Energy storage power supply

Abstract

The utility model discloses an energy storage power supply. According to the energy storage power supply provided by the embodiment of the invention, the energy storage power supply comprises a battery module, a first shell, a second shell and a connecting assembly, and a fixing groove is formed in the inner side wall of the second shell; the connecting assembly comprises a second connecting piece and a first connecting piece, the first connecting piece is clamped in the fixing groove, the second connecting piece penetrates through the first shell and then is fixed in the first connecting piece, so that the first shell and the second shell are fixedly connected, and the battery module is arranged between the first shell and the second shell. According to the shell assembly, thermal stress generated in the injection molding process can be avoided, so that even if the shell assembly is applied to an energy storage power supply and bears the gravity action of a large-weight battery module, the joint of the first connecting piece and the second shell is not prone to cracking, and the service life of a product can be prolonged. In addition, the first connecting piece is detachably arranged, so that the injection molding time of the second shell can be shortened, the product productivity and efficiency can be improved, and the product cost is greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and more specifically, to an energy storage power supply. Background Art

[0002] In the related art, the shell of the energy storage power supply usually includes an upper shell and a lower shell, and the lower shell usually includes a beer nut or a hot-melt nut. The upper shell is connected to the lower shell by bolts in combination with the beer nut or the hot-melt nut. However, on the one hand, since the nut is usually made of metal and the lower shell is usually made of plastic, the thermal expansion coefficients are different, resulting in thermal stress between the lower shell and the nut after cooling. On the other hand, the connection between the nut and the lower shell is the main load-bearing point of the energy storage power supply. Especially for large-capacity energy storage power supplies, the force applied by the battery module of the energy storage power supply to the connection between the nut and the lower shell is very large. Therefore, after a period of use, the lower shell wrapping the nut is prone to cracking, resulting in failure of the shell connection and shortening the service life of the product. Utility Model Content

[0003] An embodiment of the present application provides an energy storage power supply.

[0004] The energy storage power supply in the embodiment of the present application includes a battery module, and the energy storage power supply further includes:

[0005] a first shell;

[0006] a second shell, wherein a fixing groove is formed on an inner side wall of the second shell;

[0007] The connecting component includes a second connecting member and a first connecting member, the first connecting member is clamped in the fixing groove, the second connecting member passes through the first shell and is fixed in the first connecting member, thereby fixedly connecting the first shell and the second shell, and the battery module is arranged between the first shell and the second shell.

[0008] The housing assembly provided herein features a first connector that is secured within the second housing, thus preventing thermal stress from occurring during the injection molding process. This prevents cracking at the connection between the first connector and the second housing, even when used in energy storage power supplies and subjected to the weight of heavy battery modules, thereby extending the product's service life. Furthermore, the removable first connector shortens the injection molding time of the second housing, improving product production capacity and efficiency while significantly reducing product costs.

[0009] In some embodiments, the first connecting member is a nut, and the second connecting member is a bolt.

[0010] In this way, the nuts and bolts have a simple structure and are easy to use, which helps to reduce the difficulty of assembly. At the same time, the nuts and bolts are standard parts that are low-cost and easy to purchase, which helps to reduce production costs.

[0011] In some embodiments, the first shell is a lower shell, the second shell is an upper shell, and the second connecting member passes through the first shell from the bottom of the first shell to connect to the second shell.

[0012] In this way, the lower shell serves as the main load-bearing structure. Adopting such a structure is particularly helpful in avoiding damage to the connection caused by thermal stress, thereby ensuring the load-bearing capacity of the lower shell, while also avoiding seeing the second connecting member hole for installing the second connecting member.

[0013] In some embodiments, the first shell and the second shell are frame-shaped, the first shell includes a first connecting column, the second shell includes a second connecting column that cooperates with the first connecting column, and the fixing groove is arranged on the inner side of the second connecting column.

[0014] Thus, since the mechanical stress is relatively concentrated at the second connecting column, adopting such a structure is particularly helpful in avoiding damage to this connection caused by thermal stress, thereby ensuring the load-bearing capacity of the second connecting column.

[0015] In some embodiments, the fixing groove is configured so that the first connecting member is laterally embedded in the fixing groove.

[0016] In this way, the assembly between the first connecting member and the second shell is facilitated.

[0017] In some embodiments, a plurality of rib structures are provided in the fixing groove, and the inner wall of the fixing groove and the plurality of rib structures clamp the first connecting member.

[0018] In this way, the fixing grooves and rib structures provided on the inner surface of the second shell can reduce the material consumption while ensuring the strength. In addition, the thickness of the second shell can be reduced to avoid the occurrence of injection molding defects.

[0019] In some embodiments, the rib structure presses against a side surface of the first connecting member and / or an end surface of the first connecting member away from the first shell.

[0020] In this way, the mechanical stress generated by the mutual compression between the second shell and the first connecting member can be absorbed by the rib structure, which is beneficial to further avoid cracking problems caused by stress and improve the service life of the product.

[0021] In some embodiments, the end surface of the first connecting member close to the first shell is attached to the inner wall surface of the fixing groove.

[0022] In this way, the contact area between the force direction of the first connecting member and the second shell can be increased, and the concentration of mechanical stress applied by the first connecting member to the second shell can be reduced.

[0023] In some embodiments, a protrusion is provided on an end surface of the first connecting member away from the second connecting member, the protrusion presses against the rib structure and the protrusion is at least partially embedded in the rib structure.

[0024] In this way, the first connecting member can be better fixed in the fixing groove, preventing the first connecting member from sliding.

[0025] In some embodiments, a single second connecting member is matched with at least two fixing grooves, and the at least two fixing grooves are stacked along the axial direction of the second connecting member.

[0026] In this way, if one of the fixing slots is damaged, the other one can be activated, and second connecting members of different lengths can also be adapted.

[0027] In some embodiments, a transition surface for guiding the first connecting member is provided at the entrance of the fixing groove.

[0028] In this way, the transition surface can facilitate the installation of the first connecting member.

[0029] In some embodiments, the transition surface includes a first transition surface and a second transition surface, one side of the second transition surface is connected to the inner wall of the fixing groove, and the other side is connected to the first transition surface, and the angle formed by the first transition surface and the inner wall of the fixing groove is greater than the angle formed by the second transition surface and the inner wall of the fixing groove.

[0030] In this way, the first transition surface can quickly send the first connecting part to the specified position, and the second transition surface can gradually make the first connecting part change from a clearance fit to an interference fit, so that the force transition is uniform and the product is not easily damaged.

[0031] An energy storage power supply according to another embodiment of the present application is characterized by comprising any of the housing components described above.

[0032] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 is a schematic structural diagram of a housing assembly according to an embodiment of the present application;

[0035] Figure 2 is a cross-sectional view of a housing assembly according to a certain embodiment of the present application;

[0036] Figure 3is a cross-sectional view of a housing assembly according to a certain embodiment of the present application;

[0037] Figure 4 1 is a schematic structural diagram of a second connecting column of a second shell of a shell assembly according to an embodiment of the present application;

[0038] Figure 5 It is a structural schematic diagram of the first connecting member of the shell assembly in an embodiment of the present application.

[0039] Description of the main component symbols: shell assembly 100, first shell 10, first connecting column 11, first lower side wall 12, second shell 20, fixing groove 21, transition surface 211, first transition surface 2111, second transition surface 2112, second connecting column 22, first upper side wall 23, rib structure 24, first rib structure 241, second rib structure 242, third rib structure 243, fourth rib structure 244, connecting assembly 30, second connecting member 31, first connecting member 32, protrusion 321. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections. They can refer to mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediary. They can refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] The disclosure herein provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0044] In the related art, the shell of the energy storage power supply usually includes an upper shell and a lower shell, and the lower shell usually includes a beer nut or a hot-melt nut. The upper shell is connected to the lower shell by bolts in combination with the beer nut or the hot-melt nut. However, on the one hand, since the nut is usually made of metal and the lower shell is usually made of plastic, the thermal expansion coefficients are different, resulting in thermal stress between the lower shell and the nut after cooling. On the other hand, the connection between the nut and the lower shell is the main load-bearing point of the energy storage power supply. Especially for large-capacity energy storage power supplies, the force applied by the battery module of the energy storage power supply to the connection between the nut and the lower shell is very large. Therefore, after a period of use, the lower shell wrapping the nut is prone to cracking, resulting in failure of the shell connection and shortening the service life of the product.

[0045] See also Figure 1 The present application proposes an energy storage power supply, which includes a battery module and a shell assembly 100. The shell assembly 100 includes a first shell 10, a second shell 20 and a connecting assembly 30. A fixing groove 21 is formed on the inner side wall of the second shell 20; the connecting assembly 30 includes a second connecting member 31 and a first connecting member 32. The first connecting member 32 is clamped in the fixing groove 21. The second connecting member 31 passes through the first shell 10 and is fixed in the first connecting member 32, thereby fixedly connecting the first shell 10 and the second shell 20. The battery module is arranged between the first shell 10 and the second shell 20.

[0046] The housing assembly 100 provided herein has a first connector 32 secured within the second housing 20, thereby preventing thermal stress from being generated during the injection molding process. This prevents cracking at the connection between the first connector 32 and the second housing 20, even when used in an energy storage power supply and subjected to the weight of a heavy battery module, thereby extending the product's service life. Furthermore, the removable first connector 32 shortens the injection molding time of the second housing 20, improving product production capacity and efficiency while significantly reducing product costs.

[0047] Specifically, energy storage power sources refer to devices or systems that can store electrical energy and release it when needed. These power sources typically feature large capacity, high efficiency, and recyclability. They are used to provide power during unstable or interrupted power supply, balance grid loads, and optimize energy utilization.

[0048] In the embodiment of the present application, the first shell 10 and the second shell 20 are both integrally injection-molded structures. Furthermore, the first connecting member 32 is assembled to the second shell 20 through the principle of thermal expansion of plastic. With this arrangement, the assembly of the first connecting member 32 can be automated, which can improve production capacity; reduce human installation errors and mistakes, and improve product qualification rate.

[0049] In some embodiments, the first connecting member 32 is a nut, and the second connecting member 31 is a bolt.

[0050] In this way, the nuts and bolts have a simple structure and are easy to use, which helps to reduce the difficulty of assembly. At the same time, the nuts and bolts are standard parts that are low-cost and easy to purchase, which helps to reduce production costs.

[0051] Specifically, in the embodiment of the present application, the first connecting member 32 is a square nut. This configuration can prevent the first connecting member 32 from rotating within the fixing groove 21 when the first connecting member 32 and the second connecting member 31 are locked together. In other embodiments, the first connecting member 32 can also be configured as a hexagonal, octagonal, or other non-circular cross-sectional shape to prevent the first connecting member 32 from rotating within the fixing groove 21.

[0052] See also Figure 1 In some embodiments, the first shell 10 is a lower shell, the second shell 20 is an upper shell, and the second connecting member 31 passes through the bottom of the first shell 10 to connect to the second shell 20.

[0053] In this way, the lower shell serves as the main load-bearing structure. Adopting such a structure is particularly helpful in avoiding damage to the connection caused by thermal stress, thereby ensuring the load-bearing capacity of the lower shell, while also avoiding seeing the installation hole for installing the second connecting member 31.

[0054] Specifically, in the embodiment of the present application, the first shell 10 is the lower shell, the second shell 20 is the upper shell, the battery module is installed on the lower shell, and the lower shell is connected to the first connecting member 32 of the upper shell through the second connecting member 31 to realize the connection between the lower shell and the upper shell.

[0055] In some embodiments, the first shell 10 may be set as an upper shell, and the second shell 20 may be set as a lower shell.

[0056] In some embodiments, the first shell 10 and the second shell 20 may also be configured to be connected left and right, that is, the first shell 10 is the left shell and the second shell 20 is the right shell.

[0057] In some embodiments, the second shell 20 may also be the main shell. The second shell 20 is groove-shaped, and the battery assembly is completely installed in the second shell 20. The first shell 10 is a cover plate covering the opening of the main shell.

[0058] See also Figure 1 and Figure 2 In some embodiments, the first shell 10 and the second shell 20 are frame-shaped, the first shell 10 includes a first connecting column 11, the second shell 20 includes a second connecting column 22 that cooperates with the first connecting column 11, and the fixing groove 21 is arranged on the inner side of the second connecting column 22.

[0059] Thus, since the mechanical stress is relatively concentrated at the second connecting column 22 , adopting such a structure is particularly helpful in avoiding damage to this connection caused by thermal stress, thereby ensuring the load-bearing capacity of the second connecting column 22 .

[0060] Specifically, in the embodiment of the present application, the first shell 10 includes two first connecting columns 11, which are arranged at two adjacent corners of the first shell 10. Further, the two first connecting columns 11 are arranged at two adjacent corners along the length direction of the first shell 10. Correspondingly, the second shell 20 includes two second connecting columns 22, which are arranged in a one-to-one correspondence with the two first connecting columns 11. The inner side of the second connecting column 22 is provided with a fixing groove 21, and the first connecting member 32 is provided in the fixing groove 21. The first connecting column 11 is provided with a second connecting member 31 that cooperates with the first connecting member 32. Further, in the embodiment of the present application, the first connecting column 11 is provided with a first connecting hole, and the second connecting member 31 passes through the first connecting hole and the fixing groove 21 on the corresponding second connecting column 22 to connect with the first connecting member 32.

[0061] See also Figure 3In the embodiment of the present application, the first shell 10 also includes a first lower side wall 12, and the second shell 20 also includes a first upper side wall 23 corresponding to the first lower side wall 12. The first upper side wall 23 is provided with a plurality of fixing grooves 21, and the plurality of fixing grooves 21 are evenly arranged on the edge of the first upper side wall 23 near the first upper side wall. Furthermore, the first upper side wall is provided with a plurality of second connecting members 31 that cooperate with the first connecting member 32. The second connecting members 31 are arranged one by one with the first connecting members 32. A second connecting hole is provided on the first upper side wall. The second connecting member 31 passes through the second connecting hole and the corresponding fixing groove 21 on the first upper side wall 23 to be connected to the first connecting member 32.

[0062] In some embodiments, the first shell 10 may also include four first connecting columns 11, which are respectively arranged at the four corners of the first shell 10. Correspondingly, the second shell 20 may also include four second connecting columns 22, which are respectively arranged at the four corners of the second shell 20.

[0063] In some embodiments, the first shell 10 may also not include the first connecting column 11. In this case, the first shell 10 includes a first lower side wall 12, a second lower side wall, a third lower side wall and a fourth lower side wall. Correspondingly, the second shell 20 includes a first upper side wall 23, a second upper side wall, a third upper side wall and a fourth upper side wall. The first upper side wall 23, the second upper side wall, the third upper side wall and the fourth upper side wall are each provided with a plurality of fixing grooves 21. Preferably, the fixing grooves 21 can be arranged at the connection between the first upper side wall 23, the second upper side wall, the third upper side wall and the fourth upper side wall, that is, on the four side edges of the second shell 20.

[0064] See also Figures 1 to 4 In some embodiments, the fixing groove 21 is configured so that the first connecting member 32 is laterally embedded in the fixing groove 21 .

[0065] In this way, the assembly between the first connecting member 32 and the second housing 20 is facilitated.

[0066] Specifically, in the embodiment of the present application, the first connecting member 32 is laterally embedded in the fixing groove 21 , and a third through hole is provided on the side of the fixing groove 21 close to the first shell 10 . The second connecting member 31 extends into the fixing groove 21 through the third through hole and is connected to the first connecting member 32 .

[0067] Furthermore, the first connector 32 forms an interference fit with the fixing groove 21. When the housing assembly 100 is removed from the injection molding machine, the temperature of the housing assembly 100 is relatively high, the size of the housing assembly 100 is relatively large, and the housing assembly 100 is relatively soft. At this time, the first connector 32 is automatically implanted. Due to the principle of thermal expansion of plastic, the first connector 32 can be easily assembled into the fixing groove 21 of the second housing 20. After the first connector 32 is assembled into the second housing 20, as the cooling time increases, the plastic product shrinks, and the first connector 32 is cold-shrunk onto the second housing 20. This can accelerate the implantation of the first connector 32 into the second housing 20, which is beneficial for improving production capacity.

[0068] See also Figure 4 In some embodiments, a plurality of rib structures 24 are provided in the fixing groove 21 , and the inner wall of the fixing groove 21 and the plurality of rib structures 24 clamp the first connecting member 32 .

[0069] Thus, the fixing grooves 21 and the rib structure 24 provided on the inner surface of the second shell 20 can reduce the material consumption while ensuring the strength. In addition, the thickness of the second shell 20 can be reduced to avoid the generation of injection molding defects.

[0070] Specifically, in the embodiment of the present application, a fixing groove 21 is provided on the inner side of the second connecting column 22 and the inner side of the first lower side of the second housing 20, wherein the inner side of the first lower side is provided with multiple fixing grooves 21. Furthermore, multiple rib structures 24 are provided in the fixing groove 21. The side surfaces of the multiple rib structures 24 and the inner wall of the fixing groove 21 enclose and are used to clamp the first connecting member 32. In other words, the first connecting member 32 is clamped to the second housing 20 through the multiple rib structures 24 and the inner wall of the fixing groove 21.

[0071] In other embodiments, a mounting platform may also be provided on the inner surface of the second shell 20, and the mounting platform is recessed inward to form a fixing groove 21. It should be noted that the mounting platform should not be too large, and the wall thickness of the second shell 20 and the wall thickness of the fixing groove 21 should be fully considered when adapting the facility mounting platform to avoid injection molding defects such as shrinkage holes, which affect the service life of the product.

[0072] See also Figure 4 In some embodiments, the rib structure 24 presses against the side surface of the first connecting member 31 and / or the end surface of the first connecting member 31 away from the first shell 10.

[0073] In this way, the mechanical stress generated by the mutual compression between the second shell 20 and the first connecting member 32 can be absorbed by the rib structure 24, which is beneficial to further avoid cracking caused by stress and improve the service life of the product.

[0074] For details, please refer to Figure 4In the embodiment of the present application, the rib structure 24 includes a first rib structure 241, a second rib structure 242, a third rib structure 243 and a fourth rib structure 244. Since the first connecting member 32 is a four-cornered first connecting member 32 and is laterally embedded in the fixing groove 21, the first rib structure 241 and the second rib structure 242 are arranged opposite to each other, and the end surfaces of the first rib structure 241 and the second rib structure 242 respectively abut against the two opposite side surfaces of the first connecting member 32 to clamp and fix the first connecting member 32. The third rib structure 243 and the fourth rib structure 244 are located at the top of the first connecting member 32 and the end surfaces of the third rib structure 243 and the fourth rib structure 244 are pressed against the end surface of the first connecting member 32 away from the first shell 10, and a space for the second connecting member 31 to extend is formed between the third rib structure 243 and the fourth rib structure 244.

[0075] In some embodiments, multiple pairs of oppositely disposed rib structures 24 may be provided, and the two opposite end surfaces of each pair of rib structures 24 respectively abut against the two opposite side surfaces or two end surfaces of the first connecting member 32 to clamp and fix the first connecting member 32 .

[0076] See also Figure 3 and Figure 4 In some embodiments, the first connecting member 32 is attached to the inner wall surface of the fixing groove 21 at an end surface close to the first shell 10 .

[0077] In this way, the contact area between the first connecting member 32 and the second housing 20 in the direction of force applied can be increased, thereby reducing the concentration of mechanical stress applied by the first connecting member 32 to the second housing 20 .

[0078] Specifically, in the embodiment of the present application, when the second connecting member 31 is locked with the first connecting member 32, the first connecting member 32 will be pulled by the second connecting member 31 to apply pressure to the second shell 20. Therefore, the end face of the first connecting member 32 with a larger area is used to contact the inner wall surface of the fixing groove 21 to maximize the contact area between the first connecting member 32 and the second shell 20 in the force direction. In this way, when the second connecting member 31 locks the first connecting member 32, the stress concentration can be effectively reduced, thereby improving the bearing capacity of the second shell 20, which is beneficial to improving the service life of the product.

[0079] In certain embodiments, in order to further improve the load-bearing capacity of the second housing 20 , the stress concentration may be further reduced by selecting a first connecting member 32 with a larger end surface area.

[0080] In some embodiments, in order to further improve the load-bearing capacity of the second shell 20, a metal gasket can be set between the end face of the first connecting member 32 close to the second connecting member 31 and the inner wall surface of the fixing groove 21. By adding the metal gasket, the contact area is further expanded, thereby further reducing stress concentration.

[0081] See also Figures 3 to 5 In some embodiments, a protrusion 321 is provided on the end surface of the first connecting member 32 away from the second connecting member 31 , and the protrusion 321 presses against the rib structure 24 and is at least partially embedded in the rib structure 24 .

[0082] In this way, the first connecting member 32 can be better fixed in the fixing groove 21 to prevent the first connecting member 32 from sliding.

[0083] Specifically, in the embodiment of the present application, a protrusion 321 is provided on the top surface of the first connecting member 32. The protrusion 321 extends outward from the top surface of the first connecting member 32. The cross-sectional area of ​​the protrusion 321 decreases along the extension direction of the protrusion 321. As can be easily understood, the protrusion 321 is in the shape of a prism or a truncated cone. In some embodiments, the protrusion 321 can also be configured in the shape of a pyramid or a cone.

[0084] In the embodiment of the present application, the third rib structure 243 and the fourth rib structure 244 are located on top of the first connector 32, and the end surfaces of the third rib structure 243 and the fourth rib structure 244 press against the protrusion 321 on the end surface of the first connector 32 away from the first shell 10. Furthermore, because the first connector 32 is assembled to the second shell 20 based on the principle of thermal expansion of plastic, during assembly, the rib structure 24 used to press and secure the end surface of the first connector 32 away from the second connector 31 has not yet fully solidified and is relatively soft. At this time, after the first connector 32 is laterally inserted into the fixing groove 21 and the second shell 20 is fully solidified, due to thermal expansion and contraction, the protrusion 321 will penetrate the interior of the rib structure 24 pressing against the protrusion 321, thereby allowing the first connector 32 to better grip the plastic and prevent the first connector 32 from moving.

[0085] In the embodiment of the present application, four protrusions 321 are provided on the top surface of the first connecting member 32. The four protrusions 321 are respectively located at the four corners of the top surface of the four-corner first connecting member 32. The third rib structure 243 and the fourth rib structure 244 respectively press against the two protrusions 321.

[0086] In other embodiments, other numbers of protrusions 321 may be provided on the top surface of the first connecting member 32 . The specific number of protrusions 321 may be selected according to actual needs and will not be elaborated herein.

[0087] In some embodiments, the protrusion 321 may also be provided on other surfaces of the first connecting member 32 to assist in fixing the first connecting member 32. The specific location of the protrusion 321 may be selected according to actual needs and will not be elaborated herein.

[0088] See also Figure 4In some embodiments, a single second connecting member 31 is matched with at least two fixing grooves 21 , and the at least two fixing grooves 21 are stacked along the axial direction of the second connecting member 31 .

[0089] In this way, if one of the fixing slots 21 is damaged, the other one can be activated, and second connecting members 31 of different lengths can also be adapted.

[0090] Specifically, in the embodiment of the present application, the first connecting column 11 and the second connecting column 22 are the parts of the shell assembly 100 where the load is most concentrated, and they are the most fragile. Therefore, two fixing grooves 21 are stacked on the inner sides of the first connecting column 11 and the second connecting column 22. Both fixing grooves 21 can be used to place the first connecting member 32. When in use, the first connecting member 32 is usually only assembled in the lower fixing groove 21, and the first connecting member 32 is not assembled in the upper fixing groove 21 as a reserve. When the first connecting member 32 placed in the lower fixing groove 21 fails due to stripping or other reasons, a new first connecting member 32 can be assembled in the fixing groove 21 reserved at the upper end, and by replacing and lengthening the second connecting member 31, the upper and lower shells are locked to avoid product failure and scrapping due to the failure of the first connecting member 32, thereby improving the reliability and yield of the product.

[0091] It is easy to understand that in order for the first connecting members 32 in both fixing grooves 21 to be able to lock with the second connecting member 31 in the same position, the two fixing grooves 21 should have the same size and shape, and the two fixing grooves 21 should be aligned. Furthermore, the two fixing grooves 21 should ensure that when the two first connecting members 32 are installed in the fixing grooves 21, the axes of the threaded holes on the two first connecting members 32 are collinear.

[0092] See also Figure 3 In some embodiments, a transition surface 211 is provided at the entrance of the fixing groove 21 to guide the first connecting member 32 .

[0093] In this way, the transition surface 211 can facilitate the installation of the first connecting member 32 .

[0094] Specifically, in the embodiment of the present application, the transition surface 211 is provided at the rib structure 24 near the entrance of the fixing groove 21 and at the inner wall of the fixing groove 21 near the entrance of the fixing groove 21. Furthermore, the transition surface 211 is an inclined surface. In other embodiments, the transition surface 211 can also be provided as a curved surface.

[0095] In some embodiments, the transition surface 211 includes a first transition surface 2111 and a second transition surface 2112, one side of the second transition surface 2112 is connected to the inner wall of the fixing groove 21, and the other side is connected to the first transition surface 2111, and the angle formed by the first transition surface 2111 and the inner wall of the fixing groove 21 is greater than the angle formed by the second transition surface 2112 and the inner wall of the fixing groove 21.

[0096] In this way, the first transition surface 2111 can quickly send the first connecting part 32 to the specified position, and the second transition surface 2112 can gradually make the first connecting part 32 change from a clearance fit to an interference fit, so that the force transition is uniform and the product is not easily damaged.

[0097] Specifically, in the embodiment of the present application, both the first transition surface 2111 and the second transition surface 2112 are inclined surfaces. Both the first transition surface 2111 and the second transition surface 2112 are located on the rib structure 24 near the entrance of the fixing groove 21 and on the inner wall of the fixing groove 21 near the entrance of the fixing groove 21. The first transition surface 2111 is located outside the second transition surface 2112, and the first transition surface 2111 has a greater inclination than the second transition surface 2112. With this arrangement, the first transition surface 2111 can quickly move the first connector 32 to a designated position, while the second transition surface 2112 can gradually transition the first connector 32 from a clearance fit to an interference fit, thereby evenly applying force and preventing damage to the second housing 20, thereby improving product yield.

[0098] In some embodiments, the first transition surface 2111 and / or the second transition surface 2112 may also be set as an arc surface.

[0099] Throughout this specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, for example, two or three, unless otherwise specifically defined.

[0101] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage power supply, comprising a battery module, characterized in that: The energy storage power supply further includes: a first shell; a second shell, wherein a fixing groove is formed on an inner side wall of the second shell; The connecting component includes a first connecting member and a second connecting member, the first connecting member is clamped in the fixing groove, the second connecting member passes through the first shell and is fixed in the first connecting member, thereby fixedly connecting the first shell and the second shell, and the battery module is arranged between the first shell and the second shell.

2. The energy storage power supply according to claim 1, characterized in that: The first connecting member is a nut, and the second connecting member is a bolt.

3. The energy storage power supply according to claim 1, characterized in that: The first shell is a lower shell, the second shell is an upper shell, and the second connecting member passes through the first shell from the bottom of the first shell to connect with the second shell.

4. The energy storage power supply according to claim 1, characterized in that: The first shell and the second shell are frame-shaped. The first shell includes a first connecting column, and the second shell includes a second connecting column that cooperates with the first connecting column. The fixing groove is arranged on the inner side of the second connecting column.

5. The energy storage power supply according to claim 1, characterized in that: The fixing groove is configured so that the first connecting member is laterally embedded in the fixing groove.

6. The energy storage power supply according to claim 1, characterized in that: A plurality of rib structures are provided in the fixing groove, and the inner wall of the fixing groove and the plurality of rib structures clamp the first connecting member.

7. The energy storage power supply according to claim 6, characterized in that: The rib structure presses against a side surface of the first connecting member and / or an end surface of the first connecting member away from the first shell.

8. The energy storage power supply according to claim 6, characterized in that: The end surface of the first connecting member close to the first shell is attached to the inner wall surface of the fixing groove.

9. The energy storage power supply according to claim 6, characterized in that: A protrusion is provided on the end surface of the first connecting member away from the second connecting member. The protrusion presses against the rib structure and is at least partially embedded in the rib structure.

10. The energy storage power supply according to claim 1, characterized in that: A single second connecting member is matched with at least two fixing grooves, and the at least two fixing grooves are stacked along the axial direction of the second connecting member.

11. The energy storage power supply according to claim 10, characterized in that: A transition surface for guiding the first connecting member is provided at the entrance of the fixing groove.

12. The energy storage power supply according to claim 11, characterized in that: The transition surface includes a first transition surface and a second transition surface, one side of the second transition surface is connected to the inner wall of the fixing groove, and the other side is connected to the first transition surface, and the angle formed by the first transition surface and the inner wall of the fixing groove is greater than the angle formed by the second transition surface and the inner wall of the fixing groove.

Images