage device are provided, and the normal operation of the energy storage device is ensured by controlling the input power or output power of the energy storage device to be within the corresponding range.

[0022] On the other hand, an embodiment of the present application provides an integrated storage and charging system, comprising an energy storage device, a charging device and a charging control device; wherein, one end of the energy storage device is connected to a DC bus to output the electric energy in the energy storage device to a power grid; the other end of the energy storage device is connected to the charging device to charge the electric device through the charging device and a charging gun; the energy storage device is used to charge the electric device through the charging device, or to output the electric energy in the energy storage device to the DC bus; the charging device includes a bidirectional DC / DC device, one end of the charging device is connected to the charging gun, and the other end is connected to the DC bus; the charging device is used to transmit the electric energy in the electric device to the energy storage device and / or the power grid through the bidirectional DC / DC device, or The device transmits the electric energy of the power grid and / or the electric energy of the energy storage device to the electric device; the charging control device is used to obtain the state parameters of the charging object in response to the first electric device being in the discharge mode; the charging object includes at least two of the following: the energy storage supplement system, the power grid, the second electric device and the energy storage device; the state parameters include at least one or more of the following parameters: a signal of whether the second electric device is charging, a power transmission time period, a charge state and a remaining energy state; based on the state parameters, a target charging object for receiving the electric energy transmitted by the first electric device is determined; the target charging object is one or more of the charging objects; when the first electric device is in the process of discharging, the charging device is controlled to receive the electric energy transmitted by the first electric device, so as to transmit electric energy to the target charging object.

[0023] On the other hand, an embodiment of the present application provides a charging control device, which is applied to a storage-charging integrated system, wherein the storage-charging integrated system includes a charging device and an energy storage device.

[0024] One end of the energy storage device is connected to the DC bus, and the other end of the energy storage device is connected to the charging device. The energy storage device is used to charge the electric device through the charging device, or output the electric energy in the energy storage device to the DC bus;

[0025] The charging device includes a bidirectional DC / DC device, one end of which is connected to a charging gun and the other end is connected to the DC bus; the charging device is used to transmit the electric energy in the electric device to the energy storage device and / or the power grid through the bidirectional DC / DC device, or to transmit the electric energy of the power grid and / or the electric energy of the energy storage device to the electric device;

[0026] The device includes: an acquisition module, which is used to acquire state parameters of a charging object in response to the first electric device being in a discharge mode; the charging objects include at least two of the following: an energy storage supplement system, a power grid, a second electric device and an energy storage device; the state parameters include at least one or more of the following parameters: a signal indicating whether the second electric device is charging, a power transmission time period, a charge state and a remaining energy state; a first determination module, which is used to determine a target charging object for receiving the electric energy delivered by the first electric device based on the state parameters; the target charging object is one or more of the charging objects; a receiving module, which is used to control the charging device to receive the electric energy delivered by the first electric device during the process of the electric device being discharged, so as to deliver electric energy to the target charging object.

[0027] On the other hand, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which implements part or all of the steps in the above method when executed by a controller.

[0028] On the other hand, an embodiment of the present application provides a computer program product, including a computer program or instructions, which implements some or all of the above steps when executed by a controller.

[0029] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the technical solutions of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0031] Figure 1 A schematic diagram of a storage and charging system provided in an embodiment of the present application;

[0032] Figure 2A A schematic diagram of a hybrid charging system provided in an embodiment of the present application Figure 1 ;

[0033] Figure 2B Schematic diagram 2 of a hybrid charging system provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of the implementation process of a charging control method provided in an embodiment of the present application Figure 1 ;

[0035] Figure 4 Schematic diagram 2 of a charging control method according to an embodiment of the present application;

[0036] Figure 5 This is an architectural diagram of a V2G charging control method provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of a V2G charging control method according to an embodiment of the present application;

[0038] Figure 7 A schematic diagram of the structure of a charging control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions of this application are further elaborated in detail below with reference to the accompanying drawings and embodiments. The described embodiments should not be regarded as limiting this application. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0040] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0041] It should be pointed out that the terms "first\second\third" involved in the embodiments of the present application are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0042] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as generally understood by those skilled in the art in the art to which the embodiments of the present application belong. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0043] Vehicle-to-Grid (V2G) technology is a deep-dive application of vehicle-grid interaction. It uses electric vehicles as energy storage facilities, enabling charging during low-load periods and discharging to the grid during peak load periods through charging and discharging piles.

[0044] With the development of new energy generation technologies, electric vehicles transmit electricity to charging devices, which then transmit electricity to energy storage systems or the power grid, achieving energy arbitrage and increasing user income. Hybrid charging systems, which may include both the power grid and integrated storage and charging devices, have emerged. How to use these hybrid charging systems to charge a variety of charging devices in a variety of scenarios has become a new demand.

[0045] The embodiment of the present application provides a storage and charging integrated system, such as Figure 1 The diagram includes an energy storage device 212, a charging device 213 and a charging control device 214; wherein,

[0046] One end of the energy storage device 212 is connected to the DC bus 8 to output the electric energy in the energy storage device 212 to the power grid 10; the other end of the energy storage device 212 is connected to the charging device 213 to charge the electric device 2 through the charging device 213 and the charging gun 216; the energy storage device 212 is used to charge the electric device 2 through the charging device 213, or output the electric energy in the energy storage device 212 to the DC bus 8;

[0047] Here, the energy storage device 212 also includes a battery management system (BMS), where the BMS is responsible for monitoring the status of the batteries in the energy storage device, such as voltage, current, temperature, and battery health status.

[0048] The electric device can only be charged or discharged after being connected to the charging gun in the storage and charging system.

[0049] In some implementations, the electrical energy on the DC bus can also be transmitted to an energy storage device to charge the energy storage device.

[0050] The charging device includes a bidirectional DC / DC device, one end of the charging device 213 is connected to the charging gun 216, and the other end is connected to the DC bus 8;

[0051] The charging device 213 is used to transmit the electric energy in the electric device 2 to the energy storage device 212 and / or the power grid 10 through the bidirectional DC / DC device, or to transmit the electric energy of the power grid 10 and / or the electric energy of the energy storage device 212 to the electric device 2.

[0052] Here, the electric energy in the electric device 2 is direct current, and the electric energy in the energy storage device 212 is direct current. Therefore, the electric energy in the electric device 2 can be transmitted to the energy storage device 212 through a bidirectional DC / DC device, and / or the electric energy of the electric device 2 can be transmitted to the DC bus 8 through a bidirectional DC / DC device, and then the electric energy on the DC bus 8 is converted into alternating current by a bidirectional alternating current direct current converter (AC / DC) device 215 and then transmitted to the power grid 10; alternatively, the electric energy of the power grid can be converted into direct current by a bidirectional AC / DC device 215 and then transmitted to the DC bus 8, and then the electric energy on the DC bus 8 is transmitted to the electric device 2 through a bidirectional DC / DC device, and / or the electric energy of the energy storage device 212 can be transmitted to the electric device 2 through a bidirectional DC / DC device.

[0053] The charging device 213 also includes a charge control unit (CCU).

[0054] The charging control device 214 is used to obtain the state parameters of the charging object in response to the first electric device being in the discharge mode; the charging objects include at least two of the following: an energy storage supplement system, a power grid, a second electric device and an energy storage device; the state parameters include at least one or more of the following parameters: a signal indicating whether the second electric device is charging, a power transmission time period, a charge state and a remaining energy state; based on the state parameters, a target charging object for receiving the electric energy delivered by the first electric device is determined; the target charging object is one or more of the charging objects; when the first electric device is in the process of discharging, the charging device is controlled to receive the electric energy delivered by the first electric device so as to deliver electric energy to the target charging object.

[0055] In some embodiments, the charging control device 214 may be an Energy Management System (EMS).

[0056] Here, the integrated storage and charging system 21 also includes a wireless communication module 211 , so that the integrated storage and charging system 21 can complete information exchange with other systems in the hybrid charging system through the wireless communication module 211 .

[0057] In some embodiments, the charging control device can be independently arranged outside the energy storage device and the charging device in the storage-charging system to control the operation of the storage-charging system. For example, the charging control device can be an EMS. In this case, the EMS can communicate with the BMS in the energy storage device and the CCU in the charging device.

[0058] In other embodiments, the functions implemented by the charging control device can also be integrated with the various sub-modules of the storage-charging system (such as the energy storage device and the charging device) to coordinate the operation of the storage-charging system. For example, the functions implemented by the charging control device are fully or partially integrated in the CCU of the charging device, and the functions implemented by the charging control device are fully or partially integrated in the BMS of the energy storage device.

[0059] In the embodiments of the present application, this integrated energy storage and charging system, which includes both an energy storage device and a charging device, can meet the charging needs of electric devices in multiple scenarios. Furthermore, in the current market, different charging modes are provided to users simultaneously by adding additional transformers or expanding the transformer capacity. However, this method not only increases construction costs but also increases the floor space required. This integrated energy storage and charging system, however, can provide users with multiple charging modes simultaneously without the need for additional transformers, thus reducing construction costs.

[0060] In some embodiments, a ratio between the rated energy of the energy storage device and the rated power of the energy storage device is less than or equal to 1:4.

[0061] It should be noted that the unit of rated energy is generally watt-hour (Wh), while the unit of power is watt (W). The ratio here is the numerical ratio between the rated energy and the rated power, which is not greater than 1:3.

[0062] In some embodiments, the energy storage device and / or the charging device satisfies one or more of the following conditions:

[0063] The ratio between the rated energy of the energy storage device and the maximum discharge power of the energy storage device is not greater than 1:3;

[0064] The energy density of the energy storage device is greater than or equal to 380 watt-hours / liter;

[0065] The ratio between the rated energy of the energy storage device and the maximum charging power of the charging device is less than 1:4.

[0066] In the embodiments of the present application, by limiting the parameter value relationship of the energy storage device and / or the charging device, the battery in the energy storage device can be made relatively small in size and / or capacity, but with a large output, thereby saving the floor space of the hybrid charging system, saving site costs, and being more economical.

[0067] The following describes the overall structure of the hybrid charging system based on the storage and charging system. Figure 2A and Figure 2BAs shown, the hybrid charging system includes M AC charging modules 11, N integrated storage and charging systems 21, bidirectional AC / DC devices 215 corresponding to the N integrated storage and charging systems 21, an energy storage supplementary system 3, a photovoltaic system 4, an energy storage system 5, an energy meter 6, and a transformer 7. M and N are integers greater than 1. The modules in the hybrid charging system exchange information via communication lines.

[0068] The energy storage supplement system 3 includes an energy storage supplement control unit 31, P bidirectional DC / DC devices 311, and P battery cascade utilization battery packs 312 connected to the P bidirectional DC / DC devices 311. The photovoltaic system 4 includes a photovoltaic system control unit 41, Q photovoltaic panel devices 411, and Q maximum power point tracking (MPPT) devices 412 connected to the Q photovoltaic panel devices 411. The integrated storage and charging system 21 includes an energy storage device 212, a charging device 213, a charging gun 216, a charging control device 214, and a wireless communication module 211. Here, P and Q are integers greater than 1.

[0069] like Figure 2A As shown, M AC charging modules 11, N integrated storage and charging systems 21, energy storage supplementary system 3, photovoltaic system 4 and energy storage system 5 are respectively connected to the DC bus 8, and electric energy transmission can be achieved through the DC bus 8. Among them, the AC charging module 11 includes an AC control unit 113, a bidirectional direct current alternating current converter (DC / AC) device 111, and an AC charging pile 112 that can be connected to the bidirectional DC / AC device 111 via a three-phase wire (ABCN), wherein the A phase line, the B phase line, and the C phase line are three-phase electricity, and the N neutral line (neutral line) is used.

[0070] The transformer 7 and the load 9 are connected to the power grid 10, and the electric energy meter 6 is connected to the transformer 7 for determining the current electric energy of the transformer 7. The transformer 7 is used to provide electric energy to the load 9, or to provide electric energy to the electric device by providing electric energy to the AC charging module 11 and / or the storage and charging integrated system 21, so that the electric device can be charged through the power grid.

[0071] During implementation, when the load 9 requires less electric energy, the transformer 7 will still have surplus electric energy after providing electric energy to the load 9. When the electric device is connected to the charging gun 216 for charging, the transformer 7 can transmit the surplus electric energy to the AC charging module 11 and / or the storage-charging system 21 through the DC bus 8, thereby charging the electric device through the AC charging module 11 and / or the storage-charging system 21; when the load 9 requires more electric energy, the transformer 7 provides all the electric energy to the load 9. When the electric device is connected to the charging gun 216 for charging, energy can be released to the DC bus 8 through the energy storage device 212 in the energy storage supplement system 3, the photovoltaic system 4, the energy storage system 5 or the storage-charging system 21, thereby transmitting the energy on the DC bus 8 to the AC charging module 11 and / or the storage-charging system 21, and then charging the electric device through the AC charging module 11 and / or the storage-charging system 21.

[0072] like Figure 2B As shown, N integrated storage and charging systems 21 , the energy storage supplement system 3 , the photovoltaic system 4 and the energy storage system 5 are respectively connected to the DC bus 8 , and electric energy can be transmitted through the DC bus 8 .

[0073] M AC charging modules 11, a transformer 7 and a load 9 are connected to a power grid 10. An energy meter 6 is connected to the transformer 7 for determining the current power of the transformer 7. The transformer 7 is used to provide power to the load 9, or to provide power to the AC charging module 11 and / or the storage-charging integrated system 21, thereby enabling the electric device to be charged through the power grid. The AC charging module 11 includes an AC control unit 113 and an AC charging pile 112. The AC charging pile 112 can be connected to the power grid via a three-phase wire (ABCN).

[0074] During implementation, when the load 9 requires less electric energy, the transformer 7 will still have surplus electric energy after providing electric energy to the load 9. When the electric device is connected to the charging gun 216 for charging, the transformer 7 can transmit the surplus electric energy to the AC charging module 11 through the power grid 10, and / or transmit it to the storage-charging integrated system 21 through the DC bus 8, thereby charging the electric device through the AC charging module 11 and / or the storage-charging integrated system 21; when the load 9 requires more electric energy, the transformer 7 provides all the electric energy to the load 9. When the electric device is connected to the charging gun 216 for charging, energy can be released to the DC bus 8 through the energy storage supplement system 3, the photovoltaic system 4, the energy storage system 5 or the energy storage device 212 in the storage-charging integrated system 21, thereby transmitting the energy on the DC bus 8 to the AC charging module 11 and / or the storage-charging integrated system 21, and then charging the electric device through the AC charging module 11 and / or the storage-charging integrated system 21.

[0075] Therefore, this hybrid charging system can intelligently distribute energy, achieving a multi-scenario charging solution for electric devices without the need for transformer expansion or additions. Furthermore, by combining retired battery packs with a bidirectional DC / DC device to form an energy storage supplement system, retired battery packs can be reused. This energy storage supplement system utilizes natural cooling to manage thermal management, eliminating the need for an additional thermal management system and reducing the cost of setting up the hybrid charging system.

[0076] An embodiment of the present application provides a charging control method, which is applied to a storage-charging integrated system, wherein the storage-charging integrated system includes a charging device and an energy storage device, one end of the energy storage device is connected to a DC bus, and the other end of the energy storage device is connected to the charging device, and the energy storage device is used to charge the electric device through the charging device, or output the electric energy in the energy storage device to the DC bus; the charging device includes a bidirectional DC / DC device, one end of the charging device is connected to a charging gun, and the other end is connected to the DC bus; the charging device is used to transmit the electric energy in the electric device to the energy storage device and / or the power grid through the bidirectional DC / DC device, or transmit the electric energy of the power grid and / or the electric energy of the energy storage device to the electric device, such as Figure 3 As shown, the method may include steps S301 to S305:

[0077] Step S301: In response to the first electric device being in a discharge mode, obtaining state parameters of a charging object; the charging object includes at least two of the following: an energy storage supplementation system, a power grid, a second electric device, and an energy storage device; the state parameters include at least one or more of the following parameters: a signal indicating whether the second electric device is charging, a power transmission time period, a state of charge, and a remaining energy state;

[0078] Here, the transmission time period refers to the time period during which power transmission to the grid is permitted. Electric devices can be devices that are powered by electricity, such as electric vehicles, electric bicycles, electric toys, and other electronic devices with power batteries. The second electric device refers to a device connected to the hybrid charging system and requires charging via the hybrid charging system. A storage-and-charging system is a system that combines energy storage and charging functions. The state of charge (SOC) refers to the ratio of a battery's remaining capacity after a period of use or long-term disuse to its fully charged capacity. The state of energy (SOE) refers to the ratio of the battery's current stored energy to its maximum stored energy.

[0079] In some embodiments, when the charging object includes a power grid, the state parameter of the power grid is the power transmission time period; when the charging object includes an energy storage supplement system, the state parameter of the energy storage supplement system is the charge state and the remaining energy state of the energy storage supplement system; when the charging object includes an energy storage device, the state parameter of the energy storage device is the charge state and the remaining energy state of the energy storage device; when the charging object includes a second electric device, the state parameter of the second electric device includes a signal indicating whether the second electric device is charged.

[0080] In some embodiments, the signal of whether the second electric device is charged can be represented by 0 and 1, where when the signal of whether the second electric device is charged is 1, it indicates that the second electric device currently needs to be charged, and when the signal of whether the second electric device is charged is 0, it indicates that the second electric device currently does not need to be charged, for example, the second electric device is currently in discharge mode, or the second electric device is currently fully charged.

[0081] In some implementations, the state parameters of the second electric device may be obtained through a charging device.

[0082] Step S302: determining a target charging object to receive the electric energy transmitted by the first electric device based on the state parameter; the target charging object is one or more of the charging objects;

[0083] Here, the target charging object may be one or more charging objects to be charged determined from the charging objects, wherein the multiple charging objects to be charged refer to at least two charging objects, for example, 2 charging objects or 3 charging objects.

[0084] Step S303: When the first electric device is in the process of discharging, control the charging device to receive the electric energy transmitted by the first electric device, so as to transmit the electric energy to the target charging object.

[0085] Here, the process of the first electric device being in discharge refers to the process of transmitting the electric energy in the first electric device to the integrated storage and charging system.

[0086] In some embodiments, after receiving the electric energy transmitted by the first electric device, the integrated storage and charging system can transmit the received electric energy to the energy storage supplement system, thereby charging the energy storage supplement system; it can also transmit the received electric energy to the energy storage device, thereby charging the energy storage device; it can also transmit the received electric energy to the second electric device, thereby charging the second electric device; it can also transmit the received electric energy to the power grid, thereby powering the load of the power grid.

[0087] In some embodiments, by charging the target charging object through the first electric device during peak electricity consumption periods and charging the first electric device during off-peak electricity consumption periods, the purpose of electric energy arbitrage can be achieved through the difference between electricity prices between different electricity consumption periods.

[0088] In some embodiments, the target charging object can be single or multiple. When the target charging object is single, all the electric energy received from the first electric device can be delivered to the target charging object; when the target charging object is multiple, multiple target charging objects can be charged at the same time, or multiple target charging objects can be charged one by one.

[0089] In an embodiment of the present application, the target charging object that receives the electric energy transmitted by the first electric device can be determined through the state parameters of the charging object. Through this method, the target charging object that needs to receive the electric energy transmitted by the first electric device can be determined from multiple charging objects, so that the charging device can be controlled to transmit electric energy to the target charging object after receiving the electric energy transmitted by the first electric device to charge the target charging object, thereby realizing the need to charge various charging objects in multiple scenarios through the hybrid charging system.

[0090] In some embodiments, when the target charging object is a plurality of the charging objects, determining a transmission ratio of electric energy to each target charging object;

[0091] Here, the power delivery ratio for each target charging object can be calculated based on the system's default ratio determination method or configured by the user in the hybrid charging system's human-machine interface. The system's default ratio determination method can be based on an average of the number of target charging objects. For example, if there are two target charging objects, this method can yield a power delivery ratio of 50% and 50%.

[0092] It should be noted that the sum of the power transmission ratios of all target charging objects should be 100%.

[0093] The above step S303, in which the first electric device is in the process of discharging, controlling the charging device to receive the electric energy transmitted by the first electric device to transmit the electric energy to the target charging object, may include step S3031:

[0094] Step S3031: When the first electric device is in the process of discharging, the electric energy received by the first electric device is controlled to be transmitted to each target charging object at a transmission ratio of each target charging object, so as to charge each target charging object.

[0095] In some embodiments, charging multiple target charging objects simultaneously can be performed by controlling the charging device to deliver the electric energy received from the first electric device to the target charging objects according to the delivery ratio of the multiple target charging objects.

[0096] For example, when the target charging object includes a second electric device and an energy storage device, the transmission ratio of the second electric device is 40%, and the transmission ratio of the energy storage device is 60%. If the total amount of electricity received by the charging device is 20kW•h, the final amount of electricity received by the second electric device is 8kW•h, and the amount of electricity received by the energy storage device is 12kW•h.

[0097] It should be noted that during the process of charging multiple target charging objects, if the power transmission stop condition of the first electric device is triggered, charging of the multiple target charging objects will be stopped. Otherwise, the multiple target charging objects will be charged according to the transmission ratios corresponding to the multiple target objects.

[0098] In the above embodiment, when there are multiple target charging objects, the power transmission ratio to each target charging object is adjusted to transmit power to each target charging object, thereby realizing the scenario of charging multiple target charging objects at the same time.

[0099] In some embodiments, when the target charging object is a plurality of the charging objects, a priority order of transmitting electric energy to the plurality of target charging objects is determined based on a transmission rule;

[0100] Here, the transmission rule refers to a priority order for determining the transmission of electric energy to a plurality of charging target objects.

[0101] In some embodiments, the transmission rules may include a first priority, a second priority, a third priority, and a fourth priority, where the first priority may be the second electric device, the second priority may be the energy storage supplementation system, the third priority may be the energy storage device, and the fourth priority may be the power grid.

[0102] For example, when the multiple target charging objects include the energy storage supplement system, the second electric device and the power grid, the second electric device has the first priority, the energy storage supplement system has the second priority, and the power grid has the third priority.

[0103] The above step S303, in which the first electric device is in the process of discharging, controlling the charging device to receive the electric energy transmitted by the first electric device to transmit the electric energy to the target charging object, may include steps S3032 to S3034:

[0104] Step S3032: When the first electric device is in the process of discharging, controlling the charging device to receive the electric energy transmitted by the first electric device, so as to transmit the electric energy to the first target charging object having the first priority order;

[0105] In some embodiments, when multiple target charging objects include an energy storage supplement system, a second electric device, and a power grid, the target charging object corresponding to the first priority is the second electric device, so that when the first electric device is in the process of discharging, the charging device is controlled to receive the electric energy transmitted by the first electric device to transmit electric energy to the second electric device.

[0106] Step S3033: determining whether charging of the first target charging object is complete based on the power transmission stop condition of the first target charging object;

[0107] Step S3034: When the first target charging object is completely charged, control the charging device to receive the electric energy delivered by the first electric device, so as to deliver the electric energy to the second target charging object having the second priority order.

[0108] In some embodiments, when multiple target charging objects include an energy storage supplement system, a second electric device, and a power grid, the target charging object corresponding to the second priority is the energy storage supplement system, so that when the first electric device is in the process of discharging, the charging device is controlled to receive the electric energy transmitted by the first electric device to transmit electric energy to the energy storage supplement system.

[0109] In some embodiments, when there are three target charging objects, it is determined whether the second target charging object has completed charging based on the power transmission stop condition of the second target charging object; when the second target charging object has completed charging, the charging device is controlled to receive the electric energy transmitted by the first electric device to transmit electric energy to the third target charging object with the third priority order.

[0110] In some embodiments, when there are two target charging objects, whether the second target charging object has completed charging is determined based on the power transmission stop condition of the second target charging object; when the second target charging object has completed charging, it is determined that the multiple target charging objects have completed charging.

[0111] It should be noted that, during the process of charging multiple target charging objects, if the power transmission stop condition of the first electric device is triggered, charging of the multiple target charging objects will be stopped; otherwise, each target charging object will be charged one by one in order of priority.

[0112] In the above embodiment, when there are multiple target charging objects, the order of transmitting electric energy to the multiple target charging objects is determined based on the transmission rules, so that the multiple target charging objects can be charged in the order in which the electric energy is transmitted to the multiple target charging objects. In this way, by charging multiple target charging objects one by one, the target charging objects that complete charging first can be put into operation as soon as possible.

[0113] In some embodiments, after step S303, steps S304 to S305 may be further included:

[0114] Step S303: determining whether charging of the target charging object is completed based on the power transmission stop condition of the target charging object;

[0115] In some embodiments, when the target charging object is a second electric device, the conditions for stopping power transmission to the second electric device may include the second electric device being fully charged, the second electric device failing, and may also include battery overvoltage, battery overtemperature, battery overcurrent, battery insulation abnormality, etc. A fully charged second electric device means that the amount of power received by the second electric device has reached the required charging capacity of the second electric device. The required charging capacity may be set by the user on the human-machine interface of the second electric device, or may be determined by the system of the second electric device based on the current battery status parameters of the second electric device. A battery insulation abnormality refers to leakage of the electrolyte inside the battery, causing the liquid to seep out and damage the insulation layer, thereby forming a conductive loop between the battery module and the cell.

[0116] In some embodiments, when the target charging object is an energy storage supplement system, the conditions for stopping power transmission of the energy storage supplement system may include full charging of the energy storage supplement system, failure of the energy storage supplement system, and may also include battery overvoltage, battery overtemperature, battery overcurrent, battery insulation abnormality, etc. of the energy storage supplement system.

[0117] In some embodiments, when the target charging object is an energy storage device, the conditions for stopping power transmission of the energy storage device may include full charge of the energy storage device, energy storage device failure, and may also include battery overvoltage, battery overtemperature, battery overcurrent, battery insulation abnormality, etc.

[0118] It should be noted that for fault events such as battery insulation abnormalities, energy storage device failures, second electric equipment failures, and energy storage supplementary system failures, an alarm event corresponding to the fault event type may be triggered when the fault event occurs, and then the alarm event is sent to the charging control device in the storage-charging integrated system to enable the charging control device to determine whether the conditions for stopping power transmission of the target charging object are met.

[0119] In some embodiments, when the target charging object is the power grid, the power grid's power transmission stopping condition can be determined based on a set power transmission time period for transmitting power to the power grid, wherein the power transmission time period refers to the time period during which power can be transmitted to the power grid, which is generally set during peak power consumption periods.

[0120] In some embodiments, the target charging object may be single or multiple. When the target charging object is single, the charging control device needs to determine whether the target charging object meets the conditions for stopping power transmission; when the target charging object is multiple, the charging control device needs to judge the conditions for stopping power transmission for each target charging object.

[0121] In some implementations, when the target charging object satisfies the corresponding power transmission stop condition, it can be determined that the target charging object has completed charging.

[0122] Step S304: When charging of the target charging object is completed, determining whether there is a charging object to be charged based on the state parameters of charging objects other than the target charging object;

[0123] Here, during the process of charging the target charging object, if there are other charging objects that have charging needs, the charging control device can re-determine the target charging object that receives the electric energy delivered by the first electric device when the target charging object completes charging, or it can determine the occurrence of a termination discharge event and generate a termination discharge message for the storage and charging integrated device system.

[0124] It should be noted that, when the target charging object completes charging and the first electric device has not received the termination discharge message sent by the first electric device, that is, when the first electric device still supports discharge, the target charging object for receiving the electric energy transmitted by the first electric device can be re-determined.

[0125] In some embodiments, when the target charging object completes charging and the first electric device is still capable of discharging, the integrated storage-charging system may implement two methods: one is to re-determine the target charging object to receive the electric energy transmitted by the first electric device, and the other is to determine that a discharge termination event has occurred and generate a discharge termination message for the integrated storage-charging system. These two methods can be determined by system default configuration or by user selection in the system's human-computer interface.

[0126] In some embodiments, the target charging object may be single or multiple. When the target charging object is single, the charging control device determines that the target charging object has completed charging when it determines that the target charging object meets the power transmission stop condition; when the target charging object is multiple, the charging control device judges the power transmission stop condition for each target charging object, and determines that the target charging object has completed charging when all target charging objects meet the power transmission stop condition.

[0127] Step S305: when it is determined that the charging object to be charged exists, the charging object to be charged is determined as a target charging object.

[0128] In the above embodiment, when the current target charging object has completed charging, the target charging object is re-determined to charge the newly determined target charging object. This method can charge the newly determined target charging object while the first electric device still supports the transmission of electric energy. This not only avoids the first electric device and the storage-charging integrated system from entering the charging configuration stage again, but also reduces the number of charging objects with charging needs in the hybrid charging system.

[0129] In some embodiments, the above step S302, determining the target charging object to receive the electric energy delivered by the first electric device based on the state parameter, may include steps S3021 to S3024:

[0130] Step S3021: when the signal indicating whether the second electric device is charging indicates charging, determining the second electric device as a target charging object;

[0131] Step S3022: determining the supplementary energy storage system as a target charging object when the state of charge value of the supplementary energy storage system is less than or equal to a first charge threshold and / or the residual energy state value of the supplementary energy storage system is less than or equal to a first residual energy state threshold;

[0132] In some embodiments, when the state of charge value of the supplementary energy storage system is less than or equal to a first charge threshold, and the remaining energy state value of the supplementary energy storage system is greater than the first remaining energy state threshold, the supplementary energy storage system is determined to be a target charging object; when the remaining energy state value of the supplementary energy storage system is less than or equal to the first remaining energy state threshold, and the state of charge value of the supplementary energy storage system is greater than the first charge threshold, the supplementary energy storage system is determined to be a target charging object; when the remaining energy state value of the supplementary energy storage system is less than or equal to the first remaining energy state threshold, and the state of charge value of the supplementary energy storage system is less than or equal to the first charge threshold, the supplementary energy storage system is determined to be a target charging object.

[0133] Step S3023: determining that the energy storage device is a target charging object when the state of charge value of the energy storage device is less than or equal to a second charge threshold and / or the remaining energy state value of the energy storage device is less than or equal to a second remaining energy state threshold;

[0134] In some embodiments, when the state of charge value of the energy storage device is less than or equal to a second charge threshold, and the remaining energy state value of the energy storage device is greater than the second remaining energy state threshold, the energy storage device is determined to be a target charging object; when the remaining energy state value of the energy storage device is less than or equal to the second remaining energy state threshold, and the state of charge value of the energy storage device is greater than the second charge threshold, the energy storage device is determined to be a target charging object; when the state of charge value of the energy storage device is less than or equal to the second charge threshold, and the remaining energy state value of the energy storage device is less than or equal to the second remaining energy state threshold, the energy storage device is determined to be a target charging object.

[0135] Step S3024: when the current time period falls within the power transmission time period, determining the power grid as a target charging object.

[0136] In the above embodiment, a method is provided for the second electric device, the energy storage supplementation system, the power grid, and the energy storage device to determine whether there is a charging demand. Through this method, a target charging object with a charging demand can be obtained, so that after receiving the electric energy transmitted by the first electric device, the charging device can transmit the electric energy to the target charging object, thereby charging the target charging object.

[0137] The embodiment of the present application provides a charging control method, which is applied to a storage-charging integrated system, such as Figure 4 As shown, the method may include step S401 and step S403:

[0138] Step S401: In response to the first electric device being in a charging mode, controlling the charging device to determine charging requirement information of the first electric device;

[0139] Here, the charging mode may be determined based on a received charging signal of the first electric device, wherein the charging signal may refer to a related electrical signal that triggers the first electric device to be charged.

[0140] The charging demand information can be configured by the user on the display interface of a terminal such as a mobile phone, a hybrid charging system, etc., where the configuration items may include the expected charging mode, expected charging time, expected charging power, expected charging cost, expected number of charging times, etc.

[0141] It should be noted that the configuration items included in the above-mentioned charging demand information can be selected by the user according to his or her own charging needs, where a single configuration item can be selected or multiple configuration items can be selected. When the number of configurations is multiple, for example, the combination of configuration items can be a combination of the expected charging mode and the expected charging power, and the combination of configuration items can also be a combination of the expected charging cost, the expected charging time and the expected charging power. No specific restrictions are made in this application.

[0142] Step S402: determining a target charging mode for the storage-charging integrated system to charge the first electric device based on the charging demand information, wherein the target charging mode corresponds to a target charging parameter;

[0143] Here, the target charging mode generally refers to the charging method used by the integrated storage-charging system when charging the first electric device, which affects charging time, battery life, charging efficiency, and other aspects. Charging parameters are charging requirements of the first electric device and may include charging power, charging rate, and charging method. The charging method must be combined with charging power or charging rate.

[0144] Here, the charging rate can be xC, where x represents a value greater than 1, such as an integer or a decimal. For example, when x is 5, 4.5, 4, 3, 2, or 1, the charging rates are 5C, 4.5C, 4C, 3C, 2C, or 1C, respectively. For another example, x can be 0.5 or 0.25, etc. Generally speaking, there is a corresponding relationship between the charging rate and the charging mode. As an embodiment, when x is greater than or equal to 2, the corresponding charging mode can be considered as a supercharging mode. When x is greater than or equal to 1 and less than 2, the corresponding charging mode can be considered as a fast charging mode. When x is less than 1, the corresponding charging mode can be considered as a slow charging mode.

[0145] In some embodiments, the charging rate corresponding to the first charging mode may be 2C, 3C, 4C, 5C, or 5.5C. The charging rate corresponding to the second charging mode may be 1C, 1.5C, 1.75C, or 1.25C, etc. The charging rate corresponding to the third charging mode may be 0.1C, 0.5C, 0.75C, or 0.8C, etc.

[0146] The target charging mode is one of at least one charging mode supported by the integrated storage-charging system. In some embodiments, some integrated storage-charging systems support only one charging mode, namely, the first charging mode; in this case, the target charging mode is the first charging mode. During implementation, the first charging mode may be a supercharging mode, i.e., the first charging parameter corresponding to the supercharging mode indicates a charging power greater than 300 kilowatts, such as, for example, 300 kilowatts, 450 kilowatts, or 400 kilowatts.

[0147] Some integrated storage and charging systems can support more than two charging modes. The difference between the charging modes is that the charging parameters are different, and the charging parameters include at least the charging power. In some embodiments, some integrated storage and charging systems can support two charging modes, that is, the charging mode of the integrated storage and charging system includes a first charging mode and a second charging mode; then the target charging mode can be the first charging mode or the second charging mode. The charging power indicated by the first charging parameter in the first charging mode is greater than the charging power indicated by the second charging parameter in the second charging mode. During implementation, the first charging mode can be a supercharging mode, and the second charging mode can be a fast charging mode or a slow charging mode. When the second charging mode is a fast charging mode, the second charging parameter corresponding to the fast charging mode indicates a charging power greater than 150 kilowatts and less than 300 kilowatts, for example, the charging power indicated by the second charging parameter is 160 kilowatts, another example is the charging power indicated by the second charging parameter is 200 kilowatts, another example is the charging power indicated by the second charging parameter is 260 kilowatts, and so on.

[0148] When the second charging mode is the slow charging mode, the second charging parameter corresponding to the slow charging mode, the charging power indicated by the second charging parameter is greater than 10 kilowatts and less than 300 kilowatts. For example, the charging power indicated by the second charging parameter is 60 kilowatts, and another example is that the charging power indicated by the second charging parameter is 200 kilowatts, and another example is that the charging power indicated by the second charging parameter is 260 kilowatts, and so on.

[0149] In some embodiments, some storage-and-charging integrated systems can support three charging modes, that is, the charging mode of the storage-and-charging integrated system includes a third charging mode in addition to the first charging mode and the second charging mode mentioned above, then the target charging mode can be one of the first charging mode, the second charging mode, or the third charging mode. The charging power indicated by the third charging parameter in the third charging mode is less than the charging power indicated by the second charging parameter in the second charging mode. During implementation, the first charging mode can be a supercharging mode, the second charging mode can be a fast charging mode, and the third charging mode can be a slow charging mode. When the third charging mode is a slow charging mode, the third charging parameter corresponding to the slow charging mode, the charging power indicated by the third charging parameter is greater than 10 kilowatts and less than 150 kilowatts, for example, the charging power indicated by the third charging parameter is greater than 60 kilowatts, and another example is that the charging power indicated by the third charging parameter is 90 kilowatts, and another example is that the charging power indicated by the third charging parameter is 120 kilowatts, and so on.

[0150] Of course, the integrated storage and charging system can also support four or more charging modes. Regarding the relationship between the charging mode of the integrated storage and charging system and the target charging mode, technicians in this field can make corresponding settings according to actual needs, which will not be repeated here.

[0151] Step S403: charging the first electric device based on the target charging parameter corresponding to the target charging mode;

[0152] Wherein, when the target charging mode includes the first charging mode, the target charging parameter corresponding to the first charging mode includes a first charging parameter, and the charging power indicated by the first charging parameter is greater than 300 kilowatts.

[0153] In some embodiments, the target charging mode of the storage-charging system can be one of a first charging mode, a second charging mode, and a third charging mode, wherein the charging power indicated by the first charging parameter in the first charging mode is greater than the charging power indicated by the second charging parameter in the second charging mode, and the charging power indicated by the third charging parameter in the third charging mode is less than the charging power indicated by the second charging parameter in the second charging mode. For example, the charging power indicated by the first charging parameter in the first charging mode is greater than 300 kilowatts, and the charging power indicated by the second charging parameter in the second charging mode is less than or equal to 300 kilowatts.

[0154] In some embodiments, when the target charging mode is the first charging mode and the energy storage device can charge the first electric device with the first charging parameter, the first electric device is charged based on the first charging parameter.

[0155] In some embodiments, when the target charging mode is the second charging mode and the energy storage device can charge the first electric device with the second charging parameter, the first electric device is charged based on the second charging parameter.

[0156] In some embodiments, the target charging mode also includes a third charging mode. When the target charging mode is the third charging mode, the implementation of the above step S403 may be: determining a third charging parameter corresponding to the third charging mode; and charging the first electric device with the third charging parameter.

[0157] In an embodiment of the present application, a target charging mode for charging the first electric device is determined based on the charging requirement information of the first electric device, and then the first electric device is charged based on the target charging parameters corresponding to the target charging mode. This method can determine the most suitable charging mode for charging the first electric device based on the charging requirement information of the first electric device when there are multiple charging modes.

[0158] In some embodiments, the input power of the energy storage device is less than 150 kilowatts; in the first charging mode, the output power of the energy storage device is greater than or equal to 300 kilowatts.

[0159] In the above embodiments, the input power and output power ranges of the energy storage device are provided, and the normal operation of the energy storage device is ensured by controlling the input power or output power of the energy storage device to be within the corresponding range.

[0160] The above-mentioned charging control method is described below in conjunction with an embodiment. For ease of understanding, the V2G charging control method is described below using an electric vehicle as a specific first electric device. However, it is worth noting that this embodiment is only for better illustrating the present application and does not constitute an improper limitation on the present application.

[0161] Here, we first explain the architecture diagram of the V2G charging control method. Figure 5 As shown, the architecture diagram includes a cloud service 12, a monitoring system 13, charging control devices 214 in N storage-charging integrated machine systems, and a wireless communication module 211 corresponding to the charging control device, wherein the cloud service 12 and the monitoring platform 13 can exchange information, and the cloud service 12 exchanges information with the charging control device 214 in the storage-charging integrated machine system through the wireless communication module 211 in the storage-charging integrated machine system.

[0162] Through the cloud service 12, monitoring platform 13, and charging control device 214 in the integrated storage and charging system in the above-mentioned architecture diagram, intelligent monitoring and control of the V2G charging process can be achieved. The strategy for determining the operating mode during the V2G charging process can be implemented by the charging control device 214 in the integrated storage and charging system. When multiple integrated storage and charging systems form an integrated system, the charging control device of one of the integrated storage and charging systems is selected as the primary charging control device to implement the control strategy. During implementation, based on the signal sent by the wireless communication module in the multiple integrated storage and charging systems, the charging control device in the integrated storage and charging system that first sends the signal can be determined as the primary charging control device.

[0163] The embodiment of the present application provides a V2G charging control method, and describes a method for determining a working mode in the V2G stage. Figure 6 As shown, it includes steps S601 to S615:

[0164] Step S601: Standby, plug in the AC charging gun or the storage-charging integrated system;

[0165] Step S602: Whether V2G mode is received;

[0166] Here, if the answer is no (N), the process proceeds to step S603 to enter the charging mode and charge the electric vehicle according to the charging process matching different charging modes; if the answer is yes (Y), the process proceeds to step S605 to determine whether there are other electric vehicles charging in the hybrid charging system.

[0167] It should be noted that the storage and charging integrated system determines whether the electric vehicle is in V2G mode by receiving the battery parameter message of the electric vehicle through the charging device.

[0168] Step S603: Entering the charging mode, charging the electric vehicle according to the charging process matching different charging modes;

[0169] Step S604: End charging;

[0170] Step S605: Is there an electric car plugged in for charging?

[0171] Here, it is determined whether there is an electric vehicle that has a charging demand among the electric vehicles connected to the hybrid charging system.

[0172] It should be noted that since the hybrid charging system includes multiple charging guns, multiple electric vehicles can be connected, among which multiple connected electric vehicles can perform V2G at the same time, multiple connected electric vehicles can be charged at the same time, or some of the multiple connected electric vehicles can perform V2G while other parts can be charged.

[0173] If the answer is no (N), the process proceeds to step S608 to determine whether the battery of the energy storage supplement system meets the SOC £q or SOE £p conditions. If the answer is yes (Y), the process proceeds to step S606 to enter working mode 1, where the V2G electric vehicle charges other plugged-in electric vehicles through the DC bus.

[0174] Step S606: Working mode 1, the V2G electric vehicle charges other plugged-in electric vehicles through the DC bus;

[0175] Step S607: whether the stop condition of the working mode 1 or the cut-off condition of the battery of the electric vehicle is reached;

[0176] Here, the stop conditions of working mode 1 may include electric vehicle full charge cut-off and BMS failure, etc.; the cut-off conditions of the electric vehicle battery may include battery overvoltage cut-off, overtemperature cut-off, overcurrent cut-off and insulation abnormality cut-off, etc.

[0177] If the answer is no (N), the process proceeds to step S606 and enters working mode 1, where the V2G electric vehicle charges other plugged-in electric vehicles through the DC bus; if the answer is yes (Y), the process ends.

[0178] Step S608: Determine whether the battery of the energy storage supplement system meets the SOC £q or SOE £p conditions;

[0179] Here, it is to determine whether there is a need to charge the energy storage supplement system.

[0180] If the answer is no (N), the process proceeds to step S611 to determine whether the battery of the energy storage device meets the SOC £m or SOE £n conditions. If the answer is yes (Y), the process proceeds to step S609 to enter working mode 2, where the V2G electric vehicle charges the energy storage supplement system separately through the DC bus.

[0181] Step S609: Working mode 2, the V2G electric vehicle charges the energy storage supplement system separately through the DC bus;

[0182] Step S610: Whether the stop condition of the working mode 2 or the cut-off condition of the battery of the energy storage supplement system is met;

[0183] Here, the stop conditions of working mode 2 may include full charge cut-off of the energy storage supplement system, alarm cut-off, etc.; the cut-off conditions of the battery of the energy storage supplement system may include battery overvoltage cut-off, overtemperature cut-off, overcurrent cut-off, and insulation abnormality cut-off, etc.

[0184] If the answer is no (N), the process proceeds to step S609 and enters working mode 2, where the V2G electric vehicle charges the energy storage supplement system separately through the DC bus; if the answer is yes (Y), the process ends.

[0185] Step S611: Determine whether the battery of the energy storage device meets the conditions of SOC £m or SOE £n;

[0186] Here, it is to determine whether there is a need to charge the energy storage device.

[0187] If the answer is no (N), the process proceeds to step S614, operating mode 4, where electric energy is delivered to the grid according to the schedule applied to the grid; if the answer is yes (Y), the process proceeds to step S612, operating mode 3, where the V2G electric vehicle charges the energy storage device separately through the DC bus.

[0188] Step S612: Working mode 3, the V2G electric vehicle charges the energy storage device separately through the DC bus;

[0189] Step S613: whether the stop condition of the working mode 3 or the cut-off condition of the battery of the energy storage device is met;

[0190] Here, the stop conditions of working mode 3 may include full charge cutoff of the energy storage device, alarm cutoff, etc.; the cutoff conditions of the battery of the energy storage device may include battery overvoltage cutoff, overtemperature cutoff, overcurrent cutoff, and insulation abnormality cutoff, etc.

[0191] If the answer is no (N), the process proceeds to step S612 and enters working mode 3, where the V2G electric vehicle charges the energy storage device separately through the DC bus; if the answer is yes (Y), the process ends.

[0192] Step S614: Working mode 4, transmitting electric energy to the grid according to the schedule applied for with the grid;

[0193] Before transmitting electricity to the grid, a sign-in agreement with the grid is required to support the transmission. This agreement can include a schedule that specifies the time periods for transmission and the price of electricity. The system then transmits electricity according to the schedule obtained from the grid. This schedule resolves the issue of energy transmission limitations between the grid and other energy storage systems, electric vehicles, and other systems, allowing users to perform V2G functions at any time without time constraints.

[0194] Step S615: Is the schedule completed?

[0195] Here, the judgment is made based on the time period for supplying electric energy to the grid in the schedule. If the current time is within the time period in the schedule, the supply of electric energy to the grid is supported. If the current time is not in the schedule, it is determined that the schedule has been completed and the supply of electric energy to the grid is stopped.

[0196] If the answer is no (N), the process proceeds to step S614 to transmit electric energy to the grid according to the schedule applied for with the grid; if the answer is yes (Y), the process ends.

[0197] Based on the aforementioned embodiments, an embodiment of the present application provides a schematic diagram of the composition structure of a charging control device, which includes the modules included therein and the units included in each module. It can be implemented by a controller in a charging control device (such as a storage-charging integrated system or an electric vehicle); of course, it can also be implemented by a specific logic circuit; in the implementation process, the controller can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP) or a field programmable gate array (FPGA), etc.

[0198] A schematic diagram of the composition structure of a charging control device provided in an embodiment of the present application is applied to a storage-charging integrated system, wherein the storage-charging integrated system includes a charging device and an energy storage device, one end of the energy storage device is connected to a DC bus, and the other end of the energy storage device is connected to the charging device, and the energy storage device is used to charge the electric device through the charging device, or output the electric energy in the energy storage device to the DC bus; the charging device includes a bidirectional DC / DC device, one end of the charging device is connected to the charging gun, and the other end is connected to the DC bus; the charging device is used to transmit the electric energy in the electric device to the energy storage device and / or the power grid through the bidirectional DC / DC device, or transmit the electric energy of the power grid and / or the electric energy of the energy storage device to the electric device, such as Figure 7 As shown, the charging control device 700 includes:

[0199] An acquisition module 701 is configured to acquire, in response to the first electric device being in a discharge mode, state parameters of a charging object; the charging object comprising at least two of the following: an energy storage supplementation system, a power grid, a second electric device, and an energy storage device; the state parameters comprising at least one or more of the following: a signal indicating whether the second electric device is charging, a power transmission time period, a state of charge, and a remaining energy state;

[0200] A first determining module 702 is configured to determine, based on the state parameter, a target charging object to receive the electric energy transmitted by the first electric device; the target charging object is one or more of the charging objects;

[0201] The receiving module 703 is configured to control the charging device to receive the electric energy transmitted by the first electric device so as to transmit the electric energy to the target charging object when the first electric device is in the process of discharging.

[0202] In some embodiments, the apparatus comprises:

[0203] a second determining module, configured to determine a transmission ratio of electric energy to be transmitted to each target charging object when the target charging object is a plurality of the charging objects;

[0204] The receiving module includes:

[0205] The first receiving unit is used to control the electric energy received by the charging device from the first electric device to be transmitted to each target charging object at a transmission ratio of each target charging object when the first electric device is in the process of discharging, so as to charge each target charging object.

[0206] In some embodiments, the apparatus comprises:

[0207] a third determining module, configured to determine, when the target charging object is a plurality of the charging objects, a priority order of transmitting electric energy to the plurality of target charging objects based on a transmission rule in the integrated storage-charging system;

[0208] The receiving module includes:

[0209] a second receiving unit, configured to control the charging device to receive the electric energy transmitted by the first electric device when the first electric device is in the process of discharging, so as to transmit the electric energy to the first target charging object having the first priority order;

[0210] a first determining unit, configured to determine whether charging of the first target charging object is completed based on a power transmission stop condition of the first target charging object;

[0211] The third receiving unit is used to control the charging device to receive the electric energy delivered by the first electric device when the first target charging object is completely charged, so as to deliver the electric energy to the second target charging object with the second priority order.

[0212] In some embodiments, the apparatus comprises:

[0213] a fourth determining module, configured to determine whether charging of the target charging object is completed based on a power transmission stopping condition of the target charging object;

[0214] a fifth determining module, configured to determine whether there is a charging object to be charged based on state parameters of charging objects other than the target charging object when charging of the target charging object is completed;

[0215] The sixth determining module is configured to, when it is determined that the charging object to be charged exists, determine the charging object to be charged as a target charging object.

[0216] In some embodiments, the first determining module includes:

[0217] a second determining unit, configured to determine that the second electric device is a target charging object when the signal indicating whether the second electric device is charging indicates that the second electric device is charging;

[0218] a third determining unit, configured to determine that the supplementary energy storage system is a target charging object if the state of charge value of the supplementary energy storage system is less than or equal to a first charge threshold and / or the residual energy state value of the supplementary energy storage system is less than or equal to a first residual energy state threshold;

[0219] a fourth determining unit, configured to determine that the energy storage device is a target charging object when the state of charge value of the energy storage device is less than or equal to a second charge threshold and / or the remaining energy state value of the energy storage device is less than or equal to a second remaining energy state threshold;

[0220] A fifth determining unit is configured to determine the power grid as a target charging object when the current time period falls within the power transmission time period.

[0221] In some embodiments, the apparatus comprises:

[0222] a seventh determining module, configured to control the charging device to determine charging requirement information of the first electric device in response to the first electric device being in a charging mode;

[0223] an eighth determining module, configured to determine, based on the charging demand information, a target charging mode for the integrated storage-charging system to charge the first electric device, wherein the target charging mode corresponds to a target charging parameter;

[0224] a charging module, configured to charge the first electric device based on a target charging parameter corresponding to the target charging mode;

[0225] Wherein, when the target charging mode includes the first charging mode, the target charging parameter corresponding to the first charging mode includes a first charging parameter, and the charging power indicated by the first charging parameter is greater than 300 kilowatts.

[0226] In some embodiments, the input power of the energy storage device is less than 150 kilowatts; in the first charging mode, the output power of the energy storage device is greater than or equal to 300 kilowatts.

[0227] The description of the above device embodiment is similar to the description of the above method embodiment and has similar beneficial effects as the method embodiment. In some embodiments, the functions or modules included in the device provided by the embodiments of the present disclosure can be used to perform the methods described in the above method embodiments. For technical details not disclosed in the device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0228] It should be noted that in the embodiments of the present application, if the above-mentioned method is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present application, or the part that contributes to the relevant technology, can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions for enabling a charging control device (which can be a storage-charging integrated system or an electric vehicle, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk. In this way, the embodiments of the present application are not limited to any specific hardware, software or firmware, or any combination of hardware, software and firmware.

[0229] The embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a controller, implements some or all of the steps in the above method. The computer-readable storage medium may be transient or non-transient.

[0230] An embodiment of the present application provides a computer program, including computer-readable code. When the computer-readable code runs in a charging control device, a controller in the charging control device executes some or all of the steps for implementing the above method.

[0231] An embodiment of the present application provides a computer program product, including a computer program or instructions, which implement the steps in the above method when executed by a controller.

[0232] The computer program product may be implemented in hardware, software, or a combination thereof. In some embodiments, the computer program product is implemented as a computer storage medium. In other embodiments, the computer program product is implemented as a software product, such as a software development kit (SDK).

[0233] It should be noted that the descriptions of the various embodiments above tend to emphasize the differences between the various embodiments, and their similarities or similarities can be referenced to each other. The descriptions of the above device, storage medium, computer program, and computer program product embodiments are similar to the descriptions of the above method embodiments and have similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the device, storage medium, computer program, and computer program product of this application, please refer to the description of the method embodiments of this application for understanding.

[0234] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned steps / processes does not mean the order of execution, and the execution order of each step / process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments.

[0235] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0236] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0237] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment.

[0238] In addition, all functional units in the embodiments of the present application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the above-mentioned integrated units can be implemented in the form of hardware or in the form of hardware plus software functional units.

[0239] Those skilled in the art will understand that all or part of the steps of the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, and other media that can store program codes.

[0240] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the relevant technology, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a charging control device to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks or optical disks.

[0241] The above is only an implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this application, which should be covered by the scope of protection of the present application.

Claims

1. A charging control method, characterized in that: Applicable to a storage-charging integrated system, the storage-charging integrated system includes a charging device and an energy storage device, One end of the energy storage device is connected to the DC bus, and the other end of the energy storage device is connected to the charging device. The energy storage device is used to charge the electric device through the charging device, or output the electric energy in the energy storage device to the DC bus; The charging device comprises a bidirectional DC / DC device, one end of which is connected to the charging gun, and the other end of which is connected to the DC bus; the charging device is used to transmit the electric energy in the electric device to the energy storage device and / or the power grid through the bidirectional DC / DC device, or to transmit the electric energy of the power grid and / or the electric energy of the energy storage device to the electric device; The method comprises: In response to the first electric device being in a discharge mode, a state parameter of a charging object is obtained; the charging object includes at least two of the following: an energy storage supplement system, a power grid, a second electric device outside the storage-charging integrated system, and an energy storage device; the energy storage supplement system includes at least two battery packs for battery cascade utilization; the state parameter includes at least one or more of the following parameters: a signal of whether the second electric device is charged, a power transmission time period, a state of charge, and a remaining energy state; Based on the state parameter, determining a target charging object to receive the electric energy delivered by the first electric device; the target charging object is one or more of the charging objects; When the first electric device is in the process of discharging, controlling the charging device to receive the electric energy transmitted by the first electric device, so as to transmit the electric energy to the target charging object; In a case where the target charging object is a plurality of the charging objects, determining a transmission ratio of electric energy to each target charging object; The controlling the charging device to receive the electric energy transmitted by the first electric device to transmit the electric energy to the target charging object while the first electric device is in the process of discharging includes: When the first electric device is in the process of discharging, the electric energy transmitted by the first electric device received by the charging device is controlled to be transmitted to each of the target charging objects at the transmission ratio of each of the target charging objects at the same time, so as to charge each of the target charging objects; The step of determining, based on the state parameter, a target charging object that receives the electric energy delivered by the first electric device comprises: When the state of charge values ​​of the at least two second-life battery packs are less than or equal to a first charge threshold, and / or the remaining energy state values ​​of the at least two second-life battery packs are less than or equal to a first remaining energy state threshold, determining the energy storage supplement system as a target charging object; The method further comprises: In the case where the target charging object is a plurality of the charging objects, determining a priority order of transmitting electric energy to the plurality of target charging objects based on a transmission rule; wherein the transmission rule is used to indicate that the priority of transmitting electric energy to the second electric device, the energy storage supplementation system, the energy storage device, and the power grid is sequentially decreased; The controlling the charging device to receive the electric energy transmitted by the first electric device to transmit the electric energy to the target charging object while the first electric device is in the process of discharging includes: When the first electric device is in the process of discharging, the charging device is controlled to receive the electric energy transmitted by the first electric device, so as to transmit the electric energy to the plurality of target charging objects in the priority order.

2. The method according to claim 1, characterized in that: The method of controlling the charging device to receive the electric energy delivered by the first electric device to deliver the electric energy to the plurality of target charging objects in the priority order while the first electric device is in the process of discharging comprises: When the first electric device is in the process of discharging, controlling the charging device to receive the electric energy delivered by the first electric device, so as to deliver the electric energy to the first target charging object whose priority order is the first priority order; Determining whether the first target charging object has completed charging based on a condition for stopping power transmission of the first target charging object; When the first target charging object is completely charged, the charging device is controlled to receive the electric energy transmitted by the first electric device, so as to transmit the electric energy to the second target charging object having the second priority order.

3. The method according to claim 1 or 2, characterized in that: The method comprises: Determining whether the target charging object has completed charging based on the stopping power transmission condition of the target charging object; In a case where the target charging object has completed charging, determining whether there is a charging object to be charged based on state parameters of charging objects other than the target charging object; In a case where it is determined that the charging object to be charged exists, the charging object to be charged is determined as a target charging object.

4. The method according to claim 1 or 2, characterized in that: Determining a target charging object that receives the electric energy delivered by the first electric device based on the state parameter includes: When the signal indicating whether the second electric device is being charged indicates that the second electric device is being charged, determining that the second electric device is a target charging object; When the state of charge value of the energy storage device is less than or equal to a second charge threshold, and / or the remaining energy state value of the energy storage device is less than or equal to a second remaining energy state threshold, determining that the energy storage device is a target charging object; When the current time period falls within the power transmission time period, the power grid is determined as a target charging object.

5. The method according to claim 1 or 2, characterized in that: The method comprises: In response to the first electric device being in a charging mode, controlling the charging device to determine charging requirement information of the first electric device; Based on the charging demand information, determining a target charging mode for the storage-charging integrated system to charge the first electric device, wherein the target charging mode corresponds to a target charging parameter; charging the first electric device based on the target charging parameter corresponding to the target charging mode; Wherein, in a case where the target charging mode includes a first charging mode, the target charging parameter corresponding to the first charging mode includes a first charging parameter, and a charging power indicated by the first charging parameter is greater than 300 kilowatts.

6. The method according to claim 5, characterized in that: The input power of the energy storage device is less than 150 kilowatts; in the first charging mode, the output power of the energy storage device is greater than or equal to 300 kilowatts.

7. A storage and charging system, characterized in that: It includes an energy storage device, a charging device and a charging control device; wherein, One end of the energy storage device is connected to the DC bus to output the electric energy in the energy storage device to the power grid; the other end of the energy storage device is connected to the charging device to charge the electric device through the charging device and the charging gun; the energy storage device is used to charge the electric device through the charging device, or output the electric energy in the energy storage device to the DC bus; The charging device comprises a bidirectional DC / DC device, one end of which is connected to the charging gun, and the other end of which is connected to the DC bus; The charging device is used to transmit the electric energy in the electric device to the energy storage device and / or the power grid through the bidirectional DC / DC device, or to transmit the electric energy of the power grid and / or the electric energy of the energy storage device to the electric device; The charging control device is used to obtain the state parameters of the charging object in response to the first electric device being in the discharge mode; the charging object includes the following: an energy storage supplement system, a power grid, a second electric device outside the storage-charging integrated system, and an energy storage device; the energy storage supplement system includes at least two battery packs for battery cascade utilization; the state parameters include at least one or more of the following parameters: a signal of whether the second electric device is charged, a power transmission time period, a state of charge, and a remaining energy state; Based on the state parameter, determining a target charging object to receive the electric energy delivered by the first electric device; the target charging object is one or more of the charging objects; When the first electric device is in the process of discharging, controlling the charging device to receive the electric energy transmitted by the first electric device, so as to transmit the electric energy to the target charging object; The charging control device is further configured to determine a transmission ratio of electric energy to be transmitted to each target charging object when the target charging object is a plurality of the charging objects; The charging device is controlled to receive the electric energy transmitted by the first electric device during the discharge process, so as to transmit the electric energy to the target charging object. The charging control device is also used to control the electric energy transmitted by the first electric device received by the charging device to be transmitted to each target charging object at the transmission ratio of each target charging object during the discharge process of the first electric device, so as to simultaneously transmit the electric energy to each target charging object, so as to charge each target charging object; The step of determining, based on the state parameter, a target charging object that receives the electric energy delivered by the first electric device comprises: When the state of charge values ​​of the at least two second-life battery packs are less than or equal to a first charge threshold, and / or the remaining energy state values ​​of the at least two second-life battery packs are less than or equal to a first remaining energy state threshold, determining the energy storage supplement system as a target charging object; The method further comprises: In the case where the target charging object is a plurality of the charging objects, determining a priority order of transmitting electric energy to the plurality of target charging objects based on a transmission rule; wherein the transmission rule is used to indicate that the priority of transmitting electric energy to the second electric device, the energy storage supplementation system, the energy storage device, and the power grid is sequentially decreased; The controlling the charging device to receive the electric energy transmitted by the first electric device to transmit the electric energy to the target charging object while the first electric device is in the process of discharging includes: When the first electric device is in the process of discharging, the charging device is controlled to receive the electric energy transmitted by the first electric device, so as to transmit the electric energy to the plurality of target charging objects in the priority order.

8. The integrated storage and charging system according to claim 7, characterized in that: The ratio between the rated energy of the energy storage device and the rated power of the energy storage device is less than or equal to 1:

4.

9. The integrated storage and charging system according to claim 7 or 8, characterized in that: The energy storage device and / or the charging device meets one or more of the following conditions: The ratio between the rated energy of the energy storage device and the maximum discharge power of the energy storage device is not greater than 1:3; The energy density of the energy storage device is greater than or equal to 380 watt-hours / liter; The ratio between the rated energy of the energy storage device and the maximum charging power of the charging device is less than 1:

4.

10. A charging control device, characterized in that: Applicable to a storage-charging integrated system, the storage-charging integrated system includes a charging device and an energy storage device, One end of the energy storage device is connected to the DC bus, and the other end of the energy storage device is connected to the charging device. The energy storage device is used to charge the electric device through the charging device, or output the electric energy in the energy storage device to the DC bus; The charging device comprises a bidirectional DC / DC device, one end of which is connected to the charging gun, and the other end of which is connected to the DC bus; the charging device is used to transmit the electric energy in the electric device to the energy storage device and / or the power grid through the bidirectional DC / DC device, or to transmit the electric energy of the power grid and / or the electric energy of the energy storage device to the electric device; The device comprises: An acquisition module is used to acquire state parameters of a charging object in response to the first electric device being in a discharge mode; the charging object includes at least two of the following: an energy storage supplement system, a power grid, a second electric device outside the storage-charging integrated system, and an energy storage device; the energy storage supplement system includes at least two battery packs for battery cascade utilization; the state parameters include at least one or more of the following parameters: a signal of whether the second electric device is being charged, a power transmission time period, a state of charge, and a remaining energy state; A first determining module is used to determine, based on the state parameter, a target charging object that receives the electric energy delivered by the first electric device; the target charging object is one or more of the charging objects; a receiving module, configured to control a charging device to receive electric energy transmitted by the first electric device so as to transmit electric energy to the target charging object when the first electric device is in the process of discharging; a second determining module, configured to determine a transmission ratio of electric energy to be transmitted to each target charging object when the target charging object is a plurality of the charging objects; The receiving module comprises: a first control unit, configured to control the electric energy received by the charging device and delivered by the first electric device to be delivered to each of the target charging objects at a delivery ratio of each of the target charging objects, so as to charge each of the target charging objects; The first determining module includes: A first determining unit is used to determine that the energy storage supplement system is a target charging object when the state of charge values ​​of the at least two battery ladder utilization battery packs are less than or equal to a first charge threshold value and / or the remaining energy state values ​​of the at least two battery ladder utilization battery packs are less than or equal to a first remaining energy state threshold value; The device comprises: A third determination module is used to determine the priority order of transmitting electric energy to the multiple target charging objects based on a transmission rule when the target charging object is multiple of the charging objects; wherein the transmission rule is used to indicate that the priority of transmitting electric energy to the second electric device, the energy storage supplementation system, the energy storage device and the power grid is reduced in sequence; The receiving module comprises: The second control unit is used to control the charging device to receive the electric energy delivered by the first electric device when the first electric device is in the process of discharging, so as to deliver the electric energy to the multiple target charging objects in the priority order.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a controller, the steps in the method according to any one of claims 1 to 6 are implemented.

12. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed by a controller, the steps in the method according to any one of claims 1 to 6 are implemented.

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