Battery modules and electrical equipment

Abstract

This invention provides a battery module and electrical device, relating to the field of battery technology, with the aim of improving the problem of difficult alignment between battery cells and busbars in related technologies. The battery module includes a cell assembly, a busbar assembly, and a support assembly. The cell assembly includes at least three parallel cell rows, each cell row including multiple cells arranged along a first direction. The busbar assembly includes a busbar connected to the output terminal of each cell in the at least three cell rows. The support assembly is configured to fix the busbar assembly, and includes at least one support. The busbar assembly is disposed on the support, and three adjacent cell rows form a cell row group. The cell row group has an accommodating space at at least one end in the first direction, and the support is at least partially located within the accommodating space.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more specifically to a battery module and electrical equipment. Background Technology

[0002] With the continuous development of power battery technology, the application scenarios of power batteries are becoming more and more numerous, and the requirements for power batteries are also becoming increasingly stringent. A power battery generally includes a casing and a battery module, which in turn includes cell assemblies and a busbar assembly. The busbars in the busbar assembly connect the individual cells in the cell assembly, so that the output of the battery module can supply power to electrical devices.

[0003] In related technologies, battery cell assemblies have a large number of cells, and the spacing between cells and the space around the cells are difficult to fully utilize, resulting in a large overall battery module size. Summary of the Invention

[0004] The embodiments of the present invention provide a battery module and an electrical device that can at least improve the technical problem of difficult alignment between battery cells and busbars in related technologies.

[0005] In a first aspect, embodiments of the present invention provide a battery module comprising a cell assembly, a busbar assembly, and a support assembly. The cell assembly includes at least three parallel cell rows, each cell row comprising a plurality of cells arranged along a first direction, each cell including an output terminal. The busbar assembly includes a busbar connected to the output terminal of each cell in the at least three cell rows. The support assembly is configured to fix the busbar assembly, the support assembly including at least one support; the busbar assembly is disposed on the support. Three adjacent cell rows constitute a cell row group, the cell row group having an accommodating space at at least one end in the first direction, and the support being at least partially located within the accommodating space.

[0006] In one embodiment, the battery cell array includes a first battery cell array, a second battery cell array, and a third battery cell array. The first battery cell array, the second battery cell array, and the third battery cell array each have a first battery cell, a second battery cell, and a third battery cell at one end located in the first direction, respectively. The second battery cell is recessed inward relative to the first battery cell array and the third battery cell array to form the accommodating space between the first battery cell, the second battery cell, and the third battery cell.

[0007] In one embodiment, the bracket includes a connecting portion and a limiting portion located on at least one side of the connecting portion, the bus assembly is disposed on the connecting portion, and the limiting portion has a groove on the side near the cell assembly, wherein at least one of the first cell and the third cell is located in the groove.

[0008] In one embodiment, the limiting portion is located on both sides of the connecting portion, and the limiting portion has two grooves on the side near the battery cell assembly, wherein the first battery cell and the third battery cell are respectively located in the two grooves.

[0009] In one embodiment, the battery cell assembly has a positive output electrode and a negative output electrode, and the bus assembly further includes an output connector, which is electrically connected to the positive output electrode or the negative output electrode; the connection portion has a receiving groove on the side away from the battery cell assembly, and the output connector is located in the receiving groove.

[0010] In one embodiment, the bus includes an output electrode connector, which includes a first connecting piece and a second connecting piece connected to each other. The first connecting piece is electrically connected to the positive output electrode or the negative output electrode, and the second connecting piece is electrically connected to the output terminal connector.

[0011] In one embodiment, the connecting portion is further provided with an opening communicating with the receiving groove on the side near the busbar assembly, and the output connector is provided with a slot facing the opening. The second connecting piece is inserted into the slot through the opening and electrically connected to the output connector.

[0012] In one embodiment, the first connecting piece is made of aluminum; and / or, the second connecting piece is made of copper.

[0013] In one embodiment, the material of the first connecting piece is 1060-O state aluminum; and / or, the material of the second connecting piece is T2-Y2 copper.

[0014] In one embodiment, the battery cell array has two accommodating spaces in the first direction, the two accommodating spaces being located at both ends of the battery cell array; the at least one support includes two supports, the two supports being at least partially located within the two accommodating spaces.

[0015] In one embodiment, the cell array has the accommodating space at one end in the first direction, the at least three cell arrays include at least four cell arrays, wherein the four adjacent cell arrays have two accommodating spaces in the first direction, the two accommodating spaces being located at both ends of the four adjacent cell arrays respectively; the at least one support includes two supports, the two supports being at least partially located within the two accommodating spaces respectively.

[0016] Secondly, embodiments of the present invention provide an electrical device that includes the battery module described in any of the above embodiments.

[0017] The beneficial effects of the embodiments of the present invention are as follows:

[0018] In embodiments of the present invention, the groove and the battery cell accommodated therein enable positioning between the support and the battery cell assembly, thereby facilitating the alignment and connection between the busbar and the battery cell assembly. Furthermore, the connecting portion and the limiting portion in the support are adapted to two adjacent but staggered battery cells, respectively. The groove in the limiting portion can accommodate the first battery cell, while the accommodating space between the two battery cells can accommodate the connecting portion. This staggered arrangement allows the support as a whole to achieve better positioning with the battery cell assembly, further facilitating the connection between the busbar and the battery cell assembly. In addition, the connecting portion is located within the accommodating space, thus fully utilizing this space and avoiding the problem of an excessively large overall battery module volume caused by the connecting portion being located in other spaces. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of a battery module provided in some embodiments of the present invention;

[0021] Figure 2 This is a schematic diagram of a partial structure of a battery module provided in some embodiments of the present invention;

[0022] Figure 3 yes Figure 2 Top view;

[0023] Figure 4 This is a schematic diagram of a partial structure of a battery module provided in some other embodiments of the present invention;

[0024] Figure 5 These are schematic diagrams of the bus assembly and support assembly provided in some embodiments of the present invention;

[0025] Figure 6 This is a schematic diagram of a partial structure of a battery module provided in some embodiments of the present invention;

[0026] Figure 7 This is a schematic diagram of a partial structure of a battery module provided in some embodiments of the present invention;

[0027] Figure 8 This is a schematic diagram of a partial structure of a battery module provided in some embodiments of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0029] In the description of this specification, the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0030] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0031] In describing some embodiments, the term "connection" and its derivative expressions may be used. For example, the term "connection" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0032] As used herein, “approximately” includes the values ​​stated and the average value within an acceptable range of deviation from the given values, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0033] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0034] A battery module typically includes a cell assembly and a busbar assembly. The cell assembly comprises several cells, each with an output terminal. By connecting the output terminal of each cell in the cell assembly to a busbar in the busbar assembly, the cell assembly can supply power to electrical devices.

[0035] In related technologies, battery cell assemblies have a large number of cells, and the spacing between cells and the space around them is difficult to fully utilize, resulting in a large overall battery module size. Furthermore, busbar assemblies typically have alignment holes for the cells to ensure proper alignment of the output terminal of each cell with the busbar. However, the diameter of these alignment holes is usually small, making alignment difficult. This can lead to poor contact between some cells and the busbar, affecting the output power of the battery cell assembly and even rendering the assembly unusable.

[0036] Based on this, such as Figure 1 As shown, some embodiments of this disclosure provide a battery module 1000, which includes a cell assembly 100, a busbar assembly 200, and a support assembly 300. The support assembly 300 is configured to fix the busbar assembly 200, and includes at least one support 11 on which the busbar assembly 200 is disposed.

[0037] like Figure 1 and Figure 2 As shown, the battery cell assembly 100 includes at least three parallel cell rows 10. For each of the at least three cell rows 10 (i.e., all cell rows 10), each cell row 10 includes a plurality of cells 111 arranged along a first direction X. Each cell 111 includes an output electrode 120.

[0038] In some examples, each cell row 10 may contain the same number of cells 11, that is, adjacent or spaced-apart cell rows 10 may contain the same number of cells.

[0039] In other examples, the number of cells 11 included in each cell block 10 may be unequal. For example, the number of cells 11 included in adjacent cell blocks 10 may be unequal. Another example is that the number of cells 11 included in cell blocks 10 that are spaced apart may be unequal. Yet another example is that the number of cells 11 included in cell blocks 10 that are either mutually adjacent or spaced apart may all be unequal.

[0040] For ease of illustration, some embodiments of this disclosure are described with an equal number of cells 11 included in mutually spaced cell rows 10.

[0041] In some examples, rows of 10 cells spaced apart from each other are arranged side by side.

[0042] It should be noted that the multiple cell rows 10 are arranged side by side, that is, at least one end of the multiple cell rows 10 is located on the same straight line. For example, the cells 111 at the same end of the multiple cell rows 10 in the first direction X (e.g., Figure 2 The cells indicated by numbers 1111 and 1113 are located in the same straight line. Figure 2 Only four cell rows 10 are shown in the figure. It can be understood that when there are three cell rows 10 arranged in parallel, the cells 111 at the same end of the three cell rows 10 in the first direction X are located on the same straight line.

[0043] In some examples, such as Figure 3 As shown, the straight line containing one end of the plurality of cell arrays 10 (e.g., Figure 3 The straight line containing the two battery cells indicated by reference numerals 1111 and 1113 extends along the second direction Y, and the second direction Y forms an angle with the first direction X. For example, this angle is approximately 90°. For example, the angle can be 85°, 88°, 90°, 92°, 95°, etc.

[0044] Since each cell row 10 in the spaced-apart cell rows 10 includes the same number of cells 111, the two ends of the multiple cell rows 10 are located on two different straight lines, and the two straight lines are parallel to each other.

[0045] In some examples, such as Figure 2 As shown, for the above-mentioned at least three cell rows 10 (i.e., all cell rows 10), any two adjacent cell rows 10 are staggered. For example, in two adjacent cell rows 10, the first end of one cell row 10 and the first end of the other cell row 10 have a distance greater than 0 in the first direction X, and the first ends of the above-mentioned different cell rows 10 are all located at the same end in the first direction X.

[0046] For example, the aforementioned spacing is half the center-to-center distance between two adjacent cells 111 in the same cell bar 10. That is, the distance between the first end of one cell bar 10 and the first end of another adjacent cell bar 10 in the first direction X is equal to half the center-to-center distance between two adjacent cells 111 in one of the cell bars. In this case, as... Figure 2 As shown, cell 1112 is located on the axis of symmetry of cells 1111 and 1114, which allows for a good misalignment between adjacent cell rows 10. Furthermore, for cylindrical cells, one cell row 10 can, to some extent, fill the gap between adjacent cells 111 in another adjacent cell row 10, thereby optimizing the space utilization of the cell assembly 100.

[0047] By arranging all the cell blocks 10 in a combination of staggered and side-by-side configurations, the space utilization of the cell assembly 100 can be optimized, making the use of space in the cell assembly 100 more efficient and effective. Furthermore, for the two staggered cell blocks 111, there is a larger operating space between them during the connection process with the busbar of the busbar assembly, which helps to improve the connection success rate and connection stability of the cell blocks 111.

[0048] In some examples, such as Figure 2 As shown, the output terminal 120 of the battery cell 111 includes a negative terminal 121 and a positive terminal 122. For example, the negative terminal 121 and the positive terminal 122 are located at the same end of the battery cell 111, and the negative terminal 121 and the positive terminal 122 are staggered in the length direction of the battery cell 111. This helps to avoid interference when the negative terminal 121 and the positive terminal 122 are connected to the busbar respectively.

[0049] For example, one end of the battery cell 111 has a terminal post, with the positive terminal 122 located at the end of the terminal post away from the battery cell 111, and the negative terminal 121 located on the plane of the side of the battery cell 111 where the terminal post is located. This allows the negative terminal 121 and the positive terminal 122 to be misaligned along the length of the battery cell 111, which is beneficial for the connection between the output terminal 120 and the busbar.

[0050] In some embodiments, such as Figure 5 As shown, the bus assembly 200 includes a busbar 22, which is connected to the output terminal 120 of each of the at least three cell groups 10 (i.e., all cells 111). The busbar 22 allows all cells 111 to be connected in series and / or in parallel, thereby enabling the positive and negative output electrodes of the cell assembly 100 to supply power to electrical devices.

[0051] In some examples, bus 22 includes multiple conductive busbars, which are connected to cells 111 at different locations, thereby enabling series and / or parallel connection of all cells 111 in the cell assembly 100, and thus enabling the use of positive and negative output electrodes to supply power to electrical devices.

[0052] In some examples, the busbar assembly 200 also includes a first insulating film 24 and a second insulating film 25 located on both sides of the busbar 22. The first insulating film 24 and the second insulating film 25 can be made of PET blue film. The busbar 22 and the insulating film can be fixed together by hot pressing, which facilitates the subsequent alignment and connection between the busbar 22 and the battery cell 111.

[0053] In some examples, the bus assembly 200 also includes an FPC 23 located between the second insulating film 25 and the bus 22. The FPC 23 is electrically connected to the bus 22 and can collect information about the battery cell 111, thereby facilitating the monitoring and management of the operating status of the battery cell 111.

[0054] In some embodiments, such as Figure 2-7 As shown, in all the cell blocks 10, three adjacent cell blocks 10 constitute a cell block group, and at least one end of the cell block group in the first direction X has a receiving space 130, and the support 11 is at least partially located in the receiving space 130.

[0055] This design allows the space for the battery cell assembly 100 to be utilized by the bracket 11, avoiding the problem of the bracket 11 occupying other space and making the overall size of the battery module too large. In addition, the bracket 11 not only works with the storage space to provide a good positioning function, thus facilitating the connection between the busbar 22 and the battery cell assembly 100, but also provides good support for the busbar assembly 200, making it easier to remove and place the busbar assembly.

[0056] For example, the bracket 11 may be partially or entirely located within the accommodating space 130, and can be arranged according to actual needs.

[0057] In some embodiments, such as Figure 2-7 As shown, the cell array (i.e., the three adjacent cell arrays 10) includes a first cell array 101, a second cell array 102, and a third cell array 103. The first cell array 101, the second cell array 102, and the third cell array 103 each have a first cell 1111, a second cell 1112, and a third cell 1113 at one end in the first direction X. That is, in the first direction X, the first cell array 101 includes the first cell 1111 at one end, the second cell array 102 includes the second cell 1112 at one end, and the third cell array 103 includes the third cell 1113 at one end; and the first cell 1111, the second cell 1112, and the third cell 1113 are all located at the same end of the cell array.

[0058] The second cell 1112 is recessed inward relative to the first cell array 101 and the third cell array 103 to form the aforementioned accommodating space 130 between the first cell 1111, the second cell 1112 and the third cell 1113.

[0059] This arrangement helps to ensure the relative stability between the three adjacent cell arrays 10, and also allows the accommodating space 130 to have a larger space size for the bracket 11 to be placed.

[0060] In some embodiments, such as Figure 3 As shown, the difference in the number of cells 111 in any two adjacent cell blocks 10 is equal to 0, that is, the number of cells in any two adjacent cell blocks 10 is equal. In this case, all cell blocks 10 have the same number of cells 111. In this case, one end of the cell block group in the first direction X has a accommodating space 130.

[0061] In some examples, continue to refer to Figure 3 The cell assembly 100 includes at least four cell rows 10, wherein each of the four adjacent cell rows 10 has two receiving spaces 130 at both ends in the first direction X. That is, for the four adjacent cell rows 10, three adjacent cell rows 10 have one receiving space 130 at one end in the first direction X, and the other three adjacent cell rows 10 have one receiving space 130 at the other end in the first direction X. The support assembly 300 includes two supports 11, each of which is at least partially located within one of the two receiving spaces 130. For example, the connection portion 112 of the two supports 11 is located within each of the two receiving spaces 130.

[0062] With this configuration, the two brackets 11 are located at both ends of the battery cell assembly 100, and the busbar assembly 200 can be fixed on the two brackets 11. When the two brackets 11 are placed in the two accommodating spaces 130 respectively, the busbar 22 in the busbar assembly 200 and the battery cell assembly 100 can be quickly aligned, which facilitates the subsequent connection between the busbar 22 and the battery cell assembly 100.

[0063] In some embodiments, such as Figure 4 As shown, the difference in the number of cells 111 in any two adjacent cell blocks 10 is not equal to 0, that is, the number of cells in two adjacent cell blocks 10 is not equal. For example, the cell block assembly has accommodating spaces 130 at both ends in the first direction X, and the support assembly 300 includes two supports 11 (… Figure 4 Only one support 11 is shown in the diagram, and the two supports 11 are at least partially located within the two receiving spaces 130. For example, the connecting portion 112 of the two supports 11 is located within the two receiving spaces 130 respectively.

[0064] With this configuration, the two supports 11 are located at both ends of the cell assembly 100, and the busbar assembly 200 can be fixed on the two supports 11. When the two supports 11 are placed in the two accommodating spaces 130 respectively, the busbar 22 and the cell assembly 100 can be quickly aligned, thereby facilitating the subsequent connection between the busbar 22 and the cell assembly 100. In addition, the above structure can make full use of the accommodating space 130 and make the overall structure of the battery module relatively regular, effectively saving the space around the cell assembly 100.

[0065] In some embodiments, such as Figure 2-7 As shown, the bracket 11 includes a connecting portion 112 and a limiting portion 113 located on at least one side of the connecting portion 112. The bus assembly 200 is disposed on the connecting portion 112. The limiting portion 113 has a groove 1131 on the side near the cell assembly 100. At least one of the first cell 1111 and the third cell 1113 is located in the groove 1131.

[0066] The groove 1131 and the battery cell 111 (first battery cell 1111 or third battery cell 1113) accommodated within it facilitate further positioning between the bracket 11 and the battery cell assembly 100, thereby simplifying the alignment and connection between the busbar 22 and the battery cell assembly 100. Furthermore, the connecting portion 112 and the limiting portion 113 in the bracket 11 are adapted to two adjacent but staggered battery cells 111 (e.g., first battery cell 1111 and second battery cell 1112). The groove 1131 of the limiting portion 113 can accommodate the first battery cell 1111, while the accommodating space 130 between the two battery cells 111 can accommodate the connecting portion 112. This staggered arrangement allows the bracket 11 as a whole to achieve better positioning with the battery cell assembly 100, further facilitating the connection between the busbar 22 and the battery cell assembly 100. Moreover, the connecting portion 112 is located within the accommodating space, thus fully utilizing the space and avoiding the problem of an excessively large overall battery module volume caused by the connecting portion 112 being located in other spaces.

[0067] In some embodiments, such as Figure 2-7 As shown, the limiting part 113 is located on both sides of the connecting part 112, and the limiting part 113 has two grooves 1131 on the side near the cell assembly 100, with the first cell 1111 and the third cell 1113 respectively located in the two grooves 1131. This arrangement, by limiting the first cell 1111 and the third cell 1113 respectively through the two grooves 1131, enables the bracket 11 to have a better positioning effect. At the same time, the limiting part 113 being located on both sides of the connecting part 112 also enhances the stability of the bracket 11, thereby improving the stability of the cell module.

[0068] In some embodiments, such as Figure 2-7As shown, the inner wall of the limiting part 113 located in the groove is configured to fit snugly against the battery cell 111. That is, the groove 1131 is designed to better accommodate the battery cell 111 (e.g., the first battery cell 1111 or the third battery cell 1113), thereby improving the assembly stability between the bracket 11 and the battery cell 111. In addition, this also facilitates the positioning between the bracket 11 and the battery cell 111, so that the busbar assembly 200 fixed on the bracket assembly 300 and the battery cell assembly 100 can be easily and accurately aligned, thereby improving the assembly yield between the busbar 22 of the busbar assembly 200 and the battery cell assembly 100.

[0069] In some examples, the limiting portion 113 covers a portion of the battery cell 111 along its length. For example, the limiting portion 113 covers half of the battery cell 111 along its length, which helps to save material on the bracket 11 and also helps the battery cell 111 dissipate heat during operation.

[0070] In some embodiments, such as Figure 2-7 As shown, the battery cell assembly 100 has a positive output electrode and a negative output electrode. The bus assembly 200 also includes an output connector 21 (e.g., a high-voltage output connector), which is electrically connected to either the positive or negative output electrode. The connecting portion 112 has a receiving groove 114 on the side away from the battery cell assembly 100, and the output connector 21 is located in this receiving groove 114. By providing a receiving groove 114 on the connecting portion 112 to accommodate the output connector 21, it is beneficial to fix the output connector 21, thereby facilitating the arrangement of the high-voltage line. Simultaneously, since the output connector 21 is located in the receiving groove 114, and the connecting portion 112 is located within the accommodating space, the output connector 21 is at least partially located within the accommodating space, further improving the utilization rate of the accommodating space and avoiding the problem of increased overall battery module space occupation caused by placing the output connector 21 in other spaces.

[0071] In some examples, please refer to Figure 2For the three adjacent cell blocks 10 (i.e., the first cell block 101, the second cell block 102, and the third cell block 103), the negative terminals of the first cell 1111 and the third cell 1113 can jointly serve as the negative output electrode, while the positive terminal of the fourth cell 1115 located at the other end of the second cell block 10 along the first direction X can serve as the positive output electrode; or, the positive terminals of the first cell 1111 and the third cell 1113 can jointly serve as the positive output electrode, while the negative terminal of the fourth cell 1115 can serve as the negative output electrode. In this case, the remaining cells 111 in the three cell blocks 10 are adaptively connected in series and parallel, so that the positive and negative output electrodes can supply power to the electrical equipment after it is connected.

[0072] In some examples, please refer to [link / reference]. Figure 2 In addition to the three adjacent cell rows 10 mentioned above, the cell assembly 100 may also include a fourth cell row 104 located on the side of the third cell row 103 away from the first cell row 101. The fourth cell row 104 is offset from the third cell row 103 and arranged side by side with the second cell row 102. In this case, one end of the fourth cell row 104 in the first direction X has a fifth cell 1116, and the line connecting the fifth cell 1116 and the fourth cell 1115 is parallel to the line connecting the first cell 1111 and the third cell 1113. When the positive electrode of the first cell 1111 and the positive electrode of the third cell 1113 are used together as the positive output electrode, the negative electrode of the fourth cell 1115 and the negative electrode of the fifth cell 1116 can be used together as the negative output electrode; or, when the negative electrode of the first cell 1111 and the negative electrode of the third cell 1113 are used together as the negative output electrode, the positive electrode of the fourth cell 1115 and the positive electrode of the fifth cell 1116 can be used together as the positive output electrode.

[0073] It should be noted that the above examples are only optional configurations of the positive and negative output electrodes, and this disclosure does not limit them. The configuration of the positive and negative output electrodes is related to the specific connection method between all the cells 111 in the cell assembly 100 (e.g., series, parallel, or a combination of series and parallel connections). As long as it can enable power supply to the electrical device, it can be implemented as an optional method of this disclosure.

[0074] like Figure 2 and Figure 6 As shown, the receiving groove 114 faces opposite to the groove 1131. This facilitates the routing of the output end of the output connector 21 for connection to electrical equipment. Furthermore, since the receiving groove 114 exposes at least a portion of the output connector 21, it also facilitates a visual inspection of the wiring of the output connector 21.

[0075] In some embodiments, such as Figure 2-7 As shown, bus 22 includes an output connector 221, through which the output connector 21 is electrically connected to the positive or negative output electrode. Exemplarily, the output connector 221 includes a first connecting piece 1311 and a second connecting piece 1312 connected to each other. The first connecting piece 1311 is electrically connected to the positive or negative output electrode, and the second connecting piece 1312 is electrically connected to the output connector 21. Using the output connector 221, the output connector 21 and the positive (or negative) output electrode located on different planes can be effectively connected, thereby facilitating a stable power supply to the electrical equipment.

[0076] In some embodiments, such as Figure 2-7 As shown, the connecting part 112 is also provided with an opening 115 communicating with the receiving groove 114 on the side near the bus assembly. The output connector 21 is provided with a slot 211 facing the opening 115. The second connecting piece 1312 is inserted into the slot 211 through the opening 115 and electrically connected to the output connector 21, thereby realizing the electrical connection between the output connector 21 and the positive output electrode (or negative output electrode).

[0077] In the specific connection process of the output electrode connector 221 and the output terminal connector 21, the output terminal connector 21 is first placed in the receiving groove 114, and its slot 211 is aligned with the opening 115 of the connecting part 112; then the second connecting piece 1312 of the output electrode connector 221 is inserted into the slot 211, thereby realizing the connection between the output terminal connector 21 and the output electrode connector 221; then the first connecting piece 1311 of the output electrode connector 221 is connected to the positive output electrode (or negative output electrode), thereby finally realizing the electrical connection between the output terminal connector 21 and the positive output electrode (or negative output electrode).

[0078] By inserting the second connecting piece into the slot 211, not only can an electrical connection be established between the output electrode connector 221 and the output terminal connector 21, but also a quick fixation between them can be achieved. This method ensures good overall connection stability, facilitates connection, and allows for easy disassembly of the output electrode connector 221 and the output terminal connector 21.

[0079] In some examples, the first connecting piece 1311 and the second connecting piece 1312 are approximately perpendicular, so that the first connecting piece 1311 will not be affected during the insertion of the second connecting piece 1312 into the slot 211, which helps to ensure the overall stability of the output terminal connector 221.

[0080] In some examples, when the output terminal connector 221 is connected to the negative terminals of two or more cells, the first connecting piece can be linear; when the output terminal connector 221 is connected to the positive terminals of two or more cells, the first connecting piece can be U-shaped, that is, the two ends of the first connecting piece have bent portions to facilitate the connection of the first connecting piece to the positive terminal of the cell.

[0081] In some examples, the second connecting piece 1312 includes a welding part and a plug-in part. The welding part and the plug-in part are approximately perpendicular, and the welding part is arranged parallel to the first connecting piece 1311. This makes it easier to weld the second connecting piece 1312 to the first connecting piece 1311 and improves the connection stability.

[0082] In some embodiments, the first connecting piece is an aluminum sheet, which has good electrical and thermal conductivity and can be well welded to the output electrode of the battery cell 111.

[0083] For example, the first connecting piece can be made of 1060-O state aluminum, which has good electrical and thermal conductivity, corrosion resistance, and good deformability, allowing it to be easily processed into structures of various shapes and specifications, and is easy to weld to the output electrode of the battery cell. For example, the thickness of the first connecting piece is 0.5mm.

[0084] In some examples, the second connecting piece is a copper sheet, which has high conductivity and high hardness, making it easier to insert into the slot 211 multiple times and form an electrical connection with the output connector 21.

[0085] For example, the second connecting piece is made of T2-Y2 copper, a high-purity copper material with good electrical and thermal conductivity and machinability, which is beneficial for the conductivity and heat dissipation of the output electrode connector 221. For example, the thickness of the second connecting piece is 1.5mm.

[0086] In some embodiments, such as Figure 8 As shown, the output end of the output connector 21 is electrically connected to the high-voltage cable 214. The high-voltage cable has advantages such as occupying little space, flexible wiring and convenient operation. At the same time, it is less affected by climate conditions and the surrounding environment, and its transmission performance is stable. The insulation layer included in the cable has fireproof, waterproof, wear-resistant, high temperature and low temperature resistance, etc. Therefore, it has a wide range of applications and is very suitable for the working environment of battery modules.

[0087] In some embodiments, this disclosure also provides an electrical device including the battery module 1000 described above. The electrical device can be a vehicle (e.g., a supercar), a portable device, a laptop computer, a ship, a spacecraft, or an electric toy, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. This disclosure does not impose special limitations on the above-described electrical device. Taking a vehicle as an example, the vehicle may also include a controller and a motor. The controller is used to control the power battery to supply power to the motor, for example, for the power needs of starting, navigating, and driving the vehicle.

[0088] Since the power supply device provided in this disclosure includes the battery module 1000, it can achieve all the technical effects of the battery module 1000 described above, which will not be repeated here.

[0089] The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery module, characterized in that, include: A battery cell assembly includes at least three parallel cell rows, each cell row including a plurality of cells arranged along a first direction, and each cell including an output electrode; A bus assembly includes a busbar connected to the output terminal of each of the at least three cell blocks; as well as A support assembly is configured to fix the bus assembly, the support assembly including at least one support; the bus assembly is disposed on the support. Among them, three adjacent cell blocks constitute a cell block group, and the cell block group has an accommodating space at at least one end in the first direction, and the bracket is at least partially located in the accommodating space; The bracket includes a connecting portion, the busbar assembly is disposed on the connecting portion, the battery cell assembly has a positive output electrode and a negative output electrode, and the busbar assembly further includes an output connector; the connecting portion has a receiving groove on the side away from the battery cell assembly, and the output connector is located in the receiving groove; the busbar includes an output electrode connector, the output electrode connector includes a first connecting piece and a second connecting piece connected to each other, the first connecting piece being electrically connected to the positive output electrode or the negative output electrode; the connecting portion also has an opening communicating with the receiving groove on the side near the busbar assembly, and the output connector has a slot at a position facing the opening, the second connecting piece being inserted into the slot through the opening and electrically connected to the output connector.

2. The battery module according to claim 1, characterized in that, The battery cell array includes a first battery cell array, a second battery cell array, and a third battery cell array. The first battery cell array, the second battery cell array, and the third battery cell array each have a first battery cell, a second battery cell, and a third battery cell at one end located in the first direction, respectively. The second battery cell is recessed inward relative to the first battery cell array and the third battery cell array to form the accommodating space between the first battery cell, the second battery cell, and the third battery cell.

3. The battery module according to claim 2, characterized in that, The bracket further includes a limiting portion located on at least one side of the connecting portion, the limiting portion having a groove on the side near the cell assembly, wherein at least one of the first cell and the third cell is located within the groove.

4. The battery module according to claim 3, characterized in that, The limiting part is located on both sides of the connecting part, and the limiting part has two grooves on the side near the battery cell assembly, with the first battery cell and the third battery cell respectively located in the two grooves.

5. The battery module according to claim 1, characterized in that, The material of the first connecting piece is aluminum; and / or The material of the second connecting piece is copper.

6. The battery module according to claim 1, characterized in that, The material of the first connecting piece is 1060-O state aluminum; and / or The material of the second connecting piece is T2-Y2 copper.

7. The battery module according to any one of claims 1-6, characterized in that, The cell array has two accommodating spaces in the first direction, and the two accommodating spaces are respectively located at both ends of the cell array; the at least one bracket includes two brackets, and the two brackets are respectively at least partially located within the two accommodating spaces.

8. The battery module according to any one of claims 1-6, characterized in that, The cell array has the accommodating space at one end in the first direction, and the at least three cell arrays include at least four cell arrays, wherein the four adjacent cell arrays have two accommodating spaces in the first direction, and the two accommodating spaces are respectively located at both ends of the four adjacent cell arrays; the at least one support includes two supports, and the two supports are respectively at least partially located within the two accommodating spaces.

9. An electrical appliance, characterized in that, Includes the battery module as described in any one of claims 1-8.

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