Energy storage power supply

Abstract

To provide an energy storage power supply that can reduce costs and reduce product size. by simplifying an installation procedure while reducing the number of related components.SOLUTION: An energy storage power supply includes: a case that is a case in which a first positioning part is provided on an inner wall of the case, the first positioning part and the case have an integrated structure, and the first positioning part includes a positioning groove; a plurality of battery cells that is a plurality of battery cells in which each of the battery cells including a first end and a second end opposite to the first end, the battery cells have two electrodes, and the first end of the battery cells is inserted into the first positioning part; a fastener in which a plurality of second positioning parts is formed, in which the second positioning parts fix a second end of the battery cell; a bus bar electrically connected to two electrodes of the battery cell; and an inverter provided on the battery cell, electrically connected to the battery cell, and configured to convert a DC electricity from the battery cell into an AC electricity.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] TECHNICAL FIELD This application relates to the field of energy storage technology, and in particular to energy storage power sources. [Background technology]

[0002] In related art, a battery pack includes a case and a battery module, and the battery module is fixed to the case using screws or the like. The battery module is assembled with components such as battery cells, battery cell brackets, bus bars, collecting plates, and screws. When assembling a battery pack, the battery module is first assembled using each component, and then the battery module is fixed into the case. However, such a battery pack involves a large number and variety of related structural components and multiple assembly processes, which increases costs. In addition, because installation space is reserved, the product's space utilization rate is low and the overall product size is large. Summary of the Invention [Problem to be solved by the invention]

[0003] The present application provides an energy storage power source that can solve at least one of the above-mentioned existing technical problems. [Means for solving the problem]

[0004] In the energy storage power supply provided by an embodiment of the present application, The first case and at least one first battery cell provided in the first case, each of the first battery cells including two electrodes located on the same side of the first battery cell; a bus bar located on the same side of the first battery cell, electrically connecting the two electrodes and connecting a plurality of the first battery cells in series and / or parallel.

[0005] In the above-mentioned energy storage power supply, the two electrodes are located on the same side of the first battery cell and are electrically connected by a bus bar, which reduces the welding space, simplifies the structure of the energy storage power supply, and increases the space utilization rate.

[0006] In some embodiments, the at least one battery cell includes a plurality of sheet-shaped battery cells or a plurality of cylindrical battery cells.

[0007] In some embodiments, one of the two electrodes is a positive electrode and the other is a negative electrode.

[0008] In some embodiments, the energy storage power source includes a bracket, the bracket including a limiting groove, the bracket is attached to the top of the battery cell so that the two electrodes pass through the limiting groove, and the bus bar is attached to the bracket.

[0009] In some embodiments, the case includes a housing cavity, a positioning portion is provided in the housing cavity, a positioning groove is provided in the positioning portion, and the at least one battery cell is housed in the positioning groove.

[0010] In some embodiments, the energy storage power source includes a fixing adhesive, the fixing adhesive being located in the locating groove and fixingly connecting the battery cell to a sidewall of the locating groove.

[0011] In some embodiments, the case includes a first housing and a second housing, the first housing is removably connected to the second housing to surround and form the accommodating cavity, and the positioning portion is provided on the first housing or the second housing.

[0012] In the energy storage power supply provided by an embodiment of the present application, a second case, the second case having a second positioning portion provided on an inner wall of the second case; at least one second battery cell, a first end of the at least one second battery cell being inserted into the second positioning portion, and two electrodes being provided on a second end of the at least one second battery cell opposite to the first end; a fastener for fastening the second end of the at least one second battery cell; and an electrical connection component electrically connected to the second end of the at least one second battery cell.

[0013] In the above-described energy-storage power supply, a second positioning portion may be provided on the inner wall of the second case, and the first end of the second battery cell may be directly inserted into the second positioning portion, eliminating the need to fasten it with a bracket and then assemble it to the second case. This reduces the number of components, simplifies the installation procedure, reduces costs, and reduces the volume of the energy-storage power supply. Furthermore, the second end of the second battery cell may be fastened with a fastener and connected to an electrical connection component, thereby achieving overall fastening and electrical connection of the second battery cell within the second case.

[0014] Additional aspects and advantages of the present application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present application.

[0015] The above and / or additional aspects and advantages of the present application will become apparent and be easily understood from the following description of the embodiments based on the drawings. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a structural schematic diagram of an energy storage power supply according to an embodiment of the present application; [Figure 2] 1 is a schematic diagram of the internal structure of an energy storage power supply according to an embodiment of the present application; [Figure 3] FIG. 2 is a structural schematic diagram of a first housing according to an embodiment of the present application. [Figure 4]1 is an exploded schematic view of an energy storage power supply according to an embodiment of the present application; [Figure 5] FIG. 2 is another exploded schematic view of an energy storage power supply according to an embodiment of the present application. [Figure 6] FIG. 2 is another exploded schematic view of an energy storage power supply according to an embodiment of the present application. [Figure 7] 1 is a structural schematic diagram of a cylindrical battery cell according to an embodiment of the present application; [Figure 8] FIG. 2 is a structural schematic diagram of a first housing according to an embodiment of the present application. [Figure 9] FIG. 2 is a structural schematic diagram of a first housing according to an embodiment of the present application. [Figure 10] FIG. 2 is a structural schematic diagram of a first housing according to an embodiment of the present application. [Figure 11] 1 is an exploded schematic diagram of an energy storage power supply according to an embodiment of the present application; [Figure 12] 1 is a three-dimensional assembly schematic diagram of an energy storage power supply according to an embodiment of the present application; [Figure 13] 1 is a three-dimensional assembly schematic diagram of an energy storage power supply according to an embodiment of the present application; [Figure 14] 1 is a top view of a positioning portion provided on an inner bottom wall of a case according to an embodiment of the present application. [Figure 15] 1 is a top view of a positioning portion provided on an inner bottom wall of a case according to an embodiment of the present application. [Figure 16] 1 is a top view of a positioning portion provided on an inner bottom wall of a case according to an embodiment of the present application. [Figure 17] 1 is a top view of a positioning portion provided on an inner bottom wall of a case according to an embodiment of the present application. [Figure 18] 1 is an overhead view of an integrated bracket provided on an inner wall of a case according to an embodiment of the present application. [Figure 19] 1 is an overhead view of an integrated bracket provided on an inner wall of a case according to an embodiment of the present application. [Figure 20] 1 is an overhead view of an integrated bracket provided on an inner wall of a case according to an embodiment of the present application. [Figure 21] 1 is an overhead view of an integrated bracket provided on an inner wall of a case according to an embodiment of the present application. [Figure 22] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application. [Figure 23] FIG. 2 is another exploded schematic diagram of an energy storage power supply according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0017]

[0023] The embodiments of the present application will be described in detail below. Examples of the described embodiments are shown in the drawings, and the same or similar numbers throughout the drawings indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are used only to interpret the present application, and cannot be understood as limiting the present application.

[0018] The disclosure below provides many different embodiments or examples for realizing different configurations of the present application. To simplify the disclosure of the present application, specific example components and installations will be described. Of course, these are merely examples and are not intended to be limitations on the present application. Furthermore, the present application may use repeated reference numerals and / or letters in different examples; this repetition is for the purpose of simplifying and clarifying the description and does not necessarily indicate a relationship between the various embodiments and / or installations discussed. Furthermore, while the present application provides examples of specific processes and materials, those skilled in the art may recognize the application of other processes and / or the use of other materials.

[0019] Additionally, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implying the number of technical features. Thus, a feature qualified as "first" or "second" may be expressly or implying that it includes one or more features. In the description of this application, "plurality" means two or more unless specifically qualified otherwise.

[0020] In the description herein, the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in the embodiment or example are included in one or more of the embodiments or examples of the present application. The denotative expressions of the above terms in the description herein do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics may be combined in any suitable manner in any one or more of the embodiments or examples.

[0021] In the description of this application, orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," etc. are based on the orientations or positional relationships shown in the figures, and are intended solely to explain and simplify the description of this application, and do not indicate or imply that the designated devices or elements must have a particular orientation or be constructed or operate in a particular direction, and therefore should not be construed as limitations of this application.

[0022] In this application, unless otherwise expressly specified or limited, the expression "above" or "below" a second feature includes not only cases where the first and second features are in direct contact with each other, but also cases where they are not in direct contact but are in contact via another intervening feature. Furthermore, a first feature being "above," "upper," or "on the upper surface" of a second feature means that the first feature is located directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being "below," "below," or "on the lower surface" of a second feature means that the first feature is located directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0023] In the description of this application, unless otherwise clearly specified or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense. For example, they may be fixed, detachable, or integral connections, mechanical or electrical connections, direct connections, or indirect connections via an intermediate medium, or internal communication or interacting relationships between two elements. Those skilled in the art will be able to understand the specific meanings of these terms in the present application depending on the specific circumstances.

[0024] Please refer to Figures 1 and 2. An energy storage power supply 100 according to an embodiment of the present application includes a first case 10, a fixing adhesive, and at least one first battery cell 20. A receiving cavity 11 is provided within the first case 10. A first positioning portion 12 is provided within the receiving cavity 11. A positioning groove 121 is provided within the first positioning portion 12. The at least one first battery cell 20 is received within the positioning groove 121. A fixing adhesive is disposed within the positioning groove 121, and fixedly connects the first battery cell 20 to a side wall of the positioning groove 121.

[0025] In the above-mentioned energy storage power supply 100, a first positioning portion 12 is provided on the inner wall surface of the receiving cavity, and a positioning groove 121 is provided in the first positioning portion 12. At least one first battery cell 20 is received in the positioning groove 121, and the first battery cell 20 is fixed to the first positioning portion 12 with a fixing adhesive, so that the first battery cell 20 can be directly installed in the positioning groove 121. This eliminates the need to assemble a battery module before inserting it into the first case 10. This not only reduces the assembly process and cuts costs, but also reduces the number of parts required to assemble the battery module, thereby improving the space utilization rate of the product and reducing the product size.

[0026] In one embodiment, at least a portion of the first case 10 of the energy storage power supply 100 surrounds and forms an accommodating cavity 11, and a first positioning portion 12 is accommodated in the accommodating cavity 11. The first positioning portion 12 is located at the bottom of the energy storage power supply 100 and fixedly connected to the bottom wall of the accommodating cavity 11. The first positioning portion 12 surrounds and forms a positioning groove 121, which is used to accommodate the first battery cells 20. The number of the first battery cells 20 is not limited here and may be determined according to the battery capacity required by the energy storage power supply 100. After the first battery cells 20 are arranged in an orderly manner in the positioning groove 121, a fixing adhesive can be injected into the positioning groove 121. After the fixing adhesive hardens, the connection between the first battery cells 20 and the first positioning portion 12 is completed. The fixing adhesive can utilize the spacing between the first battery cells 20 to integrally connect the first battery cell 20 and the first positioning portion 12, thereby eliminating the need for other connecting components, reducing the number of components, optimizing the product structure and assembly process, increasing the volumetric energy density and mass energy density of the product, and improving portability while reducing costs. In another embodiment, the first positioning portion 12 may be provided in another part of the energy storage power source 100 and fixedly connected to the ceiling wall or side wall of the accommodating cavity 11. In yet another embodiment, the first battery cell 20 may be partially or completely accommodated within the first positioning portion 12.

[0027] See Figures 2 and 3. In some embodiments, the energy storage power supply 100 includes a reinforcing rib 30. The reinforcing rib 30 connects the sidewall of the first positioning portion 12 and the sidewall of the receiving cavity 11.

[0028] In this way, the structural strength of the first positioning portion 12 and the first case 10 can be improved.

[0029] See FIGS. 2 and 3 for details. In one embodiment, the reinforcing rib 30 may have a plate-like structure, and both sides of the plate-like reinforcing rib 30 are connected to the first positioning portion 12 and the first case 10, respectively, thereby integrating the first positioning portion 12 and the first case 10 and reducing the vibration of the first positioning portion 12. It should be understood that other shapes, perforations, or hollow structures may be used to reduce the weight of the reinforcing rib 30. The reinforcing rib 30 may be made of the same material as the first positioning portion 12 and the first case 10 and connected by welding. The reinforcing rib 30, the first positioning portion 12, and the first case 10 may be made of steel, copper, aluminum, or the like. The reinforcing ribs 30 may be provided on opposite sides of the first positioning portion 12, or may be evenly distributed around the four periphery of the first positioning portion 12 to enhance the fixing effect. Furthermore, if the reinforcing ribs 30 include vertically oriented reinforcing ribs 30, they may also include horizontally oriented reinforcing ribs 30, thereby reducing shape changes of the first case 10 and the first positioning portion 12 due to collisions or temperature changes.

[0030] In some embodiments, the fastening adhesive comprises a construction adhesive.

[0031] In this way, the safety of the first battery cell 20 can be improved.

[0032] Specifically, in one embodiment, the structural adhesive can withstand large loads. Injecting the structural adhesive into the positioning groove 121 can enhance the impact resistance of the first battery cell 20. If the first case 10 of the energy storage power supply 100 is damaged and directly impacts the first battery cell 20, the structural adhesive can withstand part of the impact force and simultaneously transfer the impact force to the entire first battery cell 20, reducing the impact damage. Furthermore, the structural adhesive has good anti-corrosion properties. Even if some of the first battery cells 20 leak electrolyte due to structural damage or if thermal runaway causes electrolyte to leak from the explosion-proof valve (not shown) of the first battery cell 20, the structural adhesive can prevent further leakage of the electrolyte and prevent corrosion of other first battery cells 20 or other structural components. At the same time, the structural adhesive has good thermal conductivity, transferring heat generated by the first battery cell 20 to the first positioning portion 12 and the first case 10, thereby contributing to lowering the operating temperature of the first battery cell 20.

[0033] See Figures 4 and 5. In some embodiments, the at least one first battery cell 20 includes a plurality of sheet-like battery cells 24. The plurality of sheet-like battery cells 24 are arranged in a stack.

[0034] In this way, the energy density of the first battery cell 20 can be improved.

[0035] Specifically, see FIG. 4 . In one embodiment, the sheet-shaped battery cells 24 can be pouch battery cells 21 made of aluminum-plastic or steel-plastic membrane, which can reduce the thickness of the external housing and increase the energy density of each first battery cell 20. At the same time, if a safety risk occurs, the external housing of the pouch battery cell 21 can also release internal stress in the form of expansion or cracking, thereby enhancing the safety of the pouch battery cell 21. The width of the pouch battery cells 21 can match the width of the first positioning portion 12 and can be stacked along the length direction A. Of course, the width of the pouch battery cells 21 can also be approximately half the width of the first positioning portion 12, which allows the pouch battery cells 21 to be placed in two rows within the positioning groove 121 while still leaving a gap for accommodating the fixing adhesive.

[0036] 5, in another embodiment, the sheet-shaped battery cells 24 may be rectangular battery cells 22 whose outer housing is made of aluminum alloy, stainless steel, or the like. The rectangular battery cells 22 have high structural strength and are capable of withstanding mechanical loads. The width of the rectangular battery cells 22 may match the width of the first positioning portions 12, and the rectangular battery cells 22 may be stacked along the length direction A.

[0037] See Figures 4 and 5. In some embodiments, the first battery cell 20 includes two electrodes, and the two electrodes are located on the same side of the first battery cell 20.

[0038] In this way, the structure of the energy storage power supply 100 can be simplified.

[0039] Specifically, see FIGS. 4 and 5. In some embodiments, the electrodes of the first battery cell 20 function as ports for outputting or inputting power. Each first battery cell 20 includes two electrodes, a positive electrode and a negative electrode, which are located on the top, bottom, or other side of the first battery cell 20. When the energy storage power source 100 includes two or more first battery cells 20, the electrodes of each first battery cell 20 are located on the upper, lower, or other side of the first battery cell 20. In this way, the electrodes of all the first battery cells 20 can be connected to only one side of the first positioning portion 12. This more concentrated connection method reduces the required connection space and contributes to a simplified structure of the energy storage power source 100. As shown in FIG. 4, in one embodiment, the first battery cells 20 may be pouch battery cells 21. The two electrodes of each pouch battery cell 21 are both positioned upward. The energy storage power source 100 may include a first bus bar 41. The first bus bar 41 connects the electrodes of the same polarity of two adjacent pouch battery cells 21 at the top of the pouch battery cells 21, allowing the two pouch battery cells 21 to output power in parallel. Power can be output or input between multiple first bus bars 41 in either a series or parallel configuration. The first bus bar 41 may be made of copper, aluminum, nickel, or an alloy material. After the first bus bar 41 is fixed in place with a work jig, the first bus bar 41 and the electrodes of the pouch battery cells 21 can be welded by laser welding. It will also be understood that electrical connection between the first bus bar 41 and the electrodes of the pouch battery cells 21 can be achieved by other connection methods, such as twisting or crimping.

[0040] In addition, the energy storage power supply 100 can also collect status information of each pouch battery cell 21 through the first collecting plate 45. The status information of the pouch battery cells 21 may include information such as the voltage, current, and temperature of each pouch battery cell 21. After the first bus bar 41 is welded, the first collecting plate 45 can be fixed to the corresponding position on the first bus bar 41 using screws. After the first collecting plate 45 is fixed, the nickel strap of the first collecting plate 45 can be connected to the first bus bar 41 using an electrical connection method such as laser welding, thereby achieving an electrical connection between the first collecting plate 45 and the first bus bar 41.

[0041] As shown in FIG. 5 , in another embodiment, the first battery cell 20 may be a rectangular battery cell 22. The two electrodes of the rectangular battery cell 22 are also positioned upward. The energy storage power supply 100 may include a bracket 80. The bracket 80 may include a limiting groove, which is attached to the top of the rectangular battery cell 22 so that the electrodes of the rectangular battery cell 22 pass through the limiting groove. The bracket 80 may be made of plastic, which prevents the two electrodes of the same rectangular battery cell 22 from electrically connecting through the bracket 80 and causing a short circuit. The energy storage power supply 100 may further include a second bus bar 42 and a second collecting plate 46. After the electrodes of the rectangular battery cells 22 are positioned using the bracket 80, the electrodes of two adjacent rectangular battery cells 22 can be connected by a second bus bar 42, and the second collecting plate 46 can be connected to the second bus bar 42. The second bus bar 42 and the first bus bar 41, and the second collecting plate 46 and the first collecting plate 45 have similar features and functions and will not be described again here.

[0042] See Figures 6 to 9. In some embodiments, the at least one first battery cell 20 includes a plurality of cylindrical battery cells 23. A first through-hole 132 is provided in the bottom wall of the positioning groove 121. The bottom electrodes of the cylindrical battery cells 23 are inserted through the first through-hole 132. The energy storage power supply 100 includes a plurality of bus bars 40. The bus bars 40 are used to connect the cylindrical battery cells 23 in series and / or parallel.

[0043] In this way, the safety of the first battery cell 20 can be improved.

[0044] Specifically, see FIGS. 6 to 9. In one embodiment, two electrodes of the cylindrical battery cell 23 are located at opposite ends, and these two electrodes can be distinguished as a first electrode post 231 and a second electrode post 232. The first electrode post 231 and the second electrode post 232 are current interfaces when power is supplied from or charged to the cylindrical battery cell 23. The first electrode post 231 can be located at the bottom end of the cylindrical battery cell 23 as a positive electrode, and the second electrode post 232 can be located at the top end of the cylindrical battery cell 23 as a negative electrode. However, the polarities and positions of the first electrode post 231 and the second electrode post 232 can be reversed. The bus bars 40 are divided into a third bus bar 43 and a fourth bus bar 44. The first electrode post 231 can pass through the first through-hole 132 and be electrically connected to the first electrode post 231 of an adjacent cylindrical battery cell 23 via the third bus bar 43. The second poles 232 may be electrically connected directly to the second poles 232 of the adjacent cylindrical battery cells 23 via the fourth bus bar 44. The third bus bar 43 may electrically connect four or more first poles 231, and similarly, the fourth bus bar 44 may electrically connect four or more second poles 232. In another embodiment, the energy storage power supply 100 may include a third collecting plate 47 and a fourth collecting plate 48. The third collecting plate 47 is connected to the third bus bar 43, and the fourth collecting plate 48 is connected to the fourth bus bar 44, thereby allowing status information of each cylindrical battery cell 23 to be collected through the third collecting plate 47 and the fourth collecting plate 48. The third bus bar 43 and the fourth bus bar 44 have similar features and functions to the first bus bar 41, and the third collecting plate 47 and the fourth collecting plate 48 have similar features and functions to the first collecting plate 45, so they will not be described again here.

[0045] See Figures 6 and 8. In some embodiments, the energy storage power supply 100 further includes a cover plate 50. An accommodating groove 131 is provided on the outer wall surface of the first case 10 corresponding to the first positioning portion 12. A first through hole 132 passes through the bottom wall of the accommodating groove 131. A plurality of bus bars 40 are positioned in the accommodating groove 131. The cover plate 50 is provided on the outer wall surface of the first case 10 to cover the accommodating groove 131.

[0046] This contributes to reducing the volume of the product.

[0047] See FIGS. 6 and 8 for details. In one embodiment, the cylindrical battery cells 23 are vertically accommodated in the positioning grooves 121. The outer wall surface of the bottom of the first case 10 is recessed inward to form the accommodation grooves 131. The first electrode posts 231 of the cylindrical battery cells 23 enter the accommodation grooves 131 through first through-holes 132. The bus bars 40 may include a third bus bar 43. The third bus bar 43 can connect the first electrode posts 231 within the accommodation grooves 131, thereby integrating the first electrode posts 231 and the third bus bar 43 into the bottom of the first case 10, improving overall integration and reducing product volume. A cover plate 50 is provided to cover the accommodation grooves 131 to further enhance the integrity of the first case 10 and protect the first electrode posts 231 and the third bus bar 43. The cover plate 50 is fixed to the first case 10 with bolts, but other methods are also possible and are not limited thereto. In another embodiment, the energy storage power supply 100 may include a third collecting plate 47 , which is connectable to the third bus bar 43 within the receiving groove 131 .

[0048] See Figure 6. In some embodiments, the energy storage power supply 100 further comprises a thermally conductive adhesive 50. The thermally conductive adhesive 50 connects the cover plate 50 and the bus bar 40.

[0049] In this way, the temperature of the bus bar 40 can be reduced.

[0050] Specifically, see FIG. 6 . In one embodiment, the multiple bus bars 40 may include a third bus bar 43. When current passes through the third bus bar 43, a certain amount of current loss occurs, generating heat. This accumulated heat increases the temperature of the third bus bar 43 and the cylindrical battery cells 23, posing safety risks such as fire. Therefore, by filling a thermally conductive adhesive between the third bus bar 43 and the cover plate 50, heat from the third bus bar 43 is transferred to the cover plate 50, and the heat is dissipated from the cover plate 50 to the surrounding environment, thereby cooling the third bus bar 43 and the cylindrical battery cells 23. The cover plate 50 may be made of aluminum, which has relatively good heat transfer properties. In addition, the first case 10 may also be made of a material with good heat transfer properties, such as aluminum, which further transfers heat from the cover plate 50 to the first case 10, thereby improving the cooling effect on the third bus bar 43 and the cylindrical battery cells 23.

[0051] See Figure 6. In some embodiments, the energy storage power supply 100 further includes a sealing ring 60. The sealing ring 60 seals the cover plate 50 and the outer wall surface of the first case 10.

[0052] In this way, the sealing effect of the receiving groove 131 can be improved.

[0053] For details, see FIG. 6 . In one embodiment, an accommodating groove 131 is formed in the outer wall of the first case 10. The bus bar assembly 40 is accommodated in the accommodating groove 131. In a humid environment, if the sealing effect of the accommodating groove 131 is poor, water vapor may enter the accommodating groove 131, causing the bus bar 40 to rust or, in the worst case, causing a short circuit. Therefore, when the cover plate 50 covers the accommodating groove 131, a sealing ring 60 may be provided between the cover plate 50 and the outer wall of the first case 10 to further enhance the sealing effect of the accommodating groove 131 and isolate the bus bar 40 in the accommodating groove 131 from external water vapor.

[0054] See Figures 1, 2, 8, 9, and 10. In some embodiments, a first case 10 includes a first housing 13 and a second housing 14. The first housing 13 is removably connected to the second housing 14 to surround and form a receiving cavity 11. A first positioning portion 12 is provided on the first housing 13 or the second housing 14.

[0055] In this way, installation and repair are made easier.

[0056] Specifically, FIGS. 2, 8, and 9 show the structure of the first housing 13 in an embodiment in which the first battery cell 20 is a cylindrical battery cell 23. FIG. 10 shows the structure of the first housing 13 in an embodiment in which the first battery cell 20 is a pouch battery cell 21 or a rectangular battery cell 22. Please refer to FIGS. 1, 2, 8, 9, and 10. In one embodiment, the first case 10 may include a first housing 13 located at an upper portion and a second housing 14 located at a lower portion. In some embodiments, the first housing 13 and the second housing 14 may be located at the front and rear portions, left and right portions, or diagonal corners of the first case 10, respectively. The first housing 13 and the second housing 14 are detachably connected to each other by a method such as a screw thread, a fastener, or a clamp. The first housing 13 and the second housing 14 surround and form an accommodating cavity 11 to accommodate the first battery cell 20. This improves ease of assembly and disassembly.

[0057] Also, see the drawings. In some embodiments, the energy storage power supply 100 may further include a panel 70 mounted on the first case 10. The panel 70 can display information such as the current charge level and battery temperature of the energy storage power supply 100. The panel 70 also includes a port for connecting the energy storage power supply 100 to an electrical device or a charging device, thereby allowing the first battery cell 20 to supply power to the electrical device or receive power from the charging device.

[0058] In related art, two battery brackets are typically used to secure both ends of the battery cells, the corresponding electrical connection components, and the collection plate, and then the battery pack is formed and then attached to the external housing. This results in a large number of components in the energy storage power supply, a large volume, high costs, and a complicated installation procedure. Meanwhile, space must be reserved in the external housing for installing the battery pack, which further increases the volume of the energy storage power supply.

[0059] Please refer to Figures 11 to 13. In an embodiment of the present application, an energy storage power supply 100 is provided. The energy storage power supply 100 includes a second case 101 having a second positioning portion 111 on an inner wall of the second case 101, at least one second battery cell 103 having a first end 1301 inserted into the second positioning portion 111 and two electrodes 133 provided on a second end 1302 of the at least one second battery cell 103 opposite to the first end 1301, a fastener 15 for fastening the second end 1302 of the at least one second battery cell 103, and an electrical connection part 17 electrically connected to the second end 1302 of the at least one second battery cell 103.

[0060] In the above-described energy storage power supply 100, a second positioning portion 111 is provided on the inner wall of the second case 101, and the first end 1301 of the second battery cell 103 can be directly inserted into the second positioning portion 111, without the need to fix it with a bracket and then assemble it to the second case 101. This reduces the number of parts, simplifies the installation procedure, and does not require reserved installation space in the second case 101, thereby reducing the cost and volume of the energy storage power supply 100. In addition, the second end 1302 of the second battery cell 103 can be fixed by a fastener 15 and connected to an electrical connection part 17, thereby achieving overall fixation and electrical connection of the second battery cell 103 within the second case 101.

[0061] Specifically, in one embodiment, as shown in Figures 11 and 12, at least a portion of the second case 101 of the energy storage power supply 100 is enclosed to form an accommodating cavity 112, and a second positioning portion 111 is provided within the accommodating cavity 112, which is used to guide and fix one end of at least one second battery cell 103. Compared to a method in which two brackets are used to fix both ends of the second battery cell 103, this method reduces the use of brackets, omits assembly steps, and reduces production costs.

[0062] In one embodiment, as shown in FIG. 11 , the second battery cell 103 includes a first end 1301 and a second end 1302 facing in opposite directions, and the first end 1301 and the second end 1302 of the second battery cell 103 are fixed respectively within the energy storage power supply 100 to ensure the stability of the second battery cell 103.

[0063] It will be understood that the first end 1301 and the second end 1302 of the second battery cell 103 may be the bottom end and the top end, the left end and the right end, the front end and the rear end, or other opposite ends of the second battery cell 103, respectively. This depends on factors such as the shape and arrangement direction of the second battery cell 103. By fixing the first end 1301 and the second end 1302 with the second positioning portion 111 and the fastener 15, respectively, the second battery cell 103 can be safely installed in the energy storage power supply 100 and the normal operation of the energy storage power supply 100 can be ensured, and no specific limitations are set here.

[0064] In one embodiment, a second positioning portion 111 is provided on the inner wall of the second case 101, which is equivalent to one of the brackets being integrated into the second case 101; that is, the second positioning portion 111 and the second case 101 form an integrated structure that cannot be removed. As a result, one end of the second battery cell 103 is directly attached to the second case 101, achieving a "cell-to-pack" (CTP) structure, which can also be called a moduleless technology, which omits or reduces the number of assembly modules (including parts such as brackets and bolts) and does not require reserved installation space, thereby reducing costs and making the product more compact.

[0065] In one embodiment, the second positioning portion 111 may be provided at a different position on the inner wall of the second case 101, for example, on the inner wall, inner bottom wall, or other position of the second case 101. This allows the first end 1301 of the at least one second battery cell 103 to be fixed to the second positioning portion 111, thereby ensuring that one end of the at least one second battery cell 103 is stably provided within the energy storage power supply 100. No specific limitations are provided here.

[0066] For example, in one example, the second positioning portion 111 may be a positioning groove that matches the shape and size of the first end 1301. For example, as shown in FIG. 11 , if the second positioning portion 111 is a cylindrical slot, the first end 1301 of at least one second battery cell 103 will each form an interference fit with a corresponding number of positioning grooves, thereby improving the stability of the connection between the second battery cell 103 and the second positioning portion 111.

[0067] In one embodiment, as shown in FIG. 11 , the energy storage power supply 100 includes a fastener 15, which is removably connected within the energy storage power supply 100 and is positioned opposite the second positioning portion 111, and can be used to fasten the second end 1302, ensuring that the second end 1302 is stably positioned within the energy storage power supply 100, improving the overall stability of the at least one second battery cell 103, and ensuring the safe operation of the energy storage power supply 100.

[0068] In one embodiment, as shown in FIG. 11, the electrical connection part 17 is a bus bar, and when there are multiple second battery cells 103, it is used to connect the multiple second battery cells 103 in series and / or parallel.

[0069] 11, there are a plurality of electrical connection components 17, each having a plurality of locating holes (not shown). The fixture 15 has a plurality of locating posts (not shown) corresponding to the plurality of locating holes, so that the locating holes and the locating posts are connected to each other. For example, the locating holes and the locating posts may form an interference fit, be fixed with screws, or be connected in other ways, so that the electrical connection components 17 are fixedly attached to the fixture 15 and the connection stability is ensured.

[0070] In one embodiment, the fixture 15 has a plurality of second through-holes 1511 formed therein, ensuring that the second end 1302 of at least one second battery cell 103 is exposed through the plurality of second through-holes 1511. This allows the electrical connection part 17 to be electrically connected to the at least one second battery cell 103, ensuring that the energy storage power supply 100 can discharge / output power to the outside or charge / input power to the inside.

[0071] 11 and 12, it will be understood that the electrical connection part 17 forms an electrical connection with the at least one second battery cell 103 by welding, thereby connecting the at least one second battery cell 103 in series and / or parallel, so that the energy storage power supply 100 can provide an appropriate power supply voltage to meet the usage needs of the user.

[0072] For example, in one embodiment, the electrical connection parts 17 connect the positive poles of at least one second battery cell 103 to form a general positive connection port, and connect the negative poles of at least one second battery cell 103 to form a general negative connection port, that is, the electrical connection parts 17 connect at least one second battery cell 103 in parallel, so that the at least one second battery cell 103 forms a stable output power supply, ensuring the normal operation and good durability of the energy storage power supply 100.

[0073] In another example, the electrical connection part 17 alternately connects each positive pole and each negative pole of the at least one second battery cell 103, so that the positive pole and negative pole connected to the two ends of the electrical connection part 17 become a positive electrode connection port and a negative electrode connection port, respectively. That is, the electrical connection part 17 connects at least one second battery cell 103 in series, so that the at least one second battery cell 103 forms a high-voltage output power source to meet the power consumption needs of the user.

[0074] 11 and 12, in one embodiment, the energy storage power supply 100 further includes a collecting plate 19, which is provided with nickel straps arranged in a row along the left-right direction, and the nickel straps are connected and fixed to the electrical connection parts 17 by welding. For example, the welding method may be laser welding, etc., which ensures that the energy storage power supply 100 can timely collect and obtain status information of each second battery cell 103. The status information of the second battery cell 103 may include information such as temperature, current, or voltage, which ensures the safe operation of the energy storage power supply 100.

[0075] That is, after the electrical connection parts 17 and each second battery cell 103 are welded, the collecting plate 19 can be fixed to the corresponding position on the electrical connection parts 17 using screws. After the collecting plate 19 is fixed, the nickel strap of the collecting plate 19 can be connected to the electrical connection parts 17 using an electrical connection method such as laser welding, thereby achieving an electrical connection between the collecting plate 19 and the electrical connection parts 17.

[0076] Alternatively, the first end 1301 may be a non-polar end, the second end 1302 may be a polar end, and there may be at least two poles of different electrical polarities, so that in the energy storage power supply 100, the electrical connection part 17 and the collecting plate 19 are provided only at the second end 1302 of the second battery cell 103, and the electrical connection part 17 and the collecting plate 19 are electrically connected to the positive and negative poles located at the second end 1302 of the second battery cell 103, respectively. This ensures normal charging and discharging of the second battery cell 103, and reduces the number and space required for the electrical connection parts 17 and the collecting plate 19, thereby contributing to the miniaturization of the energy storage power supply 100.

[0077] See Figures 14 to 21. In some embodiments, the second positioning portion 111 is located on the inner bottom wall 113 or the inner side wall 115 of the second case 101.

[0078] In this way, it is ensured that the second battery cell 103 is stably installed on the inner bottom wall 113 or the inner wall 115 of the second case 101, and the installation needs of different products are met.

[0079] 14 to 17, in one embodiment, the second positioning portion 111 is located on the inner bottom wall 113 of the second case 101; that is, the second positioning portion 111 does not contact the side edge of the second case 101. This allows an installation space for the second battery cell 103 to be formed inward, perpendicular to the paper surface. As a result, the inner bottom wall 113 of the second case 101 and a shielding plate (not shown) that forms the second positioning portion 111 are arranged to surround the second battery cell 103, forming a stable support structure and ensuring that the first end 1301 of the second battery cell 103 is stably installed in the second positioning portion 111.

[0080] It will be understood that the inner bottom wall 113 of the second case 101 can function as a support base, supporting the second battery cell 103 installed in the second positioning portion 111, thereby improving the stability of the installation of the second battery cell 103 and ensuring the safe operation of the second battery cell 103.

[0081] In one example, as shown in FIG. 15, the second battery cell 103 may be in the form of a sheet or block, and may be used to attach the second positioning portion 111 installed in a rectangular slot to ensure the stability of the second battery cell 103.

[0082] In another example, as shown in Figures 14, 16, and 17, the second battery cell 103 may be cylindrical and may be used to attach a second positioning portion 111 installed in a cylindrical slot to ensure the stability of the second battery cell 103.

[0083] In other examples, the second battery cell 103 may have other shapes to match with the correspondingly shaped second positioning portion 111, thereby ensuring stable installation of the second battery cell 103. No specific limitations are set here.

[0084] 18 to 21 , in one embodiment, the second positioning portion 111 is located on the inner wall 115 of the second case 101, i.e., the second positioning portion 111 is in direct contact with the side edge of the second case 101. This allows for an installation space for the second battery cell 103 to be formed inward, perpendicular to the plane of the page. As a result, the inner wall 115 of the second case 101, the inner bottom wall 113, and a shielding plate (not shown) that forms the second positioning portion 111 are arranged in a surrounding manner, forming a stable support structure and ensuring that the first end 1301 of the second battery cell 103 is stably installed in the second positioning portion 111.

[0085] It will be understood that the inner wall 115 of the second case 101 can be considered as part of the shielding plate and can be used to position and fix the second battery cell 103. This allows the second battery cell 103 to be stably installed in the second positioning portion 111, and at the same time, the inner bottom wall 113 of the second case 101 can function as a support base to support the second battery cell 103 installed in the second positioning portion 111, thereby improving the installation stability of the second battery cell 103 and ensuring the safe operation of the second battery cell 103.

[0086] In one example, as shown in Figures 18 and 19, the second battery cell 103 may be in the form of a sheet or block, and may be used to attach the second positioning portion 111 installed in a rectangular slot to ensure the stability of the second battery cell 103.

[0087] In another example, as shown in FIG. 20 , the second battery cell 103 may be cylindrical and may be used to attach a second positioning portion 111 installed in a cylindrical slot to ensure the stability of the second battery cell 103.

[0088] In yet another example, as shown in FIG. 21 , the second battery cell 103 may be hollow cylindrical and may be used to attach a ring-shaped second positioning portion 111 to ensure the stability of the second battery cell 103.

[0089] In another example, the second battery cell 103 may have another shape to match the correspondingly shaped second positioning portion 111, thereby ensuring stable installation of the second battery cell 103. No specific limitations are set here.

[0090] In summary, the second positioning portion 111 is located on the inner bottom wall 113 or inner wall 115 of the second case 101, which saves the use of brackets and installation space, thereby increasing the number of second battery cells 103 installed and the energy density, and improving practicality.

[0091] See Figure 14. In some embodiments, a plurality of retaining posts 1131 arranged in an array are formed on the inner bottom wall 113 of the second case 101, and the second positioning portions 111 are positioning grooves formed between adjacent retaining posts 1131 in two rows and two columns.

[0092] In this way, the first end 1301 of the cylindrical second battery cell 103 is guided and fixed, and the safety is improved.

[0093] Specifically, in one embodiment, a plurality of retaining posts 1131 are arranged in a plurality of rows and a plurality of columns, and a positioning groove is defined between adjacent two rows and two columns of retaining posts 1131, and a plurality of second battery cells 103 are installed at intervals from each other, thereby improving safety.

[0094] It will be understood that the spaced apart positioning grooves formed by the multiple retaining posts 1131 allow the multiple second battery cells 103 to be spaced apart, reducing problems such as thermal expansion due to direct contact between the multiple second battery cells 103 and situations in which the multiple second battery cells 103 are pressed against each other and deformed when the energy storage power source 100 is hit, thereby reducing safety risks.

[0095] In one implementation, as shown in FIG. 14 , cylindrical slots can be defined between adjacent two rows and two columns of retaining posts 1131, thereby ensuring stable installation of the cylindrical second battery cells 103 and improving the stability of the cylindrical second battery cells 103.

[0096] In detail, the outer wall of each retaining post 1131 is formed as an arc-shaped surface and is arranged around it to form a cylindrical slot. The cylindrical slot matches the outer wall of the second battery cell 103, ensuring the connection effect between the second battery cell 103 and the second positioning part 111 and reducing shaking.

[0097] In other embodiments, the positioning groove may have other shapes, such as a rectangle, as long as it ensures stable installation of the second battery cell 103 of different shapes, and no specific limitations are set here.

[0098] 11 and 14, in one embodiment, the height of the retaining post 1131 is preferably equal to or less than the height of the second case 101 in FIG. 11, thereby ensuring that the height of the second positioning part 111 is also equal to or less than the height of the second case 101 in FIG. 11, thereby ensuring that the second battery cell 103 is stably installed in the second positioning part 111. Of course, the height of the retaining post 1131 may be greater than the height of the second case 101 in FIG. 11, in which case the height of the second positioning part 111 may be greater than the height of the second case 101 in FIG. 11, and other connecting components may be used to stably fix the electronic components (e.g., inverter, etc.) at the second end 1302 of the second battery cell 103 within the energy storage power supply 100, but no specific limitations are set herein.

[0099] Here, the second case 101 in Figure 11 may be a single-sided second case 101, for example, a lower case incorporating the second positioning portion 111, a left-side case incorporating the second positioning portion 111, or a single-sided second case 101 in other directions, but no specific limitations are set here.

[0100] See Fig. 16. In some embodiments, a plurality of restricting bars 1132 are formed on the inner bottom wall 113 of the second case 101, and the plurality of restricting bars 1132 include S-shaped side surfaces 1133, and the second positioning portion 111 is a positioning groove formed between two adjacent S-shaped side surfaces.

[0101] In this way, the first end 1301 of the cylindrical second battery cell 103 is inserted into the positioning groove, and the side of the second battery cell 103 is closely fitted to the S-shaped side 1133, thereby improving the stability of the second battery cell 103.

[0102] Specifically, in one embodiment, a plurality of limiting bars 1132 are arranged in a plurality of rows on the inner bottom wall 113 of the second case 101, and each limiting bar 1132 has two opposite S-shaped sides 1133, forming a plurality of positioning grooves spaced apart in the row direction and a plurality of positioning grooves staggered in the column direction, thereby ensuring that the second battery cells 103 are respectively installed in the second positioning portions 111 at intervals, improving safety.

[0103] It will be understood that the spaced grooves using the S-shaped side surfaces 1133 allow the multiple second battery cells 103 to be spaced apart, reducing problems such as thermal expansion due to direct contact between the multiple second battery cells 103 and situations in which the multiple second battery cells 103 are pressed against each other and deformed when the energy storage power source 100 is hit, thereby reducing safety risks.

[0104] In one embodiment, as shown in FIG. 16 , the limiting bars 1132 may be arranged in three rows along the left-right direction, and a plurality of cylindrical slots may be defined between the two S-shaped sides 1133 of each limiting bar 1132, thereby ensuring that the plurality of cylindrical second battery cells 103 are stably installed and safely spaced apart, thereby improving the stability of the cylindrical second battery cells 103.

[0105] In other embodiments, the limiting bars 1132 may be of other quantities, and the positioning grooves may be of other shapes, such as rectangular, to ensure that second battery cells 103 of different shapes are stably installed. No specific limitations are set here.

[0106] 18 to 21. In some embodiments, an integrated bracket 1151 is formed on the inner wall 115 of the second case 101, and the second positioning portion 111 is a positioning groove formed on the integrated bracket 1151.

[0107] In this way, the bracket of the battery cell is saved, and the first end 1301 of the second battery cell 103 is stably fixed by the inner wall 115 of the second case 101, thereby reducing costs.

[0108] Specifically, in one embodiment, as shown in Figures 18 to 21, an integrated bracket 1151 is formed on the inner wall 115 of the second case 101, and the inner wall 115 and the integrated bracket 1151 form a second positioning portion 111, thereby positioning the first end 1301 of the second battery cell 103 at the second positioning portion 111 and supporting it by the inner bottom wall 113, thereby ensuring the stability of the second battery cell 103.

[0109] In one embodiment, the second case 101 and the integrated bracket 1151 can be integrally molded using an injection molding method, which saves external bracket and mounting space and improves the structural strength of the second case 101 and the integrated bracket 1151, thereby ensuring the safe installation of the second battery cell 103.

[0110] In other embodiments, the second case 101 and the integrated bracket 1151 may be molded in other ways to ensure the safe installation of the second battery cell 103, and no specific limitations are set here.

[0111] In one embodiment, as shown in FIG. 18 , the integrated bracket 1151 may be formed on two opposing inner walls 115 of the second case 101, thereby forming a plurality of rectangular positioning grooves that can be used to install the sheet-shaped or block-shaped second battery cells 103, thereby ensuring the stability and safety of the second battery cells 103.

[0112] 19, the integrated bracket 1151 may be formed on a single inner wall 115 in the second case 101 (as shown in FIG. 19), or on two or three adjacent inner walls 115 in the second case 101 (not shown), and the integrated bracket 1151 has a square frame shape and forms a plurality of rectangular positioning grooves that can be used to install sheet-shaped or block-shaped second battery cells 103, ensuring the stability and safety of the second battery cells 103. No specific limitations are set here.

[0113] 20, the integrated bracket 1151 may be formed on a single inner wall 115 in the second case 101 (as shown in FIG. 20), or on two or three adjacent inner walls 115 in the second case 101 (not shown), and the integrated bracket 1151 has a plurality of cylindrical positioning grooves defined therein that can be used to install the cylindrical second battery cells 103, ensuring the stability and safety of the second battery cells 103. No specific limitations are set here.

[0114] 21 , the integrated bracket 1151 may be formed on a single inner wall 115 in the second case 101 (as shown in FIG. 21 ), or on two or three adjacent inner walls 115 in the second case 101 (not shown), and the integrated bracket 1151 may be a cylinder and an outer frame arranged in an array, with a plurality of ring-shaped positioning grooves defined therein that can be used to install the hollow cylindrical second battery cells 103, ensuring the stability and safety of the second battery cells 103. No specific limitations are set here.

[0115] In summary, the second case 101 and the integrated bracket 1151 have an integrated structure, which saves external brackets and mounting space, thereby ensuring stable installation of the second battery cell 103 and reducing costs.

[0116] See Figures 14 to 21. In some embodiments, the positioning grooves are circular or rectangular.

[0117] In this way, it is ensured that the cylindrical second battery cell 103 and the rectangular second battery cell 103 can be stably installed in the positioning grooves that match their respective shapes, thereby improving the adaptability and safety of the second battery cells 103 with different shapes.

[0118] Specifically, in one embodiment, as shown in Figures 14, 16, 17, 20, and 21, the positioning groove is circular and can be used to install a cylindrical second battery cell 103, and the cylindrical second battery cell 103 matches and connects with the circular positioning groove, thereby improving the safety of the cylindrical second battery cell 103.

[0119] In another embodiment, as shown in Figures 15, 18, and 19, the positioning groove is rectangular and can be used to install a sheet-shaped or block-shaped second battery cell 103, and the sheet-shaped or block-shaped second battery cell 103 matches and connects with the rectangular positioning groove, thereby improving the safety of the sheet-shaped or block-shaped second battery cell 103.

[0120] It will be appreciated that in one example, the second battery cell 103 forms an interference fit with the positioning groove to ensure stable installation of the second battery cell 103, and thereby ensure safe operation of the second battery cell 103.

[0121] In another example, when the second battery cell 103 is installed in the positioning groove, adhesive is injected to ensure that the second battery cell 103 is stably connected to the positioning groove, thereby ensuring the safe operation of the second battery cell 103.

[0122] Here, the adhesive may be a thermally conductive adhesive, which can strengthen the connection effect of the second battery cell 103 while also allowing the heat generated by the second battery cell 103 to be dissipated through the second case 101, effectively cooling the second battery cell and improving safety.

[0123] In summary, the circular or rectangular positioning grooves can ensure stable installation of cylindrical second battery cells 103 and rectangular second battery cells 103, improving the adaptability of installation of second battery cells 103 with different shapes and improving practicality.

[0124] In some embodiments, the second battery cell 103 includes one of a cylindrical battery cell and a sheet-like battery cell.

[0125] In this way, different shapes of the second battery cells 103 can be provided to meet the actual needs of users.

[0126] Specifically, in one embodiment, the second battery cell 103 includes one of a cylindrical battery cell and a sheet-shaped battery cell, i.e., the energy storage power supply 100 can operate using either a cylindrical battery cell or a sheet-shaped battery cell, and can meet the user's power usage needs, and no specific limitations are set here.

[0127] In one embodiment, the second battery cell 103 may be a cylindrical battery cell, which may be matched and installed in the second case 101 having a plurality of cylindrical second positioning portions 111, as shown in FIG. 11 , to ensure the charging and discharging process of the energy storage power supply 100.

[0128] In another embodiment, the second battery cell 103 may be a sheet-shaped battery cell (not shown), which may be matched and installed in the second case 101 provided with a plurality of rectangular second positioning portions 111 to ensure the charging and discharging process of the energy storage power source 100. Here, the sheet-shaped battery cell may be formed by stacking a plurality of second battery cells 103 side by side.

[0129] For example, the sheet-shaped battery cells can be pouch battery cells 21 made of aluminum-plastic or steel-plastic membranes, which have the advantages of small volume and high energy density per single second battery cell 103. At the same time, if a safety risk occurs, the external housing of the pouch battery cells 21 can also release internal stress in the form of expansion or cracking, enhancing the safety of the pouch battery cells 21. As shown in Figures 15, 18, and 19, the width of the pouch battery cells 21 can match the width (e.g., left-right direction) of the second positioning portion 111 and can be stacked along the length (e.g., front-back direction). Of course, the width of the pouch battery cells 21 can also be approximately half the width of the second positioning portion 111, allowing the pouch battery cells 21 to be placed in two rows within the second positioning portion 111 while still leaving a gap for adhesive to ensure stable fixation of the pouch battery cells.

[0130] See Figure 22. In some embodiments, the second battery cell 103 includes two electrodes 133 located at a second end 1302 of the second battery cell 103.

[0131] In this way, the structure of the energy storage power supply 100 is simplified, the welding space is reduced, and this contributes to miniaturization.

[0132] Specifically, in one embodiment, as shown in Figures 11 and 22, the second battery cell 103 includes a first end 1301 and a second end 1302, which are arranged facing opposite directions and are stably connected through the second positioning portion 111 and the fixing part 15, respectively, to ensure the safe operation of the second battery cell 103.

[0133] In one embodiment, the second battery cell 103 includes two electrodes 133 located at the second end 1302 of the second battery cell 103, i.e., the first end 1301 may be an end without electrodes 133 that can be connected in cooperation with the second positioning portion 111, while the second end 1302 may be an end with two electrodes 133 that can be connected in cooperation with the fixing part 15, the electrical connection part 17, the collecting plate 19, etc., thereby ensuring the input and output of power.

[0134] 11 and 22, the two electrodes 133 may include a third pole 1331 and a fourth pole 1332, where the third pole 1331 may be a positive pole and the fourth pole 1332 may be a negative pole, thereby forming a positive and negative interface for the second battery cell 103 and ensuring the charging or discharging of the second battery cell 103. Of course, the third pole 1331 may be a negative pole and the fourth pole 1332 may be a positive pole, but this is not specifically limited.

[0135] That is, in one embodiment, one of the two electrodes 133 is a positive electrode and the other is a negative electrode.

[0136] In this way, the charging function or discharging function can be realized on the same side of the second battery cell 103, which reduces the steps of wiring and welding and contributes to improving the miniaturization of the energy storage power supply 100.

[0137] It will be understood that the two electrodes 133 are located at the second end 1302 of the second battery cell 103, i.e., the two electrodes 133 are located on the same side of the second battery cell 103, which reduces the number of electrical connection parts 17 and collecting plates 19, etc., located at the first end 1301, reduces the number of welding steps, saves installation space, reduces costs, and contributes to the compact design and good practicability of the energy storage power supply 100.

[0138] In other embodiments, the first end 1301 may be an end provided with two electrodes 133, and the second end 1302 may be an end without any electrodes 133, thereby ensuring the normal operation of the energy storage power supply 100. No specific limitations are set here.

[0139] In some embodiments, the two electrodes 133 may be protrusions of different shapes or sizes.

[0140] In this way, it is easier to distinguish the positive and negative poles of the second battery cell 103 based on the shape or size of the protrusion, which improves the accuracy of the installation and connection of the second battery cell 103 and ensures the safe use of the energy storage power supply 100.

[0141] Specifically, in one embodiment, the two electrodes 133 are protruding posts of different shapes or sizes, which makes it easier to distinguish the two electrodes 133 and meets the user's power supply needs of connecting the second battery cells 103 in series or parallel to ensure correct wiring of the second battery cells 103.

[0142] It will be understood that the convex poles may be third poles 1331 and fourth poles 1332 with different shapes and electrical properties as shown in FIG. 22, where the convex poles may be circular and elliptical to make it easier to distinguish the tangents and ensure safe use.

[0143] That is, the circular protruding pillar may be the positive electrode and the elliptical protruding pillar may be the negative electrode, or the circular protruding pillar may be the negative electrode and the elliptical protruding pillar may be the negative electrode. Of course, the protruding pillars may have other shapes, and no specific limitations are set here.

[0144] In some embodiments, a protruding post is provided at the second end 1302 of the second battery cell 103, and the protruding post constitutes one of the two electrodes 133, and another part of the second end 1302 of the second battery cell 103 constitutes the other of the two electrodes 133.

[0145] In this way, the second battery cell 103 realizes charging input and discharging output at the second end 1302 , and ensures the normal operation of the energy storage power supply 100 .

[0146] Specifically, in one embodiment, a protruding post is provided at the second end 1302 of the second battery cell 103, so that the protruding post can serve as one electrode 133, i.e., one terminal of the second battery cell 103.

[0147] In one embodiment, another portion of the second end 1302 of the second battery cell 103 constitutes the other of the two electrodes 133. That is, other portions of the second end 1302 may be formed with another electrode 133, excluding the area occupied by the protruding post. For example, another protruding post may be provided on another portion of the second end 1302, or another terminal of the second battery cell 103 may be formed in another manner. This ensures that the second end 1302 of the second battery cell 103 can achieve the functions of charge input and discharge output, while also reducing the welding space required to mount the second battery cell 103 on both ends, improving practicality.

[0148] See Figure 11. In some embodiments, the fixture 15 includes a split bracket 151, which has a plurality of second positioning portions (not shown) formed thereon, which are used to fix the second end 1302, and which have second through holes 1511 through which the protruding posts protrude.

[0149] In this way, the second end 1302 of the second battery cell 103 is stably installed, and the overall stability of the second battery cell 103 is ensured.

[0150] Specifically, in one embodiment, as shown in FIG. 11 , the split bracket 151 may be a detachable bracket, which is provided at the second end 1302 of the second battery cell 103 and can be fixed to the second case 101 by a screw 152, thereby ensuring that the second battery cell 103 is stably installed within the energy storage power supply 100.

[0151] As shown in FIG. 11 , it will be understood that screws 152 may be provided on the split bracket 151 and corresponding threaded screw holes may be provided in the second case 101, so that the split bracket 151 can be detachably connected to the second case 101, thereby ensuring the assembly, maintenance and replacement of the second battery cell 103.

[0152] In one embodiment, the split bracket 151 is formed with a plurality of second positioning portions (not shown), which may be blind holes that match the shape and size of the second end 1302 of the second battery cell 103, and are used to form an interference fit to secure the second end 1302 of the second battery cell 103 onto the split bracket 151.

[0153] In one embodiment, the split bracket 151 has a plurality of second through-holes 1511 formed therein, the diameter of the second through-holes 1511 being smaller than the diameter of the second end 1302 of the second battery cell 103 and concentrically arranged with the second positioning portion (not shown). This allows the second end 1302 of the second battery cell 103 to abut against the second positioning portion, i.e., the split bracket 151 around the second through-holes 1511, thereby securing the second end 1302 of the second battery cell 103. In addition, the first end 1301 of the second battery cell 103 is secured by the second positioning portion 111, ensuring that the entire second battery cell 103 is stably secured within the energy storage power supply 100.

[0154] In addition, two electrodes 133 are located at the second end 1302 of the second battery cell 103, so that the two electrodes 133 are arranged to protrude from the second through-hole 1511 and welded to the electrical connection part 17, thereby electrically connecting the second battery cell 103 to the electrical connection part 17 and ensuring the normal charging and discharging process of the second battery cell 103.

[0155] In one embodiment, the second through-hole 1511 may be a cylindrical hole or a hole of another shape, which ensures that the second end 1302 of the second battery cell 103 abuts on the split bracket 151 and is fixed at the position of the second through-hole 1511. No specific limitations are provided here.

[0156] In some embodiments, fastener 15 comprises a fastening adhesive.

[0157] In this way, the second battery cell 103 is stably installed in the energy storage power supply 100, and the safe operation of the second battery cell 103 is ensured.

[0158] Specifically, the fixing part 15 includes a fixing adhesive, i.e., when the first end 1301 of the second battery cell 103 is fixed to the second position portion 111, the fixing adhesive ensures that the entire second battery cell 103 is stably connected within the energy storage power source 100, and ensures the safe operation of the second battery cell 103.

[0159] It will be appreciated that in one embodiment, when the first end 1301 of at least one second battery cell 103 is inserted into and connected to the second positioning portion 111, since the second battery cells 103 are arranged in an array by the second positioning portion 111, it is only necessary to inject a fixing adhesive into the receiving cavity 112 of the second case 101 and guide it into the gaps between the plurality of second battery cells 103. This ensures that the second ends 1302 of the plurality of second battery cells 103 are also stably connected within the energy storage power supply 100, and that the second battery cells 103 as a whole are stably installed and operate safely.

[0160] In one embodiment, the fastening adhesive may be a construction adhesive.

[0161] On the one hand, the structural adhesive can withstand large loads. Injecting the structural adhesive into the gaps between the second battery cells 103 can enhance the impact resistance of the second battery cells 103. If the second case 101 of the energy storage power source 100 is damaged and an impact is directly applied to the second battery cells 103, the structural adhesive can withstand part of the impact force and simultaneously transmit the impact force to the entire second battery cell 103, thereby reducing the impact damage.

[0162] On the other hand, the structural adhesive has good anti-corrosion properties, so that even if some of the second battery cells 103 leak electrolyte due to structural damage or if thermal runaway causes electrolyte to spray out of the explosion-proof valve (not shown) of the second battery cells 103, the structural adhesive can prevent further leakage of the electrolyte and avoid corrosion of other second battery cells 103 or other structural components.

[0163] In addition, the structural adhesive has good thermal conductivity, and transfers the heat generated from the second battery cell 103 to the second positioning portion 111 and the second case 101, thereby contributing to reducing the operating temperature of the second battery cell 103 and ensuring the safe operation of the second battery cell 103.

[0164] See Figure 23. In some embodiments, the second case 101 includes a third housing 117 and a fourth housing 119, the third housing 117 is removably connected to the fourth housing 119, and the second positioning portion 111 is provided on the third housing 117 or the fourth housing 119.

[0165] This makes assembly and maintenance easy, and is practical and convenient.

[0166] Specifically, in one embodiment, as shown in FIG. 23 , the second case 101 includes a third housing 117 and a fourth housing 119, where the third housing 117 may be the lower case and the fourth housing 119 may be the upper case, and the third housing 117 and the fourth housing 119 are arranged opposite each other and may be matched and connected by means of threads, fasteners, clamps, or the like, to provide a relatively stable sealed environment, thereby ensuring the safe and stable operation of the second battery cell 103 within the energy storage power source 100.

[0167] In some embodiments, the third housing 117 and the fourth housing 119 may be located in the front and rear or left and right portions of the second case 101, respectively, or the third housing 117 and the fourth housing 119 may be arranged at two diagonal corners of the second case 101.

[0168] The third housing 117 and the fourth housing 119 are removably connected to each other by means of threads, fasteners, clamps, or the like. The third housing 117 and the fourth housing 119 surround and form the receiving cavity 11, and receive the second battery cell 103. It will be understood that this can improve the ease of assembly and disassembly.

[0169] In one embodiment, the second positioning portion 111 is provided on the third housing 117 or the fourth housing 119. It will be understood that when the third housing 117 is the lower case, the second positioning portion 111 is provided on the third housing 117 to fix and support the second battery cell 103, and when the fourth housing 119 is the lower case, the second positioning portion 111 is provided on the fourth housing 119 to fix and support the second battery cell 103. When installed on the side of the second case 101, the second positioning portion 111 may be provided on either the third housing 117 or the fourth housing 119, and regardless of where it is provided, the fixation and support of the second battery cell 103 is ensured, thereby ensuring the normal operation of the second battery cell 103.

[0170] Also see Figure 23. In some embodiments, the energy storage power supply 100 includes an inverter 201, a battery management system 203, a motherboard 25, and a front panel 27 located outside the second case 101.

[0171] Here, the inverter 201 can be provided on the second battery cell 103 and electrically connected to the second battery cell 103, converting DC electricity from the second battery cell 103 into AC electricity and supplying it to the electrical appliances.

[0172] The battery management system 203 is provided between the second battery cell 103 and the inverter 201 and is used to monitor the status information of the second battery cell 103, such as current, temperature, or voltage, thereby preventing the second battery cell 103 from being overcharged, over-discharged, short-circuited, etc., and protecting the second battery cell 103 from damage.

[0173] The motherboard 25 may be electrically connected to the second battery cell 103 and the inverter 201, and receives user commands through the user input interface to control the charging or discharging process of the second battery cell 103 and the inverter 201.

[0174] The front panel 27 is electrically connected to the motherboard 25 and can display information such as the current remaining battery level and battery temperature of the energy storage power supply 100. The front panel 27 may further include a port for connecting the energy storage power supply 100 to an electrical device and a port for connecting to a charging device, so that the second battery cell 103 can supply power to the electrical device and be charged by the charging device.

[0175] In one embodiment, the stored energy power supply 100 may further include a handle 29 and foot pads 31 .

[0176] Here, the handle 29 is U-shaped and connected to the fourth housing 119, and is also foldable and can be stored in a groove formed by the fourth housing 119, making it easy to lift and set up the energy storage power supply 100, which is labor-saving and practical.

[0177] In one example, the handle 29 may be integrally molded from hollow aluminum material to ensure support strength while reducing the weight of the stored energy power source 100 .

[0178] In one embodiment, there may be multiple foot pads 31 mounted on the bottom of the third housing 117 to increase the frictional force at the bottom of the energy storage power supply 100, prevent the energy storage power supply from accidentally slipping, colliding, or falling, and improve the safety of the energy storage power supply 100.

[0179] In one example, the material of the foot pad 31 may be plastic to reduce costs while ensuring friction.

[0180] See Figure 11. In some embodiments, the second positioning portion 111 and the second case 101 are an integrally molded part.

[0181] In this way, the continuity and structural strength of the second positioning part 111 and the second case 101 are improved, and the safety and stability of the energy storage power supply 100 are ensured.

[0182] Specifically, in one embodiment, the second positioning portion 111 and the second case 101 are integrally molded parts, which can improve the stability of the connection between the second positioning portion 111 and the second case 101 and provide the second case 101 with good supporting strength. This ensures that the second positioning portion 111 is stably connected to the first end 1301 of the second battery cell 103, and further ensures the safety of the second battery cell 103.

[0183] In one embodiment, the second positioning portion 111 and the second case 101 can be integrally molded by injection molding or other processes, thereby ensuring that the second positioning portion 111 and the second case 101 are integrally molded parts, thereby reducing the use of brackets and the space required for installation. No specific limitations are set here.

[0184] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, combinations, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is limited only by the claims and their equivalents.

[0185] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to and benefits from Chinese Patent Application Nos. 202310738695.2 and 202321597643.X, filed with the State Intellectual Property Office of China on June 20, 2023, the entire contents of which are incorporated herein by reference, and also claims priority to and benefits from Chinese Patent Application Nos. 202410160594.6 and 202420281888.X, filed with the State Intellectual Property Office of China on February 4, 2024, the entire contents of which are incorporated herein by reference. [Explanation of symbols]

[0186] 100 Energy storage power source 10 First Case 11. Storage cavity 12 First positioning part 121 Positioning groove 13 First Housing 131 Storage groove 132 First through hole 14 Second Housing 20 First battery cell 21 pouch battery cells 22 prismatic battery cells 23 Cylindrical battery cells 24 Sheet-type battery cells 231 First pole pillar 232 Second pole 30 Reinforcing rib 40 Busbar 41 First bus bar 42 Second bus bar 43 Third bus bar 44 Fourth bus bar 45 First Collection Board 46 Second Collection Board 47 Third Collection Board 48 Fourth Collection Board 50 cover plate 60 Sealing Ring 70 panels 80 Bracket 100 Energy storage power source 101 Second Case 103 Second battery cell 15 Fixtures 17 Electrical connection parts 19 Collection Board 201 Inverter 203 Battery Management System 25 Motherboard 27 Front Panel 29 Handle 31 Foot Pads 111 second positioning part 112 Storage Cavity 113 Inner bottom wall 115 Inner wall 117 Third Housing 119 Fourth Housing 1301 First end 1302 Second end 133 Electrode 151 Split bracket 152 screws 1131 Retaining post 1132 limit bar 1133 S-shaped side 1151 Integrated Bracket 1331 Third pole pillar 1332 Fourth pole pillar 1511 Second through hole

Claims

1. In energy storage power sources, a case, the case having an inner wall provided with a first positioning portion, the first positioning portion and the case having an integrated structure, the first positioning portion including a positioning groove; a plurality of battery cells, each of the battery cells including a first end and a second end opposite to the first end, the battery cells having two electrodes, the first ends of the battery cells being inserted into the first positioning portion; a plurality of second positioning portions are formed, and the second positioning portions are fasteners that fasten second ends of the battery cells; a bus bar electrically connected to two electrodes of the battery cell; an inverter disposed on the battery cell, electrically connected to the battery cell, and configured to convert direct current electricity from the battery cell into alternating current electricity.

2. 2. The energy storage power supply according to claim 1, wherein the battery cell is a rectangular battery cell, two electrodes of the battery cell are provided at a second end of the battery cell, the bus bar is provided at one side of the fastener away from the battery cell, the fastener includes a limiting groove, and the second electrode of the battery cell passes through the limiting groove and is electrically connected to the bus bar.

3. The energy storage power supply according to claim 2 , further comprising an adhesive, the adhesive being used to fix the first end of the battery cell and the positioning groove.

4. 2. The energy storage power supply according to claim 1, wherein the battery cells are cylindrical battery cells, two electrodes of the battery cells are provided at second ends of the battery cells, the bus bar is provided at one side of the fixture away from the battery cells, and the second electrodes of the battery cells are electrically connected to the bus bar.

5. 2. The energy storage power supply according to claim 1, wherein the battery cells are cylindrical battery cells, and two electrodes of the battery cells are respectively provided at a first end and a second end of the battery cells, and the bus bars include a third bus bar and a fourth bus bar, the third bus bar is provided on one side of the case away from the battery cells and is electrically connected to the first end of the battery cells, and the fourth bus bar is provided at a second end of the battery cells and is electrically connected to the second end of the battery cells.

6. 6. The energy storage power supply according to claim 5, wherein an outer wall surface of the bottom of the case is recessed inward to form an accommodating groove, the third bus bar is disposed in the accommodating groove, the first positioning portion includes a first through-hole penetrating the bottom of the case, and a first end of the battery cell is disposed in the first through-hole and electrically connected to the third bus bar.

7. The energy storage power supply according to claim 5 , further comprising a cover plate, the cover plate being attached to an outer wall surface of the case to cover the receiving groove.

8. 8. The energy storage power supply of claim 7, further comprising a sealing ring, said sealing ring sealingly connecting said cover plate and an outer wall surface of the case.

9. The energy storage power supply according to claim 1 , further comprising a battery management system, wherein the battery management system is provided between the battery cells and the inverter and is used to monitor status information of the battery cells.

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