Battery box assembly and battery pack

Abstract

The utility model discloses a battery box body subassembly and battery package belong to battery technical field. The utility model discloses a battery box body subassembly adds the reinforcing part through one end of frame connection in mounting panel, and reinforcing part is located the side of mounting panel away from battery module, and makes along vertical direction, and the projection of partial reinforcing part and the projection of main part overlap setting, and then can pass through reinforcing part and strengthen the area of mounting panel and main part close to the one end of frame, and the weak area of mounting panel is strengthened, can avoid the stress concentration of battery module acting on mounting panel and lead to mounting panel to appear the problem such as bending even breaking, thereby improve the structural strength of mounting panel, reach the purpose of improving the reliability of battery box body subassembly. The utility model discloses a battery package, can improve the reliability of battery box body subassembly and the safety of battery package through the application of above-mentioned battery box body subassembly.

Description

Technical Field

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

[0002] Battery packs typically use a housing assembly to enclose the battery modules. The housing assembly not only protects the battery modules but also improves the structural strength of the battery pack, thereby enhancing the ease and reliability of battery pack installation.

[0003] In related technologies, the housing assembly typically includes a frame and a mounting plate fixed to the bottom of the frame to support the battery module; the battery module includes a main body and electrode terminals located on one side of the main body. However, if the battery module is large, when the battery module encounters vibration, the stress acting on the mounting plate may become excessively concentrated. For example, the stress acting on the mounting plate at the end of the main body near the frame may be too high, which could easily damage the mounting plate and even cause safety hazards to the battery pack. Utility Model Content

[0004] One objective of this invention is to provide a battery housing assembly that improves the structural strength of the mounting plate, thereby enhancing the reliability of the battery housing assembly.

[0005] Another objective of this invention is to provide a battery pack that improves the reliability of the battery housing components, thereby enhancing the safety of the battery pack.

[0006] To achieve the above objectives, the following technical solution is provided:

[0007] Battery housing assembly, including:

[0008] A mounting plate and a frame are provided, wherein one end of the mounting plate along a first direction is fixedly connected to the frame, and an installation space for accommodating a battery module is formed between the mounting plate and the frame; the battery module includes a main body and electrode terminals disposed on one side of the main body.

[0009] A reinforcing member is fixed to one end of the mounting plate where it connects to the frame, and the reinforcing member is located on the side of the mounting plate away from the battery module; in the vertical direction, the projection of part of the reinforcing member overlaps with the projection of the main body.

[0010] To achieve the above objectives, a battery pack, including the aforementioned battery housing assembly, is also provided.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The battery housing assembly described above forms an installation space between the mounting plate and the frame to accommodate the battery module. By adding a reinforcing member at the end where the mounting plate connects to the frame, and placing the reinforcing member on the side of the mounting plate away from the battery module, and ensuring that the projection of part of the reinforcing member overlaps with the projection of the main body in the vertical direction, the area corresponding to the end of the mounting plate and the main body near the frame can be strengthened. This is equivalent to strengthening the weak area of ​​the mounting plate, which can prevent stress concentration caused by the battery module acting on the mounting plate, thus avoiding problems such as bending or even breakage of the mounting plate. This improves the structural strength of the mounting plate and enhances the reliability of the battery housing assembly.

[0013] The battery pack of the above technical solution, by applying the above battery housing assembly, can improve the reliability of the battery housing assembly, thereby improving the safety of the battery pack. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the battery pack structure in an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the first partial structure of the battery pack in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the second partial structure of the battery pack in an embodiment of the present invention;

[0017] Figure 4 This is a cross-sectional view of the battery pack in an embodiment of the present invention;

[0018] Figure 5 This is a partial cross-sectional view of the battery pack in an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the reinforcing member in an embodiment of this utility model.

[0020] Figure label:

[0021] 100. Battery module; 101. Main body; 102. Electrode terminal; 1. Mounting plate; 1a. Third end; 1b. Fourth end; 14. First channel; 15. First plate; 16. Second plate; 161. First protrusion; 162. First groove; 2. Frame; 3. Reinforcing member; 3a. First end; 3b. Second end; 31. Reinforcing member; 311. Clearance groove; 3111. Groove bottom wall; 3112. Groove side wall; 32. Connecting part; 4. Base plate; 41. Second groove; 42. Third groove; 5. Support member. Detailed Implementation

[0022] 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] like Figures 1 to 6 As shown, this embodiment provides a battery housing assembly and a battery pack. The battery pack includes a battery module 100 and a battery housing assembly capable of enclosing the battery module 100.

[0030] The battery housing assembly includes a mounting plate 1, a frame 2, and a reinforcing member 3. One end of the mounting plate 1 along a first direction is fixedly connected to the frame 2, and an installation space for accommodating the battery module 100 is formed between the mounting plate 1 and the frame 2. The battery module 100 includes a main body 101 and an electrode terminal 102 disposed on one side of the main body 101. The reinforcing member 3 is fixedly disposed at the end of the mounting plate 1 connected to the frame 2, and the reinforcing member 3 is located on the side of the mounting plate 1 away from the battery module 100. Along the vertical direction, the projection of part of the reinforcing member 3 overlaps with the projection of the main body 101.

[0031] In this embodiment of the battery housing assembly, a mounting space for accommodating the battery module 100 is formed between the mounting plate 1 and the frame 2. By adding a reinforcing member 3 at the end where the mounting plate 1 connects to the frame 2, and with the reinforcing member 3 located on the side of the mounting plate 1 away from the battery module 100, and with the projection of part of the reinforcing member 1 overlapping the projection of the main body 101 in the vertical direction, the area corresponding to the end of the mounting plate 1 and the main body 101 near the frame can be strengthened by the reinforcing member 3. This is equivalent to strengthening the weak area of ​​the mounting plate 1, so that the reinforcing member 3 can share some of the stress on the mounting plate 1, avoiding stress concentration caused by the battery module 100 acting on the mounting plate 1, which could lead to bending or even breakage of the mounting plate 1. This improves the structural strength of the mounting plate 1 and enhances the reliability of the battery housing assembly.

[0032] Specifically, the battery module 100 is disposed within the installation space. Further, the battery module 100 includes multiple battery cells stacked along a second direction; the first direction and the second direction are perpendicular to each other with respect to the vertical direction. Further, the length of each battery cell along the first direction is greater than its width along the second direction; that is, the battery cell is a long strip-shaped battery, and the length direction of the battery is parallel to the first direction.

[0033] It should be noted that when the battery pack encounters vibration, the stress exerted on the mounting plate 1 by the two ends of the long strip battery along its length is relatively large. In this embodiment, the area of ​​the mounting plate 1 subjected to large stress is reinforced by the reinforcing member 3 to avoid problems such as bending or even breakage of the mounting plate 1 due to stress concentration.

[0034] In some embodiments, such as Figures 1 to 3 As shown, there are two frame 2s, which are respectively located at both ends of the mounting plate 1 along the first direction; both ends of the mounting plate 1 along the first direction are provided with reinforcing members 3, which can strengthen the weak areas of the mounting plate 1 along the first direction, thereby further improving the structural strength of the mounting plate 1.

[0035] In some embodiments, such as Figure 4 As shown, along the first direction, the length of the battery module 100 is 'a', and the length of the reinforcing member 3 is 'b'; the value of b / a ranges from 0.032 to 0.07. It should be noted that if b / a is too small, it indicates that the length of the reinforcing member 3 along the first direction is small, resulting in a poor reinforcement effect on the structural strength of the mounting plate 1, which is unlikely to meet user requirements. If b / a is too large, it indicates that the length of the reinforcing member 3 along the first direction is large, resulting in an excessive reinforcement effect on the structural strength of the mounting plate 1, leading to increased costs. By limiting the value of b / a to the range of 0.032-0.07, the cost can be reduced while ensuring that the reinforcement effect of the reinforcing member 3 on the structural strength of the mounting plate 1 meets the requirements.

[0036] For example, b / a can be any value between 0.032 and 0.07, such as 0.032, 0.04, 0.045, 0.05, 0.055, 0.06, 0.065 or 0.07.

[0037] For example, the value of 'a' ranges from 1000mm to 1400mm. That is, 'a' can be any value between 1000mm and 1400mm, such as 1000mm, 1100mm, 1200mm, 1300mm, or 1400mm.

[0038] For example, the value of b ranges from 45mm to 70mm. That is, b can be any value between 45mm and 70mm, such as 45mm, 50mm, 55mm, 60mm, 65mm, or 70mm.

[0039] In some embodiments, such as Figure 3 As shown, along the second direction, the length of the reinforcing member 3 is m, and the length of the mounting plate 1 is n. The value of m / n ranges from 0.464 to 0.855. It should be noted that if m / n is too small, it indicates that the length of the reinforcing member 3 along the second direction is relatively small compared to the mounting plate 1, resulting in a poor reinforcement effect on the structural strength of the mounting plate 1 and failing to meet user requirements. If m / n is too large, it indicates that the length of the reinforcing member 3 along the second direction is large, leading to excessive reinforcement of the structural strength of the mounting plate 1 and increased costs. By limiting the value of m / n to the range of 0.464-0.855, the cost can be reduced while ensuring that the reinforcement effect of the reinforcing member 3 on the structural strength of the mounting plate 1 meets the requirements.

[0040] For example, m / n can be any value between 0.464 and 0.855, such as 0.464, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, or 0.855.

[0041] For example, the value of m ranges from 650mm to 855mm. That is, m can be any value between 650mm and 855mm, such as 650mm, 700mm, 750mm, 800mm, or 855mm.

[0042] For example, the value of n ranges from 1000mm to 1400mm. That is, n can be any value between 1000mm and 1400mm, such as 1000mm, 1100mm, 1200mm, 1300mm or 1400mm.

[0043] For ease of description, the two opposite ends of the reinforcing member 3 along the second direction are respectively referred to as the first end 3a and the second end 3b; the two opposite ends of the mounting plate 1 along the second direction are respectively referred to as the third end 1a and the fourth end 1b, with the third end 1a and the first end 3a located on the same side of the reinforcing member 3.

[0044] In some embodiments, the distance between the first end 3a and the third end 1a along the second direction ranges from 50mm to 300mm. It should be noted that if the distance between the first end 3a and the third end 1a is too large along the second direction, the reinforcement effect of the reinforcing member 3 on the third end 1a will be poor, resulting in the risk of bending in the weak areas of the mounting plate 1. If the distance between the first end 3a and the third end 1a is too small along the second direction, the reinforcement effect of the reinforcing member 3 on the third end 1a will be excessive, leading to increased costs. By limiting the distance between the first end 3a and the third end 1a along the second direction to a range of 50mm to 300mm, the cost can be reduced while ensuring that the reinforcement effect of the reinforcing member 3 on the structural strength of the mounting plate 1 meets the requirements.

[0045] For example, along the second direction, the distance between the first end 3a and the third end 1a can be any value between 50mm and 300mm. For instance, along the second direction, the distance between the first end 3a and the third end 1a can be 50mm, 100mm, 150mm, 200mm, 250mm or 300mm.

[0046] In some embodiments, the distance between the second end 3b and the fourth end 1b along the second direction ranges from 100mm to 400mm. It should be noted that if the distance between the second end 3b and the fourth end 1b along the second direction is too large, the reinforcement effect of the reinforcing member 3 on the fourth end 1b will be poor, resulting in the risk of bending in the weak areas of the mounting plate 1. If the distance between the second end 3b and the fourth end 1b along the second direction is too small, the reinforcement effect of the reinforcing member 3 on the fourth end 1b will be excessive, leading to increased costs. By limiting the distance between the second end 3b and the fourth end 1b along the second direction to a range of 100mm to 400mm, the cost can be reduced while ensuring that the reinforcement effect of the reinforcing member 3 on the structural strength of the mounting plate 1 meets the requirements.

[0047] For example, along the second direction, the distance between the second end 3b and the fourth end 1b can be any value between 100mm and 400mm. For instance, along the second direction, the distance between the second end 3b and the fourth end 1b can be 100mm, 150mm, 200mm, 250mm, 300mm, 350mm or 400mm.

[0048] It should be noted that when the sides of the mounting plate 1 along the second direction are non-straight lines such as broken lines or curves, the length n of the mounting plate 1 along the second direction is: the minimum length of the area of ​​the mounting plate 1 with the reinforcing member 3 along the second direction; the distance between the first end 3a and the third end 1a along the second direction is: the minimum distance between the third end 1a and the first end 3a along the second direction of the area of ​​the mounting plate 1 with the reinforcing member 3; the distance between the second end 3b and the fourth end 1b along the second direction is: the minimum distance between the fourth end 1b and the second end 3b along the second direction of the area of ​​the mounting plate 1 with the reinforcing member 3.

[0049] In some embodiments, such as Figure 5 and Figure 6 As shown, the reinforcing member 3 includes a reinforcing part 31 and two connecting parts 32, which are respectively connected to both sides of the reinforcing part 31 along the first direction; both connecting parts 32 are fixedly connected to the mounting plate 1; the reinforcing part 31 is spaced apart from the mounting plate 1. In other words, the reinforcing part 31 does not contact the mounting plate 1, thus not only avoiding frictional damage caused by contact between the reinforcing part 31 and the mounting plate 1, but also transferring stress between the two connecting parts 32 through the reinforcing part 31, thereby significantly reducing the stress on the weak areas of the mounting plate 1, and thus better preventing problems such as bending of the mounting plate 1.

[0050] For example, both connecting parts 32 are welded and fixed to the mounting plate 1.

[0051] In some embodiments, the reinforcing part 31 and the connecting part 32 are connected by a first rounded corner. Compared with the form in which the reinforcing part 31 and the connecting part 32 are connected by a right angle, the stress of the reinforcing member 3 can be reduced, which is beneficial to reduce the stress on the mounting plate 1 and thus improve the effect of avoiding problems such as bending of the mounting plate 1.

[0052] In some embodiments, such as Figures 1 to 4 As shown, the mounting plate 1 is a heat exchange plate, which can support the battery module 100 while also managing the thermal performance of the battery module 100, thereby improving the performance and safety of the battery module 100 and increasing the integration of the battery housing assembly.

[0053] In some embodiments, the heat exchange plate is provided with heat exchange channels. Further, the heat exchange channels include a plurality of first channels 14 extending along a second direction, that is, the heat exchange medium in the first channels 14 flows along the second direction, and the plurality of first channels 14 are spaced apart along the first direction, thereby improving the temperature uniformity of the plurality of battery cells stacked along the second direction, which is beneficial to improving the performance of the battery pack.

[0054] In some embodiments, such as Figure 5As shown, the mounting plate 1 is provided with a first protrusion 161; the reinforcing member 3 is provided with a relief groove 311 corresponding to the first protrusion 161; in the vertical direction, a first gap is provided between the first protrusion 161 and the bottom wall 3111 of the relief groove 311, so that when the mounting plate 1 vibrates in the vertical direction, friction damage caused by contact between the first protrusion 161 and the bottom wall 3111 of the relief groove 311 can be avoided.

[0055] Specifically, the clearance groove 311 is provided in the reinforcing part 31 of the reinforcing member 3.

[0056] In some embodiments, such as Figure 5 and Figure 6 As shown, the bottom wall 3111 and the side wall 3112 of the clearance groove 311 are connected by a second rounded corner. Compared with the right-angle connection between the bottom wall 3111 and the side wall 3112 of the clearance groove 311, the stress of the reinforcing member 3 can be reduced, which is beneficial to reduce the stress on the mounting plate 1 and thus improve the effect of avoiding bending and other problems of the mounting plate 1.

[0057] In some embodiments, a second gap is provided between the first protrusion 161 and the groove sidewall 3112 of the clearance groove 311 along the first direction, so that when the mounting plate 1 vibrates along the first direction, friction damage caused by contact between the first protrusion 161 and the groove sidewall 3112 of the clearance groove 311 can be avoided.

[0058] Exemplarily, the heat exchange plate includes a first plate 15 and a second plate 16 fixedly connected, forming a heat exchange channel between the first plate 15 and the second plate 16. Exemplarily, the second plate 16 is fixedly disposed at the bottom of the first plate 15. For ease of description, the side of the second plate 16 facing the first plate 15 is referred to as the first surface, and the side of the second plate 16 away from the first plate 15 is referred to as the second surface. The second plate 16 protrudes from the first surface to the second surface, forming a first protrusion 161 on the second surface, and a first groove 162 corresponding to the first protrusion 161 is formed on the first surface. The first surface is fixedly connected to the first plate 15, thereby forming a first channel 14 through the first groove 162. It should be noted that the first plate 15 is a flat plate structure, which provides more stable support for the battery module 100, improving the convenience and stability of battery module 100 installation.

[0059] For example, the second plate 16 is manufactured by a stamping process to form a first protrusion 161 on the second surface and a first groove 162 corresponding to the first protrusion 161 on the first surface, which not only facilitates processing but also helps to reduce costs.

[0060] It should be noted that in this embodiment, the reinforcing member 3 of the battery box assembly can be matched with the flat mounting plate 1, and can also be matched with the mounting plate 1 with the first protrusion 161. In other words, the mounting member can be matched with mounting plates 1 of different structures to improve the structural strength of the mounting plate 1, thereby improving the versatility of the battery box assembly.

[0061] In some embodiments, the second gap is larger than the first gap, thereby improving the ease of assembly between the reinforcing member 3 and the mounting plate 1, and improving the assembly efficiency of the battery box assembly.

[0062] For example, the value of the first gap is in the range of 2mm-4mm. That is, the first gap can be any value between 2mm and 4mm, such as 2mm, 2.5mm, 3mm, 3.5mm or 4mm.

[0063] For example, the second gap can be in the range of 4mm-10mm. That is, the second gap can be any value between 4mm and 10mm, for example, the first gap can be 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm or 10mm.

[0064] In some embodiments, such as Figures 1 to 5 As shown, the battery housing assembly also includes a base plate 4, which is located on the side of the mounting plate 1 away from the battery module 100. The base plate 4 is fixedly connected to the frame 2, thereby improving the structural strength of the housing assembly and enhancing the safety of the battery pack.

[0065] For example, both the base plate 4 and the mounting plate 1 are fixedly connected to the frame 2 by fasteners such as bolts. Specifically, multiple fasteners are provided, and the multiple fasteners are spaced apart along the second direction.

[0066] In some embodiments, the reinforcing member 3 is disposed at the bottom of the mounting plate 1; the reinforcing member 3 and the base plate 4 are spaced apart in the vertical direction, thereby avoiding problems such as friction damage caused by contact between the reinforcing member 3 and the base plate 4.

[0067] In some embodiments, a cavity is provided between the mounting plate 1 and the base plate 4, which facilitates ball impact testing during the battery pack manufacturing process.

[0068] In some embodiments, the battery housing assembly further includes a support member 5, which is sandwiched between the mounting plate 1 and the base plate 4. The support member 5 can undergo elastic deformation and automatically reset, thereby not only supporting the mounting plate 1, but also eliminating the tolerances during the assembly of the mounting plate 1 and the base plate 4, and improving the ease of assembly.

[0069] Specifically, the support member 5 is located in the cavity between the mounting plate 1 and the base plate 4.

[0070] It should be noted that, since the reinforcing member 3 and the base plate 4 are spaced apart along the vertical direction, that is, the reinforcing member 3 and the base plate 4 do not contact each other, the supporting member 5 is offset from the reinforcing member 3 to avoid contact between the supporting member 5 and the reinforcing member 3.

[0071] For example, the support member 5 can be foam, rubber pad, etc.

[0072] In some embodiments, at least two support members 5 are provided, and the at least two support members 5 are spaced apart. This arrangement, compared to a single large-sized support member 5, facilitates the avoidance of other structures on the mounting plate 1 or base plate 4, and makes it easier to place support members 5 between mounting plates 1 and base plates 4 with different structures, thus improving versatility.

[0073] Specifically, the base plate 4 has multiple second protrusions on the side facing the mounting plate 1, and these second protrusions are spaced apart along a first direction. Further, the base plate 4 has multiple third protrusions on the side facing the mounting plate 1, and these third protrusions are spaced apart along a second direction. The multiple second and third protrusions divide the surface of the base plate 4 facing the mounting plate 1 into multiple regions, each region having a support member 5. This not only improves the supporting effect of the support member 5 on the mounting plate 1 and eliminates tolerances, but also improves the ease of assembly of the mounting plate 1, the support member 5, and the base plate 4.

[0074] For example, the base plate 4 is manufactured by a stamping process, and a second groove 41 corresponding to the second protrusion and a third groove 42 corresponding to the third protrusion are formed on the surface of the base plate 4 away from the mounting plate 1.

[0075] The battery pack of this embodiment, by applying the above-described battery housing assembly, can improve the reliability of the battery housing assembly, thereby improving the safety of the battery pack.

[0076] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A battery housing assembly for accommodating a battery module (100), characterized in that, include: The mounting plate (1) and the frame (2) are fixedly connected at one end of the mounting plate (1) along a first direction to the frame (2), and an installation space for accommodating the battery module (100) is formed between the mounting plate (1) and the frame (2); the battery module (100) includes a main body (101) and an electrode terminal (102) disposed on one side of the main body (101); A reinforcing member (3) is fixed to one end of the mounting plate (1) connected to the frame (2), and the reinforcing member (3) is located on the side of the mounting plate (1) away from the battery module (100); along the vertical direction, the projection of part of the reinforcing member (3) overlaps with the projection of the main body (101).

2. The battery housing assembly according to claim 1, characterized in that, Along the first direction, the length of the battery module (100) is a, and the width of the reinforcing member (3) is b; the value of b / a ranges from 0.032 to 0.

07. And / or, along the second direction, the length of the reinforcing member (3) is m, the length of the mounting plate (1) is n, and the value of m / n ranges from 0.464 to 0.855; the first direction and the second direction are perpendicular to the vertical direction.

3. The battery housing assembly according to claim 2, characterized in that, The value of a ranges from 1000mm to 1400mm; And / or, the value of b ranges from 45mm to 70mm; And / or, the value of m ranges from 650mm to 855mm; And / or, the value of n ranges from 1000mm to 1400mm.

4. The battery housing assembly according to claim 1, characterized in that, The reinforcing member (3) includes a first end (3a) and a second end (3b) disposed opposite to each other along the second direction; the mounting plate (1) includes a third end (1a) and a fourth end (1b) disposed opposite to each other along the second direction, wherein the third end (1a) and the first end (3a) are located on the same side of the reinforcing member (3); Along the second direction, the distance between the first end (3a) and the third end (1a) ranges from 50mm to 300mm. And / or, along the second direction, the distance between the second end (3b) and the fourth end (1b) ranges from 100mm to 400mm.

5. The battery housing assembly according to claim 1, characterized in that, The reinforcing member (3) includes a reinforcing part (31) and two connecting parts (32), the two connecting parts (32) are respectively connected to both sides of the reinforcing part (31) along the first direction; both connecting parts (32) are fixedly connected to the mounting plate (1); the reinforcing part (31) and the mounting plate (1) are spaced apart.

6. The battery housing assembly according to claim 1, characterized in that, The mounting plate (1) is provided with a first protrusion (161); the reinforcing member (3) is provided with a relief groove (311) corresponding to the first protrusion (161); A first gap is provided between the first protrusion (161) and the bottom wall (3111) of the clearance groove (311) in the vertical direction; And / or, along the first direction, a second gap is provided between the first protrusion (161) and the groove sidewall (3112) of the clearance groove (311).

7. The battery housing assembly according to claim 6, characterized in that, The second gap is larger than the first gap.

8. The battery housing assembly according to claim 1, characterized in that, The mounting plate (1) is a heat exchange plate.

9. The battery housing assembly according to claim 8, characterized in that, The battery module (100) includes multiple battery cells stacked along a second direction; the first direction and the second direction are perpendicular to each other with respect to the vertical direction; The heat exchange plate is provided with a heat exchange channel; the heat exchange channel includes a plurality of first channels (14) extending along the second direction, and the plurality of first channels (14) are spaced apart along the first direction.

10. The battery housing assembly according to claim 1, characterized in that, The frame (2) is provided in two parts, and the two frames (2) are respectively provided at both ends of the mounting plate (1) along the first direction; The mounting plate (1) is provided with the reinforcing member (3) at both ends along the first direction.

11. The battery housing assembly according to any one of claims 1-10, characterized in that, The battery housing assembly also includes a base plate (4), which is located on the side of the mounting plate (1) away from the battery module (100) and is fixedly connected to the frame (2).

12. The battery housing assembly according to claim 11, characterized in that, The reinforcing member (3) and the base plate (4) are spaced apart along the vertical direction.

13. The battery housing assembly according to claim 11, characterized in that, A cavity is provided between the mounting plate (1) and the base plate (4).

14. The battery housing assembly according to claim 11, characterized in that, The battery housing assembly also includes a support member (5), which is sandwiched between the mounting plate (1) and the base plate (4); the support member (5) is capable of elastic deformation and automatic reset.

15. The battery housing assembly according to claim 14, characterized in that, The support member (5) is provided in at least two, and the at least two support members (5) are arranged at intervals.

16. A battery pack, characterized in that, Includes the battery housing assembly as described in any one of claims 1-15.

17. The battery pack according to claim 16, characterized in that, The battery pack also includes a battery module (100) disposed in the installation space, the battery module (100) including a plurality of battery cells stacked along the second direction; the first direction and the second direction are perpendicular to the vertical direction; The length of the battery cell along the first direction is greater than the width of the battery cell along the second direction.

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