A battery pack

Abstract

This utility model relates to the field of battery technology and discloses a battery pack, including a housing, a battery pack, a fixing bracket, a busbar, and a wiring harness. The housing includes a first base plate and a side beam, which form a receiving cavity. The fixing bracket includes a mounting component, a first mounting component, and a second mounting component. The mounting component is connected to the side beam. The first mounting component is connected to the mounting component and disposed between the battery pack and the side beam, and has a first receiving space. The second mounting component is connected to the first mounting component and has a second receiving space. Part of the busbar is housed in the first receiving space. Part of the wiring harness is housed in the second receiving space. By providing the first receiving space and the second receiving space in the first and second mounting components respectively, the busbar and wiring harness can be integrated and arranged in a smaller space between the battery pack and the side beam, reducing the space occupied by the busbar and wiring harness in the internal space of the battery pack and improving the energy density of the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack. Background Technology

[0002] Current battery packs typically employ an independent structure where the busbars and wiring harnesses are fixed in different locations. This means that the two are installed in different areas of the battery pack using separate fixing components. This separate arrangement results in the busbars and wiring harnesses occupying a significant amount of internal space in the battery pack, limiting the pack's structural compactness and hindering the improvement of its energy density. Utility Model Content

[0003] Aimed at at least in solving one of the technical problems existing in the prior art, this utility model aims to provide a battery pack that reduces the space occupied by busbars and wiring harnesses in the internal space of the battery pack, which helps to improve the structural compactness of the battery pack and is conducive to improving the energy density of the battery pack.

[0004] To achieve the above objectives, this utility model provides a battery pack having a first direction and a second direction perpendicular to each other. The battery pack includes a housing, a battery pack, a fixing bracket, a busbar, and a wiring harness. The housing includes a first base plate and a side beam, the first base plate and the side beam being connected to form a receiving cavity. The battery pack is disposed within the receiving cavity, and along the first direction, the battery pack and the side beam are spaced apart. The fixing bracket is at least partially located within the receiving cavity, and the fixing bracket includes a mounting member, a first mounting part, and a second mounting part. The mounting member is connected to the side beam. The first mounting part is connected to the mounting member and disposed between the battery pack and the side beam, and the first mounting part has a first receiving space. Along the second direction, the second mounting part is connected to one end of the first mounting part; the second mounting part has a second receiving space. The busbar is connected to the first mounting part, and a portion of the busbar is contained within the first receiving space. The wiring harness is connected to the second mounting part, and a portion of the wiring harness is contained within the second receiving space.

[0005] In some embodiments, the first assembly includes a first side plate, a second bottom plate, and a second side plate. The first side plate is connected to one end of the second bottom plate in the first direction, and the second side plate is connected to one end of the second bottom plate away from the first side plate in the first direction. The second side plate is disposed opposite to the first side plate, and the mounting member is connected to the side of the second side plate away from the first side plate. The first side plate, the second bottom plate, and the second side plate form a first receiving space, and the busbar passes through the first receiving space.

[0006] In some embodiments, the first assembly further includes a first limiting part and a second limiting part, the first limiting part being connected to the first side plate and disposed within the first accommodating space, and the second limiting part being connected to the second side plate and disposed within the first accommodating space, the first limiting part and the second limiting part being disposed opposite to each other; along the second direction, the first limiting part and the second limiting part are both located on the side of the busbar away from the second bottom plate.

[0007] In some embodiments, the first limiting portion and the second limiting portion are spaced apart along the first direction, and a third opening is formed between the first limiting portion and the second limiting portion, and the busbar is configured to be able to pass through the third opening along the second direction.

[0008] In some embodiments, the busbar has a bottom surface and a top surface disposed opposite to each other in the second direction, the bottom surface contacting the second base plate; the first limiting portion has a first limiting surface in the second direction that contacts the top surface, and the second limiting portion has a second limiting surface in the second direction that contacts the top surface.

[0009] In some embodiments, the second mounting accessory includes a first mounting plate, a second mounting plate, and a connecting strap. The first mounting plate is connected to the end of the first side plate away from the second base plate in the second direction. The first mounting plate has a through first hole. The second mounting plate is connected to the end of the second side plate away from the second base plate in the second direction and is disposed opposite to the first mounting plate. The second mounting plate has a through second hole. The connecting strap passes through the first hole and the second hole. The first mounting plate, the second mounting plate, and the connecting strap form the second receiving space. The wire harness passes through the second receiving space.

[0010] In some embodiments, the mounting component includes a snap-fit ​​head, one end of which is connected to a first mounting component; the side beam has a cavity inside, and the side beam includes a first sidewall and a second sidewall disposed opposite to each other, the first sidewall and the second sidewall being used to enclose the cavity; the first sidewall has a through hole communicating with the cavity and the receiving cavity, and the snap-fit ​​head passes through the through hole and snaps into the first sidewall.

[0011] In some embodiments, the snap-fit ​​head includes a main body, a connecting portion, and at least two elastic claws. One end of the main body is connected to the connecting portion, and the end of the connecting portion away from the main body is connected to the first fitting. The elastic claws are connected to the end of the main body away from the connecting portion. The elastic claws are inclined relative to the main body. A first opening is formed between the end of the elastic claw away from the main body and the main body. The first sidewall includes an inner wall surface near the cavity. The end of the elastic claw away from the main body abuts against the inner wall surface. At least a portion of the elastic claws is located within the cavity.

[0012] In some embodiments, the snap-fit ​​head further includes an elastic piece, one end of which is connected to the connecting portion and the other end extends away from the connecting portion. The elastic piece is inclined relative to the main body portion, and a second opening is formed between the end of the elastic piece away from the connecting portion and the main body portion. The first sidewall also includes an outer wall surface away from the cavity, which is disposed opposite to the inner wall surface, and the elastic piece abuts against the outer wall surface.

[0013] In some embodiments, the battery pack further includes an insulating element, which is at least partially disposed between the bus and the wiring harness.

[0014] Compared with the prior art, the battery pack of this utility model has the following advantages: By setting a fixed bracket integrating mounting parts, a first assembly part, and a second assembly part between the battery pack and the side beam, and by setting a first accommodating space for accommodating the busbar and a second accommodating space for accommodating the wiring harness in the first assembly part and the second assembly part respectively, the busbar and the wiring harness can be uniformly integrated and installed on the fixed bracket; by connecting the second assembly part to one end of the first assembly part in the second direction, the first accommodating space and the second accommodating space can be distributed along the second direction, so that the busbar and at least part of the wiring harness can be integrated and arranged in the smaller space between the battery pack and the side beam along the second direction, reducing the occupation of the internal space of the battery pack by the busbar and the wiring harness, which helps to improve the structural compactness of the battery pack and is conducive to improving the energy density of the battery pack. Moreover, compared with the structure of fixing the busbar and the wiring harness in different positions, the integrated arrangement of the busbar and the wiring harness along the second direction in this application helps to improve the assembly efficiency of the battery pack. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a battery pack provided in an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 Enlarged view of point A;

[0017] Figure 3This is a schematic diagram of the structure of a battery pack after omitting the battery, according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the fixed bracket provided in this embodiment of the present invention when it is assembled with the frame;

[0019] Figure 5 This is a cross-sectional view of the fixed bracket provided in this embodiment of the present invention when it is assembled with the frame;

[0020] Figure 6 This is a schematic diagram of the first structure of the fixed bracket provided in this embodiment of the utility model;

[0021] Figure 7 This is a schematic diagram of the second structure of the fixed bracket provided in this embodiment of the utility model;

[0022] Figure 8 This is a top view of the fixed bracket provided in an embodiment of the present utility model;

[0023] Figure 9 This is a side view of the fixed bracket provided in an embodiment of the present invention.

[0024] In the diagram, 1 is the box body; 10 is the receiving cavity; 11 is the first bottom plate; 12 is the side beam; 13 is the intermediate beam; 101 is the subspace; 120 is the cavity; 121 is the first side beam; 122 is the second side beam; 123 is the third side beam; 124 is the fourth side beam; 1201 is the first side wall; 1202 is the second side wall; 12011 is the through hole; 12012 is the inner wall surface; and 12013 is the outer wall surface.

[0025] 2. Battery pack; 21. Individual cell;

[0026] 3. Fixed bracket; 31. Mounting component; 32. First assembly; 33. Second assembly; 311. Buckle head; 320. First receiving space; 321. First side plate; 322. Second base plate; 323. Second side plate; 324. First limiting part; 325. Second limiting part; 326. Third opening; 330. Second receiving space; 331. First mounting plate; 332. Second mounting plate; 333. Connecting strap; 3111. Main body 3112. Connecting part; 3113. Elastic claw; 3114. Elastic sheet; 3241. First side surface; 3242. First limiting surface; 3243. Second side surface; 3244. First inclined surface; 3251. Third side surface; 3252. Second limiting surface; 3253. Fourth side surface; 3254. Second inclined surface; 3311. First through hole; 3321. Second through hole; 31131. First opening; 31141. Second opening;

[0027] 4. Busbar; 41. Bottom surface; 42. Top surface;

[0028] 5. Wiring harness;

[0029] 6. Insulating components;

[0030] X, first direction; Z, second direction; Y, third direction. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0032] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this application, "parallel" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is -1° to 1°. "Perpendicular" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is 89° to 91°. Equal distances, equal angles, or equal areas refer to a state in which the tolerance range is -1% to 1%.

[0037] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0038] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0039] like Figures 1 to 9 As shown, a preferred embodiment of the present invention is a battery pack, wherein the battery has a first direction X, a second direction Z and a third direction Y that are perpendicular to each other, and the battery pack includes a housing 1, a battery pack 2, a fixing bracket 3, a busbar 4 and a wiring harness 5.

[0040] The housing 1 includes a first base plate 11 and a side beam 12, which are connected to form a receiving cavity 10. The battery pack 2 is disposed in the receiving cavity 10, and is spaced apart from the side beam 12 along the first direction X. The fixing bracket 3 is at least partially located in the receiving cavity 10. The fixing bracket 3 includes a mounting member 31, a first mounting part 32, and a second mounting part 33. The mounting member 31 is connected to the side beam 12. The first mounting part 32 is connected to the mounting member 31 and disposed between the battery pack 2 and the side beam 12. The first mounting part 32 has a first receiving space 320. Along the second direction Z, the second mounting part 33 is connected to one end of the first mounting part 32. The second mounting part 33 has a second receiving space 330. The busbar 4 is connected to the first mounting part 32 and is electrically connected to the battery pack 2. A portion of the busbar 4 is housed in the first receiving space 320. The wiring harness 5 is connected to the second mounting part 33 and is electrically connected to the battery pack 2. A portion of the wiring harness 5 is housed in the second receiving space 330.

[0041] Based on this technical solution, by setting a fixed bracket 3 integrating mounting parts 31, first mounting parts 32 and second mounting parts 33 between the battery pack 2 and the side beam 12, and by setting a first accommodating space 320 for accommodating the busbar 4 and a second accommodating space 330 for accommodating the wiring harness 5 in the first mounting parts 32 and the second mounting parts 33 respectively, the busbar 4 and the wiring harness 5 can be uniformly integrated and installed on the fixed bracket 3. By connecting the second mounting part 33 to one end of the first mounting part 32 in the second direction Z, the first accommodating space 320 and the second accommodating space 330 can be distributed along the second direction Z, so that the busbar 4 and at least part of the wiring harness 5 can be integrated and arranged in the smaller space between the battery pack 2 and the side beam 12 along the second direction Z, reducing the occupation of the internal space of the battery pack by the busbar 4 and the wiring harness 5, which helps to improve the structural compactness of the battery pack and is conducive to improving the energy density of the battery pack.

[0042] Current battery packs typically employ an independent structure where the busbar 4 and wiring harness 5 are fixed in different locations. This separate arrangement requires separate operations on the busbar 4 and wiring harness 5 in different areas of the battery pack, making the assembly process cumbersome, consuming more assembly time, and reducing assembly efficiency.

[0043] The battery pack provided by this utility model distributes the first accommodating space 320 and the second accommodating space 330 along the second direction Z, so that the busbar 4 and the wiring harness 5 can be integrated and arranged in a smaller space between the battery pack 2 and the side beam 12 along the second direction Z. This allows the assembly process of the busbar 4 and the wiring harness 5 to be completed in the same area of ​​the battery pack, which simplifies the assembly process, reduces the assembly difficulty, and helps to improve assembly efficiency and assembly consistency.

[0044] In this embodiment, the first direction X corresponds to the width direction of the battery pack, the second direction Z corresponds to the height direction of the battery pack, and the third direction Y corresponds to the length direction of the battery pack.

[0045] In this embodiment, the fixing bracket 3 is made of plastic.

[0046] In some other embodiments, the fixing bracket 3 may be made of a material with excellent electrical insulation properties, such as alumina ceramic, aluminum nitride ceramic, glass fiber reinforced plastic (GFRP), polyurethane (PU), polyamide (PA), polycarbonate (PC), epoxy resin composite, mica products, polyphenylene sulfide (PPS) or polyether ether ketone (PEEK), etc.

[0047] The side beam 12 includes a first side beam 121, a second side beam 122, a third side beam 123 and a fourth side beam 124 that are connected to each other. The first side beam 121 and the third side beam 123 are spaced apart in the first direction X. Both the first side beam 121 and the third side beam 123 have cavities 120. The second side beam 122 and the fourth side beam 124 are spaced apart in the third direction Y.

[0048] See Figure 1 and Figure 3 The housing 1 also includes several intermediate beams 13, with the two ends of the intermediate beams 13 respectively connected to the side beams 12 near the intermediate beams 13. The several intermediate beams 13 divide the accommodating cavity 10 into multiple subspaces 101 for accommodating the battery pack 2.

[0049] The number of battery packs 2 is multiple, and the multiple battery packs 2 are arranged along the third direction Y. Each battery pack 2 includes multiple individual cells 21 arranged along the first direction X.

[0050] See Figures 2 to 5 The battery pack also includes an insulator 6, which is at least partially disposed between the busbar 4 and the wiring harness 5. By placing the insulator between the busbar 4 and the wiring harness 5, physical isolation between the busbar 4 and the wiring harness 5 can be achieved, preventing the wiring harness 5 from contacting the busbar 4 due to vibration, displacement, or other reasons during battery pack operation. This avoids potential electrical risks such as short circuits and discharges, thereby improving the safety and reliability of the battery pack. The insulator 6 can also wrap and protect the surface of the wiring harness 5, preventing the wiring harness 5 from rubbing against the bracket or other components during vibration or assembly, which could damage the insulation layer and thus improve the service life and safety of the wiring harness 5.

[0051] See Figures 4 to 9 The mounting component 31 includes a snap-fit ​​head 311, one end of which is connected to the first mounting component 32. The side beam 12 has an internal cavity 120 and two opposing side walls 1201 and 1202, which enclose the cavity 120. The first side wall 1201 has a through hole 12011 connecting the cavity 120 and the receiving cavity 10. The snap-fit ​​head 311 passes through the through hole 12011 and snaps into the first side wall 1201. The mounting component 31 and the side beam 12 are connected by a snap-fit ​​mechanism, eliminating the need for screws, rivets, or other additional fastening structures to achieve a stable connection between the fixing bracket 3 and the side beam 12. This simplifies the assembly process and improves assembly efficiency and consistency. Meanwhile, this snap-fit ​​connection method only requires a through hole 12011 to be opened on the first side wall 1201 of the side beam 12, without the need to add other structural components or special fixing points, which reduces the number of battery pack parts and helps to achieve lightweight battery pack structure.

[0052] In this embodiment, there are two buckle heads 311, which are spaced apart along the third direction Y on the first assembly 32.

[0053] In some other embodiments, the number of snap heads 311 can also be any number, such as one, three, four, five, etc.

[0054] The snap head 311 includes a main body 3111, a connecting part 3112, and at least two elastic claws 3113. One end of the main body 3111 is connected to the connecting part 3112, and the end of the connecting part 3112 away from the main body 3111 is connected to the first fitting 32. The elastic claws 3113 are connected to the end of the main body 3111 away from the connecting part 3112. The elastic claws 3113 are inclined relative to the main body 3111. A first opening 31131 is formed between the end of the elastic claws 3113 away from the main body 3111 and the main body 3111. The first sidewall 1201 includes an inner wall surface 12012 near the cavity 120. The end of the elastic claws 3113 away from the main body 3111 abuts against the inner wall surface 12012. At least a portion of the elastic claws 3113 are located inside the cavity 120. In this way, the elastic claw 3113 can smoothly pass through the through hole 12011 and enter the cavity 120 of the side beam 12 through its own elastic deformation during the installation process, and return to its original shape after entering the cavity 120, so as to achieve a tight contact with the inner wall surface 12012 of the side beam 12, thereby completing a stable snap-fit ​​connection. The fixed bracket 3 and the side beam 12 can be fixed without additional locking parts, which improves the installation efficiency and assembly consistency.

[0055] The arrangement of multiple elastic claws 3113 (i.e., at least two elastic claws 3113) can enhance the load-bearing capacity and anti-detachment capability when the snap-fit ​​head 311 and the side beam 12 are snap-fitted together.

[0056] In this embodiment, there are two elastic claws 3113.

[0057] In some other embodiments, the number of elastic claws 3113 can also be any number, such as three, four, or five.

[0058] Specifically, in this embodiment, the number of two elastic claws 3113 is respectively provided on both sides of the main body 3111 in the third direction Y.

[0059] The buckle head 311 also includes an elastic piece 3114. One end of the elastic piece 3114 is connected to the connecting part 3112, and the other end extends away from the connecting part 3112. The elastic piece 3114 is inclined relative to the main body 3111. A second opening 31141 is formed between the end of the elastic piece 3114 away from the connecting part 3112 and the main body 3111. The first side wall 1201 also includes an outer wall surface 12013 away from the cavity 120. The outer wall surface 12013 is disposed opposite to the inner wall surface 12012, and the elastic piece 3114 abuts against the outer wall surface 12013. In this way, the contact and cooperation between the elastic piece 3114 and the outer wall surface 12013 of the side beam 12, together with the elastic claw 3113 located in the cavity 120 of the side beam 12, can realize the double limiting and clamping fixation of the mounting part 31, enhancing the connection strength and anti-detachment ability between the fixing bracket 3 and the side beam 12.

[0060] In this embodiment, there are two elastic sheets 3114, which are arranged symmetrically.

[0061] In some other embodiments, the number of elastic sheets 3114 can also be any number, such as three, four, or five.

[0062] Specifically, in this embodiment, the number of two elastic sheets 3114 are respectively provided on both sides of the connecting portion 3112 in the third direction Y.

[0063] The first assembly 32 includes a first side plate 321, a second base plate 322, and a second side plate 323. The first side plate 321 is connected to one end of the second base plate 322 in the first direction X. The second side plate 323 is connected to the end of the second base plate 322 in the first direction X away from the first side plate 321 and is disposed opposite to the first side plate 321. The mounting component 31 is connected to the side of the second side plate 323 away from the first side plate 321. A first receiving space 320 is formed between the first side plate 321, the second base plate 322, and the second side plate 323, and the busbar 4 passes through the first receiving space 320. Thus, the first receiving space 320, formed by the first side plate 321, the second base plate 322, and the second side plate 323, and through which the busbar 4 passes, can limit the busbar 4 in the first direction X, preventing the busbar 4 from shifting or loosening in the first direction X during assembly or use.

[0064] The first assembly 32 also includes a first limiting part 324 and a second limiting part 325. The first limiting part 324 is connected to the first side plate 321 and disposed within the first receiving space 320. The second limiting part 325 is connected to the second side plate 323 and disposed within the first receiving space 320. The first limiting part 324 and the second limiting part 325 are disposed opposite to each other. Along the second direction Z, both the first limiting part 324 and the second limiting part 325 are located on the side of the busbar 4 away from the second base plate 322. Thus, the second base plate 322, the first limiting part 324, and the second limiting part 325 can limit the busbar 4 passing through the first receiving space 320 in the second direction Z, preventing the busbar 4 from shifting or loosening in the second direction Z during assembly or use.

[0065] Along the first direction X, a first limiting part 324 and a second limiting part 325 are spaced apart, and a third opening 326 is formed between the first limiting part 324 and the second limiting part 325. The busbar 4 is configured to pass through the third opening 326 along the second direction Z. In this way, while ensuring that the first limiting part 324 and the second limiting part 325 can limit the busbar 4 in the second direction Z, the busbar 4 can directly enter the first receiving space 320 along the second direction Z through the third opening 326, thereby achieving rapid positioning and assembly, simplifying the assembly process, reducing the difficulty of operation, and improving assembly efficiency.

[0066] The busbar 4 has a bottom surface 41 and a top surface 42 facing each other in the second direction Z, with the bottom surface 41 contacting the second base plate 322. A first limiting part 324 has a first limiting surface 3242 in contact with the top surface 42 in the second direction Z, and a second limiting part 325 has a second limiting surface 3252 in contact with the top surface 42 in the second direction Z. Thus, after the busbar 4 is assembled into the first receiving space 320, the second base plate 322 can provide stable support for the busbar 4. By cooperating with the first limiting surface 3242 and the second limiting surface 3252 on the side of the busbar 4 facing away from the second base plate 322, a bidirectional limiting effect can be formed on the busbar 4 in the second direction Z, thereby securely installing the busbar 4 within the first receiving space 320 and preventing displacement of the busbar 4 during use.

[0067] Preferably, the first limiting portion 324 and the second limiting portion 325 can be made of elastic materials, such as plastic, elastic plastic, rubber, polyurethane, etc.

[0068] Specifically, in this embodiment, the first limiting part 324 includes a first side surface 3241, a first limiting surface 3242, a second side surface 3243, and a first inclined surface 3244. The first side surface 3241 is connected to the first side plate 321. The first limiting surface 3242 is connected to the first side surface 3241 at one end in the first direction X and contacts the top surface 42. The second side surface 3243 is connected to the end of the first limiting surface 3242 away from the first side surface 3241 in the first direction X and is disposed opposite to the first side surface 3241. Along the third direction Y, the length of the second side surface 3243 is less than the length of the first side surface 3241. The end of the first inclined surface 3244 near the first limiting surface 3242 is connected to the second side surface 3243, and the end of the first inclined surface 3244 away from the first limiting surface 3242 is connected to the first side surface 3241. 25 includes a third side surface 3251, a second limiting surface 3252, a fourth side surface 3253, and a second inclined surface 3254. The third side surface 3251 is connected to the second side plate 323. One end of the second limiting surface 3252 is connected to the third side surface 3251 in the first direction X and contacts the top surface 42. The fourth side surface 3253 is connected to the end of the second limiting surface 3252 away from the third side surface 3251 in the first direction X and is opposite to the third side surface 3251. An inlet is formed between the fourth side surface 3253 and the second side surface 3254. Along the third direction Y, the length of the fourth side surface 3253 is less than the length of the third side surface 3251. One end of the second inclined surface 3254 near the second limiting surface 3252 is connected to the fourth side surface 3253, and the other end of the second inclined surface 3254 away from the second limiting surface 3252 is connected to the third side surface 3251. Thus, the first limiting part 324 and the second limiting part 325 form an opening area (i.e., the third opening 326) with a certain guiding angle at the end near the insertion direction of the busbar 4, so that the busbar 4 can smoothly slide into the limiting space composed of the second base plate 322, the first side plate 321, the second side plate 323, the first limiting surface 3242 and the second limiting surface 3252 along the first inclined surface 3244 and the second inclined surface 3254. This helps to improve the smoothness and consistency of the assembly process of the busbar 4, reduce the difficulty of operation during assembly, and improve assembly efficiency.

[0069] The second mounting component 33 includes a first mounting plate 331, a second mounting plate 332, and a connecting strap 333. The first mounting plate 331 is connected to the end of the first side plate 321 away from the second bottom plate 322 in the second direction Z. The first mounting plate 331 has a through hole 3311. The second mounting plate 332 is connected to the end of the second side plate 323 away from the second bottom plate 322 in the second direction Z and is opposite to the first mounting plate 331. The second mounting plate 332 has a through hole 3321. The connecting strap 333 passes through the first through hole 3311 and the second through hole 3321. The first mounting plate 331, the second mounting plate 332, and the connecting strap 333 form a second receiving space 330. The wire harness 5 passes through the second receiving space 330. Thus, the first mounting plate 331, the second mounting plate 332, and the connecting strip 333 form a second receiving space 330, and the wire harness 5 is threaded through the second receiving space 330. The second receiving space 330 can limit the wire harness 5 in the first direction X, preventing the wire harness 5 from shifting or loosening in the first direction X during assembly or use, and preventing the wire harness 5 from bending or tangling during assembly or use.

[0070] In this embodiment, the connecting strap 333 is a cable tie. As a standardized and universal connecting element, the cable tie has good flexibility, self-locking properties, and tensile strength, which can adapt to the arrangement requirements of wire harnesses 5 of different sizes and specifications. At the same time, it has strong environmental adaptability and long-term use stability, which helps to improve the overall reliability and safety of the battery pack.

[0071] In other embodiments, the connecting strap 333 may also be, but is not limited to, elastic straps, nylon straps, metal straps, and plastic chain straps.

[0072] In this embodiment, the first through hole 3311 is located on the side of the side beam 12 away from the first base plate 11, that is, the first through hole 3311 is located outside the receiving cavity 10, and the second through hole 3321 is located on the side of the side beam 12 away from the first base plate 11, that is, the second through hole 3321 is located outside the receiving cavity 10. In this way, the connecting strap 333 can pass through the first through hole 3311 and the second through hole 3321 and tie the wire harness outside the narrow channel formed by the battery pack 2 and the side beam 12, without the operator needing to put their hands or assembly tools into the narrow channel formed by the battery pack 2 and the side beam 12 to pass through the first through hole 3311 and the second through hole 3321 and tie the wire harness, which reduces the difficulty of operation, facilitates the rapid assembly of the wire harness, and helps to improve assembly efficiency.

[0073] In some other embodiments, the first through hole 3311 may be located inside the receiving cavity 10, that is, the second through hole 3321 may be located inside the receiving cavity 10. In this way, the fixing bracket 3 can be completely housed inside the receiving cavity 10, and the fixing bracket 3 does not need to extend to the side of the side beam 12 away from the first base plate 11.

[0074] By setting up the insulating component 6, when the diameter of the wire harness 5 is small and it is difficult to reliably fix it using the connecting strap 333 alone, the insulating component 6 and the wire harness 5 can be clamped and fixed together by the connecting strap 333, thereby improving the stability of the installation and the reliability of the assembly of the wire harness 5.

[0075] Preferably, the insulating component 6 is made of an elastic insulating material, such as foam, silicone, rubber, thermoplastic elastomer, etc. The elastic insulating material gives the insulating component 6 a certain degree of deformation capability, so that the insulating component 6 can adapt to wire harnesses 5 of different sizes and fill the gaps around them under the clamping action of the connecting strap 333, preventing the wire harness 5 from shaking or shifting during use and improving the firmness of the wire harness fixation.

[0076] In this embodiment, the insulating component 6 is made of foam.

[0077] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery pack, characterized in that, Having a first direction (X) and a second direction (Z) that are perpendicular to each other, including: The box body (1) includes a first bottom plate (11) and a side beam (12), the first bottom plate (11) and the side beam (12) being connected to form a receiving cavity (10); A battery pack (2) is disposed in the receiving cavity (10) along the first direction (X), and the battery pack (2) is spaced apart from the side beam (12); A fixed bracket (3) is located at least partially within the receiving cavity (10). The fixed bracket (3) includes a mounting member (31), a first mounting part (32), and a second mounting part (33). The mounting member (31) is connected to the side beam (12). The first mounting part (32) is connected to the mounting member (31) and disposed between the battery pack (2) and the side beam (12). The first mounting part (32) has a first receiving space (320). Along the second direction (Z), the second mounting part (33) is connected to one end of the first mounting part (32). The second mounting part (33) has a second receiving space (330). Busbar (4) is connected to the first assembly (32), and part of the busbar (4) is housed within the first receiving space (320); A wire harness (5) is connected to the second assembly (33), and a portion of the wire harness (5) is housed within the second receiving space (330).

2. The battery pack according to claim 1, characterized in that, The first assembly (32) includes a first side plate (321), a second bottom plate (322), and a second side plate (323). The first side plate (321) is connected to one end of the second bottom plate (322) in the first direction (X), and the second side plate (323) is connected to one end of the second bottom plate (322) away from the first side plate (321) in the first direction (X). The second side plate (323) is disposed opposite to the first side plate (321). The mounting member (31) is connected to the side of the second side plate (323) away from the first side plate (321). The first side plate (321), the second bottom plate (322), and the second side plate (323) form the first accommodating space (320), and the busbar (4) passes through the first accommodating space (320).

3. The battery pack according to claim 2, characterized in that, The first assembly (32) further includes a first limiting part (324) and a second limiting part (325). The first limiting part (324) is connected to the first side plate (321) and disposed in the first accommodating space (320). The second limiting part (325) is connected to the second side plate (323) and disposed in the first accommodating space (320). The first limiting part (324) and the second limiting part (325) are disposed opposite to each other. Along the second direction (Z), the first limiting part (324) and the second limiting part (325) are both located on the side of the busbar (4) away from the second bottom plate (322).

4. The battery pack according to claim 3, characterized in that, Along the first direction (X), the first limiting portion (324) and the second limiting portion (325) are spaced apart, and a third opening (326) is formed between the first limiting portion (324) and the second limiting portion (325). The busbar (4) is configured to be able to pass through the third opening (326) along the second direction (Z).

5. The battery pack according to claim 3, characterized in that, The busbar (4) has a bottom surface (41) and a top surface (42) disposed opposite to each other in the second direction (Z), and the bottom surface (41) contacts the second base plate (322); The first limiting part (324) has a first limiting surface (3242) in the second direction (Z) that contacts the top surface (42), and the second limiting part (325) has a second limiting surface (3252) in the second direction (Z) that contacts the top surface (42).

6. The battery pack according to claim 2, characterized in that, The second mounting component (33) includes a first mounting plate (331), a second mounting plate (332), and a connecting strap (333). The first mounting plate (331) is connected to one end of the first side plate (321) in the second direction (Z) away from the second bottom plate (322). The first mounting plate (331) has a through hole (3311). The second mounting plate (332) is connected to the second side plate (323) in the second direction (Z) away from the second bottom plate (322). At one end of the first mounting plate (331), the second mounting plate (332) is disposed opposite to the first mounting plate (331). The second mounting plate (332) has a through second through hole (3321). The connecting strip (333) passes through the first through hole (3311) and the second through hole (3321). The first mounting plate (331), the second mounting plate (332) and the connecting strip (333) form the second receiving space (330). The wire harness (5) passes through the second receiving space (330).

7. The battery pack according to claim 1, characterized in that, The mounting component (31) includes a snap-fit ​​head (311), one end of which is connected to the first mounting component (32); The side beam (12) has a cavity (120) inside. The side beam (12) includes a first side wall (1201) and a second side wall (1202) arranged opposite to each other. The first side wall (1201) and the second side wall (1202) are used to enclose the cavity (120). The first side wall (1201) has a through hole (12011) that connects the cavity (120) and the receiving cavity (10). The buckle head (311) passes through the through hole (12011) and is buckled to the first side wall (1201).

8. The battery pack according to claim 7, characterized in that, The latch head (311) includes a main body (3111), a connecting part (3112), and at least two elastic claws (3113). One end of the main body (3111) is connected to the connecting part (3112), and the end of the connecting part (3112) away from the main body (3111) is connected to the first assembly (32). The elastic claw (3113) is connected to the end of the main body (3111) away from the connecting part (3112). The elastic claw (3113) is inclined relative to the main body (3111). A first opening (31131) is formed between the end of the elastic claw (3113) away from the main body (3111) and the main body (3111). The first sidewall (1201) includes an inner wall surface (12012) near the cavity (120). The end of the elastic claw (3113) away from the main body (3111) abuts against the inner wall surface (12012). At least a portion of the elastic claw (3113) is located within the cavity (120).

9. The battery pack according to claim 8, characterized in that, The buckle head (311) further includes an elastic piece (3114), one end of which is connected to the connecting part (3112) and the other end extends away from the connecting part (3112); the elastic piece (3114) is inclined relative to the main body (3111), and a second opening (31141) is formed between the end of the elastic piece (3114) away from the connecting part (3112) and the main body (3111); the first sidewall (1201) further includes an outer wall surface (12013) away from the cavity (120), the outer wall surface (12013) is disposed opposite to the inner wall surface (12012), and the elastic piece (3114) abuts against the outer wall surface (12013).

10. The battery pack according to any one of claims 1-9, characterized in that, It also includes an insulating element (6), which is at least partially disposed between the busbar (4) and the wire harness (5).

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