Box body for battery pack

Abstract

The utility model belongs to the field of batteries, and discloses a box body for a battery pack, the box body comprises a first side wall and a second side wall which are oppositely arranged along a first direction, and a first end wall and a second end wall which are oppositely arranged along a second direction, and the first direction and the second direction are intersected; bottom walls are arranged at the bottom ends of the first side wall, the second side wall, the first end wall and the second end wall; the first side wall, the second side wall, the first end wall, the second end wall and the bottom wall define a hollow cavity with an opening in the top. The box body can improve the installation convenience of battery modules, electrical parts and the like in the battery pack, and the box body is high in overall strength and good in heat dissipation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a battery pack housing. Background Technology

[0002] In the existing technology, the battery pack housing of two-wheeled vehicles is generally made of aluminum alloy profile through one-piece extrusion molding. The formed housing has a tubular structure and the opening of the housing is on the side, which makes it difficult to install the battery modules, electrical components and accessories inside the battery pack. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a battery pack housing that can at least solve the problem of difficulty in installing battery modules, electrical components and accessories inside the battery pack within the housing.

[0004] A first aspect of this utility model provides a battery pack housing, comprising:

[0005] A first sidewall and a second sidewall are arranged opposite each other along a first direction, and a first endwall and a second endwall are arranged opposite each other along a second direction, wherein the first direction and the second direction intersect; a bottom wall is provided at the bottom end of the first sidewall, the second sidewall, the first endwall and the second endwall;

[0006] The first sidewall, the second sidewall, the first endwall, the second endwall, and the bottom wall together form a hollow cavity with an opening at the top;

[0007] Both the first end wall and the second end wall include a heat-conducting end plate, and the side of the heat-conducting end plate away from the hollow cavity is provided with multiple first reinforcing ribs;

[0008] Each of the first reinforcing ribs extends along the first direction and is disposed on the heat-conducting end plate, and each of the first reinforcing ribs is spaced apart along a third direction on the heat-conducting end plate, the third direction being perpendicular to the plane formed by the intersection of the first direction and the second direction.

[0009] The battery pack housing provided by this utility model has a simple structure and can improve the ease of installation of battery modules, electrical components and accessories inside the battery pack.

[0010] Preferably, the first sidewall, the first endwall, the second sidewall, and the second endwall are sequentially welded and fixedly connected; the bottom ends of the first sidewall, the second sidewall, the first endwall, and the second endwall are respectively welded and fixedly connected to the bottom wall.

[0011] Preferably, the upper ends of the first sidewall and the second sidewall are each provided with a first groove, and the upper ends of the second endwall and the second endwall are each provided with a second groove; each of the first grooves and each of the second grooves encloses a square assembly groove, and a sealing element is assembled in the square assembly groove.

[0012] Preferably, the upper end of the first sidewall or / the second sidewall is provided with arc-shaped clearance grooves that communicate with the first groove on both sides along the second direction;

[0013] or / and,

[0014] The upper ends of the first end wall and / or the second end wall are provided with arc-shaped clearance grooves that communicate with the second groove on both sides along the first direction.

[0015] Preferably, a first cavity is provided on the upper end of the heat-conducting end plate near the hollow cavity, and the upper end surface of the first cavity cooperates with the heat-conducting end plate to form the second groove;

[0016] or / and,

[0017] A second cavity is provided on the lower end of the heat-conducting end plate on the side away from the hollow cavity.

[0018] Preferably, the second cavity has a lug on the side away from the hollow cavity, and the lug is used to fix the drive device.

[0019] Preferably, both the first sidewall and the second sidewall include a sidewall plate, and the sidewall plate has a third cavity inside; the first groove is formed at the upper end of the sidewall.

[0020] Preferably, a lifting lug is provided at the lower end of the side wall panel away from the hollow cavity, and a through mounting hole is provided on the lifting lug, and a protective bushing is fitted in the mounting hole.

[0021] Preferably, the protective bushing includes a mounting post, one end of which is provided with a limiting baffle, and a through hole is formed in both the mounting post and the limiting baffle, and a locking element is assembled in the through hole;

[0022] The mounting column is in the state of being assembled into the mounting hole, and the limiting baffle and the locking member abut against the inner and outer sides of the lifting lug, respectively.

[0023] Preferably, the bottom wall includes a bottom plate, and a plurality of second reinforcing ribs are provided on the side of the bottom plate away from the hollow cavity. Each second reinforcing rib extends along the second direction and is spaced apart on the bottom plate along the first direction.

[0024] Preferably, the upper ends of the first sidewall, the second sidewall, the first endwall, and the second endwall are all provided with screw holes, and threaded sleeves are fitted into the screw holes, and bolts are fitted into the threaded sleeves.

[0025] A second aspect of this utility model is to provide a battery pack, the battery pack including the battery pack housing described in any embodiment of this application.

[0026] A third aspect of this utility model provides an electrical device, which includes a battery pack housing as described in any embodiment of this application, or includes a battery pack as described in any embodiment of this application.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0029] Figure 1 This is a top view of the battery pack housing provided in an embodiment of this application;

[0030] Figure 2 This is a perspective structural diagram of the battery pack housing provided in an embodiment of this application;

[0031] Figure 3 A first-view structural diagram of the first sidewall provided in an embodiment of this application;

[0032] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0033] Figure 5 A second-view structural diagram of the first sidewall provided in an embodiment of this application;

[0034] Figure 6 A structural diagram of the protective bushing provided in an embodiment of this application;

[0035] Figure 7 A perspective view of the first end wall provided in an embodiment of this application;

[0036] Figure 8 for Figure 7 Enlarged view of a section at point B in the middle;

[0037] Figure 9 A diagram showing the connection between the lug and the second cavity provided in an embodiment of this application;

[0038] Figure 10A bottom wall structure diagram provided for an embodiment of this application;

[0039] Figure 11 A structural diagram of the sealing element provided in the embodiments of this application;

[0040] Figure 12 This is a perspective view of the battery pack provided in an embodiment of this application;

[0041] Figure 13 A perspective view of the battery pack (cover and second sidewall not shown) provided in the embodiments of this application.

[0042] In the above image:

[0043] 100 enclosure;

[0044] 110 First sidewall; 111 Sidewall plate; 1110 Third cavity; 1111 First groove; 1112 Arc-shaped clearance groove; 1113 Lifting lug; 1114 Screw hole; 1115 Threaded hole; 1116 Mounting hole;

[0045] 120 Second sidewall;

[0046] 130 First end wall; 131 Heat-conducting end plate; 1310 Second groove; 1311 First reinforcing rib; 1312 First cavity; 1313 Second cavity; 1314 Lug;

[0047] 140 Second end wall;

[0048] 150 Bottom wall; 151 Bottom plate; 1511 Second reinforcing rib;

[0049] 160 Seals;

[0050] 170 Protective bushing; 171 Mounting post; 1711 Through hole; 172 Limiting baffle;

[0051] 200 Battery pack; 210 Battery module; 220 Electrical components; 230 Cover. Detailed Implementation

[0052] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0053] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0054] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0055] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open and encompassing, that is, "including, but not limited to".

[0056] In the description of this specification, the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0057] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0058] Existing battery pack enclosures are generally made of aluminum alloy profiles through one-piece extrusion molding, resulting in a tubular structure. The opening of the enclosure is on the side, making it difficult to install the battery modules, electrical components, and accessories inside the enclosure. Furthermore, due to the enclosure's dimensional limitations and narrow side walls, it is impossible to use riveting or press-fitting methods for sealing, leading to difficulties in sealing the battery pack.

[0059] To solve the above technical problems, such as Figures 1 to 10 As shown, in a first aspect, this utility model provides a battery pack housing 100, comprising:

[0060] A first sidewall 110 and a second sidewall 120 are arranged opposite each other along a first direction, and a first endwall 130 and a second endwall 140 are arranged opposite each other along a second direction, wherein the first direction and the second direction intersect; a bottom wall 150 is provided at the bottom end of the first sidewall 110, the second sidewall 120, the first endwall 130 and the second endwall 140.

[0061] The first sidewall 110, the second sidewall 120, the first endwall 130, the second endwall 140, and the bottom wall 150 enclose a hollow cavity with an opening at the top;

[0062] Both the first end wall 130 and the second end wall 140 include a heat-conducting end plate 131, and the heat-conducting end plate 131 is provided with multiple first reinforcing ribs 1311 on the side away from the hollow cavity;

[0063] Each of the first reinforcing ribs 1311 extends along the first direction and is disposed on the heat-conducting end plate 131, and each of the first reinforcing ribs 1311 is spaced apart along a third direction on the heat-conducting end plate 131, the third direction being perpendicular to the plane formed by the intersection of the first direction and the second direction.

[0064] Specifically, the first side wall 110, the first end wall 130, the second side wall 120, and the second end wall 140 are sequentially connected and, together with the low-end component, form a hollow cavity with an opening at the top. This provides ample installation space for the battery module 210, electrical components 220, and accessories within the battery pack 200, allowing them to be directly inserted into the housing 100 through the top opening, facilitating installation and operation. The first direction is... Figure 1 The x-direction in the middle, the second direction is Figure 1 In the y-direction, the third direction is Figure 12 The z-direction. For example, the width of the enclosure along the first direction is 360mm, the length along the second direction is 670mm, and the height along the third direction is 190.5mm. The above enclosure dimensions are for illustrative purposes only, and other dimensions may be used in actual applications.

[0065] The first side wall 110, the first end wall 130, the second side wall 120, the second end wall 140, and the bottom wall 150 of the housing 100 can be made of metal, such as aluminum alloy or steel. The first direction and the second direction are arranged to intersect, preferably perpendicularly, to form a square housing 100, which is suitable for assembling a square battery pack 200.

[0066] The heat-conducting plate is made of metal, such as aluminum alloy profile. The aluminum alloy profile is extruded to form the first reinforcing rib 1311, which can reduce the weight of the heat-conducting end plate 131, increase its rigidity, reduce welding deformation, and the first reinforcing rib 1311 on the heat-conducting end plate 131 can increase its surface area, thereby improving the heat dissipation efficiency of the battery pack 200.

[0067] The arrangement of multiple first reinforcing ribs 1311 can enhance the overall rigidity of the heat-conducting end plate 131, increase its surface area, improve the heat dissipation efficiency of the battery pack 200, and make high utilization of the sidewalls of the heat-conducting end plate 131. Among them, the third direction is perpendicular to the first direction and the second direction.

[0068] The battery pack housing 100 provided by this utility model has a simple structure, which can improve the ease of installation of battery modules 210, electrical components 220 and accessories in the battery pack 200, and the housing 100 has high overall strength and good heat dissipation efficiency.

[0069] In some embodiments, the first sidewall 110, the first endwall 130, the second sidewall 120, and the second endwall 140 are sequentially welded and fixedly connected; the bottom ends of the first sidewall 110, the second sidewall 120, the first endwall 130, and the second endwall 140 are respectively welded and fixedly connected to the bottom wall 150. In this example, welding is used to assemble the box 100, which facilitates the assembly of the box 100 and can enhance the rigidity of the box 100.

[0070] In some embodiments, the first sidewall 110 and the second sidewall 120 have the same cross-sectional area, the first endwall 130 and the second endwall 140 have the same cross-sectional area, and the cross-sectional area of ​​the first sidewall 110 is greater than the cross-sectional area of ​​the first endwall 130.

[0071] In this example, the hollow cavity formed by the first sidewall 110, the second sidewall 120, the first endwall 130, the second endwall 140, and the bottom wall 150 is rectangular in shape, and the opening is relatively large, which is conducive to the installation of the battery module 210, electrical components 220, and accessories inside the battery pack 200.

[0072] In some implementations, such as Figure 1 , Figure 2 and Figure 11 As shown, the upper ends of the first sidewall 110 and the second sidewall 120 are each provided with a first groove 1111, and the upper ends of the second endwall 140 and the second endwall 140 are each provided with a second groove 1310; each of the first grooves 1111 and each of the second grooves 1310 encloses a square assembly groove, and a sealing element 160 is assembled in the square assembly groove.

[0073] Specifically, the square mounting grooves formed at the upper ends of the first sidewall 110, the second sidewall 120, the first endwall 130, and the second endwall 140 can be used to assemble the sealing element 160. The sealing element 160 can be a rubber gasket, etc., so that the cover 230 of the battery pack 200 can be sealed to the housing 100 through the sealing element 160. In this example, the first groove 1111 and the second groove 1310 can be formed by extruding aluminum alloy profiles, which is simple and can solve the problem of sealing the housing 100.

[0074] In some implementations, such as Figure 3 and Figure 4 As shown, the upper end of the first sidewall 110 or / the second sidewall 120 is provided with arc-shaped clearance grooves 1112 that communicate with the first groove 1111 on both sides along the second direction.

[0075] or / and,

[0076] The upper ends of the first end wall 130 and / or the second end wall 140 are provided with arc-shaped clearance grooves 1112 that communicate with the second groove 1310 on both sides along the first direction.

[0077] Specifically, after compression, the seal 160 is installed in the square assembly groove formed by the first groove 1111 and the second groove 1310. The arc-shaped clearance groove 1112 is set to provide an expansion position after the seal 160 is compressed, ensuring that the seal 160 and the square assembly groove can be assembled more tightly, further improving the sealing performance of the housing 100 and the cover 230, thereby improving the sealing performance and safety of the battery pack 200.

[0078] In some implementations, such as Figure 7 and Figure 8 As shown, a first cavity 1312 is provided on the upper end of the heat-conducting end plate 131 near the hollow cavity, and the upper end surface of the first cavity 1312 cooperates with the heat-conducting end plate 131 to form the second groove 1310.

[0079] or / and,

[0080] A second cavity 1313 is provided on the lower end of the heat-conducting end plate 131 away from the hollow cavity.

[0081] Specifically, the design of the first cavity 1312 and the second cavity 1313 can improve the compression resistance of the battery pack 200 and reduce the weight of the heat-conducting end plate 131, thus achieving a lightweight design for the battery pack 200. The first cavity 1312 and the second cavity 1313 can be integrally formed with the heat-conducting end plate 131, or they can be fixedly connected by welding or other methods. The upper surface of the first cavity 1312 mates with the heat-conducting end plate 131 to form a second groove 1310. The design of the first cavity 1312 provides sufficient sealing surface for the battery pack 200, ensuring the reliability of the battery pack 200's seal.

[0082] In some implementations, such as Figure 9 As shown, the second cavity 1313 has a lug 1314 on the side away from the hollow cavity, and the lug 1314 is used to fix the drive device.

[0083] Specifically, a second cavity 1313 is provided at the lower end of both the first end wall 130 and the second end wall 140. A lug 1314 is fixed to at least one of the second cavities 1313. The lug 1314 is fixedly connected to the second cavity 1313 by welding. A fixing hole is provided on the lug 1314, and a driving device is fixed to the lug 1314 through the fixing hole. The driving device can be a motor, etc., providing driving force to the electrical equipment corresponding to the battery pack 200. The lug 1314 can be figure-eight shaped. In this example, the second cavity 1313 satisfies the need for lightweighting the heat-conducting end plate 131 while providing sufficient welding surface for the lug 1314 to meet the welding strength requirements of the lug 1314.

[0084] In some implementations, such as Figures 3 to 5 As shown, both the first sidewall 110 and the second sidewall 120 include a sidewall plate 111, and the sidewall plate 111 has a third cavity 1110 inside; the first groove 1111 is formed at the upper end of the sidewall.

[0085] Specifically, the side wall panel 111 is made of metal to improve its rigidity. The side wall panel 111 has a third cavity 1110 that runs through both ends along the second direction. There are multiple third cavities 1110, which are distributed at intervals inside the side wall panel 111. The arrangement of the third cavities 1110 can achieve the weight reduction of the side wall panel 111, provide support for the expansion of the battery module 210, and improve the compression resistance of the battery pack 200.

[0086] It should be noted that the upper part of the side wall plate 111 has multiple threaded holes 1115 of different sizes along the second direction. Some of the threaded holes 1115 have threaded sleeves embedded in them. The threaded sleeves are used to fix the brackets, and the brackets are used to fix the electrical components 220. The remaining threaded holes 1115 do not have threaded sleeves, so that the wire harnesses of the electrical components 220, etc. can be directly fixed to the threaded holes 1115.

[0087] In some implementations, such as Figures 3 to 6 As shown, a lifting lug 1113 is provided at the lower end of the side wall panel 111 away from the hollow cavity. A through mounting hole 1116 is provided on the lifting lug 1113, and a protective bushing 170 is installed in the mounting hole 1116.

[0088] Specifically, the lifting lug 1113 is provided with multiple mounting holes 1116, and a protective bushing 170 is provided inside the mounting holes 1116 to provide mounting points for the electrical equipment corresponding to the battery pack 200. The lifting lug 1113 also has a cavity that runs through both ends along the second direction to achieve the weight reduction of the side wall panel 111.

[0089] In some implementations, such as Figure 6 As shown, the protective bushing 170 includes a mounting post 171, one end of which is provided with a limiting baffle 172. A through hole 1711 is formed in the mounting post 171 and the limiting baffle 172, and a locking element is installed in the through hole 1711.

[0090] The mounting post 171 is in the state of being assembled into the mounting hole 1116, and the limiting baffle 172 and the locking member respectively abut against the inner and outer sides of the lifting lug 1113.

[0091] Specifically, the mounting post 171 is a cylinder, with a limiting baffle 172 welded to one end. The limiting baffle 172 protrudes from the cylinder, and a through hole 1711 is formed inside the cylinder and the limiting baffle 172. The cylinder is mounted on a mounting hole 1116 on a lifting lug 1113, which enhances the strength of the lifting lug 1113 and prevents fasteners from directly pressing against the side wall plate 111 and causing partial crushing of the side wall plate 111. A locking element is installed in the through hole 1711 of the protective bushing 170. With the cooperation of the limiting baffle 172 and the locking element, the cylinder is fixed to the lifting lug 1113. For example, the through hole 1711 is a smooth-walled through hole, and the corresponding locking element is a bolt, which passes through the through hole and is fixed to the frame of the battery pack 200.

[0092] In some implementations, such as Figure 10As shown, the bottom wall 150 includes a bottom plate 151. A plurality of second reinforcing ribs 1511 are provided on the side of the bottom plate 151 away from the hollow cavity. Each second reinforcing rib 1511 extends along the second direction and is spaced apart on the bottom plate 151 along the first direction.

[0093] Specifically, the base plate 151 provides support for the battery module 210 and electrical components 220 inside the battery pack 200. The base plate 151 is made of aluminum alloy profile. The multiple second reinforcing ribs 1511 set on the base plate 151 not only meet the requirements of lightweighting, but also improve the rigidity of the base plate 151 and increase the surface area of ​​the base plate 151, thereby improving the heat dissipation efficiency of the battery pack 200.

[0094] It should be noted that the thickness of the base plate 151 at both ends along the second direction is greater than the thickness of the middle part of the base plate 151, forming a structure that is thinner at both ends and in the middle, which can improve the welding effect of the base plate 151 and reduce welding deformation.

[0095] In some implementations, such as Figure 1 , Figure 3 and Figure 7 As shown, the upper ends of the first sidewall 110, the second sidewall 120, the first endwall 130, and the second endwall 140 are all provided with screw holes 1114, and threaded sleeves are fitted inside the screw holes 1114, and bolts are fitted inside the threaded sleeves.

[0096] Specifically, the upper ends of the first sidewall 110, the second sidewall 120, the first endwall 130, and the second endwall 140 are all provided with multiple screw holes 1114. Threaded sleeves are fixed in the screw holes 1114, and bolts are fitted inside the threaded sleeves to prevent the bolts from failing due to thread failure during repeated disassembly, thus rendering the housing 100 unusable. The bolts pass through the through holes 1711 on the cover 230 and connect to the threaded sleeves, enabling a detachable connection between the housing 100 and the cover 230.

[0097] It is understood that in the embodiments of this application, the first sidewall 110 and the second sidewall 120 have the same specific structure, and the first endwall 130 and the second endwall 140 have the same specific structure. The first endwall 130 and the second endwall 140 may have a lug 1314 for fixing the driving device on one endwall and no lug 1314 on the other.

[0098] The second aspect of this utility model is as follows: Figure 12 and Figure 13 As shown, a battery pack 200 is provided, which includes the battery pack housing 100 described in any embodiment of this application.

[0099] It should be noted that the battery pack 200 provided in this application embodiment also includes conventional components such as battery module 210, electrical components 220, accessories, and cover 230. The battery module 210, electrical components 220, accessories, etc. are assembled in the hollow cavity inside the housing 100, and the cover 230 covers the upper end of the housing 100 and is sealed to the housing 100 and detachably connected.

[0100] The specific technical features and technical effects of the battery pack 200 provided in this application embodiment are the same as those of the housing 100, and will not be repeated in this application embodiment.

[0101] For example, the assembly method of the battery pack 200 provided in this application embodiment is as follows:

[0102] First, weld and fix the lug 1314 to the second cavity 1313 corresponding to the first end wall 130 or the second end wall 140;

[0103] The first end wall 130, the first side wall 110, the second end wall 140 and the second side wall 120 are then welded together to form a frame; then the bottom wall 150 is welded to the frame to form the box 100.

[0104] The battery module 210, electrical components 220, and accessories are installed into the housing 100. The sealing component 160 is assembled into the square assembly formed by the first end wall 130, the first side wall 110, the second end wall 140, and the second side wall 120. Finally, the cover 230 is placed on the housing 100 to seal the cover 230 to the housing 100, thus completing the assembly of the battery pack 200. The resulting battery pack 200 has high overall strength, good sealing performance, and good safety.

[0105] A third aspect of this utility model provides an electrical device, which includes a battery pack housing 100 as described in any embodiment of this application, or a battery pack 200 as described in any embodiment of this application.

[0106] Specifically, the technical features and effects of the electrical equipment are consistent with those of the battery pack housing 100 and the battery pack 200, and will not be repeated in the embodiments of this application.

[0107] It should be noted that electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, range-extended electric vehicles, electric motorcycles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This utility model embodiment does not impose any special limitations on the above-mentioned electrical equipment.

[0108] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A battery pack case (100) characterized by, The utility model relates to a heat dissipation device for LED street lamp, including: first side wall (110) and second side wall (120) are opposite to each first direction, and first end wall (130) and second end wall (140) are opposite to second direction, first direction is with second direction intersection arrangement;The bottom of first side wall (110), second side wall (120), first end wall (130) and second end wall (140) is provided with bottom wall (150); First side wall (110), second side wall (120), first end wall (130), second end wall (140) and bottom wall (150) enclose and form the hollow cavity with the opening in top portion; First end wall (130) and second end wall (140) all include heat conduction end plate (131), and the side of heat conduction end plate (131) away from hollow cavity is provided with a plurality of first reinforcing rib (1311); Each first reinforcing rib (1311) is arranged on heat conduction end plate (131) along first direction, and each first reinforcing rib (1311) is spaced apart on heat conduction end plate (131) along third direction, and third direction is perpendicular to the plane formed by the intersection of first direction and second direction.

2. The battery pack case (100) according to claim 1, characterized by, First side wall (110), first end wall (130), second side wall (120) and second end wall (140) are sequentially welded and fixedly connected;The bottom of first side wall (110), second side wall (120), first end wall (130) and second end wall (140) is respectively welded and fixedly connected with bottom wall (150).

3. The battery pack case (100) according to claim 1, characterized by, The upper end of first side wall (110) and second side wall (120) is provided with first recess (1111), and the upper end of second end wall (140) and second end wall (140) is provided with second recess (1310);Each first recess (1111) and each second recess (1310) enclose and form square assembly groove, and sealing element (160) is assembled in square assembly groove.

4. The battery pack case (100) according to claim 3, characterized by, The upper end of first side wall (110) or / second side wall (120) is provided with arc-shaped avoiding groove (1112) communicated with first recess (1111) on both sides along second direction; Or / and, The upper end of first end wall (130) or / and second end wall (140) is provided with arc-shaped avoiding groove (1112) communicated with second recess (1310) on both sides along first direction.

5. The battery pack case (100) according to claim 3, characterized by, The upper end of heat conduction end plate (131) is provided with first cavity (1312) on the side close to hollow cavity, and the upper end surface of first cavity (1312) cooperates with heat conduction end plate (131) to form second recess (1310); Or / and, The lower end of heat conduction end plate (131) is provided with second cavity (1313) on the side away from hollow cavity.

6. The battery pack case (100) according to claim 3, characterized by The first side wall (110) and the second side wall (120) each comprise a side wall plate (111) internally provided with a third cavity (1110); the first groove (1111) is arranged at the upper end of the side wall.

7. The battery pack case (100) according to claim 6, characterized by The lower end of the side wall plate (111) away from the hollow cavity is provided with an ear (1113), the ear (1113) is provided with a through mounting hole (1116), and the mounting hole (1116) is provided with a protective bushing (170).

8. The battery pack case (100) according to claim 7, characterized by, The protective bushing (170) comprises a mounting column (171), one end of the mounting column (171) is provided with a limiting baffle (172), the mounting column (171) and the limiting baffle (172) are provided with a through hole (1711), and the through hole (1711) is provided with a locking piece; The mounting column (171) is in the state of being assembled in the mounting hole (1116), and the limiting baffle (172) and the locking piece are respectively abutted to the inner and outer sides of the ear (1113).

9. The battery pack case (100) according to claim 1, characterized by, The bottom wall (150) comprises a bottom plate (151), and a plurality of second reinforcing ribs (1511) are arranged on the side of the bottom plate (151) away from the hollow cavity; each second reinforcing rib (1511) is arranged along the second direction, and each second reinforcing rib (1511) is arranged on the bottom plate (151) along the first direction.

10. The battery pack case (100) according to claim 1, characterized by, The upper end of the first side wall (110), the second side wall (120), the first end wall (130) and the second end wall (140) is provided with a threaded hole (1114), the threaded hole (1114) is provided with a threaded sleeve, and the threaded sleeve is provided with a bolt.

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