Optical storage and power supply integrated machine

Abstract

The application provides a light storage integrated machine, and belongs to the technical field of energy storage. The light storage integrated machine comprises a battery pack and an inverter. The inverter is stacked above the battery pack. The battery pack comprises a first connector and a flue, and the opening of the flue and the first connector are arranged on the two sides of the top wall of the battery pack respectively. The bottom wall of the inverter is provided with a second connector. In the stacking direction of the battery pack and the inverter, the first connector and the second connector are opposite and connected in a plug-in mode, and the bottom wall of the inverter covers the opening of the flue. Since the first connector and the opening of the flue are arranged on the two sides of the top wall of the battery pack respectively, two operators standing on the two sides of the inverter during the stacking process can observe the plug-in connection process of the two connectors and the process that the bottom wall of the inverter covers the opening of the flue respectively. Therefore, the deviation of the butt joint can be found and adjusted in time, the accuracy of the plug-in connection of the two connectors is improved, and the sealing effect of the bottom wall of the inverter on the opening of the flue is improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an integrated photovoltaic and energy storage unit. Background Technology

[0002] A typical photovoltaic-storage integrated system includes a base, multiple battery packs, and an inverter. The battery packs are stacked on top of the base, and the inverter is stacked on top of the battery packs.

[0003] In related technologies, in order to achieve electrical connection between the inverter and the battery pack, connection terminals are provided on the side walls of the battery pack and the inverter, and the connection terminals of the battery pack and the connection terminals of the inverter are electrically connected by cables.

[0004] However, this means that after stacking the inverter on top of the battery pack, it is still necessary to connect the battery pack and the connection terminals on the side wall of the inverter via cables. This not only increases installation time but also poses a risk of incorrect wiring and the cables may age and break after long-term use. Summary of the Invention

[0005] This application provides an integrated photovoltaic and energy storage system. During the process of stacking the inverters of the integrated photovoltaic and energy storage system on top of the battery pack, the electrical connection between the inverters and the battery pack can be automatically established, and the electrical connection has high reliability. The technical solution of the integrated photovoltaic and energy storage system is described below.

[0006] This application provides an integrated photovoltaic and energy storage unit. The integrated unit includes a battery pack and an inverter, with the inverter stacked on top of the battery pack. The battery pack includes a first connector and a flue, with the flue opening (top opening) and the first connector respectively located on opposite sides of the top wall of the battery pack. A second connector is located on the bottom wall of the inverter. In the stacking direction of the battery pack and inverter, the first and second connectors face each other and are interlocked, with the bottom wall of the inverter covering the flue opening.

[0007] The system can consist of one or more battery packs. When there is only one battery pack, the bottom opening of the flue faces the ground, and the top opening of the flue is covered by the bottom wall of the inverter. When there are multiple battery packs, their flues are connected sequentially. Furthermore, the bottom opening of the flue of the lowest battery pack faces the ground, and the top opening of the flue of the highest battery pack is covered by the bottom wall of the inverter.

[0008] The inverter can be moved by two operators, who can stand on both sides of the inverter along its width (i.e., the left and right sides).

[0009] In the technical solution provided in this application, by setting a first connector on the top wall of the battery pack and a second connector on the bottom wall of the inverter, the first and second connectors can be automatically connected during the process of stacking the inverter on top of the battery pack, that is, the electrical connection between the inverter and the battery pack is automatically achieved. This shortens the installation time of the integrated energy storage unit and eliminates the risk of incorrect wiring and the technical problems of cable aging and damage.

[0010] Furthermore, by incorporating a flue into the battery pack, in the event of thermal runaway, the high-temperature gases inside the battery pack can be directionally discharged to the ground through the flue (since the bottom wall of the inverter covers the top opening of the uppermost flue), reducing the possibility of a battery pack explosion. Moreover, because the top opening of the flue and the first connector are located on opposite sides of the top wall of the battery pack, two operators standing on either side of the inverter during stacking can observe the mating process of the first and second connectors, as well as the process of the inverter's bottom wall covering the flue opening. This allows operators to promptly detect and adjust any mating deviations, improving the reliability of the electrical connection and the reliability of the inverter's bottom wall sealing the flue.

[0011] In one implementation, the first connector is located at the rear edge of the top wall of the battery pack. The second connector is located at the rear edge of the bottom wall of the inverter. Thus, after the first and second connectors are mated together, at least part of both connectors are exposed, allowing them to be observed by an operator and providing the possibility for the operator to check whether the first and second connectors are properly aligned.

[0012] In one implementation, the inverter's sidewall is provided with multiple heat dissipation fins that extend along the stacking direction, with some fins positioned above the second connector. Since the heat dissipation fins are exposed, the second connector is also exposed.

[0013] In one implementation, the battery pack housing includes a front cover and a rear cover. The front cover houses the battery modules, and the rear cover houses the power conversion device. The power conversion device converts the output power of the battery modules into power. The rear cover has a first connector and a flue. This allows the first connector to be exposed and facilitates inspection of the reliability of the inverter's bottom wall seal to the flue after connection.

[0014] In one implementation, the first connector includes a first housing and a first terminal, the first terminal being fixed inside the first housing. The second connector includes a second housing and a second terminal, the second terminal being fixed inside the second housing. The second housing is fitted over the outside of the first housing. In the stacking direction of the battery pack and the inverter, the first terminal and the second terminal are mated together.

[0015] In the technical solution provided in this application, the first cover protects the first terminal, and the second cover protects the second terminal. Furthermore, by positioning the upper second cover over the lower first cover, the opening of the gap between the second and first covers faces downwards. This prevents rainwater from easily flowing into the terminal location through the gap between the second and first covers, reducing the risk of short circuits and improving the sealing effect after the first and second connectors are connected.

[0016] In one implementation, the first connector further includes a protective plate. Along the front-rear direction of the battery pack, the protective plate is positioned behind and spaced apart from the first housing. The rear sidewall of the second housing extends into the gap between the first housing and the protective plate. The protective plate effectively blocks the opening in the gap between the second and first housings, thereby further improving the sealing effect after the first and second connectors are mated together.

[0017] In one implementation, the second connector further includes two side guard plates. The two side guard plates protrude rearward relative to the rear sidewall of the second housing, and are positioned opposite each other in the width direction of the inverter. The guard plates extend between the two side guard plates.

[0018] In the technical solution provided in this application, the two side protective plates can block the openings on both sides of the gap between the rear side wall of the second housing and the protective plates, reducing the possibility of rainwater entering the gap between the protective plates and the rear side wall of the second housing. This further improves the sealing effect after the first connector and the second connector are connected.

[0019] In addition, the combination of the protective plate and the two side protective plates can guide the second connector. That is, during the process of placing the inverter on top of the battery pack, it guides the second connector to mate with the first connector, improving the accuracy of the mating between the first and second connectors.

[0020] In one implementation, the battery pack has multiple heat dissipation fins below the protective plate, extending along the stacking direction. An air duct is formed between adjacent heat dissipation fins, and the upper end of the air duct connects to the gap between the protective plate and the first cover. This allows rainwater flowing into the gap between the protective plate and the first cover to be discharged through the air duct.

[0021] In one implementation, a flue cover is provided on the bottom wall of the inverter, and the second connector and the flue cover are respectively located on both sides of the bottom wall of the inverter. The flue cover covers the opening of the flue. By providing a dedicated flue cover to cover the opening of the flue, the sealing effect of the flue cover on the opening of the flue is improved.

[0022] In one implementation, the battery pack further includes two connectors, which are respectively disposed outside the first connector and the flue along the width direction of the battery pack. The inverter also includes two connecting plates, which are respectively disposed outside the second connector and the flue cover along the width direction of the inverter. The two connectors correspond one-to-one with the two connecting plates and are fixedly connected by fasteners.

[0023] In the technical solution provided in this application, since the two connecting plates are located outside the second connector and the flue cover, and the two connecting seats are located outside the first connector and the flue opening, the two connecting plates are positioned adjacent to the second connector and the flue cover, and the two connecting seats are positioned adjacent to the first connector and the flue opening. Thus, the two fastening positions (or connection positions) between the inverter and the battery pack are respectively adjacent to the combination of the first connector and the second connector, and the combination of the flue cover and the flue opening. The fastening force acts almost directly between the first connector and the second connector, and between the flue cover and the flue opening. This improves the robustness of the mating connection between the first connector and the second connector, as well as the sealing effect of the flue cover on the flue opening.

[0024] In one implementation, the two connecting plates are connected to the second connector and the flue cover plate, respectively. This allows the fastening force to act more directly between the first and second connectors, and between the flue cover plate and the flue opening, further improving the robustness of the mating connection between the first and second connectors, as well as the sealing effect of the flue cover plate on the flue opening.

[0025] In one implementation, the connecting plate located outside the second connector extends at an angle from top to bottom, gradually moving away from the second connector. Similarly, the connecting plate located outside the flue cover extends at an angle from top to bottom, gradually moving away from the flue cover. The fastener is a screw, which passes through the connecting plate perpendicular to its direction and is screwed into the connecting seat.

[0026] In the technical solution provided in this application, by tilting the connecting plate and driving the screws at an angle, not only can the inverter and the battery pack be mutually restrained in the horizontal direction, but the clamping force between the inverter and the battery pack in the vertical direction is also increased. This increased clamping force in the vertical direction enhances the clamping effect of the sealing ring between the flue cover and the battery pack, as well as the clamping effect of the sealing ring between the first connector and the second connector, thereby improving sealing reliability.

[0027] In one implementation, a guide groove is formed between the connecting plate located outside the second connector and the second connector, and another guide groove is formed between the connecting plate located outside the flue cover and the flue cover. The two guide grooves are used to receive two connector seats, respectively. The combination of the guide grooves and connector seats enables coarse guidance of the inverter during its descent above the battery pack, achieving preliminary alignment of the second connector and the first connector, as well as preliminary alignment of the flue cover and the flue opening, during the inverter's descent.

[0028] In one implementation, at least one of the two connectors is provided with a positioning pin, and at least one of the two connecting plates is provided with a positioning hole, into which the positioning pin extends. The combination of the positioning pin and the positioning hole enables more precise guidance of the inverter as it falls above the battery pack, improving the accuracy and reliability of the docking between the first and second connectors, as well as the reliability of the flue cover covering the flue opening.

[0029] In one implementation, the integrated photovoltaic and energy storage unit also includes two decorative covers, which are respectively mounted on two side walls and shield the two side walls. The two side walls are positioned opposite each other along the width direction of the inverter.

[0030] In the technical solution provided in this application, two decorative covers are mounted on the two side walls instead of being fixed to the side walls with screws, allowing for quick installation and removal of the decorative covers. The quick installation of the decorative covers saves installation time. The quick removal of the decorative covers ensures that they can be quickly removed in case of emergencies, facilitating emergency maintenance of the inverter's cables and terminals.

[0031] In one implementation, each sidewall is provided with multiple hooks. The side of the decorative cover facing the sidewall has multiple hanging components, each with a hanging groove, the bottom of which is open. Each hook extends into the corresponding hanging groove of the hanging component. This achieves the hanging of the decorative cover.

[0032] In one implementation, a strip-shaped groove is formed on the top wall of the inverter, extending along the front-to-back direction of the inverter. The top of the decorative cover has a flange that bends towards the side wall, and the bottom surface of the flange has a raised rib that extends along the front-to-back direction of the inverter. The raised rib extends into the strip-shaped groove, thus enabling the decorative cover to be mounted.

[0033] In one implementation, in the stacking direction of the battery pack and inverter, the bottom end of the decorative cover abuts against the battery pack, and the hanging pins and the bottom of the hanging slots are spaced apart, as are the protruding strips and the bottom of the strip grooves. In the width direction of the inverter, the hanging pins and the hanging slots mutually limit each other, and the protruding strips and the strip grooves mutually limit each other.

[0034] In the technical solution provided in this application, by pre-reserving design gaps between the bottom of the hanging pin and the groove, and between the bottom of the convex strip and the groove, the hanging pin and the groove will not interfere with the aesthetic cover before the bottom of the aesthetic cover abuts against the battery pack. This ensures that the aesthetic cover can fall naturally under gravity until its bottom abuts against the upper surface of the battery pack, maintaining a very small gap or even a near-fitting fit between the bottom of the aesthetic cover and the battery pack. This avoids affecting the overall appearance consistency and dustproof effect of the integrated photovoltaic and energy storage unit due to excessive gaps.

[0035] In one implementation, at least one of the two sidewalls is provided with a resilient grounding component, which is capable of elastic expansion and contraction in a direction perpendicular to the sidewall and abuts against the decorative cover. The sidewall, the resilient grounding component, and the decorative cover are all conductive.

[0036] In the technical solution provided in this application, the flexible grounding component can always maintain contact with the decorative cover under the action of elasticity, thereby establishing a reliable electrical connection between the side wall and the decorative cover, improving the reliability of inverter grounding. At the same time, since the flexible grounding component only needs to contact the decorative cover without being fixedly connected to it, it does not affect the quick installation and removal of the decorative cover, thus balancing grounding reliability and ease of installation and removal.

[0037] In one implementation, the resilient grounding assembly includes a mounting base, an abutment, and a spring. The mounting base is fixedly connected to a sidewall, the abutment is slidably connected to the mounting base in a direction perpendicular to the sidewall, and the spring is used to drive the abutment to abut against the decorative cover.

[0038] In the technical solution provided in this application, the spring continuously applies elastic force to the abutment, ensuring that the abutment always maintains an extended tendency and guaranteeing the reliability of the contact between the abutment and the decorative cover. Simultaneously, the abutment is slidably connected to the mounting base, allowing the abutment to freely extend and retract during the installation and removal of the decorative cover, avoiding interference with the cover and ensuring the quick-installation and quick-removal function of the cover.

[0039] In one implementation, the inverter has at least two handles of different heights on both sidewalls, and the two sidewalls are arranged opposite each other along the width direction of the inverter.

[0040] In the technical solution provided in this application, by setting multiple handle positions at different heights, operators can flexibly select the appropriate handle position for gripping when the inverter is stacked on top of different numbers of battery packs, based on the actual height of the inverter off the ground, thus maintaining a comfortable gripping posture at all times. Furthermore, each operator can simultaneously use two handle positions on the corresponding side wall to apply force with both hands, making the lifting and lowering processes more stable and effectively reducing the risk of the inverter tipping or overturning during lifting and lowering.

[0041] In one implementation, each sidewall has two handle positions at different heights, with the two upper handle positions on the two sidewalls being at the same height and the two lower handle positions on the two sidewalls being at different heights. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a photovoltaic and energy storage integrated machine in related technologies; Figure 2 and Figure 3 This is a schematic diagram of an integrated optical storage machine provided in an embodiment of this application; Figure 4 This is a schematic diagram of a battery pack and inverter provided in an embodiment of this application; Figure 5 yes Figure 3 A magnified view of the portion enclosed by the dashed box A in the image; Figure 6 This is a schematic diagram of the top of a battery pack provided in an embodiment of this application; Figure 7 This is a schematic diagram of the bottom of an inverter provided in an embodiment of this application; Figure 8 yes Figure 6 A magnified view of the portion enclosed by the dashed box B in the image; Figure 9 yes Figure 7 A magnified view of the part enclosed by the dashed box C in the image; Figure 10 This is a schematic diagram of the back cover of a battery pack provided in an embodiment of this application; Figure 11 This is a schematic diagram of a battery pack flue provided in an embodiment of this application; Figure 12 yes Figure 6 A magnified view of the portion enclosed by the dashed box D in the image; Figure 13 yes Figure 7 A magnified view of the portion enclosed by the dashed box E in the image; Figure 14 This is a schematic diagram of the assembly of a first cover and a second cover provided in an embodiment of this application; Figure 15 This is a schematic diagram of a first cover and a second sealing ring provided in an embodiment of this application; Figure 16 This is a schematic diagram of the bottom of a battery pack provided in an embodiment of this application; Figure 17 yes Figure 16 A magnified view of the part enclosed by the dashed box F in the image; Figure 18 yes Figure 16A magnified view of the portion enclosed by the dashed box G in the image; Figure 19 yes Figure 16 A magnified view of the portion enclosed by the dashed box H in the image; Figure 20 This is a schematic diagram of an inverter and a decorative cover provided in an embodiment of this application; Figure 21 This is a schematic diagram of a left-side beautification cover provided in an embodiment of this application; Figure 22 This is a schematic diagram of a hanging method for a left-side decorative cover provided in an embodiment of this application; Figure 23 This is a schematic diagram of a right-side beautification cover provided in an embodiment of this application; Figure 24 This is a schematic diagram of a hanging method for a right-side decorative cover provided in an embodiment of this application; Figure 25 This is a schematic diagram of a strip groove provided in an embodiment of this application; Figure 26 This is a schematic diagram of an aesthetic cover provided in an embodiment of this application; Figure 27 This is a schematic diagram of a hanging method for a decorative cover provided in an embodiment of this application; Figure 28 This is a schematic diagram illustrating the installation process of the decorative cover and inverter provided in the embodiments of this application; Figure 29 This is a schematic diagram of a resilient grounding component provided in an embodiment of this application; Figure 30 This is a schematic diagram of the handle position on the left side wall of an inverter provided in an embodiment of this application; Figure 31 This is a schematic diagram of the handle position on the right side wall of an inverter provided in an embodiment of this application; Figure 32 This is a schematic diagram of the stacking process of an inverter provided in an embodiment of this application.

[0043] Legend 10. Base; 20. Battery pack; 200. Receiving cavity; 21. Front shell; 22. Rear cover; 221. Connecting seat; 2211. Threaded hole; 2212. Positioning pin; 222. Receiving groove; 223. Connecting rib; 224. First heat dissipation tooth; 2241. Air duct; 2242. Connecting hole; 225. Second connecting plate; 226. Second annular protrusion; 23. First connector; 231. First cover; 2311. Annular groove; 232. First terminal; 233. Protective plate; 24. Flue; 25. Pressure relief valve; 26. First sealing ring; 27. Second sealing ring; 28. Third connector; 281. Third cover; 282. Third terminal; 283. Second side protective plate; 30. Inverter; 301. Left side wall; 302. Right side wall; 31. Rear housing; 311. Flue cover; 3111. First annular protrusion; 312. Connecting plate; 3121. Screw hole; 3122. Positioning hole; 313. Guide groove; 314. Strip groove; 3141. Rib plate; 315. Second heat dissipation tooth; 316. Slot; 32. Front cover; 33. Second connector; 331. Second housing; 3311. Rear side wall; 332. Second terminal; 333. Side protection plate; 34. Hanging nail; 35. Flexible grounding assembly; 351. Mounting base; 352. Abutment; 353. Spring; 36. Handle position; 361. Anti-slip vertical groove; 362. Anti-slip horizontal groove; 37. Third sealing ring; 40. Beautifying cover; 41. Panel; 42. Hanging component; 421. Hanging groove; 43. Flanged edge; 431. Raised strip; 50. Fasteners; 60. Connecting terminals; 70. Fixing plate. Detailed Implementation

[0044] A photovoltaic (PV) and energy storage integrated system combines an inverter and a battery pack. In a photovoltaic power generation system, the integrated system works in conjunction with photovoltaic panels. The direct current (DC) generated by the photovoltaic panels is fed to the inverter, which converts the DC to alternating current (AC) to supply the load. When PV power generation exceeds load demand, excess DC can be fed to the battery pack for storage, or the inverter can convert the DC to AC and feed it into the grid. When PV power generation is insufficient, the battery pack releases DC, which is then converted back to AC by the inverter to supply the load. Furthermore, the inverter can also draw AC from the grid, convert it back to DC, and charge the battery pack. This integrated PV and energy storage system can also be called a residential energy storage integrated system. The inverter can be a photovoltaic inverter, specifically a power conversion system (PCS). This inverter can have both AC-to-DC and DC-to-AC conversion capabilities; that is, it is a bidirectional inverter.

[0045] Figure 1 A schematic diagram of a photovoltaic-storage integrated machine in related technologies is shown. For example... Figure 1 As shown, the integrated photovoltaic and energy storage unit includes a base 10, multiple battery packs 20, and an inverter 30. The multiple battery packs 20 are stacked on top of the base 10, and the inverter 30 is stacked on top of the multiple battery packs 20. After stacking, the integrated photovoltaic and energy storage unit can also be wall-mounted or installed against a wall.

[0046] like Figure 1 As shown, after the photovoltaic-storage integrated unit is stacked, in order to achieve electrical connection between the inverter 30 and the battery pack 20, in related technologies, connection terminals 60 (including positive and negative connection terminals) are provided on the side walls of the battery pack 20 and the inverter 30, and the connection terminals 60 of the battery pack 20 and the inverter 30 are electrically connected via cables. Additionally, as... Figure 1 As shown, the connection terminals 60 of two adjacent battery packs 20 are also electrically connected via cables. For example, Figure 1 As shown, each battery pack 20 has two pairs of connection terminals 60 on its side wall. The upper pair of connection terminals 60 is used to connect to the upper battery pack 20 or inverter 30, and the lower pair of connection terminals 60 is used to connect to the lower battery pack 20. The connection terminals 60 can be power terminals for transmitting electrical energy.

[0047] However, using cables to achieve electrical connections between battery pack 20 and inverter 30, as well as between the two battery packs 20, increases installation time and carries the risk of incorrect wiring. Furthermore, even with protective covers on the outside of the cables, problems such as aging or damage to the cable rubber cannot be completely avoided.

[0048] Secondly, such as Figure 1 As shown, after the photovoltaic-storage integrated unit is stacked, to achieve a secure mechanical connection between the inverter 30 and the battery pack 20, as well as between two adjacent battery packs 20, a fixing plate 70 is used to connect the sidewalls of the inverter 30 and the battery pack 20. Specifically, the fixing plate 70 is fixedly connected to the sidewalls of the inverter 30 and the battery pack 20 by screws, thus achieving a fixed connection between the inverter 30 and the battery pack 20. Similarly, two adjacent battery packs 20 are also fixedly connected using the fixing plate 70.

[0049] However, using a mounting plate 70 to achieve the mechanical connection between the battery pack 20 and the inverter 30, as well as between the two battery packs 20, is cumbersome and increases installation time. Furthermore, the mounting plate 70 cannot provide effective vertical clamping force to the two devices, resulting in poor reliability of the mechanical connection.

[0050] Furthermore, the stacked arrangement of multiple battery packs 20 means that when a single battery pack 20 experiences thermal runaway, it will release a large amount of high-temperature gas and may even cause deflagration. The high-temperature gas and flames will directly impact adjacent battery packs 20, which can easily cause heat spread and lead to thermal runaway of adjacent battery packs 20, further expanding the scope of the hazard and seriously affecting the safety of the entire photovoltaic-storage integrated machine.

[0051] In view of the above-mentioned technical problems, embodiments of this application provide a novel integrated photovoltaic and energy storage system. For example... Figure 2 and Figure 3 As shown, the integrated photovoltaic and energy storage unit includes a battery pack 20 and an inverter 30, with the inverter 30 stacked on top of the battery pack 20. The number of battery packs 20 included in the integrated photovoltaic and energy storage unit is adjustable. When the integrated photovoltaic and energy storage unit includes multiple battery packs 20, the multiple battery packs 20 are stacked along the height direction. The inverter 30 is stacked on top of the uppermost battery pack 20. Alternatively, the integrated photovoltaic and energy storage unit may also include a base 10, with the battery pack 20 and inverter 30 stacked on top of the base 10.

[0052] To facilitate the description of the integrated photovoltaic and energy storage unit provided in this application, the following directions are defined: X, Y, and Z. The X direction is the width direction of the battery pack 20 and inverter 30, which can also be referred to as the left-right direction. The Y direction is the thickness direction of the battery pack 20 and inverter 30, which can also be referred to as the depth direction or the front-back direction. The Z direction is the height direction of the battery pack 20 and inverter 30, which is the stacking direction of the battery pack 20 and inverter 30, and can also be a vertical direction.

[0053] in, Figure 4 A schematic diagram of the battery pack 20 and the inverter 30 is shown. Figure 5 This diagram shows a complete connection of the first connector 23 and the second connector 33. Figure 3 A magnified view of the portion enclosed by the dashed box A in the image. Figure 6 A schematic diagram of the top of the battery pack 20 is shown. Figure 7 A schematic diagram of the bottom of inverter 30 is shown.

[0054] In some examples, such as Figure 4 and Figure 6 As shown, the battery pack 20 includes a first connector 23, which is disposed on the top wall (or top surface, top) of the battery pack 20. Figure 4 and Figure 7 As shown, the inverter 30 includes a second connector 33, which is disposed on the bottom wall (or bottom surface, base) of the inverter 30. Figure 5As shown, in the stacking direction of the battery pack 20 and the inverter 30, the first connector 23 and the second connector 33 are directly opposite each other and plugged in (this can be simply referred to as plugging). In this way, the plugging connection of the first connector 23 and the second connector 33 is achieved simultaneously with stacking the inverter 30 on top of the battery pack 20. This eliminates the need for electrical connections between the battery pack 20 and the inverter 30 via cables after stacking, shortening operation time, eliminating the risk of incorrect wiring, and avoiding the technical problems of cable damage. The first connector 23 and the second connector 33 are used not only for transmitting electrical energy but also for transmitting communication signals.

[0055] In some examples, such as Figure 4 and Figure 6 As shown, the first connector 23 is located on one side of the top wall of the battery pack 20 (one side along the width direction X, i.e., the left or right side). Figure 4 and Figure 7 As shown, the second connector 33 is located on one side of the bottom wall of the inverter 30 (one side along the width direction X, i.e., the left or right side). During the stacking of the inverters 30, two operators can stand on the left and right sides of the inverters 30 respectively and apply force to the inverters 30 to raise or lower them.

[0056] In the technical solution provided in this application embodiment, the first connector 23 is disposed on the left or right side of the top wall of the battery pack 20, and the second connector 33 is disposed on the left or right side of the bottom wall of the inverter 30. This allows an operator to observe the insertion process of the first connector 23 and the second connector 33 during the process of lowering the inverter 30 from above the battery pack 20, i.e., during the insertion operation of the first connector 23 and the second connector 33. Therefore, the operator can promptly detect and adjust any misalignment, achieving precise insertion of the first connector 23 and the second connector 33.

[0057] In some examples, such as Figure 4 and Figure 6 As shown, the first connector 23 is located at the rear edge of the top wall of the battery pack 20. Figure 4 and Figure 7 As shown, the second connector 33 is located at the rear edge of the bottom wall of the inverter 30. This ensures that after the first connector 23 and the second connector 33 are mated, at least a portion of both connectors is exposed and visible to the operator. This provides the operator with the possibility to inspect whether the first connector 23 and the second connector 33 are properly mated.

[0058] In some examples, such as Figure 4 and Figure 6As shown, the sidewall (rear sidewall) of the battery pack 20 is provided with a plurality of first heat dissipation teeth 224. The plurality of first heat dissipation teeth 224 extend along the stacking direction (i.e., the Z direction), and some of the first heat dissipation teeth 224 are located below the first connector 23. Since the first heat dissipation teeth 224 are exposed, the first connector 23 located above the first heat dissipation teeth 224 is also exposed, thereby facilitating the operator to inspect whether the first connector 23 and the second connector 33 are properly connected.

[0059] In some examples, such as Figure 4 and Figure 6 As shown, the battery pack 20's housing includes a front cover 21 and a rear cover 22. The front cover 21 houses the battery module, and the rear cover 22 houses the power conversion device. The power conversion device converts the output power of the battery module. The rear cover 22 is equipped with a first connector 23. The power conversion device housed in the rear cover 22 can be a direct current to direct current converter (DCDC), which can be used to adjust the DC power generated by the photovoltaic panel or the DC power transmitted from the inverter 30 and send it to the battery module for storage, or it can be used to adjust the DC power output from the battery module and send it to the inverter 30.

[0060] In some examples, the back cover 22 can also house the battery management system (BMS).

[0061] In some examples, such as Figure 4 and Figure 7 As shown, the sidewall (rear sidewall) of the inverter 30 is provided with a plurality of second heat dissipation teeth 315. The plurality of second heat dissipation teeth 315 extend along the stacking direction (i.e., the Z direction), and some of the second heat dissipation teeth 315 are located above the second connector 33. Since the second heat dissipation teeth 315 are exposed, the second connector 33 located below the second heat dissipation teeth 315 is also exposed, thereby facilitating the operator to inspect whether the first connector 23 and the second connector 33 are properly connected.

[0062] In some examples, such as Figure 4 and Figure 7 As shown, the inverter 30 housing includes a rear housing 31 and a front cover 32. The rear housing 31 is used to house the power devices of the inverter 30. The front cover 32 is located in front of the rear housing 31 and is used to close the opening in front of the rear housing 31. A second connector 33 may be located in the rear housing 31.

[0063] In addition, to reduce the possibility of explosion in the event of thermal runaway of the battery pack 20, and the possibility of affecting other battery packs 20, the battery pack 20 provided in this embodiment also includes a flue 24. The flue 24 is used to directionally discharge high-temperature gas when thermal runaway occurs in the battery pack 20. In this way, on the one hand, it can prevent the battery pack 20 from exploding, and on the other hand, it can also prevent the high-temperature gas from impacting adjacent battery packs 20 and causing heat spread.

[0064] In some examples, such as Figure 4 and Figure 6 and Figure 8 As shown, the top opening of the flue 24 and the first connector 23 are respectively located on both sides of the top wall of the battery pack 20. Furthermore, the bottom wall of the inverter 30 covers the top opening of the flue 24. Figure 8 for Figure 6 The image shows a magnified view of the portion enclosed by the dashed box B. The flue 24 has a bottom opening and a top opening. When there is only one battery pack 20, the bottom opening of the flue 24 faces the ground, and the top opening of the flue 24 is covered by the bottom wall of the inverter 30. When there are multiple battery packs 20, the flues 24 of the multiple battery packs 20 are connected sequentially. Furthermore, the bottom opening of the flue 24 of the lowermost battery pack 20 faces the ground, and the top opening of the flue 24 of the uppermost battery pack 20 is covered by the bottom wall of the inverter 30.

[0065] In the technical solution provided in this application embodiment, by setting the opening of the flue 24 and the first connector 23 on both sides of the top wall of the battery pack 20, one operator standing on the left and right sides of the inverter 30 can observe the docking process of the first connector 23 and the second connector 33, while the other operator can observe the process of the bottom wall of the inverter 30 covering the opening of the flue 24. This achieves precise docking of the first connector 23 and the second connector 33, and improves the reliability of the bottom wall of the inverter 30 covering the opening of the flue 24, i.e., ensuring the sealing performance of the top opening of the flue 24. Since the bottom wall of the inverter 30 covers the top opening of the flue 24, when the battery pack 20 experiences thermal runaway, the high-temperature gas inside the battery pack 20 can be directionally discharged to the ground through the flue 24, reducing the possibility of the battery pack 20 exploding and affecting other battery packs 20 and the inverter 30.

[0066] In some examples, such as Figure 4 , Figure 7 and Figure 9 As shown, a flue cover plate 311 is provided on the bottom wall of the inverter 30. The flue cover plate 311 is used to cover the opening of the flue 24. Wherein, Figure 9 yes Figure 7 A magnified view of the part enclosed by the dashed box C in the image.

[0067] In some examples, such as Figure 4 and Figure 7 As shown, the second connector 33 and the flue cover 311 are respectively disposed on both sides of the bottom wall of the inverter 30.

[0068] The implementation of flue 24 will now be described in more detail.

[0069] In some examples, such as Figure 10 and Figure 11 As shown, the flue 24 extends along the height of the battery pack 20. The top opening of the flue 24 connects to the flue 24 of the upper battery pack 20, or is sealed by the bottom wall of the inverter 30; the bottom opening of the flue 24 connects to the top opening of the flue 24 of the lower battery pack 20, or faces directly towards the ground. When high-temperature gas enters the flue 24, the gas flows both upwards and downwards simultaneously. The upward-flowing high-temperature gas is blocked by the bottom wall of the inverter 30 and can only flow downwards, thus directing the high-temperature gas towards the ground. Figure 10 This is a schematic diagram of the back cover 22 of the battery pack 20. Figure 11 This is a schematic diagram of the flue 24. The flue 24 can be installed on the rear cover 22.

[0070] In some examples, such as Figure 10 As shown, the battery pack 20 has a receiving cavity 200 inside its housing, which is used to accommodate the battery module and the power conversion device. The receiving cavity 200 has an opening, and a pressure relief valve 25 is provided at the opening (e.g., Figure 10 and Figure 11 (As shown). Under normal conditions, the containment cavity and the flue 24 are separated by the pressure relief valve 25; in the event of thermal runaway, the pressure relief valve 25 is opened by the high-temperature gas, and the high-temperature gas enters the flue 24.

[0071] In some examples, such as Figure 10 and Figure 11 As shown, a receiving groove 222 is provided above the battery pack 20, and a pressure relief valve 25 is provided in the receiving groove 222. The bottom of the receiving groove 222 is provided with the top opening of the flue 24. When the pressure relief valve 25 is opened, high-temperature gas enters the flue 24 through the receiving groove 222 and the top opening of the flue 24.

[0072] In some examples, such as Figure 8 As shown, a connecting rib 223 is provided at the top opening of the flue 24. The connecting rib 223 spans the opening, and the pressure relief valve 25 is installed on the connecting rib 223 by screws.

[0073] In some examples, such as Figure 11As shown, the integrated photovoltaic and energy storage unit also includes a first sealing ring 26, which surrounds the opening of the flue 24 and is pressed between the flue cover plate 311 and the battery pack 20. The first sealing ring 26 improves the sealing performance of the flue cover plate 311 in closing the opening of the flue 24.

[0074] In some examples, such as Figure 8 and Figure 11 As shown, the first sealing ring 26 is arranged around the receiving groove 222. For example, a sealing groove is provided around the receiving groove 222, and the first sealing ring 26 is disposed in the sealing groove. Furthermore, to improve the reliability of the flue cover 311 pressing the first sealing ring 26, such as... Figure 9 As shown, a first annular protrusion 3111 is provided on the lower surface of the flue cover plate 311. The first annular protrusion 3111 is used to compress the first sealing ring 26.

[0075] The implementation methods of the first connector 23 and the second connector 33 are described below by way of example. Figure 12 yes Figure 6 A magnified view of the portion enclosed by the dashed box D in the image. Figure 13 yes Figure 7 A magnified view of the portion enclosed by the dashed box E in the image.

[0076] In some examples, such as Figure 12 As shown, the first connector 23 includes a first housing 231 and a first terminal 232, with the first terminal 232 fixed inside the first housing 231. Figure 13 As shown, the second connector 33 includes a second housing 331 and a second terminal 332, with the second terminal 332 fixed inside the second housing 331. Figure 14 and Figure 5 As shown, the second housing 331 is fitted over the first housing 231. Furthermore, in the stacking direction of the battery pack 20 and the inverter 30, the first terminal 232 and the second terminal 332 are interlocked (not shown in the figure). The first housing 231 may be integrally formed with the housing of the battery pack 20, and the second housing 331 may be integrally formed with the housing of the inverter 30.

[0077] In the technical solution provided in this application embodiment, the first cover 231 and the second cover 331 can protect the first terminal 232 and the second terminal 332. Furthermore, by providing the second cover 331 to be fitted over the first cover 231, such that the opening of the gap between the second cover 331 and the first cover 231 faces downwards instead of upwards, rainwater is less likely to flow into the terminal location through the gap between the second cover 331 and the first cover 231, thus improving the sealing reliability of the first connector 23 and the second connector 33.

[0078] To further improve the sealing between the first housing 231 and the second housing 331, in some examples, such as Figure 12 , Figure 14 and Figure 15 As shown, the integrated photovoltaic and energy storage unit also includes a second sealing ring 27, which surrounds the first housing 231 and presses against the gap between the first housing 231 and the second housing 231. In this way, the second sealing ring 27 can prevent rainwater from flowing into the terminal location from the gap.

[0079] In some examples, such as Figure 15 As shown, an annular groove 2311 is provided on the side wall of the first cover 231, and the second sealing ring 27 is disposed in the annular groove 2311. The annular groove 2311 can reliably limit the second sealing ring 27.

[0080] In some examples, such as Figure 14 As shown, the integrated photovoltaic and energy storage unit also includes a third sealing ring 37, which is pressed between the first housing 231 and the second housing 331 along the mating direction (i.e., the Z direction) of the two connectors. For example, it is pressed between the end face of the first housing 231 and the second housing 331. The third sealing ring 37 also prevents rainwater from flowing into the terminal location.

[0081] In some examples, such as Figure 12 and Figure 15 As shown, the first connector 23 also includes a protective plate 233. Along the front-rear direction (i.e., the Y direction) of the battery pack 20, the protective plate 233 is disposed behind and spaced apart from the first cover 231, and the rear sidewall 3311 of the second cover 331 extends into the gap between the first cover 231 and the protective plate 233. The protective plate 233 can cover the opening of the gap between the second cover 331 and the first cover 231, thereby further improving the sealing reliability after the first connector 23 and the second connector 33 are inserted.

[0082] In some examples, such as Figure 13 As shown, the second connector 33 also includes two side protective plates 333, which protrude rearward relative to the rear sidewall 3311 of the second housing 331, and are arranged opposite to each other in the width direction of the inverter 30. Figure 5 As shown, the protective plate 233 extends between the two side protective plates 333, and the two side protective plates 333 cover the gap between the rear side wall 3311 of the second housing 331 and the protective plate 233 at the openings on both sides. In this way, the sealing reliability of the two connectors is further improved.

[0083] In addition, the combination of the protective plate 233 and the two side protective plates 333 can guide the second connector 33 (or inverter 30). That is, during the process of placing the inverter 30 above the battery pack 20, the second connector 33 is guided to mate with the first connector 23, thereby improving the accuracy and reliability of the mating of the first connector 23 and the second connector 33, and also improving the reliability of the flue cover plate 311 in sealing the opening of the flue 24.

[0084] In some examples, such as Figure 16 and Figure 17 As shown, the battery pack 20 has multiple first heat dissipation fins 224 below the protective plate 233. These fins extend along the stacking direction, and an air duct 2241 is formed between adjacent fins. The upper end of the air duct 2241 connects the gap between the protective plate 233 and the first cover 231. For example,... Figure 16 and Figure 17 As shown, the upper end of the air duct 2241 is connected to the gap between the protective plate 233 and the first cover 231 through the connecting hole 2242. In this way, liquid (such as rainwater) flowing into the space between the protective plate 233 and the first cover 231 can flow out through the connecting hole 2242 into the air duct 2241, so that rainwater will not accumulate between the protective plate 233 and the first cover 231.

[0085] The following is an exemplary description of how the battery pack 20 and the inverter 30 are mechanically connected.

[0086] In some examples, such as Figure 4 and Figure 6 As shown, the battery pack 20 also includes two connectors 221, which are disposed on both sides of the top wall of the battery pack 20. Figure 4 and Figure 7 As shown, the inverter 30 also includes two connecting plates 312, which are respectively disposed on both sides of the bottom wall of the inverter 30. The two connecting plates 312 correspond one-to-one with the two connecting seats 221 and are fixedly connected by fasteners 50 (e.g., ...). Figure 5 and Figure 14 (As shown). For example, fastener 50 is a screw, bolt, or rivet, etc.

[0087] In the technical solution provided in this application embodiment, by setting the battery pack 20 to include a connector 221 and the inverter 30 to include a connector 312, the mechanical connection between the battery pack 20 and the inverter 30 is not required through an additional fixing plate 70, which improves the convenience of the connection operation between the battery pack 20 and the inverter 30 and shortens the installation time.

[0088] In some examples, such as Figure 4 and Figure 6As shown, along the width direction of the battery pack 20, two connectors 221 are respectively disposed on the outer sides of the first connector 23 and the flue 24. Correspondingly, as... Figure 4 and Figure 7 As shown, along the width direction of the inverter 30, two connecting plates 312 are respectively disposed on the outer sides of the second connector 33 and the flue cover 311. Thus, the two connecting seats 221 are respectively disposed adjacent to the first connector 23 and the flue 24, and the two connecting plates 312 are respectively disposed adjacent to the second connector 33 and the flue cover 311. This allows the fastening force generated by the fastener 50 to act more directly between the first connector 23 and the second connector 33, and between the flue cover 311 and the battery pack 20, improving the limiting and sealing effects on these two pairs of connections.

[0089] In some examples, such as Figure 4 , Figure 7 , Figure 9 and Figure 13 As shown, the two connecting plates 312 are respectively connected to the second housing 331 of the second connector 33 and the flue cover 311. In this way, the two connecting plates 312 are closer to the second connector 33 and the flue cover 311, which is more conducive to the fastening force generated by the fastener 50 acting directly between the first connector 23 and the second connector 33, as well as between the flue cover 311 and the battery pack 20.

[0090] In some examples, such as Figure 4 As shown, the two connecting plates 312 gradually extend outwards from top to bottom. For example, the connecting plate 312 located outside the second connector 33 gradually extends outwards from top to bottom in a direction away from the second connector 33. The connecting plate 312 located outside the flue cover 311 gradually extends outwards from top to bottom in a direction away from the flue cover 311. Figure 5 and Figure 14 As shown, the fastener 50 is a screw. For example, the screw passes through the connecting plate 312 in a direction perpendicular to the connecting plate 312 and is screwed into the connecting seat 221.

[0091] In the technical solution provided in this application embodiment, by tilting the connecting plate 312 and driving screws at an angle, the inverter 30 and the battery pack 20 are mutually restrained in the horizontal direction, while also generating a clamping force between the inverter 30 and the battery pack 20 in the vertical direction. For example, Figure 14As shown, the tightening force F generated by the screw can be divided into a horizontal component F1 and a vertical component F2. The horizontal component F1 can limit the inverter 30 and battery pack 20 in the horizontal direction, while the vertical component F2 can increase the clamping force between the inverter 30 and battery pack 20. The increase in the vertical clamping force enhances the clamping effect of the first sealing ring 26 between the flue cover 311 and the battery pack 20, as well as the clamping effect of the third sealing ring 37 between the first connector 23 and the second connector 33, thereby improving the sealing reliability.

[0092] In addition, when the two connecting plates 312 are adjacent to the flue cover plate 311 and the second connector 33, the vertical component of the force generated by the screw can directly act on the second connector 33 and the flue cover plate 311, thereby more effectively increasing the compression effect of the sealing ring and greatly reducing the risk of sealing failure due to improper installation.

[0093] In some examples, such as Figure 8 As shown, the connector 221 is provided with a threaded hole 2211, as... Figure 9 As shown, the connecting plate 312 is provided with a screw through hole 3121. The screw passes through the screw through hole 3121 and is threaded into the threaded hole 2211.

[0094] It is understandable that in the related technologies, the mechanical connection between the battery pack 20 and the inverter 30 is achieved by fixing the plate 70, and the clamping force between the battery pack 20 and the inverter 30 is only the gravity of the inverter 30. However, in the technical solution provided in this application embodiment, the clamping force is the sum of the gravity of the inverter 30 and the vertical component F2 of the fastening force F generated by the screw.

[0095] In some examples, such as Figure 4 As shown, both connecting seats 221 have inclined surfaces, which are used to fit against two inclined connecting plates 312 respectively.

[0096] Understandably, in some other examples, the connecting plate 312 may be set horizontally instead of tilted. This also increases the clamping force of the sealing ring.

[0097] In some examples, such as Figure 4 As shown, a guide groove 313 is formed between the connecting plate 312 on the outer side of the second connector 33 and the second connector 33. Another guide groove 313 is formed between the connecting plate 312 on the outer side of the flue cover 311 and the flue cover 311. The two guide grooves 313 are used to receive the two connecting seats 221 respectively. Wherein, when the connecting plate 312 is inclined, the guide groove 313 can be referred to as a wedge groove, and the connecting seat 221 can be referred to as a wedge connecting seat or a wedge guide block.

[0098] In the technical solution provided in this application embodiment, the combination of guide groove 313 and connector 221 can achieve coarse guidance of inverter 30. This enables the initial alignment of second connector 33 and first connector 23, as well as the initial alignment of flue cover 311 and flue 24, during the descent of inverter 30.

[0099] It should be noted that in other examples, a guide groove 313 can also be considered to be formed between the two inclined connecting plates 312, which is used to receive the two connecting seats 221.

[0100] In some examples, such as Figure 8 As shown, at least one of the two connectors 221 is provided with a locating pin 2212. Figure 9 As shown, at least one of the two connecting plates 312 is provided with a positioning hole 3122. A positioning pin 2212 extends into the positioning hole 3122. The combination of the positioning pin 2212 and the positioning hole 3122 enables more precise guidance of the inverter 30, improves the docking accuracy and reliability of the first connector 23 and the second connector 33, and enhances the reliability of the flue cover plate 311 in sealing the flue 24.

[0101] In some examples, such as Figure 8 As shown, the connecting seat 221 adjacent to the flue 24 is provided with a positioning pin 2212. (As shown...) Figure 9 As shown, the connecting plate 312 adjacent to the flue cover 311 is provided with a positioning hole 3122. In other examples, a positioning pin 2212 may be provided on the connecting seat 221 adjacent to the first connector 23, and a positioning hole 3122 may be provided on the connecting plate 312 adjacent to the second connector 33. Alternatively, positioning pins 2212 may be provided on both connecting seats 221, and positioning holes 3122 may be provided on both connecting plates 312.

[0102] It should be noted that in some other examples, the positions of the positioning pin 2212 and the positioning hole 3122 can be interchanged, that is, the positioning pin 2212 is set on the connecting plate 312 and the positioning hole 3122 is set on the connecting seat 221.

[0103] Below, in conjunction with Figure 4 An exemplary illustration is provided of the process of stacking the inverter 30 on top of the battery pack 20.

[0104] The first step is preliminary preparation.

[0105] The operator lifts the inverter 30 above the battery pack 20 and slowly lowers it for initial alignment. During this step, the operator visually aligns the front and sides of the inverter 30 and battery pack 20 to lay the foundation for precise positioning later.

[0106] The second step involves the guide groove 313 and the connecting seat 221 achieving coarse positioning.

[0107] The operator continues to lower the inverter 30, causing the connector 221 of the battery pack 20 to gradually extend into the guide groove 313 of the inverter 30 for coarse positioning. The inclined design of the connector 312 and the beveled surface of the connector 221 allow for a certain positional tolerance. This enables the inverter 30 to be automatically guided to fine-tune to the docking position during its descent.

[0108] The third step involves using the positioning pin 2212 and the positioning hole 3122 to achieve precise positioning.

[0109] The operator further lowers the inverter 30, allowing the positioning pin 2212 to extend into the positioning hole 3122 for precise positioning. During this process, the first connector 23 and the second connector 33 automatically align and dock. The inverter 30 is then placed on the battery pack 20.

[0110] Fourth step: Secure the inverter 30 and battery pack 20 with screws.

[0111] The operator uses screws to pass through the connecting plate 312 and tighten them in the connecting seat 221 to secure and press the inverter 30 and the battery pack 20 together.

[0112] The stacking method of the inverter 30 and the battery pack 20 has been described above. Below, an exemplary description of the stacking method between two adjacent battery packs 20 will be provided.

[0113] In some examples, such as Figure 16 and Figure 18 As shown, the battery pack 20 also includes a third connector 28, which is disposed on the bottom wall (or bottom surface) of the battery pack 20. In the stacking direction of two adjacent battery packs 20, the third connector 28 and the first connector 23 of the lower battery pack 20 are directly opposite each other and interlocked. In this way, the electrical connection between the two battery packs 20 is achieved simultaneously by stacking one battery pack 20 on top of another, eliminating the need to establish an electrical connection between the two battery packs 20 via cables after stacking, thus simplifying the operation steps and shortening the operation time.

[0114] It should be noted that the multiple battery packs 20 included in the integrated photovoltaic and energy storage unit provided in this application embodiment can be of a normalized design, that is, the structure of each battery pack 20 is the same. For example, Figure 2 and Figure 3 The positions of the four battery packs 20 can be interchanged arbitrarily; for example, the topmost battery pack 20 can be swapped with the bottommost battery pack 20. Therefore, when the first connector 23 is located on one side of the top wall of the battery pack 20, the third connector 28 can be located on one side of the bottom wall of the battery pack 20, with the first connector 23 and the third connector 28 on the same side of the battery pack 20. In this way, during the process of lowering the battery pack 20, that is, during the docking operation of the first connector 23 and the third connector 28, an operator can observe the docking process of the first connector 23 and the third connector 28, thereby enabling timely detection and adjustment of docking deviations, achieving precise docking of the first connector 23 and the third connector 28.

[0115] Furthermore, if the first connector 23 is located at the rear edge of the top wall of the battery pack 20, the third connector 28 can be located at the rear edge of the bottom wall of the battery pack 20. This way, after the first connector 23 and the third connector 28 are mated, at least part of both connectors will be exposed and visible to the operator. This provides the operator with the means to inspect whether the first connector 23 and the third connector 28 are properly mated.

[0116] In some examples, such as Figure 16 As shown, a portion of the first heat dissipation tooth 224 is disposed above the third connector 28.

[0117] In some examples, such as Figure 16 As shown, the rear cover 22 of the battery pack 20 is provided with a third connector 28.

[0118] In some examples, such as Figure 16 and Figure 19 As shown, the bottom wall of the battery pack 20 is also provided with a bottom opening of the flue 24. The bottom opening of the flue 24 is used to connect to the top opening of the flue 24 of the battery pack 20 below.

[0119] In some examples, such as Figure 16 As shown, the openings at the bottom of the third connector 28 and the flue 24 are respectively located on both sides of the bottom wall of the battery pack 20.

[0120] In the technical solution provided in this application embodiment, by setting the bottom opening of the flue 24 and the third connector 28 on both sides of the bottom wall of the battery pack 20, one operator standing on the left and right sides of the inverter 30 can observe the docking process of the first connector 23 and the third connector 28, while the other operator can observe the process of the bottom opening of one flue 24 connecting to the top opening of the other flue 24. This achieves precise docking of the first connector 23 and the third connector 28 and improves the sealing reliability after the two flues 24 are connected.

[0121] In some examples, such as Figure 16 As shown, the opening at the bottom of the flue 24 is also located at the rear edge of the bottom wall of the battery pack 20. In this way, after the two flues 24 are connected, the operator can inspect the mating surfaces of the two flues 24, thereby checking the reliability of the seal.

[0122] In some examples, a first sealing ring 26 is also provided between two adjacent battery packs 20. The position of the first sealing ring 26 can be referred to Figure 10 In addition, the first sealing ring 26 also surrounds the opening at the bottom of the flue 24 of the upper battery pack 20.

[0123] In some examples, such as Figure 16 and Figure 19 As shown, the bottom wall of the battery pack 20 is also provided with a second annular protrusion 226, which is used to compress the first sealing ring 26. The second annular protrusion 226 is arranged around the bottom opening of the flue 24.

[0124] In some examples, such as Figure 16 and Figure 19 As shown, the bottom wall of the battery pack 20 is also provided with two second connecting plates 225, which are used to connect the two connecting seats 221 of another battery pack 20. The structure of the two second connecting plates 225 is the same as that of the two connecting plates 312 (which can be referred to as the first connecting plates) of the inverter 30. For example, the two second connecting plates 225 are also inclined, allowing inclined screws to pass through.

[0125] In some examples, since both the third connector 28 and the second connector 33 can mate with the first connector 23, the structure of the housing of the third connector 28 is the same as the structure of the second housing 331 of the second connector 33. For example, as Figure 16 and Figure 18As shown, the third connector 28 includes a third housing 281, a third terminal 282, and two second side protective plates 283. The structure of the third housing 281 is the same as that of the second housing 331 of the second connector 33. The structures of the two second side protective plates 283 are the same as those of the side protective plates 333 (which may be referred to as the first side protective plates) of the second connector 33.

[0126] In some examples, a second sealing ring 27 and a third sealing ring 37 may be provided between the third housing 281 and the first housing 231, the specific locations of which can be found in [reference needed]. Figure 14 As shown, simply replace the second cover 331 with the third cover 281.

[0127] It should be noted that the left and right side walls of the inverter 30 are not flat. Furthermore, connection terminals and cables (not shown in the figure) need to be routed through either the left side wall 301 or the right side wall 302 of the inverter 30. Therefore, to improve the appearance of the inverter 30, related technologies typically install decorative covers 40 on the left and right side walls of the inverter 30. Simultaneously, the decorative covers 40 also provide some protection for the cables and connection terminals of the inverter 30.

[0128] In related technologies, the decorative cover 40 is typically fixed to the side wall of the inverter 30 using screws. This fixing method is relatively secure and reliable, and the inverter 30 can be electrically connected to the decorative cover 40 via screws. The decorative cover 40 is then grounded through the outer casing of the battery pack 20 stacked below. In other words, the method of fixing the decorative cover 40 with screws in related technologies has the advantages of secure fixing and reliable grounding.

[0129] However, the method of fixing the decorative cover 40 to the inverter 30 with screws makes the installation and removal of the decorative cover 40 very inconvenient and inefficient. More importantly, in an emergency, the decorative cover 40 cannot be quickly removed for emergency maintenance of the inverter 30, posing a significant safety hazard. For example, if the connection terminals or cables covered by the decorative cover 40 catch fire, the decorative cover 40 cannot be quickly removed for emergency cable disconnection.

[0130] To solve the above technical problems, such as Figure 20 As shown in the embodiment of this application, two decorative covers 40 are respectively mounted on two side walls. These two side walls are arranged opposite each other along the width direction of the inverter 30. The two side walls are the left side wall 301 and the right side wall 302.

[0131] In the technical solution provided in this application embodiment, by setting two decorative covers 40 to be hung on two side walls instead of fixing them to the side walls with screws, the decorative covers 40 can be quickly installed and removed. The quick installation of the decorative covers 40 saves installation time; the quick removal of the decorative covers 40 ensures that they can be quickly removed in case of emergencies, facilitating emergency maintenance operations on the inverter 30's cables and connection terminals, and minimizing potential damage.

[0132] This application does not limit the implementation method of mounting the beautifying cover 40 on the side wall. In some examples, such as Figure 21 and Figure 23 As shown, the decorative cover 40 has multiple hanging components 42 on the side facing the side wall. Each hanging component 42 has a hanging groove 421, the bottom of which is open. Figure 21 The beautification mask 40 shown is the one on the left. Figure 23 The beautification mask 40 shown is the one on the right. For example... Figure 22 and Figure 24 As shown, each sidewall is provided with multiple hanging nails 34. Among them, Figure 22 The sidewall shown is the left sidewall 301. Figure 24 The side wall shown is the right side wall 302. Each hook 34 extends into the corresponding hanging groove 421 of the mounting piece 42, thereby realizing the mounting of the decorative cover 40. It should be noted that... Figure 22 and Figure 24 The beautification cover 40 shown is in a transparent state. The beautification cover 40 also includes a plate 41, which is the main body of the beautification cover 40 and is used to cover the side wall of the inverter 30.

[0133] In some examples, such as Figure 21 and Figure 23 As shown, the beautification cover 40 has two hanging members 42 at its front edge and one hanging member 42 at its rear edge. For example, the hanging member 42 at the rear edge of the beautification cover 40 is lower than the two hanging members 42 at the front edge.

[0134] In some examples, such as Figure 22 As shown, a recessed groove 316 is provided on the left side wall 301 for receiving the hanging component 42. The hanging nail 34 is disposed in the recessed groove 316.

[0135] In some examples, such as Figure 22 , Figure 23 and Figure 25 As shown, the top wall of the inverter 30 has a strip-shaped groove 314, which extends along the front-to-back direction (i.e., the Y direction) of the inverter. Figure 26 and Figure 27As shown, the top of the beautification cover 40 is provided with a flange 43 that bends towards the side wall, and the bottom surface of the flange 43 is provided with a protruding strip 431 that extends along the front-rear direction of the inverter 30. Figure 27 As shown, the protrusion 431 extends into the strip groove 314, thereby realizing the hanging of the beautification cover 40.

[0136] In some examples, such as Figure 25 As shown, a plurality of stiffening plates 3141 are provided in the strip groove 314, and the plurality of stiffening plates 3141 are arranged at intervals along the length direction of the strip groove 314. The protruding strip 431 is used to extend into the space between the plurality of stiffening plates 3141 and the groove wall of the strip groove 314.

[0137] It should be noted that, in the technical solutions provided in this application embodiment, the beautifying cover 40 can be installed by using only the hanging nail 34 and the hanging part 42, or by using only the convex strip 431 and the strip groove 314, or by using both of the above methods at the same time.

[0138] In some examples, in the stacking direction of the battery pack 20 and the inverter 30, the bottom end of the decorative cover 40 abuts against the battery pack 20, while the hanging pin 34 is spaced apart from the bottom of the hanging groove 421, and / or, the protruding strip 431 is spaced apart from the bottom of the strip groove 314 (e.g.) Figure 27 (As shown). That is to say, in the vertical direction (Z direction), the battery pack 20 limits the enclosure 40, while the mounting pins 34 and the mounting slots 421 provide almost no limitation on the enclosure 40. Furthermore, in the width direction (X direction) of the inverter 30, the mounting pins 34 and the mounting slots 421 mutually limit each other, and the protrusions 431 and the strip grooves 314 mutually limit each other to prevent the enclosure 40 from detaching from the inverter 30.

[0139] In the technical solution provided in this application embodiment, by reserving design gaps between the bottom of the hanging nail 34 and the groove 421, and between the bottom of the protruding strip 431 and the groove 314, the hanging nail 34 and the groove 314 will not interfere with the beautification cover 40 before its bottom end abuts against the battery pack 20. This ensures that the beautification cover 40 can fall naturally under gravity until its bottom end abuts against the upper surface of the battery pack 20, maintaining a very small gap or even a near-fitting fit between the bottom end of the beautification cover 40 and the battery pack 20. This avoids affecting the overall appearance consistency and dustproof effect of the integrated photovoltaic and energy storage unit due to excessively large gaps.

[0140] Below, in conjunction with Figure 28 The installation process of the beautification cover 40 is illustrated by way of example.

[0141] First, the beautification cover 40 is moved toward the side wall of the inverter 30, so that the multiple mounting parts 42 of the beautification cover 40 are respectively positioned above the multiple mounting pins 34 of the inverter 30 (e.g., Figure 28 (As shown).

[0142] Then, the decorative cover 40 is moved downwards, causing multiple hooks 34 to enter the hanging grooves 421 through the openings at the bottom of the hanging slots 421 of the multiple mounting parts 42. Simultaneously, the protrusions 431 on the flange 43 of the decorative cover 40 enter the strip grooves 314. In this way, the hooks 34 and the strip grooves 314 can limit the decorative cover 40, preventing it from accidentally falling off. This mechanical limiting method ensures the stability of the decorative cover 40 after installation.

[0143] Finally, the decorative cover 40 is released, and under its own weight, its bottom end automatically adheres to the upper surface of the battery pack 20. This allows the decorative cover 40 to seamlessly align with the battery pack 20. This process eliminates the need for manual adjustments by the operator, reducing workload.

[0144] This application does not limit the material of the decorative cover 40, as long as it meets the fire resistance and structural strength requirements. In some examples, the decorative cover 40 is made of metal. Metal effectively isolates external fire sources from the cables and interfaces of the inverter 30, significantly improving the safety protection level of the inverter 30. The metal material can be aluminum alloy, stainless steel, etc. In other examples, the decorative cover 40 is made of flame-retardant engineering plastics or composite materials, etc.

[0145] The manufacturing process of the beautifying cover 40 is not limited in this application embodiment. For example, sheet metal stamping, profile extrusion, die casting or 3D printing, etc.

[0146] Furthermore, the design concept of the aesthetic cover 40 and its quick-release structure provided in this application embodiment can also be extended to the front door or side panel of a server rack. Specifically, the front door or side panel of the server rack can be made of metal and designed for hanging installation. This ensures both the protection level and fire safety of the server rack in harsh industrial environments, while also allowing operators to quickly disassemble and inspect internal components without the need for tools, thereby improving maintenance convenience while ensuring safety.

[0147] In addition, to improve the reliability of inverter 30 grounding, in some examples, such as Figure 29 As shown, the inverter 30 also includes a resilient grounding component 35, which is disposed on at least one of the left and right side walls. The resilient grounding component 35 is elastically expandable and contractible in a direction perpendicular to the side wall and abuts against the decorative cover 40. Both the decorative cover 40 and the resilient grounding component 35 are conductive. The side walls of the inverter 30 are also conductive. For example, the resilient grounding component 35 is disposed on both the left side wall 301 and the right side wall 302 of the inverter 30.

[0148] In the technical solution provided in this application embodiment, the elastic grounding component 35 can abut against the decorative cover 40 under the action of elasticity, thereby improving the reliability of the elastic grounding component 35 abutting against the decorative cover 40, and thus improving the reliability of the inverter 30 grounding. Furthermore, since the elastic grounding component 35 only abuts against the decorative cover 40 and is not fixedly connected to it, the elastic grounding component 35 will not affect the quick assembly and disassembly of the decorative cover 40. That is, the elastic grounding component 35 provided in this application embodiment solves the technical problem of reliable grounding of the decorative cover 40 under conditions of quick assembly and disassembly, achieving a balance between protective performance and ease of maintenance, so that even if the decorative cover 40 is not fixedly connected to the side wall of the inverter 30 by screws, the inverter 30 can still be reliably grounded.

[0149] This application does not limit the specific implementation of the resilient grounding component 35. In some examples, such as Figure 29 As shown, the resilient grounding assembly 35 includes a mounting base 351, an abutment member 352, and a spring 353. The mounting base 351 is fixedly connected to the side wall, and the abutment member 352 is slidably connected to the mounting base 351 in a direction perpendicular to the side wall. The spring 353 is used to drive the abutment member 352 to abut against the decorative cover 40. Figure 29 The elastic grounding component 35 shown can also be referred to as a spring pin.

[0150] In some examples, such as Figure 29 As shown, the mounting base 351 is provided with a sliding groove, and the abutment 352 passes through the sliding groove and is slidably connected with the mounting base 351.

[0151] In some examples, the mounting base 351 is threaded to the sidewall, thereby improving the reliability of the fixed connection between the mounting base 351 and the sidewall.

[0152] Apart from Figure 29 In addition to the technical solutions shown, in other examples, the resilient grounding component 35 can also be a resilient conductive element such as a metal spring or conductive rubber.

[0153] This application does not limit the implementation of the conductivity of the decorative cover 40. In some examples, the decorative cover 40 is made of metal, such as sheet metal. To improve the corrosion resistance of the decorative cover 40, a coating can be applied to its surface. This coating is insulating, and can be removed from the portion of the decorative cover 40 used to abut the resilient grounding component 35, forming a conductive exposed area to ensure electrical connection between the resilient grounding component 35 and the decorative cover 40.

[0154] In other examples, the beautification cover 40 may also be made of an insulating material, and a conductive coating may be provided on the surface of the beautification cover 40 to make the beautification cover 40 conductive.

[0155] It should be noted that during the process of stacking the inverter 30 on top of the battery pack 20, operators need to move and lift the inverter 30. As the size and weight of the inverter 30 increase, the stacking operation, which could originally be completed by one person, now often requires two people, increasing the operational difficulty. Therefore, to facilitate the handling and lifting of the inverter 30, related technologies will install symmetrical handles on the left and right sides of the inverter 30, allowing operators to grip the handles for moving and lifting the inverter 30.

[0156] However, since the number of battery packs 20 stacked below the inverter 30 is selectable, the operator's lifting posture differs depending on the number of battery packs 20 stacked on top. In related technologies, only one handle is provided on each of the left and right side walls of the inverter 30. The handles are fixed in position and height, failing to accommodate different operator postures at varying stacking heights. This leads to inconvenience in applying force at certain heights, and may even cause unbalanced force on the inverter 30, posing a risk of it tipping over. Furthermore, at higher stacking heights, each operator can only grasp one handle, making it difficult to find a suitable point of application with the other hand, causing the inverter 30 to easily tip over during lifting due to uneven force.

[0157] To facilitate the operator in lifting the inverter 30, in some examples, such as Figure 30 and Figure 31 As shown, the inverter 30 has at least two handle positions 36 of different heights on both its left and right sides. The inverter 30 can be stacked by two operators, who can stand on the left and right sides of the inverter 30 respectively and lift the inverter 30 by using the handle positions 36 on the corresponding side walls.

[0158] In the technical solution provided in this application embodiment, by setting multiple handle positions 36 of different heights on the left and right side walls of the inverter 30, operators can choose a handle position 36 of suitable height for gripping at different stacking heights, always maintaining a comfortable force application posture. Furthermore, when lifted by two people, each operator can simultaneously use two handle positions 36 on the corresponding side wall, applying force with both hands, one above and one below, making lifting more stable and effortless. This ensures that the inverter 30 remains balanced during lifting, preventing tipping and falling due to uneven force, thus improving installation safety and operational convenience.

[0159] Furthermore, the handle position 36 is directly formed on the side wall of the inverter 30, eliminating the need for additional handles or other components, thus reducing material costs and assembly steps. The handle position 36 can also be referred to as a handle lift.

[0160] In some examples, such as Figure 30 and Figure 31As shown, each side wall is provided with two handle positions 36 of different heights.

[0161] In some examples, such as Figure 30 and Figure 31 As shown, the two upper handle positions 36 on the two side walls are at the same height, while the two lower handle positions 36 on the two side walls are at different heights.

[0162] In some examples, such as Figure 30 and Figure 31 As shown, the height of the handle position 36 located below the right side wall 302 is higher than the height of the handle position 36 located below the left side wall 301.

[0163] In some examples, such as Figure 30 and Figure 31 As shown, the handle 36 has multiple anti-slip textures. This provides operators with a firm grip point when handling the inverter 30, reducing the possibility of the inverter 30 tipping over, tipping over, or the operator losing their grip, thus improving handling safety and ergonomics.

[0164] In some examples, such as Figure 30 and Figure 31 As shown, some of the multiple handle positions 36 are provided with multiple anti-slip vertical grooves 361, while others are provided with multiple anti-slip horizontal grooves 362. When an operator inserts their fingers into a handle position 36, the extension direction of the anti-slip vertical grooves 361 is approximately parallel to the extension direction of the operator's fingers, while the extension direction of the anti-slip horizontal grooves 362 is approximately perpendicular to the extension direction of the operator's fingers. The anti-slip vertical grooves 361 are mainly used to prevent the inverter 30 from tipping over or tilting during lifting. The anti-slip horizontal grooves 362 are mainly used to prevent the inverter 30 from slipping out of the hand during handling.

[0165] In some examples, such as Figure 30 and Figure 31 As shown, the anti-slip vertical stripes 361 extend in a direction parallel to the width of the inverter 30, and multiple anti-slip vertical stripes 361 are arranged at intervals along the front-back direction of the inverter 30.

[0166] In some examples, such as Figure 31 As shown, the anti-slip horizontal stripes 362 extend in a direction parallel to the front-back direction of the inverter 30, and multiple anti-slip horizontal stripes 362 are arranged at intervals along the width direction of the inverter 30.

[0167] In some examples, such as Figure 30 As shown, the two handle positions 36 on the side wall near the second connector 33 are provided with anti-slip vertical grooves 361. Figure 31As shown, the upper handle position 36 on the side wall near the flue cover 311 is provided with anti-slip vertical grooves 361, and the lower handle position 36 is provided with anti-slip horizontal grooves 362.

[0168] Below, in conjunction with the appendix Figure 32 The stacking process of the inverter 30 provided in this application embodiment is described by way of example. Wherein, examples include... Figure 32 As shown, the inverter 30 is used to stack on top of four stacked battery packs 20. The inverter 30 is stacked together by operator A and operator B, who stand on opposite sides of the inverter 30 along the width direction, with operator A standing on the left side and close to the second connector 33, and operator B standing on the right side and close to the flue cover 311.

[0169] First, operator A lifts the upper handle on the left side wall with his left hand, and operator B lifts the upper handle on the right side wall with his right hand. The two of them work together to lift the inverter 30 off the ground.

[0170] Then, operator A holds the upper latch on the left side wall with his left hand and lifts the lower latch on the left side wall with his right hand; operator B lifts the upper latch on the right side wall with his right hand and holds the lower latch on the right side wall with his left hand. Both operators maintain this posture and continue to raise inverter 30.

[0171] As inverter 30 continues to be raised, operator A holds the upper handle on the left side wall with his left hand and supports the lower handle on the left side wall with his right hand; operator B holds the upper handle on the right side wall with his right hand and supports the lower handle on the right side wall with his left hand.

[0172] Continue raising the inverter 30. At this point, operator A holds the upper latch on the left side wall with their left hand and supports the lower latch on the left side wall with their right hand; operator B holds the upper latch on the right side wall with their right hand and the lower latch on the right side wall with their left hand. Now, stack the inverter 30 on top of the battery pack 20.

[0173] It should be noted that the multi-height handle structure provided in this application embodiment is not only applicable to the handling scenario of the inverter 30 described above, but its design concept can also be extended to the handling structure of equipment such as large cabinets. For example, based on this concept, embedded lifting points or adjustable handling handles can be set on the side wall of the cabinet to adapt to the handling needs of different lifting equipment and space conditions, thereby improving the flexibility and adaptability of equipment handling.

[0174] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A photovoltaic-storage integrated machine, characterized in that, The integrated photovoltaic and energy storage unit includes a battery pack (20) and an inverter (30), with the inverter (30) stacked on top of the battery pack (20); The battery pack (20) includes a first connector (23) and a flue (24), with the opening of the flue (24) and the first connector (23) respectively disposed on both sides of the top wall of the battery pack (20); The bottom wall of the inverter (30) is provided with a second connector (33). In the stacking direction of the battery pack (20) and the inverter (30), the first connector (23) and the second connector (33) are facing each other and plugged in, and the bottom wall of the inverter (30) covers the opening of the flue (24).

2. The integrated photovoltaic and energy storage unit according to claim 1, characterized in that, The first connector (23) is disposed on the rear edge of the top wall of the battery pack (20), and the second connector (33) is disposed on the rear edge of the bottom wall of the inverter (30).

3. The integrated photovoltaic and energy storage unit according to claim 1 or 2, characterized in that, The inverter (30) has a plurality of heat dissipation teeth on its sidewall, which extend along the stacking direction and some of the heat dissipation teeth are disposed above the second connector (33).

4. The integrated photovoltaic and energy storage unit according to any one of claims 1-3, characterized in that, The housing of the battery pack (20) includes a front shell (21) and a rear cover (22). The front shell (21) is used to house the battery module, and the rear cover (22) is used to house the power conversion device. The power conversion device is used to convert the output power of the battery module. The rear cover (22) is provided with the first connector (23) and the flue (24).

5. The integrated photovoltaic and energy storage unit according to any one of claims 1-4, characterized in that, The first connector (23) includes a first housing (231) and a first terminal (232), the first terminal (232) being fixed inside the first housing (231); The second connector (33) includes a second housing (331) and a second terminal (332), the second terminal (332) being fixed inside the second housing (331); The second housing (331) is fitted over the first housing (231), and the first terminal (232) and the second terminal (332) are plugged into each other in the stacking direction of the battery pack (20) and the inverter (30).

6. The integrated photovoltaic and energy storage unit according to claim 5, characterized in that, The first connector (23) also includes a protective plate (233), which is disposed behind the first cover (231) and spaced apart from the first cover (231) along the front-rear direction of the battery pack (20). The rear sidewall (3311) of the second cover (331) extends into the gap between the first cover (231) and the protective plate (233).

7. The integrated photovoltaic and energy storage unit according to claim 6, characterized in that, The second connector (33) also includes two side guard plates (333), which protrude rearward relative to the rear sidewall of the second housing (331), and the two side guard plates (333) are arranged opposite to each other in the width direction of the inverter (30); The protective plate (233) extends between the two side protective plates (333).

8. The integrated photovoltaic and energy storage unit according to claim 6 or 7, characterized in that, The battery pack (20) has multiple heat dissipation teeth below the protective plate (233). The multiple heat dissipation teeth extend along the stacking direction, and an air duct (2241) is formed between two adjacent heat dissipation teeth. The upper end of the air duct (2241) connects the gap between the protective plate (233) and the first cover (231).

9. The integrated photovoltaic and energy storage unit according to any one of claims 1-8, characterized in that, The bottom wall of the inverter (30) is provided with a flue cover plate (311), and the second connector (33) and the flue cover plate (311) are respectively provided on both sides of the bottom wall of the inverter (30); The flue cover (311) covers the opening of the flue (24).

10. The integrated photovoltaic and energy storage system according to claim 9, characterized in that, The battery pack (20) also includes two connectors (221), which are respectively disposed on the outside of the first connector (23) and the flue (24) along the width direction of the battery pack (20); The inverter (30) also includes two connecting plates (312), which are respectively disposed on the outside of the second connector (33) and the flue cover (311) along the width direction of the inverter (30); The two connecting seats (221) correspond one-to-one with the two connecting plates (312) and are fixedly connected by fasteners (50).

11. The integrated photovoltaic and energy storage system according to claim 10, characterized in that, The two connecting plates (312) are respectively connected to the second connector (33) and the flue cover plate (311).

12. The integrated photovoltaic and energy storage unit according to claim 10 or 11, characterized in that, The connecting plate (312) located outside the second connector (33) extends gradually from top to bottom in a direction away from the second connector (33); The connecting plate (312) located outside the flue cover (311) extends gradually from top to bottom in a direction away from the flue cover (311); The fastener (50) is a screw that passes through the connecting plate (312) in a direction perpendicular to the connecting plate (312) and is screwed into the connecting seat (221).

13. The integrated photovoltaic and energy storage system according to claim 12, characterized in that, A guide groove (313) is formed between the connecting plate (312) located outside the second connector (33) and the second connector (33), and another guide groove (313) is formed between the connecting plate (312) located outside the flue cover (311) and the flue cover (311). The two guide slots (313) are respectively used to receive the two connecting seats (221).

14. The integrated photovoltaic and energy storage unit according to any one of claims 10-13, characterized in that, At least one of the two connecting seats (221) is provided with a positioning pin (2212), and at least one of the two connecting plates (312) is provided with a positioning hole (3122), the positioning pin (2212) extending into the positioning hole (3122).

15. The integrated photovoltaic and energy storage unit according to any one of claims 1-14, characterized in that, The integrated photovoltaic and energy storage unit also includes two decorative covers (40), which are respectively mounted on two side walls and cover the two side walls. The two side walls are arranged opposite each other along the width direction of the inverter (30).

16. The integrated photovoltaic and energy storage system according to claim 15, characterized in that, Each of the sidewalls is provided with a plurality of hooks (34); The beautification cover (40) has multiple hanging parts (42) on the side facing the side wall. The hanging parts (42) have hanging grooves (421) with the bottom end of the hanging grooves (421) open. Each of the aforementioned pins (34) extends into the corresponding hanging slot (421) of the hanging component (42).

17. The integrated photovoltaic and energy storage system according to claim 16, characterized in that, The top wall of the inverter (30) is provided with a strip groove (314), which extends along the front-back direction of the inverter; The top of the beautification cover (40) is provided with a flange (43) that bends toward the side wall, and the bottom surface of the flange (43) is provided with a ridge (431) that extends along the front-back direction of the inverter. The protrusion (431) extends into the groove (314).

18. The integrated photovoltaic and energy storage system according to claim 16 or 17, characterized in that, In the stacking direction of the battery pack (20) and the inverter (30), the bottom end of the beautification cover (40) abuts against the battery pack (20), the hanging pin (34) is spaced apart from the bottom of the hanging groove (421), and the protruding strip (431) is spaced apart from the bottom of the strip groove (314). In the width direction of the inverter (30), the hanging pin (34) and the hanging groove (421) are mutually limited, and the protruding strip (431) and the strip groove (314) are mutually limited.

19. The integrated photovoltaic and energy storage unit according to any one of claims 16-18, characterized in that, At least one of the two sidewalls is provided with an elastic grounding component (35), which is capable of elastic extension and retraction in a direction perpendicular to the sidewall and abuts against the beautification cover (40). The at least one sidewall, the elastic grounding component (35) and the beautification cover (40) are all conductive.

20. The integrated photovoltaic and energy storage system according to claim 19, characterized in that, The resilient grounding assembly (35) includes a mounting base (351), an abutment (352), and a spring (353); The mounting base (351) is fixedly connected to the side wall, the abutment (352) is slidably connected to the mounting base (351) in a direction perpendicular to the side wall, and the spring (353) is used to drive the abutment (352) to abut against the beautification cover (40).

21. The integrated photovoltaic and energy storage unit according to any one of claims 1-20, characterized in that, The inverter (30) has at least two handles (36) of different heights on both side walls, wherein the two side walls are arranged opposite each other along the width direction of the inverter (30).

22. The integrated photovoltaic and energy storage system according to claim 21, characterized in that, Each of the two sidewalls is provided with two handle positions (36) of different heights, and the two handle positions (36) located at the top of the two sidewalls are at the same height, while the two handle positions (36) located at the bottom of the two sidewalls are at different heights.

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