Battery pack and vehicle

Abstract

The utility model relates to the technical field of new energy batteries, in particular to a battery pack and a vehicle, a battery box body in the battery pack is high in structural strength, can bear large pressure in the vertical direction, can reliably support an automobile seat, ensures the setting strength of the automobile seat, and ensures the assembly quality and safe driving of the whole vehicle. And the upper cover of the battery box body is high in structural strength and not easy to deform, the air tightness of the battery box body is good, and the risk of thermal runaway of the battery is reduced. The battery pack comprises a battery box body, an upper cover and a supporting assembly, a plurality of stiffening beams are arranged in the battery box body, the interior of the battery box body is divided into a plurality of battery containing spaces by the stiffening beams, and the battery containing spaces are used for arranging battery packs; the upper cover covers the battery box body; the supporting assembly is arranged on the reinforcing beam and comprises a supporting piece and a reinforcing piece, the supporting piece is connected with the reinforcing beam through the reinforcing piece and abuts against the upper cover, at least the middle of the supporting piece is of a double-layer structure, and the double-layer structure forms a cavity.

Description

Technical Field

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

[0002] With the continuous development of new energy technologies, new energy batteries, as an environmentally friendly energy storage and release device, have been widely used in many technical fields.

[0003] Taking the new energy vehicle sector as an example, the battery pack is installed in the vehicle chassis, and the car seat is placed on top of the battery pack housing. Due to the significant weight of the car seat, a support structure such as a bracket is required on the upper surface of the housing to support it. However, since the battery pack housing's upper cover is only installed around the perimeter of the housing, the support in the middle of the upper cover is weak, resulting in insufficient strength of the upper cover. This limits the pressure the battery pack can withstand in the vertical direction, consequently leading to insufficient strength of the car seat and affecting the overall quality and safe driving of the vehicle. Moreover, the battery pack housing's upper cover has limited pressure-bearing capacity and is prone to deformation. Deformation of the upper cover reduces the airtightness of the housing, affecting the safety and stability of the battery. Furthermore, the deformed part of the upper cover may come into contact with the battery inside the housing, easily transferring the pressure on the upper cover to the battery. Both of these factors increase the risk of battery thermal runaway. Utility Model Content

[0004] In view of this, the present invention provides a battery pack and vehicle to solve the problem that the battery box of the existing battery pack does not provide sufficient support for the car seat, which affects the strength of the car seat and increases the risk of thermal runaway of the battery.

[0005] In a first aspect, this utility model provides a battery pack, comprising:

[0006] The battery housing has multiple reinforcing beams inside, which divide the interior of the battery housing into multiple battery storage spaces, which are used to house battery packs.

[0007] The top cover is installed on the battery box body;

[0008] A support assembly is disposed on the reinforcing beam. The support assembly includes a support member and a reinforcing member. The support member is connected to the reinforcing beam through the reinforcing member and abuts against the upper cover. The support member has at least a double-layer structure in the middle, and the double-layer structure forms a cavity.

[0009] Beneficial Effects: The battery pack of this utility model has a support assembly inside the battery box. The support assembly is located on a reinforcing beam and includes a support member and a reinforcing member. The support member is connected to the reinforcing beam through the reinforcing member and abuts against the top cover. The support member has at least a double-layer structure in the middle, forming a cavity. This support member has higher structural strength and better reliability. Utilizing the supporting force provided by the reinforcing beam, and through the double-layer design of the support member itself, the structural strength of the top cover and the overall structural strength of the battery box can be significantly enhanced, increasing the pressure that the battery box can withstand in the vertical direction. When the battery pack is used in a vehicle, the battery box can provide reliable support for the vehicle's seats, ensuring the seat's structural strength and thus guaranteeing the assembly quality and safe driving of the entire vehicle. Moreover, the high structural strength of the top cover of this battery box makes it less prone to deformation, ensuring the airtightness of the battery box and preventing the pressure on the top cover from being transmitted to the battery inside the battery box, thereby reducing the risk of thermal runaway.

[0010] Secondly, the present invention also includes a vehicle, comprising a seat and a battery pack as described above, the battery pack being connected to and supporting the seat.

[0011] Since the vehicle of this utility model includes the battery pack of this utility model and has the same beneficial effects as the battery pack, it will not be described again here. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is the overall structure of the battery pack of this utility model;

[0014] Figure 2 This is a top view of the battery pack of this utility model;

[0015] Figure 3 This is a schematic diagram of the battery pack of this utility model (top cover hidden);

[0016] Figure 4 This is a schematic diagram of the support component in the battery pack of this utility model;

[0017] Figure 5 This is a top view of the support member in the battery pack of this utility model;

[0018] Figure 6 for Figure 5A sectional view along the A-A' direction;

[0019] Figure 7 for Figure 5 A sectional view along the B-B' direction;

[0020] Figure 8 This is a three-dimensional schematic diagram of the reinforcing member in the battery pack of this utility model;

[0021] Figure 9 This is a front view schematic diagram of the reinforcing member in the battery pack of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Battery housing;

[0024] 2. Support component; 201. Cavity; 202. Enlarged section; 203. Connecting hole; 204. Upper structure arched section; 205. Lower structure arched section;

[0025] 3. Strengthen the beam;

[0026] 4. Top cover; 401. Top cover mounting hole;

[0027] 5. Reinforcing components; 501. Reinforcing ribs; 502. Cavity structure; 503. Connecting plate; 504. Top mounting hole; 505. Bottom mounting hole;

[0028] 6. Border;

[0029] 7. Base plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] The following is combined Figures 1 to 9 This describes embodiments of the battery pack and vehicle of this utility model.

[0032] According to an embodiment of the present invention, a battery pack is provided, including a battery housing 1, a top cover 4, and a support assembly. The battery housing 1 is provided with multiple reinforcing beams 3 inside, which divide the interior of the battery housing 1 into multiple battery accommodating spaces for accommodating battery packs. The top cover 4 covers the battery housing 1. The support assembly is disposed on the reinforcing beams 3 and includes a support member 2 and a reinforcing member 5. The support member 2 is connected to the reinforcing beams 3 through the reinforcing member 5, and the support member 2 abuts against the top cover 4. The support member 2 has at least a double-layer structure in the middle, and the double-layer structure forms a cavity 201.

[0033] In this battery pack, a support assembly is installed inside the battery housing 1. The support assembly is located on the reinforcing beam 3 and includes a support member 2 and a reinforcing member 5. The support member 2 is connected to the reinforcing beam 3 through the reinforcing member 5, and the support member 2 abuts against the top cover 4. The support member 2 has a double-layer structure at least in the middle, forming a cavity 201 at the double-layer structure. This support member 2 has higher structural strength and better reliability. By utilizing the supporting force provided by the reinforcing beam 3 to set up the support member 2, and through the double-layer structure design of the support member 2 itself, the structural strength of the battery housing top cover and the overall structural strength of the battery housing can be significantly enhanced, increasing the pressure that the battery housing can withstand in the vertical direction. When the battery pack is used in a vehicle, the battery housing can provide reliable support for the vehicle's seats, ensuring the seat's structural strength, thereby guaranteeing the assembly quality and safe driving of the entire vehicle. Moreover, the high structural strength of this battery housing top cover 4 makes it less prone to deformation, ensuring the airtightness of the battery housing 1 and preventing the pressure on the top cover 4 from being transmitted to the battery inside the battery housing 1, thus reducing the risk of thermal runaway of the battery.

[0034] The battery housing is one of the key structural components of a battery pack, primarily used to house and support the battery pack and electrical components. The structural strength of the battery housing directly affects the reliability and safety of the battery pack. Furthermore, when the battery pack is used in certain applications, such as automobiles, the battery housing 1 also serves to support the car seats, making its structural strength even more critical.

[0035] like Figures 1-2 As shown, in this embodiment, the battery box has a cuboid-like structure, and the specific structural shape of the battery box is adapted to the installation space of its application scenario. The battery box includes a frame 6 and a base plate 7. The frame 6 surrounds the edge of the base plate 7 and forms an internal accommodating space, in which the battery pack and electrical components are housed.

[0036] Within the internal space of the battery housing 1, multiple reinforcing beams 3 are installed. These beams primarily support the battery housing 1, enhancing its structural strength and ensuring the stability of the battery packs inside during transportation and use. The reinforcing beams 3 divide the interior of the battery housing 1 into multiple battery-accommodating spaces, which are used to house the battery packs. The reinforcing beams 3 are mounted on the base plate 7, with their upper surfaces higher than the base plate. In this embodiment, the reinforcing beams 3 are arranged along the length of the battery housing 1, and three beams are provided, spaced apart. The specific number of reinforcing beams 3 should be selected based on the size of the battery housing 1 and structural strength requirements; this embodiment does not impose any restrictions. For example, two, four, or five reinforcing beams can be used.

[0037] In this embodiment, the battery box 1 also includes an upper cover 4. The structure and shape of the upper cover 4 are consistent with the structure and shape of the frame 6. The upper cover 4 is adapted to cover the frame 6 to seal the internal space of the battery box 1 and protect the battery pack, electrical components and other components installed inside the battery box 1.

[0038] Inside the battery housing 1, there is also a support assembly. The support assembly is located on the reinforcing beam 3 and is mainly used to support the top cover 4 and the battery housing 1.

[0039] The support assembly includes support members 2 and reinforcing members 5. Support members 2 are connected to reinforcing beams 3 via reinforcing members 5. Each support member 2 is connected to and supported by at least two reinforcing beams 3. The support members 2 are mainly used to further enhance the overall structural strength of the battery box 1. They not only ensure the stability of the battery pack, electrical components, etc. inside the battery box 1 during transportation or use, but also strongly support the top cover 4 of the battery box 1 and the objects to be supported (e.g., car seats) placed on top of the top cover 4, thereby improving the structural reliability of the battery box 1. Moreover, each support member 2 is connected to and supported by at least two reinforcing beams 3. Each support member 2 is supported by at least two reinforcing beams 3, so that the support member 2 and at least two reinforcing beams 3 form a structural whole, which greatly improves the connection stiffness and significantly enhances the structural strength of the battery box 1.

[0040] like Figure 2 As shown, in this embodiment, four support members 2 are provided. Each support member 2 is connected and supported by three reinforcing beams 3 through reinforcing members 5. The support members 2 are arranged along the width direction of the battery box 1, that is, the length direction of the support member 2 is perpendicular to the length direction (extension direction) of the reinforcing beams 3. This arrangement of the support members 2 forms a horizontally and vertically connected support structure inside the battery box 1, effectively improving the structural strength of the battery box 1.

[0041] In addition, such as Figures 4-5As shown, the support member 2 is a rod-shaped member of a certain length, and at least the middle part of the support member 2 has a double-layer structure, making the structure of the support member 2 at least in the middle position stronger, with better support effect, and lighter weight. Moreover, the cavity 201 formed by the double-layer structure increases the moment of inertia of the support member 2, improving the torsional and bending resistance of the overall structure of the support member 2. In addition, the cavity 201 can effectively absorb external impact energy and reduce stress concentration and other problems. By setting this support member 2, the overall structural strength of the battery box 1 can be greatly enhanced, thereby reliably supporting the object to be supported on the top of the battery box 1, thus ensuring the strength of the object to be supported.

[0042] In this embodiment, the support member 2 is a long rod-shaped structure, and the reinforcing beam 3 is also a long rod-shaped structure. To facilitate the connection and support between the support member 2 and the reinforcing beam 3, a reinforcing member 5 is provided between the support member 2 and the reinforcing beam 3. The support member 2 is connected to the reinforcing beam 3 through the reinforcing member 5. Specifically, the top of the reinforcing member 5 is connected to the lower surface of the support member 2, and the bottom of the reinforcing member 5 is connected to the upper surface of the reinforcing beam 3, so as to facilitate the installation of the support member 2, the reinforcing member 5, and the reinforcing beam 3.

[0043] In this embodiment, the reinforcing beam 3 is disposed on the base plate 7. In order for the support member 2 to support and abut against the top cover 4, the reinforcing member 5 should have a certain height so that the reinforcing member 5 can connect to and support the support member 2, thereby achieving the abutment support of the support member 2 against the top cover 4. The height of the reinforcing member 5 is set according to the distance between the base plate 7 and the top cover 4, as well as the size of the internal space of the battery box 1.

[0044] like Figure 2 As shown, each support member 2 is provided with a reinforcing member 5 at the connection between it and each reinforcing beam 3. The number of reinforcing beams 3 connected to the support member 2 is the same as the number of reinforcing members 5. In this embodiment, each support member 2 is connected to three reinforcing beams 3, so three reinforcing members 5 are provided below each support member 2.

[0045] In this embodiment, the middle part of the support member 2 has a double-layer structure, and the double-layer structure is continuously provided for at least one length in the length direction of the support member 2.

[0046] In other embodiments, depending on different design needs, the support member 2, except for the central part, can also have a double-layer structure, as long as it does not affect the structural strength of the support member 2. Furthermore, the number of support members 2 can be selected according to the structural strength requirements of the battery box 1, the size of the installation space, etc., for example, one, two, three, or five support members 2 can be provided.

[0047] Support member 2 connects to and supports the top cover 4 so that support member 2 abuts against the top cover 4. Support member 2 is located inside the battery box 1. After the top cover 4 is installed in conjunction with the frame 6, the top cover 4 is located above support member 2. The top of support member 2 is connected to the lower surface of the top cover 4 (the side facing the inside of the battery box 1) so as to realize the abutment support of support member 2 against the top cover 4 and enhance the structural strength of the top cover 4.

[0048] When the battery housing 1 is applied to a car chassis, a car seat is installed on top of the cover 4. Because the support member 2 reliably supports the cover 4, the structural strength of the middle section of the cover 4 is significantly enhanced, allowing it to withstand greater pressure in the vertical direction. This strengthens the seat installation and ensures the overall quality and safe driving of the vehicle. Furthermore, the high structural strength and resistance to deformation of the cover 4 ensure the airtightness of the battery housing 1, preventing the pressure on the cover 4 from being transferred to the battery inside the housing 1, thus reducing the risk of thermal runaway.

[0049] In addition, inside the battery box 1, the top of the battery pack is lower than the top of the support member 2, and the top of the battery pack is higher than the top of the reinforcing beam 3, so that the connection and cooperation of the support member 2, the reinforcing member 5 and the reinforcing beam 3 will not affect the installation of the battery pack, thus improving the reliability and adaptability of the structure.

[0050] Furthermore, the double-layer structure includes an upper structure and a lower structure, with the upper and lower structures arched together.

[0051] Viewed in cross-section perpendicular to the length of support member 2, the double-layer structure on support member 2 includes an upper structure and a lower structure. In the vertical direction, the upper structure is positioned above the lower structure, and the upper and lower structures are spaced apart by a certain distance to form a cavity 201. Furthermore, both the upper and lower structures are arched to make the cavity 201 larger, thereby increasing the structural strength of support member 2 itself.

[0052] The arched design of both the upper and lower structures means that the double-layer structure of the support member 2 was originally a flat double-layer structure. A part of the upper structure protrudes upward or downward, forming a protruding arch compared to the original flat structure. Similarly, a part of the lower structure protrudes upward or downward, forming a protruding arch compared to the original flat structure.

[0053] Furthermore, the arching direction of the upper structure is opposite to that of the lower structure.

[0054] like Figures 5-7As shown, in this embodiment, the upper structure has an upper structure arched portion 204, the arching direction of the upper structure arched portion 204 is upward, and the lower structure has a lower structure arched portion 205, the arching direction of the lower structure arched portion 205 is downward, the arching directions of the upper structure and the lower structure are opposite. The region between the upper structure arched portion 204 and the lower structure arched portion 205 forms a cavity 201.

[0055] By arranging the upper structural arch 204 and the lower structural arch 205 in opposite directions, the structural layout of the support member 2 is optimized. This increases the distance between the upper and lower structural arches 204 and 205, enlarges the size of the cavity 201, improves the cavity 201's ability to absorb external impact energy and reduce stress concentration, enhances the structural strength of the support member 2, and consequently increases the overall structural strength of the battery box 1 and the top cover 4. Furthermore, this type of support member 2 is easier to process and shape, which helps control the overall manufacturing cost of the battery pack.

[0056] Furthermore, on both sides of the middle part of the support member 2, the double-layer structure is merged into one.

[0057] like Figure 5 As shown, the double-layer structure is arranged along the length of the support member 2, and in the width direction of the support member 2 (viewed from a cross-section perpendicular to the length direction of the support member 2), the double-layer structure is located in the middle of the support member 2. The two sides of the middle of the support member 2 (viewed from a cross-section perpendicular to the length direction of the support member 2) Figures 6-7 Taking a visual perspective, the double-layered structure on both sides of support member 2 gradually approaches and eventually merges into one. In other words, in the width direction of support member 2, the two sides are not double-layered but rather a single-layered integrated structure. With this structure, the two edges of support member 2 have higher structural strength and greater impact resistance in the width direction, further enhancing the structural strength of support member 2.

[0058] Optionally, in the width direction of the support member 2, the two ends of the upper structure arched portion 204 are smoothly connected to the two side portions of the support member 2 to avoid stress concentration and ensure the structural strength of the support member 2. Similarly, the two ends of the lower structure arched portion 205 are smoothly connected to the two side portions of the support member 2 to further avoid stress concentration and ensure the structural strength of the support member 2.

[0059] Furthermore, the cavity 201 includes at least one enlarged portion 202, the width of which is perpendicular to the length direction of the support member 2 is greater than the width of other portions of the cavity 201 perpendicular to the length direction of the support member 2.

[0060] The cavity 201 inside the support member 2 extends along the length of the support member 2, forming a hollow internal structure of the support member 2. For example... Figure 4As shown, in the length direction of the support member 2, the cavity 201 includes at least one enlarged portion 202. The number of enlarged portions 202 is determined according to the size of the support member 2 and the support requirements of the battery box 1.

[0061] Optionally, when multiple enlarged portions 202 are provided in the length direction of the support member 2, the multiple enlarged portions 202 are spaced apart.

[0062] In this embodiment, each support member 2 has a cavity 201 including three enlarged portions 202, which are spaced apart, such as... Figures 5-7 As shown, the width L1 of the enlarged portion 202 perpendicular to the length direction of the support member 2 is greater than the width L2 of other parts of the cavity 201 perpendicular to the length direction of the support member 2. By providing the enlarged portion 202, the mass of the support member 2 can be reduced, and the compressive stability of the support member 2 can be improved, so that the support member 2 provides a stable and uniform supporting force to the upper cover 4. Furthermore, the greater width L1 of the enlarged portion 202 than the width L2 of other parts of the cavity 201 allows the enlarged portion 202 to provide better cushioning protection, making the force on the support member 2 more balanced and extending the service life of the support member.

[0063] like Figure 5 As shown, from the top view of the support member 2, the enlarged part 202 has two oppositely arranged arc-shaped structures, which makes the enlarged part 202 form a near-circular area. The connection between the enlarged part 202 and other parts of the support member 2 is smooth, so that the structure of the support member 2 is smooth. On the one hand, it is convenient to manufacture and form the support member 2, and on the other hand, it reduces the stress concentration problem of the support member 2 and enhances the structural strength of the support member 2.

[0064] Furthermore, the top of the reinforcing member 5 is connected to the support member 2, and the lower surface of the support member 202 is provided with an enlarged portion. The bottom of the reinforcing member 5 is connected to the reinforcing beam 3.

[0065] The top of the reinforcing member 5 is connected to the support member 2 at the lower surface of the enlarged portion 202. This is because the support member 2 has a large internal space at the location of the enlarged portion 202, which is suitable for setting up a connection structure to facilitate the installation and connection of the reinforcing member 5 and the support member 2.

[0066] Specifically, such as Figure 8 As shown, a top mounting hole 504 is provided on the top of the reinforcing member 5. Correspondingly, a matching support mounting hole is provided on the lower surface of the enlarged portion 202 of the support member 2. The top mounting hole 504 and the support mounting hole can be connected by fasteners such as bolts, thereby realizing the installation of the reinforcing member 5 and the support member 2.

[0067] A connecting plate 503 is provided at the bottom of the reinforcing member 5. The connecting plate 503 extends horizontally outward from both sides of the bottom of the reinforcing member 5. A bottom mounting hole 505 is provided on the connecting plate 503. Correspondingly, a crossbeam mounting hole is provided on the upper surface of the reinforcing beam 3. The bottom mounting hole 505 and the crossbeam mounting hole can be connected by fasteners such as bolts, thereby realizing the installation of the reinforcing member 5 and the reinforcing beam 3.

[0068] Optionally, in order to enhance the stability of the reinforcing member 5, the bottom area of ​​the reinforcing member 5 is larger than the top area, so that the reinforcing member 5 forms a trapezoidal structure. This type of reinforcing member 5 has a stable bottom, is easy to install, simplifies the installation operation, and has better reliability.

[0069] Furthermore, the interior of the reinforcing member 5 has multiple reinforcing ribs 501, which form a triangular and / or trapezoidal cavity structure 502.

[0070] like Figures 8-9 As shown, the interior of the reinforcing member 5 is not a solid structure, but has multiple reinforcing ribs 501. This design can reduce the weight of the reinforcing member 5, thereby reducing the overall weight of the battery box 1, and can also strengthen the structural strength of the reinforcing member 5, so that the reinforcing member 5 can reliably connect to and support the support member 2 above.

[0071] The number and position of the reinforcing ribs 501 are not specifically limited. Multiple reinforcing ribs 501 are staggered and connected within the reinforcing member 5, forming a triangular and / or trapezoidal cavity structure 502 inside the reinforcing member 5. In this embodiment, the cavity structure 502 is a triangular cavity. The number and position of the cavity structure 502 are also not specifically limited, as long as they can reduce the weight of the reinforcing member 5 and improve its structural strength.

[0072] In other embodiments, the cavity structure 502 may also be a trapezoidal cavity or a cavity of other shapes, such as a rectangular cavity. Of course, some of the cavity structure 502 may be triangular cavities, while the rest may be trapezoidal cavities.

[0073] Furthermore, the battery housing 1 also includes a connecting mechanism, through which the support member 2 is connected to and supports the top cover 4.

[0074] In this embodiment, the support member 2 is connected to the upper cover 4 through a connecting mechanism, thereby achieving contact and support of the upper cover 4, so as to improve the reliability of the structure and facilitate the installation of the structure.

[0075] Specifically, the connecting mechanism includes a connecting hole 203 and a fastener. The connecting hole 203 is disposed on the upper surface of the enlarged portion 202, and the fastener passes through the upper cover 4 and engages with the connecting hole 203.

[0076] The connecting mechanism includes a connecting hole 203 and a fastener. The connecting hole 203 is provided on the upper surface of the support member 2. Correspondingly, the upper cover 4 is provided with an upper cover mounting hole 401. The fastener (such as a bolt) is adapted to pass through the upper cover mounting hole 401 and then tighten to the connecting hole 203, thereby realizing the connection of the support member 2 and supporting the upper cover 4.

[0077] Furthermore, a seal is provided at the location where the fastener passes through the top cover 4.

[0078] Because the battery housing 1 needs to be sealed to ensure the safety of the battery pack and electrical components, the internal space of the battery housing 1 must remain sealed after the top cover 4 is assembled to the frame 6. Therefore, in order to achieve the connection between the support member 2 and the object to be supported, a sealing element is provided at the location where the fastener passes through the top cover 4. Specifically, a sealing element is provided at the top cover mounting hole 401, which does not affect the connection between the support member 2 and the object to be supported, nor does it affect the internal sealing of the battery housing 1. For example, a sealing element can be provided on the inner wall of the top cover mounting hole 401.

[0079] Alternatively, the seal may be a sealing ring or a sealing gasket.

[0080] This embodiment also provides a vehicle including a seat and a battery pack as described above, the battery pack being connected to and supporting the seat.

[0081] This vehicle is a new energy vehicle, which improves the vehicle's operating power through a battery pack. Of course, this vehicle also has other devices and structures that are present in existing vehicles, which will not be elaborated here.

[0082] In this type of vehicle, the battery pack is located in the chassis, and the seat is mounted on the battery housing 1 of the battery pack. Because a support member 2 is installed inside the battery housing 1, it enhances the structural strength of the top cover 4 of the battery housing 1 and the overall structure of the battery housing 1, increasing the pressure the battery housing 1 can withstand in the vertical direction. This allows the battery housing 1 to reliably support the seat, ensuring the seat's structural strength and thus guaranteeing the overall assembly quality and safe driving of the vehicle. Furthermore, because the top cover 4 of the battery housing has high structural strength and is not easily deformed, the seat placement does not affect the airtightness of the battery housing 1 and does not increase the risk of thermal runaway of the battery.

[0083] Moreover, in this embodiment, the internal support member 2 of the battery box 1 connects to and supports the upper cover 4, which enhances the structural strength of the upper cover 4 and the battery box 1 as a whole. When the battery pack is applied in the automotive field, a seat is set on top of the upper cover 4, and the upper cover 4 needs to support the seat.

[0084] To ensure the support strength of the battery box 1 for the seat and the overall structural strength of the seat, the support member 2 is connected to and supports the seat via a connecting mechanism. This allows the support member 2 to directly support the seat, and the weight of the seat is supported by the reinforcing beam 3, the support member 2, and the upper cover 4. Specifically, to facilitate the support connection, the seat is provided with corresponding mounting holes, which cooperate with the connecting mechanism of the battery box 1. Specifically, the fasteners of the connecting mechanism can pass through the mounting holes, the upper cover 4, and then cooperate with the connecting hole 203, achieving a direct connection between the support member 2 and the seat. This allows the support member 2 to directly provide support to the seat. The support member 2 is supported by the reinforcing beam 3, which has a strong supporting force and is connected to the support member 2 both horizontally and vertically, providing sufficient support for the seat and ensuring the structural strength of the car seat.

[0085] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery pack, characterized by, The application relates to a battery box (1) internally provided with a plurality of reinforcing beams (3) for separating the battery box (1) into a plurality of battery accommodating spaces for arranging battery packs. An upper cover (4) is arranged on the battery box (1). A support assembly is arranged on the reinforcing beams (3) and comprises a support piece (2) and a reinforcing piece (5), the support piece (2) is connected with the reinforcing beams (3) through the reinforcing piece (5), and the support piece (2) abuts against the upper cover (4), the middle part of the support piece (2) is a double-layer structure, and the double-layer structure forms a cavity (201). The double-layer structure comprises an upper layer structure and a lower layer structure, and the upper layer structure and the lower layer structure are arranged in an arch shape.

2. The battery pack of claim 1, wherein, The arch directions of the upper layer structure and the lower layer structure are opposite.

3. The battery pack of claim 2, wherein, The double-layer structure is integrated on both sides of the middle part of the support piece (2).

4. The battery pack of claim 2, wherein, The cavity (201) comprises at least one enlarged part (202), and the width of the enlarged part (202) perpendicular to the length direction of the support piece (2) is greater than the width of other parts of the cavity (201) perpendicular to the length direction of the support piece (2).

5. The battery pack of claim 1, wherein, In the length direction of the support piece (2), a plurality of the enlarged parts (202) are arranged at intervals.

6. The battery pack of claim 5, wherein, The top of the reinforcing piece (5) is connected with the lower surface of the support piece (2) at the position where the enlarged part (202) is arranged, and the bottom of the reinforcing piece (5) is connected with the reinforcing beam (3).

7. The battery pack of claim 1, wherein, The battery box (1) further comprises a connecting mechanism, and the support piece (2) abuts against the upper cover (4) through the connecting mechanism.

8. The battery pack of claim 7, wherein, The connecting mechanism comprises a connecting hole (203) and a fastener, the connecting hole (203) is arranged on the upper surface of the enlarged part (202), and the fastener penetrates through the upper cover (4) and cooperates with the connecting hole (203).

9. The battery pack of claim 8, wherein, The reinforcing piece (5) is internally provided with a plurality of reinforcing ribs (501), and the reinforcing ribs (501) form a triangular and / or trapezoidal cavity structure (502).

10. The battery pack of claim 1, wherein, The support piece (2) is perpendicular to the extension direction of the reinforcing beam (3) connected with the support piece (2).

11. The battery pack of claim 1, wherein, The top of the battery pack is lower than the top of the support piece (2) and higher than the top of the reinforcing beam (3).

12. The battery pack of any one of claims 1-11, wherein, The application further relates to a seat connected and supported by the battery pack.

13. A vehicle characterized by comprising: ​

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