Top cover, battery pack and electrical equipment

Abstract

This application provides a top cover, a battery pack, and an electrical device, relating to the field of power battery technology. The top cover provided by this application includes: a main body and a first reinforcing part; the main body is at least used for connection with a tray, with a first surface of the main body facing outwards from the tray and a second surface of the main body facing inwards from the tray; the first reinforcing part is disposed on the main body and protrudes relative to the first surface of the main body to form a limiting groove, which is used to accommodate copper busbars of electrical components. By providing the first reinforcing part on the main body and forming the limiting groove, the copper busbars can be accurately accommodated and fixed, preventing displacement, twisting, or vibration of the copper busbars during battery pack operation, ensuring the reliability and stability of the electrical connection, thereby reducing safety hazards of the battery pack. Furthermore, the first reinforcing part enhances the overall rigidity of the main body, preventing deformation of the main body due to external forces, and further improving the protection effect on the cell modules and electrical components.

Description

Technical Field

[0001] This application relates to power battery technology, and more particularly to a cover, battery pack and electrical device. Background Technology

[0002] In recent years, the electric vehicle industry has developed rapidly. As an important component of electric vehicles, the battery pack not only affects the performance and safety of electric vehicles, but also directly impacts their market competitiveness and sustainable development.

[0003] In related technologies, a battery pack includes a frame, and battery cell modules and electrical components placed inside the frame. To improve the safety of the battery pack, the battery pack also includes a top cover, which together with the frame encloses a space for encapsulating and protecting the battery cell modules and electrical components.

[0004] However, the existing top cover structure has low strength, which affects the safety of the battery pack's internal cell modules and electrical components, posing a safety hazard. Utility Model Content

[0005] In view of this, this application provides a top cover, a battery pack, and an electrical device, aiming to improve the structural strength of the bottom protection plate, thereby improving the safety of the battery pack.

[0006] To achieve the above objectives, this application provides a top cover, a battery pack, and an electrical device, which adopt the following technical solution:

[0007] In a first aspect, this application provides a top cover disposed on a tray, wherein the top cover and the tray are capable of jointly encapsulating electrical components and battery cell modules inside the tray, the top cover comprising:

[0008] A body, at least for connection with the tray, having a first surface facing outwards from the tray and a second surface facing inwards from the tray;

[0009] A first reinforcing portion is disposed on the main body and protrudes from a first surface of the main body to form a limiting groove recessed from a second surface of the main body. The limiting groove is at least used to accommodate the copper busbar of the electrical component.

[0010] In one possible implementation, the top cover provided in this application has the first reinforcing part extending in a direction parallel to the length direction of the main body, and the length of the limiting groove being the same as the length of the main body.

[0011] In one possible implementation, the top cover provided in this application has at least two first reinforcing parts, and the two limiting grooves are arranged at intervals along the width direction of the main body.

[0012] In one possible implementation, the top cover provided in this application further includes a second reinforcing portion, which is disposed on the main body and protrudes from the first surface of the main body.

[0013] The second reinforcing part extends along the width direction of the main body and is arranged intersecting with the first reinforcing part.

[0014] In one possible implementation, the top cover provided in this application has a plurality of second reinforcing parts, and the plurality of second reinforcing parts are arranged along the length direction of the main body;

[0015] The second reinforcing part and the first reinforcing part together form multiple reinforcing areas on the main body.

[0016] In one possible implementation, the top cover provided in this application includes a first region and a second region among the plurality of ribbed regions;

[0017] The first region is located on one side of the first reinforcing part in the length direction of the main body, and the second region is located on the other side of the first reinforcing part in the length direction of the main body.

[0018] In one possible implementation, the top cover provided in this application has at least one first square reinforcing part and at least one bent reinforcing part in the first region;

[0019] And / or, the second region is provided with at least one strip-shaped reinforcing portion and at least one second square reinforcing portion.

[0020] In one possible implementation, the cover provided in this application also includes a connecting portion;

[0021] The connecting portion is disposed around the periphery of the body and extends toward the second surface of the body. The body is used to connect with the tray via the connecting portion.

[0022] Secondly, this application provides a battery pack, including a tray, a cell module, electrical components, and the aforementioned top cover.

[0023] Thirdly, this application provides an electrical device, including the aforementioned top cover or the aforementioned battery pack.

[0024] The top cover provided in this application is disposed on a tray. The top cover and the tray can jointly encapsulate the electrical components and battery cell modules inside the tray. The top cover includes: a main body and a first reinforcing part; the main body is at least used to connect with the tray, the first surface of the main body is used to face the outside of the tray, and the second surface of the main body is used to face the inside of the tray; the first reinforcing part is disposed on the main body, and the first reinforcing part is provided to protrude relative to the first surface of the main body to form a limiting groove that is recessed relative to the second surface of the main body. The limiting groove is at least used to accommodate the copper busbar of the electrical components.

[0025] By providing a first reinforcing part on the main body, which protrudes from the first surface of the main body and forms a limiting groove recessed from the second surface of the main body, the limiting groove is used to accommodate at least the copper busbar of the electrical components. The limiting groove can accurately accommodate and fix the copper busbar, preventing it from shifting, twisting, or vibrating during battery pack operation. This avoids problems such as poor circuit contact and short circuits caused by changes in the position of the copper busbar, ensuring the reliability and stability of the electrical connection and thus reducing safety hazards of the battery pack. In addition, the first reinforcing part enhances the overall rigidity of the main body, preventing deformation caused by external forces. This further ensures the stability of the cell modules and electrical components inside the tray, improving the protection effect for the cell modules and electrical components.

[0026] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the technical solutions provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0027] The specific embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this application, and this application is not limited to the specific embodiments described below.

[0028] Figure 1 This is a schematic diagram of the battery pack provided in this application;

[0029] Figure 2 A schematic diagram of the structure of the top cover provided in this application;

[0030] Figure 3 A partial cross-sectional structural diagram of the first reinforcing part provided in this application;

[0031] Figure 4 for Figure 1 Explosion structure diagram Figure 1 ;

[0032] Figure 5 for Figure 1 Explosion structure diagram Figure 2 .

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Top cover; 20. Tray; 30. Electrical components; 40. Battery cell module; 50. Copper busbar;

[0035] 100. Main body; 101. First surface; 102. Second surface; 103. Limiting groove;

[0036] 200. First Reinforced Section;

[0037] 300. Second Reinforced Section;

[0038] 400. First region; 410. First square reinforcement; 420. Bending reinforcement;

[0039] 500, Second region; 510, Strip-shaped reinforcement; 520, Second square reinforcement;

[0040] 600. Connecting part;

[0041] 700. Buffer components.

[0042] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0044] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application 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 application.

[0046] In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise specified precisely.

[0047] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0048] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0049] In recent years, the electric vehicle industry has shown rapid development. The battery pack plays a crucial role in the composition of an electric vehicle; it is not only a key factor influencing the performance and safety of the vehicle, but also directly related to its market competitiveness and the sustainable development of the industry.

[0050] At the technical level, a battery pack mainly consists of a frame, battery cell modules housed within the frame, and electrical components. To effectively improve the safety performance of the battery pack, a bottom protective plate and a top cover are also provided. The bottom protective plate, top cover, and frame work together to create a space for encapsulating and protecting the battery cell modules and electrical components.

[0051] However, the existing battery cover currently suffers from low structural strength. During normal operation, electric vehicles may encounter various unforeseen circumstances leading to collisions. This can affect the safety of the battery pack; damage to the cover directly impacts the safety of the internal battery cells and electrical components, creating a potential safety hazard.

[0052] Based on the above-mentioned technical problems, this application provides a top cover, a battery pack, and an electrical device. In this technical solution, the top cover provided by this application is disposed on a tray, and the top cover and the tray can jointly encapsulate the electrical components and battery cell modules inside the tray. The top cover includes: a main body and a first reinforcing part; the main body is at least used to connect with the tray, the first surface of the main body is used to face the outside of the tray, and the second surface of the main body is used to face the inside of the tray; the first reinforcing part is disposed on the main body, and the first reinforcing part protrudes relative to the first surface of the main body to form a limiting groove that is recessed relative to the second surface of the main body, and the limiting groove is at least used to accommodate the copper busbar of the electrical components.

[0053] By providing a first reinforcing part on the main body, which protrudes from the first surface of the main body and forms a limiting groove recessed from the second surface of the main body, the limiting groove is used to accommodate at least the copper busbar of the electrical components. The limiting groove can accurately accommodate and fix the copper busbar, preventing it from shifting, twisting, or vibrating during battery pack operation. This avoids problems such as poor circuit contact and short circuits caused by changes in the position of the copper busbar, ensuring the reliability and stability of the electrical connection and thus reducing safety hazards of the battery pack. In addition, the first reinforcing part enhances the overall rigidity of the main body, preventing deformation caused by external forces. This further ensures the stability of the cell modules and electrical components inside the tray, improving the protection effect for the cell modules and electrical components.

[0054] It should be noted that, Figures 1 to 5 This diagram illustrates a simplified representation of the top cover, battery pack, and components within the electrical device. The specific structures of the top cover, battery pack, and other components within the electrical device are not limited to these details. Figures 1 to 5 of examples.

[0055] in addition, Figures 1 to 5 The X, Y, and Z arrows shown (if they exist) are perpendicular to each other in three-dimensional space.

[0056] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0057] Reference Figures 1 to 5As shown, this application embodiment provides a top cover 10, which covers a tray 20. The top cover 10 and the tray 20 can jointly encapsulate the electrical components 30 and the battery cell module 40 inside the tray 20. In related technical fields, battery packs have a tray 20, and this application embodiment does not limit the specific structure of the tray 20.

[0058] The top cover 10 provided in this embodiment includes:

[0059] The body 100 is at least used for connection with the tray 20, with a first surface 101 of the body 100 facing outwards from the tray 20 and a second surface 102 facing inwards from the tray 20. It is understood that, with reference to... Figure 1 As shown, the first surface 101 of the main body 100 can form the top surface of the battery pack, and the second surface 102 of the main body 100 faces the interior of the battery pack.

[0060] A first reinforcing portion 200 is provided on the main body 100, and the first reinforcing portion 200 protrudes from the first surface 101 of the main body 100 to form a limiting groove 103 recessed from the second surface 102 of the main body 100. The limiting groove 103 is at least used to accommodate the copper busbar 50 of the electrical component 30. Figure 3 As shown, the first reinforcing part 200 is in Figure 3 The height in the direction of the Z-arrow is greater than the height of the first surface 101 of the main body 100 in the direction of the Z-arrow.

[0061] By providing a first reinforcing part 200 on the main body 100, the first reinforcing part 200 protrudes from the first surface 101 of the main body 100, forming a limiting groove 103 recessed from the second surface 102 of the main body 100. The limiting groove 103 is used to accommodate at least the copper busbar 50 of the electrical component 30. The limiting groove 103 can accurately accommodate and fix the copper busbar 50, preventing the copper busbar 50 from shifting, twisting, or vibrating during battery pack operation. This avoids problems such as poor circuit contact and short circuits caused by changes in the position of the copper busbar 50, ensuring the reliability and stability of the electrical connection, thereby reducing the safety hazards of the battery pack. In addition, the first reinforcing part 200 enhances the overall rigidity of the main body 100, preventing the main body 100 from deforming due to external forces. This further ensures the stability of the cell module 40 and electrical component 30 inside the tray 20, improving the protection effect for the cell module 40 and electrical component 30.

[0062] Electrical components 30 in the battery pack include, but are not limited to, the Battery Disconnection Unit (BDU), a key component specifically designed for the inside of the battery pack and belonging to a type of high-voltage distribution box. The main function of the BDU is to provide power management and protection functions for the high-voltage system. The BDU has a copper busbar 50, and this application does not limit the specific structure of electrical components 30.

[0063] To improve the stability of the copper busbar 50, a buffer 700 is provided between the copper busbar 50 and the bottom of the limiting groove 103. The buffer 700 can be a rubber pad or foam to dampen the copper busbar 50, improve its stability, and also provide a certain degree of insulation protection.

[0064] In one possible implementation, the extension direction of the first reinforcing part 200 is parallel to the length direction of the main body 100, and the length of the limiting groove 103 is the same as the length of the main body 100.

[0065] The first reinforcing part 200 extends parallel to the length direction of the main body 100, and the length of the limiting groove 103 is the same as the length of the main body 100. This design allows the reinforcing part to form a continuous and complete support structure along the length direction of the main body 100. When the battery pack is subjected to external forces, such as bumps or collisions during the operation of an electric vehicle, the first reinforcing part 200 can more effectively disperse and bear these external forces, preventing the top cover 10 from deforming or cracking due to excessive local stress, thereby significantly improving the overall structural stability of the top cover 10.

[0066] Because the length of the limiting groove 103 is the same as the length of the main body 100, the copper busbar 50 of the electrical component 30 can be fully accommodated and protected within the limiting groove 103. Whether during battery pack installation or during subsequent long-term use, the copper busbar 50 can always remain in the correct position within the limiting groove 103, avoiding potential safety hazards such as poor wiring contact and short circuits caused by the copper busbar 50 shaking or shifting. This ensures the stability and reliability of the electrical connection, thereby improving the safety and performance of the entire battery pack.

[0067] Furthermore, compared to complex or discontinuous first reinforcing sections 200, the first reinforcing section 200, which is parallel to and of equal length to the main body 100, is easier to manufacture through processes such as molding, cutting, and bending, thus reducing production difficulty and costs. At the same time, the consistency and regularity of the limiting groove 103 also contribute to improved production efficiency and ensured product quality stability.

[0068] In one possible implementation, the first reinforcing portion 200 is provided with at least two, and the two limiting grooves 103 are arranged at intervals along the width direction of the main body 100. Specifically, the width direction of the main body 100 is... Figure 1 The direction of the Y-arrow in the middle.

[0069] With the above-described arrangement, the first reinforcing part 200 has at least two limiting grooves 103 spaced apart along the width direction of the main body 100. This allows the top cover 10 to provide multiple independent accommodating spaces for the copper busbars 50 of the electrical components 30, facilitating partitioned placement according to the size, shape, and functional requirements of different electrical components 30. This avoids mutual interference between the copper busbars 50, improving the overall working efficiency and stability of the electrical system inside the battery pack. In related technologies, the electrical components 30 typically have two copper busbars 50 used for high-voltage power transmission: a positive copper busbar 50 and a negative copper busbar 50, so that the multiple limiting grooves 103 can accommodate different copper busbars 50 respectively, improving the adaptability of the top cover 10.

[0070] In one possible implementation, a second reinforcing part 300 is also included. The second reinforcing part 300 is disposed on the main body 100 and protrudes from the first surface 101 of the main body 100.

[0071] The second reinforcing part 300 extends along the width direction of the main body 100, and the second reinforcing part 300 is intersected with the first reinforcing part 200.

[0072] In the above embodiment, the second reinforcing part 300 is provided on the main body 100 and protrudes from the first surface 101 of the main body 100. This makes the second reinforcing part 300 on the upper cover 10 form an additional reinforcing structure, which can significantly improve the bending and deformation resistance of the upper cover 10.

[0073] The limiting groove 103 formed by the first reinforcing part 200 not only accommodates the copper busbar 50 of the electrical component 30, serving to position and protect the copper busbar 50, but also, due to the presence of the second reinforcing part 300, makes the structure around the limiting groove 103 more stable. This provides a safer and more reliable installation environment for the copper busbar 50, and the stable limiting groove 103 structure also facilitates the wiring and connection of the electrical component 30, improving production efficiency and product quality.

[0074] In one possible implementation, there are multiple second reinforcing portions 300, and the multiple second reinforcing portions 300 are arranged along the length direction of the main body 100. Figure 1 Extending in the direction of the Y-arrow, multiple second reinforcing sections 300 are along... Figure 1 The arrangement is oriented in the direction of the X-arrow.

[0075] The second reinforcing section 300 and the first reinforcing section 200 form multiple reinforcing rib areas on the main body 100. For specific implementation, refer to... Figure 2 As shown, the second reinforcing part 300 is intersected with the first reinforcing part 200 to divide the main body 100 into multiple reinforcing areas.

[0076] In one specific implementation, the first reinforcing part 200 and the second reinforcing part 300 are arranged perpendicularly to form a "well"-shaped cross structure, which further improves the structural strength of the top cover 10 and can better protect the battery cell module 40 and electrical components 30 inside the tray 20, reducing the risk of damage to internal components due to deformation.

[0077] By setting a first reinforcing part 200 and a second reinforcing part 300 extending in different directions on the main body 100 and forming a stable structure at the intersection, the space on the main body 100 is more rationally divided and utilized.

[0078] The second reinforcing part 300 is configured in multiple ways and arranged along the length of the main body 100. This results in multiple continuous reinforcing lines on the top cover 10 along its length, which can effectively disperse and bear the external forces from the length direction that the battery pack is subjected to during use, such as inertial forces and vibration forces during vehicle operation. This greatly improves the bending and tensile strength of the top cover 10 along its length, and enhances the overall structural strength and stability of the top cover 10.

[0079] Multiple second reinforcing parts 300 and first reinforcing parts 200 form multiple ribbed areas on the main body 100. This allows the various parts of the top cover 10 to connect and support each other, forming an integral structure. When the battery pack is subjected to external forces, the forces can be evenly distributed and transmitted within the multiple ribbed areas, avoiding stress concentration and further improving the load-bearing capacity and deformation resistance of the top cover 10.

[0080] In one possible implementation, refer to Figure 2 As shown, the multiple reinforcing bar areas include a first area 400 and a second area 500.

[0081] The first region 400 is located on one side of the first reinforcing part 200 in the length direction of the main body 100, and the second region 500 is located on the other side of the first reinforcing part 200 in the length direction of the main body 100.

[0082] The multiple reinforcing rib areas are clearly divided into a first region 400 and a second region 500, located on both sides of the first reinforcing part 200 along the length of the main body 100. This makes the structural design of the cover 10 more refined and rational, allowing for targeted reinforcement design based on the stress characteristics and functional requirements of different regions. The setting of the first region 400 and the second region 500 helps to better disperse and transmit external forces, thereby improving the overall structural strength and stability of the cover 10 by increasing the number of reinforcing ribs.

[0083] In one possible implementation, please continue to refer to Figure 1 and Figure 2 As shown, the first region 400 is provided with at least one first square reinforcing part 410 and at least one bent reinforcing part 420.

[0084] And / or, the second region 500 is provided with at least one strip-shaped reinforcing portion 510 and at least one second square reinforcing portion 520.

[0085] The square reinforcement section possesses high geometric stability and load-bearing capacity. The four right angles and straight sides of the square effectively disperse and withstand external forces from different directions, allowing the cover 10 to distribute and disperse forces more evenly when subjected to pressure, tension, or impact. The bent reinforcement section 420 can be rationally designed based on the remaining space within the first region 400, fully utilizing the reinforcing surfaces within the first region 400 and increasing the reinforcing area. For example, on the same side of the second reinforcement section 300, the bent reinforcement section 420 is L-shaped, with multiple bent reinforcement sections 420 facing each other end-to-end. On both sides of the second reinforcement section 300, the bent reinforcement sections 420 are symmetrically arranged relative to the second reinforcement section 300. This further reduces stress concentration and improves the structural strength of the cover 10.

[0086] Within the second region 500, the strip-shaped reinforcing portion 510 has a relatively simple structure, which can reduce the cost of stamping ribs. To further reduce stress concentration, the strip-shaped reinforcing portions 510 on both sides of the second reinforcing portion 300 are symmetrically arranged about the second reinforcing portion 300.

[0087] In addition, the top surface of the square reinforcement section has a large flat surface, which makes it easy to attach nameplates and other information such as usage precautions and parameters of the battery pack, thus improving the practicality of the battery pack.

[0088] In one possible implementation, the top cover 10 also includes a connecting portion 600.

[0089] The connecting portion 600 is disposed around the periphery of the main body 100 and extends toward the second surface 102 of the main body 100. The main body 100 is connected to the tray 20 through the connecting portion 600.

[0090] In the above embodiment, the connecting portion 600 is disposed around the periphery of the main body 100 and extends toward the second surface 102 of the main body 100, forming a circumferential connecting structure. This allows the connecting portion 600 to distribute the force from multiple directions when the upper cover 10 is connected to the tray 20, greatly enhancing the overall stability of the connection between the upper cover 10 and the tray 20, effectively preventing the upper cover 10 from loosening or shifting relative to the tray 20, and better maintaining the integrity of the battery pack structure.

[0091] The connecting part 600 can be bolted to the tray 20 or welded to the tray 20. This application does not limit the connection method between the connecting part 600 and the tray 20.

[0092] This application embodiment also provides a battery pack, including a tray 20, a cell module 40, electrical components 30, and the aforementioned top cover 10, the top cover 10 being connected to the tray 20.

[0093] In a specific implementation, the cell module 40 and electrical components 30 are disposed within the receiving cavity of the tray 20. The top cover 10 is placed on the tray 20. The specific structure of the top cover 10 has been described above and will not be repeated here. The battery pack provided in this application embodiment has all the beneficial technical effects of the top cover 10 described above.

[0094] In one possible implementation, refer to Figure 2 As shown, a buffer 700 is provided between the upper cover 10 and the battery cell module 40, and the upper cover 10 contacts the battery cell module 40 through the buffer 700.

[0095] Here, when the battery pack is subjected to an external impact, the top cover 10 contacts the cell module 40 via the buffer 700. The buffer 700 can be made of a soft and elastic material, such as rubber, sponge, or special polymer materials. These materials can effectively absorb and disperse the impact force, reducing the force transmitted to the cell module 40, thereby reducing the risk of damage to the cell module 40 due to impact.

[0096] In one possible implementation, this application also provides an electrical device, including the aforementioned top cover 10 or the aforementioned battery pack. The electrical device can be a vehicle; in this application, a vehicle can refer to a large vehicle, a small vehicle, a special-purpose vehicle, etc. For example, according to vehicle type, the vehicle in this application can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles. Of course, other electrical devices can also be used, and this application does not limit this.

[0097] The implementation principle of the top cover 10, battery pack and electrical equipment in this application embodiment is as follows: The top cover 10 provided in this application is placed on the tray 20. The top cover 10 and the tray 20 can jointly encapsulate the electrical components 30 and the battery cell module 40 inside the tray 20. The top cover 10 includes: a main body 100 and a first reinforcing part 200; the main body 100 is at least used to connect with the tray 20, the first surface 101 of the main body 100 is used to face the outside of the tray 20, and the second surface 102 of the main body 100 is used to face the inside of the tray 20; the first reinforcing part 200 is provided on the main body 100, and the first reinforcing part 200 protrudes from the first surface 101 of the main body 100 to form a limiting groove 103 that is recessed from the second surface 102 of the main body 100. The limiting groove 103 is at least used to accommodate the copper busbar 50 of the electrical components 30. By providing a first reinforcing part 200 on the main body 100, the first reinforcing part 200 protrudes from the first surface 101 of the main body 100, forming a limiting groove 103 recessed from the second surface 102 of the main body 100. The limiting groove 103 is used to accommodate at least the copper busbar 50 of the electrical component 30. The limiting groove 103 can accurately accommodate and fix the copper busbar 50, preventing the copper busbar 50 from shifting, twisting, or vibrating during battery pack operation. This avoids problems such as poor circuit contact and short circuits caused by changes in the position of the copper busbar 50, ensuring the reliability and stability of the electrical connection, thereby reducing the safety hazards of the battery pack. In addition, the first reinforcing part 200 enhances the overall rigidity of the main body 100, preventing the main body 100 from deforming due to external forces. This further ensures the stability of the cell module 40 and electrical component 30 inside the tray 20, improving the protection effect for the cell module 40 and electrical component 30.

[0098] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein.

[0099] The embodiments in this application are intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0100] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An upper cover characterized in that, A cover is placed on a tray, and the cover and the tray together can encapsulate the electrical components and battery cell modules inside the tray. The cover includes: A body, at least for connection with the tray, having a first surface facing outwards from the tray and a second surface facing inwards from the tray; A first reinforcing portion is disposed on the main body and protrudes from a first surface of the main body to form a limiting groove recessed from a second surface of the main body. The limiting groove is at least used to accommodate the copper busbar of the electrical component.

2. The upper cover of claim 1, wherein The extension direction of the first reinforcing part is parallel to the length direction of the main body, and the length of the limiting groove is the same as the length of the main body.

3. The upper cover of claim 1, wherein The first reinforcing part is provided with at least two, and the two limiting grooves are arranged at intervals along the width direction of the main body.

4. The upper cover of claim 1, wherein It also includes a second reinforcing part, which is disposed on the main body and protrudes from the first surface of the main body; The second reinforcing part extends along the width direction of the main body and is arranged intersecting with the first reinforcing part.

5. The upper cover of claim 4, wherein, There are multiple second reinforcing parts, and the multiple second reinforcing parts are arranged along the length direction of the main body; The second reinforcing part and the first reinforcing part together form multiple reinforcing areas on the main body.

6. The upper cover of claim 5, wherein, The plurality of reinforcing bar regions include a first region and a second region; The first region is located on one side of the first reinforcing part in the length direction of the main body, and the second region is located on the other side of the first reinforcing part in the length direction of the main body.

7. The upper cover of claim 6, wherein The first region is provided with at least one first square reinforcing part and at least one bent reinforcing part; And / or, the second region is provided with at least one strip-shaped reinforcing portion and at least one second square reinforcing portion.

8. The upper cover according to any one of claims 1-7, characterized in that It also includes the connecting part; The connecting portion is disposed around the periphery of the body and extends toward the second surface of the body. The body is used to connect with the tray via the connecting portion.

9. A battery pack, characterized by, It includes a tray, a battery module, electrical components, and a top cover as described in any one of claims 1-8.

10. An electric device, characterized by Includes the top cover as described in any one of claims 1-8, or the battery pack as described in claim 9.

Images