Inverter and energy storage device

Abstract

The utility model provides an inverter and an energy storage device, and relates to the technical field of energy storage, the inverter comprises a box body, the box body comprises a bottom wall and a side wall, the bottom wall and the side wall are enclosed to form a mounting cavity, and the side wall is provided with an opening; the at least one side plate is arranged on one side of the box body, a containing space is defined by the side plate and the box body, the opening is communicated with the containing space, and a wire outlet communicated with the containing space is formed in the side plate; and the junction box is arranged in the mounting cavity and is connected with the side wall, one side of the junction box is provided with an external port, and the external port extends into the accommodating space through the opening. The side plate can prevent the external port from being touched and plugged by mistake, can also prevent the external port from being exposed in the external environment, prevents the external port from being affected by dust and moisture, prevents the service life from being shortened, can improve the aesthetic degree of the inverter, and improves the competitiveness of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, and particularly relates to an inverter and an energy storage device. Background Art

[0002] In the traditional hybrid inverter, since the inverter needs to be connected to a photovoltaic panel, an energy storage battery, a power grid, a load or a communication device, a large number of external ports need to be arranged. In addition, there are various protection switches and buttons, etc. This makes a large number of external connections need to be made when the product is used. The positions of the external ports are relatively scattered, and the scattered external ports are not conducive to the external operation of the user. Moreover, the external ports of the inverter are exposed in the environment, and the external ports are easily affected by dust and moisture, resulting in a decrease in service life, and at the same time, it also affects the overall aesthetics of the product.

[0003] Therefore, how to provide an inverter that can prevent the external ports from being accidentally touched and unplugged and improve the overall aesthetic degree has become an urgent problem to be solved at present. Summary of the Utility Model

[0004] The utility model provides an inverter and an energy storage device, which solve the problems in the related art that the external ports are exposed in the environment and are easily accidentally touched and unplugged, and are easily affected by dust and moisture in the environment, and the overall aesthetic degree of the product is insufficient.

[0005] To this end, the first object of the utility model is to provide an inverter.

[0006] The second object of the utility model is to provide an energy storage device.

[0007] In view of this, an embodiment of the first aspect of the utility model provides an inverter, including: a box body, including a bottom wall and a side wall, the bottom wall and the side wall enclose an installation cavity, and an opening is provided on the side wall; at least one side plate, arranged on one side of the box body and enclosing a receiving space with the box body, the opening is communicated with the receiving space, and an outlet is provided on the side plate and is communicated with the receiving space; a junction box, arranged in the installation cavity and connected to the side wall, an external port is provided on one side of the junction box, and the external port extends into the receiving space through the opening.

[0008] According to the inverter provided by the present utility model, it includes a box body and at least one side plate. Among them, the box body includes a bottom wall and a side wall, and the bottom wall and the side wall jointly enclose an installation cavity for accommodating a junction box or other components. At the same time, there is an opening on the side wall of the box body, and the junction box is located on one side inside the installation cavity and is connected to the side wall. At least one side plate is arranged on one side of the box body, and the side plate and the box body enclose a containing space. The opening is communicated with the containing space, and an outlet is arranged on the side plate and is communicated with the containing space. At the same time, the inverter further includes a junction box, which is arranged inside the installation cavity and is connected to the side wall. An external connection port is arranged on one side of the junction box. Multiple external connection ports facilitate users to connect other devices, reduce the wiring difficulty, and the multiple external connection ports extend into the containing space through the opening. That is to say, there is an opening on one side of the box body, and the junction box cooperates with the side wall provided with the opening to seal the installation cavity. At the same time, an external connection port is arranged on one side of the junction box, and the external connection port extends into the containing space through the opening, enabling the side plate to cover the external connection port and physically protect the external connection port. Therefore, the side plate provided in this application can prevent the external connection port from being accidentally touched and unplugged, and at the same time, it can also prevent the external connection port from being exposed to the external environment, preventing the external connection port from being affected by dust and moisture and reducing the service life. In addition, as one of the appearance structures of the inverter, the side plate can improve the aesthetic degree of the inverter compared with the exposed external connection port, thereby improving the competitiveness of the product.

[0009] Optionally, in some embodiments, the external connection port includes a first port and a second port. The side of the junction box provided with the external connection port includes a first partition and a second partition. The first port is arranged in the first partition, and the second port is arranged in the second partition.

[0010] In this embodiment, the external connection port includes a first port and a second port. At the same time, the side of the junction box provided with the external connection port includes a first partition and a second partition. Among them, the first port is arranged in the first partition, and the second port is arranged in the second partition. Since the inverter of the present application is a hybrid inverter, compared with a photovoltaic inverter, the hybrid inverter needs to be connected to a photovoltaic panel, a storage battery, a power grid, a load or a communication device. Therefore, the inverter of the present application has more external connection ports than the photovoltaic inverter in the related art. The side of the junction box provided with the external connection port is divided into areas, and the second port and the first port (the first port is also the weak-current external connection port) are partitioned and arranged, so as to facilitate the user to separate the wiring of multiple strong-current connection wires and multiple communication connection wires. For example, different types of connection wires are bundled with cable ties to improve the aesthetics of the wiring, which can reduce the operation difficulty of the user.

[0011] Optionally, in some embodiments, the outlet includes a first outlet and a second outlet. The opening of the first outlet faces the first direction, and the opening of the second outlet faces the second direction.

[0012] In this embodiment, a first wire outlet and a second wire outlet are provided on the side plate, and the outlet directions of the first wire outlet and the second wire outlet are different. Among them, the first direction is the length direction of the box body, and the second direction is the thickness direction of the box body. When the inverter is connecting the cable, the user can choose the wire outlet routing according to their own needs or actual situation, improving the user's satisfaction.

[0013] Optionally, in some embodiments, the side plate includes: a first plate, the two ends of which in the third direction are respectively connected to the side walls, and a part of the first plate is spaced from the side walls; a second plate, connecting one end of the first plate in the second direction and the bottom wall; wherein, the first wire outlet is arranged on the first plate, the second wire outlet is arranged on the second plate, and the first plate and the second plate are detachably connected or are of an integral structure.

[0014] In this embodiment, the side plate includes a first plate and a second plate. The two ends of the first plate in the third direction are respectively connected to the side walls, and a part of the first plate is spaced from the side walls. The second plate connects one end of the first plate in the second direction and the bottom wall of the box body. Among them, the second direction is the thickness direction of the box body, and the third direction is the width direction of the box body. That is to say, the side plate can be an L-shaped plate. A first connecting piece is provided on the first plate, and a second connecting piece is provided on the side wall. The detachable connection is realized through the first connecting piece on the first plate and the second connecting piece on the side wall; the side plate can also be a U-shaped plate, and a first connecting piece is provided at each of the two ends of the first plate in the third direction, and the first plate is connected to the side wall through the two first connecting pieces on the first plate; of course, the side plate can also be a straight plate, and two second connecting pieces are provided on the side wall, and the second connecting pieces are respectively connected to the two ends of the straight plate in the third direction. The side plates in the above three forms can all make a distance between the first plate and the side wall to leave a receiving space for receiving the cable. The second plate connects the first plate and the bottom wall of the box body, and the second plate and the bottom wall of the box body jointly form the bottom plate of the inverter. At the same time, the first wire outlet and the second wire outlet are respectively arranged on the first plate and the second plate. It can be seen that the opening directions of the first wire outlet and the second wire outlet are different. Routing through the first wire outlet can avoid bending of the connecting wire, improving the service life of the connecting wire. At the same time, routing through the second wire outlet can use the inverter to shield the connecting wire, improving the aesthetic degree. In addition, the connection mode of the first plate and the second plate can be a detachable connection. Of course, the first plate and the second plate can also be of an integral structure. The detachable first plate and second plate can facilitate the user to repair the side plate and replace the damaged first plate or second plate. The integral first plate and second plate can improve the stability of the side plate, making it have higher structural strength, and at the same time reducing the preparation cost of the side plate.

[0015] Optionally, in some embodiments, two side plates are respectively provided on both sides of the box body. One side plate is used to cover the external ports, and the other side plate can be arranged on the other side to cover the devices on the other side plate. Setting side plates on the left and right sides of the box body can improve the aesthetic degree of the box body. In addition, the side plate without wiring requirements can block the first wire outlet with a heat dissipation hole to further improve the aesthetic appearance of the box body.

[0016] Optionally, in some embodiments, the inverter further includes a first cable and a second cable. The voltage on the first cable is greater than the voltage on the second cable. The first wire outlet is for the first cable to pass through, and the second wire outlet is for the second cable to pass through.

[0017] In this embodiment, the first cable is a high-voltage cable for transmitting power, and the second cable is a low-voltage cable. The low-voltage cable can be a communication cable for transmitting signals. The voltage on the first cable is greater than the voltage on the second cable. At the same time, the number of both the first cable and the second cable is multiple. The first wire outlet is for the first cable to pass through, and the second wire outlet is for the second cable to pass through. That is, the first cable and the second cable pass through different wire outlets, which can avoid signal interference of the first cable on the second cable.

[0018] Optionally, in some embodiments, the number of the second wire outlets is multiple, and the opening area of the second wire outlet is smaller than the opening area of the first wire outlet.

[0019] In this embodiment, the number of the second wire outlets is multiple, and the opening area of the second wire outlet is smaller than the opening area of the first wire outlet. That is to say, the area of the second plate in the L-shaped side plate is smaller than the area of the first plate. Therefore, the opening area of the second wire outlet is smaller than the opening area of the second wire outlet. The number of the second wire outlets is set to be multiple, so as to make up for the defect of the smaller opening area of the second wire outlet to meet the user's use requirement of wiring from the second wire outlet.

[0020] Optionally, in some embodiments, the shape of the first wire outlet is rectangular, and the shape of the second wire outlet is semi-circular. The area of the first plate is larger. Therefore, setting the first wire outlet as rectangular can concentrate the cables, reduce the wiring difficulty, and improve the aesthetic degree of the side plate. While the area of the second plate is smaller, setting the second wire outlet as semi-circular can increase the setting area of the second wire outlet to meet the user's use requirements.

[0021] Optionally, in some embodiments, a protection switch is further provided on the side of the junction box where the external port is provided. The protection switch is used to cut off the overload current or short-circuit current. The side plate includes: heat dissipation holes provided on the first plate and arranged opposite to the protection switch.

[0022] In this embodiment, a protection switch is further provided on the junction box. Specifically, the protection switch is arranged on the side of the junction box where the external connection port is provided, and the protection switch is used to cut off the overload current or short - circuit current. That is to say, the protection switch can protect the circuit board inside the junction box and the box body, and can prevent the overload current or short - circuit current from burning out the circuit board or the junction box. At the same time, the side plate includes heat dissipation holes, which are arranged on the first plate and are oppositely arranged with the protection switch. On the one hand, the heat dissipation holes can dissipate heat from the junction box to prevent the junction box from having too high a temperature and affecting the service life of the internal components. On the other hand, the heat dissipation holes being oppositely arranged with the protection switch can limit the opening area of the first wire outlet, thereby reducing the influence of dust on the terminal and improving the service life of the terminal.

[0023] Optionally, in some embodiments, the heat dissipation holes include ventilation grilles and ventilation swing blades, etc.

[0024] Optionally, in some embodiments, the inverter further includes: a cover plate, connected to the box body and used to open or close the installation cavity; a circuit board, arranged in the installation cavity; and a pneumatic balance valve, arranged on the side wall or bottom wall of the box body and used to balance the air pressure inside and outside the box body.

[0025] In this embodiment, the inverter further includes a cover plate, a circuit board and a pneumatic balance valve. Among them, the cover plate is connected to the box body and can open or close the installation cavity. The circuit board is arranged in the installation cavity. The connection mode between the cover plate and the box body can be a detachable connection, which is convenient for users to repair the circuit board in the installation cavity. At the same time, the box body has waterproof and dust - proof functions, and generally the cover plate will not be opened, so the connection mode between the cover plate and the box body can also be an integral connection. Both connection modes can meet the sealing performance of the box body. At the same time, the pneumatic balance valve is arranged on the side wall or bottom wall of the box body to balance the air pressure inside and outside the box body. When the inverter operates, the circuit board will generate a large amount of heat. Since the box body is sealed and there is a large temperature difference between the inside and outside of the box body, this large temperature difference will cause the air pressure inside and outside the box body to be different, affecting the sealing performance of the box body. Therefore, by arranging a pneumatic balance valve on the side wall or bottom wall of the box body, the air pressure inside and outside the box body can be balanced, improving the sealing performance and service life of the box body.

[0026] Optionally, in some embodiments, the access end of the external connection port is connected to the circuit board, the output end of the external connection port is connected to an external device, and the junction box is detachably connected to the box body.

[0027] In this embodiment, a single external port includes an access end and an output end. The access end is connected to the circuit board in the installation cavity, and the output end is connected to an external device. The external device includes an electrical device, an energy storage battery assembly, or a power grid. It can be seen that the inverter of the present application is a hybrid inverter with multiple functions. Through the external port, the power generated by the photovoltaic panel can be directly used or stored, or the power generated by the photovoltaic panel can be input into the power grid. In addition, the junction box is detachably connected to the box body, that is, the junction box is independent of the box body. The detachable connection between the junction box and the box body facilitates the user to repair the junction box.

[0028] Optionally, in some embodiments, the inverter further includes: a partition plate disposed in the box body, separating the installation cavity into a first installation cavity and a second installation cavity; wherein, the circuit board is disposed in the first installation cavity, and the junction box is disposed in the second installation cavity.

[0029] In this embodiment, the inverter further includes a partition plate. The partition plate is disposed in the box body and separates the installation cavity into a first installation cavity and a second installation cavity. Among them, the circuit board is disposed in the first installation cavity, and the junction box is disposed in the second installation cavity. That is, the internal space of the box body is isolated by the partition plate, and the circuit board and the junction box are separately arranged, which can avoid the heat generated by the circuit board from being transferred to the junction box, and at the same time, it can also reduce the electromagnetic interference to the circuit in the junction box and improve the service life of the junction box.

[0030] Optionally, in some embodiments, the inverter further includes: a groove disposed on the side of the cover plate facing the box body; a protrusion disposed on the side plate, and the protrusion can extend into the groove to locate the installation position of the side plate.

[0031] In this embodiment, the inverter further includes a groove and a protrusion. The groove is disposed on the side of the cover plate facing the box body, and the protrusion is disposed on the side plate. And the protrusion on the side plate can deeply extend into the groove of the cover plate to locate the installation position of the side plate. That is, when installing the side plate, the groove and the protrusion are used for preliminary positioning, and then the side plate is fixed by screws or other connecting parts, which can improve the installation accuracy of the side plate and reduce the installation difficulty of the side plate.

[0032] Optionally, in some embodiments, a non-loosening screw is used to fix the side plate on the cover plate. The non-loosening screw is also called a spring screw, a non-dropping screw, or an anti-loosening screw. Even in the case of loosening, the non-loosening screw will not fall out of the installation hole, ensuring that the screw will not be lost when disassembling the side plate and improving the disassembly efficiency of the user.

[0033] Optionally, in some embodiments, the inverter further includes: a mounting bracket disposed on the box body and located outside the box body, and the mounting bracket is used to fix the box body.

[0034] In this embodiment, the inverter further includes a mounting bracket, which is provided on the box body and located outside the box body. The mounting bracket is used to fix the box body. That is to say, the mounting bracket can be provided on the bottom wall of the box body or on the side wall of the box body. Users can fix the box body on the wall through the mounting bracket, avoiding the need for users to use an additional mounting bracket to fix the box body and facilitating the installation of the box body by users.

[0035] Optionally, in some embodiments, the mounting bracket is a metal bracket, which can improve the stability of the box body fixation. At the same time, by using an adjustable bolt mounting bracket, the installation requirements for different thicknesses and strengths can be met.

[0036] An embodiment of the second aspect of the present utility model provides an energy storage device, including the inverter proposed in the first aspect.

[0037] The energy storage device proposed according to the present utility model includes the inverter proposed in the first aspect, and thus has all the beneficial effects of the inverter proposed in the first aspect. Details are not described herein again.

[0038] Optionally, in some embodiments, the energy storage device further includes: an energy storage battery assembly, connected to the inverter, and the energy storage battery assembly is used to store electrical energy.

[0039] In this embodiment, the energy storage device includes an energy storage battery assembly. The energy storage battery assembly is connected to the inverter and is used to store the electrical energy generated by the photovoltaic panel. At the same time, since the photovoltaic panel generates DC high-voltage electricity, directly storing it is likely to damage the energy storage battery assembly. Therefore, the DC high-voltage electricity is converted into lower-voltage direct current through the inverter, which is convenient for the energy storage battery assembly to store and improves the service life of the energy storage device. In addition, the energy storage battery assembly is installed on the ground, that is, the energy storage battery assembly is in direct contact with the ground, and the inverter is arranged above the energy storage battery assembly. Therefore, the mounting bracket does not bear the weight of the inverter itself and only plays a role in restricting the movement of the inverter, improving the installation reliability of the energy storage device.

[0040] The additional aspects and advantages of the present utility model will become apparent in the following description section or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0042] Figure 1It is one of the schematic structural diagrams of an inverter according to an embodiment provided by the present utility model;

[0043] Figure 2 It is the second schematic structural diagram of an inverter according to an embodiment provided by the present utility model;

[0044] Figure 3 It is the third schematic structural diagram of an inverter according to an embodiment provided by the present utility model;

[0045] Figure 4 It is the fourth schematic structural diagram of an inverter according to an embodiment provided by the present utility model;

[0046] Figure 5 It is the fifth schematic structural diagram of an inverter according to an embodiment provided by the present utility model;

[0047] Figure 6 It is the sixth schematic structural diagram of an inverter according to an embodiment provided by the present utility model;

[0048] Figure 7 It is the schematic structural diagram of an energy storage battery assembly according to an embodiment provided by the present utility model;

[0049] Figure 8 It is the first schematic structural diagram of an energy storage device according to an embodiment provided by the present utility model;

[0050] Figure 9 It is the second schematic structural diagram of an energy storage device according to an embodiment provided by the present utility model.

[0051] Among them, Figures 1 to 9 the corresponding relationship between the reference numerals and the component names in

[0052] 1 Inverter, 11 Cabinet, 111 Bottom Wall, 112 Side Wall, 1121 Second Connector, 113 Opening, 114 Installation Cavity, 1141 First Installation Cavity, 1142 Second Installation Cavity, 115 Partition, 12 Cover Plate, 121 Groove, 13 Side Plate, 131 First Plate, 132 Second Plate, 133 Heat Dissipation Hole, 134 Protrusion, 135 First Connector, 14 Accommodating Space, 15 Outlet, 151 First Outlet, 152 Second Outlet, 153 First Cable, 154 Second Cable, 16 Junction Box, 161 External Connection Port, 1611 First Port, 1612 Second Port, 162 First Partition, 163 Second Partition, 164 Protection Switch, 165 Access End, 166 Output End, 17 Circuit Board, 18 Air Pressure Balance Valve, 19 Mounting Bracket, 2 Energy Storage Device, 21 Energy Storage Battery Assembly. Detailed Embodiment

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0054] An embodiment of the first aspect of the present invention provides an inverter 1, as Figure 1 , Figure 2 and Figure 3 shown. The inverter 1 includes: a box body 11, including a bottom wall 111 and a side wall 112. The bottom wall 111 and the side wall 112 enclose an installation cavity 114, and an opening 113 is provided on the side wall 112; at least one side plate 13 is arranged on one side of the box body 11 and encloses a receiving space 14 with the box body 11. The opening 113 is communicated with the receiving space 14, and an outlet 15 communicated with the receiving space 14 is provided on the side plate 13; a junction box 16 is arranged in the installation cavity 114 and is connected to the side wall 112. An external connection port 161 is provided on one side of the junction box 16, and the external connection port 161 extends into the receiving space 14 through the opening 113.

[0055] According to the inverter 1 provided by the present utility model, it includes a box body 11 and at least one side plate 13. Among them, the box body 11 includes a bottom wall 111 and a side wall 112, and the bottom wall 111 and the side wall 112 jointly enclose an installation cavity 114. The installation cavity 114 is used to accommodate a junction box 16 or other components. At the same time, an opening 113 is provided on the side wall 112 of the box body 11. The junction box 16 is located on one side inside the installation cavity 114 and is connected to the side wall 112. At least one side plate 13 is provided on one side of the box body 11. The side plate 13 and the box body 11 enclose an accommodation space 14. The opening 113 is communicated with the accommodation space 14, and an outlet 15 communicated with the accommodation space 14 is provided on the side plate 13. At the same time, the inverter 1 further includes a junction box 16. The junction box 16 is arranged inside the installation cavity 114 and is connected to the side wall 112. An external connection port 161 is provided on one side of the junction box 16. A plurality of external connection ports 161 facilitate users to connect other devices, reduce the wiring difficulty, and the plurality of external connection ports 161 extend into the accommodation space 14 through the opening 113. That is to say, an opening 113 is provided on one side of the box body 11. The junction box 16 cooperates with the side wall 112 provided with the opening 113 to seal the installation cavity 114. At the same time, an external connection port 161 is provided on one side of the junction box 16, and the external connection port 161 extends into the accommodation space 14 through the opening 113, so that the side plate 13 can cover the external connection port 161 to physically protect the external connection port 161. Therefore, the provided side plate 13 of the present application can prevent the external connection port 161 from being accidentally touched and unplugged. At the same time, it can also prevent the external connection port from being exposed to the external environment, prevent the external connection port from being affected by dust and moisture, and reduce the service life. In addition, as one of the appearance structures of the inverter 1, the side plate 13 can improve the aesthetic degree of the inverter compared with the exposed external connection port 161, thereby improving the competitiveness of the product.

[0056] Optionally, in some embodiments, as Figure 2 and Figure 3 shown, the external connection port 161 includes a first port 1611 and a second port 1612. The side of the junction box 16 provided with the external connection port 161 includes a first partition 162 and a second partition 163. The first port 1611 is arranged in the first partition 162, and the second port 1612 is arranged in the second partition 163.

[0057] In this embodiment, the external ports 161 include a first port 1611 and a second port 1612. Meanwhile, one side of the junction box 16 where the external ports 161 are provided includes a first partition 162 and a second partition 163. Among them, the first port 1611 is disposed in the first partition 162, and the second port 1612 is disposed in the second partition 163. Since the inverter 1 of the present application is a hybrid inverter, compared with a photovoltaic inverter, a hybrid inverter needs to be connected to a photovoltaic panel, a storage battery, a power grid, a load or a communication device. Therefore, the inverter 1 of the present application has more external ports 161 than the photovoltaic inverter in the related art. The side of the junction box 16 where the external ports 161 are provided is divided into regions, and the second port 1612 and the first port 1611 (the first port 1611 is also the weak-current external port 161) are partitioned and arranged, so as to facilitate the user to separately route multiple strong-current connection wires and multiple communication connection wires. For example, different types of connection wires are bundled with cable ties to improve the aesthetics of the wiring, and the operation difficulty of the user can be reduced.

[0058] Optionally, in some embodiments, as Figure 1 shown, the wire outlet 15 includes a first wire outlet 151 and a second wire outlet 152. The opening of the first wire outlet 151 faces the first direction, and the opening of the second wire outlet 152 faces the second direction.

[0059] In this embodiment, the first wire outlet 151 and the second wire outlet 152 are provided on the side plate 13, and the outlet directions of the first wire outlet 151 and the second wire outlet 152 are different. Among them, as Figure 1 shown, the first direction is the length direction of the box body 11, and the second direction is the thickness direction of the box body 11. When the inverter is connecting the cables, the user can select the wire outlet 15 for wiring according to his own needs or actual situation, improving the user's satisfaction.

[0060] Optionally, in some embodiments, as Figure 1 shown, the side plate 13 includes: a first plate 131, the two ends of which in the third direction are respectively connected to the side walls 112, and part of the first plate 131 is spaced from the side walls 112; a second plate 132, connecting one end of the first plate 131 in the second direction and the bottom wall 111. Among them, the first wire outlet 151 is provided on the first plate 131, the second wire outlet 152 is provided on the second plate 132, and the first plate 131 and the second plate 132 are detachably connected or are of an integral structure.

[0061] In this embodiment, the side plate 13 includes a first plate 131 and a second plate 132, the two ends of which in the third direction are respectively connected to the side walls 112, part of the first plate 131 is spaced from the side walls 112, and the second plate 132 connects one end of the first plate 131 in the second direction and the bottom wall 111 of the box body 11. Among them, as Figure 1As shown, the third direction is the width direction of the box body 11, which can also be understood as the height direction of the box body 11 after the inverter 1 is installed. That is to say, the side plate 13 can be an L-shaped plate. A first connecting member 135 is provided on the first plate 131, and a second connecting member 1121 is provided on the side wall 112. The detachable connection is achieved through the first connecting member 135 on the first plate 131 and the second connecting member 1121 on the side wall 112. The side plate 13 can also be a U-shaped plate. A first connecting member 135 is provided at each end of the first plate 131 along the third direction, and the first plate 131 is connected to the side wall 112 through the two first connecting members 135 on the first plate 131. Of course, the side plate 13 can also be a straight plate. Two second connecting members 1121 are provided on the side wall 112, and the second connecting members 1121 are respectively connected to both ends of the straight plate along the third direction. The side plates 13 in the above three forms can all keep a distance between the first plate 131 and the side wall 112 to leave an accommodation space 14 for accommodating cables. The second plate 132 connects the first plate 131 and the bottom wall 111 of the box body 11, and the second plate 132 and the bottom wall 111 of the box body 11 together form the bottom plate of the inverter. At the same time, the first wire outlet 151 and the second wire outlet 152 are respectively provided on the first plate 131 and the second plate 132. It can be seen that the opening directions of the first wire outlet 151 and the second wire outlet 152 are different. Wiring from the first wire outlet 151 can avoid bending of the connecting wires and improve the service life of the connecting wires. At the same time, wiring from the second wire outlet 152 can use the inverter 1 to shield the connecting wires and improve the aesthetic degree. In addition, the connection method between the first plate 131 and the second plate 132 can be a detachable connection. Of course, the first plate 131 and the second plate 132 can also be an integral structure. The detachable first plate 131 and second plate 132 are convenient for users to repair the side plate 13 and replace the damaged first plate 131 or second plate 132. The integral structure of the first plate 131 and the second plate 132 can improve the stability of the side plate 13, make it have higher structural strength, and at the same time reduce the preparation cost of the side plate 13.

[0062] Optionally, in some embodiments, as Figure 1 shown, two side plates 13 are respectively arranged on both sides of the box body 11. Among them, one side plate 13 is used to cover the external port 161, and the other side plate 13 can be arranged on the other side to cover the devices on other side plates 13. Arranging side plates 13 on the left and right sides of the box body 11 can improve the aesthetic degree of the box body 11. In addition, for the side plate 13 without wiring requirements, the first wire outlet 151 can be blocked by the heat dissipation holes 133 to further improve the aesthetic appearance of the box body 11.

[0063] Optionally, in some embodiments, as Figure 4As shown, the inverter 1 further includes a first cable 153 and a second cable 154. The voltage on the first cable 153 is greater than the voltage on the second cable 154. The first outlet 151 is for the first cable 153 to pass through, and the second outlet 152 is for the second cable 154 to pass through.

[0064] In this embodiment, the first cable 153 is a high-voltage cable for transmitting power, and the second cable 154 is a low-voltage cable. The low-voltage cable can be a communication cable for transmitting signals. The voltage on the first cable 153 is greater than the voltage on the second cable 154. At the same time, the number of both the first cable 153 and the second cable 154 is multiple. The first outlet 151 is for the first cable 153 to pass through, and the second outlet 152 is for the second cable 154 to pass through. That is, the first cable 153 and the second cable 154 pass through different outlets 15, which can avoid signal interference of the first cable 153 on the second cable 154.

[0065] Optionally, in some embodiments, such as Figure 1 As shown, the number of the second outlets 152 is multiple, and the opening area of the second outlet 152 is smaller than the opening area of the first outlet 151.

[0066] In this embodiment, the number of the second outlets 152 is multiple, and the opening area of the second outlet 152 is smaller than the opening area of the first outlet 151. That is to say, the area of the second plate 132 in the L-shaped side plate 13 is smaller than the area of the first plate 131. Therefore, the opening area of the second outlet 152 is smaller than the opening area of the second outlet 152. The number of the second outlets 152 is set to be multiple, so as to make up for the defect of the smaller opening area of the second outlet 152 to meet the user's usage requirement of routing wires through the second outlet 152.

[0067] Optionally, in some embodiments, such as Figure 1 As shown, the shape of the first outlet 151 is rectangular, and the shape of the second outlet 152 is semi-circular. The area of the first plate 131 is larger. Therefore, setting the first outlet 151 as rectangular can concentrate the cables, reduce the routing difficulty, and improve the aesthetic degree of the side plate 13. While the area of the second plate 132 is smaller, setting the second outlet 152 as semi-circular can increase the setting area of the second outlet 152 to meet the user's usage requirements.

[0068] Optionally, in some embodiments, such as Figure 2 and Figure 3 As shown, a protection switch 164 is further provided on the side of the junction box 16 where the external port 161 is provided. The protection switch 164 is used to cut off the overload current or short-circuit current. The side plate 13 includes: heat dissipation holes 133 provided on the first plate 131 and oppositely arranged with the protection switch 164.

[0069] In this embodiment, a protection switch 164 is further provided on the junction box 16. Specifically, the protection switch 164 is arranged on the side of the junction box 16 where the external connection port 161 is provided. Among them, the protection switch 164 is used to cut off the overload current or short-circuit current. That is to say, the protection switch 164 can protect the circuit board 17 inside the junction box 16 and the box body 11, and can prevent the overload current or short-circuit current from burning out the circuit board 17 or the junction box 16. At the same time, the side plate 13 includes heat dissipation holes 133, and the heat dissipation holes 133 are arranged on the first plate 131 and are arranged opposite to the protection switch 164. On the one hand, the heat dissipation holes 133 can dissipate heat from the junction box 16 to prevent the temperature of the junction box 16 from being too high and affecting the service life of the internal components. On the other hand, the heat dissipation holes 133 are arranged opposite to the protection switch 164, which can limit the opening area of the first wire outlet 151, thereby reducing the influence of dust on the terminal and improving the service life of the terminal.

[0070] Optionally, in some embodiments, such as Figure 4 shown, the heat dissipation holes 133 include ventilation grilles and ventilation swing blades, etc.

[0071] Optionally, in some embodiments, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, the inverter 1 further includes: a cover plate 12, connected to the box body 11, for opening or closing the installation cavity 114; a circuit board 17, arranged in the installation cavity 114; a pneumatic balance valve 18, arranged on the side wall 112 or the bottom wall 111 of the box body 11, for balancing the air pressure inside and outside the box body 11.

[0072] In this embodiment, the inverter 1 further includes a cover plate 12, a circuit board 17, and a pneumatic balance valve 18. Among them, the cover plate 12 is connected to the box body 11 and can open or close the installation cavity 114. The circuit board 17 is arranged in the installation cavity 114. The connection mode between the cover plate 12 and the box body 11 can be a detachable connection, which is convenient for users to repair the circuit board 17 in the installation cavity 114. At the same time, the box body 11 has waterproof and dustproof functions, and generally the cover plate 12 will not be opened. Therefore, the connection mode between the cover plate 12 and the box body 11 can also be an integral connection. Both connection modes can meet the sealing performance of the box body 11. At the same time, the pneumatic balance valve 18 is arranged on the side wall 112 or the bottom wall 111 of the box body 11 to balance the air pressure inside and outside the box body 11. When the inverter 1 operates, the circuit board 17 will generate a large amount of heat. Since the box body 11 is sealed and there is a large temperature difference between the inside and outside of the box body 11, a large temperature difference will cause the air pressure inside and outside the box body 11 to be different, affecting the sealing performance of the box body 11. Therefore, by arranging the pneumatic balance valve 18 on the side wall 112 or the bottom wall 111 of the box body 11, the air pressure inside and outside the box body 11 can be balanced, improving the sealing performance and service life of the box body 11.

[0073] Optionally, in some embodiments, as Figure 2 , Figure 3 and Figure 6 shown, the access end 165 of the external connection port 161 is connected to the circuit board 17, the output end 166 of the external connection port 161 is connected to an external device, and the junction box 16 is detachably connected to the box body 11.

[0074] In this embodiment, a single external connection port 161 includes an access end 165 and an output end 166. The access end 165 is connected to the circuit board 17 in the installation cavity 114, and the output end 166 is connected to an external device. The external device includes an electrical device, a energy storage battery assembly 21, or a power grid. It can be seen that the inverter 1 of the present application is a hybrid inverter with multiple functions. Through the external connection port 161, the power generated by the photovoltaic panel can be directly used or stored, or the power generated by the photovoltaic panel can be input into the power grid. In addition, the junction box 16 is detachably connected to the box body 11, that is, the junction box 16 is independent of the box body 11. The detachable connection between the junction box 16 and the box body 11 facilitates users to repair the junction box 16.

[0075] Optionally, in some embodiments, as Figure 2 and Figure 3 shown, the inverter 1 further includes: a partition 115, arranged in the box body 11, separating the installation cavity 114 into a first installation cavity 1141 and a second installation cavity 1142; among them, the circuit board 17 is arranged in the first installation cavity 1141, and the junction box 16 is arranged in the second installation cavity 1142.

[0076] In this embodiment, the inverter 1 further includes a partition 115 which is disposed inside the cabinet 11 and divides the installation cavity 114 into a first installation cavity 1141 and a second installation cavity 1142. Among them, the circuit board 17 is disposed in the first installation cavity 1141, and the junction box 16 is disposed in the second installation cavity 1142. That is to say, the internal space of the cabinet 11 is isolated by the partition 115, and the circuit board 17 and the junction box 16 are separately arranged, which can avoid the heat generated by the circuit board 17 from being transferred to the junction box 16, and at the same time, it can also reduce the electromagnetic interference to the circuit in the junction box 16 and improve the service life of the junction box 16.

[0077] Optionally, in some embodiments, as Figure 1 shown, the inverter 1 further includes: a groove 121 disposed on the side of the cover plate 12 facing the cabinet 11; a protrusion 134 disposed on the side plate 13, and the protrusion 134 can extend into the groove 121 to locate the installation position of the side plate 13.

[0078] In this embodiment, the inverter 1 further includes a groove 121 and a protrusion 134. The groove 121 is disposed on the side of the cover plate 12 facing the cabinet 11, and the protrusion 134 is disposed on the side plate 13, and the protrusion 134 on the side plate 13 can extend deep into the groove 121 of the cover plate 12 to locate the installation position of the side plate 13. That is to say, when installing the side plate 13, the groove 121 and the protrusion 134 are used for preliminary positioning, and then the side plate 13 is fixed by screws or other connecting parts, which can improve the installation accuracy of the side plate 13 and reduce the installation difficulty of the side plate 13.

[0079] Optionally, in some embodiments, the side plate 13 is fixed to the cover plate 12 by using a non-loosening screw. The non-loosening screw is also called a spring screw, a non-loosening screw or an anti-loosening screw. Even in the case of loosening, the non-loosening screw will not fall out of the installation hole, ensuring that the screw will not be lost when disassembling the side plate 13 and improving the disassembly efficiency of the user.

[0080] Optionally, in some embodiments, as Figure 5 shown, the inverter 1 further includes: a mounting bracket 19 disposed on the cabinet 11 and located outside the cabinet 11, and the mounting bracket 19 is used to fix the cabinet 11.

[0081] In this embodiment, the inverter 1 further includes a mounting bracket 19. The mounting bracket 19 is disposed on the cabinet 11 and located outside the cabinet 11, and the mounting bracket 19 is used to fix the cabinet 11. That is to say, the mounting bracket 19 can be disposed on the bottom wall 111 of the cabinet 11 or on the side wall 112 of the cabinet 11. The user can fix the cabinet 11 to the wall through the mounting bracket 19, avoiding the user using an additional mounting bracket 19 to fix the cabinet 11 and facilitating the user to install the cabinet 11.

[0082] Optionally, in some embodiments, the mounting bracket 19 is a metal bracket, which can improve the stability of the fixation of the box body 11. At the same time, by using adjustable bolts to mount the bracket 19, the installation requirements for different thicknesses and strengths can be met.

[0083] An embodiment of the second aspect of the present invention provides an energy storage device 2, as Figure 7 , Figure 8 and Figure 9 shown. The energy storage device 2 includes an inverter 1 as proposed in the first aspect.

[0084] The energy storage device 2 according to the present invention includes an inverter 1 as proposed in the first aspect, and thus has all the beneficial effects of the inverter 1 proposed in the first aspect. Details are not described herein again.

[0085] Optionally, in some embodiments, as Figure 7 , Figure 8 and Figure 9 shown, the energy storage device 2 further includes: an energy storage battery assembly 21, connected to the inverter 1, and the energy storage battery assembly 21 is used for storing electric energy.

[0086] In this embodiment, the energy storage device 2 includes an energy storage battery assembly 21. The energy storage battery assembly 21 is connected to the inverter 1 and is used for storing the electric energy generated by the photovoltaic panel. At the same time, since the photovoltaic panel generates DC high-voltage electricity, directly storing it is likely to damage the energy storage battery assembly 21. Therefore, the inverter 1 converts the DC high-voltage electricity into low-voltage direct current, which is convenient for the energy storage battery assembly 21 to store and improves the service life of the energy storage device 2. In addition, the energy storage battery assembly 21 is installed on the ground, that is, the energy storage battery assembly 21 is in direct contact with the ground, and the inverter 1 is arranged above the energy storage battery assembly 21. Therefore, the mounting bracket 19 does not bear the weight of the inverter 1 itself and only plays a role in restricting the movement of the inverter 1, improving the installation reliability of the energy storage device 2.

[0087] In a specific application, the present application relates to a household energy storage hybrid inverter (inverter 1), including: a box body 11 for installing and fixing a main control circuit for the current conversion function and a junction box, etc.; a face cover (cover plate 12) provided on the upper side of the box body 11 for sealing the box body 11; side plates 13 provided on both sides of the box body 11 for protecting and decorating the junction box 16; a junction box 16 provided on the side wall 112 inside the box body 11 for installing an external connector for the household energy storage device (external connection port 161); a main control circuit board (circuit board 17) provided inside the box body 11; a bracket (mounting bracket 19) provided on the back of the hybrid inverter for fixing the hybrid inverter to the wall.

[0088] The box body 11 is the housing of the hybrid inverter, and the core control conversion circuit and PCBA (Printed Circuit Board Assembly) of the product are arranged inside. The whole box body 11 is a closed structure, with dust and waterproof functions, and the internal and external air pressures are balanced through a breather valve (air pressure balance valve 18).

[0089] The side plates 13 are arranged on the left and right sides of the box body 11, and their functions are as follows: 1. Electrical protection to prevent the connectors on the sides from being accidentally touched, unplugged or inserted wrongly; 2. Electrical wiring limitation. The side plates 13 are provided with slot holes for wiring (wire outlet 15), so that the connection cables between the product and the outside are routed along the fixed slot hole paths; 3. Decorative function to make the whole product beautiful.

[0090] The junction box 16 is installed on the box body 11, and all the external connectors (external ports 161) of the product are concentrated on the junction box 16. The junction box 16 can be independently assembled and then connected to the box body 11. The junction box has a division of strong and weak electricity spaces (the first partition 162 and the second partition 163) to facilitate wiring for different purposes;

[0091] The bracket (mounting bracket 19) is arranged on the back of the box body 11 to fix the box body 11 and the wall, playing a limiting role, but not bearing the gravity of the box body 11.

[0092] The overall structural layout of the household energy storage device (inverter 1) is as Figure 5 shown. The outside of the whole inverter is provided with a box body 11, a face cover (cover plate 12), side plates 13 and a bracket (mounting bracket 19). The box body 11 and the face cover are fastened and fixed to form the main body of the inverter. The whole is a closed structure, with dust and waterproof functions, and the internal and external air pressures are balanced through a breather valve (air pressure balance valve 18). The side plates 13 are arranged on the left and right sides of the box body 11, and the bracket (mounting bracket 19) is arranged on the back of the box body 11.

[0093] As Figure 2 shown, a circuit board 17 is arranged inside the inverter box body, and a junction box 16 is arranged on the side. The junction box 16 concentrates all the strong and weak electricity terminals (external ports 161) for external connection of the internal circuit board 17 on the junction box 16 and conducts electrical connection to the outside uniformly.

[0094] As Figure 4 and Figure 5As shown in the figure, the high-voltage power output area (the first power output port 151) at the upper part of the side plate (the first plate 131) is a square power output port, the lower part of the side plate is a grid-shaped ventilation and heat dissipation hole (the heat dissipation hole 133), and the side surface (the second plate 132) has two semi-circular open power output ports (the second power output port 152). The functions of the side plate are as follows: 1. Electrical protection to prevent the connectors on the side from being accidentally touched, misplugged; 2. Electrical wiring limitation. The side plate 13 is provided with slot holes for wiring (the power output port 15), so that the connection cables between the product and the outside are routed along the fixed slot hole path; 3. Decorative function to make the overall product beautiful.

[0095] As Figure 1 shown, the side plates 13 on both sides of the hybrid inverter (the inverter 1) and the body (the box body 11) can be easily disassembled, and only need to be fixed through the limit slots (the grooves 121) on the side plates 13 and the cover plate (the cover plate 12) and the non-loosening screws on the side plates.

[0096] As Figure 7 、 Figure 8 and Figure 9 shown, the inverter 1 is installed on the wall through the back bracket (the mounting bracket 19). Since the hybrid inverter and the energy storage battery can be integrally assembled (the energy storage device 2), first fix the back bracket to the expansion bolt on the wall, and place the energy storage battery pack (the energy storage battery assembly 21) first, then assemble the hybrid inverter on the energy storage battery pack, and finally fix the back bracket on the wall and the hybrid inverter with screws. This fixing method can effectively fix the hybrid inverter (the inverter 1) and the wall as a whole. And because the hybrid inverter (the inverter 1) is assembled with the energy storage battery pack (the energy storage battery assembly 21) in a floor-mounted manner, the back bracket (the mounting bracket 19) does not bear the gravity of the inverter itself, but only restricts the movement of the inverter, so it can be fixed more effectively.

[0097] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0098] In the present utility model, unless otherwise clearly specified or defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0099] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0100] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the present utility model.

Claims

1. An inverter, characterized in that, Comprising: A box body, including a bottom wall and side walls, the bottom wall and the side walls enclosing an installation cavity, and an opening being provided on the side walls; At least one side plate, disposed on one side of the box body and enclosing a receiving space with the box body, the opening being in communication with the receiving space, and an outlet being provided on the side plate and in communication with the receiving space; A junction box, disposed in the installation cavity and connected to the side wall, an external connection port being provided on one side of the junction box, and the external connection port extending into the receiving space through the opening.

2. The inverter according to claim 1, characterized in that, The external connection port includes a first port and a second port, and the side of the junction box with the external connection port includes a first partition and a second partition, the first port being disposed in the first partition and the second port being disposed in the second partition.

3. The inverter according to claim 1, wherein The outlet includes a first outlet and a second outlet, the opening of the first outlet facing a first direction and the opening of the second outlet facing a second direction.

4. The inverter according to claim 3, wherein The side plate includes: A first plate, the two ends of which in a third direction are respectively connected to the side wall, and a part of the first plate being spaced apart from the side wall; A second plate, connecting one end of the first plate in the second direction and the bottom wall; Wherein, the first outlet is disposed on the first plate, the second outlet is disposed on the second plate, and the first plate and the second plate are detachably connected or are an integral structure.

5. The inverter according to claim 3, characterized in that, It further includes a first cable and a second cable, the voltage on the first cable being greater than the voltage on the second cable, the first outlet being for the first cable to pass through, and the second outlet being for the second cable to pass through.

6. The inverter according to claim 4, characterized in that, The number of the second outlets is multiple, and the opening area of the second outlet is smaller than the opening area of the first outlet.

7. The inverter according to claim 4, wherein, A protection switch is further provided on the side of the junction box with the external connection port, the protection switch being used for cutting off overcurrent or short-circuit current, and the side plate includes: Heat dissipation holes, disposed on the first plate and opposite to the protection switch.

8. The inverter according to any one of claims 1 to 7, characterized in that, It further includes: A cover plate, connected to the box body and used for opening or closing the installation cavity; A circuit board, disposed in the installation cavity; An air pressure balance valve, disposed on the side wall or the bottom wall of the box body and used for balancing the air pressure inside and outside the box body.

9. The inverter according to claim 8, characterized in that, The external connection port includes an access end and an output end, the access end being connected to the circuit board, the output end being connected to an external device, and the junction box being detachably connected to the box body.

10. The inverter according to claim 8, characterized in that, It further includes: A partition, disposed in the box body and separating the installation cavity into a first installation cavity and a second installation cavity; Wherein, the circuit board is disposed in the first installation cavity and the junction box is disposed in the second installation cavity.

11. The inverter according to claim 8, characterized in that, It further includes: A groove, disposed on the side of the cover plate facing the box body; A protrusion, disposed on the side plate, and the protrusion can extend into the groove to position the installation position of the side plate.

12. The inverter according to any one of claims 1 to 7, characterized in that, It further includes: An installation bracket, disposed on the box body and located outside the box body, the installation bracket being used for fixing the box body.

13. An energy storage device, characterized in that, Including the inverter according to any one of claims 1 to 12.

14. The energy storage device according to claim 13, characterized in that, It further includes: An energy storage battery assembly, connected to the inverter, the energy storage battery assembly being used for storing electric energy.

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