Stacked battery pack and energy storage system

Abstract

The utility model relates to battery technology field especially, and more particularly relates to a kind of stacked battery pack and energy storage system.The stacked battery pack includes battery module, box cover, pedestal and connecting component. Among them, the top of box cover is provided with positioning protrusion.Pedestal is detachably connected with box cover and is enclosed into accommodating chamber, and battery module is arranged in accommodating chamber;The side of pedestal away from box cover is provided with positioning slot, and positioning protrusion is matched with positioning slot, to make two adjacent stacked battery packs stacked arrangement.In two adjacent stacked battery packs, one end of connecting component is connected with the box cover of one stacked battery pack, and the other end of connecting component is connected with the pedestal and / or box cover of another stacked battery pack.Two adjacent stacked battery packs can be stacked arrangement, and then do not need to be installed on battery rack, improve the dismounting convenience of stacked battery pack, achieve the purpose of cost saving.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a stacked battery pack and energy storage system. Background Technology

[0002] Current energy storage systems typically consist of multiple battery packs and battery racks. The battery packs are individually secured to the racks using bolts and other components. This makes the installation process cumbersome, increases the complexity of disassembly and assembly, and hinders subsequent maintenance and replacement of the battery packs. Furthermore, the battery rack configuration in existing technologies also adds to the manufacturing cost of the energy storage system.

[0003] Therefore, there is an urgent need to design a stacked battery pack and energy storage system to solve the above technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a stackable battery pack, in which two adjacent stackable battery packs can be stacked together without needing to be installed on a battery rack, thereby improving the ease of assembly and disassembly of the stackable battery pack and achieving the goal of saving costs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] On one hand, this utility model provides a stacked battery pack, comprising:

[0007] Battery module;

[0008] The lid of the box has a positioning protrusion on its top.

[0009] The base is detachably connected to the cover and forms a receiving cavity, and the battery module is disposed in the receiving cavity; a positioning groove is provided on the side of the base away from the cover, and the positioning protrusion is adapted to the positioning groove so that two adjacent stacked battery packs are stacked.

[0010] A connecting assembly, in two adjacent stacked battery packs, wherein one end of the connecting assembly is connected to the cover of one of the stacked battery packs, and the other end of the connecting assembly is connected to the base and / or cover of the other stacked battery pack.

[0011] As an alternative technical solution for stacked battery packs, in two adjacent stacked battery packs, the base and / or cover of one of the stacked battery packs extends out of the connecting assembly, and the protruding end of the connecting assembly is connected to the cover of the other stacked battery pack.

[0012] As an optional technical solution for stacked battery packs, the cover is provided with a first groove, the base is provided with a second groove, the first groove is provided with a first fixing hole, and the second groove is provided with a second fixing hole; the connecting assembly includes a connecting plate, a first fixing member and a second fixing member, one end of the first fixing member passes through the connecting plate and is connected to the first fixing hole, one end of the second fixing member passes through the connecting plate and is connected to the second fixing hole, and the connecting plate is located in the first groove and the second groove.

[0013] As an optional technical solution for stacked battery packs, the cover includes a support beam, an insulation layer, and a cover body. The support beam is disposed within the cover body, and the insulation layer is disposed between the support beam and the cover body.

[0014] As an optional technical solution for stacked battery packs, the insulation layer includes an inner sealing plate and thermal insulation rock wool. The thermal insulation rock wool is disposed on one side of the inner sealing plate, and the side of the inner sealing plate opposite to the thermal insulation rock wool is connected to the support beam.

[0015] As an optional technical solution for stacked battery packs, the top and side walls of the cover are each provided with at least one reinforcing protrusion.

[0016] As an optional technical solution for stacked battery packs, a battery management unit is also provided in the accommodating cavity, and the battery management unit is electrically connected to the battery module; a maintenance window is also provided on the side wall of the cover, and the maintenance window is positioned facing the battery management unit; a first protective cover is also provided on the cover, and the first protective cover is detachably connected to the maintenance window.

[0017] As an optional technical solution for a stacked battery pack, the cover is also provided with a communication interface, and the communication interface and the maintenance window are both located on the same side of the cover; the stacked battery pack also includes a second protective cover, which covers the communication interface and the first protective cover.

[0018] As an optional technical solution for a stacked battery pack, the stacked battery pack further includes a sealing ring disposed between the base and the cover, so that the cover is connected to the base and the sealing ring is compressed.

[0019] As an optional technical solution for stacked battery packs, a liquid cooling plate is provided on the base, the battery module is mounted on the liquid cooling plate, and the liquid cooling plate is thermally connected to the battery module and the base.

[0020] Two adjacent stacked battery packs are stacked together, with the base of one stacked battery pack being thermally connected to the cover of the other stacked battery pack.

[0021] On the other hand, this utility model provides an energy storage system, which includes an electrical compartment and multiple stacked battery packs as described above. The multiple stacked battery packs are stacked to form a battery cluster, and the electrical compartment is located on top or at the bottom of the battery cluster.

[0022] The beneficial effects of this utility model include at least the following:

[0023] This utility model provides a stacked battery pack, which includes a battery module, a cover, a base, and a connecting assembly. The top of the cover has a positioning protrusion. The base is detachably connected to the cover and forms a receiving cavity, in which the battery module is disposed. A positioning groove is provided on the side of the base opposite to the cover, and the positioning protrusion mates with the positioning groove to allow adjacent stacked battery packs to be stacked. In the two adjacent stacked battery packs, one end of the connecting assembly is connected to the cover of one of the stacked battery packs, and the other end of the connecting assembly is connected to the base and / or cover of the other stacked battery pack.

[0024] As described above, adjacent stacked battery packs are directly stacked via positioning protrusions on the cover and positioning slots on the base, eliminating the need for battery racks and related installation steps in traditional technologies, greatly improving stacking convenience. The positioning protrusions on the top of the cover and the positioning slots on the side of the base opposite the cover work together to quickly and accurately align adjacent stacked battery packs during stacking. Even in complex environments such as outdoors, operators can easily stack multiple battery packs together without the need for complex positioning tools and equipment, reducing the skill requirements for operators and improving work efficiency. Simultaneously, the elimination of battery racks reduces the number of parts, achieving cost savings. Furthermore, one end of the connecting component connects to the cover of one stacked battery pack, and the other end connects to the base and / or cover of another stacked battery pack, further enhancing the tightness and integrity of the connection between adjacent stacked battery packs. When the stacked battery packs are subjected to external forces, the connecting component tightly connects each stacked battery pack together to resist the external forces, improving stability and reliability, and ensuring the safety and stability of the stacked battery packs during long-term use.

[0025] This utility model also provides an energy storage system that is easy to install and disassemble, thus achieving cost savings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the energy storage system provided in an embodiment of the present invention;

[0028] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0030] Figure 4 This is a schematic diagram of the stacked battery pack provided in an embodiment of the present invention;

[0031] Figure 5 This is a bottom view of the stacked battery pack provided in this embodiment of the utility model;

[0032] Figure 6 This is a top view of the stacked battery pack provided in this embodiment of the present invention;

[0033] Figure 7 This is an exploded view of the stacked battery pack provided in this embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the box lid provided in an embodiment of this utility model;

[0035] Figure 9 This is an exploded view of the box lid provided in an embodiment of this utility model.

[0036] Figure Labels

[0037] 10. Battery module;

[0038] 20. Box lid; 21. Positioning protrusion; 22. First groove; 23. First fixing hole; 24. Support beam; 25. Insulation layer; 251. Inner sealing plate; 252. Thermal insulation rock wool; 26. Cover body; 261. Reinforcing protrusion; 262. Maintenance window; 263. First protective cover; 264. Communication interface;

[0039] 30. Base; 31. Positioning groove; 32. Second groove; 33. Second fixing hole;

[0040] 40. Connecting component; 41. Connecting plate; 42. First fastener; 43. Second fastener;

[0041] 50. Battery Management Unit; 60. Second Protective Cover; 70. Sealing Ring; 80. Liquid Cooling Plate; 90. Electrical Compartment. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0049] This embodiment provides a stackable battery pack, in which two adjacent stackable battery packs can be stacked together without needing to be installed on a battery rack, thus improving the ease of installation and removal of the stackable battery pack and achieving the goal of saving costs.

[0050] like Figures 1-6 As shown, the stacked battery pack mainly includes a battery module 10, a cover 20, a base 30, and a connecting assembly 40. The top of the cover 20 has a positioning protrusion 21. The base 30 is detachably connected to the cover 20 and forms a receiving cavity, in which the battery module 10 is disposed. A positioning groove 31 is provided on the side of the base 30 opposite to the cover 20, and the positioning protrusion 21 is adapted to the positioning groove 31 to allow adjacent stacked battery packs to be stacked. In two adjacent stacked battery packs, one end of the connecting assembly 40 is connected to the cover 20 of one of the stacked battery packs, and the other end of the connecting assembly 40 is connected to the base 30 and / or the cover 20 of the other stacked battery pack.

[0051] Based on the above design, in this embodiment, two adjacent stacked battery packs can be directly stacked by matching the positioning protrusion 21 on the cover 20 with the positioning groove 31 on the base 30, eliminating the need for battery racks and related installation steps in traditional technologies, greatly improving the convenience of stacking. The positioning protrusion 21 on the top of the cover 20 and the positioning groove 31 on the side of the base 30 opposite to the cover 20 cooperate with each other, enabling quick and accurate alignment of the positions of two adjacent stacked battery packs during stacking. Even in complex environments such as outdoors, operators can easily stack multiple stacked battery packs together without the need for complex positioning tools and equipment, reducing the skill requirements for operators and improving work efficiency. At the same time, since no battery rack is needed, the number of parts can be reduced, achieving cost savings. In addition, one end of the connecting component 40 is connected to the cover 20 of one of the stacked battery packs, and the other end is connected to the base 30 and / or cover 20 of another stacked battery pack, further enhancing the tightness and integrity of the connection between adjacent stacked battery packs. When the stacked battery pack is subjected to external force, the connecting component 40 can tightly connect the individual stacked battery packs together to resist the external force, improve stability and reliability, and ensure the safety and stability of the stacked battery pack during long-term use.

[0052] In some optional embodiments, four positioning protrusions 21 are evenly distributed at the four corners of the top of the cover 20, forming a truncated pyramid structure. The dimensions of the truncated pyramid structure can be set to an upper base length of 30mm, a lower base length of 40mm, and a height of 20mm. Positioning grooves 31 are correspondingly provided at the four corners of the bottom of the base 30, with a groove depth of 20mm, and the inner contour of the groove matches the positioning protrusions 21.

[0053] In some alternative embodiments, in two adjacent stacked battery packs, one end of the connecting component 40 in this embodiment can be connected to the cover 20 of one of the stacked battery packs, and the other end can be connected to the base 30 of the other stacked battery pack; it can also be connected to the cover 20 of the other stacked battery pack; or it can be connected to both the base 30 and the cover 20 of the other stacked battery pack at the same time, thereby improving the flexibility and adaptability of the connecting component 40 in connecting to the stacked battery packs.

[0054] For example, when the other end of the connecting component 40 is simultaneously connected to the base 30 and the cover 20 of another stacked battery pack, the connecting component 40 also serves to connect the base 30 and the cover 20, thereby improving the reliability and stability of the connection between the base 30 and the cover 20.

[0055] In some alternative embodiments, welding can be used to weld the two ends of the connecting component 40 to two adjacent stacked battery packs respectively, so as to improve the stability and reliability of the stacking assembly of two adjacent stacked battery packs.

[0056] In some alternative embodiments, in two adjacent stacked battery packs, the connecting component 40 is formed by extending outward from the base 30 and / or cover 20 of one stacked battery pack, and the protruding end of the connecting component 40 is connected to the cover 20 of the other stacked battery pack. That is, the connecting component 40 is integrally formed with one of the stacked battery packs, and the protruding end of the connecting component 40 is connected to the cover 20 of the other stacked battery pack. This simplifies the assembly process and improves the stacking efficiency of two adjacent stacked battery packs.

[0057] like Figures 1-3 As shown, in this embodiment, the box cover 20 is provided with a first groove 22, and the base 30 is provided with a second groove 32. The first groove 22 is provided with a first fixing hole 23, and the second groove 32 is provided with a second fixing hole 33. The connecting component 40 includes a connecting plate 41, a first fixing member 42, and a second fixing member 43. One end of the first fixing member 42 passes through the connecting plate 41 and is connected to the first fixing hole 23, and one end of the second fixing member 43 passes through the connecting plate 41 and is connected to the second fixing hole 33. The connecting plate 41 is located in the first groove 22 and the second groove 32.

[0058] The first groove 22 and the second groove 32 are designed to embed the connecting plate 41 within them, preventing the connecting component 40 from protruding from the surface of the stacked battery pack, reducing space occupation, and preventing damage to the connecting plate 41 from external collisions. Simultaneously, the first groove 22 and the second groove 32 limit the connection plate 41, preventing displacement during connection and improving installation accuracy. The first fixing member 42 and the second fixing member 43 rigidly connect the cover 20 of adjacent stacked battery packs to the base 30 via the connecting plate 41, further enhancing the structural strength after stacking.

[0059] Optionally, in this embodiment, the connecting plate 41 can be a steel plate, and the first fixing member 42 and the second fixing member 43 can be screws.

[0060] like Figures 7-9 As shown, in this embodiment, the box cover 20 includes a support beam 24, an insulation layer 25, and a cover body 26. The support beam 24 is disposed inside the cover body 26, and the insulation layer 25 is disposed between the support beam 24 and the cover body 26.

[0061] The support beam 24 enhances the structural strength of the cover 20, enabling it to withstand the weight of the stacked battery packs above, thus solving the problem of weak impact resistance in traditional battery packs. The insulation layer 25, filled between the support beam 24 and the cover 26, forms a thermal barrier, reducing heat exchange between the interior and exterior of the enclosure and giving the stacked battery pack its own insulation capability, eliminating the need for a traditional energy storage compartment. The cover 26, as the outer structure, protects the internal support beam 24 and insulation layer 25, improving the corrosion and aging resistance of the cover 20.

[0062] Specifically, the support beam 24 consists of four transverse and two longitudinal steel square tubes welded together to form a grid-like frame, which is embedded within the cover 26. The cover 26 is made of stainless steel to improve the mechanical strength of the lid 20.

[0063] like Figure 9 As shown, the insulation layer 25 includes an inner sealing plate 251 and heat-insulating rock wool 252. The heat-insulating rock wool 252 is disposed on one side of the inner sealing plate 251, and the side of the inner sealing plate 251 facing away from the heat-insulating rock wool 252 is connected to the support beam 24.

[0064] The inner sealing plate 251 wraps and secures the insulating rock wool 252, preventing it from falling off or breaking during transportation or use, and ensuring the structural stability of the insulation layer 25. The inner sealing plate 251 connects to the support beam 24, tightly confining the insulation layer 25 between the support beam 24 and the cover 26, reducing the gap between the insulation layer 25 and the internal structure of the cover 20, and improving insulation efficiency. The inner sealing plate 251 is made of a material with low thermal conductivity, which further reduces heat transfer and enhances the overall insulation effect.

[0065] For example, the inner sealing plate 251 can be an aluminum plate, fixed to the support beam 24 by rivets. Insulating rock wool 252 is cut to a size matching the inner sealing plate 251 and filled between the inner sealing plate 251 and the cover 26, with the edges of the insulating rock wool 252 flush with the sides of the inner sealing plate 251. Preferably, the surface of the inner sealing plate 251 is passivated to improve corrosion resistance and prevent chemical reactions from occurring upon contact with the insulating rock wool 252.

[0066] In some alternative implementations, the insulating rock wool 252 in this embodiment can also be replaced by polyurethane foam.

[0067] like Figures 7-9 As shown, the top and side walls of the cover 26 are provided with at least one reinforcing protrusion 261, which can enhance the deformation resistance of the cover 26 and improve the load-bearing performance and mechanical impact resistance of the box cover 20.

[0068] The reinforcing bulge 261 can disperse the pressure during stacking, preventing the lid 26 from denting due to excessive local stress and extending the service life of the lid 20. In addition, the reinforcing bulge 261 can also increase the coefficient of friction of the lid 26 surface, thereby improving the anti-slip effect during stacking.

[0069] For example, the top of the cover 26 may be provided with four diamond-shaped reinforcing protrusions 261, and the sidewalls of the cover 26 may be provided with two rectangular reinforcing protrusions 261.

[0070] Optionally, the reinforcing bulge 261 is integrally formed with the cover 26 by a stamping process, and the edges are rounded to avoid stress concentration.

[0071] like Figure 7 As shown, in this embodiment, a battery management unit 50 is also provided in the accommodating cavity, and the battery management unit 50 is electrically connected to the battery module 10; a maintenance window 262 is also provided on the side wall of the cover 26, and the maintenance window 262 is positioned directly opposite the battery management unit 50; a first protective cover 263 is also provided on the cover 26, and the first protective cover 263 is detachably connected to the maintenance window 262.

[0072] The maintenance window 262 faces the battery management unit 50, allowing for inspection and adjustment of the battery management unit 50 without disassembling and modifying the stacked battery pack, simplifying the subsequent maintenance process. The first protective cover 263 is detachably connected to the maintenance window 262, which not only prevents outdoor dust and rainwater from entering the housing chamber, but also allows for quick removal during maintenance, balancing protection and convenience.

[0073] It should be noted that the battery management unit 50 in this embodiment is a conventional component in the art, and its structure and working principle will not be described in detail here.

[0074] like Figure 7 As shown, in this embodiment, the cover 26 is also provided with a communication interface 264, and the communication interface 264 and the maintenance window 262 are both located on the same side of the cover 26. The stacked battery pack also includes a second protective cover 60, which covers the communication interface 264 and the first protective cover 263. The second protective cover 60 completely covers the communication interface 264 and the first protective cover 263, realizing centralized protection of the key external components (communication interface 264 and maintenance window 262) of the stacked battery pack, simplifying the protection structure, avoiding direct exposure of the communication interface 264 (including high-voltage wiring harness and communication wiring harness) to the outdoor environment, and reducing the risk of damage to the communication interface 264 due to collisions and rain.

[0075] Optionally, in this embodiment, both the first protective cover 263 and the second protective cover 60 are made of stainless steel.

[0076] like Figure 7As shown, the stacked battery pack also includes a sealing ring 70, which is disposed between the base 30 and the cover 20, so that the cover 20 is connected to the base 30 and compresses the sealing ring 70. After being compressed by the base 30 and the cover 20, the sealing ring 70 forms a sealing barrier, effectively preventing outdoor dust and rainwater from entering the housing chamber, improving the sealing performance of the stacked battery pack to meet the needs of direct outdoor use.

[0077] In some alternative embodiments, the sealing ring 70 is made of nitrile rubber and the surface of the sealing ring 70 is coated with silicone grease to improve the smoothness of assembly and enhance the fit with the cover 20 and the base 30.

[0078] like Figure 7 As shown, in this embodiment, a liquid cooling plate 80 is provided on the base 30, and the battery module 10 is disposed on the liquid cooling plate 80. The liquid cooling plate 80 is thermally connected to the battery module 10 and the base 30. Two adjacent stacked battery packs are stacked, and the base 30 in one stacked battery pack is thermally connected to the cover 20 in the other stacked battery pack.

[0079] The liquid cooling plate 80 is thermally connected to the battery module 10 and the base 30. When adjacent battery packs are stacked, the base 30 and the cover 20 conduct heat, forming a heat transfer path of "upper battery module 10 - liquid cooling plate 80 - base 30 - cover 20 - lower battery module 10", achieving double-sided liquid cooling and significantly improving heat dissipation efficiency. The liquid cooling plate 80 is sandwiched between two adjacent stacked battery packs, which can simultaneously dissipate heat for both the upper and lower battery modules 10, improving heat dissipation efficiency.

[0080] In some alternative embodiments, the liquid cooling plate 80 is made of aluminum alloy, and the interior of the liquid cooling plate 80 has an S-shaped flow channel. Thermally conductive structural adhesive is applied between the bottom of the battery module 10 and the liquid cooling plate 80, and between the liquid cooling plate 80 and the base 30. The base 30 can be made of stainless steel or aluminum alloy.

[0081] like Figure 1 As shown, this embodiment also provides an energy storage system, which includes an electrical compartment 90 and multiple stacked battery packs as described above. The multiple stacked battery packs are stacked to form a battery cluster, and the electrical compartment 90 is disposed on the top or bottom of the battery cluster.

[0082] By stacking multiple battery packs to form battery clusters, and combining them with electrical compartments 90 at the top or bottom, a complete energy storage system is formed. This eliminates the need for traditional energy storage compartments and battery racks, thereby reducing the size of the energy storage system, making it more compact, and improving space utilization. It also improves the ease of assembly and disassembly, saving costs.

[0083] Furthermore, in this embodiment, the electrical compartment 90 and the battery cluster are also fixed together by the connecting component 40, making assembly and disassembly convenient. Meanwhile, the electrical compartment 90 can be positioned at the top or bottom of the battery cluster, allowing for flexible layout according to actual needs and optimizing the overall structure of the energy storage system.

[0084] In some alternative implementations, the electrical compartment 90 is sized to match the stacked battery pack, and uses an IP65-rated sheet metal enclosure to house components such as inverters, fuses, and explosion-proof valves. The wiring harnesses within the electrical compartment 90 are connected to the stacked battery pack via high-voltage and communication harnesses within a second protective cover.

[0085] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0086] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A stacked battery pack, characterized in that, include: Battery module (10); Box lid (20), the top of which is provided with a positioning protrusion (21); A base (30) is detachably connected to the cover (20) and forms a receiving cavity, wherein the battery module (10) is disposed in the receiving cavity; a positioning groove (31) is provided on the side of the base (30) away from the cover (20), and the positioning protrusion (21) is adapted to the positioning groove (31) so that two adjacent stacked battery packs are stacked; A connecting component (40) is provided in two adjacent stacked battery packs. One end of the connecting component (40) is connected to the cover (20) of one of the stacked battery packs, and the other end of the connecting component (40) is connected to the base (30) and / or cover (20) of the other stacked battery pack.

2. The stacked battery pack according to claim 1, characterized in that, In two adjacent stacked battery packs, the base (30) and / or cover (20) of one of the stacked battery packs extends out of the connecting assembly (40), the protruding end of the connecting assembly (40) being connected to the cover (20) of the other stacked battery pack.

3. The stacked battery pack according to claim 1, characterized in that, The box cover (20) is provided with a first groove (22), and the base (30) is provided with a second groove (32). The first groove (22) is provided with a first fixing hole (23), and the second groove (32) is provided with a second fixing hole (33). The connecting assembly (40) includes a connecting plate (41), a first fixing member (42), and a second fixing member (43). One end of the first fixing member (42) passes through the connecting plate (41) and is connected to the first fixing hole (23). One end of the second fixing member (43) passes through the connecting plate (41) and is connected to the second fixing hole (33). The connecting plate (41) is located in the first groove (22) and the second groove (32).

4. The stacked battery pack according to claim 1, characterized in that, The box cover (20) includes a support beam (24), an insulation layer (25), and a cover body (26). The support beam (24) is disposed inside the cover body (26), and the insulation layer (25) is disposed between the support beam (24) and the cover body (26).

5. The stacked battery pack according to claim 4, characterized in that, The insulation layer (25) includes an inner sealing plate (251) and heat-insulating rock wool (252). The heat-insulating rock wool (252) is disposed on one side of the inner sealing plate (251), and the side of the inner sealing plate (251) facing away from the heat-insulating rock wool (252) is connected to the support beam (24).

6. The stacked battery pack according to claim 4, characterized in that, The top and side walls of the cover (26) are each provided with at least one reinforcing protrusion (261).

7. The stacked battery pack according to claim 4, characterized in that, The accommodating cavity is also provided with a battery management unit (50), which is electrically connected to the battery module (10); a maintenance window (262) is also provided on the side wall of the cover (26), which is positioned directly opposite the battery management unit (50); a first protective cover (263) is also provided on the cover (26), which is detachably connected to the maintenance window (262).

8. The stacked battery pack according to claim 7, characterized in that, The cover (26) is also provided with a communication interface (264), and the communication interface (264) and the maintenance window (262) are both located on the same side of the cover (26); the stacked battery pack also includes a second protective cover (60), which covers the communication interface (264) and the first protective cover (263).

9. The stacked battery pack according to claim 1, characterized in that, The stacked battery pack also includes a sealing ring (70) disposed between the base (30) and the cover (20) to connect the cover (20) to the base (30) and press the sealing ring (70).

10. The stacked battery pack according to claim 1, characterized in that, A liquid cooling plate (80) is provided on the base (30), and the battery module (10) is disposed on the liquid cooling plate (80). The liquid cooling plate (80) is thermally connected to the battery module (10) and the base (30). Two adjacent stacked battery packs are stacked, with the base (30) of one stacked battery pack being thermally connected to the cover (20) of the other stacked battery pack.

11. An energy storage system, characterized in that, The energy storage system includes an electrical compartment (90) and a plurality of stacked battery packs as described in any one of claims 1-10, wherein the plurality of stacked battery packs are stacked and arranged to form a battery cluster, and the electrical compartment (90) is disposed on top of or at the bottom of the battery cluster.

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