Battery assembly and electric device

Abstract

A battery assembly and an electric device. The battery assembly comprises a bracket assembly, a battery module, and a connecting piece assembly. The bracket assembly comprises brackets, at least two brackets are arranged in a first direction, and each bracket is provided with at least two limiting holes spaced apart in the first direction. The battery module comprises battery cells, and a plurality of battery cells are arranged in the first direction and are fixed relative to each other. Each battery cell comprises a casing and a terminal post, and at least one terminal post is located at one end of the casing in a second direction and protrudes from the casing. Each terminal post is inserted into the corresponding limiting hole, and each bracket is connected to the corresponding casing. The connecting piece assembly comprises connecting pieces, at least two connecting pieces are arranged in the first direction, the connecting pieces are connected to the corresponding brackets, and at least one connecting piece is electrically connected to at least two battery cells simultaneously.

Description

Battery components and electrical equipment

[0001] This application claims priority to Chinese Patent Application No. 202520309610.3, filed on February 25, 2025, entitled "Battery Components and Electrical Devices", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, and more particularly to a battery assembly and an electrical device. Background Technology

[0003] In related technologies, a mounting bracket is provided on the side of the battery module to fix the individual cells of the battery module, and then the individual cells are electrically connected by connecting tabs. Multiple cells can be connected in series via connecting tabs to form a battery module with a larger voltage, or multiple cells can be connected in parallel via connecting tabs to form a battery module with a larger current, or multiple cells can be connected in parallel via connecting tabs and then connected in series to form a battery module with both a larger voltage and a larger current.

[0004] However, when the number of battery cells in a battery module varies and different configuration schemes such as series connection, parallel connection, or a combination of series and parallel connection are adopted, different mounting brackets need to be developed according to different configuration schemes, which leads to higher costs for mounting brackets. Summary of the Invention

[0005] This application provides a battery assembly and an electrical device, with the battery assembly having a low cost.

[0006] In a first aspect, embodiments of this application provide a battery assembly, including:

[0007] A bracket assembly includes at least two brackets, which are arranged along a first direction, and each bracket has at least two limiting holes, which are spaced apart along the first direction.

[0008] A battery module includes multiple battery cells arranged along a first direction and relatively fixed; each battery cell includes a housing and at least one terminal post, the at least one terminal post being located at one end of the housing along a second direction and protruding from the housing, the terminal post being inserted into a limiting hole, and a bracket being connected to the corresponding housing.

[0009] A connector assembly, comprising at least two connectors arranged along a first direction, each connector being connected to a corresponding bracket, and at least one connector being electrically connected to at least two battery cells simultaneously.

[0010] The first direction is perpendicular to the second direction.

[0011] In one possible implementation, each bracket has at least two first positioning parts, which are arranged along a first direction.

[0012] The connecting piece has a second positioning part, which is arranged in a one-to-one correspondence with the first positioning part. One of the first positioning part and the second positioning part is inserted into the other so that the connecting piece and the bracket are relatively fixed in the first direction and the third direction.

[0013] Among them, the first direction, the second direction, and the third direction are all perpendicular to each other.

[0014] In one possible implementation, each bracket has at least one first connecting portion that engages with a connecting piece to fix the connecting piece and the bracket relative to each other in a second direction.

[0015] In one possible implementation, the battery assembly further includes a sampling component, which comprises a substrate and a sampling mainboard. Each connecting piece is electrically connected to the substrate, and the substrate is electrically connected to the sampling mainboard, so that the sampling mainboard can acquire electrical signals from the battery module.

[0016] In one possible implementation, the substrate extends along a first direction;

[0017] Each bracket has a mounting surface located on one side of the limiting hole along the third direction, and the base plate is connected to the mounting surface of each bracket.

[0018] In one possible implementation, the battery assembly further includes at least two first connectors, with the substrate connected to each bracket via corresponding first connectors.

[0019] In one possible implementation, each bracket has at least one first connection hole on its mounting surface, and a first connector is connected to the first connection hole in a one-to-one correspondence.

[0020] In one possible implementation, at least one bracket has a third positioning part, and the sampling motherboard is inserted into the third positioning part so that the sampling motherboard and the bracket are relatively fixed in the first direction and the third direction.

[0021] In one possible implementation, at least one bracket has a second connecting portion that engages with the sampling motherboard to fix the sampling motherboard and the bracket relative to each other in a second direction.

[0022] In one possible implementation, the battery further includes at least one second connector, through which the sampling motherboard is connected to the mounting surface.

[0023] In one possible implementation, the sampling motherboard is located on one side of the substrate along a first direction.

[0024] In one possible implementation, the limiting hole includes a first limiting hole and a second limiting hole, wherein the area of ​​the first limiting hole is smaller than the area of ​​the second limiting hole.

[0025] In one possible implementation, the battery assembly also includes a protective plate, each bracket having a third connection portion, the protective plate being located on the side of the bracket away from the housing, and the protective plate being connected to the third connection portion of each bracket.

[0026] In one possible implementation, at least two supports include a first support having two limiting holes arranged along a first direction;

[0027] And / or, at least two connecting pieces include a first connecting piece, which connects the terminals of two adjacent cells;

[0028] And / or, at least two supports include a second support having four limiting holes arranged along a first direction;

[0029] And / or, at least two connecting pieces include a second connecting piece, the second connecting piece connecting to the terminals of four cells corresponding to the second bracket.

[0030] In one possible implementation, at least two connecting pieces further include two third connecting pieces, and the plurality of battery cells include a first battery cell and a second battery cell, the first battery cell and the second battery cell being located at opposite ends of the battery module along a first direction, and one of the two third connecting pieces being electrically connected to the first battery cell and the other being electrically connected to the second battery cell.

[0031] Secondly, embodiments of this application provide an electrical device, including an electrical appliance and a battery assembly provided in the first aspect above, wherein the battery assembly is used to supply power to the electrical appliance.

[0032] This application provides a battery assembly and an electrical device. The battery assembly includes a support assembly, a battery module, and a connecting piece assembly. The support assembly includes a support with limiting holes. The battery module includes a battery cell, which includes a housing and terminals. The connecting piece assembly includes connecting pieces. Limiting holes are provided for positioning with the terminals, facilitating connection between the support and the housing. Connecting the support to the corresponding housing fixes the support to the side of the battery module. Connecting pieces electrically connect multiple battery cells, forming battery modules with different configurations such as series, parallel, or a combination of series and parallel. Connecting the connecting pieces to the support fixes the relative positions of the connecting pieces and the battery cells, facilitating subsequent electrical connection between the connecting pieces and the cells. Since the support assembly has two or more supports, users can flexibly select and combine multiple supports according to different battery module configurations to form support assemblies with different combinations, without needing to set a specific mounting bracket for each battery module configuration. This improves the versatility of the support assembly and effectively reduces the cost of the battery assembly.

[0033] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the battery components and electrical devices provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0035] Figure 1 is a schematic diagram of the structure of the battery assembly provided in an embodiment of this application;

[0036] Figure 2 is a schematic diagram of the structure of the support assembly in the battery assembly provided in the embodiment of this application;

[0037] Figure 3 is another structural schematic diagram of the support assembly in the battery assembly provided in the embodiment of this application;

[0038] Figure 4 is another structural schematic diagram of the support assembly in the battery assembly provided in the embodiment of this application;

[0039] Figure 5 is a schematic diagram of the structure of the first bracket in the battery assembly provided in the embodiment of this application;

[0040] Figure 6 is a rear view of Figure 5;

[0041] Figure 7 is a schematic diagram of the structure of the second bracket in the battery assembly provided in the embodiment of this application;

[0042] Figure 8 is a rear view of Figure 7;

[0043] Figure 9 is a schematic diagram of the structure of the support assembly, connecting piece assembly and sampling assembly in the battery assembly provided in the embodiment of this application;

[0044] Figure 10 is another structural schematic diagram of the support assembly, connecting piece assembly and sampling assembly in the battery assembly provided in the embodiment of this application;

[0045] Figure 11 is a magnified view of part A in Figure 9;

[0046] Figure 12 is a magnified view of part B in Figure 10;

[0047] Figure 13 is a magnified view of part C in Figure 9;

[0048] Figure 14 is a magnified view of part D in Figure 10;

[0049] Figure 15 is another structural schematic diagram of the battery assembly provided in the embodiment of this application;

[0050] Figure 16 is a schematic diagram of the structure of the support assembly and the protective plate in the battery assembly provided in the embodiment of this application;

[0051] Figure 17 is another structural schematic diagram of the battery assembly provided in the embodiment of this application;

[0052] Figure 18 is a schematic diagram of the battery module provided in an embodiment of this application;

[0053] Figure 19 is a schematic diagram of the structure of the battery cell provided in the embodiment of this application.

[0054] Reference numerals: 100-Bracket assembly; 110-Bracket; 110a-First bracket; 110b-Second bracket; 111-Limiting hole; 1111-First limiting hole; 1112-Second limiting hole; 112-First positioning part; 113-First connecting part; 114-Mounting surface; 1141-First connecting hole; 1142-Second connecting hole; 115-Third positioning part; 116-Second connecting part; 117-Third connecting part; 200-Battery module; 210- Battery cell; 210a - First battery cell; 210b - Second battery cell; 211 - Housing; 212 - Terminal; 300 - Connecting piece assembly; 310 - Connecting piece; 310a - First connecting piece; 310b - Second connecting piece; 310c - Third connecting piece; 311 - Second positioning part; 400 - Sampling assembly; 410 - Substrate; 420 - Sampling main board; 500 - Protective plate; 600 - Battery tray; 700 - First connector; 800 - Second connector.

[0055] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0057] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0059] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0060] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0061] In related technologies, a mounting bracket is provided on the side of the battery module to fix the individual cells of the battery module, and then the individual cells are electrically connected by connecting tabs. Multiple cells can be connected in series via connecting tabs to form a battery module with a larger voltage, or multiple cells can be connected in parallel via connecting tabs to form a battery module with a larger current, or multiple cells can be connected in parallel via connecting tabs and then connected in series to form a battery module with both a larger voltage and a larger current.

[0062] However, when battery modules adopt different electrical connection schemes such as series, parallel, and series-parallel combination, and when the number of cells in the battery module is different, different configuration schemes of battery modules will be formed. Due to the strong limitations of each mounting bracket, different mounting brackets need to be developed according to different configuration schemes, which leads to high cost of mounting brackets.

[0063] In view of this, embodiments of this application provide a battery assembly and an electrical device. In the battery assembly of this application embodiment, after the configuration scheme of the battery module is determined, two or more brackets can be selected and combined according to the configuration of the battery module to form a combined bracket assembly, thereby improving the versatility of the bracket assembly and reducing the cost of the bracket assembly. The bracket is positioned by the terminal post of the battery cell and the bracket is connected to the housing, thereby fixing the bracket assembly to the side of the battery module. The connecting piece can be connected to the bracket to facilitate subsequent electrical connection between the connecting piece and the battery cell.

[0064] The specific implementation methods of the battery components and electrical devices provided in the embodiments of this application will be described in detail below with reference to Figures 1 to 19.

[0065] Referring to Figures 1 to 8, the battery assembly provided in this application embodiment may include a bracket assembly 100, a battery module 200, and a connecting piece assembly 300.

[0066] The bracket assembly 100 includes at least two brackets 110, which are arranged along a first direction (refer to the X direction in the figure). Each bracket 110 has at least two limiting holes 111, which are spaced apart along the first direction.

[0067] Referring to Figures 18 and 19, the battery module 200 includes a plurality of battery cells 210, which are arranged along a first direction and fixed relative to each other. Each battery cell 210 includes a housing 211 and at least one terminal post 212. The at least one terminal post 212 is located at one end of the housing 211 along a second direction (refer to the Y direction in the figures) and protrudes from the housing 211. The terminal post 212 is correspondingly inserted into the limiting hole 111, and the bracket 110 is connected to the corresponding housing 211.

[0068] The connector assembly 300 includes at least two connectors 310, which are arranged along a first direction. Each connector 310 is connected to a corresponding bracket 110, and at least one connector 310 is simultaneously electrically connected to at least two battery cells 210.

[0069] The battery assembly in this embodiment may also include a sampling component 400. In this embodiment, the bracket 110 assembly is used to connect with the battery module 200, thereby facilitating the fixing of the connecting piece assembly 300 and the sampling component 400 to the side of the battery module 200. This facilitates the electrical connection of the connecting piece assembly 300 to each cell 210 in the battery module 200, and facilitates the sampling component 400 to collect electrical signals such as current and voltage from the battery module 200.

[0070] Specifically, the battery module 200 includes multiple battery cells 210, which can be arranged along a first direction and are relatively fixed to each other. For example, two adjacent battery cells 210 can be bonded together with structural adhesive, or multiple battery cells 210 can be bundled together with straps.

[0071] Each cell 210 includes a housing 211 and a terminal 212. The cell 210 may also include a core, which is housed within the housing 211, and the terminal 212 is electrically connected to the core, thereby drawing the current from the core through the terminal 212. The number of terminals 212 can be one or two. When the cell 210 has one terminal 212, one of the housing 211 and the terminal 212 is positively charged, and the other is negatively charged. When each cell 210 has two terminals 212, the polarities of the two terminals 212 are opposite. The two terminals 212 can be located at one end of the housing 211 along the second direction, or at both ends of the housing 211 along the second direction.

[0072] The bracket 110 assembly is disposed on one side of the battery module 200 having the terminal post 212. The bracket 110 assembly may include two or more brackets 110, and each bracket 110 may be disposed corresponding to two or more battery cells 210.

[0073] For example, the battery module 200 includes eight cells 210, each cell 210 having a terminal post 212. The bracket 110 assembly includes two brackets 110, each bracket 110 corresponding to four cells 210. In this case, each bracket 110 may have four limiting holes 111, and the four limiting holes 111 of each bracket 110 are arranged along a first direction. The four limiting holes 111 can be arranged one-to-one with the terminal posts 212 of the four cells 210. The bracket 110 can be simultaneously bonded to the housing 211 of the corresponding two cells 210. In this way, both brackets 110 can be fixed to one side of the battery module 200 along the second direction.

[0074] The connector assembly 300 may include two or more connectors 310. For example, the battery module 200 includes four cells 210, each cell 210 having a terminal 212 at the same end, and the terminals 212 of the four cells 210 are connected in series. The connector assembly 300 may include three connectors 310, the first connector 310 being connected to the terminal 212 of the second cell 210, the second connector 310 being connected to both the terminal 212 of the second cell 210 and the terminal 212 of the third cell 210, and the third connector 310 being connected to the terminal 212 of the fourth cell 210.

[0075] The connecting piece 310 can be welded to the terminal post 212 of the battery cell 210, thereby achieving an electrical connection between the connecting piece 310 and the battery cell 210. Before welding the connecting piece 310 and the terminal post 212, since each bracket 110 is mechanically fixed to the side of the battery module 200 with the terminal post 212, each connecting piece 310 can be mechanically fixed to the corresponding bracket 110 first, thereby fixing the position of the connecting piece 310 and the terminal post 212 relatively, which facilitates the subsequent welding of the connecting piece 310 and the terminal post 212 without the need for welding fixtures, thus simplifying the welding process and reducing welding costs.

[0076] In some embodiments, at least two supports 110 may include at least one of a first support 110a and a second support 110b. The first support 110a has two limiting holes 111 arranged along a first direction, and the second support 110b has four limiting holes 111 arranged along the first direction. At least two connecting pieces 310 may include at least one of a first connecting piece 310a and a second connecting piece 310b. The first connecting piece 310a connects to the terminals 212 of two adjacent battery cells 210. The second connecting piece 310b connects to the terminals 212 of four battery cells 210 corresponding to the second support 110b.

[0077] Referring to FIG18, in some embodiments, at least two connecting pieces 310 further include two third connecting pieces 310c, and the plurality of battery cells 210 include a first battery cell 210a and a second battery cell 210b. The first battery cell 210a and the second battery cell 210b are respectively located at opposite ends of the battery module 200 along a first direction. One of the two third connecting pieces 310c is electrically connected to the first battery cell 210a, and the other is electrically connected to the first battery cell 210a.

[0078] It should be understood that the multiple cells 210 are arranged along the first direction. The first cell 210a described in the above embodiment is the first cell 210, which refers to the first cell 210 when the multiple cells 210 in the battery module 200 are arranged along the first direction. The second cell 210b is the last cell 210, which refers to the last cell 210 when the multiple cells 210 in the battery module 200 are arranged along the first direction.

[0079] Specifically, Figure 2 illustrates a bracket 110 assembly composed entirely of the first bracket 110a, Figures 3 and 9 illustrate a bracket 110 assembly composed entirely of the second bracket 110b, and Figures 4 and 10 illustrate a bracket 110 assembly composed of the first bracket 110a and the second bracket 110b.

[0080] For example, when the battery module 200 includes 12 cells 210 and these 12 cells 210 are connected in series, this is one configuration scheme of the battery module 200. In this configuration scheme, two first brackets 110a and two second brackets 110b can be combined to form the bracket assembly 100 shown in Figure 4 and Figure 10. Five first connecting pieces 310a and two third connecting pieces 310c can be selected to form the connecting piece assembly 300 shown in Figure 10. The two third connecting pieces 310c are respectively connected to the terminal post 212 of the first cell 210 and the terminal post 212 of the twelfth cell 210. The terminal posts 212 of the second cell 210 to the terminal posts 212 of the eleventh cell 210 are grouped in pairs, divided into five groups, and each group is connected by five first connecting pieces 310a, thereby connecting the 12 cells 210 in series to form a 12s battery module 200.

[0081] For example, when the battery module 200 includes 16 cells 210, and these 16 cells 210 are arranged in 2 parallel and 8 series (2P8S), this is another configuration scheme of the battery module 200. In this configuration scheme, four second brackets 110b can be combined to form the bracket assembly 100 shown in Figure 9, and four second connecting pieces 310b can be selected to form the connecting piece assembly 300 shown in Figure 9. Each second connecting piece 310b is connected to the terminal post 212 of the four cells 210 corresponding to the same second bracket 110b. In this way, the 16 cells 210 can be electrically connected to form the 2P8S battery module 200.

[0082] For example, when the battery module 200 includes 12 cells 210, and these 12 cells 210 are arranged in 2 parallel and 6 series (2P6S), this is another configuration scheme of the battery module 200. In this configuration scheme, three second brackets 110b can be combined to form the bracket assembly 100 shown in Figure 3, and six first connecting pieces 310a are selected. The 12 cells 210 are divided into six groups along the first direction, and each of the six first connecting pieces 310a connects two cells 210. In this way, the 12 cells 210 can be electrically connected to form a 2P6S battery module 200.

[0083] In other words, in this embodiment, different combinations of bracket assembly 100 and different combinations of connecting piece assembly 300 can be selected according to the configuration scheme of battery module 200. The bracket 110 can be set as one or two standardized brackets 110, and the connecting piece 310 can be set as one or two standardized connecting pieces 310.

[0084] In this way, when dealing with battery modules 200 with different configuration schemes, standard brackets 110 and standard connecting pieces 310 can be used for arrangement and combination without the need to redevelop new brackets 110 and new connecting pieces 310, thereby reducing the cost of battery components and improving the versatility of brackets 110 and connecting pieces 310.

[0085] The battery assembly provided in this application embodiment includes a bracket assembly 100, a battery module 200, and a connecting piece assembly 300. The bracket assembly 100 includes a bracket 110, which includes a limiting hole 111. The battery module 200 includes a battery cell 210, which includes a housing 211 and a terminal post 212. The connecting piece assembly 300 includes a connecting piece 310. By setting a limiting hole 111 for positioning with the terminal post 212, the bracket 110 is connected to the housing 211. By connecting the bracket 110 to the corresponding housing 211, the bracket 110 is fixed to the side of the battery module 200. By setting a connecting piece 310 for electrically connecting multiple cells 210, battery modules 200 with different configuration schemes such as series, parallel, or series-parallel combination are formed. By connecting the connecting piece 310 to the bracket 110, the position of the connecting piece 310 and the cell 210 is relatively fixed, so that the connecting piece 310 can be electrically connected to the cell 210 later. Since the bracket assembly 100 has two or more brackets 110, users can flexibly select multiple brackets 110 to combine according to different battery module 200 configuration schemes to form bracket assemblies 100 with different combinations, without having to set a specific mounting bracket for each battery module 200 configuration scheme, thereby improving the versatility of the bracket assembly 100 and effectively reducing the cost of the battery assembly.

[0086] Referring to Figures 5, 7, 9 to 12, in one possible implementation, each bracket 110 has at least two first positioning portions 112, and the at least two first positioning portions 112 are arranged along a first direction.

[0087] The connecting piece 310 has a second positioning part 311, which is correspondingly disposed with the first positioning part 112. One of the first positioning part 112 and the second positioning part 311 is inserted into the other so that the connecting piece 310 and the bracket 110 are relatively fixed in the first direction and the third direction (refer to the Z direction in the figure). The first direction, the second direction and the third direction are perpendicular to each other.

[0088] It is understandable that since each bracket 110 is provided with two or more first positioning parts 112 along the first direction, when the first positioning parts 112 and the second positioning parts 311 are inserted one by one, the displacement of the connecting piece 310 in the first direction can be restricted. The second positioning parts 311 can be inserted into the first positioning parts 112 along the third direction, thereby restricting the displacement of the connecting piece 310 in the third direction. In this way, the first positioning parts 112 and the second positioning parts 311 cooperate to fix the positions of the connecting piece 310 and the bracket 110 in the first direction and the third direction, thereby fixing the positions of the connecting piece 310 and the battery cell 210, which facilitates the subsequent electrical connection between the connecting piece 310 and the battery cell 210.

[0089] Referring to Figures 11 and 12, in some embodiments, each bracket 110 has at least one first connecting portion 113, which engages with the connecting piece 310 to fix the connecting piece 310 and the bracket 110 relative to each other in a second direction.

[0090] In this way, after the connecting piece 310 is engaged with the first connecting part 113, the first connecting part 113 can restrict the displacement of the connecting piece 310 in the second direction, thereby fixing the positions of the connecting piece 310 and the bracket 110 in the second direction, and thus fixing the positions of the connecting piece 310 and the battery cell 210, which facilitates the subsequent electrical connection between the connecting piece 310 and the battery cell 210.

[0091] Referring to Figures 9 and 10, in one possible implementation, the sampling component 400 includes a substrate 410 and a sampling mainboard 420, with each connecting piece 310 electrically connected to the substrate 410 and the substrate 410 electrically connected to the sampling mainboard 420.

[0092] Thus, after each connecting piece 310 is electrically connected to the substrate 410, the electrical signal of the corresponding cell 210 can be transmitted to the substrate 410 through the connecting piece 310. The substrate 410 is electrically connected to the sampling motherboard 420, so that the electrical signal can be transmitted to the sampling motherboard 420 through the substrate 410, thereby collecting the electrical signals of each cell 210 through the sampling motherboard 420.

[0093] Referring to Figures 5, 7, 9, and 10, in some embodiments, the substrate 410 extends along a first direction. Each bracket 110 has a mounting surface 114 located on one side of the limiting hole 111 along a third direction, and the substrate 410 is connected to the mounting surface 114 of each bracket 110.

[0094] In other words, the substrate 410 and the battery cell 210 are arranged in the same direction to facilitate the acquisition of electrical signals from each battery cell 210. Each bracket 110 has a mounting surface 114 for fixing the substrate 410. For example, the substrate 410 can be connected to the mounting surface 114 by adhesive bonding, thereby fixing the position of the substrate 410 and the bracket assembly 100 relative to each other, thus preventing the position of the substrate 410 from changing during operation.

[0095] Referring to FIG10, in some embodiments, the battery assembly further includes at least two first connectors 700, and the substrate 410 is connected to each bracket 110 through the corresponding first connector 700.

[0096] Thus, the substrate 410 can be connected to each bracket 110 in the bracket assembly 100 through the first connector 700, thereby fixing the substrate 410 to the side of the battery module 200. For example, the first connector 700 can be connected to each bracket 110 in a one-to-one correspondence, or two first connectors 700 can be connected to one bracket 110 in a corresponding manner. This application embodiment does not limit this.

[0097] Referring to Figures 5 to 7, in some embodiments, each bracket 110 has at least one first connection hole 1141 on its mounting surface 114, and the first connector 700 is connected to the first connection hole 1141 in a corresponding manner.

[0098] In this way, by cooperating with the first connector 700 and the first connection hole 1141, the substrate 410 can be reliably connected to each bracket 110, thereby fixing the substrate 410 to the side of the battery module 200 to facilitate the acquisition of electrical signals from the battery cell 210. The first connector 700 can be a rivet or screw, etc., and this embodiment does not limit its use.

[0099] Referring to Figures 5, 7, 12 and 13, in one possible implementation, at least one bracket 110 has a third positioning part 115, and the sampling motherboard 420 is inserted into the third positioning part 115 so that the sampling motherboard 420 and the bracket 110 are fixed relative to each other in the first direction and the third direction.

[0100] It is understood that the number of brackets 110 in a bracket assembly 100 is two or more, and the number of sampling motherboards 420 in a sampling assembly 400 is one. A sampling assembly 400 is connected to a bracket assembly 100. Therefore, as long as at least one of the multiple brackets 110 is provided with a third positioning part 115, the position of the sampling motherboard 420 in the first direction and the third direction can be restricted by the third positioning part 115, thereby realizing the positioning of the sampling motherboard 420.

[0101] In order to standardize the multiple brackets 110, a third positioning part 115 can be provided on each bracket 110. This can reduce the cost of the bracket 110, and the third positioning part 115 of the sampling motherboard 420 can be selected to be plugged into the corresponding bracket 110 according to the specific installation position of the sampling motherboard 420.

[0102] Referring to Figures 5, 7, 12 and 13, in some embodiments, at least one bracket 110 has a second connecting portion 116, which engages with the sampling mainboard 420 to fix the sampling mainboard 420 and the bracket 110 relative to each other in a second direction.

[0103] With this configuration, once the sampling motherboard 420 is engaged with the second connecting part 116, the displacement of the sampling motherboard 420 in the second direction can be restricted, thereby fixing the sampling motherboard 420 and the bracket 110 relatively in the second direction, thus achieving the positioning of the sampling motherboard 420.

[0104] Referring to FIG10, in one possible implementation, the battery assembly further includes at least one second connector 800, through which the sampling motherboard 420 is connected to the mounting surface 114.

[0105] Thus, after the sampling motherboard 420 is positioned by one or both of the third positioning part 115 and the second connecting part 116, the sampling motherboard 420 can be locked onto the bracket 110 by the second connecting member 800, thereby preventing the sampling motherboard 420 from moving relative to the bracket assembly 100.

[0106] Alternatively, the third positioning part 115 and the second connecting part 116 may not be used for positioning, and the sampling motherboard 420 and the mounting surface 114 may be directly connected through the second connecting member 800.

[0107] The mounting surface 114 may be provided with a second connecting hole 1142. The second connector 800 cooperates with the second connecting hole 1142 to lock the sampling motherboard 420 to the mounting surface 114. For example, the second connector 800 may include screws and press-fit nuts.

[0108] In one possible implementation, the sampling motherboard 420 is located on one side of the substrate 410 along the first direction. It is understood that a low-voltage connector can be provided on the sampling motherboard 420, which can be plugged into an external line to transmit the electrical signals collected by the sampling motherboard 420. Since the bracket 110 in this embodiment can be arbitrarily combined, the sampling motherboard 420 can be placed at any position on the substrate 410. This allows for flexible adjustment of the low-voltage connector position according to the installation position of the battery assembly, and when the sampling motherboard 420 is located on one side of the substrate 410 along the first direction, it facilitates the extraction of electrical signals.

[0109] For example, Figure 9 shows the sampling motherboard 420 located on the first side of the substrate 410 along the first direction, and Figure 10 shows the sampling motherboard 420 located on the second side of the substrate 410 along the first direction.

[0110] Referring to Figures 5 to 8, in some embodiments, the limiting hole 111 includes a first limiting hole 1111 and a second limiting hole 1112, wherein the area of ​​the first limiting hole 1111 is smaller than the area of ​​the second limiting hole 1112.

[0111] In other words, the first limiting hole 1111 is smaller and the second limiting hole 1112 is larger. Since multiple cells 210 are arranged along the first direction and assembled into a whole, the terminals 212 of two adjacent cells 210 have assembly tolerances in the first direction. After multiple cells 210 are assembled in sequence along the first direction, cumulative assembly tolerances will be generated. When the second limiting hole 1112 is larger, it is beneficial for the second limiting hole 1112 to cooperate with the terminal 212, thereby preventing the terminal 212 from being unable to be smoothly inserted into the limiting hole 111 due to the assembly tolerance of the terminal 212.

[0112] The shape of the limiting hole 111 can be set according to the shape of the pole post 212. For example, the limiting hole 111 can be a round hole or an oblong hole. This embodiment does not make a specific limitation on this.

[0113] Referring to Figures 5 to 8, 15 and 16, in one possible implementation, the battery assembly further includes a protective plate 500, each bracket 110 having a third connecting portion 117, the protective plate 500 being located on the side of the bracket 110 facing away from the housing 211, and the protective plate 500 being connected to the third connecting portion 117 of each bracket 110.

[0114] The protective plate 500 can be a flat sheet made of plastic, which simplifies the manufacturing process of the protective plate 500 and reduces the cost of the battery module. The protective plate 500 can provide insulation protection for the side of the battery module 200 with the terminal post 212. After each bracket 110 in the bracket assembly 100 is fixed to the side of the battery module 200 with the terminal post 212, the protective plate 500 can be connected to the third connecting part 117 of each bracket 110, thereby connecting the protective plate 500 to the bracket assembly 100.

[0115] Each bracket 110 can be provided with a third connecting part 117 at its corner, and the guard plate 500 can be connected to the third connecting part 117 by rivets or screws.

[0116] Referring to FIG17, the battery assembly of this embodiment may further include a battery tray 600, which has a receiving cavity in which the battery module 200 and the support assembly 100 are housed.

[0117] Furthermore, this application also provides an electrical device, which includes an electrical component and a battery assembly provided in the foregoing embodiments. The battery assembly is used to supply power to the electrical component. The structure and working principle of the battery assembly have been described in detail in the foregoing embodiments and will not be repeated here.

[0118] For example, the electrical equipment can be a vehicle, the electrical device can be an electric motor, and the battery pack can provide electrical energy to the electric motor, thereby driving the vehicle. The vehicle can be a pure electric vehicle, a range-extended electric vehicle, a hybrid electric vehicle, etc., and can also be any vehicle with a battery pack; this embodiment does not limit this.

[0119] In some embodiments, the vehicle can be a forklift. Since forklifts have different models and specifications, they need to be matched with battery packs of different configuration schemes. The battery pack in this embodiment can be flexibly configured according to the model and specification requirements of the forklift. For example, the forklift can be configured with a 12S battery pack or a 2P8S battery pack. The battery pack can be flexibly arranged and combined according to the corresponding configuration scheme to form a corresponding bracket assembly 100, without having to redesign and install the bracket for each model of forklift. This can reduce the cost of the battery pack, thereby reducing the cost of the forklift.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery assembly, characterized in that, include: A support assembly (100) includes at least two supports (110), the at least two supports (110) are arranged along a first direction, each support (110) has at least two limiting holes (111), the at least two limiting holes (111) are spaced apart along the first direction; A battery module (200) includes a plurality of battery cells (210), which are arranged along a first direction and fixed relative to each other; each battery cell (210) includes a housing (211) and at least one terminal (212), at least one terminal (212) is located at one end of the housing (211) along a second direction and protrudes from the housing (211), and the terminal (212) is inserted into the limiting hole (111) one by one, and the bracket (110) is connected to the corresponding housing (211); A connecting piece assembly (300) includes at least two connecting pieces (310) arranged along the first direction, each connecting piece (310) being connected to a corresponding bracket (110), and at least one connecting piece (310) being electrically connected to at least two battery cells (210) simultaneously. Wherein, the first direction is perpendicular to the second direction.

2. The battery assembly according to claim 1, characterized in that, Each of the brackets (110) has at least two first positioning portions (112), and the at least two first positioning portions (112) are arranged along the first direction; The connecting piece (310) has a second positioning part (311), which is provided in a one-to-one correspondence with the first positioning part (112). One of the first positioning part (112) and the second positioning part (311) is inserted into the other so that the connecting piece (310) and the bracket (110) are relatively fixed in the first direction and the third direction. Wherein, the first direction, the second direction, and the third direction are mutually perpendicular to each other.

3. The battery assembly according to claim 1, characterized in that, Each of the brackets (110) has at least one first connecting portion (113) that engages with the connecting piece (310) to fix the connecting piece (310) and the bracket (110) relative to each other in the second direction.

4. The battery assembly according to claim 2, characterized in that, It also includes a sampling component (400), which includes a substrate (410) and a sampling motherboard (420). Each of the connecting pieces (310) is electrically connected to the substrate (410), and the substrate (410) is electrically connected to the sampling motherboard (420) so that the sampling motherboard (420) can collect the electrical signals of the battery module (200).

5. The battery assembly according to claim 4, characterized in that, The substrate (410) extends along the first direction; Each of the brackets (110) has a mounting surface (114) along the third direction, the mounting surface (114) being located on one side of the limiting hole (111), and the base plate (410) being connected to the mounting surface (114) of each of the brackets (110).

6. The battery assembly according to claim 5, characterized in that, It also includes at least two first connectors (700), the substrate (410) being connected to each of the brackets (110) via the corresponding first connectors (700).

7. The battery assembly according to claim 6, characterized in that, Each bracket (110) has at least one first connection hole (1141) on its mounting surface (114), and the first connector (700) is connected to the first connection hole (1141) in a corresponding manner.

8. The battery assembly according to claim 4, characterized in that, At least one of the brackets (110) has a third positioning part (115), and the sampling motherboard (420) is inserted into the third positioning part (115) so that the sampling motherboard (420) and the bracket (110) are relatively fixed in the first direction and the third direction.

9. The battery assembly according to claim 4, characterized in that, At least one of the brackets (110) has a second connecting portion (116) that engages with the sampling motherboard (420) to fix the sampling motherboard (420) and the bracket (110) relative to each other in the second direction.

10. The battery assembly according to claim 5, characterized in that, It also includes at least one second connector (800), through which the sampling motherboard (420) is connected to the mounting surface (114).

11. The battery assembly according to claim 4, characterized in that, The sampling motherboard (420) is located on one side of the substrate (410) along the first direction.

12. The battery assembly according to claim 1, characterized in that, The limiting hole (111) includes a first limiting hole (1111) and a second limiting hole (1112), wherein the area of ​​the first limiting hole (1111) is smaller than the area of ​​the second limiting hole (1112).

13. The battery assembly according to claim 1, characterized in that, It also includes a protective plate (500), each of the brackets (110) having a third connecting portion (117), the protective plate (500) being located on the side of the bracket (110) away from the housing (211), the protective plate (500) being connected to the third connecting portion (117) of each of the brackets (110).

14. The battery assembly according to any one of claims 1-13, characterized in that, The at least two supports (110) include a first support (110a) having two limiting holes (111) arranged along the first direction; And / or, the at least two connecting pieces (310) include a first connecting piece (310a) that connects the terminals (212) of two adjacent cells (210); And / or, the at least two supports (110) include a second support (110b) having four of the limiting holes (111) arranged along the first direction; The at least two connecting pieces (310) include a second connecting piece (310b), which connects to the poles (212) of the four cells (210) corresponding to the second bracket (110b).

15. The battery assembly according to claim 14, characterized in that, The at least two connecting pieces (310) further include two third connecting pieces (310c), and the plurality of battery cells (210) include a first battery cell (210a) and a second battery cell (210b), wherein the first battery cell (210a) and the second battery cell (210b) are respectively located at opposite ends of the battery module (200) along the first direction; One of the two third connecting pieces (310c) is electrically connected to the first battery cell (210a), and the other is electrically connected to the second battery cell (210b).

16. An electrical appliance, characterized in that, It includes an electrical device and a battery assembly as described in any one of claims 1-15, the battery assembly being used to supply power to the electrical device.

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