A combined modular household energy storage system

Abstract

The present invention provides a combined modular household energy storage system, which belongs to the technical field of energy storage systems. It includes an inverter, a battery box and a base, wherein the inverter, battery box and base are detachably connected in sequence from top to bottom, and further includes a vertically arranged side panel assembly, wherein the two ends of the inverter, battery box and base are respectively fixedly connected to the side panel assembly. The present invention makes full use of the modular design, wherein the battery box and the inverter can be configured according to the system combination, and the single module design can be packaged and transported separately, which is convenient for installation, transportation and later expansion.

Description

Technical Field

[0001] The invention belongs to the technical field of energy storage systems and relates to a combined modular household energy storage system. Background Art

[0002] With the large-scale application and development of photovoltaic power generation systems and battery energy storage systems (especially lithium batteries), household energy storage systems have gradually become popular. Household energy storage systems mainly include battery boxes and inverters. In the prior art, household energy storage systems are generally divided into integrated cabinet type and independent separation type: the integrated cabinet type is to install the battery box and inverter in the same cabinet; the independent separation type is to install the battery box and inverter independently and then connect them electrically. The integrated cabinet system is large in size and heavy in overall weight, which is not convenient for transportation and installation, and it is difficult to expand the system later. In the independent separation system, the inverter is generally wall-mounted and the battery box is floor-mounted, and the system connection and installation are relatively cumbersome.

[0003] On the other hand, household energy storage systems are often used in earthquake-prone areas as backup power sources. In the prior art, earthquake protection is generally carried out by improving the safety of battery cells. However, it is difficult to pass the needle puncture test in the battery cell safety test. In order to ensure the safety of the system, it is necessary to improve the firmness of the shell to prevent the battery cell from being damaged and causing safety accidents. Summary of the invention

[0004] The object of the present invention is to provide a combined modular household energy storage system in order to solve the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A combined modular household energy storage system includes an inverter, a battery box and a base, wherein the inverter, battery box and base are detachably connected in sequence from top to bottom, and further includes a vertically arranged side panel assembly, wherein the two ends of the inverter, battery box and base are respectively fixedly connected to the side panel assembly.

[0007] In the above-mentioned combined modular household energy storage system, the side panel assembly includes a left panel and a right panel, and the left panel and the right panel are respectively provided with a plurality of connection holes arranged along the axial direction of the left panel and the right panel, and the connection holes correspond to the positions of the inverter, the battery box and the base. After the locking piece passes through the connection holes, the left panel and the right panel are respectively fixedly connected with the inverter, the battery box and the base.

[0008] In the above-mentioned combined modular household energy storage system, a plurality of reinforcing ribs are provided on the left and right panels, and connection holes are provided on the reinforcing ribs. The left and right panels are fixedly connected to the inverter, the battery box and the two ends of the base through the connection holes.

[0009] In the above-mentioned combined modular household energy storage system, the inverter, battery box and base are respectively provided with inverter fixing holes, battery box fixing holes and base fixing holes at both ends thereof, which are matched with the connection holes on the left plate and the right plate.

[0010] In the above-mentioned combined modular household energy storage system, a base mounting hole is provided at the bottom of the base, a base locating pin is provided at the top of the base, a battery box locating hole matching the base locating pin is provided at the bottom of the battery box, and when the battery box is placed on the base, the base locating pin is inserted into the battery box locating hole, a battery box locating pin is provided at the top of the battery box, and an inverter locating hole matching the battery box locating pin is provided at the bottom of the inverter, and when the inverter is placed on the battery box, the battery box locating pin is inserted into the inverter locating hole.

[0011] In the above-mentioned combined modular household energy storage system, there are two base locating pins located on both sides of the center line of the base, there are two battery box locating holes and two battery box locating pins located on both sides of the center line of the battery box, and there are two inverter locating holes located on both sides of the center line of the inverter.

[0012] In the above-mentioned combined modular household energy storage system, the two base locating pins are arranged along the diagonals of the base, the two battery box locating holes and the two battery box locating pins are respectively arranged along the diagonals of the battery box, and the two inverter locating holes are respectively arranged along the diagonals of the inverter.

[0013] In the above-mentioned combined modular household energy storage system, a plurality of battery box waterproof connectors are provided on one end of the battery box close to the left side panel, and an external interface board is provided on the right side panel.

[0014] In the above-mentioned combined modular household energy storage system, a plurality of inverter waterproof connectors are provided at one end of the inverter close to the left side panel, a plurality of waterproof connectors are provided at one end of the inverter close to the right side panel, a top cover is detachably provided on the top of the inverter, an indicator light is provided on one side wall of the inverter, and a radiator is provided on the other side wall.

[0015] In the above-mentioned combined modular household energy storage system, a plurality of battery boxes are provided between the inverter and the base, and the plurality of battery boxes are stacked in sequence from top to bottom to form a detachable connection, the top of the battery box at the top is fixedly connected to the bottom of the inverter, and the bottom of the battery box at the bottom is fixedly connected to the top of the base.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The present invention makes full use of modular design. The battery box and the inverter can be configured according to the system combination. The single module design can be packaged and transported, which is convenient for installation, transportation and later expansion.

[0018] 2. The battery box and inverter are installed in a stacked manner, eliminating the tediousness of separate installation and making system connection more convenient; the left and right side panels are high-strength pressure-resistant structures that can withstand the squeezing of heavy objects after an earthquake disaster, thereby improving the safety of the system.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the other direction;

[0022] Figure 3 It is another structural schematic diagram of the present invention;

[0023] Figure 4 is an exploded view of the present invention;

[0024] Figure 5 yes Figure 4 Schematic diagram of the other direction;

[0025] Figure 6 yes Figure 4 Schematic diagram of the other direction.

[0026] In the figure, battery box 100, battery box positioning hole 101, battery box positioning pin 102, battery box fixing hole 103, battery box waterproof connector 104, inverter 200, inverter positioning hole 201, inverter fixing hole 202, inverter waterproof connector 203, indicator light 204, waterproof connector 205, radiator 206, top cover 207, base 300, base mounting hole 301, base fixing hole 302, base positioning pin 303, left side plate 400, right side plate 500, external interface board 501, etc. DETAILED DESCRIPTION

[0027] like Figure 1 As shown, a combined modular household energy storage system includes an inverter 200, a battery box 100 and a base 300, wherein the inverter 200, the battery box 100 and the base 300 are detachably connected in sequence from top to bottom, and further include a vertically arranged side panel assembly, wherein the two ends of the inverter 200, the battery box 100 and the base 300 are respectively fixedly connected to the side panel assembly.

[0028] The present invention adopts a modular design. The single-module design can be packaged and transported, which is convenient for installation, transportation and later expansion. The battery box 100 and the inverter 200 are stacked and installed, eliminating the tediousness of separate installation and making system connection more convenient.

[0029] The battery box 100 and the inverter 200 can be configured according to the system combination, such as Figure 3 As shown, a plurality of battery boxes 100 are arranged between the inverter 200 and the base 300. The plurality of battery boxes 100 are stacked one after another from top to bottom to form a detachable connection. The top of the battery box 100 located at the top is fixedly connected to the bottom of the inverter 200, and the bottom of the battery box 100 located at the bottom is fixedly connected to the top of the base 300. In the embodiment, the capacity and quantity of the battery box 100 and the power size of the inverter 200 can be combined and configured according to application requirements. Figure 2 It is shown that three battery boxes 100 are stacked on each other, but it does not mean that only three battery boxes can be stacked, and two, four or more battery boxes can also be stacked.

[0030] In this embodiment, combined with Figure 2 As shown, the side panel assembly includes a left side panel 400 and a right side panel 500, and the left side panel 400 and the right side panel 500 are respectively provided with a plurality of connection holes arranged along the axial direction of the left side panel 400 and the right side panel 500, and the connection holes correspond to the positions of the inverter 200, the battery box 100 and the base 300, and the locking members pass through the connection holes to form a fixed connection between the left side panel 400 and the right side panel 500 and the inverter 200, the battery box 100 and the base 300, respectively. The locking members can be screws, bolts or the like, and screw holes corresponding to the connection holes are provided at both ends of the inverter 200, the battery box 100 and the base 300 for connection.

[0031] Recombination Figure 4 and Figure 5 As shown, the left side plate 400 and the right side plate 500 are provided with a plurality of reinforcing ribs, which are also support columns, and are used to improve the strength of the left side plate and the right side plate, and play a role in earthquake resistance. The reinforcing ribs significantly improve the strength of the entire side plate assembly, thereby making the entire system more stable. Connection holes are provided on the reinforcing ribs, and the left side plate 400 and the right side plate 500 are fixedly connected to the inverter 200, the battery box 100 and the two ends of the base 300 through the connection holes.

[0032] Specifically, Figure 4 and Figure 5As shown, the inverter 200, the battery box 100 and the base 300 are respectively provided with an inverter fixing hole 202, a battery box fixing hole 103 and a base fixing hole 302 which are matched with the connection holes on the left side plate 400 and the right side plate 500. The inverter fixing hole 202, the battery box fixing hole 103 and the base fixing hole 302 are all threaded holes, which are convenient for connecting with the left side plate and the right side plate by using threaded parts. It should be understood by those skilled in the art that the connection holes on the left side plate and the right side plate, as well as the positions and numbers of the inverter fixing holes 202, the battery box fixing holes 103 and the base fixing holes 302 can be set according to actual conditions, in order to achieve connection. The number of the connection holes is greater than the number of the inverter fixing holes 202, the battery box fixing holes 103 and the base fixing holes 30, which is convenient for the expansion of the battery box in the later stage.

[0033] The base 300 has a base mounting hole 301 at the bottom, which is fixed to the ground anchor bolts for fixing the entire household energy storage system. The base 300 has a base positioning pin 303 at the top, and the battery box 100 has a battery box positioning hole 101 matching the base positioning pin 303 at the bottom. When the battery box 100 is placed on the base 300, the base positioning pin 303 is inserted into the battery box positioning hole 101. The battery box 100 has a battery box positioning pin 102 at the top, and the inverter 200 has an inverter positioning hole 201 matching the battery box positioning pin 102 at the bottom. When the inverter 200 is placed on the battery box 100, the battery box positioning pin 102 is inserted into the inverter positioning hole 201.

[0034] The positioning holes and positioning pins mentioned above cooperate with each other, and the installation is convenient, so that the base 300, the battery box 100 and the inverter 200 are stacked and installed. After the installation is completed, radial positioning is achieved, and the radial position remains stable.

[0035] In a preferred embodiment, there are two base locating pins 303 and they are located on both sides of the center line of the base 300, there are two battery box locating holes 101 and two battery box locating pins 102 and they are located on both sides of the center line of the battery box 100, and there are two inverter locating holes 201 and they are located on both sides of the center line of the inverter 200.

[0036] In a more preferred solution, two base positioning pins 303 are arranged diagonally along the base 300, the two battery box positioning holes 101 and the two battery box positioning pins 102 are arranged diagonally along the battery box 100, and the two inverter positioning holes 201 are arranged diagonally along the inverter 200. The diagonal arrangement is convenient for alignment and fixing, and is convenient for installation.

[0037] The applicant has found that setting two diagonal positioning holes and positioning pins is the best way. If three or more positioning holes and positioning pins are set, very precise dimensions must be guaranteed during the processing process. Otherwise, the positioning pins and positioning holes will not correspond one to one during installation, and stacking cannot be achieved. The diagonal setting of two positioning holes and positioning pins not only ensures the strength and accuracy of positioning, but also facilitates the adjustment of angles for matching.

[0038] like Figure 5 and Figure 6 As shown, the battery box 100 is provided with a plurality of battery box waterproof connectors 104 at one end close to the left side plate 400, which are used for connecting the positive and negative electrodes of the battery box and for control connection, and the right side plate 500 is provided with an external interface board 501. The external interface board 501 is used for external incoming lines, and can be matched with a wiring protection hose, and the position is not limited.

[0039] The inverter 200 has a plurality of waterproof connectors 203 at one end close to the left side panel 400, which are used for the positive and negative poles of the inverter and the battery box and the control connection. The inverter 200 has a plurality of waterproof connectors 205 at one end close to the right side panel 500, which are used for photovoltaic DC side input, grid side and load AC side output, external communication, etc. The top of the inverter 200 is detachably provided with a top cover 207, which is used for the customer to open the cover on site for system wiring, and close the top cover after the wiring is completed. An indicator light 204 is provided on one of the side walls of the inverter 200, and a radiator 206 is provided on the other side wall for heat dissipation of the power devices of the inverter.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A modular household energy storage system, comprising an inverter (200), a battery box (100) and a base (300), characterized in that: The inverter (200), the battery box (100) and the base (300) are detachably connected in sequence from top to bottom, and further include a side panel assembly arranged vertically, and both ends of the inverter (200), the battery box (100) and the base (300) are respectively fixedly connected to the side panel assembly; The side panel assembly comprises a left side panel (400) and a right side panel (500), wherein the left side panel (400) and the right side panel (500) are respectively provided with a plurality of connection holes arranged along the axial direction of the left side panel (400) and the right side panel (500), wherein the connection holes correspond to the positions of the inverter (200), the battery box (100) and the base (300); The left side plate (400) and the right side plate (500) are provided with a plurality of reinforcing ribs, and connection holes are provided on the reinforcing ribs. The left side plate (400) and the right side plate (500) are respectively fixedly connected to the inverter (200), the battery box (100) and the two ends of the base (300) through the connection holes; The inverter (200), battery box (100) and base (300) are respectively provided with inverter fixing holes (202), battery box fixing holes (103) and base fixing holes (302) matching the connection holes on the left side plate (400) and the right side plate (500) at both ends; The base (300) is provided with a base mounting hole (301) at the bottom, the base (300) is provided with a base positioning pin (303) at the top, the battery box (100) is provided with a battery box positioning hole (101) matching the base positioning pin (303) at the bottom, when the battery box (100) is placed on the base (300), the base positioning pin (303) is inserted into the battery box positioning hole (101), the battery box (100) is provided with a battery box positioning pin (102) at the top, the inverter (200) is provided with an inverter positioning hole (201) matching the battery box positioning pin (102) at the bottom, when the inverter (200) is placed on the battery box (100), the battery box positioning pin (102) is inserted into the inverter positioning hole (201); There are two base positioning pins (303) located on both sides of the center line of the base (300), there are two battery box positioning holes (101) and two battery box positioning pins (102) located on both sides of the center line of the battery box (100), and there are two inverter positioning holes (201) located on both sides of the center line of the inverter (200); The two base positioning pins (303) are arranged diagonally along the base (300), the two battery box positioning holes (101) and the two battery box positioning pins (102) are arranged diagonally along the battery box (100), and the two inverter positioning holes (201) are arranged diagonally along the inverter (200).

2. A combined modular household energy storage system according to claim 1, characterized in that: A plurality of battery box waterproof connectors (104) are provided at one end of the battery box (100) close to the left side plate (400), and an external interface board (501) is provided on the right side plate (500).

3. A combined modular household energy storage system according to claim 1, characterized in that: The inverter (200) is provided with a plurality of inverter waterproof connectors (203) at one end close to the left side plate (400), and a plurality of waterproof connectors (205) are provided at one end close to the right side plate (500). The top of the inverter (200) is provided with a detachable top cover (207). An indicator light (204) is provided on one side wall of the inverter (200), and a heat sink (206) is provided on the other side wall.

4. A combined modular household energy storage system according to claim 1, characterized in that: A plurality of battery boxes (100) are arranged between the inverter (200) and the base (300). The plurality of battery boxes (100) are stacked in sequence from top to bottom to form a detachable connection. The top of the battery box (100) located at the top is fixedly connected to the bottom of the inverter (200), and the bottom of the battery box (100) located at the bottom is fixedly connected to the top of the base (300).

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