Battery box and vehicle comprising same

Abstract

The utility model discloses a battery box and a vehicle comprising the battery box, the battery box comprises a battery module and a heat dissipation shell, the battery module comprises a confluence plate arranged on one side, the heat dissipation shell is arranged on the side, adjacent to and / or opposite to the confluence plate, of the battery module, and the heat dissipation shell is provided with an inner surface facing the battery module; the heat dissipation shell comprises a pasting area and a fixing area. An annular groove is concavely formed in the inner surface of the heat dissipation shell, an area surrounded by the annular groove forms a bonding area, the bonding area is bonded with the battery module through heat-conducting glue, the fixing area is located on the outer side of the annular groove and surrounds the bonding area, and the heat dissipation shell and the battery module are detachably connected through a fastener by the fixing area. According to the scheme, the heat dissipation shell and the battery module are detachably assembled, the inner surface of the heat dissipation shell or the outer surface of the battery module is allowed to be uniformly coated with the heat-conducting glue before assembly, and then the heat dissipation shell and the battery module are fixed. Through the design, the heat-conducting glue is coated more uniformly, so that the heat dissipation uniformity of the battery is improved, and the service life of the battery is prolonged.

Description

Technical Field

[0001] This disclosure generally relates to the field of battery technology. More specifically, this disclosure relates to a battery box, and further, this disclosure also relates to a vehicle that includes a battery box. Background Technology

[0002] Lithium-ion batteries are widely used in electric vehicles, mobile devices, and cameras due to their advantages such as light weight and good safety performance. As is well known, battery cells exposed to high temperatures for extended periods can experience problems such as abnormal self-discharge and increased internal resistance; therefore, batteries require heat dissipation capabilities.

[0003] Common batteries with heat dissipation functions consist of a battery module and a casing surrounding the battery module. During assembly, the casing is installed onto the battery module, and then adhesive is injected into the pre-drilled opening between the battery module and the casing to fill the gap. Due to limitations in manufacturing methods and battery pack size, the opening and the gap between them are usually very small, leading to increased difficulty in adhesive application, low efficiency, adhesive waste, and uneven application. These problems can cause abnormal temperatures in the battery pack during use, thus affecting its lifespan.

[0004] In view of this, there is an urgent need to provide a battery box and a vehicle solution including the battery box, so as to apply the adhesive between the battery module and the housing more evenly, thereby enabling the battery to dissipate heat evenly. Utility Model Content

[0005] In order to at least address the technical problems mentioned above, this disclosure proposes a battery box capable of uniform heat dissipation and a vehicle solution including the battery box in several aspects.

[0006] In a first aspect, this disclosure provides a battery box including a battery module and a heat sink. The battery module includes a busbar disposed on one side, and the heat sink is disposed on the side of the battery module adjacent to and / or opposite to the busbar. The heat sink has an inner surface facing the battery module and includes an adhesive area and a fixing area. The inner surface of the heat sink has an annular groove recessed therein, and the area enclosed by the annular groove forms the adhesive area. The adhesive area is adhered to the battery module by thermally conductive adhesive. The fixing area is located outside the annular groove and surrounds the adhesive area. The fixing area allows the heat sink and the battery module to be detachably connected by a plurality of fasteners.

[0007] In some embodiments, the heat dissipation housing includes at least two side heat dissipation housings, which are respectively disposed on the side of the battery module adjacent to the busbar and symmetrically disposed on two opposite side surfaces of the battery module.

[0008] In some embodiments, the heat dissipation housing further includes a bottom heat dissipation housing disposed on the side of the battery module opposite to the busbar; the battery box further includes a protective cover disposed on the outside of the battery module and detachably connected to the heat dissipation housing.

[0009] In some embodiments, the protective cover includes a main protective cover and an end protective cover. The main protective cover is disposed on the outside of the busbar, and the end protective cover is disposed on the side of the battery module adjacent to the busbar. The main protective cover and the end protective cover are detachably connected to the heat dissipation shell.

[0010] In some embodiments, the protective cover has a connecting portion, and the protective cover is detachably connected to the heat dissipation shell through the connecting portion. The end protective cover includes two oppositely arranged end protective covers, and the two end protective covers are respectively connected to the main protective cover.

[0011] In some embodiments, the battery module includes two end plates disposed opposite to each other, the two end plates being located inside the two end protective covers respectively, and the heat dissipation shell being detachably connected to the end plates respectively.

[0012] In some embodiments, the battery box further includes a transition plate disposed between the battery module and the heat dissipation shell, and the thermally conductive adhesive is applied between the transition plate and the bonding area so that the bonding area of ​​the heat dissipation shell is bonded and fixed to the outer surface of the transition plate.

[0013] In some embodiments, the end of the transition plate is provided with a bending portion and a clearance portion. The bending portion is detachably connected to the end plate via a connector. The clearance portion accommodates part of the end plate and provides connection space for at least one of the fasteners, so that the fixing area abuts against the end plate and is detachably connected via the fastener.

[0014] In some embodiments, the heat sink further has an outer surface facing away from the battery module, and a plurality of spaced heat dissipation teeth protrude from the outer surface, the heat dissipation teeth extending along the length or width direction of the heat sink.

[0015] In a second aspect, this disclosure provides a vehicle that includes the aforementioned battery box.

[0016] The battery case provided above, in this embodiment, is assembled by detachably connecting the heat sink and the battery module. This allows for the uniform application of thermally conductive adhesive to the inner surface of the heat sink or the outer surface of the battery module before fixing the heat sink and battery module. This arrangement enables more even application of the thermally conductive adhesive, resulting in more uniform heat dissipation and improved battery lifespan. Furthermore, in some embodiments, the heat sink is positioned on the side surfaces of the battery module, allowing for more effective utilization of air convection and accelerating heat transfer from the heat source to the surrounding environment, thereby improving overall heat dissipation efficiency. Even further, in some embodiments, the heat dissipation area is increased by providing heat dissipation sections on the heat sink, further enhancing heat dissipation efficiency. Attached Figure Description

[0017] The above and other objects, features, and advantages of exemplary embodiments of this disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0018] Figure 1 An exploded schematic diagram of the battery box according to an embodiment of this disclosure is shown;

[0019] Figure 2 A schematic diagram of the heat dissipation shell of the battery box according to an embodiment of this disclosure is shown;

[0020] Figure 3 A schematic diagram of the transition plate and busbar of the battery box according to an embodiment of this disclosure is shown.

[0021] In the diagram: 100, battery box; 200, battery module; 300, heat sink.

[0022] 201. Battery cell; 202. First transition plate; 203. First end plate; 204. Second transition plate; 205. Second end plate; 206. Busbar; 207. Main protective cover; 208. End protective cover; 209. Clearance section; 210. Bending section; 212. Connecting section; 213. Joint section;

[0023] 301. Adhesive area; 302. Fixing area; 303. Heat dissipation teeth; 304. Annular groove. Detailed Implementation

[0024] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0025] It should be understood that the terms “comprising” and “including” used in this disclosure and claims indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0026] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0027] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0028] The specific embodiments disclosed herein will now be described in detail with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 2As shown, this disclosure provides a battery box 100, which includes a battery module 200 and a heat sink 300. The battery module 200 includes a busbar 206 disposed on one side. The heat sink 300 is disposed on the side of the battery module 200 adjacent to and / or opposite to the busbar 206. The heat sink 300 has an inner surface facing the battery module 200. The heat sink 300 includes an adhesive area 301 and a fixing area 302. An annular groove 304 is recessed on the inner surface of the heat sink 300. The area enclosed by the annular groove 304 forms the adhesive area 301. The adhesive area 301 is adhered to the battery module by thermally conductive adhesive. The fixing area 302 is located outside the annular groove 304 and surrounds the adhesive area 301. The fixing area 302 enables the heat sink 300 and the battery module 200 to be detachably connected by fasteners.

[0030] In some embodiments, the battery box 100 includes a battery module 200 and a detachable heat sink 300 fixed to the outside of the battery module 200. Specifically, the battery module 200 includes battery cells 201 and a busbar 206 disposed above the battery cells 201, and the heat sink 300 is mounted on any one or more surfaces of the battery module 200, excluding the busbar 206. More specifically, the heat sink 300 includes an adhesive area 301 and a fixing area 302. Figure 2 As shown, the inner surface of the heat sink 300 has a recessed annular groove 304 in the middle region. The area enclosed by the annular groove 304 forms an adhesive area 301, and the area outside the annular groove 304 forms a fixing area 302. That is, the adhesive area 301 is located in the middle region of the inner surface of the heat sink 300, and the fixing area 302 is located on the outer periphery of the adhesive area 301. The fixing area 302 has a through hole that penetrates the heat sink 300, and fasteners can pass through the through hole to fix or separate the heat sink 300 and the battery module 200.

[0031] During installation, after applying thermally conductive adhesive to the adhesive area 301 of the heat sink 300 or to the outer surface of the battery module 200 which is opposite to the adhesive area 301, the heat sink 300 is attached to the battery module 200. Then, fasteners are used to pass through the through holes to further fix the heat sink 300 to the battery module 200.

[0032] In the above scheme, in order to facilitate the removal of the heat sink 300 from the battery module 200, the fastener can be a stud with external threads, and the mounting position on the battery module 200 can be set as a mounting hole with internal threads, with the stud threaded to the mounting hole.

[0033] The battery box 100 disclosed herein is assembled by detachably connecting the heat sink 300 and the battery module 200. This allows thermally conductive adhesive to be evenly applied to the inner surface of the heat sink 300 or the outer surface of the battery module 200 before the heat sink 300 and the battery module 200 are fixed together with fasteners. This arrangement allows for more even application of the thermally conductive adhesive, resulting in more uniform heat dissipation from the battery and improving its lifespan.

[0034] Those skilled in the art will understand that the application method of thermally conductive adhesive is not limited to the two mentioned above, namely, applying it only to the heat sink 300 or only to the battery module 200, or applying it to both the heat sink 300 and the heat sink module before pasting.

[0035] In some embodiments, the heat dissipation shell 300 includes at least two side heat dissipation shells, which are respectively disposed on the side of the battery module 200 adjacent to the busbar 206 and symmetrically disposed on two opposite side surfaces of the battery module 200.

[0036] In a specific embodiment, such as Figure 1 As shown, the battery box 100 has a square structure, and a similarly square battery module 200 is also disposed inside it. The battery module 200 includes an upper surface on which a busbar 206 is mounted, a lower surface opposite to the upper surface, a first end face and a second end face arranged symmetrically along the length of the battery module 200 and perpendicular to the upper surface, and a left side surface and a right side surface arranged symmetrically perpendicular to the upper surface.

[0037] In this design, the battery module 200 includes a battery cell 201 and a busbar 206 disposed on the upper surface of the battery cell 201. Considering electrical safety and insulation issues, no heat sink 300 is disposed above the busbar 206. Side heat sinks are disposed on the left and right surfaces of the battery module 200, respectively.

[0038] The disclosed solution, by placing the heat sink 300 on two opposing side surfaces of the battery module 200, can more effectively utilize air convection to accelerate the transfer of heat from the heat source to the surrounding environment, thereby improving the overall heat dissipation efficiency.

[0039] Those skilled in the art will understand that in other embodiments, side heat sinks may not be provided on the left and right surfaces of the battery module, but may be provided on both the first and second end surfaces of the battery module 200, or side heat sinks may be installed on all four sides perpendicular to the busbar 206, all of which fall within the protection scope of this solution.

[0040] In some embodiments, the heat sink 300 further includes a bottom heat sink, which is disposed on the side of the battery module 200 opposite to the busbar 206; the battery box 100 further includes a protective cover, which is disposed on the outside of the battery module 200 and detachably connected to the heat sink 300.

[0041] In a specific implementation plan, such as Figure 1 As shown, the heat dissipation housing 300 also includes a bottom heat dissipation housing. That is, in order to further improve heat dissipation efficiency, a bottom heat dissipation housing can also be installed on the lower surface of the side of the battery module 200 opposite to the busbar 206. In addition, the battery box 100 in this solution also includes a protective cover, which is located on the outside of the battery module 200 and is detachably connected to the heat dissipation housing 300.

[0042] In some embodiments, the protective cover includes a main protective cover 207 and an end protective cover 208. The main protective cover 207 is disposed on the outside of the busbar 206, and the end protective cover 208 is disposed on the side of the battery module 200 adjacent to the busbar 206. The main protective cover 207 and the end protective cover 208 are detachably connected to the heat sink 300.

[0043] In one specific implementation, the protective cover includes a main protective cover 207 and two end protective covers 208. Specifically, the main protective cover 207 is positioned above the busbar 206 of the battery module 200. The two end protective covers 208 are respectively positioned on the first and second end faces of the battery module. A bottom heat sink is installed on the lower surface of the side of the battery module opposite to the busbar 206, and side heat sinks are respectively provided on the left and right surfaces of the battery module. In summary, in this solution, protective covers are provided on the upper side and both end faces in the length direction of the battery module, and heat sinks 300 are provided on the lower side and both end faces in the width direction of the battery module.

[0044] Those skilled in the art will understand that, in other embodiments, protective covers may also be provided on the upper side of the battery module and on both end faces (i.e., the left and right surfaces) in the width direction, and heat dissipation shells 300 may be provided on the lower side of the battery module and on both end faces (i.e., the first and second end faces) in the length direction. Alternatively, only one end protective cover 208 may be provided, which may be provided on any battery module adjacent to the busbar.

[0045] It is worth noting that in the disclosed solution, both the main protective cover 207 and the end protective covers 208 are plate-shaped structures. For ease of installation, the two end protective covers 208 and the main protective cover 207 can be assembled in advance and installed as a whole. Alternatively, the main protective cover 207 and the end protective covers 208 can be set up independently. Or, the main protective cover 207 and the two end protective covers 208 can be a single U-shaped piece.

[0046] In some embodiments, the battery box 100 may further include a plurality of battery modules 200 arranged along its length or width direction, wherein the length direction and the width direction are both perpendicular to the upper surface; the battery module 200 is provided with side protective covers at both ends of its extended length direction or at both ends of its extended width direction; the heat dissipation shell 300 is disposed on two side surfaces on which the side protective covers are not provided.

[0047] As is well known, some products with high power demand, such as electric vehicles, typically have several battery modules 200 installed in the battery box 100. Since a busbar 206 is installed above the battery modules 200, after the battery modules 200 are arranged and electrically connected, the surface where the busbar 206 is located is the upper surface, and the battery modules 200 can be arranged along the length or width of the upper surface.

[0048] In one specific embodiment, a plurality of battery modules 200 are arranged extending along the length of the upper surface. An upper protective cover is installed on the busbar 206 above the plurality of battery modules 200, and side protective covers are respectively provided on the first end face and the second end face. A heat sink 300 is installed on the lower surface, the left side surface and the right side surface.

[0049] In another specific embodiment, a plurality of battery modules 200 are arranged extending along the width direction of the upper surface. An upper protective cover is installed on the busbar 206 above the plurality of battery modules 200, and side protective covers are installed on the left and right surfaces. Heat dissipation shells 300 are respectively provided on the lower surface, the first end face, and the second end face.

[0050] Those skilled in the art will understand that when several battery modules 200 are arranged along the length of the upper surface, the first and last battery modules 200 have only one end face in contact with the outside, while the two end faces of the middle battery modules 200 are in contact with other battery modules 200 along their length. To ensure that the heat dissipation of each battery module 200 is maintained within a preset range, end protective covers 208 are respectively provided on the first end face of the first battery module 200 and the second end face of the last battery module 200. This allows all battery modules 200 to be covered by the end protective covers 208 and the heat dissipation shell 300 on both end faces along their length, thereby making the heat dissipation of each module in the battery box 100 more uniform.

[0051] Similarly, when several battery modules 200 are arranged along the width of the upper surface, the left surface of the leftmost battery module 200 and the right surface of the rightmost battery module 200 are in contact with the outside, and the left and right surfaces of any battery module 200 in between are in contact with the adjacent battery module 200. Therefore, in order to maintain the uniformity of heat dissipation of each battery module 200 in the battery box 100, an end protection cover 208 is installed on the left surface of the leftmost battery module 200, and an end protection cover 208 is also installed on the right surface of the rightmost battery module 200.

[0052] In one specific implementation, the protective cover has a connecting part 212, and the protective cover is detachably connected to the heat dissipation shell 300 through the connecting part 212. The end protective cover 208 includes two oppositely arranged, and the two end protective covers 208 are respectively connected to the main protective cover 207.

[0053] See Figure 1 In this design, the protective cover includes a main protective cover 207 and two end protective covers 208. The main protective cover 207 is connected to the end protective covers at both ends along its length, and each end of its width is provided with a connecting portion 212. This connecting portion 212 is perpendicular to the outer surface of the main protective cover 207 and extends towards the lower surface of the battery module. Each of the two end protective covers 208 also has two connecting portions 212, and the two connecting portions 212 on the same side of the main protective cover 207 are positioned opposite each other along the length of the battery module 200. In this design, the connecting portions 212 on the protective cover and the fixing area on the heat sink 300 are positioned opposite each other along the width of the battery module 200, and the connecting portions 212 have several connecting holes. During installation, fasteners pass sequentially through the mounting holes on the fixing area and the connecting holes on the connecting portions 212 to secure them together.

[0054] In some embodiments, the battery box 100 further includes a transition plate disposed between the battery module 200 and the heat dissipation shell 300. The thermally conductive adhesive is coated between the transition plate and the bonding area 301 so that the bonding area 301 of the heat dissipation shell 300 is bonded and fixed to the outer surface of the transition plate.

[0055] In the above scheme, the battery module 200 also includes a transition plate that is attached to the outer periphery of the cell 201 by thermally conductive adhesive, and the heat sink 300 is connected to the battery module 200 by attaching its inner side to the outer side of the transition plate.

[0056] like Figure 2 As shown, when the battery module 200 is equipped with a main protective cover 207, two end protective covers 208 and three heat sinks 300 (the specific settings have been described in detail above), the fixing area 302 of the heat sink 300 is connected to the transition plate in addition to being connected to the other heat sinks 300, the main protective cover 207 and the end protective covers 208.

[0057] Specifically, such as Figure 1 As shown, the battery module 200 has two transition plates arranged opposite each other in the width direction, namely the first transition plate 202 and the second transition plate 204. During installation, thermally conductive adhesive is applied to the outer surface of the transition plate, and then the adhesive area 301 of the heat sink 300 is aligned with the adhesive area of ​​the transition plate and pasted on. Then, the fixing area 302 of the side heat sink is fixedly connected to the bottom heat sink, the main protective cover 207 and the end protective cover 208 by fasteners.

[0058] Those skilled in the art will understand that the number of transition plates is the same as the number of side heat sinks. For example, when the battery module 200 has side heat sinks on all four sidewall surfaces perpendicular to the busbar, four transition plates are also provided.

[0059] In one specific implementation, since the main protective cover 207, the end protective cover 208, and the heat sink 300 are disposed on the outer periphery of the battery module 200, their area is larger than the area of ​​the corresponding side surface of the battery module 200. In order to ensure that there is no gap between the heat sink 300 and the battery module 200, the adhesive area 301 is set to protrude from the fixing area 302 so as to be adhered to the transition plate. The fixing area 302 is connected to the fixing areas 302 of other heat sinks 300, as well as the main protective cover 207 and the end protective cover 208.

[0060] Furthermore, those skilled in the art will understand that the application of thermally conductive adhesive is not limited to its basic fixing function; it also provides an additional sealing effect. Specifically, in this solution, the thermally conductive adhesive is applied to the transition plate, and its thickness can be adjusted according to specific design requirements. Once the fixing area 302 of the heat sink 300 is correctly installed, the thermally conductive adhesive not only ensures that the heat sink 300 adheres stably to the transition plate but also forms a sealed environment between them. This helps prevent the intrusion of dust, moisture, or other external substances, thereby protecting the internal components of the battery module 200. This sealing effect is crucial for improving the reliability and durability of the battery module 200.

[0061] In one specific implementation, the battery module 200 includes two end plates arranged opposite to each other, the two end plates being located inside the two end protective covers 208 respectively, and the heat dissipation shell 300 being detachably connected to the end plates respectively.

[0062] In this plan, such as Figure 3 As shown, the battery module 200 also includes two end plates arranged opposite to each other, namely the first end plate 203 and the second end plate 205. The two end plates can be assembled with the battery module using thermally conductive adhesive and then fixed to the bottom heat sink shell by threaded fastening. Alternatively, the end plates can be glued to the battery cells on their inner surfaces using thermally conductive adhesive, and glued to the two end protective covers on their outer surfaces using thermally conductive adhesive. Furthermore, the end plates in this design have through holes, through which fasteners can detachably connect the heat sink shell 300 and the end plates. That is, the heat sink shell 300 in this design has a ring of through holes in the fixing area 302 that connects to the connecting portion 212 on the protective cover. Further, several through holes connecting to the end plates are also provided within the ring of through holes in the fixing area 302. This allows the heat sink shell 300 to be connected to both the protective cover and the end plates.

[0063] like Figure 3 As shown, in a specific embodiment, the end of the transition plate is provided with a bending portion 210, and the bending portion 210 is detachably connected to the end plate by fasteners; the end of the end plate is provided with a clearance portion 209, the clearance portion 209 accommodates part of the end plate and provides connection space for at least one fastener, so that the fixing area 302 abuts against the end plate and is detachably connected by the fasteners.

[0064] In this solution, the transition plate includes a first transition plate 202 and a second transition plate 204 extending along the length direction of the battery module 200 on the left and right surfaces, respectively. The end plate includes a first end plate 203 and a second end plate 205 extending along the width direction of the battery module 200 on the first and second end faces, respectively. The height of the two end plates is greater than the height of the two transition plates in the length direction.

[0065] Specifically, both ends of the transition plate along its length are provided with a bending portion 210 and a clearance portion 209. The bending portion 210 is located in the middle region along the width of the transition plate, and the clearance portion 209 is a notch located at both ends of the bending portion 210. This arrangement allows the bending portion 210 on the transition plate to be detachably connected to the end plate via a connector. Simultaneously, the clearance portion 209 functions to accommodate part of the end plate and provide connection space for at least one fastener connecting the end plate to the heat sink 300, allowing the fixing area 302 on the heat sink 300 to be detachably connected to the end plate via a fastener. Furthermore, each end plate in this design is provided with a connecting portion 213, which corresponds to the clearance portion 209 and is used to connect with the fixing area 302.

[0066] More specifically, the bent portion 210 on the first transition plate 202 is perpendicularly connected to the first transition plate 202 and extends toward the second transition plate 204, and the bent portion 210 on the second transition plate 204 is perpendicularly connected to the second transition plate 204 and extends toward the first transition plate 202. The joining portion 213 on the first end plate 203 is connected to the first end plate 203 and extends perpendicularly away from the second end plate 205, and the joining portion 213 on the second end plate 205 is connected to the second end plate 205 and extends perpendicularly away from the first end plate 203.

[0067] It is worth noting that in the above scheme, the connectors used to connect the bent portion 210 to the end plate and the fasteners used to fix the heat sink 300 to the end plate can both be bolts. Of course, this is not the only option. In other implementations, the connectors and fasteners can adopt different structures to adapt to specific design requirements and functional needs. These alternative structures may include, but are not limited to, pins, clips, or other types of mechanical fasteners, which can be selected according to the specific application scenario and engineering requirements.

[0068] Those skilled in the art will understand that, in other embodiments, the clearance portion 209 and the bending portion 210 may both be disposed on the first end plate 203 and the second end plate 205, or the clearance portion 209 may be disposed on the first transition plate 202 and the second transition plate 204, and the bending portion 210 may be disposed on the first end plate 203 and the second end plate 205.

[0069] In one specific implementation, the heat dissipation shell 300 also has an outer surface facing away from the battery module 200, and a plurality of spaced heat dissipation teeth 303 are protruding from the outer surface, the heat dissipation teeth 303 extending along the length or width direction of the heat dissipation shell 300.

[0070] In this design, the surface of the heat sink 300 with the adhesive area 301 is the inner surface, and the surface opposite the inner surface is the outer surface. A protruding heat dissipation portion is provided on the outer surface. Because the heat dissipation portion protrudes from the outer surface, the heat dissipation area of ​​the outer surface is increased, thus improving the heat dissipation effect of the battery box 100.

[0071] Specifically, such as Figure 1 and Figure 2 As shown, in this design, the heat dissipation section is composed of multiple spaced-apart heat dissipation teeth 303, which are arranged along the length of the heat dissipation shell 300. Each heat dissipation tooth 303 is a plate-like structure with a preset height and covers the outer surface of the heat dissipation shell 300. These heat dissipation teeth 303 are designed with a preset protrusion height, which increases the heat dissipation area of ​​the heat dissipation shell 300, thereby improving the overall heat dissipation performance of the battery box 100. It is worth noting that the preset height in this design refers to the dimension of the heat dissipation tooth 303 extending vertically outward from the heat dissipation plate.

[0072] Those skilled in the art will understand that the heat dissipation fin 303 can also extend along the width direction of the heat dissipation shell 300. That is, the extension direction of the heat dissipation fin 303 is not specifically limited in this design. Furthermore, the extension of the heat dissipation fin 303 can also be... Figure 1 The fins shown can be arranged horizontally or vertically, or they can be arranged in a smooth curve on the heat sink 300. In other words, the arrangement of the heat sink fins 303 is not limited in this disclosed solution.

[0073] The battery box 100 design disclosed herein not only optimizes the application of thermally conductive adhesive between the heat sink 300 and the battery module 200, ensuring more uniform heat dissipation inside the battery box 100, but also further enhances the heat dissipation capacity of the battery box 100 by integrating heat dissipation components on the heat sink 300. Therefore, this design gives the battery box 100 superior heat dissipation performance and extends its service life.

[0074] In some embodiments, a vehicle is also provided, wherein the vehicle includes the battery box 100 described above.

[0075] The vehicle in the above solution is an electric vehicle, and the battery box 100 provided in this solution is used in the electric vehicle. Due to the heat dissipation design of the battery box 100 in this solution, the heat dissipation of the battery box 100 is uniform, avoiding thermal runaway of the battery box 100 that could lead to fire or explosion and other safety accidents, thus ensuring the safety of the vehicle.

[0076] While numerous embodiments of this disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of this disclosure. It should be understood that various alternatives to the embodiments of this disclosure described herein may be employed in the practice of this disclosure. The appended claims are intended to define the scope of this disclosure and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A battery box (100), characterized in that, The device includes a battery module (200) and a heat sink (300). The battery module (200) includes a busbar (206) disposed on one side. The heat sink (300) is disposed on the side of the battery module (200) adjacent to and / or opposite to the busbar (206). The heat sink (300) has an inner surface facing the battery module (200). The heat sink (300) includes an adhesive area (301) and a fixing area (302). The inner surface of the heat sink (300) is recessed with an annular groove (304). The area enclosed by the annular groove (304) forms the adhesive area (301). The adhesive area (301) is bonded to the battery module (200) by thermally conductive adhesive. The fixing area (302) is located outside the annular groove (304) and surrounds the adhesive area (301). The fixing area (302) allows the heat sink (300) and the battery module (200) to be detachably connected by multiple fasteners.

2. The battery box (100) according to claim 1, characterized in that, The heat dissipation shell (300) includes at least two side heat dissipation shells, which are respectively disposed on the side of the battery module (200) adjacent to the busbar (206) and symmetrically disposed on two opposite side surfaces of the battery module (200).

3. The battery box (100) according to claim 2, characterized in that, The heat dissipation housing (300) also includes a bottom heat dissipation housing, which is disposed on the side of the battery module (200) opposite to the busbar (206); The battery box (100) also includes a protective cover, which is located on the outside of the battery module (200) and is detachably connected to the heat dissipation shell (300).

4. The battery box (100) according to claim 3, characterized in that, The protective cover includes a main protective cover (207) and an end protective cover (208). The main protective cover (207) is located on the outside of the busbar (206), and the end protective cover (208) is located on the side of the battery module (200) adjacent to the busbar (206). The main protective cover (207) and the end protective cover (208) are detachably connected to the heat sink (300).

5. The battery box (100) according to claim 4, characterized in that, The protective cover has a connecting part (212), and the protective cover is detachably connected to the heat dissipation shell (300) through the connecting part (212); The end protection cover (208) includes two that are arranged opposite to each other, and the two end protection covers (208) are respectively connected to the main protection cover (207).

6. The battery box according to claim 5, characterized in that, The battery module (200) includes two end plates arranged opposite to each other. The two end plates are located inside the two end protective covers (208), and the heat dissipation shell (300) is detachably connected to the end plates.

7. The battery box (100) according to claim 6, characterized in that, The battery box (100) also includes a transition plate, which is disposed between the battery module (200) and the heat sink (300). The thermally conductive adhesive is coated between the transition plate and the adhesive area (301) so that the adhesive area (301) of the heat sink (300) is bonded and fixed to the outer surface of the transition plate.

8. The battery box (100) according to claim 7, characterized in that, The end of the transition plate is provided with a bending part (210) and a clearance part (209), and the bending part (210) is detachably connected to the end plate through a connector; The clearance portion (209) accommodates part of the end plate and provides connection space for at least one of the fasteners, such that the fixing area (302) abuts against the end plate and is detachably connected by the fasteners.

9. The battery box (100) according to any one of claims 1-8, characterized in that, The heat sink (300) also has an outer surface facing away from the battery module (200), and a plurality of spaced heat dissipation teeth (303) are protruding from the outer surface. The heat dissipation teeth (303) extend along the length or width of the heat sink (300).

10. A vehicle, characterized in that, It includes the battery box (100) according to any one of claims 1-9.

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