Energy management system and method, electronic equipment and storage medium

Abstract

The invention relates to the technical field of energy management, and discloses an energy management system and method, electronic equipment and a storage medium, the energy management system comprises a power battery, a vehicle-mounted inverter, a contactor module and a conversion control module, the vehicle-mounted inverter is connected with the power battery and used for converting direct current output by the power battery into alternating current, and the contactor module is connected with the conversion control module; the contactor module is respectively connected with the power battery and the vehicle-mounted inverter and is used for controlling the connection state of the contactor module according to the control instruction sent by the conversion control module, so that the energy management system performs energy management based on different working modes, and the energy management comprises energy transfer and energy conversion of direct current and alternating current; by means of the energy management system, energy management of the vehicle is more efficient, additional alternating current charging and discharging interfaces and related hardware are omitted, and the manufacturing cost of the vehicle is reduced.

Description

Technical Field

[0001] The present application relates to the field of energy management technology, and in particular to an energy management system, method, electronic device and storage medium. Background Art

[0002] With the continuous development of new energy vehicle technology, the standardization and diversity of vehicle charging and discharging interfaces have become important considerations in vehicle design. Currently, mainstream electric vehicles are generally equipped with AC and DC charging and discharging interfaces to meet the needs of different charging and discharging scenarios. As a key component in power conversion, the on-board inverter is primarily responsible for converting DC power to AC power to support internal vehicle equipment and connect external AC loads.

[0003] However, the application of on-board inverters and the coordinated working mechanisms of charging and discharging interfaces in related technologies are still insufficient, especially in applications such as V2L (Vehicle to Load) functions and DC discharge, where significant limitations are exposed. Specifically, to meet diverse power supply needs, vehicles often need to integrate multiple charging and discharging interfaces and be equipped with corresponding conversion devices. This not only significantly increases the design complexity of the vehicle's electrical system, but also leads to increased manufacturing costs, affecting the overall economic efficiency and market competitiveness of electric vehicles. Clearly, a new energy management system is urgently needed to address at least one of these issues.

[0004] It should be noted that the above content only provides background technical information related to this application and does not necessarily constitute prior art. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the present application provides an energy management system, method, electronic device and storage medium to make vehicle energy management more efficient, eliminate additional AC charging and discharging interfaces and related hardware, and reduce vehicle manufacturing costs.

[0006] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0007] According to one aspect of an embodiment of the present application, an energy management system is provided, which includes a power battery, an on-board inverter, a contactor module and a conversion control module; the on-board inverter is connected to the power battery and is used to convert the direct current output by the power battery into alternating current; the contactor module is connected to the power battery and the on-board inverter, and is used to control the connection state of the contactor module according to the control instructions sent by the conversion control module, so that the energy management system performs energy management based on different working modes, and the energy management includes energy transfer and energy conversion between direct current and alternating current.

[0008] In one embodiment of the present application, based on the aforementioned solution, the conversion control module generates a control instruction according to the received working mode and interface connection request, and sends the control instruction to the contactor module.

[0009] In one embodiment of the present application, based on the aforementioned scheme, the contactor module includes a first contactor group and a second contactor group; the first contactor group is connected to the power battery and the vehicle charge and discharge interface, and is used to control the connection status between the power battery and the vehicle charge and discharge interface according to the control instruction; the second contactor group is connected to the vehicle-mounted inverter and the vehicle charge and discharge interface, and is used to control the connection status between the vehicle-mounted inverter and the vehicle charge and discharge interface according to the control instruction.

[0010] In one embodiment of the present application, based on the above-mentioned scheme, if the working mode received by the conversion control module is DC charging mode and the interface connection request is DC charging gun connection, the control instruction generated by the conversion control module is to close the first contactor group and disconnect the second contactor group; if the working mode received by the conversion control module is DC discharge mode and the interface connection request is DC discharge gun connection, the control instruction generated by the conversion control module is to close the first contactor group and disconnect the second contactor group; if the working mode received by the conversion control module is AC discharge mode and the interface connection request is external load connection, or the working mode received by the conversion control module is AC discharge mode and the interface connection request is external load connection and internal load connection, the control instruction generated by the conversion control module is to disconnect the first contactor group and close the second contactor group; if the working mode received by the conversion control module is inverter power supply mode and the interface connection request is internal load connection, the control instruction generated by the conversion control module is to disconnect the first contactor group and disconnect the second contactor group.

[0011] According to one aspect of an embodiment of the present application, an energy management method is provided, which is applied to an energy management system. The method includes: in response to receiving a control instruction, controlling the connection state of a contactor module based on the control instruction, so that the energy management system performs energy management based on different operating modes, and the energy management includes energy transfer and energy conversion between direct current and alternating current, wherein the contactor module is connected to a power battery and an on-board inverter, the on-board inverter is connected to the power battery, and the on-board inverter is used to convert the direct current output by the power battery into alternating current.

[0012] In one embodiment of the present application, based on the aforementioned solution, the control instruction is generated in the following manner: obtaining a working mode and an interface connection request; and generating the control instruction according to the working mode and the interface connection request.

[0013] In one embodiment of the present application, based on the aforementioned scheme, controlling the connection state of the contactor module based on the control instruction includes: controlling the connection state of the first contactor group and the second contactor group based on the control instruction, wherein the contactor module includes the first contactor group and the second contactor group, the first contactor group is connected to the power battery and the vehicle charging and discharging interface, and the second contactor group is connected to the vehicle-mounted inverter and the vehicle charging and discharging interface.

[0014] In one embodiment of the present application, based on the above-mentioned scheme, the method also includes: if the received working mode is DC charging mode and the interface connection request is DC charging gun connection, the generated control instruction is to close the first contactor group and disconnect the second contactor group; if the received working mode is DC discharge mode and the interface connection request is DC discharge gun connection, the generated control instruction is to close the first contactor group and disconnect the second contactor group; if the received working mode is AC discharge mode and the interface connection request is external load connection, or the received working mode is AC discharge mode and the interface connection request is external load connection and internal load connection, the generated control instruction is to disconnect the first contactor group and close the second contactor group; if the received working mode is inverter power supply mode and the interface connection request is internal load connection, the generated control instruction is to disconnect the first contactor group and disconnect the second contactor group.

[0015] According to one aspect of an embodiment of the present application, an electronic device is provided, comprising: one or more processors; a storage device for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the electronic device implements an energy management method as described in any one of the above embodiments.

[0016] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor of a computer, the computer is enabled to execute the energy management method as described in any one of the above embodiments.

[0017] Beneficial effects of the present application: The energy management system of the present application includes a power battery, an on-board inverter, a contactor module and a conversion control module. The on-board inverter is connected to the power battery and is used to convert the direct current output by the power battery into alternating current. The contactor module is connected to the power battery and the on-board inverter and is used to control the connection status of the contactor module according to the control instructions sent by the conversion control module, so that the energy management system performs energy management based on different working modes. Energy management includes energy transfer and energy conversion between direct current and alternating current. The above-mentioned energy management system makes the vehicle's energy management more efficient, and eliminates additional AC charging and discharging interfaces and related hardware, thereby reducing the manufacturing cost of the vehicle.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, serving to explain the principles of the present application. It is obvious that the drawings described below are merely some embodiments of the present application, and a person of ordinary skill in the art can derive other drawings based on these drawings without inventive effort. In the drawings: Figure 1 is a block diagram of an energy management system shown in an exemplary embodiment of the present application; Figure 2 is a block diagram of an energy management system shown in another exemplary embodiment of the present application; Figure 3 is a schematic diagram of a DC charging or DC discharging process according to an exemplary embodiment of the present application; Figure 4 is a schematic diagram of the AC discharge process shown in an exemplary embodiment of the present application; Figure 5 A schematic diagram of the structure of a computer system suitable for implementing an electronic device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] The following will describe the embodiments of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand the other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for the purpose of illustrating the present application and are not intended to limit the scope of protection of the present application.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. Therefore, the illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0022] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present application difficult to understand.

[0023] First of all, it should be noted that V2L (Vehicle to Load) refers to the process in which electric vehicles convert the DC power of the power battery into AC power through the on-board power system to power external electrical equipment.

[0024] V2G (Vehicle to Grid) refers to the process in which electric vehicles, when parked, feed the electrical energy of their power batteries back to the grid through bidirectional charging piles, thereby participating in the peak and frequency regulation of the grid.

[0025] A PDU (Power Distribution Unit) is a product designed to distribute power to electrical equipment. It comes in a variety of specifications with different functions, installation methods, and different socket combinations, and can provide suitable rack-mounted power distribution solutions for different power supply environments.

[0026] An on-board inverter is a convenient power converter for vehicles that converts DC power to AC power, equivalent to mains electricity, for use with common electrical appliances. New energy vehicles generally use DC battery packs as their power source, while in-vehicle electrical devices (such as laptops and induction cookers) require 220V AC power. To achieve this conversion, the vehicle uses an on-board inverter to convert DC power to AC. This inversion process utilizes pulse-width modulation (PWM) technology, using high-frequency switching devices (such as IGBTs) to control the current direction and frequency, ultimately outputting a stable 220V / 50Hz AC power supply.

[0027] Figure 1 This is a block diagram of an energy management system according to an exemplary embodiment of the present application. This device can be applied to new energy vehicles and specifically configured in a computer device such as an onboard host. This device can also be applied to other exemplary implementation environments and specifically configured in other devices. This embodiment does not limit the implementation environment to which this device is applicable.

[0028] like Figure 1 As shown, the exemplary energy management system includes at least a power battery, an on-board inverter, a contactor module and a conversion control module; the on-board inverter is connected to the power battery and is used to convert the direct current output by the power battery into alternating current; the contactor module is connected to the power battery and the on-board inverter and is used to control the connection state of the contactor module according to the control instructions sent by the conversion control module, so that the energy management system performs energy management based on different working modes, and the energy management includes energy transfer and energy conversion between direct current and alternating current.

[0029] In one embodiment of the present application, the conversion control module generates a control instruction according to the received working mode and interface connection request, and sends the control instruction to the contactor module.

[0030] In one embodiment of the present application, the contactor module includes a first contactor group and a second contactor group; the first contactor group is connected to the power battery and the vehicle charge and discharge interface, and is used to control the connection status between the power battery and the vehicle charge and discharge interface according to control instructions; the second contactor group is connected to the vehicle-mounted inverter and the vehicle charge and discharge interface, and is used to control the connection status between the vehicle-mounted inverter and the vehicle charge and discharge interface according to control instructions.

[0031] In one embodiment of the present application, if the working mode received by the conversion control module is DC charging mode and the interface connection request is DC charging gun connection, the control instruction generated by the conversion control module is to close the first contactor group and disconnect the second contactor group; if the working mode received by the conversion control module is DC discharge mode and the interface connection request is DC discharge gun connection, the control instruction generated by the conversion control module is to close the first contactor group and disconnect the second contactor group; if the working mode received by the conversion control module is AC discharge mode and the interface connection request is external load connection, or the working mode received by the conversion control module is AC discharge mode and the interface connection request is external load connection and internal load connection, the control instruction generated by the conversion control module is to disconnect the first contactor group and close the second contactor group; if the working mode received by the conversion control module is inverter power supply mode and the interface connection request is internal load connection, the control instruction generated by the conversion control module is to disconnect the first contactor group and disconnect the second contactor group.

[0032] In this embodiment, Figure 2 is a block diagram of an energy management system shown in another exemplary embodiment of the present application, with reference to Figure 2As shown, if the working mode received by the conversion control module is DC charging mode and the interface connection request is DC charging gun connection, it means that the user demand is to perform DC charging on the vehicle, and the DC charging gun has been inserted into the DC charging socket (i.e., the vehicle charging and discharging interface), then the control instruction generated by the conversion control module is to close the first contactor group and disconnect the second contactor group to control the vehicle to enter and execute the DC charging mode; if the working mode received by the conversion control module is DC discharge mode and the interface connection request is DC discharge gun connection, then the user demand is to perform DC discharge on the vehicle, for example, to discharge the vehicle's electricity into the grid to support the V2G function, and the DC discharge gun has been inserted into the DC charging socket, correspondingly, the other end of the DC discharge gun has been connected to the V2G discharge pile, then the control instruction generated by the conversion control module is to close the first contactor group and disconnect the second contactor group; if the working mode received by the conversion control module is AC discharge mode and the interface connection request is external load connection, or the working mode received by the conversion control module is AC discharge mode and the interface connection request is If the external load is connected and the internal load is connected, it means that the user needs to perform AC discharge on the vehicle, and the external load is connected to the DC charging socket of the vehicle, or, the external load is connected to the DC charging socket and the internal load is connected to the AC socket in the vehicle, then the control instruction generated by the conversion control module is to disconnect the first contactor group and close the second contactor group. It can be understood that AC discharge includes external AC discharge and internal AC discharge. External AC discharge is the V2L function, and internal AC discharge is the internal inverter power supply function, that is, providing AC power to the equipment in the vehicle. When connecting to the DC charging socket, it is necessary to use a DC to AC output plug for conversion to avoid incompatibility between the plug and the socket; if the working mode received by the conversion control module is the inverter power supply mode and the interface connection request is for the internal load connection, it means that the user needs to perform the internal inverter power supply function on the vehicle, that is, providing AC power to the equipment in the vehicle, and the internal load is connected to the AC socket in the vehicle, then the control instruction generated by the conversion control module is to disconnect the first contactor group and disconnect the second contactor group to improve vehicle safety. Among them, the DC charging mode and the DC discharging mode do not involve energy conversion, but only energy transfer. The AC discharge mode and the inverter power supply mode involve not only energy conversion but also energy transfer. It can be understood that the above energy conversion is the energy conversion of DC and AC, and the energy transfer is the transfer of energy from one device to another device, for example, transferring energy from the power battery to the load, transferring energy from the charging pile to the power battery, etc.

[0033] In one embodiment of the present application, the conversion control module can also generate control instructions based on the received charging gun connection status, charging gun type and operation request, or generate control instructions based on the load connection status, load type and operation request, and send the control instructions to the contactor module.

[0034] In this embodiment, if the charging gun connection state is connected, the charging gun type is a DC charging gun, and the operation request is a charging request, the control instruction generated is to close the first contactor group and disconnect the second contactor group, thereby controlling the working mode of the energy management system to be a DC charging mode; if the charging gun connection state is connected, the charging gun type is a DC charging gun, and the operation request is a discharge request, the control instruction generated is to close the first contactor group and disconnect the second contactor group, thereby controlling the working mode of the energy management system to be a DC discharge mode; if the load connection state is connected, the load type is an external load, and the operation request is a discharge request, the control instruction generated is to close the first contactor group and disconnect the second contactor group, thereby controlling the working mode of the energy management system to be a DC discharge mode. The instruction is to disconnect the first contactor group and close the second contactor group, thereby controlling the working mode of the energy management system to the AC discharge mode; if the load connection state is connected, the load type is external load and internal load, and the operation request is a discharge request, then the generated control instruction is to disconnect the first contactor group and close the second contactor group, thereby controlling the working mode of the energy management system to the AC discharge mode; if the load connection state is connected, the load type is internal load and the operation request is a discharge request, then the generated control instruction is to disconnect the first contactor group and disconnect the second contactor group, thereby controlling the working mode of the energy management system to the inverter power supply mode.

[0035] In one embodiment of the present application, a new high-voltage architecture solution for an energy management system is provided, which eliminates the AC charging and discharging interface and realizes multiple operating modes such as DC charging mode, DC discharging mode, AC discharging mode and inverter power supply mode by switching the contactors in the vehicle inverter and contactor module. Figure 2 As shown, Figure 2 This is a block diagram of an energy management system shown in another exemplary embodiment of the present application. The energy management system includes a power battery, an onboard inverter, a contactor module and a conversion control module. The contactor module includes a first contactor group and a second contactor group. The first contactor group includes Figure 2 The fast charging positive contactor and the fast charging negative contactor in the second contactor group include Figure 2 Inverter contactor L and inverter contactor N. It can be understood that when the first contactor group is opened or closed, the fast charge positive contactor and the fast charge negative contactor are both opened or closed; when the second contactor group is opened or closed, the inverter contactor L and the inverter contactor N are both opened or closed.

[0036] In this embodiment, the power battery is used to provide power support and provide functions such as charging and discharging. The power battery is connected to the on-board inverter, and the energy conversion between DC and AC is performed through the on-board inverter. The contactor module realizes switching between working modes by controlling the combination of the first contactor group and the second contactor group to ensure efficient operation of energy management. Switching between working modes can realize functions such as DC charging, DC discharging, AC vehicle-outside V2L, and AC vehicle-inside V2L. The electric vehicle control system is used to monitor and adjust the working mode, and automatically select the appropriate mode based on user input or vehicle status. The following working modes and control methods are exemplified: Figure 3 This is a flow chart of DC charging or DC discharging according to an exemplary embodiment of the present application. Figure 3 As shown, based on the user's intention, a DC charging gun is connected. The BMS (Battery Management System) of the vehicle-side power battery determines the connection status of the charging gun through connection guidance, and obtains the charging request issued by the charging pile through bus interaction (the actual request can be initiated by the user). When the BMS receives the charging request, it controls the first contactor group to close and the second contactor group to disconnect, entering the DC charging process to charge the power battery.

[0037] DC discharge mode and its corresponding control method, such as Figure 3 As shown, based on the user's intention, a DC discharge gun is connected. The BMS determines the connection status of the charging gun through the connection guide, and obtains the discharge request issued by the pile end through bus interaction (the actual request can be initiated by the user). When the BMS receives the discharge request, it controls the first contactor group to close and the second contactor group to disconnect, entering the DC discharge process, and the power battery discharges to the grid through the discharge pile.

[0038] In the DC charging mode or the DC discharging mode, since the first contactor group and the second contactor group are in an isolated state, the inverter power supply mode in the vehicle can be turned on or off according to user needs.

[0039] like Figure 4 As shown, Figure 4This is a flowchart of AC discharge shown in an exemplary embodiment of the present application. In accordance with the user's intention, the AC discharge gun is connected through a conversion connector, i.e., a DC to AC output plug. The BMS of the vehicle-side power battery determines the connection status of the discharge gun through the connection guide and identifies it as a discharge mode. The vehicle-side pops up a selection window of "discharge outside the vehicle" and "discharge inside the vehicle", and the user selects according to needs. According to needs, the first contactor group is controlled to be disconnected, or the first contactor group and the second contactor group are controlled to be disconnected, and the discharge inside the vehicle can be turned on alone, or the discharge inside the vehicle and the discharge outside the vehicle can be turned on at the same time. It can be understood that when the first contactor group is disconnected, the discharge inside the vehicle can be turned on alone, or the discharge inside the vehicle and the discharge outside the vehicle can be turned on at the same time; when the first contactor group and the second contactor group are disconnected, the discharge inside the vehicle can be turned on alone.

[0040] In this embodiment, continue to refer to Figure 2 The contactor module's switching operating modes are described below: When the first contactor group is connected and the second contactor group is disconnected, the DC charging socket (i.e., the vehicle's charging and discharging interface) is connected to a DC charging gun, entering the DC charging process and enabling DC charging. When the first contactor group is connected and the second contactor group is disconnected, the DC charging socket is connected to a DC discharge gun (V2G discharge pile), entering the DC discharge process and enabling DC discharge, supporting V2G (Vehicle to Grid) functionality. When the first contactor group is disconnected and the second contactor group is connected, the DC charging socket is connected to a DC-to-AC output plug. One side of the DC-to-AC output plug is connected to the vehicle's DC charging socket, and the other side is connected to a V2L discharge gun. This initiates the V2L process and enables AC V2L, meaning the vehicle provides AC power to external devices. When both the first and second contactor groups are disconnected, the vehicle's inverter power supply mode is selected, powering the vehicle's 220V loads.

[0041] This application simplifies the vehicle's external interface design and reduces vehicle manufacturing costs by eliminating the AC charging and discharging interface. This application retains the on-board inverter and optimizes the PDU (power distribution unit). Specifically, the on-board inverter is retained and a second contactor group is added. Through different combinations of the first contactor group and the second contactor group, switching between multiple working modes can be achieved, thereby realizing energy management corresponding to different working modes.

[0042] The present application also provides an energy management method, which includes at least the following steps: in response to receiving a control instruction, controlling the connection status of the contactor module based on the control instruction so that the energy management system performs energy management based on different working modes, and the energy management includes energy transfer and energy conversion between direct current and alternating current, wherein the contactor module is connected to the power battery and the on-board inverter, the on-board inverter is connected to the power battery, and the on-board inverter is used to convert the direct current output by the power battery into alternating current.

[0043] In one embodiment of the present application, the control instruction is generated by: acquiring the working mode and the interface connection request; and generating the control instruction according to the working mode and the interface connection request.

[0044] In one embodiment of the present application, controlling the connection state of the contactor module based on a control instruction includes: controlling the connection state of the first contactor group and the second contactor group based on the control instruction, wherein the contactor module includes a first contactor group and a second contactor group, the first contactor group is connected to the power battery and the vehicle charging and discharging interface, and the second contactor group is connected to the vehicle inverter and the vehicle charging and discharging interface.

[0045] In one embodiment of the present application, if the received working mode is DC charging mode and the interface connection request is DC charging gun connection, the generated control instruction is to close the first contactor group and disconnect the second contactor group; if the received working mode is DC discharge mode and the interface connection request is DC discharge gun connection, the generated control instruction is to close the first contactor group and disconnect the second contactor group; if the received working mode is AC discharge mode and the interface connection request is external load connection, or the received working mode is AC discharge mode and the interface connection request is external load connection and internal load connection, the generated control instruction is to disconnect the first contactor group and close the second contactor group; if the received working mode is inverter power supply mode and the interface connection request is internal load connection, the generated control instruction is to disconnect the first contactor group and disconnect the second contactor group.

[0046] It should be noted that the energy management method provided in the above embodiment and the energy management system provided in the above embodiment are based on the same concept. The specific manner in which each module and unit performs operations has been described in detail in the system embodiment and will not be repeated here. In actual applications, the energy management method provided in the above embodiment can be assigned to different steps or execution sequences as needed, that is, the internal sequence of the above steps can be divided into different execution steps to complete all or part of the functions described above, and this is not limited here.

[0047] This application eliminates the AC charging and discharging interface of the vehicle and retains the DC charging and discharging interface of the vehicle as the vehicle charging and discharging interface, thereby reducing the external interfaces of the vehicle and improving the simplicity of the overall design. By eliminating the additional AC charging and discharging interface and related hardware, the manufacturing cost of the vehicle is reduced. By switching the on-board inverter and contactor module, the vehicle can flexibly switch between different working modes, improve the performance of electric vehicles in charging, discharging, V2L and other applications, optimize the energy utilization of the vehicle, and achieve more efficient energy management of the vehicle, and can convert and distribute energy according to actual needs. In addition, through the collaboration between the vehicle charging and discharging interface and the on-board inverter, the vehicle can provide AC power to external loads, improving the functionality and flexibility of new energy vehicles.

[0048] An embodiment of the present application also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, which, when executed by one or more processors, enables the electronic device to implement the energy management method provided in the above-mentioned embodiments.

[0049] Figure 5 The following is a schematic diagram showing the structure of a computer system suitable for implementing an electronic device according to an embodiment of the present application. Figure 5 The computer system 500 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0050] like Figure 5 As shown, computer system 500 includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes, such as executing the methods provided in the various embodiments described above, based on programs stored in read-only memory (ROM) 502 or programs loaded from storage 508 into random access memory (RAM) 503. RAM 503 also stores various programs and data required for system operation. CPU 501, ROM 502, and RAM 503 are interconnected via bus 504. An input / output (I / O) interface 505 is also connected to bus 504.

[0051] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, mouse, and the like; an output section 507 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and speakers; a storage section 508 including devices such as a hard disk; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card or a modem. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. Removable media 511, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 510 as needed, so that computer programs read from the media can be installed in the storage section 508 as needed.

[0052] In particular, according to embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for executing the methods illustrated in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via the communication section 509 and / or installed from removable media 511. When executed by the central processing unit (CPU) 501, the computer program performs the various functions defined in the system of the present application.

[0053] It should be noted that the computer-readable medium described in the embodiments of this application may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium may, for example, be an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. This propagated data signal may take a variety of forms, including, but not limited to, an electromagnetic signal, an optical signal, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. A computer program embodied on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, or any suitable combination thereof.

[0054] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, program segment, or part of the code, and the above-mentioned module, program segment, or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0055] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. In some cases, the names of these units do not constitute limitations on the units themselves.

[0056] Another aspect of the present application provides a computer-readable storage medium having a computer program stored thereon. When executed by a computer processor, the computer program causes the computer to perform the energy management methods provided in the above embodiments. The computer-readable storage medium may be included in the electronic device described in the above embodiments, or may exist independently and not be incorporated into the electronic device.

[0057] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiment of the application, the features and functions of two or more modules or units described above can be concretized in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0058] Another aspect of the present application provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the energy management method provided in each of the above embodiments.

[0059] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

[0060] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art that are not disclosed herein.

[0061] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, any equivalent modifications or alterations accomplished by a person of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this application shall be covered by the claims of this application.

Claims

1. An energy management system, characterized in that: The energy management system includes a power battery, an on-board inverter, a contactor module and a conversion control module; The vehicle-mounted inverter is connected to the power battery and is used to convert the direct current output by the power battery into alternating current; The contactor module is connected to the power battery and the vehicle-mounted inverter, and is used to control the connection status of the contactor module according to the control instructions sent by the conversion control module, so that the energy management system performs energy management based on different working modes, and the energy management includes energy transfer and energy conversion between direct current and alternating current.

2. The energy management system according to claim 1, characterized in that: The conversion control module generates a control instruction according to the received working mode and interface connection request, and sends the control instruction to the contactor module.

3. The energy management system according to claim 1, characterized in that: The contactor module includes a first contactor group and a second contactor group; The first contactor group is connected to the power battery and the vehicle charging and discharging interface, and is used to control the connection state between the power battery and the vehicle charging and discharging interface according to the control instruction; The second contactor group is connected to the vehicle-mounted inverter and the vehicle charging and discharging interface, and is used to control the connection state between the vehicle-mounted inverter and the vehicle charging and discharging interface according to the control instruction.

4. The energy management system according to any one of claims 1 to 3, characterized in that: If the operating mode received by the conversion control module is the DC charging mode and the interface connection request is for a DC charging gun connection, the control instruction generated by the conversion control module is to close the first contactor group and open the second contactor group; If the operating mode received by the conversion control module is the DC discharge mode and the interface connection request is for a DC discharge gun connection, the control instruction generated by the conversion control module is to close the first contactor group and open the second contactor group; If the operating mode received by the conversion control module is the AC discharge mode and the interface connection request is for external load connection, or if the operating mode received by the conversion control module is the AC discharge mode and the interface connection request is for external load connection and internal load connection, the control instruction generated by the conversion control module is to open the first contactor group and close the second contactor group; If the working mode received by the conversion control module is the inverter power supply mode and the interface connection request is for in-vehicle load connection, the control instruction generated by the conversion control module is to disconnect the first contactor group and the second contactor group.

5. An energy management method, characterized in that: Applied to an energy management system, the method includes: In response to receiving a control instruction, the connection state of the contactor module is controlled based on the control instruction so that the energy management system performs energy management based on different operating modes, and the energy management includes energy transfer and energy conversion between direct current and alternating current, wherein the contactor module is connected to the power battery and the on-board inverter, the on-board inverter is connected to the power battery, and the on-board inverter is used to convert the direct current output by the power battery into alternating current.

6. The energy management method according to claim 5, characterized in that: The control instructions are generated in the following way: Get working mode and interface connection request; The control instruction is generated according to the working mode and the interface connection request.

7. The energy management method according to claim 5, characterized in that: Controlling the connection state of the contactor module based on the control instruction includes: The connection status of the first contactor group and the second contactor group is controlled based on the control instruction, wherein the contactor module includes the first contactor group and the second contactor group, the first contactor group is connected to the power battery and the vehicle charging and discharging interface, and the second contactor group is connected to the vehicle inverter and the vehicle charging and discharging interface.

8. The energy management method according to any one of claims 5 to 7, characterized in that: The method further comprises: If the received working mode is DC charging mode and the interface connection request is for DC charging gun connection, the generated control instruction is to close the first contactor group and open the second contactor group; If the received working mode is the DC discharge mode and the interface connection request is for a DC discharge gun connection, the generated control instruction is to close the first contactor group and open the second contactor group; If the received operating mode is the AC discharge mode and the interface connection request is for external load connection, or if the received operating mode is the AC discharge mode and the interface connection request is for external load connection and internal load connection, the generated control instruction is to open the first contactor group and close the second contactor group; If the received working mode is the inverter power supply mode and the interface connection request is for in-vehicle load connection, the generated control instruction is to disconnect the first contactor group and the second contactor group.

9. An electronic device, characterized in that: The electronic device comprises: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the electronic device to implement the energy management method according to any one of claims 5 to 8.

10. A computer-readable storage medium, characterized in that A computer program is stored thereon, and when the computer program is executed by a processor of a computer, the computer is caused to execute the energy management method according to any one of claims 5 to 8.

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