Battery box and battery pack, vehicle

Abstract

The present disclosure relates to the field of battery technology, and more particularly to a battery case, a battery pack, and a vehicle. The battery case includes a beam, a cover, and a buffer member, wherein the buffer member is disposed between the beam and the cover and connected to the beam and the cover. The cover is disposed on a side of the beam away from a base plate, and the buffer member is connected to the beam. The connection between the beam and the cover by the buffer member can buffer vibration of the cover, thereby resolving the problem of damage to the cover due to excessive vibration, thereby extending the service life of the cover, and preventing damage to the battery caused by vibration, thereby extending the battery service life.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a battery box, a battery pack, and a vehicle. Background Art

[0002] With the development and advancement of technology, electric vehicles are becoming increasingly popular. Batteries are a key component in electric vehicles and are typically housed in a battery case, which is mounted on the vehicle. The battery case consists of a main body and a cover, which is attached to the main body. During use, electric vehicles are often subject to significant vibrations, which can easily cause the cover to vibrate. This vibration can affect the structures within the battery case, such as the batteries and wiring, and can lead to safety issues.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a battery box, a battery pack, and a vehicle, thereby reducing the vibration of the box cover in the battery box at least to a certain extent.

[0005] According to a first aspect of the present disclosure, a battery case is provided, comprising:

[0006] beam;

[0007] box lid;

[0008] A buffer member is disposed between the beam and the box cover and connected to the beam.

[0009] The battery box provided by the embodiment of the present disclosure has a box cover provided on the side of the beam away from the bottom plate, a buffer member is provided between the beam and the box cover, and the buffer member is connected to the beam, which can buffer the vibration of the box cover and improve safety.

[0010] According to a second aspect of the present disclosure, a battery pack is provided, comprising:

[0011] The battery box mentioned above;

[0012] A battery pack is arranged in the battery box.

[0013] The battery pack provided by the embodiment of the present disclosure includes a battery case. In the battery case, a case cover is arranged on the side of the beam away from the bottom plate. The buffer parts connect the beam and the case cover respectively. The beam is connected by the buffer parts to provide buffering for the case cover, which can buffer the vibration of the case cover and improve safety.

[0014] According to a third aspect of the present disclosure, a vehicle is provided, comprising the above-mentioned battery pack.

[0015] The vehicle provided by the embodiment of the present disclosure includes a battery box. In the battery box, a box cover is arranged on the side of the beam away from the bottom plate. The buffer parts connect the beam and the box cover respectively. The beam is connected by the buffer parts to provide buffering for the box cover, which can buffer the vibration of the box cover and improve safety.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0018] Figure 1 A schematic diagram of a first battery box provided by an exemplary embodiment of the present disclosure;

[0019] Figure 2 A schematic diagram of a second battery box provided by an exemplary embodiment of the present disclosure;

[0020] Figure 3 A schematic diagram of a battery pack provided by an exemplary embodiment of the present disclosure;

[0021] Figure 4 A schematic diagram of a buffer provided by an exemplary embodiment of the present disclosure;

[0022] Figure 5 A schematic diagram of a third battery box provided by an exemplary embodiment of the present disclosure;

[0023] Figure 6 A schematic diagram of another buffer member provided by an exemplary embodiment of the present disclosure;

[0024] Figure 7 A schematic diagram of a fourth battery box provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0026] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0027] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0028] The exemplary embodiment of the present disclosure first provides a battery box, such as Figure 1 As shown, the battery box includes: a beam 110 , a box cover 120 and a buffer member 130 . The buffer member 130 is disposed between the beam 110 and the box cover 120 and connected to the beam 110 .

[0029] The battery case provided by the disclosed embodiment has a cover 120 disposed on the side of the beam 110 away from the bottom plate, and a buffer 130 connected to the beam 110. The buffer 130 between the beam 110 and the cover 120 can buffer vibrations of the cover 120, improving safety and eliminating the problem of damage to the cover 120 due to excessive vibration, thereby extending the service life of the cover 120. Vibration also prevents the cover 120 from damaging the batteries, thereby extending the battery life.

[0030] The following is a detailed description of the various parts of the battery box provided in the embodiment of the present disclosure:

[0031] like Figure 2As shown, in the embodiment of the present disclosure, the beam 110 can be provided on the bottom plate 170. The bottom plate 170 can be a flat plate structure or a nearly flat plate structure. For example, the bottom plate 170 can be a stainless steel plate or an aluminum alloy plate. A receiving area is provided on the bottom plate 170, and the receiving area is used to place batteries or battery packs. The orthographic projection of the battery or battery pack on the bottom plate is located in the receiving area. The battery or battery pack can be placed directly in the receiving area, or other devices, such as cooling devices, can be provided between the battery or battery pack and the bottom plate. The embodiment of the present disclosure does not specifically limit this.

[0032] like Figure 3 As shown, a frame 140 and beams 110 may be provided on the bottom plate 170. The frame 140 includes a plurality of frame beams, which are used to form a receiving portion for placing the battery 150. The beams 110 are provided in the receiving portion and divide the receiving portion into a plurality of battery compartments. Each battery compartment is provided with a battery pack, which contains a plurality of batteries 150. When the battery 150 is provided in the battery compartment, the frame 140 and / or the beams 110 are connected to the battery 150 to bear at least part of the weight of the battery 150.

[0033] In the disclosed embodiment, the battery 150 is placed directly in the battery compartment, eliminating the need to package multiple batteries into a battery module and then install them in the compartment. The battery can directly contact the base plate, frame 140, and beam 110. Alternatively, the battery can be connected to the frame 140 and beam 110 using adhesive or other connection methods. The beam 110 and frame 140 bear at least part of the weight of the battery.

[0034] Placing the batteries directly in the battery compartment increases the number of batteries in the compartment, thereby improving the energy density of the battery pack. Because the batteries are directly mounted in the compartment, the cover 120 could come into direct contact with the batteries during vibration, potentially damaging them. Connecting the cover 120 and beam 110 with the buffer 130 prevents the cover 120 from damaging the batteries during vibration, while also preventing damage to the cover 120 itself. Furthermore, the vibration of the cover 120 drives the vibration of the box body, which helps mix the electrolyte in the batteries and thus improves the battery reaction.

[0035] The housing area on the bottom plate can be a rectangular structure, and the frame 140 can include four frame beams connected end to end to form the frame 140. For example, the battery pack can include a first frame beam, a second frame beam, a third frame beam, and a fourth frame beam. The first frame beam, the second frame beam, the third frame beam, and the fourth frame beam are connected end to end and welded to form a frame.

[0036] The beam 110 may be disposed within the frame. The beam 110 may include a first beam (transverse beam) and a second beam (longitudinal beam). The first beam and the second beam are disposed to intersect, for example, the first beam and the second beam are disposed perpendicularly.

[0037] The battery case may include a first beam and a second beam, the first beam being parallel to the first frame beam, and the second beam being parallel to the second frame beam. The first beam and the second beam divide the storage area into four battery compartments, with batteries or battery packs arranged in each of the four battery compartments. In practical applications, there may be multiple first beams and second beams, and the disclosed embodiments are not limited thereto.

[0038] The beam 110 and the bottom plate can be connected by welding, and the frame beam can be connected by welding to the bottom plate. The bottom surface of the beam 110 contacts the top surface of the bottom plate. The bottom surface of the beam 110 is flat, and the top surface of the bottom plate is flat. Therefore, the beam 110 and the bottom plate can be connected by fillet welding on both sides of the beam 110. The bottom surface of the frame beam contacts the top surface of the bottom plate. The bottom surface of the frame beam is flat, and the top surface of the bottom plate is flat. Therefore, the frame beam and the bottom plate can be connected by fillet welding on the inside and outside of the frame beam.

[0039] Furthermore, to improve the connection strength between the beam 110 and the base plate, a glue groove can be provided on the base plate and / or the beam 110, and a connecting glue layer can be provided in the glue groove to connect the base plate and the beam 110. The glue groove can be provided on the beam 110, or the glue groove can be provided on the base plate, or glue grooves can be provided on both the base plate and the beam 110. A glue injection channel can be provided on the beam 110 or the base plate, and the glue injection channel is used to communicate with the outside world after the beam 110 is connected to the base plate. The glue injection channel is connected to the glue groove, and a connecting glue layer is provided in the glue groove to adhesively connect the base plate and the beam 110.

[0040] A buffer 130 is provided on the beam 110 and is located on the side of the inner beam 110 away from the bottom plate. Alternatively, the buffer 130 may be provided on both the beam 110 and the frame beam, which is not specifically limited in the present embodiment.

[0041] For example, a first beam and a second beam are disposed within a frame 140 formed by the frame beams, and the first beam and the second beam are disposed perpendicularly. A plurality of buffer members 130 are disposed on the first beam, and the plurality of buffer members 130 can be evenly distributed on the first beam. A plurality of buffer members 130 are disposed on the second beam, and the plurality of buffer members 130 can be evenly distributed on the second beam.

[0042] The buffer member 130 can be connected to the beam 110. In this case, the end of the buffer member 130 away from the beam 110 can provide a buffer to the box cover 120 when the box cover 120 approaches the beam 110. Alternatively, the two ends of the buffer member 130 can be connected to the beam 110 and the box cover 120 respectively.

[0043] As an example, the first end of buffer 130 is connected to the side of beam 110 near cover 120, facilitating connection between buffer 130 and beam 110 while preventing interference with other structures within the battery case. The second end of buffer 130 is connected to the side of cover 120 near beam 110. Connecting buffer 130 to both beam 110 and cover 120 provides enhanced cushioning, and connecting buffer 130 to the side of cover 120 near beam 110 facilitates connection between the two.

[0044] The buffer member 130 and the beam 110 may be connected by one or more of bolt connection, riveting, welding, and adhesive connection. For example, the buffer member 130 and the beam 110 may be connected by a combination of bolt connection and adhesive connection; or the buffer member 130 and the beam 110 may be connected by a combination of riveting and adhesive connection; or the buffer member 130 and the beam 110 may be connected by a combination of welding and adhesive connection.

[0045] When the buffer 130 and the beam 110 are connected by glue, a glue groove can be provided on a surface of the buffer 130 close to the beam 110 , and the glue groove is filled with connecting glue to bond the buffer 130 and the beam 110 together.

[0046] If the buffer 130 and beam 110 are still connected by bolts, a bolt hole needs to be provided on the buffer 130. In this case, the glue groove and the bolt hole do not intersect. In other words, the extension path of the glue groove needs to avoid the bolt hole. Alternatively, if the buffer 130 and beam 110 are still connected by welding, a welding area can be provided on the edge of the buffer 130, and the glue groove is located between the welding areas on both sides of the buffer 130.

[0047] One or more connection areas may be provided on the side of the box cover 120 near the bottom plate, which are used to connect to the buffer member 130. The buffer member 130 and the box cover 120 may be connected by one or more of bolting, riveting, welding, and gluing. For example, the buffer member 130 and the box cover 120 may be connected by a combination of bolting and gluing; or by a combination of riveting and gluing; or by a combination of welding and gluing.

[0048] When the buffer 130 and the box cover 120 are connected by glue, a glue groove can be provided on the side of the buffer 130 close to the box cover 120, and the glue groove is filled with connecting glue to bond the buffer 130 and the box cover 120 together.

[0049] If the buffer 130 and the cover 120 are still connected by bolts, a bolt hole needs to be provided on the buffer 130. In this case, the glue groove and the bolt hole do not intersect. In other words, the extension path of the glue groove needs to avoid the bolt hole. Alternatively, if the buffer 130 and the cover 120 are still connected by welding, a welding area can be provided on the edge of the buffer 130, and the glue groove is located between the welding areas on both sides of the buffer 130.

[0050] In a feasible embodiment of the present disclosure, if Figure 4 As shown, the buffer member 130 includes: a first connecting portion 131, a second connecting portion 132 and a buffer portion 133, the first connecting portion 131 is used to connect the beam 110; the second connecting portion 132 is used to connect the box cover 120; one end of the buffer portion 133 is connected to the first connecting portion 131, and the other end of the buffer portion 133 is connected to the second connecting portion 132.

[0051] The surface of the first connection portion 131 close to the beam 110 may be a plane, which contacts the top surface of the beam 110. The first connection portion 131 and the beam 110 may be connected by welding, bolting, riveting or adhesive connection.

[0052] A surface of the second connection portion 132 close to the box cover 120 may be a plane, which contacts the top surface of the beam 110. The first connection portion 131 and the beam 110 may be connected by welding, bolting, riveting, or gluing.

[0053] One end of the buffer portion 133 is connected to the first connection portion 131, and the other end of the buffer portion 133 is connected to the second connection portion 132. The buffer portion 133 is used to provide a buffer when the box cover 120 vibrates, thereby preventing the box cover 120 from vibrating excessively. For example, the buffer portion 133 can be elastic. When the force applied by the box cover 120 to the buffer member 130 exceeds a preset threshold, the buffer portion 133 can elastically deform, thereby buffering the vibration of the box cover 120.

[0054] The first connection portion 131, the second connection portion 132, and the buffer portion 133 of the buffer member 130 can be an integral structure. For example, the first connection portion 131, the second connection portion 132, and the buffer portion 133 of the buffer member 130 can be integrally formed by casting or machining. Alternatively, the first connection portion 131, the second connection portion 132, and the buffer portion 133 of the buffer member 130 can be separate structures. For example, the buffer portion 133 and the first connection portion 131 and the second connection portion 132 can be connected by welding, or by riveting, or by bolts. Of course, in actual applications, the buffer portion 133 and the first connection portion 131 and the second connection portion 132 can also be connected by other means, and the embodiments of the present disclosure are not limited thereto.

[0055] The first connecting portion 131, the second connecting portion 132, and the buffer portion 133 can be made of the same material. For example, the first connecting portion 131, the second connecting portion 132, and the buffer portion 133 can be made of stainless steel or an aluminum alloy. When the first connecting portion 131, the second connecting portion 132, and the buffer portion 133 are made of the same material and are flat plates, the thickness of the first connecting portion 131 is greater than that of the buffer portion 133, and the thickness of the second connecting portion 132 is greater than that of the buffer portion 133. The greater thickness of the first connecting portion 131 and the second connecting portion 132 ensures the connection strength between the buffer member 130 and the beam 110, and between the buffer portion 133 and the box cover 120. The smaller thickness of the buffer portion 133 ensures that its stiffness is within a predetermined range, allowing it to elastically deform when the box vibrates.

[0056] Alternatively, the first connecting portion 131, the second connecting portion 132, and the buffer portion 133 are made of different materials, and the stiffness of the first connecting portion 131 and the second connecting portion 132 is greater than that of the buffer portion 133. The high stiffness of the first connecting portion 131 and the second connecting portion 132 can ensure the connection stability between the beam 110 and the buffer member 130, and between the buffer member 130 and the box cover 120. The low stiffness of the buffer portion 133 can ensure that the stiffness of the buffer portion 133 is within the preset requirement range, so that the buffer portion 133 can undergo elastic deformation when the box body vibrates. On this basis, when the first connecting portion 131, the second connecting portion 132, and the buffer portion 133 are flat plate structures, the thickness of the first connecting portion 131, the second connecting portion 132, and the buffer portion 133 can be the same. The same thickness of the first connecting portion 131, the second connecting portion 132, and the buffer portion 133 facilitates manufacturing.

[0057] In the embodiment of the present disclosure, the buffer member 130 may be, but is not limited to, an I-shape, a Z-shape, an L-shape, etc.

[0058] The first connecting portion 131 extends perpendicularly to the direction of extension of the buffer portion 133, while the second connecting portion 132 extends in the same direction as the first connecting portion 131. This provides a simple structure and excellent cushioning effect. As an example, the first connecting portion 131, the second connecting portion 132, and the buffer portion 133 form a C-shaped cushioning member. This C-shaped cushioning member offers a simple structure, ease of manufacture, and excellent cushioning effect.

[0059] It should be noted that in the disclosed embodiment, the extension direction of the first connection portion 131 and the extension direction of the buffer portion 133 are perpendicular to each other, meaning that the extension directions of the first connection portion 131 and the buffer portion 133 are perpendicular to each other within the tolerance range allowed by the process. The angle between the extension directions of the first connection portion 131 and the buffer portion 133 is a right angle, or the acute angle between the extension directions of the first connection portion 131 and the buffer portion 133 is greater than a preset angle threshold. For example, the acute angle between the extension directions of the first connection portion 131 and the buffer portion 133 is greater than 89 degrees, 88 degrees, or 87 degrees. The extension direction of the second connection portion 132 is consistent with the extension direction of the first connection portion 131, meaning that the first and second connection portions 131, 132 are located on one side of the buffer portion 133 and are arranged parallel to each other. The parallel arrangement of the first connection portion 131 and the second connection portion 132 means that the extension direction of the first connection portion 131 and the extension direction of the second connection portion 132 are parallel to each other within the error range allowed by the process, and the acute angle between the extension direction of the first connection portion 131 and the extension direction of the second connection portion 132 is smaller than a preset threshold value. For example, the acute angle between the extension direction of the first connection portion 131 and the extension direction of the second connection portion 132 is smaller than 3 degrees, 2 degrees or 1 degree, etc.

[0060] The buffer member 130 may be directly connected to the box cover 120, or the buffer member 130 may be indirectly connected to the box cover 120. The buffer member 130 and the box cover 120 may be directly connected by one or more connection methods including bolt connection, riveting, welding and adhesive connection.

[0061] Alternatively, a cold plate may be provided on the side of the cover 120 near the base plate, connected to the cover 120, and the buffer 130 may be connected to the cold plate. The cold plate and cover 120 may be connected by one or more of welding, bolting, riveting, and gluing. The buffer 130 may also be connected to the cold plate by one or more of welding, bolting, riveting, and gluing.

[0062] For example, a mounting area is provided on the cover 120, and the cold plate is mounted in the mounting area. The mounting area can be a recessed pit on the cover 120, and the cold plate is disposed within the recessed pit. The second connecting portion 132 is connected to the cold plate, and the second connecting portion 132 and the cold plate can be connected by one or more of welding, bolting, riveting, and gluing.

[0063] Alternatively, a cold plate may be integrated into the cover 120. For example, a coolant channel may be provided on the side of the cover 120 near the beam 110 to cool the battery via the coolant in the channel. Alternatively, the coolant channel may be provided inside the cover, which is not specifically limited in the present embodiment.

[0064] In the disclosed embodiment, the buffer member 130 further includes a first reinforcement portion 135 and a second reinforcement portion 136. The first reinforcement portion 135 connects the first connecting portion 131 and the buffer portion 133, respectively; the second reinforcement portion 136 connects the second connecting portion 132 and the buffer portion 133, respectively. The first reinforcement portion 135 is used to strengthen the connection between the first connecting portion 131 and the buffer portion 133, while the second reinforcement portion 136 is used to strengthen the connection between the first connecting portion 131 and the buffer portion 133.

[0065] The first reinforcement portion 135 may be a first reinforcement rib provided at the connection between the first connection portion 131 and the buffer portion 133 . The second reinforcement portion 136 may be a second reinforcement rib provided at the connection between the second connection portion 132 and the buffer portion 133 .

[0066] In another feasible embodiment of the present disclosure, Figure 5 and Figure 6 As shown, the buffer member 130 includes a first connecting portion 131, a second connecting portion 132, a third connecting portion 134, and a buffer portion 133. The first connecting portion 131 is used to connect to the beam 110; the second connecting portion 132 is used to connect to the box cover 120; one end of the buffer portion 133 is connected to the first connecting portion 131, and the other end of the buffer portion 133 is connected to the second connecting portion 132. The third connecting portion 134 is connected to the buffer portion 133 and is located between the first connecting portion 131 and the second connecting portion 132.

[0067] On this basis, the battery box further includes a cooling member 140 (e.g., a cold plate), which is disposed between the beam 110 and the box cover 120 and is connected to the third connecting portion 134. The cooling member 140 is limited by the third connecting portion 134 to prevent the cooling member 140 from vibrating.

[0068] Of course, in actual applications, the battery box may further include a connecting harness, a conductive bar or a connector, etc. The connecting harness, the conductive bar or the connector may be connected to the third connecting portion 134 , but the embodiment of the present disclosure is not limited thereto.

[0069] The side of the first connecting portion 131 close to the beam 110 can be a plane, which is in contact with the top surface of the beam 110. The first connecting portion 131 and the beam 110 can be connected by welding, bolting, riveting or gluing. The side of the second connecting portion 132 close to the box cover 120 can be a plane, which is in contact with the top surface of the beam 110. The first connecting portion 131 and the beam 110 can be connected by welding, bolting, riveting or gluing. The side of the third connecting portion 134 close to the box cover 120 can be a plane, which is in contact with the bottom surface of the cooling member 140. The third connecting portion 134 and the box cover 120 can be connected by welding, bolting, riveting or gluing.

[0070] One end of the buffer portion 133 is connected to the first connection portion 131, and the other end of the buffer portion 133 is connected to the second connection portion 132. The buffer portion 133 is used to provide a buffer when the box cover 120 vibrates, thereby preventing the box cover 120 from vibrating excessively. For example, the buffer portion 133 can be elastic. When the force applied by the box cover 120 to the buffer member 130 is greater than a preset threshold, the buffer portion 133 can undergo elastic deformation, thereby buffering the vibration of the box cover 120. The third connection portion 134 is connected to the buffer portion 133 and is located between the first connection portion 131 and the second connection portion 132. The third connection portion 134 is used to connect to the cooling member 140.

[0071] The first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 of the buffer member 130 can be an integral structure. For example, the first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 of the buffer member 130 can be integrally formed by casting or machining. Alternatively, the first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 of the buffer member 130 can be a separate structure. For example, the buffer portion 133 and the first connection portion 131, the second connection portion 132 and the third connection portion 134 can be connected by welding, or the buffer portion 133 and the first connection portion 131, the second connection portion 132 and the third connection portion 134 can be connected by riveting, or the buffer portion 133 and the first connection portion 131, the second connection portion 132 and the third connection portion 134 can be connected by bolts. Of course, in actual applications, the buffer portion 133 and the first connection portion 131, the second connection portion 132 and the third connection portion 134 can also be connected by other means, and the embodiments of the present disclosure are not limited to this.

[0072] For example, the second connection portion 132 and the buffer portion 133 can be a separate structure. A through hole is provided on the cooling member 140, and the buffer portion 133 is inserted into the through hole. The second connection portion 132 and the buffer portion 133 are separate structures. During installation, the buffer portion 133 can be inserted into the through hole on the cold plate, and then the second connection portion 132 and the buffer portion 133 can be connected to facilitate the installation of the cooling member 140. The size of the through hole on the cold plate is smaller than the size of the third connection portion 134, so that the third connection portion 134 can support the cold plate.

[0073] The first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 can be made of the same material. For example, the first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 can be made of stainless steel or an aluminum alloy. When the first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 are made of the same material and are flat plates, the thickness of the first connecting portion 131 is greater than that of the buffer portion 133, the thickness of the second connecting portion 132 is greater than that of the buffer portion 133, and the thickness of the third connecting portion 134 is greater than that of the buffer portion 133. The large thickness of the first connecting portion 131, the second connecting portion 132, and the third connecting portion 134 ensures the connection strength between the buffer member 130 and the beam 110, and between the buffer portion 133 and the box cover 120. The small thickness of the buffer portion 133 can ensure that the rigidity of the buffer portion 133 is within a preset required range, so that the buffer portion 133 can undergo elastic deformation when the box body vibrates.

[0074] Alternatively, the first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 may be made of different materials, and the stiffness of the first connecting portion 131, the second connecting portion 132, and the third connecting portion 134 may be greater than the stiffness of the buffer portion 133. The high stiffness of the first connecting portion 131, the second connecting portion 132, and the third connecting portion 134 ensures the stability of the connection between the beam 110 and the buffer member 130, and between the buffer member 130 and the box cover 120. The low stiffness of the buffer portion 133 ensures that the stiffness of the buffer portion 133 is within the preset required range, thereby allowing the buffer portion 133 to elastically deform when the box body vibrates. Furthermore, if the first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 are flat plates, the thicknesses of the first connecting portion 131, the second connecting portion 132, the third connecting portion 134, and the buffer portion 133 may be the same. The first connection portion 131 , the second connection portion 132 , the third connection portion 134 and the buffer portion 133 have the same thickness for easy manufacturing.

[0075] The first connection portion 131 extends in a direction perpendicular to that of the buffer portion 133, and the second connection portion 132 and the third connection portion 134 extend in the same direction as that of the first connection portion 131. In other words, the first connection portion 131, the second connection portion 132, the third connection portion 134, and the buffer portion 133 form an E-shape.

[0076] It should be noted that in the embodiment of the present disclosure, the extension direction of the third connection portion 134 is consistent with the extension direction of the first connection portion 131, which means that the first connection portion 131 and the third connection portion 134 are located on one side of the buffer portion 133 and are arranged in parallel. The first connection portion 131 and the third connection portion 134 are arranged in parallel, which means that the extension direction of the first connection portion 131 and the extension direction of the third connection portion 134 are arranged in parallel within the tolerance range allowed by the process, and the acute angle between the extension direction of the first connection portion 131 and the extension direction of the third connection portion 134 is less than a preset threshold. For example, the acute angle between the extension direction of the first connection portion 131 and the extension direction of the third connection portion 134 is less than 3 degrees, 2 degrees, or 1 degree.

[0077] In the disclosed embodiment, the buffer member 130 further includes a first reinforcement portion 135, a second reinforcement portion 136, and a third reinforcement portion 137. The first reinforcement portion 135 connects the first connecting portion 131 and the buffer portion 133, respectively; the second reinforcement portion 136 connects the second connecting portion 132 and the buffer portion 133, respectively; and the third reinforcement portion 137 connects the buffer portion 133 and the third connecting portion 134, respectively. The first reinforcement portion 135 is used to strengthen the connection between the first connecting portion 131 and the buffer portion 133, while the second reinforcement portion 136 is used to strengthen the connection between the first connecting portion 131 and the buffer portion 133. The second reinforcement portion 136 is used to strengthen the connection between the first connecting portion 131 and the buffer portion 133.

[0078] The first reinforcement portion 135 may be a first reinforcement rib provided at the connection between the first connection portion 131 and the buffer portion 133. The second reinforcement portion 136 may be a second reinforcement rib provided at the connection between the second connection portion 132 and the buffer portion 133. The third reinforcement portion 137 may be a third reinforcement rib provided at the connection between the third connection portion 134 and the buffer portion 133.

[0079] In another feasible embodiment of the present disclosure, Figure 7 As shown, the buffer member 130 may include a spring 138, one end of the spring 138 being connected to the beam 110, and the other end of the spring 138 being connected to the box cover 120 assembly. The first end of the spring 138 is connected to a side of the beam 110 close to the box cover 120, and the second end of the spring 138 is connected to a side of the box cover 120 close to the beam 110.

[0080] In order to connect the spring 138 to the beam 110 and the box cover 120, the battery case provided by the embodiment of the present disclosure may further include: a first connecting member 150 and a second connecting member 160, wherein the first connecting member 150 connects the beam 110 and the spring 138; and the second connecting member 160 connects the beam 110 and the spring 138. For example, the first connecting member 150 may be a first connecting seat, which is connected to the beam 110 by one or more of bolt connection, welding, riveting, and gluing. A first mounting portion is provided on the first connecting seat, and the first end of the spring 138 is connected to the first mounting portion. The second connecting member 160 may be a second connecting seat, which is connected to the box cover 120 by one or more of bolt connection, welding, riveting, and gluing. A second mounting portion is provided on the first connecting seat, and the second end of the spring 138 is connected to the second mounting portion.

[0081] The battery case provided by the embodiment of the present disclosure is provided with a box cover 120 on the side of the beam 110 away from the bottom plate, and the buffer member 130 connects the beam 110 and the box cover 120 respectively. The beam 110 and the box cover 120 are connected by the buffer member 130, which can buffer the vibration of the box cover 120, thereby solving the problem that the box cover 120 may be damaged by excessive vibration, improving the service life of the box cover 120, and avoiding the box cover 120 from damaging the battery during vibration, thereby improving the service life of the battery.

[0082] Furthermore, in the disclosed embodiment, the battery is placed directly in the battery compartment, and there is no need to package multiple batteries into a battery module and then install them in the battery compartment. The number of batteries in the battery compartment can be increased, thereby improving the energy density of the battery pack. Since the battery is directly installed in the battery compartment, the box cover 120 may directly contact the battery during vibration, causing the battery to be damaged. The buffer 130 connects the box cover 120 and the beam 110 to avoid the box cover 120 damaging the battery during vibration, and also avoids the box cover 120 being damaged. Furthermore, the vibration of the box cover 120 can drive the box body to vibrate, which is beneficial to the mixing of the electrolyte in the battery, thereby facilitating the battery reaction.

[0083] An exemplary embodiment of the present disclosure further provides a battery pack, which includes the above-mentioned battery case and a battery pack, wherein the battery pack is disposed in the battery case.

[0084] The battery box includes a bottom plate, a beam 110 and a box cover 120 . The buffer member 130 is disposed between the beam 110 and the box cover 120 and is connected to the beam 110 and the box cover 120 .

[0085] Furthermore, the battery box may further include a frame 140, which is disposed on the bottom plate. The frame 140 and the beam 110 form a plurality of battery compartments on the bottom plate, each of which is provided with a battery pack. The battery pack includes at least two batteries, which are sequentially arranged in the battery compartments.

[0086] A connecting adhesive layer may be provided between adjacent batteries in at least two batteries, and the multiple batteries are bonded together using the connecting adhesive layer.

[0087] The battery pack provided by the embodiment of the present disclosure includes a battery case. In the battery case, a case cover 120 is arranged on the side of the beam 110 away from the bottom plate, and a buffer member 130 connects the beam 110 and the case cover 120 respectively. The beam 110 and the case cover 120 are connected by the buffer member 130, which can buffer the vibration of the case cover 120, thereby solving the problem that excessive vibration of the case cover 120 may damage the case cover 120, improving the service life of the case cover 120, and avoiding the case cover 120 from damaging the battery during vibration, thereby improving the service life of the battery.

[0088] The present disclosure also provides a vehicle, which may be an electric vehicle. The vehicle includes the battery pack described above, and the battery pack provides energy to the electric vehicle.

[0089] The battery pack includes a battery case and a battery pack. The battery pack is located in the battery case, which includes a bottom plate, a beam 110, a frame 140, and a cover 120. The buffer 130 is located between the beam 110 and the cover 120 and is connected to the beam 110 and the cover 120. The frame 140 is located on the bottom plate. The frame 140 and the beam 110 form multiple battery compartments on the bottom plate, each of which houses a battery pack.

[0090] The vehicle provided by the embodiments of the present disclosure includes a battery housing. Within the battery housing, a housing cover 120 is disposed on a side of a beam 110 away from a floor. A buffer 130 is connected to the beam 110. The buffer 130 between the beam 110 and the housing cover 120 can buffer vibrations of the housing cover 120, improving safety and preventing damage to the housing cover 120 due to excessive vibration, thereby increasing the service life of the housing cover 120. Vibration also prevents the housing cover 120 from damaging the battery, thereby increasing the battery's service life.

[0091] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A battery box, characterized in that: The battery box includes: beam; box lid; a frame, the frame being connected to the bottom plate, and the frame and the beam forming a plurality of battery compartments on the bottom plate, the battery compartments being used to accommodate batteries, and when the batteries are arranged in the battery compartments, the frame and / or the beam are connected to the batteries; A buffer member is provided between the beam and the box cover and is connected to the beam, wherein a first end of the buffer member is connected to a side of the beam close to the box cover, and a second end of the buffer member is connected to a side of the box cover close to the beam; the buffer member comprises: a first connecting portion, the first connecting portion being used to connect the beam; a second connecting portion, the second connecting portion being used to connect the box cover; A buffer portion, one end of the buffer portion is connected to the first connection portion, and the other end of the buffer portion is connected to the second connection portion.

2. The battery box according to claim 1, wherein: An extending direction of the first connecting portion is perpendicular to an extending direction of the buffer portion, and an extending direction of the second connecting portion is consistent with an extending direction of the first connecting portion.

3. The battery box according to claim 2, characterized in that: The buffer is C-shaped.

4. The battery case according to claim 1, wherein: The buffer member further comprises: A third connecting portion is connected to the buffer portion and is located between the first connecting portion and the second connecting portion.

5. The battery case according to claim 4, wherein: The extending direction of the first connecting portion is perpendicular to the extending direction of the buffer portion, the extending direction of the second connecting portion is consistent with the extending direction of the first connecting portion, and the extending direction of the third connecting portion is consistent with the extending direction of the first connecting portion, so as to form an E-shaped buffer.

6. The battery case according to claim 4, wherein: The battery box further includes: A cooling member is provided between the beam and the box cover, and the cooling member is connected to the third connecting portion.

7. The battery box according to any one of claims 1 to 6, characterized in that: The buffer member further comprises: a first reinforcement portion, the first reinforcement portion connecting the first connection portion and the buffer portion respectively; A second reinforcement portion is provided, wherein the second reinforcement portion is connected to the second connection portion and the buffer portion respectively.

8. The battery case according to claim 1, wherein: The buffer member comprises: A spring, one end of the spring is connected to the beam, and the other end of the spring is connected to the box cover.

9. The battery case according to claim 8, wherein: The battery box further includes: a first connecting member connecting the beam and the spring; A second connecting member connects the beam and the spring.

10. A battery pack, characterized in that: The battery pack includes: The battery box according to any one of claims 1 to 9; A battery pack is arranged in the battery box.

11. A vehicle, characterized in that: The vehicle includes the battery pack according to claim 10.

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