Energy storage equipment and electric equipment

Abstract

The utility model discloses energy storage equipment and electric equipment. The energy storage device comprises a first battery box and a second battery box. The connecting plug of the first battery box is mounted on the first top surface of the first box body; the connecting section of the mounting seat is fixedly connected with the first top surface; the guide section is connected with one end, back to the first top surface, of the connecting section; the guide section inclines towards the interior of the installation base, and the included angle between the guide section and the center line of the installation base in the first direction is larger than 0 degree and smaller than 90 degrees. The second battery box comprises a second box body and a bayonet socket. The second bottom surface of the second box body is provided with an installation groove, and the bayonet socket is installed in the installation groove. The second box body and the first box body are arranged in a stacked mode in the first direction, the installation base is installed in the installation groove, and the connecting plug is connected to the bayonet socket in an inserted mode and electrically connected with the bayonet socket. The energy storage equipment provided by the utility model can solve the technical problem that the plugging ports of the upper and lower layers of battery boxes are easy to misplace in the installation process of the energy storage equipment in the prior art.

Description

Technical Field

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

[0002] With the continuous development of renewable energy such as wind energy and solar energy, the market demand for battery energy storage devices with electrochemical energy storage and release is also increasing. Battery energy storage devices can convert electrical energy into other forms of energy through physical or chemical means and store it, and convert the energy into electrical energy and release it when needed, so as to meet electricity demand. Battery energy storage devices generally include multiple stacked battery boxes. However, in the prior art, during the stacking of upper and lower battery boxes, the plug-in interface of the upper battery box and the plug-in interface of the lower battery box are prone to misalignment, which increases the difficulty of installing the battery energy storage device. Utility Model Content

[0003] The present application provides an energy storage device and an electrical device to solve the technical problem in the prior art that during the installation of the energy storage device, the plug interfaces of the upper and lower battery boxes are prone to misalignment.

[0004] To solve the above problems, the present application provides an energy storage device, including a first battery box and a second battery box. The first battery box includes a first box body, a plug connector and a mounting seat. The first box body includes a first top surface and a first bottom surface, and the first top surface and the first bottom surface are arranged opposite to each other along a first direction. The plug connector is installed on the first box body and exposes the first top surface. The mounting seat includes a connecting section and a guiding section, the connecting section is fixedly connected to the first top surface, and the guiding section is connected to an end of the connecting section facing away from the first top surface. The guiding section is inclined toward the inside of the mounting seat, and the angle between the guiding section and the center line of the mounting seat along the first direction is greater than 0 degrees and less than 90 degrees. An opening is provided at the end of the guiding section facing away from the first top surface. The mounting seat is arranged around the plug connector, and the opening is arranged opposite to the plug connector along the first direction.

[0005] The second battery box includes a second box body and a socket, the second box body includes a second top surface and a second bottom surface, the second top surface and the second bottom surface are arranged opposite to each other along the first direction, the second bottom surface is provided with a mounting groove, and the socket is installed in the mounting groove. The second box body and the first box body are stacked along the first direction, the second bottom surface faces the first top surface, the mounting seat is installed in the mounting groove, and the plug connector is plugged into the socket and electrically connected to the socket.

[0006] In a possible implementation manner, the first battery box further includes a hanging mount, and the hanging mount is installed on the first top surface and spaced apart from the mounting seat.

[0007] In a possible implementation manner, the second bottom surface is further provided with a receiving groove, and when the second box body and the first box body are stacked, the hanging seat is located in the receiving groove.

[0008] In a possible implementation manner, there are two hanging mounts, and the two hanging mounts are symmetrically arranged about the center of the first top surface.

[0009] In a possible implementation, the first battery box further includes a first battery, which is installed in the first box. The plug connector includes a first end and a second end, the first end and the second end are arranged opposite to each other, the second end is electrically connected to the first battery, and the first end is exposed from the first top surface. An end of the guide section facing away from the connecting section protrudes from the first end, or an end of the guide section facing away from the connecting section is flush with the first end.

[0010] In a possible implementation manner, a cross section of the guide segment perpendicular to the first direction is in a circular shape.

[0011] In a possible implementation manner, a cross section of the guide segment perpendicular to the first direction is a rectangular ring.

[0012] In a possible implementation, the groove side wall of the installation groove includes a first section and a second section, the first section is connected to the second bottom surface, and the second section is connected between the first section and the groove bottom wall of the installation groove. When the second box body is stacked with the first box body, the first section is parallel to and opposite to the connecting section, and the second section is parallel to and opposite to the guiding section.

[0013] In a possible implementation manner, the connecting section is vertically connected to the first top surface, and an angle between the guiding section and the connecting section is greater than 90 degrees and less than 180 degrees.

[0014] In a possible implementation manner, the included angle between the connecting section and the first top surface is greater than 0 degrees and less than 90 degrees, and the included angle between the connecting section and the guiding section is 180 degrees.

[0015] In a possible implementation manner, the second top surface is further provided with a mounting seat and a plug connector. The energy storage device further comprises a third battery box, and the bottom surface of the third battery box is provided with a mounting groove and a plug connector.

[0016] The third battery box is stacked on top of the second battery box, and the mounting seat of the second battery box is installed in the mounting groove of the third battery box, and the plug connector of the second battery box is plugged into the plug connector of the third battery box.

[0017] In a possible implementation, there are multiple third battery boxes, each of which has a mounting seat and a plug connector on its top surface, and a mounting groove and a plug connector on its bottom surface. Multiple third battery boxes are stacked, and the mounting seat of each third battery box is mounted in the mounting groove of the third battery box on the upper layer, and the plug connector of each third battery box is plugged into the plug connector of the third battery box on the upper layer.

[0018] The present application also provides an electric device, which includes the energy storage device described above, and the energy storage device is used to supply power to the electric device.

[0019] In summary, the energy storage device provided by the present application, by setting a guide section on the mounting seat of the first battery box, allows the guide section to play a guiding role during the installation of the second battery box to the first battery box, and can move the mounting slot of the second battery box along the guide section toward the mounting seat, thereby making it easier to install the mounting seat into the mounting slot and allowing the plug connector to be accurately plugged into the connector, thereby improving the connection stability between the second battery box and the first battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

[0021] Figure 1 It is an application scenario diagram of the energy storage device provided in the embodiment of the present application;

[0022] Figure 2 is a schematic diagram of the structure of the energy storage device provided in the embodiment of the present application;

[0023] Figure 3 yes Figure 2 A partial structural schematic diagram of the energy storage device shown;

[0024] Figure 4 yes Figure 3 A schematic structural diagram of a first battery box in the energy storage device shown;

[0025] Figure 5 yes Figure 4 The schematic cross-sectional structure diagram of the first battery box along the AA direction is shown;

[0026] Figure 6 yes Figure 4 An enlarged structural schematic diagram of a first hanging mount in the first battery box is shown;

[0027] Figure 7yes Figure 3 A schematic diagram of the structure of a second battery box in the energy storage device shown;

[0028] Figure 8 yes Figure 7 The schematic diagram of the structure of the second battery box shown in another angle;

[0029] Fig. 9 yes Figure 3 A schematic diagram of a partial cross-sectional structure of the energy storage device shown along the BB direction;

[0030] Fig.10 yes Figure 3 A schematic diagram of a partial cross-sectional structure of the energy storage device shown along the CC direction;

[0031] Fig.11 yes Figure 2 A schematic diagram of a partial structure of a first battery box in the energy storage device shown in another embodiment;

[0032] Fig.12 yes Fig.11 A schematic diagram of the partial structure of the first battery box shown at another angle.

[0033] Description of reference numerals: 500-energy storage system; 200-electric energy conversion device; 300-wind energy conversion device; 400-first user load; 100-energy storage device; 101-base, 102-battery box; 103-high-voltage box; 10-first battery box; 11-first box body; 111-first bottom plate; 112-first top plate; 113-first side plate; 114-first receiving cavity; 104-first top surface; 105-first bottom surface; 115-first through hole; 116-second through hole; 12-first plug connector; 121-first end; 122-second end; 13-first plug socket; 14-first mounting seat; 141-connecting section; 142-guide section; 14 3-protective cavity; 15-first lifting seat; 151-fixing plate; 152-lifting plate; 153-support plate; 154-lifting hole; 155-fixing hole; 17-first mounting groove; 20-second battery box; 21-second box body; 211-second bottom plate; 212-second top plate; 213-second side plate; 215-mounting hole; 106-second top surface; 107-second bottom surface; 22-second plug connector; 23-second plug socket; 24-second mounting seat; 25-second lifting seat; 26-receiving groove; 27-second mounting groove; 271-groove side wall; 272-groove bottom wall; 273-first section; 274-second section; 30-third battery box; 1-bolt. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] Since the energy people need is highly temporal and spatial, in order to rationally utilize energy and improve energy utilization, it is necessary to use a medium or device to store one form of energy in the same form or convert it into another form of energy, and then release it in a specific form of energy based on future application needs. As we all know, to achieve the goal of carbon neutrality, the main way to generate green electricity is to develop green energy such as photovoltaics and wind power to replace fossil energy. At present, the generation of green electricity generally relies on photovoltaics, wind power, water potential, etc., while wind and solar energy generally have strong intermittent and volatile problems, which will cause instability in the power grid, insufficient electricity during peak hours, too much electricity during low hours, and unstable voltage will also cause damage to electricity. Therefore, it may cause "wind and light abandonment" problems due to insufficient electricity demand or insufficient grid acceptance capacity. To solve these problems, we must rely on energy storage. That is, electrical energy is converted into other forms of energy through physical or chemical means and stored, and then the energy is converted into electrical energy and released when needed. Simply put, energy storage is like a large "power bank". When photovoltaic and wind energy are sufficient, electrical energy is stored, and the stored electricity is released when needed.

[0036] Taking electrochemical energy storage as an example, this solution provides an energy storage device 100 (such as Figure 1 As shown), the energy storage device 100 is provided with a chemical battery, which mainly uses the chemical elements in the chemical battery as the energy storage medium. The charging and discharging process is accompanied by the chemical reaction or change of the energy storage medium. In simple terms, the electric energy generated by wind energy and solar energy is stored in the chemical battery, and when the use of external electric energy reaches a peak, the stored electricity is released for use, or transferred to a place where electricity is scarce for use.

[0037] At present, energy storage (i.e. energy storage) has a wide range of application scenarios, including (wind and solar) power generation side energy storage, grid side energy storage, base station side energy storage and user side energy storage. The corresponding types of energy storage devices include:

[0038] (1) Large energy storage containers used in grid-side energy storage scenarios can serve as high-quality active and reactive power regulation power sources in the grid, achieve load matching of electric energy in time and space, enhance the ability to absorb renewable energy, and are of great significance in grid system backup, relieving peak load power supply pressure, and peak and frequency regulation;

[0039] (2) Small and medium-sized energy storage cabinets used in industrial and commercial energy storage scenarios (banks, shopping malls, etc.) on the user side mainly operate in the "peak shaving and valley filling" mode. Since there is a large price difference in electricity charges at peak and valley locations according to electricity demand, after users have energy storage devices 100, in order to reduce costs, they usually charge the energy storage cabinets / boxes during the low electricity price period; during the peak electricity price period, the electricity in the energy storage device 100 is discharged for use to achieve the purpose of saving electricity costs.

[0040] The energy storage device 100 is usually used in the form of energy storage containers, small and medium-sized energy storage cabinets, small household energy storage boxes, etc., and the energy storage containers, small and medium-sized energy storage cabinets, small household energy storage boxes, etc., contain the energy storage device 100. It should be noted that the above-mentioned energy storage containers, small and medium-sized energy storage cabinets, small household energy storage boxes, etc., which contain the energy storage device 100, can be understood as electrical equipment.

[0041] See also Figure 1 , Figure 1 : is an application scenario diagram of the energy storage device 100 provided in an embodiment of the present application. The embodiment of the present application takes the household energy storage scenario in user-side energy storage as an example for explanation, and the energy storage device 100 of the present application is not limited to the household energy storage scenario.

[0042] The present application provides a household energy storage system 500, which includes an electric energy conversion device 200 (photovoltaic panel), a wind energy conversion device 300 (windmill), a first user load 400 (base station), a second user load (not shown) (industrial and commercial side), etc. and an energy storage device 100, the energy storage device 100 also includes an energy storage cabinet, and the energy storage device 100 is installed in the energy storage cabinet for easy installation outdoors. Specifically, the electric energy conversion device 200 can convert solar energy into electric energy during the period of low electricity prices, and the energy storage device 100 is used to store the electric energy and supply it to the base station and the industrial and commercial side for use when the electricity price is peak, or to supply power when the power grid is off / power outage. The wind energy conversion device 300 (windmill) can convert wind energy into electric energy, and the energy storage device 100 is used to store the electric energy and supply it to the base station and the industrial and commercial side for use when the electricity price is peak, or to supply power when the power grid is off / power outage. Among them, the transmission of electric energy can be transmitted using high-voltage cables.

[0043] See also Figure 2 and Figure 3 , Figure 2 is a schematic diagram of the structure of the energy storage device 100 provided in an embodiment of the present application, Figure 3 yes Figure 2 A partial structural schematic diagram of the energy storage device 100 is shown.

[0044] The energy storage device 100 includes a base 101, a battery box 102 and a high-voltage box 103. There are multiple battery boxes 102. The multiple battery boxes 102 are stacked along the height direction of the energy storage device 100 and fixedly connected to each other. The "multiple" here refers to two or more. In this embodiment, there are three battery boxes 102. The three battery boxes 102 are stacked in sequence along the height direction of the energy storage device 100 and installed on the top of the base 101. That is, the battery box 102 of the bottom layer is installed on the base 101 and fixedly connected to the base 101. The high-voltage box 103 is installed on the top of the battery box 102 of the top layer and is fixedly connected to the battery box 102 of the top layer.

[0045] For ease of description, in the embodiment of the present application, the height direction of the energy storage device 100 is defined as the first direction, that is, the Z direction; the length direction of the energy storage device 100 is defined as the second direction, that is, the X direction; and the width direction of the energy storage device 100 is defined as the third direction, that is, the Y direction. The first direction, the second direction, and the third direction are mutually perpendicular, that is, the X direction, the Y direction, and the Z direction are mutually perpendicular.

[0046] The multiple battery boxes 102 are stacked along the Z direction. It should be noted that the directional terms such as "top" and "bottom" used in the embodiments of the present application are mainly based on the energy storage device 100 on the surrounding Figure 2 The display orientation is explained in detail, with the positive direction of the Z axis being the “top” and the negative direction of the Z axis being the “bottom”, which does not constitute a limitation on the orientation of the energy storage device 100 in actual application scenarios.

[0047] like Figure 3 As shown, two battery boxes 102 of the energy storage device 100 are respectively a first battery box 10 and a second battery box 20. The first battery box 10 and the second battery box 20 are stacked along the Z direction. The first battery box 10 is fixedly connected to the second battery box 20 and is electrically connected.

[0048] Please combine Figure 4 and Figure 5 , Figure 4 yes Figure 3 The schematic diagram of the structure of the first battery box 10 in the energy storage device 100 is shown, Figure 5 yes Figure 4 The cross-sectional structure diagram of the first battery box 10 along the AA direction is shown.

[0049] The first battery box 10 includes a first box body 11, a first battery (not shown), a first hanging seat 15, a first mounting seat 14, a first plug connector 12 and a first plug socket 13. The first box body 11 includes a first bottom plate 111, a first top plate 112 and a first side plate 113. The first top plate 112 and the first bottom plate 111 are arranged opposite to each other along the Z direction. The first side plate 113 is arranged around the first bottom plate 111 and is fixedly connected to the first bottom plate 111 and the first top plate 112. The first top plate 112, the first bottom plate 111 and the first side plate 113 are jointly enclosed to form a first receiving cavity 114. The first top plate 112 includes a first top surface 104, and the first bottom plate 111 includes a first bottom surface 105. The first top surface 104 and the first bottom surface 105 are arranged opposite to each other along the Z direction and are located outside the first receiving cavity 114. It can be understood that the first top surface 104 is the surface of the first box body 11 facing the positive direction of the Z axis, and the first bottom surface 105 is the surface of the first box body 11 facing the negative direction of the Z axis.

[0050] The first battery includes one or more battery modules. The first battery is installed in the first receiving cavity 114 and is electrically connected to the first plug connector 12 and the first plug socket 13 through a wire.

[0051] The first plug connector 12 includes a first end 121 and a second end 122. The first end 121 and the second end 122 are arranged opposite to each other and are respectively located at opposite ends of the first plug connector 12 in the Z direction. The first top plate 112 is provided with a first through hole 115. The first plug connector 12 is installed in the first through hole 115 and is fixedly connected to the first top plate 112. Among them, the second end 122 extends toward the first receiving cavity 114 and is electrically connected to the first battery. The first end 121 is exposed from the first top surface 104 by the first through hole 115 and is used to be electrically connected to the second battery box 20.

[0052] The first bottom plate 111 is provided with a second through hole 116. The first socket 13 is installed in the second through hole 116 and is fixedly connected to the first bottom plate 111. One end of the first socket 13 extends toward the first receiving cavity 114 and is electrically connected to the first battery. The other end of the first socket 13 is exposed from the second through hole 116 and is used to be electrically connected to the electrical connection terminal provided on the base 101.

[0053] The first plug connector 12 may also be referred to as the plug connector of the first battery box 10, and the first socket 13 may also be referred to as the socket of the first battery box 10. The first plug connector 12 and the first socket 13 are the positive and negative poles of the first battery box 10, respectively. Exemplarily, the first plug connector 12 is the positive pole of the first battery box 10, and the first socket 13 is the negative pole of the first battery box 10. The current of the first battery box 10 flows out from the first plug connector 12, and flows back to the first battery box 10 from the first socket 13 after passing through other electrical devices, thereby forming a current loop. In other embodiments, the first plug connector 12 may also be the negative pole of the first battery box 10, and the first socket 13 may be the positive pole of the first battery box 10.

[0054] Please continue reading Figure 4 , the first mounting seat 14 can also be called the mounting seat of the first battery box 10. In this embodiment, the first mounting seat 14 is an annular cylindrical structure. The first mounting seat 14 has a center line P. The center line P passes through the center of the first mounting seat 14 and is parallel to the Z direction. It can be understood that the first mounting seat 14 is rotationally symmetric about the center line P.

[0055] The first mounting seat 14 includes a connecting section 141 and a guide section 142. The guide section 142 is connected to the connecting section 141 along the Z direction. The guide section 142 is an inclined surface, and the guide section 142 is inclined toward the inside of the first mounting seat 14. In this embodiment, the connecting section 141 is an elliptical ring, and the guide section 142 is roughly a circular ring. In other embodiments, the connecting section 141 and the guide section 142 can also be circular rings. Alternatively, the first mounting seat 14 can also be a square ring, or other ring structures.

[0056] The first mounting seat 14 is fixed to the top surface of the first top plate 112, that is, the first mounting seat 14 is fixed to the first top surface 104. And it is arranged around the periphery of the first plug connector 12 of the first battery box 10. Among them, the end of the connecting section 141 away from the guide section 142 is fixedly connected to the first top surface 104. The guide section 142 is inclined toward the direction of the first plug connector 12, and the angle between the guide section 142 and the center line P is an acute angle. That is, the angle between the guide section 142 and the center line P is greater than 0 degrees and less than 90 degrees. In this embodiment, the connecting section 141 is vertically connected to the first top surface 104. It can be understood that the angle between the connecting section 141 and the guide section 142 is an obtuse angle.

[0057] In other embodiments, the angle between the connecting section 141 and the guiding section 142 may also be 180 degrees. That is, the connecting section 141 and the guiding section 142 are connected in a straight line. In this case, the angle between the connecting section 141 and the center line P is equal to the angle between the guiding section 142 and the center line P. That is, the angle between the connecting section 141 and the center line P and the angle between the guiding section 142 and the center line P are both greater than 0 degrees and less than 90 degrees, thereby simplifying the structure of the first mounting seat 14.

[0058] like Figure 4 and Figure 5 As shown, the orthographic projection of the first mounting seat 14 along the Z direction is completely outside the first plug connector 12, and has no overlapping part with the first plug connector 12. That is, the first mounting seat 14 and the first plug connector 12 are completely misaligned along the Z direction. It can be understood that the first mounting seat 14 encloses a protective cavity 143 with an opening. The protective cavity 143 and the opening are arranged opposite to the first plug connector 12 along the Z direction. In addition, the portion of the first plug connector 12 that is exposed from the first top plate 112 is located in the protective cavity 143 and is exposed by the opening of the protective cavity 143. In this embodiment, the first plug connector 12 can be protected by providing the first mounting seat 14.

[0059] In the present embodiment, the top of the first mounting seat 14 is flush with the first end 121. That is, the distance from the top of the first mounting seat 14 to the first top surface 104 is equal to the distance from the first end 121 to the first top surface 104. The "top of the first mounting seat 14" refers to the end of the guide section 142 facing away from the connecting section 141, that is, the end of the first mounting seat 14 away from the first top plate 112. In the present embodiment, by setting the top of the first mounting seat 14 to be flush with the first end 121, the first plug connector 12 of the first battery box 10 can be prevented from being exposed outside the first mounting seat 14, thereby enhancing the protection of the first plug connector 12 and preventing the first plug connector 12 from being damaged by external forces.

[0060] In other embodiments, the top of the first mounting seat 14 may also protrude from the first end 121 to further enhance the protective effect of the first mounting seat 14 on the first plug connector 12 of the first battery box 10. That is, the distance from the top of the first mounting seat 14 to the first top surface 104 is greater than the distance from the first end 121 to the first top surface 104. In other words, the top of the first mounting seat 14 is located on the side of the first end 121 away from the first top plate 112.

[0061] See also Figure 6 , Figure 6 yes Figure 4 An enlarged structural schematic diagram of the first hanging mount 15 in the first battery box 10 is shown.

[0062] Among them, the first hanging seat 15 can also be called the hanging seat of the first battery box 10. The first hanging seat 15 includes a fixing plate 151, a hanging plate 152 and a support plate 153. In this embodiment, the fixing plate 151 and the hanging plate 152 are both rectangular. In addition, the fixing plate 151 and the hanging plate 152 are vertically connected. The hanging plate 152 is provided with a hanging hole 154 and a fixing hole 155. The hanging hole 154 and the fixing hole 155 are arranged at intervals along the length direction of the hanging plate 152. Among them, the hanging hole 154 is used to connect with the hanging rope of the hanging equipment to realize the hanging of the first battery box 10. The fixing hole 155 is used to install the bolt 1 to realize the fixed connection with the second battery box 20.

[0063] In this embodiment, there are two lifting holes 154 and two fixing holes 155. The two lifting holes 154 are spaced apart along the length direction of the lifting plate 152, and are symmetrically arranged relative to the center of the lifting plate 152 to ensure the force balance of the first battery box 10. The two fixing holes 155 are respectively located on opposite sides of the two lifting holes 154, and are spaced apart from the two lifting holes 154. In other embodiments, the lifting hole 154 can be one, three, or more than four. There is no specific restriction on the number of lifting holes 154 here, as long as it can adapt to the lifting equipment. The fixing hole 155 can also be one, three, or more than four.

[0064] Among them, the support plate 153 is a right triangle. One of the right-angled sides of the support plate 153 is connected to the hanging plate 152, and the other right-angled side is connected to the fixed plate 151. In this embodiment, there are two support plates 153. The two support plates 153 are respectively connected to the opposite ends of the length direction of the fixed plate 151 and the hanging plate 152. In order to further enhance the supporting effect of the hanging plate 152, another support plate 153 can be added between the support plates 153 at both ends. Alternatively, two or more support plates 153 can be added between the support plates 153 at both ends.

[0065] In this embodiment, by providing a support plate 153 between the fixing plate 151 and the hanging plate 152, the hanging plate 152 can be supported and fixed, the deformation of the hanging plate 152 can be reduced or avoided, and the structural stability of the first hanging seat 15 is improved. At the same time, in this embodiment, by providing the support plate 153 in a triangular structure, the structural stability of the first hanging seat 15 can be further improved.

[0066] In this embodiment, the hanging plate 152 is an integrally formed part. For example, the hanging plate 152 can be obtained by die casting.

[0067] like Figure 4As shown, the fixing plate 151 of the first hanging seat 15 is fixed to the first top surface 104. Specifically, the fixing plate 151 can be welded to the first top plate 112, or can be fixedly connected to the first top plate 112 by bolts 1. In this embodiment, there are two first hanging seats 15. The two first hanging seats 15 are respectively fixed to the two opposite edges of the first top plate 112 in the X direction, and are symmetrically arranged relative to the center of the first top plate 112. In addition, the two first hanging seats 15 are both located at the center position of the first top plate 112 along the Y direction. That is, the center of the first hanging seat 15 along the Y direction is located on the center line of the top plate along the X direction. Among them, the center line of the first top plate 112 along the X direction refers to a straight line passing through the center of the first top plate 112 and parallel to the X direction.

[0068] In this embodiment, by symmetrically arranging two first hanging seats 15 along the X direction on the first box body 11, it can be ensured that during the hanging process, the first battery box 10 is subjected to uniform force along the X direction. In addition, in this embodiment, by arranging the first hanging seat 15 at the center position of the first top plate 112 along the Y direction, it can be ensured that during the hanging process, the first battery box 10 is subjected to uniform force along the Y direction, so that the first battery box 10 is subjected to uniform force during the hanging process, and the stability of the first battery box 10 during the hanging process is improved.

[0069] See also Figure 7 and Figure 8 , Figure 7 yes Figure 3 The schematic diagram of the structure of the second battery box 20 in the energy storage device 100 is shown. Figure 8 yes Figure 7 The schematic diagram of the structure of the second battery box 20 is shown at another angle.

[0070] The second battery box 20 includes a second box body 21, a second battery, a second hanging seat 25, a second plug connector 22 and a second plug seat 23. The second box body 21 includes a second bottom plate 211, a second top plate 212 and a second side plate 213. The second top plate 212 and the second bottom plate 211 are arranged opposite to each other along the Z direction. The second side plate 213 is arranged around the second bottom plate 211 and is fixedly connected to the second bottom plate 211 and the second top plate 212. The second top plate 212, the second bottom plate 211 and the second side plate 213 are enclosed together to form a second receiving cavity (not shown). The second top plate 212 includes a second top surface 106, and the second bottom plate 211 includes a second bottom surface 107. The second top surface 106 and the second bottom surface 107 are arranged opposite to each other along the Z direction and are located outside the second receiving cavity. It can be understood that the second top surface 106 is the surface of the second box body 21 facing the positive direction of the Z axis, and the second bottom surface 107 is the surface of the second box body 21 facing the negative direction of the Z axis.

[0071] The second battery is installed in the second receiving cavity and is electrically connected to the second plug connector 22 and the second plug socket 23 through a wire.

[0072] The second plug connector 22 may also be referred to as a plug connector of the second battery box 20, and the second socket 23 may also be referred to as a socket of the second battery box 20. The second plug connector 22 is mounted on the second top plate 212. One end of the second plug connector 22 is electrically connected to the second battery, and the other end is exposed from the second top surface 106.

[0073] In this embodiment, the structure of the second hanging seat 25 is the same as that of the first hanging seat 15, and no further description is given here. There are two second hanging seats 25, and the two second hanging seats 25 are fixed to the second top surface 106 at intervals along the X direction. The second hanging seat 25 is used to connect with the hanging rope of the hanging equipment to realize the hanging of the second battery box 20. In other embodiments, the structure of the second hanging seat 25 and the first hanging seat 15 of the first battery box 10 can also be partially the same, or different.

[0074] The second bottom plate 211 is provided with a receiving groove 26. The opening of the receiving groove 26 is located on the second bottom surface 107. That is, the opening of the receiving groove 26 is located on the surface of the second bottom plate 211 facing the negative direction of the Z axis. That is, the receiving groove 26 is provided on the second bottom surface 107. In this embodiment, there are two receiving grooves 26. The two receiving grooves 26 are arranged at intervals along the X direction. Each receiving groove 26 corresponds to a first hanging seat 15 of the first battery box 10, and the structure of each receiving groove 26 matches the structure of the corresponding first hanging seat 15. "Matching" here means that the first hanging seat 15 can be installed exactly in the corresponding receiving groove 26.

[0075] The receiving groove 26 is used to install the first hanging seat 15 of the first battery box 10. When the second battery box 20 is stacked on the top of the first battery box 10, the first hanging seat 15 of the first battery box 10 is located in the receiving groove 26, so that the gap between the first battery box 10 and the second battery box 20 can be reduced, the connection stability between the first battery box 10 and the second battery box 20 can be improved, and the structural stability of the energy storage device 100 can be improved. In addition, in this embodiment, by providing a receiving groove 26 at the bottom of the second battery box 20 to accommodate the first hanging seat 15, the space occupied by the energy storage device 100 in the Z direction can also be reduced, which plays a role in saving space. At the same time, when the second battery box 20 is stacked on the top of the first battery box 10, the first hanging seat 15 is located in the receiving groove 26, and the user or staff cannot see the first hanging seat 15 from the appearance, making the appearance of the energy storage device 100 more concise. In this embodiment, the two second side panels 213 of the second box body 21 along the X direction are also provided with mounting holes 215. The mounting hole 215 passes through the second side plate 213 and is connected to the corresponding receiving groove 26. The structure of the mounting hole 215 matches the structure of the fixing hole 155 of the first hanging seat 15. When the second battery box 20 is stacked on top of the first battery box 10 and the first hanging seat 15 is located in the receiving groove 26 of the second battery box 20, the fixing hole 155 and the mounting hole 215 are arranged correspondingly. Bolts 1 are provided in the fixing holes 155 and the mounting holes 215, and the bolts 1 are fixedly connected between the first hanging seat 15 and the second side plate 213, so that the first battery box 10 and the second battery box 20 can be fixedly connected, thereby improving the structural stability of the energy storage device 100.

[0076] Please continue reading Figure 8 , the second bottom plate 211 is also provided with a second mounting groove 27. Among them, the second mounting groove 27 can also be called the mounting groove of the second battery box 20. The structure of the second mounting groove 27 matches the structure of the first mounting seat 14 of the first battery box 10. The "matching" here means that the first mounting seat 14 can be installed exactly in the second mounting groove 27. Specifically, the second mounting groove 27 includes a groove side wall 271 and a groove bottom wall 272. The contour of the groove side wall 271 is consistent with or substantially the same as the contour of the first mounting seat 14. The groove side wall 271 includes a first section 273 and a second section 274. The first section 273 is an elliptical ring, and the first section 273 is a plane. That is, the first section 273 is parallel to the Z direction. The second section 274 is an annular inclined surface. The second section 274 is connected between the first section 273 and the groove bottom wall 272, and the angle between the second section 274 and the first section 273 is an obtuse angle. That is, the angle between the second section 274 and the first section 273 is greater than 90 degrees and less than 180 degrees. In this embodiment, the inclination angle of the second section 274 is the same or substantially the same as the inclination angle of the guide section 142 .

[0077] The second socket 23 of the second battery box 20 is installed on the bottom wall 272 of the second mounting groove 27. One end of the second socket 23 extends into the second receiving cavity and is electrically connected to the second battery. The other end of the second socket 23 is located in the second mounting groove 27 and is spaced from the groove side wall 271 of the second mounting groove 27. The second socket 23 is used to be electrically connected to the first plug connector 12 of the first battery box 10.

[0078] See also Figure 3 , Fig. 9 and Fig.10 , Fig. 9 yes Figure 3 The schematic diagram of the partial cross-section structure of the energy storage device 100 along the BB direction is shown. Fig.10 yes Figure 3 The schematic diagram of the partial cross-section structure of the energy storage device 100 along the CC direction is shown.

[0079] The second battery box 20 and the first battery box 10 are stacked along the Z direction and fixedly connected to each other. The first top plate 112 is arranged opposite to the second bottom plate 211, and the first top surface 104 faces the second bottom surface 107. The first mounting seat 14 is located in the second mounting groove 27, the connecting section 141 is parallel to and opposite to the first section 273, and the guide section 142 is parallel to and opposite to the second section 274. The first plug connector 12 is plugged into the second socket 23 and is electrically connected to the first socket 13. The first hanging seat 15 of each first battery box 10 is located in the receiving groove 26 of the corresponding second battery box 20, and the bolt 1 passes through the mounting hole 215 and the corresponding fixing hole 155, so that the second side plate 213 of the second battery box 20 is fixedly connected to the first hanging seat 15, so that the second battery box 20 is fixedly connected to the first battery box 10.

[0080] In the present embodiment, the first lifting seat 15, the first mounting seat 14 and the first plug connector 12 are all located on the first top plate 112, that is, the lifting structure of the battery box 102 and the mounting structure of the upper and lower battery boxes 102 are all located on the top plate of the battery box 102, and no additional components are required to install the lifting structure or the mounting structure of the upper and lower battery boxes 102, thereby simplifying the structure of the battery box 102, that is, the structure of the energy storage device 100 can be simplified, thereby saving costs.

[0081] Furthermore, in the present embodiment, by arranging the first hanging seat 15 and the first mounting seat 14 of the first battery box 10 on the first top plate 112, and correspondingly arranging the receiving groove 26 and the second mounting groove 27 on the second battery box 20, after the first battery box 10 and the second battery box 20 are stacked, the first hanging seat 15 of the first battery box 10 can be received in the receiving groove 26 of the second battery box 20, and the first mounting seat 14 of the first battery box 10 can be received in the second mounting groove 27 of the second battery box 20, thereby preventing the first hanging seat 15 and the first mounting seat 14 from being exposed on the exterior surface of the energy storage device 100, that is, the exposed components on the exterior surface of the energy storage device 100 can be reduced or even avoided, making the appearance of the energy storage device 100 more concise and beautiful.

[0082] During the actual installation process, the first battery box 10 is first moved to the specified position using a lifting device, and then the second battery box 20 is moved to the top of the first battery box 10 using a lifting device, and the receiving groove 26 of the second battery box 20 is aligned with the first lifting seat 15 of the first battery box 10, and the second installation groove 27 of the second battery box 20 is aligned with the first installation seat 14 of the first battery box 10; then the second battery box 20 is moved toward the first battery box 10, so that the first lifting seat 15 is received in the receiving groove 26, the first installation seat 14 is installed in the second installation groove 27, and the second connector 23 is plugged into the first connector 12.

[0083] In this embodiment, by installing lifting seats on the top of the first battery box 10 and the second battery box 20, workers or users can move the battery box 102 through lifting equipment to achieve the installation of the energy storage device 100, thereby saving manpower and making the energy storage device 100 easier to install.

[0084] When the second mounting groove 27 of the second battery box 20 is aligned with the first mounting seat 14 of the first battery box 10, when the second battery box 20 moves toward the first battery box 10, the groove side wall 271 of the second mounting groove 27 first moves along the guide section 142 toward the second mounting groove 27, and then moves along the connecting section 141 toward the second mounting groove 27, so that the first mounting seat 14 is installed in the second mounting groove 27. In addition, when the second battery box 20 moves toward the first battery box 10, the second plug seat 23 of the second battery box 20 gradually moves toward the first plug connector 12 of the first battery box 10 until the first plug connector 12 is plugged into the second plug seat 23.

[0085] In this embodiment, a guide section 142 is provided on the first mounting seat 14 of the first battery box 10, so that when the second battery box 20 is installed in the first battery box 10, the guide section 142 plays a guiding role, and the second mounting groove 27 of the second battery box 20 can be moved along the guide section 142 toward the first mounting seat 14, so that the first mounting seat 14 can be more easily installed in the second mounting groove 27, and the first plug connector 12 of the first battery box 10 can be accurately plugged into the second plug socket 23 of the second battery box 20, thereby improving the connection stability between the second battery box 20 and the first battery box 10.

[0086] In this embodiment, by setting the guide section 142 to be inclined toward the first mounting seat 14, the opening diameter of the guide section 142 is smaller than the opening diameter of the second mounting groove 27, thereby avoiding scratches between the first mounting seat 14 and the second bottom plate 211, thereby avoiding affecting the appearance of the battery box 102 and avoiding damage to the energy storage device 100.

[0087] It should be noted that since the guide section 142 is a circular ring structure, when the groove side wall 271 of the second mounting groove 27 moves along the guide section 142, the second mounting groove 27 can be rotated around its axis by rotating the second battery box 20 around the Z direction, so that the second socket 23 of the second battery box 20 can be rotated to adjust the angle between the second socket 23 of the second battery box 20 and the first plug connector 12 of the first battery box 10, thereby enabling the second socket 23 to be precisely aligned with the first plug connector 12.

[0088] That is, in this embodiment, by setting the guide section 142 as a circular ring structure, when the second battery box 20 is installed in the first battery box 10, the angle of the second battery box 20 relative to the first battery box 10 can be adjusted, so that the second socket 23 of the second battery box 20 and the first plug connector 12 of the first battery box 10 can be accurately aligned, thereby improving the structural stability and electrical connection stability between the second battery box 20 and the first battery box 10. In addition, in this embodiment, by setting the guide section 142 as a circular ring structure, when the second battery box 20 is docked to the first battery box 10 at any angle in the initial installation, the second battery box 20 can be accurately plugged into the first battery box 10 by adjusting the angle of the second battery box 20, thereby improving the freedom of installation of the energy storage device 100 and reducing the difficulty of installation of the energy storage device 100.

[0089] At the same time, in this embodiment, by setting the connecting section 141 of the first mounting seat 14 to an elliptical shape, the angle of the second battery box 20 relative to the first battery box 10 can be adjusted during the installation of the second battery box 20 to the first battery box 10, which saves space.

[0090] Please refer to Figure 5 and Figure 7 In this embodiment, the first bottom plate 111 of the first battery box 10 is provided with a first mounting groove 17, and the structure of the first mounting groove 17 is the same as the structure of the second mounting groove 27. The second battery box 20 further includes a second mounting seat 24. The structure of the second mounting seat 24 is the same as the structure of the first mounting seat 14 of the first battery box 10, and the second mounting seat 24 is installed on the second top plate 212 and surrounds the outer periphery of the second plug connector 22.

[0091] That is, in this embodiment, the structure of the first battery box 10 is the same as the structure of the second battery box 20, which is beneficial to the standardization of the production process of the battery box 102 and plays a role in saving costs.

[0092] like Figure 2 As shown, the energy storage device 100 also includes a third battery box 30. The structure of the third battery box 30 is the same as that of the second battery box 20 and the first battery box 10. The third battery box 30 is stacked on top of the second battery box 20. The second mounting seat 24 of the second battery box 20 is installed in the mounting groove of the third battery box 30, the plug connector of the second battery box 20 is plugged into the plug socket of the third battery box 30, and the hanging seat of the second battery box 20 is received in the receiving groove of the third battery box 30.

[0093] In one embodiment, there may be multiple third battery boxes 30. Multiple third battery boxes 30 are stacked in sequence along the Z direction and are stacked on top of the second battery box 20 at the same time. The structure of each third battery box 30 is the same as that of the first battery box 10 and the second battery box 20. The mounting seat of the lower third battery box 30 is installed in the mounting groove of the upper third battery box 30, the plug connector of the lower third battery box 30 is plugged into the plug socket of the upper third battery box 30, and the hanging seat of the lower third battery box 30 is received in the receiving groove of the upper third battery box 30. During the installation process, multiple third battery boxes 30 can be stacked in sequence from bottom to top.

[0094] See also Fig.11 and Fig.12 , Fig.11 yes Figure 2 The schematic diagram of a part of the structure of the first battery box 10 in the energy storage device 100 in another embodiment is shown. Fig.12 yes Fig.11 The schematic diagram of the partial structure of the first battery box 10 shown in another angle.

[0095] This embodiment and Figure 4The difference of the illustrated embodiment is that, in the present embodiment, the first mounting seat 14 provided on the first top plate 112 is a rectangular ring structure, and the first mounting groove 17 provided on the first bottom plate 111 is a rectangular groove. The first mounting seat 14 includes a connecting section 141 and a guiding section 142. The connecting section 141 is connected to the first top plate 112, and the guiding section 142 is connected to the side of the connecting section 141 away from the first top plate 112. The included angle between the guiding section 142 and the connecting section 141 is an obtuse angle, and the guiding section 142 is inclined toward the inside of the first mounting seat 14.

[0096] The structure of the second battery box 20 is the same as that of the first battery box 10. That is, the second mounting seat 24 of the second battery box 20 is a rectangular ring structure, and the second mounting groove 27 of the second battery box 20 is a rectangular groove. Moreover, the structure of the second mounting seat 24 of the first battery box 10 matches the structure of the second mounting groove 27 of the second battery box 20.

[0097] When the second battery box 20 is stacked on top of the first battery box 10, the first mounting seat 14 of the first battery box 10 is installed in the second mounting groove 27 of the second battery box 20. In this embodiment, by setting the first mounting seat 14 as a rectangular ring structure, while ensuring the guiding function of the first mounting seat 14, it can also simplify the structure of the first mounting seat 14 and save space on the battery box 102.

[0098] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An energy storage device, characterized in that: including a first battery box and a second battery box; The first battery box includes a first box body, a plug connector and a mounting seat; the first box body includes a first top surface and a first bottom surface, and the first top surface and the first bottom surface are arranged opposite to each other along a first direction; the plug connector is installed in the first box body and exposes the first top surface; The mounting seat comprises a connecting section and a guiding section, wherein the connecting section is fixedly connected to the first top surface, and the guiding section is connected to one end of the connecting section facing away from the first top surface; the guiding section is inclined inwardly toward the mounting seat, and the angle between the guiding section and the center line of the mounting seat along the first direction is greater than 0 degrees and less than 90 degrees; an opening is provided at one end of the guiding section facing away from the first top surface; the mounting seat is arranged around the plug connector, and the opening is arranged opposite to the plug connector along the first direction; The second battery box includes a second box body and a socket, the second box body includes a second top surface and a second bottom surface, the second top surface and the second bottom surface are arranged opposite to each other along the first direction, the second bottom surface is provided with a mounting groove, and the socket is installed in the mounting groove; The second box body is stacked with the first box body along the first direction, the second bottom surface faces the first top surface, the mounting seat is installed in the mounting groove, and the plug connector is plugged into the socket and electrically connected to the socket.

2. The energy storage device according to claim 1, characterized in that: The first battery box also includes a hanging seat, which is installed on the first top surface and is spaced apart from the mounting seat.

3. The energy storage device according to claim 2, characterized in that: The second bottom surface is also provided with a receiving groove, and when the second box body and the first box body are stacked, the hanging seat is located in the receiving groove.

4. The energy storage device according to claim 3, characterized in that: There are two hanging seats, and the two hanging seats are symmetrically arranged about the center of the first top surface.

5. The energy storage device according to claim 3, characterized in that: The first battery box also includes a first battery, and the first battery is installed in the first box; The plug connector includes a first end and a second end, the first end and the second end are arranged opposite to each other, the second end is electrically connected to the first battery, and the first end is exposed from the first top surface; One end of the guide section facing away from the connecting section protrudes from the first end, or one end of the guide section facing away from the connecting section is flush with the first end.

6. The energy storage device according to any one of claims 1 to 5, characterized in that: The cross section of the guide section perpendicular to the first direction is circular.

7. The energy storage device according to any one of claims 1 to 5, characterized in that: The cross section of the guide section perpendicular to the first direction is a rectangular ring.

8. The energy storage device according to any one of claims 1 to 5, characterized in that: The groove side wall of the installation groove includes a first section and a second section, the first section is connected to the second bottom surface, and the second section is connected between the first section and the groove bottom wall of the installation groove; when the second box body is stacked with the first box body, the first section is parallel to and opposite to the connecting section, and the second section is parallel to and opposite to the guide section.

9. The energy storage device according to claim 1, characterized in that: The connecting section is vertically connected to the first top surface, and an angle between the guiding section and the connecting section is greater than 90 degrees and less than 180 degrees.

10. The energy storage device according to claim 1, characterized in that: The included angle between the connecting section and the first top surface is greater than 0 degrees and less than 90 degrees, and the included angle between the connecting section and the guiding section is 180 degrees.

11. The energy storage device according to claim 1, characterized in that: The second top surface is also provided with a mounting seat and a plug connector; the energy storage device also includes a third battery box, and the bottom surface of the third battery box is provided with a mounting groove and a plug connector; The third battery box is stacked on top of the second battery box, and the mounting seat of the second battery box is installed in the mounting groove of the third battery box, and the plug connector of the second battery box is plugged into the plug connector of the third battery box.

12. The energy storage device according to claim 11, characterized in that: There are multiple third battery boxes, and the top surface of each third battery box is provided with a mounting seat and a plug connector, and the bottom surface of each third battery box is provided with a mounting groove and a plug socket; multiple third battery boxes are stacked, and the mounting seat of each third battery box is installed in the mounting groove of the third battery box in the upper layer, and the plug connector of each third battery box is plugged into the plug socket of the third battery box in the upper layer.

13. An electrical equipment, characterized in that: The energy storage device comprises the energy storage device according to any one of claims 1 to 12, wherein the energy storage device is used to supply power to the electrical device.

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