Storage energy power source

Abstract

To provide a storage energy power source, in which the number and kind of relevant components are fewer, the assembly steps are fewer, the cost is lower, the space use efficiency of the product is higher, and the product size of the whole is smaller.SOLUTION: A storage energy power source includes: a second case in which a second positioning part is provided on an inner wall of the second case; at least one second battery cell in which a first end of the at least one second battery cell is inserted to the second positioning part and a second end of the at least one second battery cell, which is opposite to the first end, includes two electrodes; a fixing tool that fixes the second end of the at least one second battery cell; and an electric connection component that is electrically connected to the second end of the at least one second battery cell.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] In the 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, and the battery module is assembled with components such as battery cells, battery cell brackets, bus bars, a collecting plate, 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 has a large number and variety of related structural components and a large number of assembly processes, which increases costs. In addition, since installation space is reserved, the space utilization rate of the product 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, 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-like 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 mounted on the top of the battery cell such that the two electrodes pass through the limiting groove, and the bus bar is mounted on the bracket.

[0009] In some embodiments, a housing cavity is provided within the case, 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 accommodated in the positioning groove.

[0010] In some embodiments, the stored energy power source includes a fixing adhesive, the fixing adhesive being located in the locating groove and fixedly connecting the battery cell and 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 receiving 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 is inserted into the second positioning portion, and two electrodes are 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-mentioned energy storage power supply, a second positioning portion is provided on the inner wall of the second case, and the first end of the second battery cell can be directly inserted into the second positioning portion, without the need to be fixed by a bracket and then assembled to the second case. This can reduce the number of parts and simplify the installation procedure, reduce costs, and reduce the volume of the energy storage power supply. In addition, the second end of the second battery cell can be fixed by a fastener and connected to an electrical connection part, thereby achieving the overall fixation and electrical connection of the second battery cell in 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 description of the drawings]

[0016] [Figure 1] FIG. 1 is a structural schematic diagram of an energy storage power source according to an embodiment of the present application; [Diagram 2] FIG. 2 is a schematic diagram of the internal structure of an energy storage power source according to an embodiment of the present application; [Diagram 3] FIG. 2 is a structural schematic diagram of a first housing according to an embodiment of the present application. [Figure 4]FIG. 2 is an exploded schematic diagram of an energy storage power source according to an embodiment of the present application. [Diagram 5] FIG. 2 is another exploded schematic diagram of an energy storage power source according to an embodiment of the present application. [Figure 6] FIG. 2 is another exploded schematic diagram of an energy storage power source according to an embodiment of the present application. [Figure 7] FIG. 2 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] FIG. 1 is an exploded schematic diagram of an energy storage power source according to an embodiment of the present application. [Figure 12] FIG. 2 is a schematic three-dimensional assembly diagram of an energy storage power source according to an embodiment of the present application. [Figure 13] FIG. 2 is a schematic three-dimensional assembly diagram of an energy storage power source according to an embodiment of the present application. [Figure 14] 1 is an overhead 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 an overhead 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 an overhead 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 an overhead 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. [Diagram 23] FIG. 2 is another exploded schematic diagram of an energy storage power source according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, the embodiments of the present application will be described in detail. 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 only used 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 achieving different configurations of the present application. In order to simplify the disclosure of the present application, specific example parts and installations are described. Of course, these are merely examples and are not intended to be limitations on the present application. In addition, the present application uses repeated reference numerals and / or characters in different examples, and this repetition is for the purpose of simplifying and clarifying the description, and does not indicate a relationship between the various embodiments and / or installations discussed. In addition, the present application provides examples of specific processes and materials, but one of ordinary skill 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 the relative importance or number of technical features. Thus, a feature qualified as "first" or "second" may be expressly or implied to include one or more features. In the description of this application, "plurality" means two or more unless specifically qualified otherwise.

[0020] In the description of this specification, the terms "one embodiment," "some embodiments," "exemplary embodiments," "examples," "examples," or "some examples" mean that the specific features, structures, materials, or characteristics of the described embodiment or example are included in one or more of the embodiments or examples of this application. The denotative expressions of the above terms in this specification 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 as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," and the like are based on the orientations and positional relationships shown in the figures, and are intended solely to illustrate 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 and operated in a particular orientation, and therefore should not be construed as limitations of this application.

[0022] In this application, unless otherwise clearly specified or limited, the expression that a first feature is "above" or "below" a second feature includes not only the case where the first feature and the second feature are in direct contact with each other, but also the case where they are not in direct contact with each other but are in contact with each other through another feature interposed therebetween. Moreover, the expression that a first feature is "above", "upper", or "on the upper surface" of a second feature means that the first feature is located just above or diagonally above the second feature, or simply that the horizontal elevation of the first feature is higher than that of the second feature. The expression that a first feature is "below", "below", or "on the lower surface" of a second feature means that the first feature is located just below or diagonally below the second feature, or simply that the horizontal elevation of the first feature is lower than that 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, mechanical or electrical, direct or indirect through an intermediate, or two elements may be in internal communication or interacting with each other. Those skilled in the art will be able to understand the specific meaning of these terms in the present application according to 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 in the first case 10. A first positioning portion 12 is provided in the receiving cavity 11. The first positioning portion 12 has a first hole 13 and a second hole 14. The first hole 13 is a hole in the first hole 13. The first hole 13 is a hole in the first hole 14. first A positioning groove 121 is provided. At least one first battery cell 20 is first The fixing adhesive is placed in the positioning groove 121. first The first battery cell 20 is located in the positioning groove 121. first The side walls of the positioning groove 121 are fixedly connected.

[0025] In the above-mentioned energy storage power source 100, a first positioning portion 12 is provided on the inner wall surface of the accommodation cavity, and the first positioning portion 12 has first A positioning groove 121 is provided, and at least one first battery cell 20 is first The first battery cell 20 is accommodated in the positioning groove 121 and fixed to the first positioning portion 12 by a fixing adhesive, so that the first battery cell 20 is directly first The battery module can be mounted in the positioning groove 121, which eliminates the need to assemble the 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 a receiving cavity 11, and a first positioning portion 12 is received in the receiving cavity 11. The first positioning portion 12 is provided at the bottom of the energy storage power supply 100 and fixedly connected to the bottom wall of the receiving cavity 11. The first positioning portion 12 is: first The positioning groove 121 is formed by surrounding it. first The positioning groove 121 is used to accommodate the first battery cell 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 source 100. first After being arranged in order in the positioning groove 121, first A fixing adhesive can be injected into the positioning groove 121, and after the fixing adhesive solidifies, the connection between the first battery cell 20 and the first positioning portion 12 is completed. The fixing adhesive can use the arrangement interval between the first battery cells 20 to connect the first battery cell 20 and the first positioning portion 12 as a whole, so that there is no need to set other connecting parts, and it is possible to reduce the number of parts, optimize the product structure and assembly process, increase the volumetric energy density and mass energy density of the product, and improve portability while reducing costs. In another embodiment, the first positioning portion 12 can be provided in another part of the energy storage power source 100 and fixedly connected to the ceiling wall or side wall of the receiving cavity 11. In yet another embodiment, the first battery cell 20 can be partially or completely received in 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 manner, the structural strength of the first positioning portion 12 and the first case 10 can be improved.

[0029] Specifically, please refer to FIG. 2 and FIG. 3. In one embodiment, the reinforcing rib 30 may be a plate-like structure, and both sides of the plate-like reinforcing rib 30 are connected to the first positioning part 12 and the first case 10, respectively, so that the first positioning part 12 and the first case 10 are integrated to reduce the shaking of the first positioning part 12. It will be understood that in order to reduce the weight of the reinforcing rib 30, it is also possible to select other shapes for the reinforcing rib 30, drill holes on the surface, or select a hollow structure. The reinforcing rib 30 is made of the same material as the first positioning part 12 and the first case 10, and can be connected by welding, where the materials of the reinforcing rib 30, the first positioning part 12, and the first case 10 may be steel, copper, aluminum, etc. The reinforcing rib 30 may be provided on both opposing sides of the first positioning part 12, or may be evenly provided around the first positioning part 12 to enhance the fixing effect. In addition, if the reinforcing ribs 30 include vertical reinforcing ribs 30, they may also include horizontal 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 manner, the safety of the first battery cell 20 can be improved.

[0032] Specifically, in one embodiment, the structural adhesive is capable of withstanding large loads. firstInjecting the structural adhesive into the positioning groove 121 can enhance the impact resistance of the first battery cell 20. When the first case 10 of the energy storage power source 100 is damaged and directly impacts the first battery cell 20, the structural adhesive can withstand part of the impact force and at the same time transmit the impact force to the entire first battery cell 20 to reduce the impact damage. In addition, the structural adhesive has good anti-corrosion properties, so that even if some of the first battery cells 20 leak electrolyte due to structural damage or electrolyte erupts from the explosion-proof valve (not shown) of the first battery cell 20 due to thermal runaway, the structural adhesive can prevent further leakage of electrolyte and avoid corrosion of other first battery cells 20 and other structural components. At the same time, the structural adhesive has good thermal conductivity and transmits heat generated from 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 stacked manner.

[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-like battery cell 24 can be a pouch battery cell 21 adopting an aluminum plastic film or a steel plastic film, which can reduce the thickness of the external housing and increase the energy density of each first battery cell 20. At the same time, when 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, so as to enhance the safety of the pouch battery cell 21. The width of the pouch battery cell 21 can match the width of the first positioning portion 12, and can be arranged to be stacked along the length direction A. Of course, the width of the pouch battery cell 21 can be about half the width of the first positioning portion 12, and then firstThe pouch battery cells 21 can be placed in two rows in the positioning grooves 121, while also reserving gaps for accommodating fixing adhesive.

[0036] 5, in another embodiment, the sheet-shaped battery cells 24 may be rectangular battery cells 22 with an external housing material such as aluminum alloy or stainless steel. The rectangular battery cells 22 have high structural strength and good mechanical load resistance. The width of the rectangular battery cells 22 may also match the width of the first positioning portion 12, and the rectangular battery cells 22 may be arranged to 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 manner, the structure of the energy storage power supply 100 can be simplified.

[0039] Specifically, see FIG. 4 and FIG. 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, and these two electrodes are simultaneously provided 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 all provided on the upper side, lower side, or other side of the first battery cell 20, and thus the electrodes of all the first battery cells 20 can be connected on only one side of the first positioning portion 12, and this more concentrated connection method reduces the required connection space, thereby contributing to simplifying the structure of the energy storage power source 100. As shown in FIG. 4, in one embodiment, the first battery cell 20 may be a pouch battery cell 21. The two electrodes of each pouch battery cell 21 are both arranged facing 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, so that the two pouch battery cells 21 output power in parallel. The first bus bars 41 can be connected in series or parallel to output or input power to the outside or inside. The material of the first bus bar 41 can be copper, aluminum, nickel, or an alloy material. After the first bus bar 41 is fixed in the correct position by 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 the electrical connection between the first bus bar 41 and the electrodes of the pouch battery cells 21 can also be realized through other connection methods such as twisting and crimping.

[0040] In addition, the energy storage power source 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 cell 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 through a screw. After the fixing of the first collecting plate 45 is completed, an electrical connection method such as laser welding is used to connect the nickel strap of the first collecting plate 45 to the first bus bar 41, thereby realizing the 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 arranged upward. The energy storage power supply 100 may include a bracket 80. The bracket 80 may include a limiting groove, and the bracket 80 is provided on 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 can avoid the two electrodes of the same rectangular battery cell 22 being electrically connected 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 completing the positioning of the electrodes of the rectangular battery cells 22 using the bracket 80, the electrodes of two adjacent rectangular battery cells 22 can be connected by one second bus bar 42, and the second collecting plate 46 can be connected to the second bus bar 42. The second busbar 42 and the first busbar 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. firstA first through hole 132 is provided on the bottom wall of the positioning groove 121. The bottom electrode of the cylindrical battery cell 23 is inserted through the first through hole 132. The energy storage power supply 100 includes a plurality of bus bars 40. The plurality of bus bars 40 are used to connect the plurality of cylindrical battery cells 23 in series and / or parallel.

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

[0044] Specifically, please refer to FIG. 6 to FIG. 9. In one embodiment, two electrodes of the cylindrical battery cell 23 are arranged at both ends, and these two electrodes can be distinguished as a first pole 231 and a second pole 232. The first pole 231 and the second pole 232 are current interfaces when power is supplied from the cylindrical battery cell 23 or when the cylindrical battery cell 23 is charged. The first pole 231 can be disposed at the bottom end of the cylindrical battery cell 23 as a positive pole, and the second pole 232 can be disposed at the top end of the cylindrical battery cell 23 as a negative pole, but of course, the polarities and positions of the first pole 231 and the second pole 232 can be reversed. The bus bars 40 are divided into a third bus bar 43 and a fourth bus bar 44. The first pole 231 can be electrically connected to the first pole 231 of the adjacent cylindrical battery cell 23 through the first through hole 132 via the third bus bar 43. The second pole 232 may be directly electrically connected to the second pole 232 of the adjacent cylindrical battery cell 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 source 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, so that the status information of each cylindrical battery cell 23 can 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 characteristics and functions to the first bus bar 41, and the third collecting plate 47 and the fourth collecting plate 48 have similar characteristics and functions to the first collecting plate 45, so that they will not be repeated here.

[0045] Please refer to 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 penetrates the bottom wall of the accommodating groove 131. A plurality of bus bars 40 are located in the accommodating groove 131. A 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] Specifically, see Figures 6 and 8. In one embodiment, the cylindrical battery cell 23 is first The cylindrical battery cell 23 is vertically accommodated in the positioning groove 121. The outer wall surface of the bottom of the first case 10 is recessed inward to form an accommodating groove 131. The first pole 231 of the cylindrical battery cell 23 enters the accommodating groove 131 through the first through hole 132. The bus bars 40 may include a third bus bar 43. The third bus bar 43 can connect the first pole 231 in the accommodating groove 131, thereby integrating the first pole 231 and the third bus bar 43 into the bottom of the first case 10, improving the overall integration and reducing the volume of the product. The cover plate 50 is provided to cover the accommodating groove 131, thereby further improving the integrity of the first case 10 and protecting the first pole 231 and the third bus bar 43. The cover plate 50 is fixed to the first case 10 by a bolt, but of course, other fixing methods can also be used, and the present invention is not limited thereto. In another embodiment, the energy storage power supply 100 may include a third collecting plate 47 that 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. A thermally conductive adhesive 50 connects the cover plate 50 and the bus bar 40.

[0049] In this manner, the temperature of the busbar 40 can be reduced.

[0050] Specifically, see FIG. 6. In one embodiment, the bus bars 40 may include a third bus bar 43. When a current passes through the third bus bar 43, a certain current loss occurs, which generates heat. This collected heat increases the temperature of the third bus bar 43 and the cylindrical battery cells 23, causing safety risks such as fire. Therefore, by filling a thermally conductive adhesive between the third bus bar 43 and the cover plate 50, the heat from the third bus bar 43 can be transferred to the cover plate 50, and the heat can be dissipated from the cover plate 50 to the surrounding environment, thereby achieving a cooling effect for the third bus bar 43 and the cylindrical battery cells 23. The cover plate 50 may be made of an aluminum material, which has a relatively good heat transfer effect. In addition, the first case 10 can also adopt a material with a good heat transfer effect, such as an aluminum material, so that the heat from the cover plate 50 can be further transferred to the first case 10, thereby enhancing the cooling effect for the third bus bar 31 and the cylindrical battery cells 23.

[0051] See Fig. 6. In some embodiments, the energy storage power supply 100 further includes a sealing ring 60. The sealing ring 60 hermetically connects 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] Specifically, please refer to FIG. 6. In one embodiment, an accommodating groove 131 is formed on 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 will enter the accommodating groove 131, and the invaded water vapor will cause the bus bar 40 to rust or, in the worst case, cause a short circuit. Therefore, when the cover plate 50 covers the accommodating groove 131, a sealing ring 60 is provided between the cover plate 50 and the outer wall of the first case 10 to further strengthen the sealing effect of the accommodating groove 131 and isolate the bus bar 40 in the accommodating groove 131 from external water vapor.

[0054] Please refer to Figures 1, 2, 8, 9, and 10. In some embodiments, the 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, FIG. 2, FIG. 8, and FIG. 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 FIG. 1, FIG. 2, FIG. 8, FIG. 9, and FIG. 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 or the left and right portions of the first case 10, respectively, or may be disposed at two diagonal corners of the first case 10. 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 form a surrounding receiving cavity 11 and receive the first battery cell 20. This can improve the ease of assembly and disassembly repair.

[0057] Also see the drawings. In some embodiments, the energy storage power source 100 may further include a panel 70 disposed on the first case 10. The panel 70 can display information such as the current charge of the energy storage power source 100 and the battery temperature. The panel 70 further includes a port for connecting the energy storage power source 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 the related art, two battery brackets are generally used to fix both ends of the battery cells, the corresponding electrical connection parts, and the collecting plate, and then the battery pack is formed and then attached to the external housing. This makes the energy storage power source have many parts, a large volume, high costs, and complicated installation procedures. Meanwhile, the external housing needs to reserve space for the battery pack, which further increases the volume of the energy storage power source.

[0059] Please refer to Fig. 11 to Fig. 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, the 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, the at least one second battery cell 103 having a first end 1301 inserted into the second positioning portion 111 and having two electrodes 133 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-mentioned energy storage power supply 100, the 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, and there is no need to assemble the second battery cell 103 to the second case 101 after fixing it with a bracket. This reduces the number of parts and simplifies the installation procedure, and does not require reserved installation space in the second case 101, reducing the cost and reducing the volume of the energy storage power supply 100. In addition, the second end 1302 of the second battery cell 103 can be fixed by the fastener 15 and connected to the electrical connection part 17, thereby realizing the overall fixation and electrical connection of the second battery cell 103 in 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 source 100 is surrounded to form an accommodating cavity 112, and a second positioning portion 111 is provided in the accommodating cavity 112, and the second positioning portion 111 is used to guide and fix one end of at least one second battery cell 103. Compared with the method of fixing both ends of the second battery cell 103 with two brackets respectively, the use of brackets can be reduced, assembly steps can be omitted, and production costs can be reduced.

[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 source 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 lower end and the upper end, the left end and the right end, the front end and the rear end, or other ends provided in opposite directions of the second battery cell 103, respectively. This is related to factors such as the shape and the arrangement direction of the second battery cell 103. By respectively fixing the first end 1301 and the second end 1302 by the second positioning part 111 and the fastener 15, 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 is 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 corresponds to one of the brackets being integrated into the second case 101, i.e., the second positioning portion 111 and the second case 101 are 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 to realize 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, bolts, etc.), does not require reserved installation space, and can reduce costs and make the product more compact.

[0065] In one embodiment, the second positioning portion 111 may be provided at different positions on the inner wall of the second case 101, such as the inner wall, the inner bottom wall, or other positions of the second case 101. This ensures that the first end 1301 of the at least one second battery cell 103 is fixed to the second positioning portion 111, thereby ensuring that one end of the at least one second battery cell 103 is stably provided in the energy storage power source 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, when the second positioning portion 111 is a cylindrical slot, the first end 1301 of at least one second battery cell 103 each forms 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 source 100 includes a fastener 15, which is removably connected within the energy storage power source 100, is disposed opposite the second positioning portion 111, and can be used to fix the second end 1302, ensure that the second end 1302 is stably disposed within the energy storage power source 100, improve the overall stability of the at least one second battery cell 103, and ensure the safe operation of the energy storage power source 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] In one embodiment, as shown in Fig. 11, there are a plurality of electrical connection parts 17, each of which is provided with a plurality of locating holes (not shown). The fixture 15 is provided with a plurality of locating posts (not shown) corresponding to the plurality of locating holes, so as to connect the locating holes and the locating posts in a corresponding manner. For example, the locating holes and the locating posts may form an interference fit, be fixed by screws, or be connected in other ways, so as to ensure that the electrical connection parts 17 are fixedly mounted on the fixture 15 and have good connection stability.

[0070] In one embodiment, the fastener 15 is formed with a plurality of second through-holes 1511, so as to ensure that the second end 1302 of at least one second battery cell 103 is exposed through the plurality of second through-holes 1511. This ensures that the electrical connection part 17 is electrically connected to the at least one second battery cell 103, so as to ensure that the energy storage power source 100 can discharge / output power to the outside or charge / input power to the inside.

[0071] It can be understood that, as shown in Figures 11 and 12, the electrical connection part 17 forms an electrical connection with the at least one second battery cell 103 by welding, so that the electrical connection part 17 connects the at least one second battery cell 103 in series and / or parallel, and the energy storage power supply 100 can provide a suitable 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 global positive connection port, and connect the negative poles of at least one second battery cell 103 to form a global 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, and ensure 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 the negative pole connected to the two ends of the electrical connection part 17 become a positive pole connection port and a negative pole 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 usage needs of the user.

[0074] In one embodiment, as shown in Figures 11 and 12, 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 or the like, which ensures that the energy storage power supply 100 timely collects and obtains the 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 part 17 and each second battery cell 103 are welded, the collecting plate 19 can be fixed to the corresponding position on the electrical connection part 17 through a screw. After the fixing of the collecting plate 19 is completed, the nickel strap of the collecting plate 19 is connected to the electrical connection part 17 through an electrical connection method such as laser welding, thereby realizing the electrical connection between the collecting plate 19 and the electrical connection part 17.

[0076] In addition, 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 conductivity, 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 the normal charging and discharging of the second battery cell 103, saves the quantity and arrangement space of the electrical connection part 17 and the collecting plate 19, and contributes to the miniaturization of the design of the energy storage power supply 100.

[0077] Please refer to 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 side wall 115 of the second case 101, and the mounting 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, i.e., the second positioning portion 111 does not contact the side of the second case 101. This can form an installation space for the second battery cell 103 inwardly in a direction perpendicular to the page. 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, which ensures 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 provided 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, that is, the second positioning portion 111 is in direct contact with the side edge of the second case 101. This can form an installation space for the second battery cell 103 inwardly in a direction perpendicular to the paper surface. 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 to form a stable support structure, 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 regarded as a 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 stability of the installation 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 a sheet or block shape and can 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 used to mount 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 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 provided here.

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

[0091] Please refer to Fig. 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 portion 111 is formed between the retaining posts 1131 in two rows and two columns adjacent to each other. second This is a positioning groove.

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

[0093] Specifically, in one embodiment, a plurality of retaining posts 1131 are arranged in a plurality of rows and a plurality of columns, and between adjacent two rows and two columns of retaining posts 1131 second Positioning grooves are defined, and a plurality of second battery cells 103 are respectively spaced apart to ensure good safety.

[0094] A spaced apart stud formed by a plurality of studs 1131. second It will be understood that the positioning grooves allow the multiple second battery cells 103 to be spaced apart, thereby reducing problems such as thermal expansion due to direct contact between the multiple second battery cells 103, and the situation in which the multiple second battery cells 103 are pushed against each other and deformed when the energy storage power source 100 is collided, thereby reducing safety risks.

[0095] In one implementation, as shown in FIG. 14 , cylindrical slots can be defined between two adjacent 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 peripheral wall of each retaining post 1131 is formed as an arc-shaped surface and is arranged in a surrounding manner to form a cylindrical slot. The cylindrical slot matches the outer peripheral wall of the second battery cell 103, so as to ensure the connection effect between the second battery cell 103 and the second positioning portion 111 and reduce shaking.

[0097] In another embodiment, second 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 fastening post 1131 is preferably equal to or less than the height of the second case 101 in FIG. 11, so 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 fastening 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 can be made to exceed the height of the second case 101 in FIG. 11, and other connecting parts can be used to stably fix the electronic components (such as an 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 here.

[0099] Here, the second case 101 in FIG. 11 may be a single-sided second case 101, for example, a lower case incorporating the second positioning portion 111, a left 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] Please refer to Fig. 16. In some embodiments, the inner bottom wall 113 of the second case 101 is formed with a plurality of limiting bars 1132, and the plurality of limiting bars 1132 include S-shaped side surfaces 1133, and the second positioning portion 111 is formed between two adjacent S-shaped side surfaces. third This is a positioning groove.

[0101] In this manner, the first end 1301 of the cylindrical second battery cell 103 third The second battery cell 103 is inserted into the positioning groove, and the side surface of the second battery cell 103 is in close contact with the S-shaped side surface 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 includes two S-shaped side surfaces 1133 arranged in opposite directions, and a plurality of S-shaped side surfaces 1133 arranged at intervals in the row direction. third A positioning groove is formed, and a plurality of electrodes are arranged in a row direction. third A positioning groove is formed, which ensures that the second battery cells 103 are respectively installed in the second positioning portion 111 at intervals, thereby improving safety.

[0103] It will be understood that the spaced grooves using the S-shaped side 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 pushed 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 can be defined between the two S-shaped sides 1133 of each limiting bar 1132, which can ensure 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 limit bars 1132 may also be in other quantities. third The positioning groove may also be in other shapes, such as a rectangle, to ensure that the second battery cells 103 of different shapes are stably installed. No specific limitation is provided here.

[0106] Please refer to Figures 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 the cost.

[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 supported 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 by injection molding, which can save external bracket and mounting space, improve the structural strength of the second case 101 and the integrated bracket 1151, and ensure 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 , an integrated bracket 1151 can be formed on two opposing inner walls 115 in the second case 101, thereby forming a plurality of rectangular positioning grooves that can be used to install a sheet-shaped or block-shaped second battery cell 103, so as to ensure the stability and safety of the second battery cell 103.

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

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

[0114] 21, in one embodiment, the integrated bracket 1151 may be formed on a single inner wall 115 in the second case 101 (as shown in FIG. 21), or may be formed on two adjacent inner walls 115 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, and is defined with a plurality of ring-shaped positioning grooves that can be used to install the hollow cylindrical second battery cell 103, ensuring the stability and safety of the second battery cell 103. No specific limitations are provided here.

[0115] In summary, the second case 101 and the integrated bracket 1151 are 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 groove is 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 of 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 to 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 is connected to 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, thereby ensuring 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 enhance the connection effect of the second battery cell 103 while dissipating heat generated by the second battery cell 103 through the second case 101, thereby effectively cooling the second battery cell and improving safety.

[0123] In summary, by having the positioning groove be circular or rectangular, it is possible to ensure stable installation of the cylindrical second battery cell 103 and the rectangular second battery cell 103, thereby improving the adaptability of the installation of second battery cells 103 of 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 source 100 can operate using either a cylindrical battery cell or a sheet-shaped battery cell to meet the user's power usage needs, and no specific limitations are set herein.

[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 source 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-like battery cell can be a pouch battery cell 21 adopting an aluminum plastic film or a steel plastic film, which has the advantages of small volume and large energy density of a single second battery cell 103. At the same time, when a safety risk occurs, the outer housing of the pouch battery cell 21 can also release internal stress in the form of expansion or cracking, so as to enhance the safety of the pouch battery cell 21. As shown in FIG. 15, FIG. 18 and FIG. 19, the width of the pouch battery cell 21 can match the width (e.g., left-right direction) of the second positioning portion 111, and can be arranged to be stacked along the length direction (e.g., front-back direction). Of course, the width of the pouch battery cell 21 can be about half the width of the second positioning portion 111, so that the pouch battery cells 21 can be arranged in two rows in the second positioning portion 111, and at the same time, a gap can be reserved for accommodating adhesive, ensuring the stable fixation of the pouch battery cell.

[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 and the welding space is reduced, contributing 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, the first end 1301 and the second end 1302 are arranged in opposite directions and are stably connected through the second positioning portion 111 and the fixing part 15 respectively, thereby ensuring the safe operation of the second battery cell 103.

[0133] In one embodiment, the second battery cell 103 includes two electrodes 133 located at a 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., thus ensuring the input and output of power.

[0134] 11 and 22, in one embodiment, 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 of 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 no specific limitation is set here.

[0135] That is, in one embodiment, of the two electrodes 133, one 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 source 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, thereby reducing the number of electrical connection parts 17 and collecting plates 19, etc., arranged at the first end 1301, reducing the welding steps, saving installation space, reducing costs, and contributing to the compact design and good practicability of the energy storage power source 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 the electrodes 133, thereby ensuring the normal operation of the energy storage power supply 100. No specific limitations are provided 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 convex portion, 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 source 100.

[0141] Specifically, in one embodiment, the two electrodes 133 are protruding posts of different shapes or sizes, which makes it easy 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 appreciated that the convex pole may be a third pole 1331 and a fourth pole 1332 having different shapes and electrical properties as shown in FIG. 22, where the convex pole may be circular and elliptical to facilitate distinguishing tangents and ensure safe use.

[0143] That is, the circular protruding pillar may be a positive electrode and the elliptical protruding pillar may be a negative electrode, or the circular protruding pillar may be a negative electrode and the elliptical protruding pillar may be a negative electrode. Of course, the protruding pillar 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, the protruding post constituting one of the two electrodes 133, and another portion of the second end 1302 of the second battery cell 103 constituting 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 on the second end 1302 of the second battery cell 103, so that the protruding post serves as an electrode 133, that is, a terminal of the second battery cell 103.

[0147] In one embodiment, another part of the second end 1302 of the second battery cell 103 constitutes another of the two electrodes 133. That is, except for the area occupied by the protruding post, another electrode 133 may be formed on another part of the second end 1302, for example, another protruding post may be provided on another part of the second end 1302 to form another terminal of the second battery cell 103, so as to ensure that the second end 1302 of the second battery cell 103 can realize the functions of charging input and discharging output, while reducing the welding space for providing the second battery cell 103 at both ends, and improving practicality.

[0148] See Fig. 11. In some embodiments, the fixture 15 includes a split bracket 151, the split bracket 151 is formed with a plurality of second positioning portions (not shown), the second positioning portions are used to fix the second end 1302, and the second positioning portions are provided with second through holes 1511 for the protruding posts to protrude therethrough.

[0149] In this manner, 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 removable bracket, which may be provided at the second end 1302 of the second battery cell 103 and 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 source 100.

[0151] It will be appreciated that, as shown in FIG. 11 , 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 is removably connected to the second case 101, thereby ensuring the assembly and maintenance / 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 is formed with a plurality of second through-holes 1511, the diameter of the second through-holes 1511 is smaller than the diameter of the second end 1302 of the second battery cell 103, and is arranged concentrically with the second positioning portion (not shown), so that the second end 1302 of the second battery cell 103 abuts against the second positioning portion, i.e., abuts against the split bracket 151 around the second through-hole 1511, thereby realizing the fixing of the second end 1302 of the second battery cell 103. In addition, the first end 1301 of the second battery cell 103 is fixed by the second positioning portion 111, so that it is ensured that the entire second battery cell 103 is stably fixed within the energy storage power source 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, so that the second battery cell 103 is electrically connected to the electrical connection part 17, and the normal charging and discharging process of the second battery cell 103 is ensured.

[0155] In one embodiment, the second through-hole 1511 may be a cylindrical hole or a hole of other shapes, 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 limitation is provided here.

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

[0157] In this way, the second battery cell 103 is stably installed within 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, the fixing adhesive only needs to be injected into the receiving cavity 112 of the second case 101 and guided 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 source 100, and that the second battery cells 103 as a whole are stably installed and operated safely.

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

[0161] On the one hand, the structural adhesive can withstand a large load. By injecting the structural adhesive into the gaps between the second battery cells 103, the impact resistance of the second battery cells 103 can be enhanced. When the second case 101 of the energy storage power source 100 is damaged and the second battery cells 103 are directly impacted, the structural adhesive can withstand part of the impact force and at the same time transmit the impact force to the entire second battery cells 103 to reduce 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 electrolyte erupts from the explosion-proof valve (not shown) of the second battery cells 103 due to thermal runaway, the structural adhesive can prevent further leakage of electrolyte and avoid corrosion of other second battery cells 103 and other structural components.

[0163] In addition, the structural adhesive also has good thermal conductivity, and can transfer heat generated from the second battery cell 103 to the second positioning portion 111 and the second case 101, thereby contributing to lowering 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] In this way, assembly and maintenance are easy, 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 a lower case and the fourth housing 119 may be an 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, or clamps, etc., to provide a relatively stable sealed environment, thereby ensuring the safe and stable operation of the second battery cell 103 in 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 / rear or left / right portions of the second case 101, respectively, or the third housing 117 and the fourth housing 119 may be disposed 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 a screw thread, a fastener, a clamp, 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 and can serve 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 and can serve 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 in either case, the fixing and support of the second battery cell 103 can be 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 disposed within the second case 101, a battery management system 203, a motherboard 25, and a front panel 27 disposed 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 an electrical appliance.

[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 may receive 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 source 100. The front panel 27 may further include a port for connecting the energy storage power source 100 to an electrical device and a port for connecting the energy storage power source 100 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 source 100 may further include a handle 29 and a foot pad 31 .

[0176] Here, the handle 29 is U-shaped and connected to the fourth housing 119, and at the same time, is foldable and can be accommodated in a groove formed by the fourth housing 119, so that the energy storage power supply 100 can be easily lifted and set up, which is labor-saving and practical.

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

[0178] In one embodiment, there may be multiple foot pads 31, which may be provided on the bottom of the third housing 117 to increase the frictional force at the bottom of the energy storage power source 100, prevent the energy storage power source from unintentionally slipping, colliding or falling, and improve the safety of the energy storage power source 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 arrangement space. No specific limitations are provided 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 the rights of Chinese Patent Application Nos. 202310738695.2 and 202321597643.X, filed with the State Intellectual Property Office of the People's Republic of China on June 20, 2023, the entire contents of which are incorporated herein by reference, and also claims priority to and the rights of Chinese Patent Application Nos. 202410160594.6 and 202420281888.X, filed with the State Intellectual Property Office of the People's Republic 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 first Positioning groove 13 First Housing 131 Storage Groove 132 First through hole 14 Second Housing 20 First Battery Cell 21 Pouch Battery Cell 22 Prismatic battery cells 23 Cylindrical battery cell 24 Sheet battery cells - 231 First pole pillar 232 Second pole 30 Reinforcing rib 40 Busbar 41 First bus bar 42 Second bus bar 43 Third busbar 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 Panel 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 Pad 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 Screw 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 being integrally formed; at least one battery cell, the battery cell including a first end and a second end opposite to the first end, the first end of the battery cell being inserted into the first positioning portion, and the second end of the battery cell being provided with two electrodes; A bus bar electrically connected to two electrodes of the battery cell; A plurality of second positioning portions are formed, and the second positioning portions are fasteners for fastening the second end; an inverter provided within the case, electrically connected to the battery cells, and configured to convert direct current electricity from the battery cells into alternating current electricity.

2. 2. The energy storage power source as claimed in claim 1, wherein the first positioning portion includes a plurality of fixing holes, and a first end of the battery cell is inserted into the fixing holes; the second positioning portion includes a plurality of second through holes, and a second end of the battery cell is inserted into the second through holes.

3. 3. The energy storage power source of claim 2, wherein the battery cells are cylindrical battery cells and the fixing holes are cylindrical.

4. 2. The energy storage power source as claimed in claim 1, wherein the first positioning portion includes a first positioning groove, the first positioning groove is formed on the bottom wall of the case and surrounds a cavity, the first positioning groove accommodates a first battery cell, and a first end of the battery cell is inserted into a bottom of the first positioning groove.

5. 5. The energy storage power source of claim 4, wherein the battery cell is a rectangular battery cell, the fastener includes a limiting groove, and the second electrode of the battery cell passes through the limiting groove.

6. 2. The energy storage power source according to claim 1, wherein the first positioning portion includes a plurality of retaining posts formed on the bottom wall of the case and arranged in an array, a second positioning groove is formed between four adjacent retaining posts, and a first end of the battery cell is inserted into the second positioning groove.

7. 2. The energy storage power source of claim 1, wherein the first positioning portion includes a plurality of limiting bars formed on an inner bottom wall of the case, the plurality of limiting bars include S-shaped side surfaces, a third positioning groove is formed between two adjacent S-shaped side surfaces, and a first end of the battery cell is inserted into the third positioning groove.

8. 2. The energy storage power source of claim 1, wherein the second positioning portion includes a plurality of second through holes, the bus bar is provided on a side of the fastener away from the battery cells, and a second end of the battery cell passes through the second through holes and is electrically connected to the bus bar.

9. 2. The energy storage power source of claim 1, further comprising a battery management system, wherein the inverter is disposed on the battery cells, and the battery management system is disposed between the battery cells and the inverter, and is used for monitoring status information of the battery cells.

Images