A battery pack

Abstract

The utility model discloses a battery pack, including box, battery group is located in the box, including a plurality of parallelly arranged battery row, and each battery row includes the battery along the first direction stack, the busbar includes first connecting portion, second connecting portion and the transition connecting portion of connecting first connecting portion and second connecting portion, and first connecting portion and second connecting portion are connected respectively along the first direction in two adjacent battery row the battery close to the box, and the transition connecting portion both ends are bent and connect first connecting portion and second connecting portion to realize the electric connection of two adjacent battery row, the insulating structure includes support frame, and support frame is connected to the box, and is supported in the transition connecting portion. The battery pack in the utility model, through setting up the support structure to support the busbar, avoids the situation that the busbar is pulled and breaks when the battery pack is in the harsh bumpy road section.

Description

Technical Field

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

[0002] The battery rows within the battery pack are connected in series or parallel via busbars. Since the busbars are set higher than the housing and are suspended relative to the housing, there is a gap between the busbars and the housing. When the battery pack moves on rough and bumpy roads, the busbars are subjected to excessive stress, which can easily lead to breakage. Utility Model Content

[0003] The purpose of this utility model is to disclose a battery pack to solve the problem that the busbar in the prior art is prone to breakage because it is suspended relative to the housing.

[0004] To achieve the above objectives, this utility model discloses a battery pack, including a housing; A battery pack, disposed within the housing, includes multiple battery columns arranged side by side, each battery column including batteries stacked along a first direction; The busbar includes a first connecting part, a second connecting part, and a transition connecting part connecting the first connecting part and the second connecting part. The first connecting part and the second connecting part are respectively connected to batteries in two adjacent battery rows that are close to the housing along the first direction. The two ends of the transition connecting part are bent and connected to the first connecting part and the second connecting part respectively, so as to realize the electrical connection of the two adjacent battery rows. An insulating structure includes a support frame connected to the housing and supported by the transition connection portion.

[0005] As an optional implementation, the insulation structure further includes a first buffer pad disposed between the busbar and the support frame; And / or, the insulation structure further includes a second buffer pad disposed on the side of the busbar away from the support frame.

[0006] As an optional implementation, the transition connection portion is at least partially provided with a first buffer structure, the first buffer structure including a recessed structure toward the support frame and / or an arched structure away from the support frame.

[0007] As an optional implementation, the support frame is provided with a second buffer structure, which corresponds to and cooperates with the first buffer structure. The upper and lower surfaces of the first buffer pad are respectively connected to the first buffer structure and the second buffer structure.

[0008] As an optional implementation, the housing includes a crossbeam, the support frame is connected to the crossbeam, the support frame protrudes from the crossbeam on at least one side along the first direction, and the transition connection protrudes from the support frame on at least one side along the first direction.

[0009] As an optional implementation, the surface of the transition connection is provided with an insulating layer, the thickness of which is h, h≥0.3mm.

[0010] As an optional implementation, the support frame is provided with weight reduction holes, which penetrate the support frame along the first direction.

[0011] As an optional implementation, the top of the support frame is provided with a second buffer structure and the weight reduction hole is provided through it along the first direction.

[0012] As an optional implementation, the bottom of the support frame is provided with a protruding mounting part, and the mounting part and the housing are riveted together and fixed along the first direction.

[0013] As an optional implementation, the battery pack includes at least two insulating frames, each of which is provided with a first riveting post and a second riveting post. The first connecting part is provided with a first connecting hole, and the second connecting part is provided with a second connecting hole. The first connecting hole is thermally riveted to the first riveting post, and the second connecting hole is thermally riveted to the second riveting post. The second connecting hole is a notch opened on the side wall of the second connecting part away from the first connecting part.

[0014] Compared with the prior art, the beneficial effects of the battery pack of this utility model are as follows: The battery pack of this utility model, by setting the busbar to include a first connecting part, a second connecting part, and a transition connecting part, connects the first connecting part and the second connecting part to two adjacent battery columns respectively, realizing the series / parallel connection between the two battery columns. The transition connecting part cooperates with the support frame, and the support frame is connected to the housing, so the support frame supports the entire busbar. It is equivalent to the support frame filling the gap between the busbar and the housing, preventing the busbar from being in a suspended state. This avoids the risk of the busbar breaking due to excessive stress caused by the tension between adjacent battery columns when the battery pack is on a rough and bumpy road. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the battery pack structure according to an embodiment of the present invention; Figure 2 yes Figure 1 An enlarged schematic diagram of point I in the diagram; Figure 3 yes Figure 1 Enlarged schematic diagram of point II in the diagram; Figure 4 yes Figure 1 A structural schematic diagram of the beams, busbars, and supporting structures from one perspective; Figure 5 yes Figure 4 A structural schematic diagram of the beams, busbars, and supporting structures from another perspective; Figure 6 yes Figure 5 Enlarged schematic diagram of point III in the diagram; Figure 7 yes Figure 4 Top view of the second enclosure, busbar, and supporting structure; Figure 8 yes Figure 7 A cross-sectional view along the AA direction; Figure 9 This is a schematic diagram of the busbar and insulating frame according to an embodiment of the present invention.

[0017] Explanation of key figure labels: 100-Battery pack, 10-Box, 11-Mounting cavity, 12-Longitudinal beam, 13-Crossbeam, 131-First side wall, 132-Second side wall, 133-Top wall, 20-Battery group, 21-Battery row, 211-Battery, 30-Busbar, 31-First connection part, 311-First connection hole, 32-Second connection part, 321-Second connection hole, 33-Transition connection part, 331-Main body, 332-Bend 333-Connecting section, 34-First buffer structure, 341-First protrusion, 35-Insulation layer, 40-Insulation structure, 41-Support frame, 411-Mounting part, 412-Support part, 413-Weight reduction hole, 414-Second buffer structure, 4141-Second protrusion, 42-First buffer pad, 43-Second buffer pad, 50-Rivet, 60-Insulation frame, 61-First riveting post, 62-Second riveting post. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0022] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0023] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0024] When a battery pack comprises multiple battery rows, adjacent battery rows are connected in series or parallel via busbars. The busbars are typically located on top of the battery rows. Because the battery rows are positioned above the enclosure, and due to space constraints, the busbars usually extend towards the enclosure, resulting in them being above the enclosure with a gap between them. When the battery pack travels on rough, bumpy roads, the busbars, being suspended, experience excessive stress and are prone to breakage.

[0025] Therefore, in order to solve the above technical problems, please refer to Figures 1 to 9 This application provides a battery pack 100, including a housing 10, a battery pack 20, a busbar 30, and an insulation structure 40.

[0026] Please refer to Figures 1 to 4 The housing 10 serves as the mounting base and is provided with a mounting cavity 11. The battery pack 20 is located inside the housing 10 and includes multiple battery rows 21 arranged in parallel along the second direction Y. Each battery row 21 includes batteries 211 stacked along the first direction X. The busbar 30 includes a first connecting part 31, a second connecting part 32, and a transition connecting part 33 connecting the first connecting part 31 and the second connecting part 32. The first connecting part 31 and the second connecting part 32 respectively connect the batteries 211 in two adjacent battery rows 21 that are close to the housing 10 along the first direction X. The two ends of the transition connecting part 33 are bent to connect the first connecting part 31 and the second connecting part 32 respectively, so as to realize the electrical connection of two adjacent battery rows 21, thereby making the electrical connection path short and effectively utilizing the internal space of the battery pack 20. The insulation structure 40 includes a support frame 41, which is connected to the housing 10 and supported by the transition connecting part 33.

[0027] The aforementioned battery pack 100, by configuring the busbar 30 to include a first connecting part 31, a second connecting part 32, and a transition connecting part 33, allows the first connecting part 31 and the second connecting part 32 to connect to two adjacent battery columns 21 respectively, achieving series / parallel connection between the two battery columns 21. The transition connecting part 33 cooperates with the support frame 41, which is connected to the housing 10. The support frame 41 supports the entire busbar 30, essentially filling the gap between the busbar 30 and the housing 10, preventing the busbar 30 from being suspended. This avoids the risk of the busbar 30 breaking due to excessive stress caused by the tension between adjacent battery columns 21 when the battery pack 100 is on rough, bumpy roads. At the same time, the support frame provides direct support for the busbar 30, effectively suppressing vibration and preventing deformation or damage, further improving the safety and reliability of the battery pack 100.

[0028] The battery pack 100 is used in electrical devices, such as vehicles and spacecraft. Vehicles can be pure electric vehicles or hybrid vehicles that require the installation of the battery pack 100; spacecraft can include aircraft, rockets, and other flight equipment.

[0029] The battery pack 20 includes multiple battery columns 21 arranged in parallel along the second direction Y, and each battery column 21 includes multiple batteries 211 arranged in parallel along the first direction X. The batteries 211 may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and are not limited thereto; the batteries 211 may be cylindrical batteries, prismatic batteries, or flat elongated batteries, etc., and are not limited thereto.

[0030] In this embodiment, the busbar 30 is made of aluminum, which has the advantages of being lightweight and having a lower cost. Furthermore, by directly connecting two adjacent battery banks 21 through the busbar 30, there is no need to set output terminals or use adapters, which can improve production efficiency, reduce the number of parts, and lower costs.

[0031] Please refer to Figure 1 The housing 10 includes a pair of opposing longitudinal beams 12 and a pair of opposing transverse beams 13. A longitudinal beam 12 and a transverse beam 13 are alternately connected in sequence. The longitudinal beam 12 extends in a first direction X, and the transverse beam 13 extends in a second direction Y. In this embodiment, the example of an insulating structure 40 being installed on the transverse beam 13 is used for illustration.

[0032] It should be noted that when the busbar 30 achieves electrical connection between two adjacent battery columns 21, the battery pack 100 also includes a CCS assembly. The CCS assembly includes a signal acquisition component and an insulating frame 60. The signal acquisition component includes a circuit board. The insulating frame 60 positions and installs the circuit board and the busbar 30, while also isolating them from the battery columns 21 to achieve electrical insulation. The circuit board is used to transmit information (such as voltage and temperature). The busbar 30 and the terminals of the battery 211 are electrically connected to achieve high-voltage series / parallel connection between the batteries 211.

[0033] Please see Figure 5In one embodiment of this utility model, to further enhance the protective effect on the busbar 30, the insulation structure 40 further includes a first buffer pad 42, which is disposed between the busbar 30 and the support frame 41; and / or, the insulation structure 40 further includes a second buffer pad 43, which is disposed on the side of the busbar 30 away from the support frame 41. For example, the second buffer pad 43 can be disposed between the cover and the busbar 30. That is, in this embodiment, the insulation structure 40 further includes one of the first buffer pad 42 and the second buffer pad 43, or both simultaneously. Thus, by setting at least one buffer pad, the busbar 30 can be fixed and buffered, achieving the effect of absorbing vibration. The busbar 30 is made of metal and is a live conductor. The housing 10 is also usually made of metal and can be grounded. The insulation structure 40 ensures electrical isolation between the busbar 30 and the housing 10, preventing short circuits.

[0034] The thickness of the first buffer pad 42 along the third direction Z ranges from 0.4mm to 0.6mm. This avoids the situation where a larger thickness of the first buffer pad would affect the assembly of the entire battery pack 100, and also avoids the situation where a smaller thickness would fail to achieve the desired buffering effect. Therefore, the thickness of the first buffer pad 42 is set within the range of 0.4mm to 0.6mm to balance space constraints and buffering functionality.

[0035] In some embodiments, the thickness l1 of the first buffer pad 42 can be set to a value such as 0.4mm, 0.45mm, 0.50mm, 0.55mm or 0.6mm, and is not limited here.

[0036] Specifically, in this embodiment, the first buffer pad 42 is set to 0.5mm, so that the thickness of the first buffer pad 42 is within an appropriate range, avoiding it being too thin to achieve the buffering effect, and also avoiding it being too thick to affect the assembly height of the entire battery pack 100.

[0037] Since the second buffer pad 43 supports the top cover of the battery pack 100, and the top cover has a relatively heavy weight, the thickness l2 of the second buffer pad 43 along the third direction Z is greater than the thickness of the first buffer pad 42. When it is squeezed by the top cover, it can have sufficient deformation space, more effectively absorb and disperse the impact force from the top cover, and prevent it from being directly transmitted to the internal battery pack 20, thereby extending the service life of the battery pack 100.

[0038] Please see Figures 2 to 7 as well as Figure 9Since the busbar 30 is subject to vibration or impact during movement, the transition connection 33 in this embodiment is provided with a first buffer structure 34. The first buffer structure 34 includes a recessed structure facing the support frame 41 and / or an arched structure facing away from the support frame 41. In this way, the vibration or impact is absorbed by the elastic deformation of the first buffer structure 34 itself, preventing the vibration from being directly transmitted through the rigid connection, which greatly improves the reliability of the connection and further avoids the situation where the busbar 30 is prone to breakage when subjected to vibration during movement, thereby extending the service life of the entire battery pack 100. Furthermore, in the production and assembly process, there may be slight tolerances in the installation of the battery 211, busbar 30, etc. The first buffer structure 34 can compensate for these slight positional deviations, making installation easier and improving production efficiency. For example, the first buffer structure 34 can be configured as multiple concave bulges facing one side of the support frame 41 and / or convex bulges arching away from the support frame 41. The bulges can be configured in a directional or hemispherical shape, etc., which can achieve the effect of absorbing stress and preventing mechanical damage and breakage of the busbar 30.

[0039] Specifically, please refer to Figures 4 to 6 as well as Figure 9 The diagram shows the structure of the first buffer structure 34 provided in the embodiment. The first buffer structure 34 includes at least one first protrusion 341. Specifically, the first protrusion 341 arches towards the side away from the support frame 41. In this way, compared with the way the first buffer structure 34 arches towards the side facing the support frame 41, the first protrusion 341 will occupy the space in the thickness direction of the first buffer pad 42 (i.e., occupy the space along the third direction Z), which is not convenient for the setting of the first buffer pad 42. By setting the first buffer structure 34 to arch towards the side away from the support frame 41, it is convenient to set a first buffer pad 42 of a certain thickness between the busbar 30 and the support frame 41, and at the same time, it is not necessary to make a recessed treatment on the housing 10 corresponding to the area of ​​the first protrusion 341.

[0040] Understandably, due to the elasticity of the first buffer pad 42, it can be designed to conform to the shape of the first buffer structure 34, i.e., the first buffer pad 42 is embedded in the cavity formed by the first buffer structure 34, thereby achieving a supporting effect for the first buffer structure 34. When the battery pack 100 is subjected to vibration or impact during movement, the conformal design of the first buffer pad 42 can eliminate gaps, allowing the first buffer structure 34, the first buffer pad 42, and the support frame 41 to fit tightly together, resulting in stronger overall buffering capacity and more effective absorption of impact and vibration, preventing the busbar 30 from breaking due to excessive stress. In addition, the conformal design can further limit the movement and swaying of the busbar 30, enhancing its fixing effect. The first buffer pad 42 is made of insulating material, which also prevents changes in the insulation gap between the busbar 30 and other components below or below due to vibration, ensuring the stability of insulation safety.

[0041] The number of first protrusions 341 can be set to one, two, or other numbers, depending on the length spanned by the transition connection 33 along the second direction Y. For example Figure 3 Because the busbar 30 in the middle needs to be connected for a long length, it is provided with multiple first protrusions 341; Figure 2 Since the busbar 30 in the middle has a short bridging length, it is provided with a first protrusion 341.

[0042] Furthermore, in this embodiment, a plurality of first protrusions 341 are spaced apart along a direction parallel to the second direction Y, so that when the busbar 30 is subjected to a tensile force between the housing 10 and the battery array 21, it can achieve the effect of dispersing stress.

[0043] It should be noted that the busbar 30 is connected between two adjacent battery banks 21. Therefore, the direction of current flow refers to the direction of current flow between one battery bank 21 and the other battery bank 21.

[0044] When the first buffer pad 42 and the transition connection part 33 are connected, they can be bonded with adhesive to ensure the stability of the connection and facilitate assembly. Furthermore, since the first buffer structure 34 arches away from the box 10, the first buffer pad 42 is embedded in the cavity formed by the arch. That is, the first buffer pad 42 can be provided with an embedding protrusion at the position corresponding to the first protrusion 341. When the first buffer pad 42 is connected to the box 10, the lower surface of the first buffer pad 42 can be set to be flat, so as to fit against the upper surface of the crossbeam 13.

[0045] Both the first buffer pad 42 and the second buffer pad 43 can be made of foam.

[0046] Please see Figure 5 and Figure 6 To ensure the support strength of the busbar 30, the support frame 41 is provided with a second buffer structure 414. The upper and lower surfaces of the first buffer pad 42 are connected to the first buffer structure 34 and the second buffer structure 414, respectively. That is, the second buffer structure 414 and the first buffer structure 34 are set with the same shape. For example, the first buffer structure 34 includes multiple first protrusions 341, and the second buffer structure 414 includes multiple second protrusions 4141. One second protrusion 4141 and one first protrusion 341 are correspondingly arranged. Thus, under the support of the second protrusion 4141, the first buffer pad 42 can arch towards the busbar 30. The first buffer pad 42 can be embedded into the cavity formed by the first buffer structure 34, thereby ensuring that the first buffer pad 42 can achieve a stable fit with the transition connection part 33.

[0047] Further, please refer to Figure 7 and Figure 9 Since the transition connection portion 33 in this embodiment is bent at both ends and connected to the first connection portion 31 and the second connection portion 32 respectively, the transition connection portion 33 includes a main body 331, a bent section 332, multiple connection sections 333 and the aforementioned first buffer structure 34. The connection section 333 is connected between the bent section 332 and the first protrusion 341, or between each two adjacent first protrusions 341. The bent section 332 is connected to the main body 331. The main body 331 is connected to the first connection portion 31 or the second connection portion 32. The bent section 332 is inclined relative to the main body 331 and has an obtuse angle with the main body 331. Specifically, the bent section 332 is bent upward relative to the side of the connection section 333 away from the support frame 41. In this way, after the entire busbar 30 is formed, the upper surface of the first protrusion 341 can be made as flush as possible with the upper surface of the main body 331, so as to facilitate assembly with the battery array 21.

[0048] Please see Figures 1 to 3 and Figure 8 In this embodiment, when the insulating structure 40 is installed on the housing 10, specifically, the support frame 41 is connected to the crossbeam 13, and at least one side of the support frame 41 protrudes from the crossbeam 13 along the first direction X. The transition connection 33 protrudes from the support frame 41 along the first direction X. In this way, by setting the transition connection 33 to protrude from the support frame 41, the transition connection 33 has a larger width along the first direction X, which directly increases the cross-sectional area of ​​the current path, thereby enabling a larger current-carrying area and improving the current-carrying capacity.

[0049] When the transition connection 33 protrudes from the support frame 41 on at least one side along the first direction X, it may protrude from the support frame 41 on the side away from the battery 211, or on the side closer to the battery row 21, or the transition connection 33 protrudes from the support frame 41 on both sides along the first direction X, so that the busbar 30 has a larger flow area.

[0050] Please see Figures 7 to 9 In one embodiment of this utility model, in order to ensure the insulation between the transition connection 33 and other structures, an insulating layer 35 is provided on the surface of the transition connection 33. Specifically, an insulating layer 35 is provided on the upper surface, the lower surface, and the side facing away from the battery array 21 along the first direction X of the transition connection 33. By providing an insulating layer 35 on the surface of the transition connection 33, the insulation effect between the busbar 30 and the housing 10 and other components is ensured, short circuits are prevented, and the withstand voltage capability of the busbar 30 is guaranteed.

[0051] Understandably, since the first connecting part 31 and the second connecting part 32 need to be connected to the signal acquisition component and the battery 211 respectively, the first connecting part 31 and the second connecting part 32 need to be in an exposed state without an insulating layer 35.

[0052] The insulating layer 35 can be installed by spraying an insulating material onto the surface of the transition connection portion 33, for example, by spraying epoxy resin. Since epoxy resin is also an adhesive, it can stably adhere to the surface of the transition connection portion 33.

[0053] Please refer to Figure 8 The thickness of the insulation layer 35 is h, h≥0.3mm. This value is set to avoid the insulation layer 35 being too thin and failing to achieve the insulation effect, to prevent it from being scratched off when it rubs or collides with other components, and to avoid the thickness affecting the assembly of the entire battery pack 100, or even causing material waste and increasing costs, so as to meet the national standard requirements for insulation and withstand voltage.

[0054] In some embodiments, the thickness h of the insulating layer 35 can be set to a value such as 0.3 mm, 0.4 mm or 0.5 mm, and is not limited thereto.

[0055] Please see Figure 8 In this embodiment, when the support frame 41 is installed on the crossbeam 13, the support frame 41 and the crossbeam 13 are fixedly connected, thereby ensuring the stability of the support frame 41 installed on the crossbeam 13 and preventing the battery pack 100 from becoming loose due to bumps during use.

[0056] Specifically, in this embodiment, when the support frame 41 and the crossbeam 13 are fixedly connected, a protruding mounting part 411 is provided at the bottom of the support frame 41. The mounting part 411 and the crossbeam 13 are riveted and fixed along the first direction X by rivets 50. In this way, the installation of the support frame 41 on the crossbeam 13 is simple and convenient. At the same time, the connection strength is guaranteed by the rivets 50, the installation is simple, the process is saved, and the installation cost can be reduced.

[0057] In this embodiment, the support frame 41 includes a support part 412 and a mounting part 411 located at the bottom of the support part 412. The support part 412 and the mounting part 411 are arranged perpendicularly to each other. The support part 412 is used to support the busbar 30, and the mounting part 411 is used to fix it to the crossbeam 13. Thus, by setting the support part 412, the busbar 30 can have a large support area.

[0058] It should be noted that you should refer to [link / reference]. Figure 8 The crossbeam 13 includes a first sidewall 131 and a second sidewall 132 arranged opposite to each other, and a top wall 133 connecting the first sidewall 131 and the second sidewall 132. The first sidewall 131 is close to the battery pack 21, and the second sidewall 132 is away from the battery pack 21. When the support frame 41 is installed on the crossbeam 13, the support frame 41 and the second sidewall 132 are connected. In this way, by connecting the support frame 41 and the second sidewall 132 of the crossbeam 13, it is convenient to install the support frame 41 and the housing 10. The rivets 50 can be easily driven in from the side away from the battery pack 21. At the same time, the support frame 41 avoids occupying space in the housing 10 after installation, thereby saving space and improving the energy density of the battery pack 100.

[0059] Please see Figures 4 to 6 In one embodiment of this utility model, the support frame 41 is provided with a weight reduction hole 413, which penetrates the support frame 41 along the first direction X. In this way, the weight reduction hole 413 not only achieves the effect of weight reduction, but also, since the support frame 41 is a plastic part, the weight reduction hole 413 prevents the support part 412 from shrinking due to the excessive thickness of the plastic part during demolding.

[0060] Specifically, the top of the support frame 41 is provided with a second buffer structure 414 and a weight-reducing hole 413 that runs through the first direction X. That is, the support part 412 of the support frame 41 is provided with a weight-reducing hole 413. Since the orientation of the support part 412 is parallel to the first direction X, it has a large thickness along the first direction X and a large support width along the second direction Y. By providing a weight-reducing hole 413 on the support part 412, the structural strength of the support frame 41 is improved, and the shrinkage of the support part 412 due to excessive thickness during demolding is avoided.

[0061] The weight reduction hole 413 can be square, round, elliptical, or other shapes, and is not limited here.

[0062] Please see Figure 9 In one embodiment of the present invention, the battery pack 100 includes at least two insulating frames 60, a signal acquisition component is disposed on one insulating frame 60, and the two insulating frames 60 are respectively provided with a first riveting post 61 and a second riveting post 62.

[0063] The first connecting part 31 is provided with a first connecting hole 311, and the second connecting part 32 is provided with a second connecting hole 321. The first connecting hole 311 is thermally riveted to the first riveting post 61, and the second connecting hole 321 is thermally riveted to the second riveting post 62. The second connecting hole 321 is a notch opened on the side wall of the second connecting part 32 away from the first connecting part 31. Thus, when the battery pack 20, the insulating frame 60 and the busbar 30 are installed in the housing 10, multiple battery rows 21 are squeezed into the housing 10, and then the insulating frame 60 is installed in sequence. When the busbar 30 is connected to two adjacent insulating frames 60, it is riveted through the first connecting hole 311 and the first riveting post 61. Since the second connecting hole 321 has a notch, the movement of the busbar 30 can absorb the displacement deviation of the battery rows 21 when entering the housing, and avoid the busbar 30 getting stuck when positioning with the riveting post.

[0064] The aforementioned battery pack 100, by providing a first buffer structure 34 on the transition connection 33, can increase the structural strength of the entire busbar 30, and at the same time, the first buffer structure 34 disperses the tensile force received during movement; by providing a second buffer structure 414 on the support frame 41, the busbar 30 can be supported, and the second buffer structure 414 is set with the same shape as the first buffer structure 34, so that the first buffer pad 42 fits between the busbar 30 and the support frame 41, ensuring the stability of the support for the busbar 30; by providing an insulating layer 35 on the busbar 30, the electrical insulation effect between the busbar 30 and other components is increased, thereby increasing the pressure resistance of the busbar 30; by providing weight reduction holes 413 on the support frame 41, not only can the weight reduction effect be achieved, but also, since the support frame 41 is a plastic part, the setting of the weight reduction holes 413 prevents the support part 412 from deforming during demolding.

[0065] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A battery pack, characterized in that, include: Box; A battery pack, disposed within the housing, includes multiple battery columns arranged side by side, each battery column including batteries stacked along a first direction; The busbar includes a first connecting part, a second connecting part, and a transition connecting part connecting the first connecting part and the second connecting part. The first connecting part and the second connecting part are respectively connected to the batteries in two adjacent battery rows that are close to the housing along the first direction. The two ends of the transition connecting part are bent and connected to the first connecting part and the second connecting part respectively, so as to realize the electrical connection of the two adjacent battery rows. An insulating structure includes a support frame connected to the housing and supported by the transition connection portion.

2. The battery pack according to claim 1, characterized in that, The insulation structure further includes a first buffer pad, which is disposed between the busbar and the support frame; And / or, the insulation structure further includes a second buffer pad disposed on the side of the busbar away from the support frame.

3. The battery pack according to claim 2, characterized in that, The transition connection portion is at least partially provided with a first buffer structure, the first buffer structure including a recessed structure toward the support frame and / or an arched structure away from the support frame.

4. The battery pack according to claim 3, characterized in that, The support frame is provided with a second buffer structure, which corresponds to and cooperates with the first buffer structure. The upper and lower surfaces of the first buffer pad are respectively connected to the first buffer structure and the second buffer structure.

5. The battery pack according to any one of claims 1-4, characterized in that, The housing includes a crossbeam, the support frame is connected to the crossbeam, the support frame protrudes from the crossbeam on at least one side along the first direction, and the transition connection portion protrudes from the support frame on at least one side along the first direction.

6. The battery pack according to any one of claims 1-4, characterized in that, The surface of the transition connection is provided with an insulating layer, the thickness of which is h, h≥0.3mm.

7. The battery pack according to any one of claims 1-4, characterized in that, The support frame is provided with weight reduction holes, which penetrate the support frame along the first direction.

8. The battery pack according to claim 7, characterized in that, The top of the support frame is provided with a second buffer structure and the weight reduction hole is provided through it along the first direction.

9. The battery pack according to any one of claims 1-4, characterized in that, The bottom of the support frame is provided with a protruding mounting part, and the mounting part and the box body are riveted and fixed along the first direction.

10. The battery pack according to any one of claims 1-4, characterized in that, The battery pack includes at least two insulating frames, and the two insulating frames are respectively provided with a first riveting post and a second riveting post; The first connecting part is provided with a first connecting hole, and the second connecting part is provided with a second connecting hole. The first connecting hole is thermally riveted to the first riveting post, and the second connecting hole is thermally riveted to the second riveting post. The second connecting hole is a notch opened on the side wall of the second connecting part away from the first connecting part.

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