A protection structure, a conductive bar assembly and a battery pack

Abstract

The utility model belongs to power battery technical field discloses a protection structure, conducting rail subassembly and battery pack. Protection structure includes fixed part and protection part, the fixed part is used for fixing conducting rail, protection part is connected with fixed part, the installation cavity is formed in protection part, the end of protection part is formed with the open mouth that communicates with installation cavity close to fixed part, the open mouth is used for conducting rail to extend into the installation cavity, the other end of protection part is provided with the gap that communicates with installation cavity, the gap will protection part divide into two protection covers, two protection covers can mutually deviate and overturn, to increase the gap, the gap is used for exposing the connecting position of conducting rail. When needing to maintain the connecting position of conducting rail, can enlarge the gap through the turnover protection cover, maintains the connecting position through the gap, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a protective structure, a conductive busbar assembly, and a battery pack. Background Technology

[0002] The battery pack is the power source for electric vehicles. With the continuous development of new energy technologies, the storage capacity of battery packs is increasing, and the number of high-voltage lines inside the power battery is also increasing. As a high-voltage electrical component of the battery pack, the high-voltage connector is responsible for the power transmission between the battery pack and the vehicle, and is also an important component to ensure electrical safety performance.

[0003] High-voltage connectors have two busbar contacts. One end of the busbar contact mates with the vehicle end, while the other end is typically connected to the positive and negative busbars integrated within the battery pack via screws. In existing high-voltage connectors, the connection points to the busbars are exposed, posing a short-circuit risk.

[0004] To address the aforementioned issues, the industry typically uses heat shrink tubing for protection. However, heat shrink tubing is inconvenient for maintaining the busbar connection points and is difficult to operate. Utility Model Content

[0005] The purpose of this invention is to provide a protective structure, a conductive busbar assembly, and a battery pack, which can solve the problem of inconvenient maintenance when using heat shrink tubing for protection.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Firstly, this application provides a protection structure, including:

[0008] The fixing part is used to fix it to the conductive busbar;

[0009] A protective part is connected to the fixing part. A mounting cavity is formed inside the protective part. An opening communicating with the mounting cavity is formed at one end of the protective part near the fixing part. The opening is used for the conductive busbar to extend into the mounting cavity. The other end of the protective part is provided with a notch communicating with the mounting cavity. The notch divides the protective part into two protective covers. The two protective covers can be flipped away from each other to increase the notch. The notch is used to expose the connection position of the conductive busbar.

[0010] As an alternative to the above-mentioned protective structure, the fixing part includes a through fixing hole for interference fit with the conductive busbar.

[0011] As an optional embodiment of the above-mentioned protective structure, at least one inner wall of the fixing hole is provided with an anti-slip structure, wherein the friction coefficient of the anti-slip structure is ≥0.8;

[0012] The anti-slip structure consists of multiple protrusions arranged in an array at intervals.

[0013] As an optional embodiment of the above-mentioned protective structure, the fixing hole is a rectangular hole; the length direction of the fixing hole corresponds to the width direction of the conductive busbar, and the length of the fixing hole is 90%-95% of the width of the conductive busbar; the width direction of the fixing hole corresponds to the thickness direction of the conductive busbar, and the width of the fixing hole is 90%-95% of the thickness of the conductive busbar.

[0014] The opening direction of the fixing hole is perpendicular to the opening direction of the vent.

[0015] As an alternative to the above-mentioned protective structure, the protective part includes:

[0016] The first end face is disposed opposite to the opening;

[0017] The two sides are arranged opposite to each other. Each side of the first end face is connected to a side, and the side is perpendicular to the first end face.

[0018] The notch includes a first gap and a second gap. The first gap is formed on the first end face, and the second gap is formed on each of the side faces. The second gap includes a first slit and a second slit that are vertically connected. One end of the first slit communicates with the first gap, and the other end of the first slit communicates with the second slit. The second slit is arranged parallel to the first end face.

[0019] As an alternative to the above-mentioned protective structure, at least a portion of the protective part is made of an elastic material so that the protective cover can be flipped.

[0020] And / or, the fixing part and the protective part are integrally formed;

[0021] And / or, a reinforcing structure is provided at the connection position between the protective part and the fixing part.

[0022] Secondly, this application provides a conductive bus assembly, including a conductive bus and a protective structure as described in the first aspect. The conductive bus includes a body and connecting portions connected to both ends of the body, and the connecting portions at both ends are perpendicularly connected to the body. The fixing portion is connected to the body, and one of the connecting portions extends through the opening into the mounting cavity. The protective cover can be flipped open through the notch to expose the connecting portion.

[0023] As an alternative to the above-mentioned conductive bus assembly, the number of conductive buses is set to two, and the connection portion at the same end of the two conductive buses is respectively connected to the protective structure, and the two protective structures are staggered.

[0024] As an optional embodiment of the above-mentioned conductive busbar assembly, the staggered distance between the two protective structures is greater than or equal to 5mm;

[0025] The two protective structures are staggered at least along the first direction X and / or the second direction Y, and the two protective structures are arranged in the same direction or mirror images of each other along the third direction Z; the first direction X is the extension direction of the connecting part, the second direction Y is the width direction of the connecting part, and the third direction Z is the thickness direction of the connecting part.

[0026] Thirdly, this application provides a battery pack, including a housing, a high-voltage connector connected to the housing, and the conductive bus assembly described in the second aspect. The high-voltage connector includes a connector terminal extending into the mounting cavity, and the connecting portion of the conductive bus is connected to the connector terminal.

[0027] The beneficial effects of this utility model are:

[0028] In the protective structure provided by this utility model, the conductive busbar can be inserted into the installation cavity through the opening, and the protective part protects the conductive busbar and the connection position, avoiding the situation of short circuit due to the exposed conductive busbar; by setting a notch on the protective part, the protective part is divided into two protective covers. When it is necessary to maintain the connection position of the conductive busbar, the protective cover can be flipped to enlarge the notch, and the connection position can be maintained through the notch, which is convenient to operate.

[0029] The conductive busbar assembly and battery pack provided by this utility model adopt the above-mentioned protection structure, which can solve the problem of inconvenient maintenance. Attached Figure Description

[0030] Figure 1 This is a first schematic diagram of the housing, conductive busbar assembly and high-voltage connector provided by this utility model;

[0031] Figure 2 This is a partial structural schematic diagram of the battery pack provided by this utility model;

[0032] Figure 3 This is a first structural schematic diagram of the conductive busbar and protective structure provided by this utility model;

[0033] Figure 4 This is a schematic diagram of the second structure of the conductive busbar and protective structure provided by this utility model;

[0034] Figure 5 This is a first structural schematic diagram of the protective structure provided by this utility model;

[0035] Figure 6 This is a schematic diagram of the second structure of the protective structure provided by this utility model;

[0036] Figure 7 This is a structural schematic diagram of the housing and high-voltage connector provided by this utility model;

[0037] Figure 8 This is a second structural schematic diagram of the housing, conductive busbar assembly, and high-voltage connector provided by this utility model;

[0038] In the picture:

[0039] 100. Protective structure; 10. Fixing part; 11. Fixing hole; 12. Anti-slip structure; 20. Protective part; 21. Protective cover; 22. Notch; 221. First gap; 222. First slit; 223. Second slit; 200. Box body; 201. Base plate; 202. Side frame; 203. Crossbeam; 204. Longitudinal beam; 205. Fixing component; 300. High voltage connector; 301. First terminal; 302. Second terminal; 400. Conductive busbar; 400a. First conductive busbar; 400b. Second conductive busbar; 410. Body; 420. Connecting part. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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.

[0042] In the description of this utility model, unless otherwise expressly 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.

[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] like Figure 1 and Figure 2 As shown, this utility model provides a battery pack, including a housing 200, a high-voltage connector 300 connected to the housing 200, and a conductive bus assembly. The high-voltage connector 300 includes a connector terminal, and the conductive bus assembly includes a conductive bus 400. The connector terminal is connected to the conductive bus 400.

[0045] To protect the connection between the conductive bus 400 and the connector terminals and prevent short circuits, such as... Figure 3 and Figure 4 As shown, the busbar assembly also includes a protective structure 100. The busbar 400 includes a body 410 and connecting portions 420 connected to both ends of the body 410. The connecting portions 420 are connected to the connector terminals of the high-voltage connector 300. The protective structure 100 can cover the connecting portions 420 and the connector terminals to protect them. The protective structure 100 can be opened under external force to facilitate the installation or disassembly of the connection between the connecting portions 420 and the connector terminals.

[0046] Specifically, such as Figure 5 As shown, the protective structure 100 includes a connecting fixing part 10 and a protective part 20. The fixing part 10 is fixed to the conductive bus 400. The protective part 20 has a mounting cavity. One end of the protective part 20 near the fixing part 10 has an opening communicating with the mounting cavity. The connecting part 420 of the conductive bus 400 extends into the mounting cavity through the opening. The other end of the protective part 20 has a notch 22 communicating with the mounting cavity. The connector terminal of the high-voltage connector 300 extends into the mounting cavity through the notch 22. The notch 22 divides the protective part 20 into two protective covers 21. The two protective covers 21 can be flipped away from each other to increase the notch 22, thereby facilitating the exposure of the connecting part 420 and the connector terminal through the notch 22, and thus facilitating maintenance of the connection position.

[0047] In the protective structure 100 provided in this embodiment, the protective part 20 uses two protective covers 21 to protect the connection position of the connecting part 420 and the connector terminal, providing more comprehensive protection. When the protective covers 21 are not subjected to external force, the mounting cavity only has a notch 22 communicating with the outside. The notch 22 is small in size, making it difficult for external structures to extend into the mounting cavity, thereby improving the protection effect on the connection position of the connecting part 420 and the connector terminal. At the same time, it also has the effect of insulating other components to prevent short circuits. When it is necessary to maintain the connection position of the connecting part 420 and the connector terminal, the size of the notch 22 can be increased by prying open one side of the protective cover 21, exposing the connection position of the connecting part 420 and the connector terminal, making operation convenient.

[0048] To facilitate the two protective covers 21 to flip back to back, at least a portion of the protective part 20 is made of an elastic material, allowing the protective cover 21 to be flipped. In this embodiment, the entire protective part 20 is made of an elastic material, which simplifies the structure and processing of the protective part 20 while ensuring that the two protective covers 21 can flip back to back, thereby reducing costs.

[0049] In some other embodiments, only one end of the protective cover 21 that is bent may be made of an elastic material, as long as it can ensure that the two protective covers 21 can be flipped back to back.

[0050] To facilitate the connection and fixation of the fixing part 10 and the conductive bus 400, such as Figure 5 As shown, the fixing part 10 is provided with a through fixing hole 11, which is press-fitted with the conductive bus 400. Specifically, the body 410 of the conductive bus 400 passes through the fixing hole 11 and is press-fitted with the fixing hole 11 to fix the fixing part 10 and the conductive bus 400. This method of fixing is convenient, does not require additional connecting parts, and helps to simplify the structure and reduce costs.

[0051] To improve the fixing effect between the fixing part 10 and the conductive busbar 400, an anti-slip structure 12 is provided on at least one inner wall of the fixing hole 11. The friction coefficient of the anti-slip structure 12 is ≥0.8. By providing the anti-slip structure 12, the friction coefficient is increased, thereby increasing the frictional force at the contact point between the fixing part 10 and the conductive busbar 400, and preventing relative movement between the fixing part 10 and the conductive busbar 400.

[0052] In this embodiment, the anti-slip structure 12 consists of multiple protrusions arranged in an array at intervals to increase the surface friction coefficient. In other embodiments, the anti-slip structure 12 may be an anti-slip pattern or an anti-slip layer made of a material with a high coefficient of friction.

[0053] To improve the fixing effect of the interference fit, the size of the fixing hole 11 is smaller than the corresponding size of the conductive busbar 400. Specifically, given the flat structure of the conductive busbar 400, the fixing hole 11 is a rectangular hole. The length direction of the fixing hole 11 corresponds to the width direction of the conductive busbar 400, and the length of the fixing hole 11 is 90%-95% of the width of the conductive busbar 400, that is, the length of the fixing hole 11 is 90%-95% of the width of the body 410. The width direction of the fixing hole 11 corresponds to the thickness direction of the conductive busbar 400, and the width of the fixing hole 11 is 90%-95% of the thickness of the conductive busbar 400, that is, the width of the fixing hole 11 is 90%-95% of the thickness of the body 410.

[0054] For example, the length of the fixing hole 11 is 90%, 91%, 92%, 93%, 94%, or 95% of the width of the conductive bus 400. The width of the fixing hole 11 is 90%, 91%, 92%, 93%, 94%, or 95% of the thickness of the conductive bus 400.

[0055] It should be noted that the interference fit between the conductive busbar 400 and the fixing hole 11 can be set according to actual needs, and there is no restriction here.

[0056] To ensure the interference fit, the fixing part 10 can also be made of an elastic material. This makes the fixing part 10 itself elastic, and the size of the fixing hole 11 can be deformed and enlarged. On the one hand, this facilitates the assembly and disassembly of the fixing hole 11 and the conductive bus 400, and on the other hand, it can provide preload force for the interference fit between the fixing hole 11 and the conductive bus 400.

[0057] In this embodiment, both the fixing part 10 and the protective part 20 are made of elastic material, allowing them to be integrally molded, simplifying the manufacturing process. Specifically, the protective structure 100 is made of silicone, which maintains good elasticity, corrosion resistance, and flame retardant properties within a temperature range of -40℃ to 150℃, providing good insulation protection for the connection points of the connecting part 420 and the connecting terminals. Optionally, the protective structure 100 can be made of UV silicone, suitable for outdoor battery packs, extending its service life to more than 10 years.

[0058] In some other embodiments, the fixing part 10 and the conductive bus 400 can also be fixed by fasteners such as screws and clamps, or by snap-fit, and there is no limitation here.

[0059] To improve the strength of the protective structure 100, a reinforcing structure is provided at the connection between the protective part 20 and the fixing part 10. By providing the reinforcing structure, the connection strength between the fixing part 10 and the protective part 20 can be improved, thereby enhancing the reliability of the protective structure 100 and preventing tearing and damage at the connection between the fixing part 10 and the protective part 20 caused by frequent flipping of the protective cover 21.

[0060] In this embodiment, a reinforcing structure is formed by increasing the thickness of the connection between the fixing part 10 and the protective part 20 to improve the connection strength. In other embodiments, the reinforcing structure can be a reinforcing rib or other reinforcing protrusion, as long as it can improve the connection strength between the fixing part 10 and the protective part 20.

[0061] In this embodiment, the opening direction of the fixing hole 11 is perpendicular to the opening direction of the vent, and correspondingly, the connecting part 420 is perpendicularly connected to the body 410. This allows the body 410 to be inserted through the fixing hole 11 with an interference fit, and the connecting part 420 needs to be bent relative to the body 410 before extending into the mounting cavity through the vent. This arrangement helps prevent the protective structure 100 from detaching from the conductive busbar 400, thus improving the fixing effect.

[0062] like Figure 5 and Figure 6 As shown, the protective part 20 includes a first end face and two oppositely arranged side faces, with the first end face opposite to the opening. Each opposite side of the first end face is connected to a side face, and the side faces are perpendicularly connected to the first end face. The notch 22 includes a first gap 221 and a second gap. The first gap 221 is formed on the first end face, and the second gap is formed on each side face. The second gap includes a first slit 222 and a second slit 223 that are perpendicularly connected. One end of the first slit 222 communicates with the first gap 221, and the other end of the first slit 222 communicates with the second slit 223. The second slit 223 is parallel to the first end face. In this embodiment, the second gap is T-shaped. By providing the first slit 222, the protective part 20 is divided into two protective covers 21. By providing the second slit 223, deformation space is provided for the two protective covers 21 to flip back and forth, which helps to increase the notch 22 and facilitates maintenance of the internal structure of the mounting cavity.

[0063] Combination Figure 2 As shown, the conductive bus assembly includes two conductive buses 400, namely a first conductive bus 400a and a second conductive bus 400b. The first conductive bus 400a and the second conductive bus 400b serve as the positive and negative output conductive buses, respectively, and are connected to an external structure via high-voltage connectors 300. The first conductive bus 400a and the second conductive bus 400b are each connected to a protective structure 100 to protect the connection points between them and the mating terminals.

[0064] To make efficient use of the space inside the battery pack, the protective structures 100 connected by the two conductive bars 400 are staggered to provide operating space for the flipping of the protective cover 21 in each protective structure 100, thereby facilitating maintenance.

[0065] To provide sufficient operating space, the two protective structures 100 are staggered by a distance greater than or equal to 5 mm. Specifically, the staggered distance is the distance along the staggered direction.

[0066] Preferably, such as Figure 3 and Figure 4 As shown, the two protective structures 100 are staggered at least along the first direction X and / or the second direction Y, and the two protective structures 100 are arranged in the same direction or mirror images of each other along the third direction Z. In this embodiment, the first direction X is the extending direction of the connecting portion 420, the second direction Y is the width direction of the connecting portion 420, and the third direction Z is the thickness direction of the connecting portion 420.

[0067] In some embodiments, the body 410 is generally parallel to the YZ plane, the connecting portion 420 extends along the first direction X, the second direction Y is the width direction of the connecting portion 420, and the third direction Z is the thickness direction of the connecting portion 420. The two protective structures 100 are staggered along both the first direction X and the second direction Y to reduce the overlap of the two protective structures 100, thereby providing sufficient operating space for each protective structure 100.

[0068] In other embodiments, the two protective structures 100 may be offset along the first direction X, or offset only along the second direction Y, depending on the space within the battery pack.

[0069] Furthermore, the two protective structures 100 are set in the same direction or mirrored along the third direction Z, which can adapt to the internal layout of the battery pack. The same direction setting can be attached to the same side mounting surface, and the mirrored setting can be adapted to symmetrical assembly scenarios, flexibly matching different spatial layout requirements.

[0070] It should be noted here that the two protective structures 100 are arranged in the same direction along the third direction Z, meaning that, for example... Figure 3 As shown, in both protective structures 100, the fixing part 10 is located at the same end of the protective part 20 along the third direction Z. At this time, the distance between the two protective structures 100 along the third direction Z is relatively large, so as to ensure that each protective structure 100 has sufficient space for operation.

[0071] like Figure 4 As shown, the two protective structures 100 are arranged in a mirror image along the third direction Z, meaning that the fixing part 10 of one of the two protective structures 100 is located at one end of the protective part 20 along the third direction Z, and the fixing part 10 of the other protective structure 100 is located at the opposite end of the protective part 20 along the third direction Z. This arrangement allows for a smaller distance between the two protective structures 100 along the third direction Z, resulting in a more compact layout of the two protective structures 100.

[0072] To ensure that the protective structures 100 are staggered, such as Figure 7As shown, the connector terminals of the two high-voltage connectors 300 connected to the same conductive bus assembly are staggered. For ease of explanation, the two connector terminals are designated as first terminal 301 and second terminal 302. First terminal 301 and second terminal 302 are spaced apart along the third direction Z and staggered along the first direction X and / or the second direction Y, so that the connecting part 420 and the corresponding protective structure 100 are staggered.

[0073] like Figure 8 As shown, the housing 200 includes a base plate 201 and a side frame 202. The side frame 202 is arranged circumferentially around the base plate 201 to form a cavity for accommodating individual battery cells. The housing 200 also includes a fastener 205, which fixes the conductive busbar 400 to the inner wall of the side frame 202 to secure the conductive busbar 400. This helps to ensure the stability of the conductive busbar 400's position and thus ensures the connection effect between the conductive busbar 400 and the high-voltage connector 300.

[0074] Optionally, the fastener 205 may include a base and a fixing sleeve. The fixing sleeve is fitted onto the conductive busbar 400 and connected to the base. The base is connected to the side frame 202 to fix the conductive busbar 400.

[0075] Optionally, the base and side frame 202 can be fixed together by screws.

[0076] To facilitate the rational arrangement of battery cells, the housing 200 also includes a crossbeam 203 and a longitudinal beam 204. The crossbeam 203 and the longitudinal beam 204 are arranged in a cross pattern, which, together with the side frame 202, form multiple battery compartments, each of which contains multiple battery cells.

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A protective structure, characterized in that, include: A fixing part (10) is used to fix it to the conductive bus (400); The protective part (20) is connected to the fixing part (10). An installation cavity is formed inside the protective part (20). An opening communicating with the installation cavity is formed at one end of the protective part (20) near the fixing part (10). The opening is used for the conductive bus (400) to extend into the installation cavity. A notch (22) communicating with the installation cavity is provided at the other end of the protective part (20). The notch (22) divides the protective part (20) into two protective covers (21). The two protective covers (21) can be flipped away from each other to increase the notch (22). The notch (22) is used to expose the connection position of the conductive bus (400).

2. The protective structure according to claim 1, characterized in that, The fixing part (10) includes a through fixing hole (11) for interference fit with the conductive busbar (400).

3. The protective structure according to claim 2, characterized in that, At least one inner wall of the fixing hole (11) is provided with an anti-slip structure (12), and the friction coefficient of the anti-slip structure (12) is ≥0.8; The anti-slip structure (12) consists of multiple protrusions arranged in an array at intervals.

4. The protective structure according to claim 3, characterized in that, The fixing hole (11) is a rectangular hole; the length direction of the fixing hole (11) corresponds to the width direction of the conductive busbar (400), and the length of the fixing hole (11) is 90%-95% of the width of the conductive busbar (400); the width direction of the fixing hole (11) corresponds to the thickness direction of the conductive busbar (400), and the width of the fixing hole (11) is 90%-95% of the thickness of the conductive busbar (400); The opening direction of the fixing hole (11) is perpendicular to the opening direction of the opening.

5. The protective structure according to any one of claims 1-4, characterized in that, The protective part (20) includes: The first end face is disposed opposite to the opening; The two sides are arranged opposite to each other. Each side of the first end face is connected to a side, and the side is perpendicular to the first end face. The notch (22) includes a first gap (221) and a second gap. The first gap (221) is opened on the first end face, and the second gap is opened on each of the side faces. The second gap includes a first slit (222) and a second slit (223) that are vertically connected. One end of the first slit (222) is connected to the first gap (221), and the other end of the first slit (222) is connected to the second slit (223). The second slit (223) is arranged parallel to the first end face.

6. The protective structure according to any one of claims 1-4, characterized in that, At least a portion of the protective portion (20) is made of an elastic material so that the protective cover (21) can be flipped up; And / or, the fixing part (10) and the protective part (20) are integrally formed; And / or, the connection position between the protective part (20) and the fixing part (10) is provided with a reinforcing structure.

7. A conductive bus assembly, characterized in that, The device includes a conductive bus (400) and a protective structure (100) as described in any one of claims 1-6. The conductive bus (400) includes a body (410) and connecting portions (420) connected to both ends of the body (410). The connecting portions (420) at both ends are perpendicularly connected to the body (410). The fixing portion (10) is connected to the body (410). One of the connecting portions (420) extends into the mounting cavity through the opening. The protective cover (21) can be flipped open through the notch (22) to expose the connecting portion (420).

8. The conductive bus assembly according to claim 7, characterized in that, The number of conductive busbars (400) is set to two, and the connecting part (420) at the same end of the two conductive busbars (400) is respectively connected to the protective structure (100), and the two protective structures (100) are staggered.

9. The busbar assembly according to claim 8, characterized in that, The two protective structures (100) are staggered by a distance greater than or equal to 5 mm; The two protective structures (100) are staggered at least along the first direction X and / or the second direction Y, and the two protective structures (100) are arranged in the same direction or mirrored along the third direction Z; the first direction X is the extension direction of the connecting part (420), the second direction Y is the width direction of the connecting part (420), and the third direction Z is the thickness direction of the connecting part (420).

10. A battery pack, characterized in that, The assembly includes a housing (200), a high-voltage connector (300) connected to the housing (200), and a busbar assembly as claimed in any one of claims 7-9, wherein the high-voltage connector (300) includes a connector terminal extending into the mounting cavity, and a connecting portion (420) of the busbar (400) is connected to the connector terminal.

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