Battery pack

Abstract

The utility model discloses a battery pack which comprises a battery module, a load-bearing connecting assembly, a handle and a shell, and the load-bearing connecting assembly is connected with the battery module; the handle is connected with the bearing connecting assembly; the shell is connected with the bearing connecting assembly. According to the battery pack provided by the invention, the weight transfer from the battery module to the handle is realized by replacing a shell with the bearing connecting assembly, and the shell is not a bearing main force any more, so that a thickened shell does not need to be used due to consideration of bearing, and the cost of the shell is reduced; in addition, the bearing design does not need to be considered during assembly, assembly can be effectively simplified, the assembly efficiency can be improved, and therefore the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of energy storage devices, and more particularly, to a battery pack. Background Art

[0002] Existing battery packs include a housing, a battery module, and a handle. The battery module is disposed within the housing, and the handle is mounted on the housing. The weight of the battery module is the main weight of the battery pack. When carrying the battery pack by the handle, the weight of the battery module is transmitted to the handle through the housing, so the housing is the main load-bearing component. Therefore, the housing needs to be designed with increased thickness, and the assembly also needs to consider the load-bearing design, resulting in complex assembly processes and high costs. Summary of the Utility Model

[0003] An embodiment of this application provides a battery pack.

[0004] The battery pack according to the embodiment of this application includes:

[0005] A battery module;

[0006] A load-bearing connection component, the load-bearing connection component being connected to the battery module;

[0007] A handle, the handle being connected to the load-bearing connection component; and

[0008] A housing, the housing being connected to the load-bearing connection component.

[0009] For the battery pack provided by this application, the load-bearing connection component is used to replace the housing to achieve the weight transfer from the battery module to the handle. The housing is no longer the main load-bearing component, so there is no need to use a thickened housing due to load-bearing considerations, which is beneficial to reducing the cost of the housing. In addition, there is no need to consider the load-bearing design during assembly, which can effectively simplify the assembly and improve the assembly efficiency, thereby improving the production efficiency.

[0010] In some embodiments, the load-bearing connection component is a sheet metal part.

[0011] In this way, sheet metal parts usually have high tensile strength and compressive strength, which is beneficial to improving the service life of the load-bearing connection component, and the processing efficiency of sheet metal parts is high, which is beneficial to shortening the processing cycle.

[0012] In some embodiments, the load-bearing connection component is made of galvanized sheet.

[0013] In this way, galvanized sheet has relatively high strength and durability, which is beneficial to improving the service life of the load-bearing connection component.

[0014] In some embodiments, the load-bearing connection component includes 4 long strip-shaped connecting pieces, and each connecting piece is fixed at a vertical edge close to the battery module.

[0015] In this way, it is beneficial to distribute the weight of the battery module on the four connectors, reduce the load on a single connector, and is beneficial to improving the service life of the load-bearing connection assembly.

[0016] In some embodiments, the battery module includes a plurality of battery packs stacked in the vertical direction, and the connector includes a plurality of sets of module fasteners, and each set of the module fasteners passes through the connector and is fixed to the corresponding battery pack.

[0017] In this way, each battery pack is connected to the connector through a separate module fastener, which is beneficial to improving the reliability of the load-bearing connection assembly.

[0018] In some embodiments, the connector includes a housing connection ear and a housing fastener, and the housing fastener passes through the housing connection ear and is fixed to the housing.

[0019] In this way, the connector is connected to the housing through the housing connection ear and the housing fastener, which facilitates the disassembly, assembly and maintenance of the housing.

[0020] In some embodiments, a buckle is provided on the housing, and a card slot cooperating with the buckle is provided on the housing connection ear.

[0021] In this way, the housing can be pre-connected to the connector through the cooperation of the buckle and the card slot, thereby making the assembly between the housing and the connector more convenient.

[0022] In some embodiments, the connector further includes a handle connection ear and a handle fastener, and the handle fastener passes through the handle and is fixed to the handle connection ear.

[0023] In this way, the handle is connected to the connector through the handle connection ear and the handle fastener, which facilitates the disassembly, assembly and maintenance of the handle.

[0024] In some embodiments, the connector further includes a body, and the handle connection ear is disposed at an end of the body and is perpendicular to the body.

[0025] In this way, the handle can be disposed at the top of the connector, which is more convenient to use. At the same time, the handle connection ear is perpendicular to the body, which is more convenient for the installation of the handle.

[0026] In some embodiments, the 4 connectors are symmetrically arranged about the midline of the battery module.

[0027] In this way, the symmetrical arrangement of the connectors is beneficial to making the forces on the four connectors more uniform and avoiding damage caused by excessive load on a single connector.

[0028] Additional aspects and advantages of embodiments of the present application will be given in part in the following description, become apparent in part from the following description, or be learned by practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0030] Figure 1 is a schematic internal structure diagram of a battery pack according to an embodiment of the present application;

[0031] Figure 2 is a schematic structure diagram of a battery pack according to an embodiment of the present application;

[0032] Figure 3 is an assembly diagram of a battery module and a load-bearing connection component of a battery pack according to an embodiment of the present application;

[0033] Figure 4 is an assembly diagram of a handle and a load-bearing connection component of a battery pack according to an embodiment of the present application;

[0034] Figure 5 is an assembly diagram of a housing and a load-bearing connection component of a battery pack according to an embodiment of the present application.

[0035] Description of the main component symbols: battery pack 100, battery module 10, battery group 11, battery cell fixing ring 12, load-bearing connection component 20, connecting piece 21, body 211, housing connecting ear 212, card slot 2121, handle connecting ear 213, handle 30, housing 40, top cover 41, avoidance groove 411, bottom cover 42, support portion 421, left side cover 43, right side cover 44, front side cover 45, rear side cover 46, buckle 47, expansion socket 50. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship 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 thus should not be construed as a limitation to the present application. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0037] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0039] The disclosure of the present application provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described herein. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not 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 can realize the application of other processes and / or the use of other materials.

[0040] The existing battery pack includes a housing, a battery module, and a handle. The battery module is disposed within the housing, and the handle is mounted on the housing. The weight of the battery module is the main weight of the battery pack. When carrying the battery pack by the handle, the weight of the battery module is transmitted to the handle through the housing. Therefore, the housing is the main load-bearing component. As a result, the housing needs to adopt a thickened design, and the assembly also needs to consider the load-bearing design, resulting in a complex assembly process and high costs.

[0041] Please refer to Figure 1 , the battery pack 100 according to the embodiment of the present application includes a battery module 10, a load-bearing connection component 20, a handle 30, and a housing 40. The load-bearing connection component 20 is connected to the battery module 10; the handle 30 is connected to the load-bearing connection component 20; the housing 40 is connected to the load-bearing connection component 20.

[0042] The battery pack 100 provided by the present application uses the load-bearing connection component 20 to replace the housing 40 to achieve the weight transfer from the battery module 10 to the handle 30. The housing 40 is no longer the main load-bearing component, so there is no need to use a thickened housing 40 due to load-bearing considerations, which is beneficial to reducing the cost of the housing 40. In addition, there is no need to consider the load-bearing design during assembly, which can effectively simplify the assembly and improve the assembly efficiency, thereby improving the production efficiency.

[0043] Specifically, the battery pack 100 is a device that can store electrical energy and release it when needed. Its main function is to provide a stable and reliable power supply. When the system needs to store electrical energy, the controller will charge the battery pack, and the battery pack will convert the electrical energy into chemical energy for storage. When the system needs to use electrical energy, the controller first converts the DC electrical energy stored in the battery pack into AC electrical energy and then outputs it.

[0044] In the embodiment of the present application, the battery module 10 includes two battery packs 11. The two battery packs 11 are stacked vertically, and both battery packs 11 are connected to the load-bearing connection component 20.

[0045] Further, each battery pack 11 includes a plurality of battery cells, and the plurality of battery cells are arranged in an upright array, that is, the length direction of the battery cells is arranged in the vertical direction to ensure the minimum space occupation.

[0046] In other embodiments, the plurality of battery cells may also be arranged in an array in other directions according to actual needs.

[0047] In other embodiments, the two battery packs 11 may also be placed in other ways according to actual needs.

[0048] In some embodiments, the battery cell has two electrodes, and the two electrodes are respectively arranged on opposite sides of the battery cell. When arrayed, the electrodes are respectively concentrated on both sides of the battery pack 11 to facilitate the connection between the battery cells.

[0049] Further, since the electrodes are respectively concentrated on both sides of the battery pack 11, when the two battery packs 11 are stacked in the vertical direction, an insulating layer needs to be added between the two battery packs 11 to avoid misconnection of the battery cells between the upper and lower battery packs 11, causing problems such as short circuit of the battery pack 11.

[0050] In some embodiments, the battery cell has two electrodes, and both electrodes are arranged on the same side of the battery cell. When arrayed, the electrodes should be concentrated on the same side of the battery pack 11 to facilitate the connection between the battery cells.

[0051] Further, since the electrodes are concentrated on the same side of the battery pack 11, when the two battery packs 11 are stacked in the vertical direction, the electrodes of the two battery packs 11 should be arranged back to back, so that there is no need to install an insulating layer between the two battery packs 11, thereby reducing the production cost and assembly difficulty.

[0052] In some embodiments, the battery pack 11 further includes a battery cell fixing ring 12, and a plurality of battery cells are arranged and fixed inside the battery cell fixing ring 12, so as to facilitate the disassembly, installation and maintenance of the battery pack 11.

[0053] Further, the number of the battery cell fixing rings 12 can be one or more, and the specific number can be selected according to actual needs and is not limited herein.

[0054] Please refer to Figure 2 , in the embodiment of the present application, the housing 40 includes a top cover 41, a bottom cover 42, a left side cover 43, a right side cover 44, a front side cover 45 and a rear side cover 46. The top cover 41, the bottom cover 42, the left side cover 43, the right side cover 44, the front side cover 45 and the rear side cover 46 are all integrally formed by one-piece injection molding, and then are connected by fasteners or other connection means.

[0055] In other embodiments, the housing 40 can also be split into any parts according to actual needs. Each part can be an integral structure formed by integral processing, or can be generated by other processing methods.

[0056] Further, the top cover 41, the bottom cover 42, the left side cover 43, the right side cover 44, the front side cover 45, and the rear side cover 46 enclose to form a receiving cavity. Both the battery module 10 and the load-bearing connection assembly 20 are arranged in the receiving cavity. That is, the top cover 41, the bottom cover 42, the left side cover 43, the right side cover 44, the front side cover 45, and the rear side cover 46 are externally hung on the outside of the battery module 10 through the load-bearing connection assembly 20.

[0057] In some embodiments, one end of the battery module 10 is fixed to the top cover 41, and / or one end of the battery module 10 is fixed to the bottom cover 42.

[0058] It is easy to understand that when there are multiple battery packs 11 inside the housing 40, one end of the battery pack 11 close to the top cover 41 is fixed to the top cover 41, and one end of the battery pack 11 close to the bottom cover 42 is fixed to the bottom cover 42; when there is only one battery pack 11 inside the housing 40, one end of the battery pack 11 is fixed to the top cover 41, and the other end of the battery pack 11 is fixed to the bottom cover 42.

[0059] In other embodiments, one end of the battery module 10 can also be fixed to the left and right side plates or the front and rear side plates, and can be specifically selected according to actual needs, which is not specified here.

[0060] In the embodiment of the present application, a support portion 421 is further provided on the side of the bottom cover 42 away from the battery module 10, and an anti-slip structure is further provided on the support portion 421. Optionally, the anti-slip structure can be an anti-slip silica gel pad, an anti-slip rubber pad, or anti-slip patterns provided on the support portion 421.

[0061] In other embodiments, a fixing groove can also be provided on the side of the bottom cover 42 away from the battery module 10, and a relatively thick anti-slip pad is provided in the fixing groove. The material of the anti-slip pad can be selected according to actual needs, which is not limited here.

[0062] In the embodiment of the present application, the battery pack 100 further includes an expansion socket 50. The expansion socket 50 is a socket device designed to solve the problem of insufficient power socket quantity, and the expansion socket 50 is arranged on the left and right side plates.

[0063] In other embodiments, the expansion socket 50 can also be arranged on at least one of the top cover 41, the bottom cover 42, the left side cover 43, the right side cover 44, the front side cover 45, and the rear side cover 46, and can be specifically arranged according to actual needs, which is not limited here.

[0064] In the embodiments of the present application, the handle 30 is made of metal. Specifically, an aluminum alloy material can be selected, and it is hollow inside, which is beneficial to the lightweight of the battery pack 100. Moreover, the aluminum alloy handle 30 has relatively high strength and durability, which is beneficial to increasing the reliability of the handle 30 and extending the service life of the handle 30.

[0065] Furthermore, two avoidance grooves 411 are formed on the top cover 41. The two avoidance grooves 411 correspond to the left and right side plates respectively, and the handle 30 passes through from the avoidance grooves 411 and is exposed outside the housing 40.

[0066] In other embodiments, the two avoidance grooves 411 can also correspond to the front and rear side plates respectively.

[0067] In other embodiments, the handle 30 can also be made of other materials, which can be specifically set according to actual needs and are not limited herein.

[0068] In other embodiments, the handle 30 can also be set as a flexible handle. The flexible handle has good adaptability and flexibility, and has better comfort and touch.

[0069] In some embodiments, the load-bearing connection component 20 is a sheet metal part.

[0070] In this way, the sheet metal part usually has relatively high tensile strength and compressive strength, which is beneficial to improving the service life of the load-bearing connection component 20. Moreover, the sheet metal part has high processing efficiency, which is beneficial to shortening the processing cycle.

[0071] Specifically, the sheet metal part refers to a metal product processed through specific sheet metal processes. This process mainly targets metal sheets (usually less than 6 mm), including a series of comprehensive cold processing processes such as shearing, punching / cutting / combining, folding, welding, riveting, splicing, and forming. The significant feature of the sheet metal part is that the thickness of the same part remains consistent. The sheet metal part has the characteristics of light weight, high strength, good electrical conductivity (can be used for electromagnetic shielding), low cost, and suitability for large-scale mass production.

[0072] In the embodiments of the present application, the load-bearing connection component 20 is formed by shearing and bending, and the burrs that may appear during the processing are removed, and the sharp corners of the load-bearing connection component 20 are rounded to prevent the load-bearing connection component 20 from hurting the operator's hand during assembly or maintenance.

[0073] In other embodiments, the load-bearing connection component 20 can also be formed by other sheet metal processes, such as one-time stamping. The specific sheet metal process can be selected according to actual needs and is not limited herein.

[0074] In some embodiments, the load-bearing connection component 20 is made of galvanized sheet.

[0075] In this way, the galvanized sheet has relatively high strength and durability, which is beneficial to improving the service life of the load-bearing connection component 20.

[0076] Specifically, a galvanized sheet refers to a steel sheet with a layer of metallic zinc coated on its surface to prevent the steel sheet surface from being corroded and extend its service life.

[0077] In the embodiment of the present application, the load-bearing connection component 20 is made of a galvanized sheet through sheet metal processing. It should be noted that before sheet metal processing of the galvanized sheet, it is necessary to ensure that the surface of the galvanized sheet is clean, free of oil stains, rust, and impurities. These impurities may affect the processing accuracy and product quality. In addition, it is also necessary to check whether the galvanized layer is uniform and free of peeling. An uneven galvanized layer may affect the anti-corrosion performance and appearance of the product.

[0078] When the galvanized sheet is subjected to sheet metal processing, the joint marks generated during the punching process should meet safety requirements (not scratching hands) and part size tolerances, generally not greater than 10% - 20% of the sheet thickness. The depth of the joint marks generated during the bending process should be controlled within 0.3 mm.

[0079] In other embodiments, the load-bearing connection component 20 can also be made of other metal materials through sheet metal processing. The specific metal materials can be selected according to actual needs and are not limited here.

[0080] In other embodiments, the load-bearing connection component 20 can also be made of non-metallic materials with qualified strength. The specific materials can be selected according to actual needs and are not limited here.

[0081] In some embodiments, when the weight of the battery module 10 is 1 kg, the thickness of the load-bearing connection component 20 is 0.8 mm, and / or when the weight of the battery module 10 is 45 kg, the thickness of the load-bearing connection component 20 is 2 mm.

[0082] In this way, the thickness of the load-bearing connection component 20 can be selected according to the weight of the battery module 10, which is beneficial to reducing production costs on the premise of ensuring strength.

[0083] Specifically, the weight of the battery module 10 refers to the total weight of all the battery packs 11. In the embodiment of the present application, the number of the battery packs 11 is two, and the weight of the battery packs 11 should consider the sum of the weights of the two battery packs 11.

[0084] Further, when the weight of the battery module 10 is 1 kg, the thickness of the load-bearing connection component 20 is at least 0.8 mm. When the thickness of the load-bearing connection component 20 is less than 0.8 mm, although the strength can also meet the requirements, it is very easy to increase the processing difficulty and complexity due to the too thin thickness during processing. For example, in the stamping or bending process, thin sheet metal is more likely to be deformed or damaged, thus affecting the accuracy and quality of the product, resulting in too many defective products and an increase in the defective rate.

[0085] Further, when the weight of the battery module 10 is 45 kg, the thickness of the load-bearing connection component 20 is at least 2 mm to ensure that the strength of the sheet metal part can meet the requirements.

[0086] Further, when the weight of the battery module 10 is between 10 and 45 KG, the thickness of the load-bearing connection component 20 can linearly increase between 0.8 and 2 mm as the weight of the battery module 10 increases, so as to minimize the thickness of the load-bearing connection component 20 on the premise of ensuring the load-bearing requirement, thereby saving costs and facilitating the lightweight and miniaturization of the battery pack 100.

[0087] In some embodiments, the load-bearing connection component 20 includes 4 long strip-shaped connecting pieces 21, and each connecting piece 21 is fixed at a vertical edge close to the battery module 10.

[0088] In this way, it is beneficial to distribute the weight of the battery module 10 on the four connecting pieces 21, reduce the load on a single connecting piece 21, and facilitate the improvement of the service life of the load-bearing connection component 20.

[0089] Specifically, in the embodiments of the present application, the load-bearing connection component 20 includes four connecting pieces 21, and the four connecting pieces 21 are all made by processing galvanized sheet metal.

[0090] Multiple battery cells are arranged in a rectangular array so that the battery module 10 is rectangular as a whole. Further, the four connecting pieces 21 are all installed at the vertical edges close to the battery module 10. The load-bearing distribution at the four vertical edges of the battery module 10 is relatively uniform, which is beneficial for the four connecting pieces 21 to be evenly stressed.

[0091] In other embodiments, multiple battery cells can also be arranged in other shaped arrays, and the four connecting pieces 21 are evenly arranged on the periphery of the battery module 10.

[0092] In other embodiments, the number of the connecting pieces 21 of the load-bearing connection component 20 can also be correspondingly set according to the number of the vertical edges of the battery module 10, which is beneficial for the connecting pieces 21 to be evenly stressed.

[0093] In other embodiments, the connecting piece 21 can also be set to other numbers, and multiple connecting pieces 21 are evenly arranged on the periphery of the battery module 10.

[0094] Please refer to Figure 1 and Figure 3 In some embodiments, the battery module 10 includes a plurality of battery packs 11 stacked in the vertical direction. The connecting member 21 includes multiple sets of module fasteners, and each set of module fasteners passes through the connecting member 21 and is fixed to the corresponding battery pack 11.

[0095] In this way, each battery pack 11 is connected to the connecting member 21 through a separate module fastener, which is beneficial to improving the reliability of the load-bearing connection assembly 20.

[0096] Specifically, in the embodiments of the present application, the number of battery packs 11 is two. The connecting member 21 is provided with mounting holes corresponding to the two battery packs 11, and the module fasteners pass through the connecting member 21 through the mounting holes and fasten the connecting member 21 to the battery pack 11.

[0097] Furthermore, a cell fixing ring 12 is also provided on the battery pack 11, and the module fasteners pass through the connecting member 21 through the mounting holes and fasten the connecting member 21 to the cell fixing ring 12.

[0098] Furthermore, to ensure the structural strength of the connecting member 21, the connecting member 21 is provided with one mounting hole corresponding to each battery pack 11, and the mounting holes can be processed together during the sheet metal process of the connecting member 21.

[0099] Optionally, the module fasteners can be screws, bolts, rivets, or other fasteners. In the embodiments of the present application, the module fasteners are screws.

[0100] In other embodiments, the cell fixing ring 12 may not be provided on the battery pack 11, and the module fasteners pass through the connecting member 21 through the mounting holes and fasten the connecting member 21 to other components of the battery module 10.

[0101] In other embodiments, when the structural strength of the connecting member 21 is sufficient, the connecting member 21 may also be provided with one mounting hole corresponding to all the battery packs 11. The mounting hole is a long slot hole, so that multiple module fasteners can be connected to the battery pack 11 through one mounting hole. The mounting holes can be processed together during the sheet metal process of the connecting member 21.

[0102] Please refer to Figure 3 and Figure 4 In some embodiments, the connecting member 21 includes a housing connecting ear 212 and a housing fastener, and the housing fastener passes through the housing connecting ear 212 and is fixed to the housing 40.

[0103] In this way, the connecting member 21 is connected to the housing 40 through the housing connecting ear 212 and the housing fastener, which is convenient for the disassembly, assembly and maintenance of the housing 40.

[0104] Specifically, in the embodiments of the present application, the connecting member 21 includes a plate-shaped body 211 and a housing connecting ear 212 connected to the body 211. The housing connecting ear 212 is formed on the body 211 by bending or stamping processes.

[0105] Furthermore, since there are two battery packs 11 arranged inside the housing 40, the length of the connecting member 21 is relatively long. To make the forces on each part of the connecting member 21 uniform and to avoid large-area suspension of the housing 40, multiple housing connecting ears 212 are provided on each connecting member 21.

[0106] Furthermore, for the convenience of connection between the housing connecting ear 212 and the housing 40, all the housing connecting ears 212 are perpendicular to the body 211.

[0107] In the embodiments of the present application, four housing connecting ears 212 are provided on each connecting member 21. Among them, three housing connecting ears 212 are arranged on the side surface of the body 211 for connecting the left cover 43 and the right cover 44, and one housing connecting ear 212 is arranged at the bottom end of the body 211 for connecting the bottom cover 42.

[0108] In other embodiments, the housing connecting ears 212 located on the side surface of the body 211 can also be used to connect the front cover 45 and the rear cover 46.

[0109] In other embodiments, all the housing connecting ears 212 can be located on the side surface of the body 211 and be used to connect the left cover 43 and the right cover 44 or the front cover 45 and the rear cover 46. The other parts of the housing 40 that are not connected by the housing connecting ears 212 are connected to the parts connected by the housing connecting ears 212 of the housing 40.

[0110] Furthermore, one housing mounting hole is provided on each housing connecting ear 212. The housing fastener passes through the housing connecting ear 212 through the housing mounting hole and is fixed on the housing 40.

[0111] In certain embodiments, the number of the housing connecting ears 212 is multiple, and the multiple housing connecting ears 212 are evenly arranged on the same side of the body 211.

[0112] In certain embodiments, the number of the housing connecting ears 212 is multiple, and the multiple housing connecting ears 212 are evenly arranged on both sides of the body 211.

[0113] In certain embodiments, the number of the housing connecting ears 212 can also be one. Multiple housing mounting holes are provided on one housing connecting ear 212, and multiple housing fasteners respectively pass through the multiple housing mounting holes and pass through the housing connecting ear 212 to be fixed on the housing 40.

[0114] In some embodiments, the number of the housing connection lugs 212 may also be one. A plurality of housing mounting holes are provided on one housing connection lug 212, and a plurality of housing fasteners respectively pass through the housing connection lug 212 through the plurality of housing mounting holes and are fixed on the housing 40.

[0115] In some embodiments, the number of the housing connection lugs 212 is one. One housing mounting hole may also be provided on the housing connection lug 212. The housing mounting hole is a long slot hole. A plurality of housing fasteners pass through the housing connection lug 212 through the same housing mounting hole and are fixed on the housing 40, and multi-point fixation of the connecting member 21 and the housing 40 is achieved.

[0116] Please refer to Figure 5 , in some embodiments, a buckle 47 is provided on the housing 40, and a clamping groove 2121 that cooperates with the buckle 47 is provided on the housing connection lug 212.

[0117] In this way, the housing 40 can be pre-connected to the connecting member through the cooperation of the buckle 47 and the clamping groove 2121, so that the assembly between the housing 40 and the connecting member 21 is more convenient.

[0118] Specifically, buckles 47 are provided on both the left cover 43 and the right cover 44 that are connected to the connecting member 21.

[0119] Further, since both the left cover 43 and the right cover 44 are connected to two connecting members 21, two buckles 47 are respectively provided on the left cover 43 and the right cover 44.

[0120] Further, the two buckles 47 are located in the same horizontal plane and the two buckles 47 are arranged oppositely, so that the pre-connection between the housing 40 and the connecting member 21 is more reliable.

[0121] Please refer to Figure 3 and Figure 4 , in some embodiments, the connecting member 21 further includes a handle connection lug 213 and a handle fastener. The handle fastener passes through the handle 30 and is fixed on the handle connection lug 213.

[0122] In this way, the handle 30 is connected to the connecting member 21 through the handle connection lug 213 and the handle fastener, which is convenient for the disassembly, assembly and maintenance of the handle 30.

[0123] Specifically, in the embodiment of the present application, the connecting member 21 includes a plate-shaped body 211 and a handle connection lug 213 connected to the body 211. The housing connection lug 212 is formed on the body 211 by a bending or stamping process.

[0124] In some embodiments, the connecting member 21 further includes a body 211. The handle connection lug 213 is provided at the end of the body 211 and is perpendicular to the body 211.

[0125] Thus, the handle 30 can be arranged at the top of the connecting member 21, which is more convenient to use. At the same time, the handle connecting ear 213 is perpendicular to the body 211, which is more convenient for the installation of the handle 30.

[0126] In the embodiment of the present application, one handle connecting ear 213 is arranged on each connecting member 21, and the handle connecting ear 213 is arranged at one end of the body 211 far away from the bottom cover 42.

[0127] Furthermore, for the convenience of connection between the handle connecting ear 213 and the handle 30, all the handle connecting ears 213 are perpendicular to the body 211.

[0128] In the embodiment of the present application, each handle 30 is provided with two connection ends, and the two connection ends are respectively connected to the two handle connecting ears 213 of the two connecting members 21 located on the same side.

[0129] In other embodiments, the handle connecting ear 213 can also be arranged at other positions of the body 211, which can be specifically selected according to actual needs and is not limited herein.

[0130] Furthermore, a plurality of handle mounting holes are provided on the handle connecting ear 213, and the handle fasteners pass through the handle mounting holes and are fixed on the handle 30 through the handle connecting ear 213.

[0131] Correspondingly, the handle 30 is provided with the same number of handle fixing holes corresponding to the handle mounting holes, and the handle fixing holes and the handle mounting holes are arranged in one-to-one correspondence. In the embodiment of the present application, the handle fasteners pass through the handle mounting holes and the handle fixing holes to fix the handle 30 on the connecting member 21.

[0132] In some embodiments, the number of the handle connecting ears 213 can also be set to be multiple, and the multiple handle connecting ears 213 are evenly arranged at the same end of the body 211.

[0133] In some embodiments, the number of the handle connecting ears 213 is one, and one handle mounting hole can also be arranged on the handle connecting ear 213. The handle mounting hole is a long slot hole, and a plurality of handle fasteners pass through the same handle mounting hole and are fixed on the handle 30 through the handle connecting ear 213, and multi-point fixing of the connecting member 21 and the handle 30 is realized.

[0134] Please refer to Figure 3 , in some embodiments, the 4 connecting members 21 are symmetrically arranged about the midline of the battery module 10.

[0135] Thus, the symmetrical arrangement of the connecting members 21 is beneficial to make the forces on the four connecting members 21 more uniform and avoid damage caused by excessive load on a single connecting member 21.

[0136] Specifically, in the embodiments of the present application, the four connectors 21 are respectively arranged in pairs on both sides of the battery module 10 close to the left and right side plates. The two connectors 21 on the same side are arranged at intervals, and the two connectors 21 on the same side are symmetrically arranged about the midline of the plane where they are located. The two connectors 21 on the same side are respectively close to two vertical edges on the same side of the battery module 10. The four connectors 21 are symmetric about the vertical midline of the battery module 10.

[0137] In other embodiments, the four connectors 21 are respectively arranged in pairs on both sides of the battery module 10 close to the front and rear side plates. The two connectors 21 on the same side are arranged at intervals, and the two connectors 21 on the same side are symmetrically arranged about the midline of the plane where they are located. The two connectors 21 on the same side are respectively close to two vertical edges on the same side of the battery module 10.

[0138] In other embodiments, the four connectors 21 can also be respectively arranged at the midlines of the four sides of the battery module 10.

[0139] In certain embodiments, the thickness of the housing 40 is less than 3 mm.

[0140] In this way, reducing the thickness of the housing 40 to less than 3 mm is beneficial to reducing the material cost and production cost of the housing 40.

[0141] Specifically, in this embodiment, since the housing 40 is externally hung on the outside of the battery module 10 through the load-bearing connection assembly 20 and does not play a major load-bearing role, the thickness of the housing 40 can be greatly reduced to less than 3 mm, and specifically, it can be selected according to actual needs.

[0142] To ensure the strength of the housing 40 while reducing its thickness, a reinforcing rib structure can also be arranged inside the housing 40, and the reinforcing rib structure can be arranged in a honeycomb shape or a grid shape.

[0143] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0144] Furthermore, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of the said features. In the description of the present application, "a plurality of" means at least two, such as two, three, unless otherwise specifically defined.

[0145] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that, Comprising: A battery module; A load-bearing connection component, which is connected to the battery module; A handle, which is connected to the load-bearing connection component; And A housing, which is connected to the load-bearing connection component.

2. The battery pack according to claim 1, characterized in that, The load-bearing connection component is a sheet metal part.

3. The battery pack according to claim 1, characterized in that, The load-bearing connection component is made of galvanized sheet.

4. The battery pack according to claim 1, characterized in that, The load-bearing connection component includes 4 strip-shaped connectors, and each connector is fixed at a vertical edge close to the battery module.

5. The battery pack according to claim 4, characterized in that, The battery module includes a plurality of battery packs stacked in the vertical direction, and the connector includes multiple groups of module fasteners, and each group of module fasteners passes through the connector and is fixed on the corresponding battery pack.

6. The battery pack according to claim 4, characterized in that, The connector includes a housing connection ear and a housing fastener, and the housing fastener passes through the housing connection ear and is fixed on the housing.

7. The battery pack according to claim 6, characterized in that, A buckle is provided on the housing, and a card slot matching with the buckle is provided on the housing connection ear.

8. The battery pack according to claim 4, characterized in that, The connector further includes a handle connection ear and a handle fastener, and the handle fastener passes through the handle and is fixed on the handle connection ear.

9. The battery pack according to claim 8, characterized in that, The connector further includes a body, and the handle connection ear is arranged at the end of the body and is perpendicular to the body.

10. The battery pack according to claim 4, characterized in that, The 4 connectors are symmetrically arranged about the midline of the battery module.

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