Battery assembly, battery device and energy storage device
By setting up connecting structures between battery modules for splicing, the problems of loose battery assembly and low cell ratio are solved, achieving efficient space utilization and improved energy density of battery modules.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BYD CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-07-14
Smart Images
Figure CN224502239U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of energy storage technology, specifically relating to a battery module, a battery device, and an energy storage device. Background Technology
[0002] With the continuous development of the new energy industry, the energy density of battery devices will directly affect the performance of energy storage products.
[0003] In the prior art, a large space needs to be reserved between adjacent battery modules in the battery device during assembly to ensure the feasibility of battery module assembly.
[0004] However, the aforementioned reserved space and end plate thickness reduce the space occupied by the cell in the entire PACK and system, affecting the energy density of the battery device. Utility Model Content
[0005] The purpose of this application is to provide a battery module, battery device, and energy storage device that can solve the problems of loose battery module assembly and low cell ratio in the prior art.
[0006] To solve the above-mentioned technical problems, this application is implemented as follows:
[0007] In a first aspect, embodiments of this application provide a battery assembly, comprising: a battery module, the battery module including at least one battery cell; and a connection structure, wherein at least one end of the battery module is provided with the connection structure along a first direction, so that adjacent battery modules are connected through the connection structure.
[0008] In this embodiment, the connection structure enables splicing between two adjacent battery modules. Specifically, it can be a horizontal splicing in the horizontal direction or a vertical stacking splicing. This splicing scheme can reduce or even eliminate the gap between adjacent battery modules, thus increasing the proportion of battery cells in the battery module and improving the space utilization of the energy storage device.
[0009] Furthermore, it also allows energy storage devices of different sizes to be spliced and connected using the battery module structure described in this application.
[0010] Optionally, in this embodiment, the battery module includes an end plate, two end plates being disposed opposite each other along the first direction to constrain a plurality of battery cells; and a connection structure, the connection structure being connected to the side of the end plate away from the battery cells, the connection structure including a body and a mating member, the mating member being disposed on the side of the body away from the battery cells, the mating member being used for detachable connection with another battery module.
[0011] Optionally, in this embodiment of the application, the battery modules adjacent to each other along the first direction are connected by the connection structure.
[0012] Optionally, in an embodiment of this application, the mating parts of one battery module are detachably connected to the mating parts of another battery module along the first direction.
[0013] Optionally, in an embodiment of this application, the mating member penetrates the body along a second direction; wherein the first direction and the second direction are perpendicular.
[0014] Optionally, in the embodiments of this application, the mating element is either a groove or a protrusion, and the groove and the protrusion are adapted to each other.
[0015] Optionally, in this embodiment of the application, along the first direction, the groove is recessed towards the end plate, and the protrusion protrudes away from the end plate.
[0016] Optionally, in this embodiment, the body has a mounting groove and a mounting hole. The mounting groove is located at one end of the body along the second direction, and the mounting hole is located within the mounting groove. The mounting hole is used for detachable connection with a locking member.
[0017] Optionally, in this embodiment, the mounting groove is connected to the recess, or the mounting groove is connected to the protrusion, and the mounting groove is used to provide mounting space for the locking member.
[0018] Optionally, in this embodiment of the application, the connection structure further includes a locking member, which is disposed in the mounting groove along the second direction and is detachably connected to the body through the mounting hole.
[0019] Optionally, in an embodiment of this application, the locking member includes a body and a fastener, the body and the mounting groove are snapped together, and the fastener passes through the body and is detachably connected to the mounting hole.
[0020] Optionally, in this embodiment of the application, the main body is further provided with a lifting eye hole for hoisting the battery assembly.
[0021] Optionally, in this embodiment of the application, the number of the connecting structures is multiple, and the multiple connecting structures are spaced apart along the length direction of the end plate.
[0022] Secondly, embodiments of this application disclose a battery device, including: a plurality of battery components as described above.
[0023] Optionally, in embodiments of this application, a plurality of battery components are detachably connected along the first direction via the connection structure; and / or, the plurality of battery components are stacked along the second direction.
[0024] Optionally, in an embodiment of this application, in two adjacent battery assemblies along the first direction, the groove of one battery assembly and the protrusion of the other battery assembly are detachably connected.
[0025] Optionally, in this embodiment of the application, along the second direction, the locking member may cover two bodies of two adjacent battery assemblies and be detachably connected to two adjacent battery assemblies.
[0026] Optionally, in an embodiment of this application, in two adjacent battery assemblies along the second direction, the connection structure of one battery assembly is stacked on top of the connection structure of the other battery assembly.
[0027] Thirdly, an energy storage device is also disclosed in the embodiments of this application, including the battery device as described above. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the battery assembly structure in an embodiment of this application;
[0029] Figure 2 This is an exploded structural diagram of the battery assembly in an embodiment of this application;
[0030] Figure 3 This is a schematic diagram of the connection structure and end plate in an embodiment of this application;
[0031] Figure 4 This is a top view of a connection structure according to an embodiment of this application;
[0032] Figure 5 This is a top view of another connection structure in an embodiment of this application;
[0033] Figure 6 This is a schematic diagram of the stacked connection structures in the embodiments of this application;
[0034] Figure 7 This is a schematic diagram of the locking component in an embodiment of this application;
[0035] Figure 8 This is a schematic diagram of the connection structure of the battery module along the first direction in an embodiment of this application;
[0036] Figure 9 This is a schematic diagram of the connection structure of the battery module along the first and second directions in an embodiment of this application.
[0037] Explanation of reference numerals in the attached figures:
[0038] 1. Battery assembly; 10. Battery cell; 11. Battery module; 20. End plate; 30. Connection structure; 31. Body; 311. Mounting groove; 312. Mounting hole; 32. Mating part; 321. Groove; 322. Protrusion; 33. Locking part; 331. Main body; 3311. Lifting eye hole; 332. Fastener; X, First direction; Y, Second direction. Detailed Implementation
[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0040] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0041] The battery components, battery devices, and energy storage devices provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.
[0042] See Figures 1 to 9 The embodiments of this application provide a battery assembly 1, including: a battery module 11, the battery module 11 including at least one battery cell 10; and a connection structure 30, wherein at least one end of the battery module 11 is provided with the connection structure 30 along a first direction X, so that adjacent battery modules 11 are connected to each other through the connection structure 30.
[0043] In this embodiment, the connection structure 30 enables splicing connections between two adjacent battery modules 11. Specifically, it can be a horizontal splicing in the horizontal direction or a vertical stacking splicing. Such a splicing scheme can reduce or even eliminate the gap between adjacent battery modules 11, which has the beneficial effect of increasing the proportion of battery cells in the battery assembly and improving the space utilization of the energy storage device.
[0044] Furthermore, it also allows energy storage devices of different sizes to be spliced and connected using the structure of the battery module 11 in this application.
[0045] Optionally, in this embodiment of the application, adjacent battery modules 11 along the first direction X are connected by a connection structure 30.
[0046] In this embodiment, by providing the connection structure 30, two adjacent battery modules 11 along the first direction X can be connected. Furthermore, due to the connection structure 30, the gap between two adjacent battery modules 11 along the first direction X can be reduced, thereby saving space within the battery assembly 1 along the first direction X and increasing the proportion of battery cells 10 in the battery assembly 1 along the first direction X.
[0047] Optionally, in this embodiment, the battery module 11 includes an end plate 20, and two end plates 20 are disposed opposite each other along a first direction X to constrain at least one battery cell 10; a connection structure 30 is connected to the side of the end plate 20 away from the battery cell 10, and the connection structure 30 includes a body 31 and a mating member 32, the mating member 32 is disposed on the side of the body 31 away from the battery cell 10, and the mating member 32 is used to detachably connect with another battery module 11.
[0048] In this embodiment, the battery module 11 includes at least one battery cell 10, arranged in an array, with the large surfaces (the surfaces with the largest surface area among the battery cell 10) of two adjacent battery cells 10 arranged adjacently along the first direction X. The battery module 11 also includes end plates 20, with two end plates 20 arranged opposite each other along the first direction X to constrain multiple battery cells 10. The battery may also include several bottom beams and several tie rods, which, together with the end plates 20, provide support and constraint for the multiple battery cells 10, thereby improving the overall assembly feasibility of the battery module 11.
[0049] Furthermore, the battery assembly 1 also includes a connecting structure 30, which is disposed on the side of the end plate 20 facing away from the cell 10. The connecting structure 30 is used to enhance the constraint strength of the end plate 20, effectively preventing deformation of the end plate 20 caused by the expansion force generated when the cell 10 expands in practical applications. At the same time, due to the connection structure 30, the thickness of the end plate 20 can be reduced, thereby increasing the proportion of the cell 10 in the battery assembly 1 and improving the energy density of the battery device.
[0050] Furthermore, the connection structure 30 includes a body 31 and a mating member 32. The mating member 32 is disposed on the side of the body 31 away from the cell 10. In practical applications, the mating member 32 in one battery module 11 can be detachably connected to the mating member 32 in another battery module 11. It is understood that the arrangement of the mating member 32 can effectively realize the lateral splicing between battery modules 11. Such a battery assembly 1 can improve the space utilization of the energy storage device while enabling energy storage devices of different sizes to use the structure of the battery module 11 in this application.
[0051] In this embodiment, by setting the connection structure 30, the thickness of the end plate 20 can be reduced while preventing the deformation of the end plate 20. At the same time, the setting of the mating part 32 can horizontally connect multiple battery modules 11, which has the beneficial effect of increasing the space ratio of the cell 10 in the battery module 11, thereby increasing the energy density of the battery module 11.
[0052] It should be noted that the mating part 32 can be a mating structure of groove 321 and protrusion 322, or it can be a snap-fit mating structure. This embodiment does not limit it in any way.
[0053] Optionally, in this embodiment, the mating part 32 of one battery module 11 is detachably connected to the mating part 32 of another battery module 11 along the first direction X.
[0054] In this embodiment, the mating member 32 is provided to connect two adjacent battery modules 11 along the first direction X. In practical applications, the mating member 32 of one battery module 11 cooperates with the mating member 32 of another adjacent battery module 11 along the horizontal direction (i.e., the first direction X) to achieve a detachable connection between the two battery modules 11. This has the beneficial effect of facilitating the assembly of the battery modules 11.
[0055] Optionally, in this embodiment, the mating member 32 penetrates the body 31 along the second direction Y; wherein the first direction X and the second direction Y are perpendicular.
[0056] In this embodiment, the second direction Y can be the height direction of the battery cell 10, and also the stacking direction of multiple battery modules 11. The mating member 32, which penetrates the body 31 along the second direction Y, is used to achieve a detachable connection between two adjacent battery modules 11. Specifically, two adjacent battery modules 11 can be joined together by mating members 32 on the connecting structure 30 from top to bottom along the second direction Y. When the mating member 32 penetrates the body 31, the connection area between the two battery modules 11 can be effectively increased, which has the beneficial effect of improving the connection reliability between the two battery modules 11.
[0057] Meanwhile, when two adjacent battery modules 11 are horizontally connected, the expansion of the cell 10 in one battery module 11 is conducted through the connecting structure 30 to the end plate 20 of the other interconnected battery module 11. In this way, the expansion between the two battery modules 11 can change the force on the connecting structure 30 from the original unilateral force to the clamping force on both sides, which has the beneficial effect of further improving the structural strength of the battery module 11.
[0058] Optionally, in the embodiments of this application, the mating part 32 includes a groove 321 or a protrusion 322, one of which is a groove 321 and the other is a protrusion 322, and the groove 321 and the protrusion 322 are adapted to each other.
[0059] In the embodiments of this application, one of the first mating member 32 and the second mating member 32 is a groove 321 and the other is a protrusion 322. The groove 321 and the protrusion 322 can be connected to each other. The mutually mating groove 321 and the protrusion 322 have the beneficial effect of realizing a detachable connection between adjacent battery components along the first direction X.
[0060] Specifically, one or more connection structures 30 can be provided on one end plate 20 of a battery module 11. The mating parts 32 on the connection structures 30 on the same end plate 20 can all be set as protrusions 322 or as grooves 321. In the case of multiple connection structures 30, the mating parts 32 in different connection structures 30 can be set as grooves 321 and protrusions 322. This embodiment does not limit this in any way.
[0061] Furthermore, on the two end plates 20 of a battery module 11, the mating parts 32 in the connecting structures 30 on different end plates 20 can all be set as grooves 321, or they can all be set as protrusions 322. Alternatively, the mating parts 32 in the connecting structures 30 on one end plate 20 can be set as grooves 321, and the mating parts 32 in the other connecting structure 30 can be set as protrusions 322. This embodiment does not impose any limitations on this.
[0062] Furthermore, in the connection structure 30 connecting two adjacent battery modules 11, one of the mating parts 32 is a protrusion 322 and the other is a groove 321, so as to realize the detachable connection between the two adjacent battery modules 11.
[0063] Optionally, in this embodiment of the application, along the first direction X, the groove 321 is recessed towards the end plate 20, and the protrusion 322 protrudes away from the end plate 20.
[0064] In this embodiment, the groove 321 is recessed towards the end plate 20. It is understood that the protrusion 322, which matches the groove 321, will protrude away from the end plate 20. When the groove 321 and protrusion 322 are connected, the protrusion 322 will press against the end plate 20 along the recessed direction of the groove 321, which has the beneficial effect of further applying force to the battery cell 10 within the end plate 20 to prevent the battery cell 10 from expanding and deforming.
[0065] Optionally, in this embodiment, the body 31 has a mounting groove 311 and a mounting hole 312. The mounting groove 311 is located at one end of the body 31 along the second direction Y, and the mounting hole 312 is located in the mounting groove 311. The mounting hole 312 is used to detachably connect with the locking member 33.
[0066] In this embodiment, the mounting groove 311 provides space for the locking member 33. In practical applications, the locking member 33 can further secure the body 31. Simultaneously, the locking member 33 can be recessed into the mounting groove 311, without interfering with the battery module 11 positioned vertically along the second direction Y, thus enabling the vertical stacking of the battery module 11. Furthermore, a mounting hole 312 is also provided within the mounting groove 311. The mounting hole 312 can be detachably connected to the locking member 33. When the locking member 33 is recessed into the mounting groove 311 and connected to the mounting hole 312, the locking member 33 and the body 31 work together to enhance the constraint on the battery cell 10, effectively preventing the battery cell 10 from expanding and deforming during use.
[0067] Optionally, in this embodiment, the mounting groove 311 is connected to the recess 321, or the mounting groove 311 is connected to the protrusion 322. The mounting groove 311 is used to provide mounting space for the locking member 33.
[0068] In this embodiment, when the mating part 32 on the body 31 is a groove 321, the mounting groove 311 and the groove 321 are connected; when the mating part 32 on the body 31 is a protrusion 322, the mounting groove 311 and the protrusion 322 are connected. This configuration allows for effective lateral splicing between two battery modules 11 when connected horizontally, through top-to-bottom splicing of their respective bodies 31. This avoids the need for additional connecting parts and has the beneficial effect of increasing the proportion of battery cells 20 within the battery module 11.
[0069] It should be noted that groove 321 can be a dovetail groove.
[0070] Optionally, in this embodiment of the application, the connection structure 30 further includes a locking member 33, which is disposed in the mounting groove 311 along the second direction Y and is detachably connected to the body 31 through the mounting hole 312.
[0071] In this embodiment, the locking member 33 serves two purposes: firstly, to enhance the strength of the body 31, and secondly, to enable the stacking of battery modules 11 arranged along the second direction Y. Specifically, the locking member 33 is recessed into the mounting groove 311 and detachably connected to the body 31 through the mounting hole 312. In practical applications, the fastener 332 in the lower battery module 11 is fixedly connected to the body 31, and the upper battery module 11 can press against the lower fastener 332 to form a stacking effect. Theoretically, it is possible to achieve an unlimited stacking effect of battery modules 11 in the second direction Y.
[0072] Furthermore, the detachable connection between the locking element 33 and the body 31 facilitates the repair or replacement of either the body 31 or the locking element 33, which has the beneficial effect of reducing costs.
[0073] Optionally, in this embodiment, the locking member 33 includes a body 331 and a fastener 332. The body 331 is snapped into the mounting groove 311, and the fastener 332 passes through the body 331 and is detachably connected to the mounting hole 312. In this embodiment, the fastener 332 is used to achieve the connection between the body 331 and the main body 31. It should be noted that the fastener 332 can be a bolt structure, and there can be multiple fasteners 332. The one-to-one connection between multiple fasteners 332 and the mounting hole 312 has the beneficial effect of achieving a detachable connection between the body 331 and the main body 31.
[0074] For example, such as Figure 7 As shown, the number of fasteners 332 can be 4 bolts. Using 4 M10 bolts, a yield strength of 1280MPa can be provided, which can complete the hoisting of two battery modules 1 weighing less than 600Kg.
[0075] Optionally, in this embodiment of the application, the main body 331 is also provided with a lifting eye hole 3311, which is used to lift the battery assembly 1.
[0076] In this embodiment, the lifting eye hole 3311 is provided for installing a lifting eye. The cooperation between the lifting eye and the lifting eye hole 3311 has the beneficial effect of completing the hoisting work of the battery assembly 1 after overall splicing.
[0077] It should be noted that the eyelet hole 3311 can be a threaded hole or other assembly hole that can be fixedly connected to the eyelet. This embodiment does not limit it in any way.
[0078] Optionally, in this embodiment of the application, there are multiple connecting structures 30, and the multiple connecting structures 30 are spaced apart along the length direction of the end plate 20.
[0079] In this embodiment, to improve the structural strength of the end plate 20 and prevent uneven stress distribution on the end plate 20 when the battery cell 10 expands, the battery module 11 contains multiple connecting structures 30. The number of connecting structures 30 increases with the length of the end plate 20. These multiple connecting structures 30 are spaced apart along the length of the end plate 20 to effectively prevent deformation of the end plate 20 caused by the expansion force generated by the battery cells 10 at different locations during expansion. Specifically, the multiple connecting structures 30 can be evenly spaced along the length of the end plate 20, or they can be non-uniformly spaced along the length of the end plate 20. The specific arrangement depends on the distribution of the battery cells 10 within the battery module 11, and this embodiment does not impose any limitations on this.
[0080] Furthermore, several bottom beams and tie rods connect the reinforcing members at the end plates 20 on both sides of the battery module 11. The tie rods and bottom beams provide tension for the entire module, while the length of the tie rods and bottom beams determines the length of the module. This can be flexibly adjusted according to the number of battery cells 10 installed inside and the size of the battery cells 10. At the same time, the number of locking parts 33 and the length of the end plates 20 can be adjusted according to the length of the battery cells 10. The resulting battery module 11 can adapt to any battery pack and the size of the battery cells 10, while improving the volume utilization rate of the battery cells 10. The interconnected modules only require the replacement of the reinforcing members.
[0081] Optionally, embodiments of this application disclose a battery device, including: a plurality of battery components 1 as described above.
[0082] In this embodiment, the battery device may include multiple battery components 1, which may be connected along the first direction X or the second direction Y as appropriate. This embodiment does not impose any limitations on this.
[0083] Optionally, in this embodiment of the application, multiple battery components 1 are detachably connected along a first direction X via a connection structure 30; and / or, multiple battery components 1 are stacked along a second direction Y.
[0084] In this embodiment, the battery components 1 in the battery device can be interconnected horizontally via the connecting structure 30. The battery components 1 can also be stacked along the second direction Y, where adjacent battery components 1 along the second direction Y are pressed together by the body 31 onto the fastener 332 of the lower battery component 1 to form a stacking effect. In this embodiment, the connection between adjacent battery components 1 via the connecting structure 30 enhances the structural strength of the end plate 20, preventing deformation of the battery component 1 due to cell expansion. Furthermore, it reduces the spacing between adjacent battery components 1, saving space within the battery device and increasing the proportion of space occupied by the cell 10 within the battery component 1, thereby improving the energy density of the battery component 1.
[0085] Optionally, in an embodiment of this application, in two adjacent battery components 1 along the first direction X, the groove 321 of one battery component 1 and the protrusion 322 of the other battery component 1 are detachably connected.
[0086] In this embodiment, the groove 321 and the protrusion 322 correspond to each other. By splicing the body 31 with the groove 321 and the protrusion 322 from top to bottom, the horizontal splicing between battery components 1 can be effectively realized, that is, splicing along the first direction X. Such battery components 1 can improve the utilization rate of battery devices and also make battery devices of different sizes universally compatible with this set of battery components 1, which has the beneficial effect of facilitating battery device PACK.
[0087] Optionally, in this embodiment of the application, along the second direction Y, the locking member 33 may cover the two bodies 31 of two adjacent battery assemblies 1 and be detachably connected to the two bodies 31 of the two adjacent battery assemblies 1.
[0088] In this embodiment, the locking member 33 can simultaneously cover two bodies 31 interconnected by a groove 321 and a protrusion 322. Furthermore, the locking member 33 is also fixedly connected to each body 31. It can be understood that the locking member 33 can perform a secondary connection between the two bodies 31 interconnected by the groove 321 and the protrusion 322, which has the beneficial effect of further enhancing the connection reliability between the two battery assemblies 1.
[0089] Furthermore, when the battery assembly 1 is arranged in parallel horizontally, the expansion of the cell 10 is transmitted to the end plate 20 of the parallel module through the connecting structure 30. In this way, the expansion between the two battery assemblies 1 can change the force on the fixing block from the original unilateral force to the clamping force on both sides, which further improves the structural strength of the battery assembly 1, thereby improving the structural strength of the battery device. This has the beneficial effect of avoiding battery device failure caused by the expansion and deformation of the cell 10.
[0090] Optionally, in the embodiments of this application, in two adjacent battery components 1 along the second direction Y, the connection structure 30 of one battery component 1 is stacked on the connection structure 30 of the other battery component 1.
[0091] In this embodiment, after the locking member 33 and the body 31 are fixedly connected, the battery assembly 1 is assembled, lifted, aligned with the groove 321, and then placed to complete the splicing between the battery assemblies 1. The connection structure 30 is designed to enhance the strength of the body 31 and to enable the stacking of battery assemblies 1 arranged along the second direction Y. Specifically, the locking member 33 in the connection structure 30 is recessed into the mounting groove 311 and is detachably connected to the body 31 through the mounting hole 312. In practical applications, the fastener 332 in the lower battery assembly 1 is fixedly connected to the body 31, and the upper battery assembly 1 can press on the lower fastener 332 to form a stacking effect. Theoretically, the stacking of battery assemblies 1 in the second direction Y can be unlimited. When the battery assemblies 1 are stacked vertically along the second direction Y, the connection structures 30 in the battery assembly 1 are also stacked on top of each other, which has the beneficial effect of further enhancing the structural strength of the battery device between the connection structures 30.
[0092] Optionally, in this application embodiment, an energy storage device is also disclosed, including the battery device as described above.
[0093] In this embodiment, the energy storage device includes the battery device as described above, and also includes the technical features and beneficial effects of the battery device, which will not be repeated here.
[0094] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0095] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A battery assembly (1), characterized in that, include: Battery module (11), the battery module (11) includes at least one battery cell (10). A connection structure (30) is provided at least one end of the battery module (11) along the first direction (X) so that adjacent battery modules (11) can be connected through the connection structure (30).
2. The battery assembly (1) according to claim 1, characterized in that, The battery modules (11) adjacent to each other along the first direction (X) are connected by the connection structure (30).
3. The battery assembly (1) according to claim 1 or 2, characterized in that, The battery module (11) further includes end plates (20), two of the end plates (20) being disposed opposite each other along the first direction (X) to constrain at least one of the battery cells (10). The connection structure (30) is connected to the side of the end plate (20) away from the cell (10). The connection structure (30) includes a body (31) and a mating part (32). The mating part (32) is disposed on the side of the body (31) away from the cell (10). The mating part (32) is used to detachably connect to another battery module (11).
4. The battery assembly (1) according to claim 3, characterized in that, A mating part (32) of one of the battery modules (11) is detachably connected to a mating part (32) of another battery module (11) along the first direction (X).
5. The battery assembly (1) according to claim 4, characterized in that, The mating part (32) penetrates the body (31) along the second direction (Y); Wherein, the first direction (X) and the second direction (Y) are perpendicular.
6. The battery assembly (1) according to claim 4, characterized in that, The mating part (32) is either a groove (321) or a protrusion (322), and the groove (321) and the protrusion (322) are adapted to each other.
7. The battery assembly (1) according to claim 6, characterized in that, Along the first direction (X), the groove (321) is recessed toward the end plate (20), and the protrusion (322) protrudes away from the end plate (20).
8. The battery assembly (1) according to claim 6, characterized in that, The body (31) has a mounting groove (311) and a mounting hole (312). The mounting groove (311) is located at one end of the body (31) along the second direction (Y). The mounting hole (312) is located in the mounting groove (311) and is used to detachably connect with the locking member (33).
9. The battery assembly (1) according to claim 8, characterized in that, The mounting groove (311) is connected to the recess (321), or the mounting groove (311) is connected to the protrusion (322), and the mounting groove (311) is used to provide mounting space for the locking member (33).
10. The battery assembly (1) according to claim 9, characterized in that, The connection structure (30) also includes a locking member (33), which is disposed in the mounting groove (311) along the second direction (Y) and is detachably connected to the body (31) through the mounting hole (312).
11. The battery assembly (1) according to claim 10, characterized in that, The locking member (33) includes a body (331) and a fastener (332). The body (331) is engaged with the mounting groove (311), and the fastener (332) passes through the body (331) and is detachably connected to the mounting hole (312).
12. The battery assembly (1) according to claim 11, characterized in that, The main body (331) is also provided with a lifting eye hole (3311), which is used to lift the battery assembly (1).
13. The battery assembly (1) according to claim 12, characterized in that, The number of the connecting structures (30) is multiple, and the multiple connecting structures (30) are spaced apart along the length direction of the end plate (20).
14. A battery device, characterized in that, include: Multiple battery components (1) as described in claim 13.
15. The battery device according to claim 14, characterized in that, The plurality of battery assemblies (1) are detachably connected along the first direction (X) via the connection structure (30); and / or, The plurality of battery components (1) are stacked along the second direction (Y).
16. The battery device according to claim 15, characterized in that, In two adjacent battery assemblies (1) along the first direction (X), the groove (321) of one battery assembly (1) and the protrusion (322) of the other battery assembly (1) are detachably connected.
17. The battery device according to claim 16, characterized in that, Along the second direction (Y), the locking member (33) can cover the two bodies (31) of two adjacent battery assemblies (1) and is detachably connected to the two bodies (31) of two adjacent battery assemblies (1).
18. The battery device according to claim 17, characterized in that, In two adjacent battery assemblies (1) along the second direction (Y), the connection structure (30) of one battery assembly (1) is stacked on the connection structure (30) of the other battery assembly (1).
19. An energy storage device, characterized in that, Includes the battery device as described in claim 18.