Optical storage and charging integrated machine

Abstract

The utility model provides a kind of light storage fills integrated machine. Among them, light storage fills integrated machine includes: energy storage battery module, energy storage battery module includes: first positive pole direct current bus and first negative pole direct current bus;High voltage electrical box, high voltage electrical box includes: busbar, and the output port of busbar is connected with inverter;Direct current charging module, direct current charging module includes: second positive pole direct current bus and second negative pole direct current bus;Wherein, direct current charging module is located above high voltage electrical box, energy storage battery module is located below high voltage electrical box, and direct current charging module, high voltage electrical box and energy storage battery module are connected using plug-in terminal mode;First positive pole direct current bus and second positive pole direct current bus are electrically connected with the first port of busbar respectively, and first negative pole direct current bus and second negative pole direct current bus are electrically connected with the second port of busbar respectively.The utility model solves the problems of complex wiring, high installation cost, poor heat dissipation and inconvenient operation in related technology.

Description

Technical Field

[0001] This utility model relates to the field of power technology, and more specifically, to an integrated photovoltaic, energy storage and charging machine. Background Technology

[0002] With the increasing scarcity of non-renewable energy and growing environmental pressures both domestically and internationally, countries worldwide are vigorously promoting renewable energy. The development and utilization of solar energy is an inevitable trend, and storing and utilizing solar energy is a necessary energy choice. Simultaneously, the current societal emphasis on green environmental protection and energy conservation has led to a year-on-year increase in the penetration rate of new energy vehicles, with some countries already implementing plans to ban the sale of gasoline-powered vehicles. Integrated photovoltaic-storage-charging systems are new types of power systems that combine photovoltaics, energy storage batteries, electric vehicle charging, the power grid, and loads through power electronic conversion technology. Currently, most integrated photovoltaic-storage-charging systems on the market adopt a split structure, consisting of a hybrid inverter, energy storage battery, and distributed charging pile installation. However, these technologies require the connection of power cables and communication cables between various functional modules, resulting in complex wiring, high installation costs, poor heat dissipation, and inconvenient operation. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model proposes an integrated photovoltaic storage and charging machine.

[0005] In view of the above, according to the first aspect of this utility model, a photovoltaic-storage-charging integrated machine is proposed, wherein the photovoltaic-storage-charging integrated machine includes: an energy storage battery module for storing energy, the energy storage battery module including: a first positive DC bus and a first negative DC bus; a high-voltage electrical box for realizing electrical connection protection function, energy scheduling function and energy monitoring function, the high-voltage electrical box including: a busbar, the output port of the busbar being connected to an inverter; a DC charging module for realizing bidirectional energy flow, the DC charging module including: a second positive DC bus and a second negative DC bus; wherein the DC charging module is located above the high-voltage electrical box, the energy storage battery module is located below the high-voltage electrical box, and the DC charging module, the high-voltage electrical box and the energy storage battery module are connected by a plug-in terminal method; the first positive DC bus and the second positive DC bus are respectively electrically connected to the first port of the busbar, and the first negative DC bus and the second negative DC bus are respectively electrically connected to the second port of the busbar.

[0006] The integrated photovoltaic-energy storage-charging unit proposed in this utility model mainly includes: an energy storage battery module, a high-voltage electrical box, and a DC charging module. The energy storage battery module is mainly used for storing and releasing energy. The high-voltage electrical box is mainly used for electrical connection protection, energy dispatching, and energy monitoring. The DC charging module enables bidirectional energy flow. Further, the energy storage battery module includes: a first positive DC bus and a first negative DC bus. The DC charging module includes: a second positive DC bus and a second negative DC bus. The high-voltage electrical box includes: a busbar. The first and second positive DC buses are electrically connected to the first port of the busbar, and the first and second negative DC buses are electrically connected to the second port of the busbar. The output port of the busbar is connected to the inverter. This means that the energy storage battery module and the DC charging module share a single power interface. By sharing this interface, both the DC charging module and the energy storage battery module can be connected to the inverter, allowing the inverter to transfer energy to either the DC charging module or the energy storage battery module, or vice versa. Furthermore, the DC charging module is located above the high-voltage electrical box, and the energy storage battery module is located below it. The DC charging module, the high-voltage electrical box, and the energy storage battery module are connected via plug-in terminals. In other words, the DC charging module, the high-voltage electrical box, and the energy storage battery module are arranged sequentially from top to bottom using plug-in terminals to form an integrated photovoltaic-energy storage-charging unit. By stacking the DC charging module, high-voltage electrical box, and energy storage battery module sequentially from top to bottom, the high-voltage electrical box isolates the DC charging module from the energy storage battery module, thus solving the heat dissipation problem in related technologies. Furthermore, placing the high-voltage electrical box in the middle simplifies the wiring within the integrated photovoltaic-energy storage-charging unit. Simultaneously, placing the DC charging module at the top enhances user convenience. This invention solves the problems of complex wiring, high installation costs, poor heat dissipation, and inconvenient operation in related technologies.

[0007] In some technical solutions, the high-voltage electrical box may optionally include: a voltage and current acquisition module connected to the busbar for acquiring voltage and / or current; and a first controller connected to the voltage and current acquisition module for monitoring the acquired voltage and / or current and performing energy dispatch based on the acquired voltage and / or current.

[0008] In this technical solution, the high-voltage electrical box also includes a voltage and current acquisition module and a first controller. The voltage and current acquisition module is connected to the busbar and can acquire the voltage and / or current of the energy storage battery module, the DC charging module, and the inverter. Furthermore, the first controller is connected to the voltage and current acquisition module. The first controller can monitor the voltage and / or current acquired by the acquisition module and perform energy dispatching based on the acquired voltage and / or current. In other words, the first controller can allocate the operating modes of the energy storage battery module and the DC charging module. By incorporating the voltage and current acquisition module and the first controller into the high-voltage electrical box, the high-voltage electrical box can achieve energy dispatching and energy monitoring functions.

[0009] In some technical solutions, the high-voltage electrical box may optionally include: a first communication port, through which the first controller communicates with the inverter and is used to send control commands to the inverter.

[0010] In this technical solution, the high-voltage electrical box further includes a first communication port. The first controller is connected to the first communication port, and the first communication port is connected to the inverter, thereby enabling the first controller to communicate with the inverter through the first communication port and thus send control commands to the inverter. This invention achieves communication between the first controller and the inverter by setting a first communication port in the voltage electrical box.

[0011] In some technical solutions, optionally, the DC charging module includes: a charging gun interface for connecting to a charging gun, which is used to connect to an electric vehicle; a DC-DC converter module, the first end of which is connected to a second positive DC bus and a second negative DC bus, and the second end of which is connected to the charging gun interface for voltage conversion and energy transmission; a second communication port for communication connection; a second controller, the first end of which is connected to the second communication port, and the second communication port is connected to the first communication port to connect the first controller and the second controller; the second end of the second controller is connected to the charging gun interface, and the third end of the second controller is connected to the DC-DC converter module for controlling the operation of the DC-DC converter module according to control commands issued by the first controller.

[0012] In this technical solution, the DC charging module includes: a charging gun interface, a DC-DC converter module, a second communication port, and a second controller. The charging gun interface connects to a charging gun, which in turn connects to an electric vehicle, enabling the connection between the photovoltaic-energy storage-charging integrated unit and the electric vehicle. The first end of the DC-DC converter module is connected to a second positive DC bus and a second negative DC bus, respectively. The second end of the DC-DC converter module is connected to the charging gun interface, allowing the DC-DC converter to perform voltage conversion and energy transfer. The second communication port enables the DC charging module to communicate with external systems. The first end of the second controller is connected to the second communication port, which in turn connects to the first communication port, thus enabling communication between the second and first controllers. This allows the second controller to receive control commands from the first controller. The second end of the second controller is connected to the charging gun interface, and the third end of the second controller is connected to the DC-DC converter module, allowing the second controller to control the DC-DC converter module and the charging gun according to the received control commands.

[0013] In some technical solutions, the DC charging module may optionally include a relay, with its first end connected to the charging gun interface and its second end connected to the DC-DC converter module. When the relay is in the open state, the DC-DC converter module stops transmitting energy to the charging gun; when the relay is in the closed state, the DC-DC converter module transmits energy to the charging gun.

[0014] In this technical solution, the DC charging module also includes a relay. The first terminal of the relay is connected to the charging gun interface, and can be connected to the charging gun power interface. The second terminal of the relay is connected to the DC-DC converter module. When the relay is in the open state, the DC-DC converter module stops transmitting energy to the charging gun; when the relay is in the closed state, the DC-DC converter module transmits energy to the charging gun. By placing a relay between the DC-DC converter module and the charging gun interface, the technical effect of controlling the energy flow between the DC-DC converter module and the charging gun is achieved.

[0015] In some technical solutions, optionally, the charging gun interface includes: a charging gun power interface, through which the DC-DC converter module is connected to the charging gun for transmitting energy to the charging gun; and a charging gun communication interface, through which the second controller is connected to the charging gun for sending control commands to the charging gun or receiving status information sent by the charging gun.

[0016] In this technical solution, the charging gun interface includes a charging gun power interface and a charging gun communication interface. The charging gun power interface is connected to both the DC-DC converter module and the charging gun; that is, the DC-DC converter module is connected to the charging gun through the charging gun power interface, thereby enabling energy transfer between the DC-DC converter module and the charging gun. The charging gun communication interface is connected to both the second controller and the charging gun; that is, the second controller communicates with the charging gun through the charging gun communication interface, enabling the second controller to send control commands to the charging gun or to receive status information sent by the charging gun.

[0017] In some technical solutions, optionally, the energy storage battery module includes: at least one energy storage battery, wherein multiple energy storage batteries are connected in series and the multiple energy storage batteries are stacked sequentially to form an energy storage battery module.

[0018] In this technical solution, the energy storage battery module includes at least one energy storage battery, and each energy storage battery is connected in series with others. Multiple energy storage batteries are also stacked sequentially to form the energy storage battery module. In other words, the number of energy storage batteries in the energy storage battery module can be configured according to the user's actual needs, thus facilitating the expansion of the power capacity of the photovoltaic-energy storage-charging integrated machine.

[0019] In some technical solutions, the energy storage battery optionally includes: a battery cell for storing or releasing energy; and a third controller, the first terminal of which is communicatively connected to the battery cell, and the second terminal of which is communicatively connected to the first positive DC bus, for controlling the storage or release of energy by the battery cell.

[0020] In this technical solution, the energy storage battery includes a battery cell and a third controller. The battery cell is primarily used for storing or releasing energy. The first terminal of the third controller is communicatively connected to the battery cell, and the second terminal is communicatively connected to the first positive DC bus. The third controller can control the battery cell to store or release energy based on the voltage or current of the first positive DC bus.

[0021] In some technical solutions, the high-voltage electrical box can be detachably connected to the inverter. There are multiple types of inverters, and the types of inverters correspond to the inverter communication protocols within the inverters.

[0022] In this technical solution, the high-voltage electrical box is detachably connected to the inverter. Multiple types of inverters are available, each corresponding to a specific inverter communication protocol. In other words, inverters can be categorized into several types based on their communication protocols. The high-voltage electrical box integrates multiple inverter communication protocols, primarily integrated into the first controller. This allows the high-voltage electrical box to connect to multiple inverters with different communication protocols. Consequently, the integrated photovoltaic-storage-charging system can connect to inverters from different manufacturers, thus facilitating user operation.

[0023] In some technical solutions, the DC charging module is optionally an optional module that can be plugged into the high-voltage electrical box. When the DC charging module is connected to the high-voltage electrical box, the photovoltaic-storage-charging integrated machine expands its bidirectional DC charging function.

[0024] In this technical solution, the DC charging module is an optional module. The DC charging module and the high-voltage electrical box are pluggable, meaning they are detachably connected. Users can select a suitable DC charging module to connect to the high-voltage electrical box according to their needs, thus forming an integrated photovoltaic, energy storage, and charging unit. When the DC charging module is connected to the high-voltage electrical box, the integrated photovoltaic, energy storage, and charging unit expands its bidirectional DC charging function, achieving bidirectional DC charging capability.

[0025] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This shows one of the structural schematic diagrams of an integrated photovoltaic, energy storage, and charging machine in related technologies;

[0028] Figure 2 The second schematic diagram of the integrated photovoltaic, energy storage, and charging machine in the relevant technology is shown.

[0029] Figure 3 One of the structural schematic diagrams of an embodiment of the integrated optical storage and charging machine of this utility model is shown;

[0030] Figure 4 The second schematic diagram shows the structure of an integrated optical storage and charging machine according to an embodiment of the present invention;

[0031] Figure 5 The third schematic diagram shows the structure of an integrated optical storage and charging machine according to an embodiment of the present invention;

[0032] Figure 6The fourth schematic diagram shows the structure of an integrated optical storage and charging machine according to an embodiment of the present invention;

[0033] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0034] 10' Photovoltaic-Storage-Charging Integrated Unit, 102' Inverter, 104' DC Charging Module, 106' Energy Storage Battery Module, 108' Base, 1062' Energy Storage Battery.

[0035] Figures 3 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0036] 10. Photovoltaic-Storage-Charging Integrated Unit; 102. Energy Storage Battery Module; 1022. First Positive DC Bus; 1024. First Negative DC Bus; 104. High Voltage Electrical Box; 1042. Busbar; 1044. First Port; 1046. Second Port; 1048. Output Port; 108. Inverter; 106. DC Charging Module; 1062. Second Positive DC Bus; 1064. Second Negative DC Bus; 110. Voltage and Current Acquisition Module; 112. First Controller; 114. First Communication Port; 116. Charging Gun Interface; 118. DC-DC Converter Module; 1182. DC-DC Converter The module includes: first terminal, 1184 DC-DC converter module second terminal, 120 second controller, 1202 first terminal of second controller, 1204 second terminal of second controller, 1206 third terminal of second controller, 122 relay, 124 electric vehicle, 126 energy storage battery, 128 battery cell, 130 third controller, 1302 first terminal of third controller, 1304 second terminal of third controller, 132 fuse, 134 base, 136 charging gun communication interface, 138 charging gun power interface, 140 charging gun, and 142 second communication port. Detailed Implementation

[0037] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0039] like Figure 1 and Figure 2 As shown, Figure 1 For the integrated photovoltaic, energy storage, and charging unit 10' in related technologies, in Figure 1 In the middle, the photovoltaic-storage-charging integrated machine 10' consists of, from top to bottom, a PCS (Power Conversion System, inverter) 102', a DC charging module 104', an energy storage battery module 106', and a base 108'. The energy storage battery module 106' includes multiple energy storage batteries 1062'. Figure 2 For the integrated photovoltaic, energy storage, and charging unit 10' in related technologies, in Figure 2 In the photovoltaic-energy storage-charging integrated unit 10', from top to bottom, there are a PCS (Power Conversion System, inverter) 102', an energy storage battery module 106', a DC charging module 104', and a base 108'. The energy storage battery module 106' includes multiple energy storage batteries 1062'. Therefore, in related technologies, the photovoltaic-energy storage-charging integrated unit 10' adopts a split structure, i.e., the inverter 102', energy storage battery, and DC charging module 104' are distributed and installed. Power cables and communication cables need to be connected between the various functional modules, making installation complex, requiring professional installation, resulting in long installation time, high installation costs, and difficulties in capacity expansion and construction.

[0040] like Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, this utility model proposes a photovoltaic-storage-charging integrated machine 10, which includes: an energy storage battery module 102 for storing energy, the energy storage battery module 102 including: a first positive DC bus 1022 and a first negative DC bus 1024; a high-voltage electrical box 104 for realizing electrical connection protection, energy dispatching, and energy monitoring functions, the high-voltage electrical box 104 including: a bus 1042, the output port 1048 of the bus 1042 being connected to an inverter 108; and a DC charging module 106 for realizing bidirectional energy flow, the DC charging module 106 including: a first positive DC bus 1022 and a first negative DC bus 1024; a first positive DC bus 1022 and a first negative DC bus 1024; a second positive DC bus 1022 and a third negative DC bus 1024; a third positive DC bus 1022 and a fourth negative DC bus 1024; and a fifth positive DC bus 1022 and a sixth negative DC bus 1024. Two positive DC buses 1062 and a second negative DC bus 1064; wherein, the DC charging module 106 is located above the high-voltage electrical box 104, and the energy storage battery module 102 is located below the high-voltage electrical box 104. The DC charging module 106, the high-voltage electrical box 104, and the energy storage battery module 102 are connected by plug-in terminals; the first positive DC bus 1022 and the second positive DC bus 1062 are electrically connected to the first port 1044 of the busbar 1042, and the first negative DC bus 1024 and the second negative DC bus 1064 are electrically connected to the second port 1046 of the busbar 1042.

[0041] The photovoltaic-storage-charging integrated unit 10 proposed in this utility model mainly includes: an energy storage battery module 102, a high-voltage electrical box 104, and a DC charging module 106. The energy storage battery module 102 is mainly used for storing and releasing energy, and is formed by stacking at least one energy storage battery 126. The energy storage battery module 102 supports charging and discharging, energy storage, fault protection, local data storage, and communication data reporting. When the energy storage battery module 102 has low power, it can be charged by drawing power from the grid or from the photovoltaic modules according to scheduling and actual scenario requirements. When the system operates in off-grid mode or according to scheduling needs, the energy storage battery module 102 can also discharge to the load through the inverter 108.

[0042] The high-voltage electrical box 104 is mainly used to realize electrical connection protection, energy dispatching, and energy monitoring functions. Specifically, the high-voltage electrical box 104 integrates the wiring of the entire power section of the photovoltaic-storage-charging integrated unit 10, reducing the number of wiring harnesses. It also integrates electrical components such as relays 122, circuit breakers, and fuses, enabling the high-voltage electrical box 104 to have protection and switching functions. The high-voltage electrical box 104 also has functions such as external and internal voltage and current sampling, insulation impedance detection, temperature detection, and overvoltage and overcurrent protection for the photovoltaic-storage-charging integrated unit 100. Simultaneously, the high-voltage electrical box 104 also has an energy management system that integrates the communication protocols of inverters 108 from major manufacturers. Through application selection, it can flexibly adapt to the inverters 108, realizing energy dispatching and control of the entire photovoltaic-storage-charging integrated unit 10, enabling external and internal communication, thereby ensuring the normal external communication and data transmission functions of the photovoltaic-storage-charging integrated unit 10.

[0043] The DC charging module 106 enables bidirectional energy flow. Specifically, it converts AC power from the grid into a load-compatible voltage to charge the battery in the load, which can be an electric vehicle 124. For example, the grid's AC power is converted to DC power by the inverter 108. This DC energy is then converted by the DC charging module 106 through a DC-DC (Direct Current-Direct Current) conversion to a voltage compatible with the electric vehicle 124's battery, thus charging the battery. The reverse process also enables bidirectional energy flow. The energy from the electric vehicle 124's battery, after DC-DC conversion by the DC charging module 106, is connected to the battery input port of the inverter 108. Then, through the inverter 108's inversion conversion, the energy from the electric vehicle 124's battery flows to the grid side.

[0044] Furthermore, the energy storage battery module 102 includes a first positive DC bus 1022 and a first negative DC bus 1024. The DC charging module 106 includes a second positive DC bus 1062 and a second negative DC bus 1064. The high-voltage electrical box 104 includes a busbar 1042. The first positive DC bus 1022 and the second positive DC bus 1062 are electrically connected to the first port 1044 of the busbar 1042, respectively. The first negative DC bus 1024 and the second negative DC bus 1064 are electrically connected to the second port 1046 of the busbar 1042, respectively. The output port 1048 of the busbar 1042 is connected to the inverter 108. In other words, the energy storage battery module 102 and the DC charging module 106 share a power interface. By sharing a power interface, both the DC charging module 106 and the energy storage battery module 102 can be connected to the inverter 108. This allows the inverter 108 to transfer energy to both the DC charging module 106 and the energy storage battery module 102, or vice versa.

[0045] Furthermore, the DC charging module 106 is located above the high-voltage electrical box 104, and the energy storage battery module 102 is located below the high-voltage electrical box 104. The DC charging module 106, the high-voltage electrical box 104, and the energy storage battery module 102 are connected by plug-in terminals. That is, the DC charging module 106, the high-voltage electrical box 104, and the energy storage battery module 102 are arranged sequentially from top to bottom using plug-in terminals to form the photovoltaic-energy storage-charging integrated machine 10. By stacking the DC charging module 106, the high-voltage electrical box 104, and the energy storage battery module 102 sequentially from top to bottom, the high-voltage electrical box 104 can be used to isolate the DC charging module 106 from the energy storage battery module 102, thereby solving the heat dissipation problem in related technologies. Furthermore, by placing the high-voltage electrical box 104 in the middle, the wiring within the photovoltaic-energy storage-charging integrated machine 10 is made simpler. At the same time, placing the DC charging module 106 at the top facilitates user operation. This utility model solves the problems of complex wiring, high installation costs, poor heat dissipation, and inconvenient operation in related technologies.

[0046] This invention comprises a photovoltaic-energy storage-charging integrated unit 10, consisting of a DC charging module 106, a high-voltage electrical box 104, and an energy storage battery module 102 arranged sequentially from top to bottom using interlocking terminals. This arrangement facilitates heat dissipation. Specifically, the DC charging module 106 is a charging and discharging module, including power devices such as charging and discharging switches. If the DC charging module 106 is placed close to the energy storage battery module 102, it will generate heat during charging and discharging, which will heat the adjacent energy storage battery 126, significantly affecting its operating efficiency. Therefore, the energy storage battery module 102 and the DC charging module 106 need to be separated. This invention uses a high-voltage electrical box 104 to separate the DC charging module 106 and the energy storage battery module 102. The high-voltage electrical box 104 generates less heat during operation, and the heat generated by the DC charging module 106 has little impact on the operation of the high-voltage electrical box 104. Furthermore, this arrangement simplifies the electrical connection and saves wiring costs. Specifically, the high-voltage electrical box 104 contains an energy management system, which can be understood as the brain of the photovoltaic-energy storage system. The high-voltage electrical box 104 needs to be connected to both the DC charging module 106 above and the energy storage battery module 102 below. Therefore, placing the high-voltage electrical box 104 between the DC charging module 106 and the energy storage battery module 102 results in the simplest and lowest-cost wiring. This invention also makes it more convenient and user-friendly. Specifically, placing the DC charging module 106 at the top is advantageous because the charging gun 140 and its cable are relatively heavy; placing it at the top makes it easiest for users to plug and unplug the charging gun 140. If the DC charging station were placed at the bottom, the user would have to pull out the charging gun 140 from below and then lift it up to charge the car, which is more strenuous and inconvenient for the user.

[0047] Furthermore, in this invention, the photovoltaic-energy storage-charging integrated unit 10, composed of the DC charging module 106, the high-voltage electrical box 104, and the energy storage battery module 102, is separated from the inverter 108. This allows the integrated unit 10 to be compatible with inverters 108 from different manufacturers. The high-voltage electrical box 104 integrates the communication protocols of major manufacturers' inverters, and can be adapted to the communication protocols of different manufacturers' inverters 108 through an application program. In contrast, existing technology architectures integrate the inverter 108 internally, which limits the use of only a fixed inverter 108 and results in poor inverter 108 compatibility. Therefore, the photovoltaic-energy storage-charging integrated unit 10 provided by this invention is more flexible, has better compatibility, and is directly compatible with existing inverters 108 in households, resulting in lower costs for users.

[0048] In some embodiments, optionally, such as Figure 6As shown, the high-voltage electrical box 104 also includes: a voltage and current acquisition module 110, which is connected to the busbar 1042 and is used to acquire voltage and / or current; and a first controller 112, which is connected to the voltage and current acquisition module 110 and is used to monitor the acquired voltage and / or current and to perform energy scheduling based on the acquired voltage and / or current.

[0049] In this embodiment, the high-voltage electrical box 104 further includes a voltage and current acquisition module 110 and a first controller 112. The voltage and current acquisition module 110 is connected to the busbar 1042 and can acquire the voltage and / or current of the energy storage battery module 102, the DC charging module 106, and the inverter 108. Furthermore, the first controller 112 is connected to the voltage and current acquisition module 110. The first controller 112 can monitor the voltage and / or current acquired by the voltage and current acquisition module 110 and perform energy scheduling based on the acquired voltage and / or current. That is, the first controller 112 can allocate the operating modes of the energy storage battery module 102 and the DC charging module 106. Specifically, the first controller 112 issues operating mode commands to the energy storage battery module 102 and the DC charging module 106 respectively according to the actual scenario requirements, i.e., the acquired voltage and / or current. These commands include charging commands and discharging commands for the energy storage battery module 102, as well as charging commands and discharging commands for the DC charging module 106. By setting a voltage and current acquisition module 110 and a first controller 112 in the high-voltage electrical box 104, the high-voltage electrical box 104 can realize energy dispatching and energy monitoring functions.

[0050] In some embodiments, optionally, such as Figure 6 As shown, the high-voltage electrical box 104 also includes: a first communication port 114, through which the first controller 112 is connected to the inverter 108 for communication and to send control commands to the inverter 108.

[0051] In this embodiment, the high-voltage electrical box 104 further includes a first communication port 114. The first controller 112 is connected to the first communication port 114, and the first communication port 114 is connected to the inverter 108. This allows the first controller 112 to communicate with the inverter 108 via the first communication port 114, enabling the first controller 112 to issue control commands to the inverter 108. These control commands include charging / discharging commands for the electric vehicle 124 and charging / discharging commands for the energy storage battery module 102, allowing the inverter 108 to perform corresponding operations based on the received control commands. This invention achieves communication between the first controller 112 and the inverter 108 by setting a first communication port 114 in the high-voltage electrical box.

[0052] In some embodiments, optionally, such as Figure 6 As shown, the DC charging module 106 includes: a charging gun interface 116, which is used to connect to a charging gun 140, and the charging gun 140 is used to connect to an electric vehicle 124; a DC-DC converter module 118, the first terminal 1182 of which is connected to a second positive DC bus 1062 and a second negative DC bus 1064 respectively, and the second terminal 1184 of which is connected to the charging gun interface 116, for voltage conversion and energy transmission; and a second communication port 142, used for... A communication connection is established; a second controller 120, the first end 1202 of the second controller 120 is connected to a second communication port 142, and the second communication port 142 is connected to a first communication port 114, so that the first controller 112 and the second controller 120 are connected; the second end 1204 of the second controller 120 is connected to a charging gun interface 116, and the third end 1206 of the second controller 120 is connected to a DC-DC converter module 118, for controlling the operation of the DC-DC converter module 118 according to the control commands issued by the first controller 112.

[0053] In this embodiment, the DC charging module 106 includes: a charging gun interface 116, a DC-DC converter module 118, a second communication port 142, and a second controller 120. The charging gun interface 116 can be connected to the charging gun 140, and the charging gun 140 can be connected to the electric vehicle 124. The connection between the photovoltaic-storage-charging integrated machine 10 and the electric vehicle 124 can be achieved through the charging gun interface 116. The first terminal 1182 of the DC-DC converter module 118 is connected to the second positive DC bus 1062 and the second negative DC bus 1064, respectively. The second terminal 1184 of the DC-DC converter module 118 is connected to the charging gun interface 116. The DC-DC converter module 118 can perform voltage conversion and energy transmission. Specifically, when the electric vehicle 124 is charging, the inverter 108 converts the AC power from the power grid into DC power. Then, the converted DC power is converted by the DC-DC converter module 118 into a DC-DC (Direct Current-Direct Current) voltage suitable for the power battery of the electric vehicle 124, thus charging the power battery of the electric vehicle 124. This realizes the function of the power grid charging the electric vehicle 124. Alternatively, the energy of the power battery of the electric vehicle 124 is converted by the DC-DC converter module 118 and then transmitted to the input port of the inverter 108. Then, through the inverter conversion of the inverter 108, the energy of the electric vehicle 124 flows to the power grid side. The second communication port 142 enables the DC charging module 106 to communicate with the outside. The first terminal 1202 of the second controller 120 is connected to the second communication port 142, which is connected to the first communication port 114, thereby enabling communication between the second controller 120 and the first controller 112. This allows the second controller 120 to receive control commands from the first controller 112. The second terminal 1204 of the second controller 120 is connected to the charging gun interface 116, and the third terminal 1206 of the second controller 120 is connected to the DC-DC converter module 118. This allows the second controller 120 to control the DC-DC converter module 118 and the charging gun 140 to operate according to the received control commands.

[0054] In some embodiments, optionally, such as Figure 6 As shown, the DC charging module 106 also includes a relay 122. The first end of the relay 122 is connected to the charging gun interface 116, and the second end of the relay 122 is connected to the DC-DC converter module 118. When the relay 122 is in the open state, the DC-DC converter module 118 stops transmitting energy to the charging gun 140; when the relay 122 is in the closed state, the DC-DC converter module 118 transmits energy to the charging gun 140.

[0055] In this embodiment, the DC charging module 106 further includes a relay 122. The first end of the relay 122 is connected to the charging gun interface 116, and can be connected to the charging gun power interface 138 in the charging gun interface 116. The second end of the relay 122 is connected to the DC-DC converter module 118. When the relay 122 is in the open state, the DC-DC converter module 118 can stop transmitting energy to the charging gun 140; when the relay 122 is in the closed state, the DC-DC converter module 118 transmits energy to the charging gun 140. By setting the relay 122 between the DC-DC converter module 118 and the charging gun interface 116, the technical effect of controlling the energy flow between the DC-DC converter module 118 and the charging gun 140 is achieved.

[0056] In some embodiments, optionally, such as Figure 6 As shown, the charging gun interface 116 includes: a charging gun power interface 138, through which a DC-DC converter module 118 is connected to the charging gun 140 for transmitting energy to the charging gun 140; and a charging gun communication interface 136, through which a second controller 120 is connected to the charging gun 140 for sending control commands to the charging gun 140 or receiving status information sent by the charging gun 140.

[0057] In this embodiment, the charging gun interface 116 includes a charging gun power interface 138 and a charging gun communication interface 136. The charging gun power interface 138 is connected to both the DC-DC converter module 118 and the charging gun 140, meaning the DC-DC converter module 118 is connected to the charging gun 140 via the charging gun power interface 138, allowing energy to be transferred between the DC-DC converter module 118 and the charging gun 140. The charging gun communication interface 136 is connected to both the second controller 120 and the charging gun 140, meaning the second controller 120 communicates with the charging gun 140 via the charging gun communication interface 136, enabling the second controller 120 to send control commands to the charging gun 140 or receive status information sent by the charging gun 140. The status information may include whether the charging gun 140 is in an open state and whether the charging gun 140 is in contact with the electric vehicle 124.

[0058] In some embodiments, optionally, such as Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, the energy storage battery module 102 includes at least one energy storage battery 126, wherein multiple energy storage batteries 126 are connected in series and the multiple energy storage batteries 126 are stacked sequentially to form the energy storage battery module 102.

[0059] In this embodiment, the energy storage battery module 102 includes at least one energy storage battery 126, and each energy storage battery 126 is connected in series with each other. Multiple energy storage batteries 126 are stacked sequentially to form the energy storage battery module 102. That is, the number of energy storage batteries 126 in the energy storage battery module 102 can be configured according to the user's actual needs. When the user needs to add an energy storage battery 126, they only need to place the new energy storage battery 126 above or below the original energy storage battery module 102 and connect it in series with the original energy storage battery 126, thereby facilitating the expansion of the power capacity of the photovoltaic-energy storage-charging integrated machine 10.

[0060] In some embodiments, optionally, such as Figure 6 As shown, the energy storage battery 126 includes: a cell 128 for storing or releasing energy; and a third controller 130, the first terminal 1302 of the third controller 130 being communicatively connected to the cell 128, and the second terminal 1304 of the third controller 130 being communicatively connected to the first positive DC bus 1022, for controlling the cell 128 to store or release energy.

[0061] In this embodiment, the energy storage battery 126 includes a battery cell 128 and a third controller 130. The battery cell 128 is primarily used for storing or releasing energy. The third controller 130 can be a BMU (Battery Management Unit). The first terminal 1302 of the third controller 130 is communicatively connected to the battery cell 128, and the second terminal 1304 of the third controller 130 is communicatively connected to the first positive DC bus 1022. The third controller 130 can control the battery cell 128 to store or release energy based on the voltage or current of the first positive DC bus 1022.

[0062] Furthermore, such as Figure 6 As shown, the energy storage battery 126 also includes a fuse 132, one end of which is connected to the high-voltage electrical box 104, and the other end of which is connected to the battery cell 128.

[0063] In some embodiments, the high-voltage electrical box 104 is optionally detachably connected to the inverter 108, wherein there are multiple types of inverters 108, and the types of inverters 108 correspond to the inverter communication protocols within the inverters 108.

[0064] In this embodiment, the high-voltage electrical box 104 is detachably connected to the inverter 108. There are multiple types of inverters 108, each corresponding to its own inverter communication protocol. In other words, the inverters 108 can be categorized into several types based on their communication protocols. The high-voltage electrical box 104 integrates multiple inverter communication protocols, primarily integrated into the first controller 112. This allows the high-voltage electrical box 104 to connect to multiple inverters 108 with different communication protocols. This enables the photovoltaic-storage-charging integrated machine 10 to connect to inverters 108 from different manufacturers, thus facilitating user operation.

[0065] In some embodiments, the photovoltaic-storage-charging integrated machine 10 may optionally include a base 134, which is located below the energy storage battery module 102 and is used to support the energy storage battery module 102.

[0066] In this embodiment, such as Figures 3 to 6 As shown, the photovoltaic-energy storage-charging integrated unit 10 also includes a base 134. The base 134 is located below the energy storage battery module 102, and the base 134 provides support for the photovoltaic-energy storage-charging integrated unit 10.

[0067] In some embodiments, the DC charging module 106 is optionally an optional module that can be plugged into and connected to the high-voltage electrical box 104. When the DC charging module 106 is connected to the high-voltage electrical box 104, the photovoltaic storage and charging integrated machine 10 expands its bidirectional DC charging function.

[0068] In this embodiment, the DC charging module 106 is an optional module. The DC charging module 106 is pluggable to the high-voltage electrical box 104, meaning they are detachably connected. Users can select a suitable DC charging module 106 to connect to the high-voltage electrical box 104 according to their needs, thereby forming the integrated photovoltaic-storage-charging unit 10. When the DC charging module 106 is connected to the high-voltage electrical box 104, the integrated photovoltaic-storage-charging unit 10 expands its bidirectional DC charging function, thus achieving bidirectional DC charging capability.

[0069] Furthermore, the number of DC charging modules 106 can also be configured by the user according to actual needs.

[0070] For example, when the high-voltage electrical box 104 receives a message that the energy storage battery module 102 has low power, the high-voltage electrical box 104 sends a request to the inverter 108 to charge the energy storage battery module 102. The AC power from the grid is rectified into DC power by the AC-DC (Alternating Current-Direct Current) converter of the inverter 108, and then the DC power is converted into DC power by the internal DC-DC converter of the inverter 108 before being output. The output of the inverter 108 is then connected to the port of the energy storage battery module 102 through the high-voltage electrical box 104. After internal logic timing processing by the energy storage battery module 102, the process of grid energy flowing to the energy storage battery module 102 for storage is completed.

[0071] Furthermore, when the high-voltage electrical box 104 receives a message that the energy storage battery module 102 has low power, the high-voltage electrical box 104 sends a request to the inverter 108 to charge the energy storage battery module 102. The energy of the electric vehicle 124 then undergoes DC-DC conversion through the DC charging module 106 and is input to the energy storage battery module 102 through the terminals, thereby enabling the electric vehicle 124 to discharge to the energy storage battery module 102.

[0072] When the high-voltage electrical box 104 requests to charge the electric vehicle 124, the AC power from the grid is rectified into DC power by the inverter 108, and then converted into DC power by the DC-DC converter inside the inverter 108 before being output. The output of the inverter 108 is connected to the high-voltage electrical box 104 and then to the port of the DC charging module 106. A handshake communication is established between the DC charging module 106 and the electric vehicle 124. After a series of logical actions, the DC charging module 106 begins DC-DC conversion. The DC charging module 106 starts outputting power. After the relay 122 between the electric vehicle 124 and the DC charging module 106 is activated, completing the corresponding power connection, the grid begins to charge the battery of the electric vehicle 124.

[0073] Furthermore, when the high-voltage electrical box 104 sends a request to discharge to the grid, the energy of the electric vehicle 124 begins to undergo DC conversion through the DC charging module 106, and then is input to the inverter 108 through the terminal. After being converted by the inverter 108, it is sent to the grid, thus realizing the process of the electric vehicle 124 discharging to the grid.

[0074] In some embodiments, the photovoltaic-storage-charging integrated machine 10 is a home energy storage system that can be used for bidirectional charging of electric vehicle 124, power supply for household electrical loads, and energy storage. This energy can come from the power generation of the photovoltaic panel, the charging of the mains power, or the charging of electric vehicle 124.

[0075] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance, unless otherwise expressly specified and limited. The terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A photovoltaic, energy storage, and charging integrated machine, characterized in that, The integrated photovoltaic storage and charging unit includes: An energy storage battery module for storing energy, the energy storage battery module comprising: a first positive DC bus and a first negative DC bus; A high-voltage electrical box is used to realize electrical connection protection, energy dispatching and energy monitoring functions. The high-voltage electrical box includes a busbar, the output port of which is connected to an inverter. A DC charging module is used to realize bidirectional energy flow. The DC charging module includes: a second positive DC bus and a second negative DC bus. The DC charging module is located above the high-voltage electrical box, and the energy storage battery module is located below the high-voltage electrical box. The DC charging module, the high-voltage electrical box, and the energy storage battery module are connected by plug-in terminals. The first positive DC bus and the second positive DC bus are electrically connected to the first port of the busbar, and the first negative DC bus and the second negative DC bus are electrically connected to the second port of the busbar.

2. The integrated photovoltaic storage and charging machine according to claim 1, characterized in that, The high-voltage electrical box also includes: A voltage and current acquisition module, which is connected to the busbar, is used to acquire voltage and / or current; A first controller, connected to the voltage and current acquisition module, is used to monitor the acquired voltage and / or current and to perform energy scheduling based on the acquired voltage and / or current.

3. The integrated photovoltaic storage and charging machine according to claim 2, characterized in that, The high-voltage electrical box also includes: The first communication port is used by the first controller to communicate with the inverter and to send control commands to the inverter.

4. The integrated photovoltaic storage and charging machine according to claim 3, characterized in that, The DC charging module includes: A charging gun interface is provided for connecting to a charging gun, which is used to connect to an electric vehicle. A DC-DC converter module, wherein the first end of the DC-DC converter module is connected to the second positive DC bus and the second negative DC bus respectively, and the second end of the DC-DC converter module is connected to the charging gun interface, for voltage conversion and energy transmission; The second communication port is used for communication connections; A second controller, wherein a first end of the second controller is connected to a second communication port, and the second communication port is connected to the first communication port, so that the first controller and the second controller are connected; The second terminal of the second controller is connected to the charging gun interface, and the third terminal of the second controller is connected to the DC-DC converter module, for controlling the operation of the DC-DC converter module according to the control commands issued by the first controller.

5. The integrated photovoltaic storage and charging machine according to claim 4, characterized in that, The DC charging module also includes: A relay is provided, with its first end connected to the charging gun interface and its second end connected to the DC-DC converter module. When the relay is in the open state, the DC-DC converter module stops transmitting energy to the charging gun; when the relay is in the closed state, the DC-DC converter module transmits energy to the charging gun.

6. The integrated photovoltaic storage and charging machine according to claim 4, characterized in that, The charging gun interface includes: The DC-DC converter module is connected to the charging gun via the charging gun power interface to transfer energy to the charging gun. The second controller is connected to the charging gun via the charging gun communication interface, and is used to send control commands to the charging gun or receive status information sent by the charging gun.

7. The integrated photovoltaic storage and charging machine according to any one of claims 1 to 6, characterized in that, The energy storage battery module includes: At least one energy storage battery, wherein multiple energy storage batteries are connected in series and the multiple energy storage batteries are stacked sequentially to form the energy storage battery module.

8. The integrated photovoltaic storage and charging machine according to claim 7, characterized in that, The energy storage battery includes: Battery cells are used to store or release energy; A third controller, the first end of which is communicatively connected to the battery cell, and the second end of which is communicatively connected to the first positive DC bus, is used to control the storage or release of energy by the battery cell.

9. The integrated photovoltaic storage and charging machine according to claim 1, characterized in that, The high-voltage electrical box is detachably connected to the inverter. There are multiple types of inverters, and the type of inverter corresponds to the inverter communication protocol within the inverter.

10. The integrated photovoltaic, energy storage, and charging machine according to claim 1, characterized in that, The DC charging module is an optional module and can be plugged into the high-voltage electrical box. When the DC charging module is connected to the high-voltage electrical box, the photovoltaic energy storage and charging integrated machine expands its bidirectional DC charging function.

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