Household energy storage system

Abstract

The utility model relates to the technical field of energy storage, and discloses a household energy storage system, which comprises an electric power conversion unit, a high-voltage box, a battery pack, a base assembly, a first side plug and a second side plug, and is characterized in that the electric power conversion unit, the high-voltage box, the battery pack and the base assembly can be sequentially overlapped and mounted; the bottom of the power conversion unit and the top of the high-voltage box are respectively provided with a first butt-joint socket and a second butt-joint socket, the bottom of the high-voltage box is provided with a third butt-joint socket, and a first connector and a second connector are respectively sleeved in the top and the bottom of the battery pack. According to the household energy storage system provided by the utility model, when the household energy storage system can be integrally installed, the household energy storage system can be directly stacked for rapid structural installation and electrical connection, and when the installation space is limited and the height or space is limited, the household energy storage system can be separately installed, so that the household energy storage system is flexible and convenient to use, and the problems in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to a household energy storage system. Background Art

[0002] The current photovoltaic power generation system mainly refers to a power generation system that uses the photovoltaic effect of semiconductor materials to convert solar radiation energy into electrical energy. Compared with traditional coal resources, the energy source of the photovoltaic power generation system is inexhaustible solar energy. Its clean, safe and renewable characteristics have led to its widespread application.

[0003] At present, the electricity generated by the photovoltaic power generation system is stored in an energy storage system composed of components such as a battery system and a power conversion unit. Then, AC and DC power are exchanged between the power conversion unit and the power grid and photovoltaic system to meet user needs. However, the battery system and inverter in the existing energy storage system are generally installed separately, which makes the installation relatively complicated. Although there are existing technologies that provide all-in-one solutions, they do not support split installation and there are still major limitations on its use. Secondly, the battery system data is uploaded and controlled through the power conversion unit. If the battery system has data updates, it must be done through the power control unit. The data volume is large and inconvenient. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a household energy storage system that solves the problems raised by the above-mentioned background technology.

[0005] The present utility model provides the following technical solutions: a household energy storage system, comprising a power conversion unit, a high-voltage box, a battery pack, a base assembly, a first side plug, and a second side plug. The power conversion unit and the high-voltage box, the battery pack, and the base assembly can be stacked and installed in sequence. The bottom of the power conversion unit and the top of the high-voltage box are respectively provided with a first docking socket and a second docking socket, and the bottom of the high-voltage box is provided with a third docking socket. The top and bottom of the battery pack are respectively provided with a first connector and a second connector, and a single first connector and a single second connector can be electrically connected. The first connector can be electrically connected to the third docking socket. The top of the base assembly is provided with a first side plug that can be electrically connected to the second connector, and a transition plug is electrically connected between the first docking socket and the second docking socket.

[0006] Selected, one side of the power conversion unit is provided with an external output interface, and the specific structure of the power conversion unit is an inverter or charging module structure, one side of the power conversion unit is provided with an external interface, and the two side structures at the bottom of the power conversion unit are both clamped with a limiting angle plate installed on the top of the high-voltage box.

[0007] The high-voltage box includes a first outer protective shell, a BMS main control module mounted inside the first outer protective shell, a fuse component, and a shunt. The loop current data is collected through the shunt to control the charging and discharging process of the battery system. The fuse is used for system protection. When the system overcurrent or short circuit fault occurs, the fuse blows to achieve a protective effect.

[0008] The battery pack includes a second outer protective shell, a battery module mounted inside the second outer protective shell, and a BMS slave control module. The BMS slave control module can be wirelessly connected to the BMS master control module, thereby facilitating reading of cell-related data in the battery module.

[0009] Preferably, the number of battery packs is not less than two, and a handle is fixedly installed on the top of the second outer protective shell in a single battery pack, a groove is provided at the bottom of the second outer protective shell for accommodating the handle, and an auxiliary handle is also installed on the top of the base assembly for accommodating the handle in the groove.

[0010] Preferably, the first docking socket set at the bottom of the power conversion unit can be electrically connected to the first side plug combination, the second docking socket set at the top of the high-voltage box can be electrically connected to the second side plug combination, and the first side plug and the second side plug can be electrically connected through a guide.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The household energy storage system provided by the present invention can be directly stacked for quick structural installation and electrical connection when it can be installed in an integrated manner. When the installation space is limited, or the height or space is restricted, it can be installed in separate parts. It is flexible and convenient to use and can also solve the problems existing in the prior art.

[0013] 2. The data collection of the power conversion unit and the internal data collection of the battery pack in the household energy storage system provided by the present invention are relatively independent and do not interfere with each other. If the battery pack is replaced, there is no need to update the power conversion unit software. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view schematic diagram of the first embodiment of the structure of the utility model;

[0015] Figure 2 This is an exploded view of the first embodiment of the structure of the present utility model;

[0016] Figure 3 This is an enlarged schematic diagram of the power conversion unit of the utility model;

[0017] Figure 4It is the enlarged schematic view of the first connector of the utility model structure.

[0018] Figure 5 It is the enlarged schematic view of the second connector of the utility model structure.

[0019] Figure 6 It is the front view schematic view of the second side edge plug of the utility model structure.

[0020] Figure 7 It is the enlarged schematic view of the first side edge plug of the utility model structure.

[0021] In the drawing: 1, power conversion unit;2, high voltage box;3, battery pack;4, base assembly;5, transition plug;6, first connector;7, second connector;8, first side edge plug;9, second side edge plug. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] Please refer to Figures 1-7 A kind of household energy storage system, including power conversion unit 1, high voltage box 2, battery pack 3, base assembly 4, first side edge plug 8, second side edge plug 9, power conversion unit 1 and high voltage box 2, battery pack 3, base assembly 4 can be sequentially stacked installation, the bottom of power conversion unit 1 and the top of high voltage box 2 are provided with first docking socket and second docking socket respectively, high voltage box 2 bottom is provided with third docking socket, the top of battery pack 3 and the inside of bottom are respectively fitted with first connector 6, second connector 7, and single first connector 6 and single second connector 7 can be electrically connected, first connector 6 can be electrically connected with third docking socket, the top of base assembly 4 is provided with first side edge plug 8 that can be electrically connected with second connector 7, first docking socket and second docking socket are electrically connected with transition plug 5 between them;

[0024] The side of power conversion unit 1 is provided with external output interface, and the specific structure of power conversion unit 1 is inverter or charging module structure, the side of power conversion unit 1 is provided with external interface, and the structure of both sides of the bottom of power conversion unit 1 is clamped with the limiting angle plate installed on the top of high voltage box 2, improve the stability of the stacked installation between power conversion unit 1 and high voltage box 2.

[0025] The high-voltage box 2 includes a first outer protective shell, a BMS main control module mounted inside the first outer protective shell, a fuse component, and a shunt. The loop current data is collected through the shunt to control the charging and discharging process of the battery system. The fuse is used for system protection. When the system has an overcurrent or short circuit fault, the fuse blows to achieve a protective effect. The battery pack 3 includes a second outer protective shell, a battery module mounted inside the second outer protective shell, and a BMS slave control module. The BMS slave control module can be wirelessly connected to the BMS main control module, thereby facilitating reading of cell-related data in the battery module. The number of battery packs 3 is not less than two, and a handle is fixedly installed on the top of the second outer protective shell in a single battery pack 3. A groove is provided at the bottom of the second outer protective shell to accommodate the handle. The top of the base assembly 4 is also equipped with an auxiliary handle that can be accommodated in the groove.

[0026] The first docking socket set at the bottom of the power conversion unit 1 can be electrically connected to the first side plug 8 combination, and the second docking socket set at the top of the high-voltage box 2 can be electrically connected to the second side plug 9 combination. The first side plug 8 and the second side plug 9 can be electrically connected through a guide.

[0027] Working principle: Example 1

[0028] When the integrated installation is possible, the power conversion unit 1, the high-voltage box 2, the multiple battery packs 3 and the base assembly 4 are stacked and installed. Specifically, the first docking socket of the power conversion unit 1 and the second docking socket of the high-voltage box 2 are assembled and electrically connected through the transition plug 5, and then the first connector 6 provided on the top of the single battery pack 3 is assembled and electrically connected with the third docking socket at the bottom of the high-voltage box 2. Then, the remaining battery packs 3 are assembled in pairs using their own first connectors 6 and second connectors 7. The last battery pack 3 is assembled and electrically connected with the first side plug 8 of the base assembly 4 using the second connector 7 at the bottom, thereby meeting the requirements of integrated and convenient assembly.

[0029] During use, the BMS slave control module collects the cell voltage and temperature data of each battery pack 3, and then transmits it to the BMS master control module. The BMS master control module then collects the loop current data by controlling the shunt, thereby controlling the charging and discharging process of the battery system, and using the fuse for system protection. When the system has an overcurrent or short circuit fault, the fuse blows to achieve a protective effect, thereby fully controlling the battery module. Example 2

[0030] When the installation space is limited, and the height or space is restricted, the power conversion unit 1, the high-voltage box 2, multiple battery packs 3 and the base assembly 4 are stacked and installed. Specifically, the first docking socket of the power conversion unit 1 is electrically connected to the first side plug 8, the second docking socket of the high-voltage box 2 is electrically connected to the second side plug 9, and the first side plug 8 and the second side plug 9 are electrically connected through a wire. Then, the first connector 6 set on the top of the single battery pack 3 is assembled and electrically connected to the third docking socket at the bottom of the high-voltage box 2. Then, the remaining battery packs 3 are assembled in pairs using their own first connectors 6 and second connectors 7. The last battery pack 3 is assembled and electrically connected using the second connector 7 at the bottom and the first side plug 8 of the base assembly 4, thereby meeting the requirements of integrated and convenient assembly.

[0031] During use, the BMS slave control module collects the cell voltage and temperature data of each battery pack 3, and then transmits it to the BMS master control module. The BMS master control module then collects the loop current data by controlling the shunt, thereby controlling the charging and discharging process of the battery system, and using the fuse for system protection. When the system has an overcurrent or short circuit fault, the fuse blows to achieve a protective effect, thereby fully controlling the battery module.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. At the same time, in the drawings of the present utility model, fill patterns are only used to distinguish layers and do not make any other limitations.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A household energy storage system, comprising a power conversion unit (1), a high-voltage box (2), a battery pack (3), a base assembly (4), a first side plug (8), and a second side plug (9), characterized in that: The power conversion unit (1) and the high-voltage box (2), the battery pack (3), and the base assembly (4) can be stacked and installed in sequence. The bottom of the power conversion unit (1) and the top of the high-voltage box (2) are respectively provided with a first docking socket and a second docking socket. The bottom of the high-voltage box (2) is provided with a third docking socket. The top and bottom of the battery pack (3) are respectively provided with a first connector (6) and a second connector (7). A single first connector (6) and a single second connector (7) can be electrically connected. The first connector (6) can be electrically connected to the third docking socket. A first side plug (8) that can be electrically connected to the second connector (7) is installed on the top of the base assembly (4). A transition plug (5) is electrically connected between the first docking socket and the second docking socket.

2. A household energy storage system according to claim 1, characterized in that: An external output interface is provided on one side of the power conversion unit (1), and the specific structure of the power conversion unit (1) is an inverter or a charging module structure. An external interface is provided on one side of the power conversion unit (1), and limiting angle plates installed on the top of the high-voltage box (2) are clamped in the structures on both sides of the bottom of the power conversion unit (1).

3. A household energy storage system according to claim 1, characterized in that: The high-voltage box (2) comprises a first outer protective shell, a BMS main control module, a fuse component, and a shunt which are sleeved inside the first outer protective shell.

4. A household energy storage system according to claim 3, characterized in that: The battery pack (3) comprises a second outer protective shell, a battery module mounted inside the second outer protective shell, and a BMS slave control module, wherein the BMS slave control module can be wirelessly connected to the BMS master control module.

5. The household energy storage system according to claim 1, characterized in that: The number of battery packs (3) provided is no less than two, and a handle is fixedly mounted on the top of the second outer protective shell in a single battery pack (3), a groove capable of receiving the handle is provided at the bottom of the second outer protective shell, and an auxiliary handle capable of being received in the groove is also installed on the top of the base assembly (4).

6. A household energy storage system according to claim 1, characterized in that: The first docking socket provided at the bottom of the power conversion unit (1) can be electrically connected to the first side plug (8) combination, the second docking socket provided at the top of the high-voltage box (2) can be electrically connected to the second side plug (9) combination, and the first side plug (8) and the second side plug (9) can be electrically connected through a guide.

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