Battery box and vehicle

Abstract

The embodiment of the utility model discloses a battery box body and a vehicle, the battery box body comprises a lower box body and an upper cover plate, the upper cover plate and the lower box body are detachably connected to define a battery accommodating space, the upper cover plate is provided with a locking support protruding towards the lower box body, and the locking support is provided with a locking groove. A locking base protruding towards the locking support is arranged on the inner bottom wall of the lower box body, and the locking support is suitable for being connected with the locking base in a clamped mode when the upper cover plate covers the lower box body. According to the battery box body disclosed by the embodiment of the utility model, the locking bracket is arranged on the upper cover plate, the locking base is arranged on the inner bottom wall of the lower box body, and the locking bracket is suitable for being connected with the locking base in a clamping manner when the upper cover plate covers the lower box body, so that the upper cover plate is detachably connected with the lower box body, and the battery box body is simple in structure, low in manufacturing cost and high in practicability. And the sealing performance of the battery box body can be ensured, the NVH performance of the battery box body is improved, the use effect is better, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a battery box and a vehicle with the battery box. Background Art

[0002] The battery box of the battery pack is an important component of the battery pack, and its sealing directly affects the safety and performance of the battery pack. As the energy carried by the battery pack increases, the size of the battery box is also getting larger. The upper cover of the battery box is mostly designed as a flat structure. As the size of the battery box increases, the NVH performance of the battery box cannot meet the development requirements. The general solution is to open a hole in the middle of the upper cover and add bolts to fix it. Although this can improve the structural strength and NVH performance, it will affect the sealing of the battery pack, and there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a battery box with a simple structure and low manufacturing cost, which can ensure the sealing of the battery box and improve the NVH performance of the battery box.

[0004] According to the battery box of the embodiment of the utility model, it includes: a lower box and an upper cover plate, the upper cover plate is detachably connected to the lower box to define a battery accommodating space, the upper cover plate is provided with a locking bracket protruding toward the lower box, the inner bottom wall of the lower box is provided with a locking base protruding toward the locking bracket, and the locking bracket is suitable for being clamped and connected with the locking base when the upper cover plate is covered on the lower box.

[0005] According to the battery case of the embodiment of the utility model, a locking bracket is arranged on the upper cover plate, and a locking base is arranged on the inner bottom wall of the lower case body, and the locking bracket is suitable for being connected with the locking base when the upper cover plate is covered on the lower case body, so that the upper cover plate and the lower case body are detachably connected, the structure is simple, the manufacturing cost is low, and the sealing of the battery case body can be ensured, the NVH performance of the battery case body is improved, the use effect is better, and the application range is wider.

[0006] According to the battery box of some embodiments of the present invention, the locking base is provided with two relatively distributed first clamping parts, the locking bracket is provided with a second clamping part, and the two first clamping parts are suitable for being commonly clamped to the second clamping part.

[0007] According to the battery case of some embodiments of the present invention, the first clamping portion has a clamping protrusion, and the two clamping protrusions are relatively distributed, and the second clamping portion has a clamping hole, and the two clamping protrusions are suitable for being clamped into the clamping holes at the same time.

[0008] According to the battery case of some embodiments of the utility model, the first clamping portion is provided with a clamping guide surface and a clamping stop surface, and the second clamping portion is suitable for pushing the two clamping guide surfaces so that the two first clamping portions move in directions away from each other, and after crossing the clamping guide surfaces, the second clamping portion is stopped at the clamping stop surface.

[0009] According to the battery case of some embodiments of the utility model, the second clamping portion has a clamping block, the clamping block is provided with a guide mating surface and a limit mating surface, the guide mating surface is suitable for pushing the clamping guide surface, and the limit mating surface is limitedly mated with the clamping stop surface.

[0010] According to the battery case of some embodiments of the utility model, there are two guide mating surfaces and two limit mating surfaces, which are respectively located on both sides of the clamping block; the two guide mating surfaces respectively cooperate with the two clamping guide surfaces in a one-to-one correspondence, and the two limit mating surfaces respectively cooperate with the two clamping stop surfaces in a one-to-one correspondence.

[0011] According to the battery box of some embodiments of the present invention, the locking base also includes a mounting portion, the two first clamping portions are respectively connected to two sides of the mounting portion, and the mounting portion is connected to the inner bottom wall of the lower box.

[0012] According to the battery box of some embodiments of the present invention, the locking bracket is connected to the upper cover plate by welding or bonding.

[0013] According to the battery box of some embodiments of the present invention, the locking base is located in the middle area of ​​the inner bottom wall of the lower box.

[0014] The utility model also provides a vehicle.

[0015] A vehicle according to an embodiment of the utility model includes a battery pack, and the battery pack is provided with a battery box as described in any one of the above items.

[0016] The vehicle and the above-mentioned battery box have the same advantages as those of the prior art, which will not be described in detail here.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 The partial structure of the battery box according to the embodiment of the utility model is shown in FIG. Figure 1;

[0020] Figure 2 The partial structure of the battery box according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 The partial structure of the battery box according to the embodiment of the utility model is shown in FIG. Figure 3 ;

[0022] Figure 4 The partial structure of the battery box according to the embodiment of the utility model is shown in FIG. Figure 4 .

[0023] Reference numerals:

[0024] Upper cover 1, lower box 2, inner bottom wall 21,

[0025] The locking bracket 3, the second clamping portion 31, the clamping hole 311, the clamping block 312, the guide matching surface 313, the limiting matching surface 314,

[0026] The locking base 4 , the first clamping portion 41 , the clamping protrusion 411 , the clamping guide surface 412 , the clamping stop surface 413 , and the mounting portion 42 . DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0031] Reference below Figure 1-Figure 4 The battery box according to the embodiment of the utility model has a simple structure and low manufacturing cost, and can ensure the sealing of the battery box and improve the NVH performance of the battery box.

[0032] like Figure 1-Figure 4 As shown, a battery box according to an embodiment of the utility model includes: a lower box body 2 and an upper cover plate 1, the upper cover plate 1 is detachably connected to the lower box body 2 to define a battery accommodating space, the upper cover plate 1 is provided with a locking bracket 3 protruding toward the lower box body 2, and the inner bottom wall 21 of the lower box body 2 is provided with a locking base 4 protruding toward the locking bracket 3, and the locking bracket 3 is suitable for being connected with the locking base 4 when the upper cover plate 1 is covered on the lower box body 2.

[0033] Among them, the battery pack is mostly installed under the vehicle body, and the battery pack is provided with a battery box. When the vehicle is driving, there is a risk of collision under the vehicle body. The battery box can support and protect the internal structure of the battery pack, and the battery box can isolate the internal and external environments of the battery pack, thereby playing a sealing role and ensuring the reliability of the internal operating environment of the battery pack.

[0034] Specifically, the battery case can be set to a rectangular shape, etc. The battery case is provided with an upper cover 1 and a lower case 2. The upper cover 1 and the lower case 2 are detachably connected, which is convenient for replacing the internal structure of the battery pack, and then convenient for maintenance, etc., saving maintenance time and saving maintenance costs. At the same time, after the upper cover 1 and the lower case 2 are connected, they can jointly define a closed accommodating space, that is, the lower case 2 forms a accommodating space, and the accommodating space is provided with an open mouth, the internal structure of the battery pack can be placed in the accommodating space from the open mouth, and when the upper cover 1 is covered at the open mouth of the lower case 2, the upper cover 1 and the lower case 2 can jointly form a closed accommodating space, so that the internal structure of the battery pack can be isolated from the external environment of the battery pack, thereby playing a sealing role, and ensuring the reliability of the internal operating environment of the battery pack.

[0035] Furthermore, the upper cover 1 is provided with a locking bracket 3, the locking bracket 3 is installed on the side of the upper cover 1 facing the accommodating space, and the locking bracket 3 is protruded toward the lower box body 2, the lower box body 2 is provided with a locking base 4, the locking base 4 is installed on the inner bottom wall 21 of the lower box body 2, and the locking base 4 is protruded toward the locking bracket 3 of the upper cover 1, the sum of the protruding length of the locking bracket 3 and the protruding length of the locking base 4 is greater than the length between the upper cover 1 and the inner bottom wall 21 of the lower box body 2, and the locking bracket 3 and the locking base 4 are protruded. The base 4 is set in a corresponding position. When the upper cover 1 is covered on the lower box body 2, the locking bracket 3 can be snap-connected with the locking base 4, and when the upper cover 1 completely closes the accommodating space, the locking bracket 3 can be snap-connected with the locking base 4, so that the upper cover 1 is fixed relative to the lower box body 2. The locking bracket 3 and the locking base 4 have low manufacturing costs and are easy to snap-connect, so that the upper cover 1 is detachable relative to the lower box body 2, and the reliability of the connection between the upper cover 1 and the lower box body 2 can be ensured, thereby improving the NVH performance of the battery box.

[0036] According to the battery case of the embodiment of the utility model, a locking bracket 3 is provided on the upper cover plate 1, and a locking base 4 is provided on the inner bottom wall 21 of the lower case 2, and the locking bracket 3 is suitable for being connected with the locking base 4 when the upper cover plate 1 is covered on the lower case 2, so that the upper cover plate 1 and the lower case 2 are detachably connected, the structure is simple, the manufacturing cost is low, and the sealing of the battery case can be ensured, the NVH performance of the battery case is improved, the use effect is better, and the application range is wider.

[0037] In some embodiments, the locking base 4 is provided with two oppositely distributed first clamping portions 41 , the locking bracket 3 is provided with a second clamping portion 31 , and the two first clamping portions 41 are suitable for being clamped together with the second clamping portion 31 .

[0038] Specifically, Figure 1-Figure 2 As shown, the locking base 4 is installed on the inner bottom wall 21 of the lower box body 2, and the locking base 4 is protruded toward the upper cover plate 1, and the locking base 4 is provided with a first clamping portion 41, the first clamping portion 41 can be set as a clamping protrusion, etc., and the first clamping portion 41 is provided with two, the two first clamping portions 41 are relatively distributed, the two first clamping portions 41 are inclined along the clamping direction, and the two first clamping portions 41 are in contact with each other in a natural state.

[0039] Furthermore, the locking bracket 3 is installed on the side of the upper cover 1 facing the accommodating space, and the locking bracket 3 protrudes toward the lower box body 2. The locking bracket 3 is provided with a second clamping portion 31. The second clamping portion 31 can be set as one or two. In the present embodiment, the second clamping portion 31 is set as two. Both the two second clamping portions 31 can be set as clamping plates, etc., and the two second clamping portions 31 are connected, thereby enhancing the structural strength of the second clamping portion 31, avoiding the locking bracket 3 from breaking, etc., and extending the service life of the locking bracket 3. When the upper cover 1 completely closes the accommodating space, the two first clamping portions 41 can be jointly clamped to the second clamping portion 31 to ensure the reliability of the clamping.

[0040] In some embodiments, the first clamping portion 41 has a clamping protrusion 411 , and the two clamping protrusions 411 are relatively distributed, the second clamping portion 31 has a clamping hole 311 , and the two clamping protrusions 411 are suitable for being clamped into the clamping hole 311 at the same time.

[0041] Specifically, Figure 1-Figure 2 As shown, the locking base 4 is provided with a first clamping portion 41, and the first clamping portion 41 can be set as a plate-like structure inclined along the clamping direction, and a clamping protrusion 411 is provided at one end of the first clamping portion 41 away from the inner bottom wall 21 of the lower box body 2, and the two first clamping portions 41 are both provided with a clamping protrusion 411, and the two clamping protrusions 411 are relatively distributed, that is, the two clamping protrusions 411 of the two first clamping portions 41 are in contact with each other under normal conditions, and the contact positions of the two clamping protrusions 411 are provided with circular chamfers, which can avoid stress concentration and extend the service life of the clamping protrusions 411, and when the second clamping portion 31 is clamped into the two clamping protrusions 411, damage to the second clamping portion 31 can be avoided, and the service life of the second clamping portion 31 can be extended, and it can play a guiding role in the clamping process, which is convenient for clamping.

[0042] Furthermore, a portion of the second clamping portion 31 is connected to a side of the upper cover plate 1 facing the lower box body 2, and a portion of the second clamping portion 31 is protruded toward the lower box body 2. The protruding portion is configured as a plate-like structure, and a clamping hole 311 is provided in the protruding portion. The clamping hole 311 can be configured as a rectangular hole or a circular hole, etc. When the second clamping portion 31 and the first clamping portion 41 are clamped together, the two clamping protrusions 411 can be clamped into the clamping hole 311 at the same time, thereby realizing the clamping of the second clamping portion 31 and the first clamping portion 41, so that the upper cover plate 1 is fixedly connected to the lower box body 2.

[0043] In some embodiments, the first clamping portion 41 is provided with a clamping guide surface 412 and a clamping stop surface 413, and the second clamping portion 31 is suitable for pushing the two clamping guide surfaces 412 to make the two first clamping portions 41 move in directions away from each other, and after crossing the clamping guide surfaces 412, they are clamped and stopped on the clamping stop surface 413.

[0044] Specifically, Figure 1-Figure 2 As shown, the two first clamping parts 41 are each provided with a clamping protrusion 411 at one end away from the inner bottom wall 21 of the lower box body 2, the two clamping protrusions 411 are relatively distributed, and the two clamping protrusions 411 are each provided with a clamping guide surface 412, the two clamping guide surfaces 412 are inclined, and the two clamping guide surfaces 412 gradually approach along the clamping direction until the two clamping protrusions 411 contact, so that the second clamping part 31 can move along the clamping guide surfaces 412 to the contact position of the two clamping protrusions 411, which is convenient for the clamping of the first clamping part 41 and the second clamping part 31, and ensures the clamping accuracy, and after the second clamping part 31 moves to the contact position of the two clamping protrusions 411, continuing to move along the clamping direction can push the two clamping guide surfaces 412, so that the two first clamping parts 41 can move in a direction away from each other, so that the second clamping part 31 can move between the two first clamping parts 41.

[0045] Furthermore, the first clamping portion 41 is also provided with a clamping stop surface 413, and the clamping stop surface 413 is arranged on the side of the clamping protrusion 411 away from the clamping guide surface 412. When the second clamping portion 31 pushes the two first clamping portions 41 to move in directions away from each other to between the two first clamping portions 41, it can continue to move along the clamping direction, so that the two clamping protrusions 411 can be clamped into the clamping holes 311 at the same time, and at this time the clamping holes 311 can be clamped and stopped at the clamping stop surface 413, thereby limiting the second clamping portion 31 from moving in the direction away from the clamping, thereby ensuring the reliability of the clamping.

[0046] In some embodiments, the second clamping portion 31 has a clamping block 312 , which is provided with a guide mating surface 313 and a limit mating surface 314 , the guide mating surface 313 is suitable for pushing the clamping guide surface 412 , and the limit mating surface 314 is limitedly mated with the clamping stop surface 413 .

[0047] Specifically, Figure 3-Figure 4 As shown, part of the second clamping portion 31 is connected to the side of the upper cover plate 1 facing the lower box body 2, and part of it is protruded toward the lower box body 2, the protruding part is set as a plate-like structure, and a clamping block 312 is set at the end of the protruding part of the second clamping portion 31 away from the upper cover plate 1, the clamping block 312 can be set to a cone, and the end with a smaller end size is set toward the lower box body 2, and the clamping block 312 is provided with a guide matching surface 313, the guide matching surface 313 is inclined along the clamping direction, and is opposite to the inclination direction of the clamping guide surface 412, when the first clamping portion 41 is clamped with the second clamping portion 31, the guide matching surface 313 can move along the clamping guide surface 412, and the guide matching surface 313 can push the clamping guide surface 412, so that the first clamping portion 41 is clamped with the second clamping portion 31, thereby ensuring the accuracy of the clamping.

[0048] Furthermore, the clamping block 312 is also provided with a limiting mating surface 314, and the limiting mating surface 314 is arranged on the side of the clamping block 312 away from the guide mating surface 313. The limiting mating surface 314 is arranged to be parallel to the clamping stop surface 413, and the clamping stop surface 413 is arranged to be perpendicular to the clamping direction. When the first clamping portion 41 and the second clamping portion 31 are clamped, the limiting mating surface 314 and the clamping stop surface 413 can be limitedly matched. The clamping stop surface 413 is arranged in parallel with the limiting mating surface 314 so that the contact surface is increased, thereby ensuring the reliability of the limit.

[0049] In some embodiments, there are two guide mating surfaces 313 and two limit mating surfaces 314, which are respectively located on both sides of the snap-in block 312; the two guide mating surfaces 313 respectively match with the two snap-in guide surfaces 412 one by one, and the two limit mating surfaces 314 respectively match with the two snap-in stop surfaces 413 one by one.

[0050] Specifically, Figure 3-Figure 4 As shown, the second clamping portion 31 is provided with a clamping block 312, and the clamping block 312 is provided with a guide mating surface 313. The guide mating surface 313 is provided in number. The two guide mating surfaces 313 are respectively located on both sides of the clamping block 312. The first clamping portion 41 is also provided in number. The two first clamping portions 41 are both provided with a clamping guide surface 412, so that the two guide mating surfaces 313 can respectively match with the two clamping guide surfaces 412 in a one-to-one correspondence. When the first clamping portion 41 is clamped with the second clamping portion 31, the two guide mating surfaces 313 can respectively move along the two clamping guide surfaces 412 to ensure the clamping reliability.

[0051] Furthermore, the clamping block 312 is also provided with a limiting mating surface 314, and there are two limiting mating surfaces 314, which are respectively located on both sides of the clamping block 312, and there are also two first clamping parts 41, and both first clamping parts 41 are provided with a clamping stop surface 413, so that the two limiting mating surfaces 314 can respectively match with the two clamping stop surfaces 413 one by one. When the first clamping part 41 and the second clamping part 31 are clamped, the two limiting mating surfaces 314 can respectively match with the two clamping stop surfaces 413 to ensure the reliability of the limit.

[0052] In some embodiments, the locking base 4 further includes a mounting portion 42 , and the two first clamping portions 41 are respectively connected to two sides of the mounting portion 42 , and the mounting portion 42 is connected to the inner bottom wall 21 of the lower box body 2 .

[0053] Specifically, Figure 1As shown, the locking base 4 is installed on the inner bottom wall 21 of the lower box body 2, and the locking base 4 is provided with two relatively distributed first clamping parts 41, and the two first clamping parts 41 can be connected to the second clamping part 31 at the same time, and the locking base 4 is also provided with a mounting part 42, and the mounting part 42 can be set as a mounting plate or a mounting block, etc. In this embodiment, the mounting part 42 is set as a mounting plate, and the mounting plate is set as a rectangle, the two first clamping parts 41 are connected to the mounting part 42, and the two first clamping parts and the mounting part 42 can be set as an integral molding or connected by welding, etc., the two first clamping parts 41 are respectively connected to the two sides of the mounting part 42, and an arc chamfer is set at the connection between the first clamping part 41 and the mounting part 42, which can avoid stress concentration and other problems and extend the service life of the locking base 4.

[0054] Furthermore, the mounting portion 42 is connected to the inner bottom wall 21 of the lower box body 2, so that the locking base 4 is connected to the inner bottom wall 21 of the lower box body 2 as a whole, and the mounting portion 42 can be connected to the inner bottom wall 21 of the lower box body 2 through a connecting member, and the connecting member can be set to a bolt, etc., which has low setting cost and convenient connection, or the mounting portion 42 can be connected to the inner bottom wall 21 of the lower box body 2 by bonding, welding, etc., which can avoid opening holes in the inner bottom wall 21 of the lower box body 2, etc., to ensure the structural strength of the inner bottom wall 21 of the lower box body 2, and the two first clamping portions 41 are connected to the inner bottom wall 21 of the lower box body 2 through the mounting portion 42, which can increase the connection area and thus improve the connection reliability.

[0055] In some embodiments, the locking bracket 3 is welded or bonded to the upper cover plate 1, and the upper cover plate 1 is provided with the locking bracket 3. The locking bracket 3 is installed on the side of the upper cover plate 1 facing the accommodating space and protrudes toward the lower box body 2, and the locking bracket 3 can be connected to the upper cover plate 1 by welding or bonding. Connecting to the upper cover plate 1 by welding or bonding can avoid the upper cover plate 1 from having openings after being connected to the locking bracket 3 by bolts, thereby causing problems such as low structural strength in the opening area of ​​the upper cover plate 1, and thus avoid the high-pressure gas generated when the battery pack is used from breaking through the upper cover plate 1, causing problems such as thermal runaway and gas leakage, which can improve the safety of the battery pack, and can make the structure of the upper cover plate 1 simple, thereby reducing the manufacturing cost of the upper cover plate 1.

[0056] In some embodiments, the locking base 4 is located in the middle area of ​​the inner bottom wall 21 of the lower box body 2 .

[0057] Specifically, the locking bracket 3 is installed on the side of the upper cover 1 facing the accommodating space, and the locking bracket 3 protrudes toward the lower box body 2, the locking base 4 is installed on the inner bottom wall 21 of the lower box body 2, and the locking base 4 protrudes toward the locking bracket 3 of the upper cover 1, and the locking base 4 is located in the middle area of ​​the inner bottom wall 21 of the lower box body 2, that is, the locking base 4 can be set at the center position of the inner bottom wall 21 of the lower box body 2, the locking bracket 3 and the locking base 4 are correspondingly arranged, and the upper cover 1 and the lower box body 2 are correspondingly arranged, that is, the locking bracket 3 is also arranged at the center position of the upper cover 1.

[0058] When the upper cover 1 closes the accommodating space, the upper cover 1 is connected to the lower box body 2, and the locking bracket 3 and the locking base 4 are connected by clamping. At this time, the upper cover 1 will be subjected to the supporting force generated by the upper end surface of the lower box body 2, and the supporting force can be transmitted to the locking bracket 3 along the upper cover 1. When the locking base 4 is located at the center position of the inner bottom wall 21 of the lower box body 2 and the locking bracket 3 is also set at the center position of the upper cover 1, the forces transmitted from various places to the locking bracket 3 and the locking base 4 are equal, thereby avoiding deformation caused by uneven force on the locking bracket 3 and the locking base 4, thereby ensuring the reliability of the clamping of the locking bracket 3 and the locking base 4.

[0059] The utility model also provides a vehicle.

[0060] A vehicle according to an embodiment of the utility model includes a battery pack, and the battery pack is provided with any one of the battery boxes described above.

[0061] According to the vehicle of the embodiment of the utility model, a battery pack is provided, and the battery pack is provided with a battery box. The battery box is provided with a locking bracket 3 on the upper cover plate 1, and a locking base 4 is provided on the inner bottom wall 21 of the lower box 2. The locking bracket 3 is suitable for being connected with the locking base 4 when the upper cover plate 1 is covered on the lower box 2, so that the upper cover plate 1 and the lower box 2 are detachably connected. The structure is simple and the manufacturing cost is low. The sealing of the battery box can be ensured, the NVH performance of the battery box is improved, the use effect is better, and the application range is wider.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery box, characterized in that: include: A lower box body and an upper cover plate, wherein the upper cover plate is detachably connected to the lower box body to define a battery accommodating space, the upper cover plate is provided with a locking bracket protruding toward the lower box body, and the inner bottom wall of the lower box body is provided with a locking base protruding toward the locking bracket, and the locking bracket is suitable for being connected with the locking base when the upper cover plate is covered on the lower box body.

2. The battery box according to claim 1, characterized in that: The locking base is provided with two first clamping parts that are relatively distributed, and the locking bracket is provided with a second clamping part. The two first clamping parts are suitable for being clamped together with the second clamping part.

3. The battery box according to claim 2, characterized in that: The first clamping portion has a clamping protrusion, and the two clamping protrusions are relatively distributed. The second clamping portion has a clamping hole, and the two clamping protrusions are suitable for being clamped into the clamping holes at the same time.

4. The battery case according to claim 2 or 3, characterized in that: The first clamping portion is provided with a clamping guide surface and a clamping stop surface, and the second clamping portion is suitable for pushing the two clamping guide surfaces to make the two first clamping portions move in directions away from each other, and after crossing the clamping guide surfaces, the second clamping portion is clamped and stopped at the clamping stop surface.

5. The battery box according to claim 4, characterized in that: The second clamping portion has a clamping block, and the clamping block is provided with a guide matching surface and a limit matching surface. The guide matching surface is suitable for pushing the clamping guide surface, and the limit matching surface is limit matched with the clamping stop surface.

6. The battery box according to claim 5, characterized in that: There are two guide mating surfaces and two limit mating surfaces, which are respectively located on two sides of the clamping block; The two guide matching surfaces are matched with the two clamping guide surfaces in a one-to-one correspondence, and the two limit matching surfaces are matched with the two clamping stop surfaces in a one-to-one correspondence.

7. The battery box according to claim 2, characterized in that: The locking base also includes a mounting portion, the two first clamping portions are respectively connected to two sides of the mounting portion, and the mounting portion is connected to the inner bottom wall of the lower box body.

8. The battery box according to claim 1, characterized in that: The locking bracket is connected to the upper cover plate by welding or bonding.

9. The battery box according to claim 1, characterized in that: The locking base is located in the middle area of ​​the inner bottom wall of the lower box body.

10. A vehicle, characterized in that: It comprises a battery pack, wherein the battery pack is provided with a battery case according to any one of claims 1-9.

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