Battery pack and powered device

Abstract

The application discloses a battery pack and an electric device. The battery pack comprises a shell, a battery cell assembly, a first support and a first busbar. The shell is provided with a first recess and a second recess. The battery cell assembly comprises a plurality of battery cells, each of which comprises a main body part and an electrode terminal. Part of the main body part is located in the second recess. The first support comprises a first receiving part, a first protruding part and a first through hole. The first protruding part extends from the first receiving part. The first through hole penetrates the first receiving part. Part of each main body part is arranged in the first receiving part. At least part of the first protruding part is arranged in the first recess. The first busbar and the main body part are arranged in a first direction. The first busbar is connected to the electrode terminals of at least two battery cells. At least part of the electrode terminals is located in the first through hole when viewed in the first direction. The internal shape of the shell is in conformal cooperation with the battery cell assembly and the first support. This is beneficial to reducing the number of connecting members between the shell and the battery cell assembly and between the shell and the first support, and improving the assembly efficiency of the battery pack.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a battery pack and an electric device. BACKGROUND

[0002] With the vigorous development of the new energy industry, battery packs composed of secondary batteries are applied in various industries, and people's requirements for the preparation of battery packs are also getting higher and higher. In order to improve the anti-shock performance of the battery pack, long screws are usually used inside the battery pack to fix the battery cell assembly, but this fixing method requires more accessories, which seriously affects the assembly efficiency of the battery pack, resulting in the increase of the manufacturing cost of the battery pack. SUMMARY

[0003] In view of the above situation, it is necessary to provide a battery pack which can reduce the number of internal accessories and improve the assembly efficiency.

[0004] Embodiments of the application provide a battery pack, which comprises a shell, a battery cell assembly, a first support and a first bus bar. The shell is provided with a first recess and a second recess, the battery cell assembly comprises a plurality of battery cells, each battery cell comprises a main body part and an electrode terminal, and part of the main body part is located in the second recess. The first support comprises a first receiving part, a first protruding part and a first through hole, the first protruding part extends from the first receiving part along a first direction, and the first through hole penetrates the first receiving part, part of each main body part is arranged in the first receiving part, and at least part of the first protruding part is arranged in the first recess. The first bus bar and the main body part are arranged in the first direction, and the first bus bar is connected to the electrode terminals of at least two battery cells. At least part of the electrode terminals is located in the first through hole when viewed in the first direction.

[0005] In the above battery pack, the battery cell is connected to the first support through part of the main body part located in the first receiving part of the first support, and part of the main body part is also located in the second recess of the shell, and at least part of the first protruding part of the first support is located in the first recess of the shell, so that the internal shape of the shell is matched with the battery cell assembly and the first support, which is beneficial to reduce the number of connecting parts between the shell and the battery cell assembly and between the shell and the first support, and improve the assembly efficiency of the battery pack.

[0006] In some embodiments of the application, the battery pack further comprises a first adhesive, at least part of the first adhesive is located in the first recess and connects the first protruding part and the first recess. By arranging the first adhesive, the stability of the connection between the first support and the shell can be improved, the anti-shock performance of the battery pack can be improved, and the number of connecting parts between the shell and the battery cell assembly and between the shell and the first support can be further reduced, and the assembly efficiency of the battery pack can be improved.

[0007] In some embodiments of the present application, the battery pack further comprises a second support arranged along the first direction with the first support, the second support comprising a second receiving portion, and part of each main body portion is arranged in the second receiving portion. By arranging part of each main body portion in the first receiving portion and part of each main body portion in the second receiving portion, the risk of damage to the main body portion by other structures is reduced, the fixed battery cell is limited, the anti-shock performance of the battery pack is improved, the number of accessories for fixing the battery cell is reduced, and the assembly efficiency of the battery pack is improved.

[0008] In some embodiments of the present application, the shell further comprises a third recess, and the first recess, the second recess, and the third recess are arranged along the first direction. The second support comprises a second protrusion, and at least part of the second protrusion is arranged in the third recess. The third recess can limit the second support, further limit the movement of the battery cell assembly relative to the shell, improve the anti-shock performance of the battery pack, reduce the number of connecting pieces between the shell and the second support, and improve the assembly efficiency of the battery pack.

[0009] In some embodiments of the present application, the number of first recesses is a plurality, and the plurality of first recesses are arranged along the second direction perpendicular to the first direction. The number of first protrusions is a plurality, and the plurality of first protrusions are arranged along the second direction. Each first protrusion is arranged in a first recess. This is conducive to further improving the stability of the first support connected to the shell, improving the anti-shock performance of the battery pack, and further reducing the number of connecting pieces between the shell and the first support, and improving the assembly efficiency of the battery pack.

[0010] In some embodiments of the present application, the number of third recesses is a plurality, and the plurality of third recesses are arranged along the second direction. The number of second protrusions is a plurality, and the plurality of second protrusions are arranged along the second direction. Each second protrusion is arranged in a third recess. This is conducive to further improving the stability of the second support connected to the shell, improving the anti-shock performance of the battery pack, and further reducing the number of connecting pieces between the shell and the second support, and improving the assembly efficiency of the battery pack.

[0011] In some embodiments of the present application, the shell further comprises a plurality of third protrusions arranged along the second direction. Along the second direction, the first recesses and the third protrusions are arranged at intervals, and at least part of the third protrusions are connected to the first support. By connecting the first support to at least part of the third protrusions, the shell supports and limits the first support, which is conducive to improving the stability of the first support connected to the shell, improving the anti-shock performance of the battery pack, and further reducing the number of connecting pieces between the shell and the first support, and improving the assembly efficiency of the battery pack.

[0012] In some embodiments of the present application, the part of the first adhesive is located between the first protrusion and the first recess and connects the first protrusion and the first recess along the third direction, which helps to improve the stability of the first support connecting the shell, improve the anti-vibration performance of the battery pack, and further reduce the number of connecting parts between the shell and the first support, and improve the assembly efficiency of the battery pack. The third direction, the first direction and the second direction are perpendicular to each other.

[0013] In some embodiments of the present application, the first protrusion is provided with a first cavity with an opening, the first cavity is communicated with the first recess through the opening, and the part of the first adhesive is located in the first cavity, which helps to increase the filling amount of the first adhesive, increase the contact area of the first adhesive connecting the first support, further improve the stability of the first support connecting the shell, improve the anti-vibration performance of the battery pack, and further reduce the number of connecting parts between the shell and the first support, and improve the assembly efficiency of the battery pack.

[0014] In some embodiments of the present application, the shell comprises an outer wall and a structural part, the structural part and the outer wall are welded, and the structural part forms the first recess and the second protrusion, which facilitates the processing and manufacturing of the shell and saves the manufacturing cost of the shell.

[0015] In some embodiments of the present application, along the third direction, the cell assembly comprises a side surface away from the first recess; the first support further comprises a first extension part connected with the first receiving part and extending along the first direction, and the first extension part is connected to at least part of the side surface, which helps to improve the protection area of the first support to the cell, reduce the risk of damage to the cell by other structures, and also helps to improve the connection stability between the first support and the cell.

[0016] In some embodiments of the present application, the second support further comprises a second extension part connected with the second receiving part and extending along the opposite direction of the first direction, and the second extension part is connected to at least part of the side surface, which helps to improve the protection area of the second support to the cell, reduce the risk of damage to the cell by other structures, and also helps to improve the connection stability between the second support and the cell.

[0017] In some embodiments of the present application, the first extension part is connected to the second extension part, and the first support and the second support are connected to each other and clamp the cell along the first direction, which helps to reduce the risk of cell shaking, improve the anti-vibration performance of the battery pack, and reduce the number of parts for fixing the cell, and improve the assembly efficiency of the battery pack.

[0018] In some embodiments of the present application, along the third direction, a first gap is formed between the second recess and the main body part. The first gap can be used as an electrical gap to reduce the risk of short circuit of the cell.

[0019] In some embodiments of the present application, the first recess is beyond the second recess in the opposite direction of the third direction. When at least part of the first protrusion is located in the first recess, the area where the first recess and the second recess meet can limit the movement of the first protrusion in the first direction, further reducing the number of connecting members between the shell and the first support, improving the assembly efficiency of the battery pack; at the same time, it is also conducive to storing the first adhesive in the first protrusion, facilitating the connection of the first adhesive to the first protrusion and the first recess.

[0020] In some embodiments of the present application, the battery pack further comprises a second adhesive, at least part of the second adhesive is arranged in the first through hole and connects the first receiving portion and the electrode terminal, which is conducive to improving the stability of the connection of the battery cell to the first support, reducing the risk of movement or rotation of the battery cell relative to the first support, further reducing the number of connecting members between the battery cell and the first support, and improving the assembly efficiency of the battery pack.

[0021] In some embodiments of the present application, the battery pack further comprises a first wire harness, the first wire harness is connected to the first busbar; along the third direction, part of the first wire harness is arranged on the side of the first extension portion away from the main body portion.

[0022] In some embodiments of the present application, along the first direction, the projection of the first busbar and the projection of the first recess are separated, which is conducive to connecting the first busbar and the first support, and improving the assembly efficiency.

[0023] Embodiments of the present application also provide a power consumption device comprising any of the foregoing battery packs.

[0024] In the above power consumption device, the battery cell in the battery pack is connected to the first support through the part of the main body portion located in the first receiving portion of the first support, and the part of the main body portion is also located in the second recess of the shell. At least part of the first protrusion of the first support is located in the first recess of the shell, so that the internal shape of the shell is matched with the battery cell assembly and the first support, which is conducive to reducing the number of connecting members between the shell and the battery cell assembly and between the shell and the first support, improving the shock resistance of the battery pack, improving the assembly efficiency of the battery pack, and saving the assembly cost of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of a battery pack in an embodiment of the present application.

[0026] Figure 2 is an exploded view of a battery pack in an embodiment of the present application.

[0027] Figure 3 is a partial structural schematic diagram of a shell in an embodiment of the present application.

[0028] Figure 4is a structural diagram of a first support in one embodiment of the present application.

[0029] Figure 5 is a cross-sectional view of the battery pack in a direction perpendicular to the first direction in one embodiment of the present application.

[0030] Figure 6 is Figure 5 is a partial enlarged view of the VI region in the structure shown.

[0031] Figure 7 is a structural diagram of a cell in one embodiment of the present application.

[0032] Figure 8 is a structural diagram of a cell in one embodiment of the present application.

[0033] Figure 9 is a cross-sectional view of the battery pack in a direction perpendicular to the first direction in one embodiment of the present application.

[0034] Figure 10 is Figure 9 is a partial enlarged view of the X region in the structure shown.

[0035] Figure 11 is a structural diagram of a second support in one embodiment of the present application.

[0036] Figure 12 is a cross-sectional view of the battery pack in a direction perpendicular to the first direction in one embodiment of the present application.

[0037] Figure 13 is Figure 12 is a partial enlarged view of the XIII region in the structure shown.

[0038] Figure 14 is a partial structural diagram of the battery pack in which a part of the second bus bar is omitted in one embodiment of the present application.

[0039] Figure 15 is a partial structural diagram of the battery pack in which a part of the second bus bar is omitted in one embodiment of the present application.

[0040] Figure 16 is a view of a partial structure of the battery pack in the first direction in one embodiment of the present application.

[0041] Figure 17 is a structural diagram of an electrical device in one embodiment of the present application.

[0042] Main element symbol explanation

[0043] Battery pack 100

[0044] Housing 10

[0045] outer wall 11

[0046] upper wall 111

[0047] lower wall 112

[0048] structural member 12

[0049] first recess 121

[0050] second recess 122

[0051] third recess 123

[0052] third protrusion 124

[0053] fourth protrusion 125

[0054] first gap 13

[0055] battery cell assembly 20

[0056] battery cell 21

[0057] main body 211

[0058] battery cell housing 2111

[0059] side wall 2112

[0060] first end cap 2113

[0061] second end cap 2114

[0062] electrode terminal 212

[0063] first electrode terminal 2121

[0064] second electrode terminal 2122

[0065] first support 31

[0066] first receiving portion 311

[0067] first receiving cavity 3111

[0068] first protrusion 312

[0069] first cavity 3121

[0070] first through hole 313

[0071] first extension 314

[0072] second support 32

[0073] second receiving portion 321

[0074] Second accommodating cavity 3211

[0075] Second convex part 322

[0076] Second cavity 3221

[0077] Second through hole 323

[0078] Second extension 324

[0079] First bus bar 41

[0080] Second bus bar 42

[0081] First adhesive 51

[0082] Third adhesive 53

[0083] Circuit board 60

[0084] First wire harness 71

[0085] Second wire harness 72

[0086] Protective member 80

[0087] First insulating member 91

[0088] Second insulating member 92

[0089] Electric device 200

[0090] First direction X

[0091] Second direction Y

[0092] Third direction Z

[0093] The following detailed description will further describe the present application in combination with the above-mentioned drawings. DETAILED DESCRIPTION

[0094] The technical solutions in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments of the present application.

[0095] It should be noted that when one element is referred to as being "connected", "linked" or "coupled" to another element, it can be directly connected, linked or coupled to the other element, or there can be intervening elements present. When one element is referred to as being "positioned on" another element, it can be directly positioned on the other element, or there can be intervening elements present. In this application, unless expressly specified and limited otherwise, the terms "mount", "connected", "linking", "coupling", and the like, should be interpreted broadly, for example, they can be fixed connection, or detachable connection, or integral connection; they can be mechanical connection, or electrical connection; they can be direct connection, or indirect connection through intervening elements; they can be internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0096] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The description and drawings are to be regarded as illustrative in nature and embodiments of the application will be readily apparent to those skilled in the art, and various changes and modifications can be

[0097] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0098] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. Various embodiments of the application can be combined with each other, if not in conflict.

[0099] It should be noted that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0100] The embodiment of the present application provides a battery pack, which comprises a shell, a cell assembly, a first support and a first bus bar. The shell is provided with a first recess and a second recess, the cell assembly comprises a plurality of cells, each cell comprises a main body part and an electrode terminal, and part of the main body part is located in the second recess. The first support comprises a first receiving part, a first protruding part and a first through hole, the first protruding part extends from the first receiving part along a first direction, and the first through hole penetrates the first receiving part, part of each main body part is arranged in the first receiving part, and at least part of the first protruding part is arranged in the first recess. The first bus bar and the main body part are arranged along the first direction, and the first bus bar is connected with the electrode terminals of at least two cells. At least part of the electrode terminals is located in the first through hole in the first direction.

[0101] In the battery pack, the cell is connected to the first support through part of the main body part in the first receiving part of the first support, and part of the main body part is also located in the second recess of the shell, at least part of the first protruding part of the first support is located in the first recess of the shell, so that the internal shape of the shell is matched with the cell assembly and the first support, which is beneficial to reduce the number of connecting parts between the shell and the cell assembly and between the shell and the first support, and improve the assembly efficiency of the battery pack.

[0102] The embodiment of the present application is further described below with reference to the drawings.

[0103] As shown in the figure, Figures 1 to 6 The embodiment of the present application provides a battery pack 100, which comprises a shell 10, a cell assembly 20, a first support 31 and a first bus bar 41.

[0104] The shell 10 is provided with a first recess 121 and a second recess 122, the cell assembly 20 comprises a plurality of cells 21, each cell 21 comprises a main body part 211 and an electrode terminal 212, and part of the main body part 211 is located in the second recess 122.

[0105] The first support 31 comprises a first receiving part 311, a first protruding part 312 and a first through hole 313, the first protruding part 312 extends from the first receiving part 311 along a first direction X, the first through hole 313 penetrates the first receiving part 311, part of each main body part 211 is arranged in the first receiving part 311, and at least part of the first protruding part 312 is arranged in the first recess 121. The first bus bar 41 and the main body part 211 are arranged along the first direction X, and the first bus bar 41 is connected with the electrode terminals 212 of at least two cells 21. At least part of the electrode terminals 212 is located in the first through hole 313 in the first direction X.

[0106] In the battery pack 100, the cell 21 is connected to the first support 31 through the part of the main body 211 located in the first receiving part 311 of the first support 31, and the part of the main body 211 is located in the second recess 122 of the shell 10, and at least part of the first protrusion 312 of the first support 31 is located in the first recess 121 of the shell 10, so that the internal shape of the shell 10 is matched with the cell assembly 20 and the first support 31, which is beneficial to reduce the number of connecting parts between the shell 10 and the cell assembly 20 and the shell 10 and the first support 31, and improve the assembly efficiency of the battery pack 100.

[0107] In an embodiment, the first protrusion 312 is connected to the first recess 121, and is connected and limited based on the matching of the shell 10 and the first support 31, which is beneficial to improve the stability of the connection of the first support 31 and the shell 10, improve the anti-vibration performance of the battery pack 100, and reduce the number of connecting parts of the first support 31 and the shell 10, and improve the assembly efficiency of the battery pack 100.

[0108] In an embodiment, the first protrusion 312 is connected to the first recess 121, which is beneficial to reduce the number of connecting parts of the first support 31 and the shell 10, and improve the assembly efficiency of the battery pack 100.

[0109] In an embodiment, the first protrusion 312 is indirectly connected to the first recess 121 through other structures, which is beneficial to improve the stability of the connection of the first support 31 and the shell 10, and improve the anti-vibration performance of the battery pack 100.

[0110] In an embodiment, the battery pack 100 further comprises a first adhesive 51, at least part of the first adhesive 51 is located in the first recess 121 and connects the first protrusion 312 and the first recess 121. By arranging the first adhesive 51, it is beneficial to improve the stability of the connection of the first support 31 and the shell 10, improve the anti-vibration performance of the battery pack 100, and further reduce the number of connecting parts between the shell 10 and the cell assembly 20 and the shell 10 and the first support 31, and improve the assembly efficiency of the battery pack 100.

[0111] In an embodiment, the first adhesive 51 is formed by flowing glue connecting the first protrusion 312 and the first recess 121 and then curing, which is beneficial to improve the stability of the connection of the first support 31 and the shell 10, improve the anti-vibration performance of the battery pack 100, and the pouring process of the flowing glue is relatively simple, which is beneficial to improve the assembly efficiency of the battery pack 100.

[0112] In an embodiment, the first recesses 121 are provided in a plurality, and the plurality of first recesses 121 are arranged along a second direction Y perpendicular to the first direction X. The first protrusions 312 are provided in a plurality, and the plurality of first protrusions 312 are arranged along the second direction Y, and each first protrusion 312 is arranged in a first recess 121, which is conducive to further improving the stability of the first support 31 connecting the shell 10, improving the anti-vibration performance of the battery pack 100, and further reducing the number of connecting members between the shell 10 and the first support 31, and improving the assembly efficiency of the battery pack 100.

[0113] In an embodiment, the first protrusion 312 is provided with a first cavity 3121 with an opening, the first cavity 3121 is in communication with the first recess 121 through the opening, and part of the first adhesive 51 is located in the first cavity 3121, which is conducive to increasing the filling amount of the first adhesive 51 and increasing the contact area of the first adhesive 51 connecting the first support 31, further improving the stability of the first support 31 connecting the shell 10, improving the anti-vibration performance of the battery pack 100, and further reducing the number of connecting members between the shell 10 and the first support 31, and improving the assembly efficiency of the battery pack 100.

[0114] In an embodiment, the opening of the first cavity 3121 is oriented in the same direction as the first receiving portion 311, both toward the first direction X, which is conducive to simplifying the processing technology of the first support 31, improving the processing and manufacturing efficiency of the first support 31, and saving the manufacturing cost of the first support 31.

[0115] In an embodiment, the first receiving portion 311 has a first receiving cavity 3111, and the end of the main body portion 211 in the opposite direction of the first direction X is located in the first receiving cavity 3111 and connected to the first receiving portion 311, so that the first receiving portion 311 can limit the displacement of the battery cell 21 in the opposite direction of the first direction, reduce the number of accessories for fixing the battery cell 21, and improve the assembly efficiency of the battery pack 100.

[0116] In an embodiment, along the third direction Z, the battery cell 21 includes a side surface (not shown) away from the first recess 121. The first support 31 further includes a first extension portion 314 connected to the first receiving portion 311 and extending along the first direction X, and the first extension portion 314 is connected to at least part of the side surface of the battery cell 21, which is conducive to improving the protection area of the first support 31 for the battery cell 21, reducing the risk of damage to the battery cell 21 by other structures, and also conducive to improving the connection stability between the first support 31 and the battery cell 21, reducing the number of connecting members between the first support 31 and the battery cell 21, and improving the assembly efficiency of the battery pack 100.

[0117] In an embodiment, the shell 10 is further provided with a plurality of third protrusions 124 arranged along the second direction Y, the third protrusions 124 extending along a third direction Z, the third direction Z being perpendicular to both the first direction X and the second direction Y. Along the second direction Y, the first recesses 121 and the third protrusions 124 are arranged alternately, and at least part of the third protrusions 124 are connected to the first support 31. By connecting the first support 31 through the at least part of the third protrusions 124, the shell 10 supports and limits the first support 31 along the third direction Z, which helps to limit the movement of the first support 31 in the opposite direction of the third direction Z, to improve the stability of the connection between the first support 31 and the shell 10, to improve the anti-vibration performance of the battery pack 100, and to further reduce the number of connecting components between the shell 10 and the first support 31, and to improve the assembly efficiency of the battery pack 100.

[0118] In an embodiment, along the third direction Z, the first protrusions 312 and the first recesses 121 are separated, which helps to reduce the risk that the third protrusions 124 cannot contact the first support 31 due to the contact between the first protrusions 312 and the first recesses 121, thereby affecting the anti-vibration performance.

[0119] In an embodiment, along the third direction Z, part of the first adhesive 51 is located in the gap between the first protrusions 312 and the first recesses 121, and connects the first protrusions 312 and the first recesses 121, which helps to improve the stability of the connection between the first support 31 and the shell 10, to improve the anti-vibration performance of the battery pack 100, and to further reduce the number of connecting components between the shell 10 and the first support 31, and to improve the assembly efficiency of the battery pack 100.

[0120] In an embodiment, the number of the third protrusions 124 is a plurality, and the plurality of third protrusions 124 are arranged along the second direction Y, and each of the third protrusions 124 is connected to the first support 31, which helps to further improve the stability of the connection between the first support 31 and the shell 10, to improve the anti-vibration performance of the battery pack 100, and to further reduce the number of connecting components between the shell 10 and the first support 31, and to improve the assembly efficiency of the battery pack 100.

[0121] In an embodiment, along the second direction Y, the plurality of first recesses 121 and the plurality of third protrusions 124 are arranged alternately, which helps to further improve the stability of the connection between the first support 31 and the shell 10, to improve the anti-vibration performance of the battery pack 100, and to further reduce the number of connecting components between the shell 10 and the first support 31, and to improve the assembly efficiency of the battery pack 100.

[0122] In an embodiment, the first support 31 is an integrally formed structure, which helps to improve the structural strength of the first support 31, to reduce the risk of deformation of the first support 31 damaging the battery cells 21, and to reduce the risk of deformation of the first support 31 causing shaking.

[0123] In an embodiment, the first support 31 is made of plastic material, and is formed by melting and solidifying plastic through an injection molding device, which is conducive to simplifying the manufacturing process of the first support 31, improving the manufacturing efficiency, and saving the manufacturing cost. In addition, it is also conducive to reducing the weight of the first support 31 and reducing the influence of the weight on the battery pack 100. At the same time, it is also conducive to reducing the risk of short circuit of the battery cell 21.

[0124] As shown in FIGS. 1, 2 and 3, in an embodiment, the main body 211 includes a cell housing 2111 and an electrode assembly (not shown) arranged in the cell housing 2111, and the electrode terminal 212 is electrically connected to the electrode assembly. Figure 7 Figure 8 As shown in FIGS. 1, 2 and 3, in an embodiment, the main body 211 includes a cell housing 2111 and an electrode assembly (not shown) arranged in the cell housing 2111, and the electrode terminal 212 is electrically connected to the electrode assembly.

[0125] In an embodiment, the electrode assembly includes a first pole piece, a second pole piece, and a separator (not shown), the separator is arranged between the first pole piece and the second pole piece, and the first pole piece, the separator and the second pole piece are wound to form the electrode assembly.

[0126] In an embodiment, the electrode terminal 212 includes a first electrode terminal 2121 and a second electrode terminal 2122, the first electrode terminal 2121 is connected to the first pole piece, and the second electrode terminal 2122 is connected to the second pole piece. The first electrode terminal 2121 and the second electrode terminal 2122 can be used to connect external devices or structures, so that the battery cell 21 can be charged and discharged.

[0127] In an embodiment, the first electrode terminal 2121 is a positive electrode terminal, the first pole piece is a positive pole piece, the second electrode terminal 2122 is a negative electrode terminal, and the second pole piece is a negative pole piece. In an embodiment, the second electrode terminal 2122 is a positive electrode terminal, the second pole piece is a positive pole piece, the first electrode terminal 2121 is a negative electrode terminal, and the first pole piece is a negative pole piece.

[0128] In an embodiment, the cell housing 2111 includes a side wall 2112, a first end cover 2113 and a second end cover 2114, the first end cover 2113 and the second end cover 2114 are arranged along the first direction X, and the side wall 2112 is located between the first end cover 2113 and the second end cover 2114 and connects the first end cover 2113 and the second end cover 2114. Part of the first electrode terminal 2121 is exposed to the first end cover 2113, and part of the second electrode terminal 2122 is exposed to the second end cover 2114.

[0129] In an embodiment, part of the first electrode terminal 2121 extends to a side of the first end cover 2113 away from the second end cover 2114, which facilitates the connection of the first electrode terminal 2121 to external devices or other structures, and is conducive to improving the assembly efficiency.

[0130] ​In an embodiment, part of the second electrode terminal 2122 extends to the side of the second end cover 2114 away from the first end cover 2113, facilitating the connection of the second electrode terminal 2122 to an external device or other structure, and improving assembly efficiency.

[0131] As shown in Figure 2 , Figure 4 , Figure 7 and Figure 8 , in an embodiment, the first end cover 2113 is located in the first receiving cavity 3111 and connected to the first receiving part 311. By connecting the first end cover 2113 to the first receiving part 311 of the first support 31, the movement of the battery cell 21 in the direction opposite to the first direction X is limited by the first support 31, further reducing the number of accessories for fixing the battery cell 21 and improving the assembly efficiency of the battery pack 100.

[0132] As shown in Figure 2 , Figure 3 , Figure 9 and Figure 10 , in an embodiment, a first gap 13 is formed between the second recess 122 and the main body part 211 along the third direction Z. The first gap 13 can serve as an electrical gap, reducing the risk of short circuit of the battery cell 21. For example, the length of the first gap 13 along the third direction Z is 1-10 mm. Alternatively, the length of the first gap 13 along the third direction Z is 3-7 mm. In an embodiment, an insulating filler is arranged in the first gap 13, further reducing the risk of short circuit of the battery cell 21. Alternatively, the insulating filler includes but is not limited to foam and insulating glue.

[0133] In an embodiment, the first recess 121 exceeds the second recess 122 along the direction opposite to the third direction Z, i.e., the depth of the first recess 121 is greater than the depth of the second recess 122. When at least part of the first protrusion 312 is located in the first recess 121, the area where the first recess 121 and the second recess 122 meet can limit the movement of the first support 31 along the first direction X, further reducing the number of connecting parts between the shell 10 and the first support 31 and improving the assembly efficiency of the battery pack 100. At the same time, it is also conducive to storing the first adhesive 51 in the first protrusion 312, facilitating the connection of the first adhesive 51 to the first protrusion 312 and the first recess 121.

[0134] As shown in Figure 2 , Figure 3 , Figures 11 to 13 , in an embodiment, the battery pack 100 further comprises a second support 32, the second support 32 and the first support 31 are arranged along the first direction X, and the second support 32 comprises a second receiving part 321, and the end of each main body part 211 along the first direction X is arranged in the second receiving part 321.

[0135] By locating the end of each body part 211 in the first direction X in the first receiving part 311 and locating the end in the first direction X in the second receiving part 321, it is beneficial to reduce the risk of the body part 211 being damaged by other structures, and also beneficial to limit the movement of the battery cell 21 in the first direction X and the reverse direction of the first direction X, improve the shock resistance of the battery pack 100, and reduce the number of accessories for fixing the battery cell 21, and improve the assembly efficiency of the battery pack 100.

[0136] In an embodiment, the second receiving part 321 has a second receiving cavity 3211, and the end of the body part 211 in the first direction X is located in the second receiving cavity 3211 and connects the second receiving part 321, so that the second receiving part 321 can limit the displacement of the battery cell 21 in the first direction, reduce the number of accessories for fixing the battery cell 21, and improve the assembly efficiency of the battery pack 100.

[0137] In an embodiment, the second end cover 2114 is located in the second receiving cavity 3211 and connects the second receiving part 321, and the second bracket 32 can limit the displacement of the first battery cell 21 in the first direction X by connecting the second end cover 2114 through the second receiving part 321.

[0138] In an embodiment, the shell 10 further comprises a third recess 123, and the first recess 121, the second recess 122 and the third recess 123 are arranged in sequence in the first direction X.

[0139] The second bracket 32 comprises a second protrusion 322, and at least part of the second protrusion 322 is arranged in the third recess 123. The third recess 123 can limit the movement of the second bracket 32 by accommodating the second protrusion 322, thereby further limiting the movement of the battery cell assembly 20 relative to the shell 10, improving the shock resistance of the battery pack 100, and reducing the number of connecting parts between the shell 10 and the second bracket 32, and improving the assembly efficiency of the battery pack 100.

[0140] In an embodiment, the second protrusion 322 is connected to the third recess 123, and the shell 10 and the second bracket 32 are connected and limited in position on the basis of the profiled cooperation, which is beneficial to improve the stability of the connection between the second bracket 32 and the shell 10, improve the shock resistance of the battery pack 100, and reduce the number of connecting parts between the second bracket 32 and the shell 10, and improve the assembly efficiency of the battery pack 100.

[0141] In an embodiment, the second protrusion 322 is connected to the third recess 123, and the shell 10 and the second bracket 32 are connected and limited in position on the basis of the profiled cooperation, which is beneficial to improve the stability of the connection between the second bracket 32 and the shell 10, improve the shock resistance of the battery pack 100, and reduce the number of connecting parts between the second bracket 32 and the shell 10, and improve the assembly efficiency of the battery pack 100.

[0142] In an embodiment, the second protrusion 322 is indirectly connected with the third recess 123 through other structures, which is conducive to improving the stability of the second support 32 connecting the shell 10 and improving the anti-vibration performance of the battery pack 100.

[0143] In an embodiment, the battery pack 100 further comprises a third adhesive 53, at least part of the third adhesive 53 is located in the third recess 123 and connects the second protrusion 322 and the third recess 123. By arranging the third adhesive 53, it is conducive to improving the stability of the second support 32 connecting the shell 10 and improving the anti-vibration performance of the battery pack 100. At the same time, the number of connecting members between the shell 10 and the cell assembly 20 and between the shell 10 and the second support 32 can be further reduced, and the assembly efficiency of the battery pack 100 is improved.

[0144] In an embodiment, the third adhesive 53 is formed by flowing glue connecting the second protrusion 322 and the third recess 123 and then curing, which is conducive to improving the stability of the second support 32 connecting the shell 10 and improving the anti-vibration performance of the battery pack 100. Moreover, the pouring process of the flowing glue is relatively simple, which is conducive to improving the assembly efficiency of the battery pack 100.

[0145] In an embodiment, the number of the third recesses 123 is multiple, and the multiple third recesses 123 are arranged along the second direction Y. The number of the second protrusions 322 is multiple, and the multiple second protrusions 322 are arranged along the second direction Y. Each second protrusion 322 is arranged in one third recess 123, which is conducive to further improving the stability of the second support 32 connecting the shell 10 and improving the anti-vibration performance of the battery pack 100. Moreover, the number of connecting members between the shell 10 and the second support 32 can be further reduced, and the assembly efficiency of the battery pack 100 is improved.

[0146] In an embodiment, the second protrusion 322 is provided with a second cavity 3221 with an opening, the second cavity 3221 communicates with the third recess 123 through the opening, and part of the third adhesive 53 is located in the second cavity 3221. This is conducive to increasing the filling amount of the third adhesive 53 and increasing the contact area of the third adhesive 53 connecting the second support 32. Moreover, the stability of the second support 32 connecting the shell 10 is further improved, the anti-vibration performance of the battery pack 100 is improved, the number of connecting members between the shell 10 and the second support 32 is further reduced, and the assembly efficiency of the battery pack 100 is improved.

[0147] In an embodiment, the opening of the second cavity 3221 is oriented in the same direction as the second receiving portion 321, that is, both are oriented in the opposite direction of the first direction X. This is conducive to simplifying the processing process of the second support 32, improving the processing and manufacturing efficiency of the second support 32, and saving the manufacturing cost of the second support 32.

[0148] In an embodiment, the second support 32 further comprises a second extending part 324 connected with the second receiving part 321 and extending in the opposite direction of the first direction X, the second extending part 324 is connected with the part of the side surface of the battery cell 21, which is conducive to improving the protection area of the second support 32 to the battery cell 21, reducing the risk of the battery cell 21 being damaged by other structures, and also conducive to improving the connection stability between the second support 32 and the battery cell 21.

[0149] In an embodiment, the first extending part 314 is connected with the second extending part 324, and the first support 31 and the second support 32 are connected with each other and clamp the battery cell 21 along the first direction X, which is conducive to reducing the risk of the battery cell 21 shaking, improving the shock resistance of the battery pack 100, reducing the number of accessories for fixing the battery cell 21, and improving the assembly efficiency of the battery pack 100.

[0150] In an embodiment, the battery pack 100 further comprises a fourth adhesive (not shown in the figure), which is used to bond the first extending part 314 and the second extending part 324, which is conducive to improving the connection stability between the first support 31 and the second support 32, further reducing the risk of the battery cell 21 shaking, improving the shock resistance of the battery pack 100, reducing the number of accessories for fixing the battery cell 21, and improving the assembly efficiency of the battery pack 100.

[0151] In an embodiment, the shell 10 is further provided with a plurality of fourth protrusions 125 arranged along the second direction Y, and the fourth protrusions 125 extend along the third direction Z. Along the second direction Y, the third recesses 123 and the fourth protrusions 125 are arranged at intervals, and at least part of the fourth protrusions 125 are connected with the second support 32. By connecting the second support 32 with at least part of the fourth protrusions 125, the shell 10 supports and limits the second support 32 along the third direction Z, which is conducive to limiting the movement of the second support 32 in the opposite direction of the third direction Z, improving the stability of the connection between the second support 32 and the shell 10, improving the shock resistance of the battery pack 100, and further reducing the number of connecting parts between the shell 10 and the second support 32, and improving the assembly efficiency of the battery pack 100.

[0152] In an embodiment, the third protrusions 124 and the fourth protrusions 125 are connected with each other and both extend along the first direction X, which is conducive to improving the stability of the connection between the first support 31 and the second support 32 and the shell 10.

[0153] In an embodiment, along the third direction Z, the second protrusions 322 and the third recesses 123 are separated, which is conducive to reducing the risk that the fourth protrusions 125 cannot contact the second support 32 due to the contact between the second protrusions 322 and the third recesses 123, thereby affecting the shock resistance.

[0154] In one embodiment, along the third direction Z, a portion of the third adhesive 53 is located in the gap between the second protrusion 322 and the third recess 123, and connects the second protrusion 322 and the third recess 123. This is beneficial to improve the stability of the second bracket 32 ​​connected to the housing 10, improve the shock resistance of the battery pack 100, and further reduce the number of connectors between the housing 10 and the second bracket 32, thereby improving the assembly efficiency of the battery pack 100.

[0155] In one embodiment, there are multiple fourth protrusions 125, which are arranged along the second direction Y. Each fourth protrusion 125 is connected to the second bracket 32, which helps to further improve the stability of the second bracket 32 ​​connected to the housing 10, improve the shock resistance of the battery pack 100, and further reduce the number of connecting parts between the housing 10 and the second bracket 32, thereby improving the assembly efficiency of the battery pack 100.

[0156] In one embodiment, a plurality of third recesses 123 and a plurality of fourth protrusions 125 are arranged at intervals along the second direction Y, which is beneficial to further improve the stability of the second bracket 32 ​​connected to the housing 10, improve the shock resistance of the battery pack 100, and further reduce the number of connectors between the housing 10 and the second bracket 32, thereby improving the assembly efficiency of the battery pack 100.

[0157] In one embodiment, the second support 32 is an integrally formed structure, which is beneficial to improve the structural strength of the second support 32, reduce the risk of the second support 32 deforming and damaging the battery cell 21, and reduce the risk of the second support 32 deforming and shaking.

[0158] In one embodiment, the second bracket 32 ​​is made of plastic, which is formed by melting and solidifying the plastic using injection molding equipment. This simplifies the manufacturing process of the second bracket 32, improves its manufacturing efficiency, and saves its manufacturing cost. Furthermore, it helps to reduce the weight of the second bracket 32 ​​and reduce its impact on the battery pack 100. At the same time, it also helps to reduce the risk of battery short circuit.

[0159] like Figure 2 As shown, in one embodiment, there are multiple battery cell assemblies 20, which are arranged and electrically connected along the first direction X, which is beneficial to increasing the voltage and capacity of the battery pack 100.

[0160] In one embodiment, a plurality of cells 21 in the cell assembly 20 are stacked along a second direction Y and / or a third direction Z, and the plurality of cells 21 are connected in series and / or in parallel.

[0161] In one embodiment, multiple battery cells 21 are connected in series. In another embodiment, multiple battery cells 21 are connected in parallel. In yet another embodiment, multiple battery cells 21 are connected using a combination of series and parallel connections.

[0162] As an example, the following further describes the parallel connection of the plurality of battery cells 21 in the battery cell assembly 20.

[0163] In an embodiment, the first electrode terminals 2121 of the plurality of battery cells 21 are located on the same side of the battery cell assembly 20 and at the end of the battery cell assembly 20 in the opposite direction of the first direction X, and the second electrode terminals 2122 of the plurality of battery cells 21 are located at the end of the battery cell assembly 20 in the first direction X.

[0164] In an embodiment, the battery pack 100 further comprises a second adhesive (not shown in the figure), at least part of the second adhesive is arranged in the first through hole 313 and connects the first receiving portion 311 and the first electrode terminal 2121, which is conducive to improving the stability of the connection of the battery cell 21 to the first support 31, reducing the risk of movement or rotation of the battery cell 21 relative to the first support 31, further reducing the number of connecting members between the battery cell 21 and the first support 31, and improving the assembly efficiency of the battery pack 100.

[0165] In an embodiment, the first busbar 41 connects the first electrode terminals 2121 of the plurality of battery cells 21, so that the plurality of battery cells 21 are connected in parallel. In an embodiment, the first busbar 41 is welded to the first electrode terminal 2121, which is conducive to reducing the risk of connection failure between the first busbar 41 and the first electrode terminal 2121.

[0166] In an embodiment, the part of the first electrode terminal 2121 that protrudes out of the first end cover 2113 is located inside the first through hole 313, and at least part of the first busbar 41 is located inside the first through hole 313 and connected to the first electrode terminal 2121 inside the first through hole 313. The first through hole 313 can limit the first busbar 41, reduce the number of connecting members between the first busbar 41 and the first support 31, and improve the assembly efficiency of the battery pack 100.

[0167] In an embodiment, the second adhesive also connects the first busbar 41 and the first receiving portion 311, which is conducive to further improving the stability of the connection of the first busbar 41 to the first support 31, improving the shock resistance of the battery pack 100, and reducing the number of connecting members between the first busbar 41 and the first support 31, and improving the assembly efficiency of the battery pack 100.

[0168] In an embodiment, in the opposite direction of the first direction X, part of the first electrode terminal 2121 protrudes out of the first through hole 313 and is exposed on the side of the first support 31 away from the second support 32, which facilitates the connection of the first busbar 41 to the first electrode terminal 2121 and improves the assembly efficiency of the battery pack 100.

[0169] As Figure 14As shown, in one embodiment, the second bracket 32 ​​further includes a second through hole 323, and a portion of the second electrode terminal 2122 is located within the second through hole 323.

[0170] In one embodiment, the battery pack 100 further includes a fifth adhesive member (not shown), at least a portion of which is disposed in the second through hole 323 and connects the second receiving portion 321 and the second electrode terminal 2122. This helps to improve the stability of the connection between the battery cell 21 and the second bracket 32, reduces the risk of the battery cell 21 moving or rotating relative to the second bracket 32, further reduces the number of connectors between the battery cell 21 and the second bracket 32, and improves the assembly efficiency of the battery pack 100.

[0171] In one embodiment, the second bus 42 connects to the second electrode terminals 2122 of the plurality of battery cells 21, thereby connecting the plurality of battery cells 21 in parallel. In another embodiment, the second bus 42 is welded to the second electrode terminals 2122, which helps to reduce the risk of connection failure between the second bus 42 and the second electrode terminals 2122.

[0172] In one embodiment, the portion of the second electrode terminal 2122 extending out of the second end cap 2114 is located inside the second through hole 323, and at least a portion of the second busbar 42 is located within the second through hole 323, connecting the second electrode terminal 2122 within the second through hole 323. The second through hole 323 can limit the second busbar 42, reducing the number of connectors between the second busbar 42 and the second bracket 32, and improving the assembly efficiency of the battery pack 100.

[0173] In one embodiment, the fifth adhesive member also connects the second busbar 42 and the second receiving portion 321, which helps to further improve the stability of the connection between the second busbar 42 and the second bracket 32, improve the shock resistance of the battery pack 100, reduce the number of connectors between the second busbar 42 and the second bracket 32, and improve the assembly efficiency of the battery pack 100.

[0174] In one embodiment, along the first direction X, a portion of the second electrode terminal 2122 extends out of the second through hole 323 and is exposed on the side of the second bracket 32 ​​away from the first bracket 31, which facilitates the connection of the second busbar 42 to the second electrode terminal 2122 and helps to improve the assembly efficiency of the battery pack 100.

[0175] like Figures 1 to 3 As shown, in one embodiment, the housing 10 includes an outer wall 11 and a structural member 12, which are welded together. The structural member 12 forms a first recess 121 and a second protrusion 322. Designing the housing 10 as a separate unit simplifies the manufacturing process, improves manufacturing efficiency, and reduces manufacturing costs.

[0176] In an embodiment, the outer wall 11 comprises an upper wall 111 and a lower wall 112, the structural member 12 is welded to the lower wall 112, and the upper wall 111 and the lower wall 112 are connected to form a space for accommodating the battery cell assembly 20, the first support 31 and the first bus bar 41.

[0177] In an embodiment, the battery pack 100 further comprises a circuit board 60 arranged in the housing 10 and electrically connected to the battery cell assembly 20, and the circuit board 60 is capable of controlling the charging and discharging of the battery cell assembly 20.

[0178] In an embodiment, the circuit board 60 comprises a BMS (Battery Management System, BMS for short) assembly, and the BMS assembly comprises a plurality of electronic components capable of realizing data acquisition, control, protection, communication, power calculation, signal transmission and power transmission of the battery cell 21.

[0179] In an embodiment, the battery pack 100 further comprises a first wire harness 71 connecting the first bus bar 41 and the circuit board 60, so that the battery cell 21 is electrically connected to the circuit board 60.

[0180] In an embodiment, part of the first wire harness 71 is arranged on one side of the first receiving portion 311 away from the main body portion 211 in the opposite direction of the first direction X and connected to the first bus bar 41, and part of the first wire harness 71 is arranged on one side of the first extension portion 314 away from the main body portion 211 in the third direction Z.

[0181] In an embodiment, the fourth adhesive connects the first wire harness 71 and the first support 31, which is conducive to limiting and fixing the first wire harness 71, reduces the number of accessories for fixing the first wire harness 71, and improves the assembly efficiency of the battery pack 100.

[0182] In an embodiment, the number of the first bus bars 41 is multiple, and the multiple first bus bars 41 are arranged in the first direction X and connected to the first electrode terminal 2121 of different battery cells 21.

[0183] As shown in FIG. 1, Figure 14 In an embodiment, the battery pack 100 further comprises a second wire harness 72 connecting the second bus bar 42 and the circuit board 60, so that the battery cell 21 is electrically connected to the circuit board 60.

[0184] In an embodiment, part of the second wire harness 72 is arranged on one side of the second receiving portion 321 away from the main body portion 211 in the first direction X and connected to the second bus bar 42, and part of the second wire harness 72 is arranged on one side of the second extension portion 324 away from the main body portion 211 in the third direction Z.

[0185] In one embodiment, the fourth adhesive member connects the second wiring harness 72 and the second bracket 32, which helps to limit and fix the second wiring harness 72, reduce the number of accessories for fixing the second wiring harness 72, and improve the assembly efficiency of the battery pack 100.

[0186] In one embodiment, there are multiple second busbars 42, which are arranged along the first direction X and connected to the second electrode terminals 2122 of different cells 21.

[0187] In one embodiment, the battery pack 100 further includes a protective member 80 connected to the first support 31 and the second support 32. The protective member 80 provides protection, reducing the risk of damage to the first support 31 and the second support 32 from other structures.

[0188] In one embodiment, along the third direction Z, the first bracket 31, the first wire harness 71 and the protective member 80 are arranged in sequence. A portion of the first wire harness 71 is located between the first bracket 31 and the protective member 80. The protective member 80 can protect and limit the first wire harness 71, reduce the risk of the first wire harness 71 being damaged by other structures, and reduce the risk of the first wire harness 71 being displaced.

[0189] In one embodiment, along the third direction Z, the second bracket 32, the second wire harness 72 and the protective member 80 are arranged in sequence. Part of the second wire harness 72 is located between the second bracket 32 ​​and the protective member 80. The protective member 80 can protect and limit the second wire harness 72, reduce the risk of the second wire harness 72 being damaged by other structures, and reduce the risk of the second wire harness 72 being displaced.

[0190] In one embodiment, the protective component 80 is foam, which helps to save the manufacturing cost of the battery pack 100 and also helps to reduce the weight of the battery pack 100.

[0191] like Figure 2 and Figure 15 As shown, in one embodiment, the battery pack 100 further includes a first insulating member 91, which is disposed on the side of the first busbar 41 away from the battery cell 21 and connected to the first bracket 31. The first insulating member 91 can provide insulation protection, reduce the risk of short circuit between the first busbar 41 and the housing 10, and also help reduce the risk of damage to the first busbar 41 by other structures.

[0192] In one embodiment, the first insulating member 91 includes a first heating element (not shown), which is disposed within the first insulating member 91. The first heating element is configured to heat the first busbar 41 to regulate the temperature of the first busbar 41 and improve its current carrying capacity. In one embodiment, the first heating element is electrically connected to a circuit board 60, which provides electrical power to enable it to generate heat.

[0193] In one embodiment, the battery pack 100 further includes a second insulating member 92, which is disposed on the side of the second busbar 42 away from the battery cell 21 and connected to the second bracket 32. The second insulating member 92 can provide insulation protection, reduce the risk of short circuit between the second busbar 42 and the housing 10, and also help reduce the risk of damage to the second busbar 42 by other structures.

[0194] In one embodiment, the second insulating member 92 includes a second heating element (not shown), which is disposed within the second insulating member 92. The second heating element is configured to heat the second busbar 42 to regulate the temperature of the second busbar 42 and improve its current carrying capacity. In one embodiment, the second heating element is electrically connected to a circuit board 60, which provides electrical power to enable it to generate heat.

[0195] like Figure 16 As shown, in one embodiment, along the first direction X, the projection of the first busbar 41 and the projection of the first recess 121 are separate, which helps to reduce the risk of interference between the first busbar 41 and the structural member 12 during assembly.

[0196] In one embodiment, along the first direction X, the projection of the second busbar 42 and the projection of the third recess 123 are separate (not shown), which helps to reduce the risk of interference between the second busbar 42 and the structural member 12 during assembly.

[0197] In summary, in the battery pack 100 of this application, the battery cell 21 is connected to the first support 31 via a portion of the main body 211 located in the first receiving portion 311 of the first support 31, and a portion of the main body 211 is also located within the second recess 122 of the housing 10. At least a portion of the first protrusion 312 of the first support 31 is located within the first recess 121 of the housing 10, so that the internal shape of the housing 10 conforms to the shape of the battery cell assembly 20 and the first support 31, which helps to reduce the number of connecting parts between the housing 10 and the battery cell assembly 20 and between the housing 10 and the first support 31, improves the assembly efficiency of the battery pack 100, and saves the assembly cost of the battery pack 100.

[0198] like Figure 17 As shown, embodiments of this application also provide an electrical device 200, including the battery pack 100 of any of the foregoing.

[0199] In the above power equipment 200, the battery cell 21 in the battery pack 100 is connected to the first support 31 by being located in the first receiving portion 311 of the first support 31 and by being located in the second recess 122 of the shell 10, and at least part of the first protrusion 312 of the first support 31 is located in the first recess 121 of the shell 10, so that the internal shape of the shell 10 is matched with the battery cell assembly 20 and the first support 31, which is beneficial to reduce the number of connecting parts between the shell 10 and the battery cell assembly 20 and between the shell 10 and the first support 31, improve the assembly efficiency of the battery pack 100, save the assembly cost of the battery pack 100, and reduce the influence of the assembly cost of the battery pack 100 on the power equipment 200.

[0200] In an embodiment, the power equipment 200 includes, but is not limited to, any one of a drone, an electric scooter, an electric tool, and a robot.

[0201] In addition, those skilled in the art can make other changes within the spirit of the present application, and of course, these changes made according to the spirit of the present application should be included in the scope disclosed by the present application.

Claims

1. A battery pack, characterized by, The battery pack comprises: a housing, provided with a first recess and a second recess arranged along a first direction; a cell assembly, comprising a plurality of cells, each of the cells comprising a main body and an electrode terminal, a portion of the main body being located in the second recess; a first support, comprising a first receiving portion, a first protrusion and a first through hole, the first protrusion extending from the first receiving portion along a direction perpendicular to the first direction, the first through hole penetrating the first receiving portion along the first direction, a portion of each of the main bodies being arranged in the first receiving portion, at least a portion of the first protrusion being arranged in the first recess; a first busbar, the first busbar and the main bodies being arranged along the first direction, the first busbar connecting electrode terminals of at least two of the cells; at least a portion of the electrode terminals is located in the first through hole as viewed along the first direction.

2. The battery pack of claim 1, wherein, The battery pack further comprises a first adhesive, at least a portion of the first adhesive being located in the first recess and connecting the first protrusion and the first recess.

3. The battery pack of claim 1, wherein, The housing is further provided with a third recess, the first recess, the second recess and the third recess being arranged along the first direction in sequence; The battery pack further comprises a second support, the second support and the first support being arranged along the first direction, the second support comprising a second receiving portion, a portion of each of the main bodies being arranged in the second receiving portion, the second support comprising a second protrusion, at least a portion of the second protrusion being arranged in the third recess.

4. The battery pack of claim 2, wherein: a plurality of the first recesses are arranged along a second direction, the second direction being perpendicular to the first direction; a plurality of the first protrusions are arranged along the second direction, each of the first protrusions being arranged in one of the first recesses.

5. The battery pack of claim 4, wherein, The housing is further provided with a plurality of third protrusions arranged along the second direction, the first recesses and the third protrusions being arranged in intervals along the second direction, at least a portion of the third protrusions being connected to the first support; a portion of the first adhesive is located between the first protrusion and the first recess and connects the first protrusion and the first recess along a third direction, the third direction, the first direction and the second direction being perpendicular to each other.

6. The battery pack of claim 2, wherein, The first protrusion is provided with a first cavity with an opening, the first cavity being in communication with the first recess through the opening, a portion of the first adhesive being located in the first cavity.

7. The battery pack of claim 3, wherein, The housing comprises an outer wall and a structural member, the structural member and the outer wall being weldedly connected, the structural member forming the first recess and the second protrusion.

8. The battery pack of claim 3, wherein: the cell assembly comprises a side surface away from the first recess along a third direction, the third direction being perpendicular to the first direction; the first support further comprises a first extension portion, the first extension portion being connected to the first receiving portion and extending along the first direction, the first extension portion being connected to at least a portion of the side surface; The second support further includes a second extension portion connected to the second receiving portion and extending in a direction opposite to the first direction, the second extension portion being connected to at least a portion of the side surface; The first extension portion is connected to the second extension portion.

9. The battery pack of claim 5, wherein, In the third direction, a first gap is formed between the second recess portion and the main body portion.

10. The battery pack of claim 9, wherein, In a direction opposite to the third direction, the first recess portion is beyond the second recess portion.

11. The battery pack of claim 1, wherein, The battery pack further includes a second adhesive member, at least a portion of the second adhesive member being provided in the first through-hole and connecting the first receiving portion and the electrode terminal.

12. The battery pack of claim 8, wherein, The battery pack further includes a first wire harness, the first wire harness connecting the first bus bar; In the third direction, a portion of the first wire harness is provided on a side of the first extension portion away from the main body portion.

13. The battery pack of claim 1, wherein, In the first direction, a projection of the first bus bar and a projection of the first recess portion are apart from each other.

14. An electrical device, characterized by A battery pack including any one of the battery packs according to claims 1 to 13.

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