Household energy storage device

Abstract

The utility model relates to the technical field of batteries, in particular to a household energy storage device. The household energy storage device aims at solving the problems that in the prior art, a household energy storage device is large in size and low in energy density. The household energy storage device comprises the shell, the battery module and the pressing support, the battery module is slidably installed on the first side plate of the shell body of the shell, the battery module is fixed in the shell body through the pressing support, and the pressing support is located between the battery module and the cover plate of the shell, so that the battery module is easy and convenient to disassemble and assemble. According to the household energy storage device, the battery module is fixed through the side face sliding installation of the battery module and the pressing support, an additional fixing and connecting structure does not need to be arranged between the battery module and the shell, the structure of the household energy storage device is simple, the size of the household energy storage device is reduced, and therefore the installation occupied space is reduced, and the installation cost is reduced. And the energy sealing degree is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a household energy storage device. Background Art

[0002] Household energy storage, also known as home storage, is an important part of distributed energy resources (DER). Household energy storage can reduce household electricity costs and provide emergency backup power, and its applications are increasing.

[0003] Most of the existing household energy storage devices are improved from existing large-scale energy storage devices, which are large in size and low in energy density. Utility Model Content

[0004] The present application provides a household energy storage device to solve the technical problems of large size and low energy density of household energy storage devices in the prior art.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] The present application provides a household energy storage device, comprising: a battery module, a shell and a clamping bracket; the shell comprises a shell and a cover plate, the shell forms a accommodating cavity with an open end, and the cover plate is fixed on the opening of the accommodating cavity; the shell has two first side plates opposite to each other along a first direction, the battery module is slidably mounted on one of the first side plates, and the battery module is constructed to slide from the opening of the accommodating cavity to the interior of the accommodating cavity; the first direction is perpendicular to the sliding direction of the battery module; the clamping bracket is fixed on the battery module, and the clamping bracket is fixed on the shell; the clamping bracket is located between the cover plate and the battery module.

[0007] Compared with the prior art, the household energy storage device provided by this application has the following advantages:

[0008] The household energy storage device provided by the present application includes a shell, a battery module and a clamping bracket. The shell is provided with a housing to form a receiving cavity with an opening at one end to accommodate and install the battery module; the shell is provided with a cover plate and fixed to the open end of the receiving cavity, so that the battery module is enclosed in the shell, making the household energy storage device regular; the battery module can be slidably installed on the first side plate of the shell, and the battery module is fixed in the shell by a clamping bracket, and the clamping bracket is located between the battery module and the cover plate, so that the disassembly and assembly of the battery module is simple and convenient. The household energy storage device of the embodiment of the present application is provided with a separate shell to accommodate the battery module, and the battery module is fixed by the side sliding installation of the battery module and the clamping bracket, without the need to provide an additional fixed connection structure between the battery module and the shell, which not only makes the structure of the household energy storage device simple, but also helps to reduce the volume of the household energy storage device, thereby reducing the installation space, improving the energy sealing degree, and helping to improve the user experience.

[0009] As an improvement of the household energy storage device mentioned above in the present application, a guide rail is provided on one of the first side panels, and the guide rail extends from the opening of the accommodating cavity toward the interior thereof; and a slider matching with the guide rail is provided on the battery module.

[0010] As an improvement of the above-mentioned household energy storage device of the present application, the guide rail includes two guide members, the two guide members are arranged opposite to each other along the second direction, and the two guide members form a sliding cavity; the sliding block is slidably arranged in the sliding cavity; the second direction is perpendicular to the first direction, and the second direction is perpendicular to the sliding direction of the battery module.

[0011] As an improvement of the household energy storage device mentioned above in the present application, reinforcing ribs are respectively arranged on the two first side panels; the clamping bracket includes a first arm and two second arms, the two second arms are spaced apart at both ends of the first arm, the first arm is fixedly connected to the battery module, and the second arm is fixedly connected to the reinforcing ribs.

[0012] As an improvement of the household energy storage device mentioned above in the present application, the household energy storage device further includes a single-module binding strap, and the single-module binding strap is sleeved on the outer side of the battery module.

[0013] As an improvement of the household energy storage device described above in the present application, a plurality of battery modules are provided, and the plurality of battery modules are arranged side by side.

[0014] As an improvement of the household energy storage device mentioned above in the present application, the household energy storage device further includes an end face bracket, which is fixed to two adjacent battery modules and is located at both ends of the battery module along its sliding direction.

[0015] As an improvement of the household energy storage device mentioned above in the present application, the household energy storage device also includes a fastening bracket, which is fixed to the outermost side of the multiple battery modules arranged side by side, and at least a part of the fastening bracket is parallel to the sliding direction of the battery module.

[0016] As an improvement of the above-mentioned household energy storage device of the present application, the battery module has two side surfaces spaced apart and opposite to each other along a second direction; the second direction is perpendicular to the first direction, and the second direction is perpendicular to the sliding direction of the battery module; the fastening bracket includes a main body and an end face fixing portion, the main body is located on the side of the battery module away from other battery modules, and the extension direction of the main body is parallel to the sliding direction of the battery module; the two ends of the main body are bent to the end face of the battery module to form the end face fixing portion, and the end face fixing portion is fixed to the end face of the battery module.

[0017] As an improvement of the household energy storage device described above in the present application, a buffer pad is provided between the inner wall surface of the shell and the battery module.

[0018] In addition to the technical problems solved by the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the household energy storage device provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 An exploded diagram of a household energy storage device provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of an end face of a household energy storage device provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of the guide rail provided in the embodiment of the present application;

[0023] Figure 4A schematic diagram of the structure of the compression bracket provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of a battery module provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of the installation of a household energy storage device provided in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 10: Wall installation; 20: Household energy storage device;

[0028] 100: housing; 110: shell; 111: accommodating cavity; 112: first side plate; 113: second side plate; 120: cover plate; 130: guide rail; 131: guide member; 1311: connecting arm; 1312: limiting arm; 132: sliding cavity; 1321: accommodating portion; 1322: opening portion; 140: reinforcing rib; 150: buffer pad; 160: handle;

[0029] 200: battery module; 201: end face; 202: side face; 210: slider; 211: connection part; 212: limit part; 220: single module binding band; 230: end face bracket; 240: fastening bracket; 241: main body; 242: end face fixing part;

[0030] 300: clamping bracket; 310: first arm; 320: second arm;

[0031] 400: Integrated busbar. DETAILED DESCRIPTION

[0032] An energy storage battery pack refers to a system composed of one or more batteries that is used to store electrical energy and release it when needed. An energy storage battery pack usually includes an upper cover, a box, batteries and their modules, a battery management system, sensors, actuators, circuits, etc. The batteries and their modules are fixed in the box by mounting brackets and are relatively large in size. An energy storage battery pack is a system that can store high energy and charge and discharge in a short time, and is widely used in the energy storage industry.

[0033] Among them, household energy storage, also known as home storage, is an important part of distributed energy resources (DER). Distributed energy supply can save transmission and distribution costs, achieve lower costs, and improve power quality and energy efficiency. For households, electricity costs can be reduced by increasing the proportion of self-generation and self-use, participating in auxiliary services, etc. At the same time, it can serve as an emergency backup power source when the power grid is interrupted by major disasters and other factors, thereby improving the reliability of household power supply; for the power grid, the rapid increase in the proportion of variable renewable energy (VRE) will further widen the difference between the power generation curve and the power consumption curve. The configuration of energy storage can shift electricity in time to assist the power grid in balancing power generation capacity and power demand.

[0034] Most of the existing household energy storage devices are improved from other energy storage forms such as large energy storage devices. However, due to the large storage capacity, numerous battery packs, and large internal space, the existing energy storage devices are large in size and weight. Not only do they take up a large space for installation, but the household energy storage devices are also bulky and have low energy density, which affects the user experience. In addition, the assembly and disassembly of existing household energy storage devices are complicated and cumbersome, which is not conducive to the user's independent disassembly and assembly.

[0035] In view of this, the embodiment of the present application provides a household energy storage device, which includes a housing, a battery module and a clamping bracket, wherein the battery module can be slidably installed on the side of the housing and fixed in the housing by the clamping bracket, which is not only simple to assemble and disassemble, but also has high efficiency in assembly and disassembly. In addition, the battery module is slidably installed in the housing on the side, and the end face clamping bracket is used to realize the installation of the battery module, without the need to set up other additional fixing structures in the housing, which is not only conducive to simplifying the structure of the household energy storage device, but also conducive to reducing the volume of the household energy storage device and improving the energy density.

[0036] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] Figure 1 An exploded diagram of a household energy storage device provided in an embodiment of the present application; Figure 2 This is a schematic end view of a household energy storage device provided in an embodiment of the present application.

[0038] Combination Figure 1 and Figure 2The embodiment of the present application provides a household energy storage device, which includes: a battery module 200, a housing 100 and a clamping bracket 300. The housing 100 provides an installation space for the battery module 200 and the clamping bracket 300. The battery module 200 is an energy storage component for storing electricity; the clamping bracket 300 is used to fix the battery module 200 in the housing 100.

[0039] The housing 100 includes a shell 110 and a cover plate 120. The shell 110 is formed with a receiving cavity 111 with an opening at one end, and the cover plate 120 is fixed on the opening of the receiving cavity 111. The cover plate 120 may be provided with operation buttons, a display screen, etc., to become an operation panel of the household energy storage device, so that the user can know the remaining power, temperature, etc. of the household energy storage device.

[0040] In the embodiment of the present application, the housing 110 is in the shape of a rectangular parallelepiped, so that the household energy storage device has a regular appearance, which is conducive to reducing the volume of the household energy storage device.

[0041] Optionally, the shell 110 is a metal shell with high structural strength, which is beneficial for providing a reliable and stable appearance component for the battery module 200.

[0042] In some embodiments, the housing 110 has two first side plates 112 opposite to each other along a first direction, the battery module 200 is slidably mounted on one of the first side plates 112, and the battery module 200 is configured to slide from the opening of the accommodating cavity 111 to the interior of the accommodating cavity 111. The first direction is perpendicular to the sliding installation direction of the battery module 200.

[0043] Combination Figure 1 The first direction corresponds to the Y-axis direction in the figure, and the battery module 200 is slidably installed in the accommodating cavity 111 along the X-axis direction.

[0044] The housing 110 further includes two second side plates 113 opposite to each other along a second direction, and the second direction is respectively perpendicular to the first direction and the sliding direction of the battery module 200. The second direction corresponds to the Z-axis direction in the figure. The two first side plates 112 and the two second side plates 113 are connected to form a cylindrical structure with two ends open.

[0045] The shell 110 also includes a third side plate, which is fixed to one end of the cylindrical structure. In this way, the two first side plates 112, the two second side plates 113 and the third side plate together form a receiving cavity 111; the other end of the cylindrical structure forms an opening of the receiving cavity 111.

[0046] In the embodiment of the present application, the dimensions of the housing 110 along the X-axis direction and along the Z-axis direction are both greater than the dimensions along the Y-axis direction, so that the housing 110 is a flat structure. The first side plate 112 of the housing 110 has a large area, and the battery module 200 is mounted on the first side plate 112, which is conducive to ensuring the compactness of the structure of the household energy storage device, thereby reducing the volume of the whole device and improving the energy density.

[0047] The battery module 200 includes a plurality of battery cells, which are arranged side by side. For example, the battery module 200 includes eight battery cells, which are arranged side by side along the X-axis direction.

[0048] A heat insulation film may be provided between two adjacent battery cells. For example, the heat insulation film may be a heat insulation glue, or the heat insulation film may have a glue layer, and the two adjacent battery cells are bonded together by the heat insulation film, and the connection method is simple.

[0049] The battery module 200 may further include an end face bracket, which is fixed to both ends of the plurality of battery cells along the X-axis direction, and is used to achieve connection between the battery module 200 and other components.

[0050] The clamping bracket 300 is fixed to the battery module 200. For example, the clamping bracket 300 is fixed to the end bracket of the battery module 200 by fasteners such as screws.

[0051] The clamping bracket 300 is fixed on the shell 110. The clamping bracket 300 can be directly fixed on the shell 110. For example, the clamping bracket 300 is fixed on the two first side plates 112 of the shell 110. The clamping bracket 300 can also be indirectly fixed to the shell 110. For example, a fixing structure is provided on the shell 110, and the clamping bracket 300 is fixed on the fixing structure to achieve a fixed connection with the shell 110.

[0052] In the embodiment of the present application, the freedom of the battery module 200 along its sliding direction is limited by the clamping bracket 300 , thereby reducing the dimensional change of the battery module 200 in its sliding direction, so that the battery module 200 is fixed in the accommodating cavity 111 .

[0053] The clamping bracket 300 of the embodiment of the present application is located between the cover plate 120 and the battery module 200. Such a configuration facilitates the disassembly and assembly of the clamping bracket 300, thereby improving the assembly efficiency of the household energy storage device.

[0054] Continue to refer to Figure 1 The housing 110 is also provided with a handle 160 to facilitate the disassembly and assembly of the household energy storage device. The handle 160 may be a through hole provided on the housing 110, for example, a waist-shaped hole is provided at one end of the second side plate 113 facing the cover plate 120; the handle 160 may also be a protrusion provided on the housing 110 to facilitate the user to hold it.

[0055] The household energy storage device of the embodiment of the present application further includes an integrated busbar 400, which may be an aluminum busbar, a copper busbar, etc. The integrated busbar 400 is used to connect the cells of the battery module 200 in series and to collect signals from the battery module 200. The integrated busbar 400 is disposed on the side of the battery module 200 away from the sliding installation thereof.

[0056] Continue to refer to Figure 1 and Figure 2 In some embodiments, a buffer pad 150 is disposed between the inner wall surface of the shell 110 and the battery module 200 .

[0057] Exemplarily, a buffer pad 150 is provided between the second side plate 113 and the battery module 200. For another example, a buffer pad 150 is provided between the first side plate 112 and the battery module 200, and the first side plate 112 is not slidably connected to the battery module 200. For another example, buffer pads 150 are provided at the four corners of the housing 110, respectively.

[0058] The buffer pad 150 may be in a flat pad shape, or in other shapes, such as an L-shape, etc. The embodiment of the present application does not limit the shape of the buffer pad 150 , as long as it can play the role of elastic buffering.

[0059] The buffer pad 150 may be an elastic rubber pad, foam, etc.

[0060] The embodiment of the present application realizes elastic support of the shell 110 and the battery module 200 by setting a buffer pad 150 between the inner wall surface of the shell 110 and the battery module 200, which not only helps to improve the stability of the connection between the battery module 200 and the shell 110, but also can reduce vibration damage to the battery module 200.

[0061] Through the above arrangement, in the household energy storage device of the embodiment of the present application, the housing 100 forms a receiving cavity 111 with an open end by setting the shell 110 to accommodate and install the battery module 200; the housing 100 is fixed to the open end of the receiving cavity 111 by setting the cover plate 120, so that the battery module 200 is enclosed in the housing 100, so that the household energy storage device is regular; the battery module 200 is slidably installed on the first side plate 112 of the shell 110, and the battery module 200 is fixed in the shell 110 by using the clamping bracket 300, and the clamping bracket 300 is located between the battery module 200 and the cover plate 120, so that the disassembly and assembly of the battery module 200 is simple and convenient. The household energy storage device of the embodiment of the present application is provided with a separate housing 100 to accommodate the battery module 200, and the battery module 200 is fixed by means of the side sliding installation and the clamping bracket 300, without providing an additional fixed connection structure between the battery module 200 and the housing 100, which not only makes the structure of the household energy storage device simple, but also helps to reduce the volume of the household energy storage device, thereby reducing the installation space, improving the energy sealing degree, and helping to improve the user experience.

[0062] Combination Figure 2 A guide rail 130 is provided on one of the first side plates 112 , and the guide rail 130 extends from the opening of the accommodating cavity 111 toward the interior thereof. In the embodiment of the present application, the guide rail 130 extends along the X-axis direction.

[0063] The battery module 200 is provided with a slider 210 that cooperates with the guide rail 130. Through the cooperation between the slider 210 and the guide rail 130, the battery module 200 can be slidably installed and disassembled, thereby making the disassembly and assembly of the household energy storage device simple and convenient.

[0064] The embodiment of the present application not only realizes the sliding installation of the battery module 200 by setting the guide rail 130 on the first side plate 112, but also limits the position of the battery module 200 along the first direction and the second direction. When the clamping bracket 300 is provided, there is no need to set other additional fixing structures between the battery module 200 and the housing 100, which not only makes the structure of the household energy storage device simple, but also helps to reduce the volume of the whole device and improve the energy density. Moreover, setting a longer guide rail 130 on the first side plate 112 can also improve the structural strength of the first side plate 112.

[0065] A sliding cavity 132 is formed on the guide rail 130 to accommodate the slider 210. The cross-sectional shape of the sliding cavity 132 can be T-shaped, dovetail-shaped, etc.

[0066] Figure 3 A schematic diagram of the structure of the guide rail provided in an embodiment of the present application.

[0067] Combination Figure 3In some specific implementations, the guide rail 130 includes two guide members 131, and the two guide members 131 both extend along the X-axis direction.

[0068] The two guide members 131 are arranged opposite to each other along the second direction (corresponding to the Z-axis direction in the figure), and the two guide members 131 form a sliding cavity 132; the slider 210 is slidably arranged in the sliding cavity 132. The second direction is perpendicular to the first direction, and the second direction is perpendicular to the sliding direction of the battery module 200.

[0069] The guide rail 130 of the embodiment of the present application forms a sliding cavity 132 by providing two guide members 131 so that the slider 210 can be slidably installed in the sliding cavity 132 , so that the structure of the guide rail 130 is simple and it is convenient to be installed on the first side plate 112 .

[0070] The guide member 131 may include a connecting arm 1311 and a limiting arm 1312. One end of the connecting arm 1311 is connected to the first side plate 112. For example, the connecting arm 1311 is welded to the first side plate 112. The other end of the connecting arm 1311 is bent and extended toward the inside of the sliding cavity 132 to form the limiting arm 1312. The limiting arms 1312 of the two guide members 131 are arranged opposite to each other.

[0071] The sliding cavity 132 includes a communicating accommodation portion 1321 and an opening portion 1322, wherein the two connecting arms 1311 are opposite to each other and spaced apart along the second direction to form the accommodation portion 1321; the two limiting arms 1312 are opposite to each other and spaced apart along the second direction to form the opening portion 1322. The dimension of the opening portion 1322 along the second direction is smaller than the dimension of the accommodation portion 1321 along the second direction.

[0072] In some embodiments, the connecting arm 1311 is disposed perpendicular to the first side plate 112 , and the limiting arm 1312 is perpendicular to the connecting arm 1311 , so that the cross-sectional shape of the sliding cavity 132 is substantially T-shaped.

[0073] Combination Figure 2 The slider 210 includes a connecting portion 211 and a limiting portion 212 connected to each other, wherein the limiting portion 212 is connected to the battery module 200 through the connecting portion 211, and a size of the limiting portion 212 along the second direction is greater than a size of the connecting portion 211 along the second direction.

[0074] Moreover, the dimension of the limiting portion 212 along the second direction is greater than the dimension of the opening portion 1322 along the second direction, so that the limiting portion 212 is accommodated in the accommodating portion 1321 of the sliding cavity 132 and cannot escape from the accommodating portion 1321 under the restriction of the limiting arm 1312; the connecting portion 211 extends from the opening portion 1322.

[0075] Therefore, the slider 210 and the guide rail 130 of the embodiment of the present application, through the cooperation between the limiting portion 212 and the limiting arm 1312, limit the freedom of the battery module 200 along the first direction (corresponding to the Y-axis direction in the accompanying drawings); through the cooperation between the limiting portion 212 and the connecting arm 1311, limit the freedom of the battery module 200 along the second direction (corresponding to the Z-axis direction in the accompanying drawings), so that the battery module 200 can only slide along the X-axis direction, and cooperate with the clamping bracket 300, so that the battery module 200 is confined in the outer shell 100.

[0076] Continue to refer to Figure 2 In the embodiment of the present application, reinforcing ribs 140 are respectively provided on the two first side panels 112 to improve the structural strength of the shell 110 .

[0077] Exemplarily, the reinforcing ribs 140 are welded to the first side plate 112 .

[0078] The cross-sectional shape of the reinforcing rib 140 can be rectangular, polygonal, etc., which is not limited here.

[0079] One reinforcing rib 140 may be provided on the first side plate 112 , and the structure is simple; a plurality of reinforcing ribs 140 may be provided on the first side plate 112 , and the plurality of reinforcing ribs 140 are spaced apart along the second direction, so as to further improve the structural strength of the shell 110 .

[0080] Exemplarily, two reinforcing ribs 140 are respectively disposed on each first side plate 112 , and the reinforcing ribs 140 on each first side plate 112 are opposite to each other along the first direction.

[0081] In some embodiments, the clamping bracket 300 is fixedly connected to the reinforcing rib 140, for example, the clamping bracket 300 is fixed to the reinforcing rib 140 by fasteners such as screws. In this way, there is no need to set an additional fixing structure on the plate-shaped housing 110, which is conducive to simplifying the structure of the household energy storage device; and the reinforcing rib 140 has a larger size along the sliding direction of the battery module 200, which is conducive to improving the stability of the fixed installation of the clamping bracket 300.

[0082] Figure 4 A schematic diagram of the structure of the compression bracket provided in an embodiment of the present application.

[0083] Combination Figure 4 In some embodiments, the clamping bracket 300 includes a first arm 310 and two second arms 320, and the two second arms 320 are spaced apart at both ends of the first arm 310, wherein the two second arms 320 can be welded to both ends of the first arm 310, or the two second arms 320 and the first arm 310 are an integrally formed one-piece.

[0084] Optionally, the first arm 310 and the second arm 320 may be plate-shaped structures, which is beneficial to reducing the overall volume of the household energy storage device. The first arm 310 and the second arm 320 may be arranged vertically.

[0085] The first arm 310 is fixedly connected to the battery module 200. For example, the first arm 310 is fixedly connected to the battery module 200 by fasteners such as screws. The second arm 320 is fixedly connected to the reinforcing rib 140. For example, the second arm 320 is fixedly connected to the reinforcing rib 140 by fasteners such as screws.

[0086] In the embodiment of the present application, the clamping bracket 300 is fixedly connected to the battery module 200 by setting a first arm 310; and is fixedly connected to the reinforcing rib 140 by setting a second arm 320, thereby achieving a fixed connection between the clamping bracket 300 and the battery module 200 and the shell 110, thereby confining the battery module 200 within the shell 110; and by setting two second arms 320 and the first arm 310, a cross-structured clamping bracket 300 is formed, which is beneficial to improving the structural strength of the clamping bracket 300, thereby ensuring the structural stability of the household energy storage device.

[0087] Figure 5 A schematic diagram of the structure of a battery module provided in an embodiment of the present application.

[0088] Combination Figure 5 In some embodiments, the household energy storage device further includes a single module binding strap 220 , which is sleeved on the outer side of the battery module 200 .

[0089] The single module binding strap 220 may be a metal binding strap, such as a steel binding strap.

[0090] In the embodiment of the present application, a single module binding strap 220 is sleeved on the outer side of the battery module 200 to improve the stability and reliability of the structure of the battery module 200 .

[0091] It is understandable that when the single-module binding band 220 is sleeved on the outside of the battery module 200 , there is a gap between the single-module binding band 220 and the battery module 200 to reserve a gap for thermal expansion of the battery module 200 .

[0092] In order to prevent the single-module binding band 220 from affecting the setting of the integrated busbar 400 , the single-module binding band 220 is arranged on a side perpendicular to the integrated busbar 400 .

[0093] Continue to refer to Figure 5 In the embodiment of the present application, a plurality of battery modules 200 are provided, and the plurality of battery modules 200 are arranged side by side. In the embodiment of the present application, the storage capacity of the household energy storage device is increased by providing a plurality of battery modules 200.

[0094] like Figure 5 As shown, there are two battery modules 200, and the two battery modules 200 are arranged side by side along the second direction. Of course, this is not a limitation on the number of battery modules 200, for example, there may be three or four battery modules 200.

[0095] In some embodiments, the household energy storage device further includes an end bracket 230 , which is fixed to two adjacent battery modules 200 , and is located at both ends of the battery module 200 along its sliding direction (corresponding to the X-axis direction in the figure).

[0096] The battery module 200 has two end surfaces 201 opposite to each other along a first direction, and the end surface bracket 230 is fixed on the end surface 201 .

[0097] The end face bracket 230 can be fixed to the battery module 200 by fasteners such as screws to achieve the connection between two adjacent battery modules 200 and facilitate the sliding installation of multiple battery modules 200.

[0098] Optionally, the end face bracket 230 may be a flat plate structure, which helps to reduce the overall volume of the household energy storage device.

[0099] The household energy storage device of the embodiment of the present application realizes the connection between two adjacent battery modules 200 by providing an end face bracket 230 , thereby facilitating the assembly of multiple battery modules 200 .

[0100] When a plurality of battery modules 200 are provided, the slider 210 may be provided on two adjacent battery modules 200 , which can not only play the role of connecting the two adjacent battery modules 200 , but also realize the sliding installation of the plurality of battery modules 200 .

[0101] In some embodiments, the household energy storage device further includes a fastening bracket 240 , which is fixed to the outermost side of a plurality of battery modules 200 arranged side by side, and at least a portion of the fastening bracket 240 is parallel to the sliding direction of the battery module 200 .

[0102] For example, when there are three battery modules 200 , the fastening brackets 240 are only provided on the two outermost battery modules 200 , and the fastening brackets 240 do not need to be provided on the middle battery module 200 .

[0103] A plurality of battery modules 200 are arranged side by side along the second direction (corresponding to the Z-axis direction in the figure) to form a module unit, and the battery modules 200 at both ends of the module unit along the Z-axis direction are the outermost battery modules 200. The fastening bracket 240 is fixed to the outer side of the battery module 200 away from the inside of the module unit.

[0104] The embodiment of the present application provides a fastening bracket 240 on the outermost battery module 200 to balance the force on the end face bracket 230 at the end of the battery module 200, so that the overall force on the multiple battery modules 200 is balanced, which is beneficial to improving the stability of the structure of the multiple battery modules 200.

[0105] Continue to refer to Figure 5 The battery module 200 has two side surfaces 202 spaced apart and opposite to each other along a second direction (corresponding to the Z-axis direction in the drawings), and the side surfaces 202 are perpendicular to the end surface 201 of the battery module 200 .

[0106] The fastening bracket 240 of the embodiment of the present application includes a main body 241 and an end surface fixing portion 242, the main body 241 is located on the side 202 of the battery module 200 away from other battery modules 200, and the extension direction of the main body 241 is parallel to the sliding direction of the battery module 200. It can be understood that the main body 241 is located on the side 202 of the outermost two battery modules 200.

[0107] Both ends of the main body 241 are bent to the end face 201 of the battery module 200 to form an end face fixing portion 242, and the end face fixing portion 242 is fixedly connected to the end face 201 of the battery module 200. Exemplarily, the end face fixing portion 242 is fixed to the end face 201 of the battery module 200 by fasteners such as screws.

[0108] In some embodiments, the main body 241 and the end surface fixing portion 242 are both in the shape of a flat plate, which helps to improve the structural compactness of the household energy storage device.

[0109] The fastening bracket 240 of the embodiment of the present application restricts the outermost battery module 200 by setting a main body 241, and realizes the fixed connection between the fastening bracket 240 and the battery module 200 through the end face fixing portion 242; and, both the fastening bracket 240 and the end face bracket 230 are connected to the end face 201 of the battery module 200, which is conducive to improving the convenience of assembly.

[0110] The household energy storage device of the embodiment of the present application can be placed directly on the ground.

[0111] The household energy storage device of the embodiment of the present application can also be wall-mounted. Figure 6 ,in, Figure 6 A schematic diagram of the installation of a household energy storage device provided in an embodiment of the present application.

[0112] Combination Figure 6 The household energy storage device 20 is wall-mounted on the installation wall 10. Exemplarily, a hanging ear is welded on the housing of the household energy storage device 20, and the hanging ear is hung on the wall-mounted structure of the installation wall 10.

[0113] When there is a high demand for electricity, multiple household energy storage devices 20 may be arranged, for example Figure 6 As shown, the household energy storage devices 20 are arranged in layers. The connection wiring between the household energy storage devices 20 is arranged on the hanging ears to increase the power consumption.

[0114] Of course, the household energy storage device in the embodiment of the present application is not limited to the above-mentioned installation method.

[0115] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A household energy storage device, characterized in that: include: Battery module, housing and clamping bracket; The housing comprises a shell and a cover plate, the shell is formed with a receiving cavity with an opening at one end, and the cover plate is fixed on the opening of the receiving cavity; The housing has two first side plates opposite to each other along a first direction, the battery module is slidably mounted on one of the first side plates, and the battery module is configured to slide from the opening of the accommodating cavity to the interior of the accommodating cavity; the first direction is perpendicular to the sliding direction of the battery module; The clamping bracket is fixed on the battery module, and the clamping bracket is fixed on the shell; the clamping bracket is located between the cover plate and the battery module.

2. The household energy storage device according to claim 1, characterized in that: A guide rail is provided on one of the first side panels, and the guide rail extends from the opening of the accommodating cavity toward the interior thereof; The battery module is provided with a sliding block matched with the guide rail.

3. The household energy storage device according to claim 2, characterized in that: The guide rail includes two guide members, the two guide members are arranged opposite to each other along the second direction, and the two guide members form a sliding cavity; the sliding block is slidably arranged in the sliding cavity; The second direction is perpendicular to the first direction, and the second direction is perpendicular to the sliding direction of the battery module.

4. The household energy storage device according to claim 1, characterized in that: The two first side panels are respectively provided with reinforcing ribs; The clamping bracket includes a first arm and two second arms, wherein the two second arms are spaced apart at two ends of the first arm, the first arm is fixedly connected to the battery module, and the second arm is fixedly connected to the reinforcing rib.

5. The household energy storage device according to any one of claims 1 to 4, characterized in that: The household energy storage device also includes a single-module binding strap, which is sleeved on the outer side of the battery module.

6. The household energy storage device according to any one of claims 1 to 4, characterized in that: There are multiple battery modules, and the multiple battery modules are arranged side by side.

7. The household energy storage device according to claim 6, characterized in that: The household energy storage device further comprises an end face bracket, which is fixed on two adjacent battery modules and is located at two ends of the battery module along the sliding direction thereof.

8. The household energy storage device according to claim 6, characterized in that: The household energy storage device further comprises a fastening bracket, which is fixed to the outermost side of a plurality of battery modules arranged side by side, and at least a portion of the fastening bracket is parallel to the sliding direction of the battery module.

9. The household energy storage device according to claim 8, characterized in that: The battery module has two side surfaces spaced apart and opposite to each other along a second direction; the second direction is perpendicular to the first direction, and the second direction is perpendicular to the sliding direction of the battery module; The fastening bracket includes a main body and an end face fixing portion, the main body is located on the side of the battery module away from other battery modules, and the extension direction of the main body is parallel to the sliding direction of the battery module; the two ends of the main body are bent to the end face of the battery module to form the end face fixing portion, and the end face fixing portion is fixed to the end face of the battery module.

10. The household energy storage device according to any one of claims 1 to 4, characterized in that: A buffer pad is arranged between the inner wall surface of the shell and the battery module.

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