CN220585375U - Box assembly, battery and power utilization device - Google Patents

Abstract

The application is applicable to the technical field of batteries and provides a box assembly, a battery and an electric device, wherein the box assembly comprises a box body, a cover body, a separation beam and a mounting assembly, the box body is provided with a bottom plate, and the cover body is matched with the box body to form a containing space; the accommodating space is arranged in the accommodating space so as to be divided into a plurality of accommodating units; the mounting assembly comprises a cylinder body, a first locking piece and a second locking piece, wherein the cylinder body and the separation beam are of an integrated structure, the first locking piece is connected with the cover body and the cylinder body, and the second locking piece is connected with the bottom plate and the cylinder body; the mounting assembly is provided with a mounting hole, and the mounting hole penetrates through the first locking piece, the cylinder body and the second locking piece. The box assembly that this application provided is because barrel and dividing beam integrated into one piece structure, consequently can alleviate even avoid the barrel to take place to follow the commentaries on classics phenomenon to a certain extent.

Description

Box assembly, battery and power utilization device

Technical Field

The application relates to the technical field of batteries, in particular to a box assembly, a battery and an electric device.

Background

In new energy automobiles, batteries are generally used as a power source. The battery is connected with the automobile through the mounting assembly, and the battery includes box and lid, and the box has bottom plate and supporting beam, is provided with the through-hole on supporting beam, and the mounting assembly includes middle part sleeve, switching sleeve, top sleeve and bottom sleeve, and the through-hole on the crossbeam is passed to the middle part sleeve, and the bottom of middle part sleeve is fixed with the bottom plate of box through the bottom sleeve, and the telescopic top of middle part is connected with the switching sleeve, and the telescopic top of switching is connected with the lid through the top sleeve. Thereby fixedly connecting the mounting assembly with the box body.

In the related art, the middle sleeve is in threaded connection with the bottom sleeve, the middle sleeve is in threaded connection with the switching sleeve, and the switching sleeve is in threaded connection with the top sleeve. The setting like this for at the in-process of installing or dismantling top sleeve, twist top sleeve, can drive the switching sleeve and rotate, also exist the switching sleeve and follow the phenomenon of changeing promptly.

Disclosure of Invention

An aim of the embodiment of the application is to provide a box assembly, which aims at solving the following phenomenon of a transfer sleeve in the disassembly process of a mounting assembly in the prior art.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows:

in a first aspect, there is provided a tank assembly comprising:

the box body is provided with a bottom plate;

the cover body is matched with the box body to form a containing space;

the separation beam is arranged in the accommodating space to separate the accommodating space into a plurality of accommodating units;

the mounting assembly comprises a cylinder body, a first locking piece and a second locking piece, wherein the cylinder body and the separation beam are of an integrated structure, the first locking piece is connected with the cover body and the cylinder body, and the second locking piece is connected with the bottom plate and the cylinder body; the mounting assembly is provided with a mounting hole, and the mounting hole penetrates through the first locking piece, the cylinder body and the second locking piece.

In the box subassembly that this application embodiment provided, barrel and separating beam just structure for integrated into one piece, barrel and separating beam are connected with the lid through first retaining member, are connected with the bottom plate through the second retaining member to make barrel, separating beam, bottom plate and lid connect fixedly. The connecting piece is penetrated in the mounting hole, so that the box body assembly is fixed in an electric device (such as an automobile) through the connecting piece. Because the barrel and the separation beam in the mounting assembly are of an integrated structure, the assembly operation of the barrel and the separation beam is not needed, and the assembly time of the box assembly is saved. Because there is not the adapter sleeve in the mount subassembly, first retaining member and barrel lug connection, and barrel and dividing roof beam integrated into one piece structure, consequently when being connected or dismantle first retaining member and barrel to and when being connected or dismantle second retaining member and barrel, the barrel can not rotate or swing for dividing the roof beam, also can not have the adapter sleeve to follow the phenomenon of changeing promptly.

In one possible design, the case assembly further includes a first seal disposed between the cover and the barrel.

In this arrangement, the provision of the first seal improves the sealing performance between the cap and the barrel.

In one possible design, the cover is provided with a first through hole, the cylinder comprises a main body part and a first protruding part located at one end of the main body part, the main body part is located at one side of the cover, a part of the first protruding part penetrates through the first through hole and is located at the other side of the cover, the first protruding part is provided with a first external thread, and the first locking piece is provided with a first threaded hole matched with the first external thread.

In this kind of setting scheme, because the lid is provided with first through-hole, consequently first convex part can stretch out to the lid to make first convex part be located the outside of accommodation space, be convenient for realize with the connection of first locking piece. Because the first locking piece is provided with first screw hole, and first convex part is provided with first external screw thread, consequently first convex part passes through screw-thread fit connection with first locking piece, joint strength is high, and dismouting efficiency is high.

In one possible design, the tank assembly further includes a second seal disposed between the bowl and the floor.

In this arrangement, the provision of the second seal improves the sealing between the base plate and the barrel.

In one possible design, the bottom plate includes a bottom shield and a cooling structure, the cooling structure is located on a side of the bottom shield facing the cover, the housing assembly further includes a third seal, the third seal is located between the cooling structure and the bottom plate, and the third seal is located around the exterior of the cartridge.

In the arrangement mode, the arrangement of the third sealing piece can improve the sealing performance between the water cooling structure and the cylinder body.

In one possible design, the base plate includes a bottom shield and a cooling structure, the cooling structure being located on a side of the bottom shield facing the cover, and the cartridge being welded to the cooling structure.

In this arrangement, the welded connection improves the sealing between the cartridge and the cooling structure.

In one possible design, the maximum dimension of the first locking member in the width direction of the partition beam is smaller than or equal to the maximum dimension of the partition beam.

In this arrangement, the first locking member does not protrude to the outside of the partition beam in the width direction of the partition beam, i.e., the possibility of collision of the battery module with the first locking member is reduced.

In one possible design, the bottom plate has a second through hole, the cylinder includes a main body portion and a second protruding portion located at one end of the main body portion, the main body portion is located at one side of the bottom plate, a portion of the second protruding portion passes through the second through hole and is located at the other side of the bottom plate, the second protruding portion is provided with a second external thread, and the second locking member is provided with a second threaded hole matched with the second external thread.

In this kind of setting method, second retaining member and second convex part screw-thread fit are connected for the dismouting of second retaining member is more convenient.

In one possible design, the end of the cylinder adjacent to the second locking member is provided with a third threaded hole, and the second locking member is provided with a third external thread matching the third threaded hole.

In this arrangement, a portion of the second locking member extends into the third threaded hole, thereby reducing the length of the portion of the second locking member that leaks outside the tub.

In one possible design, a plurality of dividing beams are provided in the receiving space, at least one dividing beam being provided with a mounting assembly.

In the arrangement mode, the plurality of separation beams can be only partially provided with the mounting assemblies, and can also be fully provided with the mounting assemblies, and the positions and the number of the mounting assemblies can be set according to the mounting requirements.

In one possible design, a plurality of mounting assemblies are spaced apart along the length of the spacer beam.

In this kind of setting method, be provided with a plurality of mounting components on a dividing beam, can increase the mounting point position quantity of box subassembly, improve the mounting stability.

In one possible design, the side of the dividing beam adjacent to the cover is provided with a relief area.

In this kind of setting mode, dodge the district and can be used to dodge the component in the box, increase the interior structural layout compactness of box, more effectively utilize accommodation space.

In a second aspect, there is provided a battery comprising: a tank assembly according to any one of the preceding claims.

The battery comprises the box assembly, so that the battery at least comprises all beneficial effects of the box assembly, and the detailed description is omitted.

In a third aspect, an electrical device is provided, where the electrical device includes a battery according to the above technical solution, and the battery is used for providing electrical energy.

The power utilization device comprises the battery, so that the power utilization device has at least all the beneficial effects of the battery and is not repeated herein.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a sectional view of a related art tank assembly;

FIG. 2 is a schematic view of a housing assembly according to one embodiment of the present application;

FIG. 3 is a schematic view of yet another view of the housing assembly provided in accordance with one embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of the housing assembly of FIG. 3 taken along the direction A-A;

FIG. 5 is a schematic view of a structure of a case assembly according to an embodiment of the present application without a cover;

FIG. 6 is a schematic view of a mounting beam in a box assembly according to one embodiment of the present application;

FIG. 7 is an enlarged view at A in FIG. 5;

FIG. 8 is a schematic view of the assembly of a cover and a case in a case assembly provided in one embodiment of the present application;

FIG. 9 is a cross-sectional view of a mounting beam in a box assembly provided in one embodiment of the present application;

FIG. 10 is a cross-sectional view of a first retaining member in a housing assembly according to one embodiment of the present application;

fig. 11 is an enlarged view at B in fig. 5;

FIG. 12 is a partial schematic view of a mounting beam in a box assembly provided in one embodiment of the present application;

FIG. 13 is a cross-sectional view of an assembly of a cover and a tank in a tank assembly provided in one embodiment of the present application;

FIG. 14 is a cross-sectional view of a second retaining member in a housing assembly provided in one embodiment of the present application;

FIG. 15 is a cross-sectional view of a tank assembly provided in another embodiment of the present application;

FIG. 16 is a cross-sectional view of a mounting beam in a box assembly provided in another embodiment of the present application;

FIG. 17 is a cross-sectional view of a second retaining member in a housing assembly according to another embodiment of the present application;

fig. 18 is a cross-sectional view of a tank assembly provided in accordance with yet another embodiment of the present application.

Reference numerals related to the above figures are as follows:

in fig. 1:

1. a top sleeve; 2. a middle sleeve; 3. a bottom sleeve; 4. a transfer sleeve; 5. a seal ring; 6. chamfering; 7. a cover body; 8. a bottom guard board; 9. a water cooling plate; 10. a cross beam;

in fig. 2 to 18:

100. a case; 101. a bottom plate; 110. a bottom guard board; 111. a second through hole; 120. a first seal; 130. a second seal; 140. a cooling structure; 141. a first laminate; 142. a second laminate; 143. a third through hole; 150. a third seal;

200. a cover body; 210. a first through hole;

300. a dividing beam; 310. a cross beam; 320. a longitudinal beam; 330. an avoidance zone; 340. a housing unit;

400. a mounting assembly; 401. mounting a beam; 410. a cylinder; 411. a mounting hole; 4111. a first section; 4112. a second section; 4113. a step surface; 412. a main body portion; 413. a first convex portion; 4131. a first external thread; 4132. a first seal groove; 414. a second convex portion; 4141. a second external thread; 4142. a third threaded hole; 4143. a second seal groove; 420. a first locking member; 421. a first threaded hole; 430. a second locking member; 431. a second threaded hole; 432. and a third external thread.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the referenced tank assemblies or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

It should be noted that, in the drawings, all sectional views are the same in the direction A-A in fig. 3.

Along with the serious environmental pollution, the environmental protection consciousness of people is gradually enhanced, and the new energy industry is rapidly raised at the moment, so that a wide space is provided for the application and development of the secondary battery. The secondary battery has the characteristics of higher energy density, longer cycle life, good charge-discharge rate performance and the like, and has been widely used. More and more electric devices, such as mobile phones, notebook computers, electric tools, electric automobiles and the like, select secondary batteries as power sources, and the secondary batteries used in the electric devices are generally called power batteries. The power battery generally comprises a box assembly and a battery unit, wherein the box assembly is used for providing a containing space to contain the battery unit.

In the related art, the box subassembly includes box, lid 7 and mount subassembly, the box includes bottom backplate 8 and water-cooling board 9, be provided with crossbeam 10 in the box, be provided with the through-hole on the crossbeam 10, the through-hole runs through crossbeam 10 along the thickness direction of box subassembly, as shown in fig. 1, mount subassembly includes middle part sleeve 2, adapter sleeve 4, top sleeve 1 and bottom sleeve 3, the through-hole on the crossbeam 10 is passed to middle part sleeve 2, the bottom of middle part sleeve 2 is fixed with the bottom backplate 8 of box through bottom sleeve 3, the top of middle part sleeve 2 is connected with adapter sleeve 4, the top of adapter sleeve 4 is connected with lid 7 through top sleeve 1. Thereby fixedly connecting the mounting assembly with the box body. The middle sleeve 2 is in threaded connection with the bottom sleeve 3, the middle sleeve 2 is in threaded connection with the adapter sleeve 4, and the adapter sleeve 4 is in threaded connection with the top sleeve 1. In the process of installing or detaching the top sleeve 1, the top sleeve 1 is screwed to drive the adapter sleeve 4 to rotate, that is, the adapter sleeve 4 rotates along with the rotation phenomenon exists.

Based on the above-mentioned considerations, the inventors have conducted intensive studies in order to solve the above-mentioned problems, and devised a case assembly. As shown in fig. 2 to 4, the case assembly includes a case 100, a cover 200, a partition beam 300, and a mounting assembly 400, the mounting assembly 400 includes a cylinder 410, a first locking member 420, and a second locking member 430, and the cylinder 410 and the partition beam 300 are integrally formed. In this way, on the one hand, since the cylinder 410 and the partition beam 300 are integrally formed, the following phenomenon of the cylinder 410 can be reduced or even avoided to some extent. On the other hand, the mounting assembly 400 has a simpler structure due to the reduced number of components, and reduces the sealing interface and the sealing difficulty.

The battery assembly, the battery and the power consumption device provided in the embodiments of the present application are explained in detail below.

In the embodiment of the present application, the length direction of the case 100 is the X-axis direction, the width direction of the case 100 is the Y-axis direction, and the thickness direction of the case 100 is the Z-axis direction.

In a first aspect of the embodiments of the present application, a box assembly is provided, including a box 100, a cover 200, a separation beam 300, and a mounting assembly 400, where the box 100 has a bottom plate 101, and the cover 200 cooperates with the box 100 to form a containing space; is disposed in the accommodating space to divide the accommodating space into a plurality of accommodating units 340; the mounting assembly 400 includes a cylinder 410, a first locking member 420 and a second locking member 430, wherein the cylinder 410 and the partition beam 300 are integrally formed, the first locking member 420 is connected with the cover 200 and the cylinder 410, and the second locking member 430 is connected with the bottom plate 101 and the cylinder 410; mounting assembly 400 is provided with mounting holes 411, mounting holes 411 penetrating first locking member 420, barrel 410 and second locking member 430.

The case 100 is used for forming a certain accommodating space, the case 100 is provided with a frame and a bottom plate 101, and the cover 200 and the bottom plate 101 are respectively located at two opposite sides of the frame, so that the cover 200, the bottom plate 101 and the frame enclose together to form the accommodating space. The rim is connected to the bottom plate 101.

The cover 200 is configured to cooperate with the case 100 to form a containing space, and one side of the cover 200 facing the case 100 may be a planar structure or may have a concave structure, so that the cover 200 itself has a certain containing space, the cover 200 is covered on the case 100, the containing space of the cover 200 and the containing space of the case 100 may be partially overlapped, and the cover 200 and the case 100 enclose together to form the containing space.

The separation beam 300 is disposed in the case 100, the separation beam 300 may be connected to at least one of the frame and the bottom plate 101 of the case 100, the separation beam 300 is used to separate a relatively large receiving space inside the case 100 into a plurality of receiving units 340, the receiving units 340 are used to receive a battery module, and the battery module includes one or more battery cells. The partition beam 300 includes at least one of a cross beam 310 and a side beam 320, the cross beam 310 being a beam body extending in the Y-axis direction, and the side beam 320 being a beam body extending in the X-axis direction. When only the cross member 310 is provided in the case 100, the receiving space is partitioned into a plurality of receiving units 340 distributed in the X-axis direction. When only the stringers 320 are provided in the case 100, the accommodating space is partitioned into a plurality of accommodating units 340 distributed in the Y-axis direction. When the cross members 310 and the side members 320 are simultaneously provided in the case 100, the cross members 310 and the side members 320 are alternately arranged to divide the accommodation space into a plurality of accommodation units 340 arranged in a matrix. Illustratively, in fig. 5, the number of the cross members 310 is one, the number of the side members 320 is two, and one cross member 310 and two side members 320 divide the receiving space into six receiving units 340.

Barrel 410 may be integrally formed with cross member 310 or with side member 320, i.e., an integral indivisible structure produced by an integral molding process, which may be cast.

For convenience of reference, the integral structure of the cylinder 410 and the partition beam 300 is referred to as a mounting beam 401.

The first locking member 420 is used for detachably connecting the mounting beam 401 with the cover 200, and the second locking member 430 is used for detachably connecting the mounting beam 401 with the bottom plate 101. Specifically, the first locking member 420 detachably connects the mounting beam 401 with the cover 200 by detachably connecting the cylinder 410 with the cover 200, and the second locking member 430 detachably connects the mounting beam 401 with the base 101 by detachably connecting the cylinder 410 with the base 101.

The mounting assembly 400 is provided with a mounting hole 411, and the mounting hole 411 is penetrated and arranged on the first locking member 420, the cylinder 410 and the second locking member 430, that is, through holes are formed in the first locking member 420, the second locking member 430 and the cylinder 410, and the three through holes are coaxially arranged, so that one end of a connecting member for connecting the box assembly and the electric device can penetrate through the mounting hole 411 to be connected with the electric device.

The mounting hole 411 has various arrangement modes, and in one possible arrangement mode, the mounting hole 411 includes three hole sections, which are respectively disposed on the first locking member 420, the barrel 410 and the second locking member 430, and the three hole sections are mutually communicated and coaxially disposed. In another possible arrangement, the mounting hole 411 includes two hole segments, one of which is disposed on the cylinder 410 and the other of which is disposed on one of the first locking member 420 and the second locking member 430, the two hole segments being in communication with each other and coaxially disposed, and the other of the first locking member 420 and the second locking member 430 being sleeved on the outside of the cylinder 410. In another possible arrangement, the mounting hole 411 is disposed on the barrel 410, the first locking member 420 is sleeved on one end of the barrel 410, and the second locking member 430 is sleeved on the other end of the barrel 410, as shown in fig. 4.

In the case assembly provided in this embodiment, the cylinder 410 and the separation beam 300 are integrally formed, and the cylinder 410 and the separation beam 300 are connected with the cover 200 through the first locking member 420 and connected with the bottom plate 101 through the second locking member 430, so that the cylinder 410, the separation beam 300, the bottom plate 101 and the cover 200 are fixedly connected. The case assembly is fixed in an electric device (e.g., an automobile) by the connection member by penetrating the connection member in the mounting hole 411. Because the cylinder 410 and the partition beam 300 in the mounting assembly 400 are in an integrated structure, the assembly operation of the cylinder 410 and the partition beam 300 is not required, and the assembly time of the box assembly is saved. Because the cylinder 410 and the partition beam 300 are integrally formed, when the first locking member 420 is connected to or detached from the cylinder 410 and when the second locking member 430 is connected to or detached from the cylinder 410, the cylinder 410 does not rotate or swing relative to the partition beam 300, so that the first locking member 420 and the second locking member 430 can be conveniently assembled and disassembled, and the assembly and disassembly efficiency of the first locking member 420 and the second locking member 430 is improved.

In one possible design, a plurality of dividing beams 300 are disposed within the receiving space, at least one dividing beam 300 being provided with a mounting assembly 400.

That is, if a plurality of beams 310 are disposed in the accommodating space, only one or a few of the beams 310 may be provided with the mounting assemblies 400, but the other beams 310 may not be provided with the mounting assemblies 400, and all the beams 310 may be provided with the mounting assemblies 400. If a plurality of stringers 320 are disposed in the accommodating space, only one or a few of the stringers 320 may be provided with the mounting assembly 400, while the other stringers 320 may not be provided with the mounting assembly 400, or all stringers 320 may be provided with the mounting assembly 400. If the cross beams 310 and the longitudinal beams 320 are arranged in the accommodating space, the mounting assemblies 400 may be arranged on one or more cross beams 310, and the mounting assemblies 400 may be arranged on all the cross beams 310 and the longitudinal beams 320. Illustratively, as shown in fig. 5, the number of cross beams 310 is one, the number of stringers 320 is two, and mount assemblies 400 are provided on the cross beams 310 and mount assemblies 400 are not provided on the stringers 320.

In this arrangement, the plurality of partition beams 300 may be provided with only a part of the mount assemblies 400, or may be provided with all of the mount assemblies 400, and the positions and the number of the mount assemblies 400 may be set according to the mount requirements.

In one possible design, a plurality of mounting assemblies 400 are spaced apart along the length of the spacer beam 300, on the spacer beam 300. When the partition beam 300 is the cross beam 310, the length direction of the cross beam 310 is the Y-axis direction, and when the partition beam 300 is the side beam 320, the length direction of the side beam 320 is the X-axis direction.

Illustratively, in fig. 5, mount assemblies 400 are disposed on a beam 310, and three mount assemblies 400 are disposed on the beam 310 at intervals along the Y-axis direction.

In this arrangement, a plurality of mounting assemblies 400 are provided on one partition beam 300, so that the number of mounting points of the box assembly can be increased, and the mounting stability can be improved.

In other arrangements, only one mounting assembly 400 may be provided on one dividing beam 300, or, when the number of dividing beams 300 is plural, one or more dividing beams 300 are provided with mounting assemblies 400, and the other dividing beams 300 are not provided with mounting assemblies 400.

In one possible design, the side of the dividing beam 300 adjacent to the cover 200 is provided with a relief area 330.

Dodge district 330 is concave structure, can be structures such as through-hole, recess, breach, dodges district 330 and can be used to dodge the protruding structure on lid 200, also can be used to dodge other structures of installation in the accommodation space, dodges, for example dodges the cable, dodges district 330 and can play the holding cable, carry out spacing effect to the cable. Illustratively, as shown in fig. 6, the avoidance areas 330 are disposed at both ends of the separation beam 300 in the length direction, and a height difference is formed between the top surface of the avoidance areas 330 and the top surface of the other part of the separation beam 300, and a distance between the top surface of the avoidance areas 330 and the bottom plate 101 is smaller than a distance between the top surface of the other part of the separation beam 300 and the bottom plate 101. The top surface of the separation beam 300 is the surface of the separation beam 300 close to the cover 200.

In this arrangement, the avoidance area 330 may be used to avoid the cover 200 or the components in the box 100, so as to increase the compactness of the structural layout in the box 100, and more effectively utilize the accommodating space.

In one possible design, the case assembly further includes a first seal 120, the first seal 120 being disposed between the cover 200 and the barrel 410. In this arrangement, the provision of the first sealing member 120 may improve the sealing performance between the cap 200 and the cylinder 410.

The first sealing member 120 is used to close the gap between the cover 200 and the cylinder 410, and as shown in fig. 4, for example, the first sealing member 120 may be located between the end face of the main body 412 of the cylinder 410, which is close to the cover 200, and the cover 200. A sealing groove may be formed on an end surface of the cover 200 and/or the main body 412, which is close to the cover 200, and the first sealing member 120 is accommodated in the sealing groove and contacts the main body 412 and the cover 200, respectively. Illustratively, as shown in fig. 7, a first seal groove 4132 is provided on an end surface of the main body 412, which is close to the cover 200, the first seal groove 4132 is an annular groove, and the first seal groove 4132 is enclosed in an outer peripheral region of the first protruding portion 413.

The first seal 120 is accommodated in the first seal groove 4132, and the first seal 120 is circumferentially enclosed around the outer periphery of the first protrusion 413. The first sealing member 120 may be made of a material having a certain elasticity and having a liquid-proof and dust-proof effect, such as rubber, silica gel, etc.

In one possible design, as shown in fig. 8, the cover 200 is provided with a first through hole 210, as shown in fig. 9, the cylinder 410 includes a main body 412 and a first protrusion 413 located at one end of the main body 412, the main body 412 is located at one side of the cover 200, as shown in fig. 4 and 10, a portion of the first protrusion 413 passes through the first through hole 210 and is located at the other side of the cover 200, the first protrusion 413 is provided with a first external thread 4131, and the first locking member 420 is provided with a first threaded hole 421 matching the first external thread 4131.

The first through hole 210 penetrates the cover 200 along the Z-axis direction, and is used for allowing a part of the structure of the cylinder 410 to extend out of the cover 200, so that the cylinder is connected with the first locking member 420.

The dimension of the body portion 412 in the Z-axis direction is the same as the dimension of the partition beam 300 in the Z-axis direction, or the dimension of the body portion 412 in the Z-axis direction is larger than the dimension of the partition beam 300 in the Z-axis direction, that is, at least one of the ends of the body portion 412 may be located outside the partition beam 300. As shown in fig. 4, both ends of the main body portion 412 in the Z-axis direction protrude from the partition beam 300. The first protruding portion 413 is located on a side of the main body portion 412 near the cover 200, the first protruding portion 413 and the main body portion 412 are integrally formed, and in a direction parallel to a surface of the main body portion 412 near the cover 200, a dimension of the first protruding portion 413 in at least one direction is smaller than a dimension of the cover 200. Illustratively, the end surface of the body portion 412 on the side of the partition beam 300 near the cover 200 is annular, the first protruding portion 413 is cylindrical, and the outer diameter of the first protruding portion 413 is smaller than the outer diameter of the body portion 412. And the outer diameter of the first protrusion 413 is less than or equal to the aperture of the first through hole 210 such that the first protrusion 413 can pass through the first through hole 210.

In this arrangement, since the cover 200 is provided with the first through hole 210, the first protrusion 413 may extend to the cover 200, so that the first protrusion 413 is located outside the accommodating space, so as to facilitate connection with the first locking member. Since the first locking member is provided with the first screw hole 421 and the first protrusion 413 is provided with the first external screw thread 4131, the first protrusion 413 is connected with the first locking member by screw-fit, and the connection strength is high and the dismounting efficiency is high.

As shown in fig. 10 and 11, the first locking member has a cylindrical structure, and an outer contour surface thereof has a prismatic shape so as to be screwed. The first locking member is provided with a first screw hole 421 penetrating in the Z-axis direction, and an internal screw of the first screw hole 421 is matched with the first external screw 4131 to screw-connect the first locking member with the first protrusion 413 by screw-fit.

As shown in fig. 1, in the related art, the top sleeve 1 has external threads, and the adapter sleeve 4 has a screw hole, and a portion of the top sleeve 1 having the external threads protrudes into the screw hole, so that the top sleeve 1 is screw-coupled with the adapter sleeve 4. Since the butt joint cannot be directly seen when screwing the top sleeve 1 into the adapter sleeve 4, for easy installation, a chamfer 6 is provided in the end region of the threaded hole of the adapter sleeve 4, the chamfer 6 is used for guiding the top sleeve 1, and a sealing ring 5 is also required to be provided on the end face of the adapter sleeve 4, since the chamfer 6 and the sealing ring 5 are required to be provided, the end face of the adapter sleeve 4 is larger in size, in fig. 1, the adapter sleeve 4 is larger in size along the X-axis direction, and the top sleeve 1 is also larger in size for cooperation with the adapter sleeve 4. This makes the size of the mounting assembly 400 in the X-axis direction, which is close to the end of the cover 7, larger in the related art, and the adapter sleeve 4 is easily impacted with the battery module when the battery module or the battery cell is placed in the case 100.

In the mounting assembly 400 provided in this embodiment of the present application, since the first locking member is provided with the first threaded hole 421 and the first protrusion 413 is provided with the first external thread 4131, when the first locking member is mounted to the first protrusion 413, the first locking member and the first protrusion 413 can be aligned directly through observation, and therefore no chamfer is required to be provided, which makes the mounting assembly 400 provided in this embodiment of the present application that the size of the end of the cylinder 410 close to the cover 200 and the size of the first locking member in the X-axis direction are relatively smaller, thereby providing a larger avoiding space for mounting the battery module or the battery cell.

In one possible design, the maximum dimension of the first locking member 420 is less than or equal to the maximum dimension of the dividing beam 300 in the width direction of the dividing beam 300.

The width direction of the partition beam 300, i.e., in the X-axis direction. In the Z-axis direction, the dimensions of the first locking member 420 in the X-axis direction may be equal or unequal, that is, the first locking member 420 may have an equal diameter structure or a variable diameter structure, where the diameter refers to the dimension of the first locking member 420 in the X-axis direction. Similarly, the dimensions of the dividing beam 300 in the X-axis direction may be equal or unequal in the Z-axis direction, that is, the dividing beam 300 may have an equal diameter structure or a variable diameter structure, and the diameter here refers to the dimension of the dividing beam 300 in the X-axis direction.

In this arrangement, the first locking member 420 does not protrude to the outside of the partition beam 300 in the width direction of the partition beam 300, i.e., the possibility of collision of the battery module with the first locking member 420 is reduced.

As shown in fig. 4, in one possible design, the tank assembly further includes a second seal 130, the second seal 130 being disposed between the cylinder 410 and the bottom plate 101. In this arrangement, the provision of the second seal 130 may improve the sealing performance between the base plate 101 and the cylinder 410.

The second sealing member 130 is used to seal a gap between the bottom plate 101 and the cylinder 410, and as shown in fig. 4, for example, the second sealing member 130 may be located between a side end surface of the body portion 412 of the cylinder 410, which is close to the bottom plate 101, and the bottom plate 101. A sealing groove may be formed on an end surface of the base plate 101 and/or the main body 412 near the base plate 101, the second sealing member 130 is accommodated in the sealing groove, and the sealing members are respectively contacted with the main body 412 and the base plate 101. Illustratively, as shown in fig. 12, a second seal groove 4143 is provided on an end surface of the main body 412, which is close to the bottom plate 101, the second seal groove 4143 is an annular groove, and the second seal groove 4143 is enclosed in an outer peripheral region of the second protrusion 414.

The second seal 130 is accommodated in the second seal groove 4143, and the second seal 130 is enclosed around the periphery of the second protrusion 414. The second sealing member 130 may be made of a material having a certain elasticity and having a liquid-proof and dust-proof effect, such as rubber, silica gel, etc.

In one possible design, as shown in fig. 13, the bottom plate 101 has a second through hole 111, as shown in fig. 9, the cylinder 410 includes a main body 412 and a second protrusion 414 located at one end of the main body 412, as shown in fig. 4, the main body 412 is located at one side of the bottom plate 101, a portion of the second protrusion 414 passes through the second through hole 111 and is located at the other side of the bottom plate 101, the second protrusion 414 is provided with a second external thread 4141, as shown in fig. 14, and the second locking member 430 is provided with a second threaded hole 431 matching the second external thread 4141.

In this arrangement, the second locking member 430 is screwed with the second protrusion 414, so that the second locking member 430 is more convenient to assemble and disassemble.

As shown in fig. 15, 16 and 17, in another possible design, the end of the cylinder 410 near the second locking member 430 is provided with a third threaded hole 4142, and the second locking member 430 is provided with a third external thread 432 that mates with the third threaded hole 4142.

The mounting hole 411 is provided in the barrel 410, and the mounting hole 411 includes a first section 4111 with a small aperture and a second section 4112 with a large aperture, and in fig. 16, the first section 4111 is located on a side of the second section 4112 close to the cover 200. The connecting piece for fixing the box assembly and the electric device comprises a connecting portion and a fixing portion, wherein the connecting portion is connected with the fixing portion, the outer diameter of the connecting portion is smaller than that of the fixing portion, the connecting portion penetrates through the second section 4112 and the first section 4111 and then stretches out of the mounting hole 411, and the outer diameter of the fixing portion is larger than the inner diameter of the first section 4111, so that the fixing portion is abutted to a step surface 4113 formed between the first section 4111 and the second section 4112.

To facilitate the provision of the third threaded hole 4142, the first segment 4111 is reduced in size in the Z-axis direction, while the second segment 4112 is closer to the cover 200 in the Z-axis direction, and the third threaded hole 4142 is located on a side of the second segment 4112 away from the first segment 4111. Since the distance between the second segment 4112 and the cover 200 is closer, the distance between the step surface 4113 and the cover 200 is closer, and the connecting portion may also extend out of the cover 200 with smaller dimension in the Z-axis direction, that is, the box assembly may be fixed with the electrical device by the connecting member that is shorter in the Z-axis direction.

In this arrangement, a portion of the second locking member 430 protrudes into the third screw hole 4142, thereby reducing the length of the portion of the second locking member 430 that leaks outside the cylinder 410. In addition, since the second locking member 430 is provided with the third external thread 432, if the connection between the second locking member 430 and the cylinder 410 is to be increased, the radial length (the dimension along the Z-axis direction) of the third threaded hole 4142 can be made longer, so that the locking range of the second locking member 430 and the cylinder 410 is larger, the connection is more stable, and the length of the second locking member 430 leaking out of the bottom guard 110 at the side far from the cover 200 is not increased.

As shown in fig. 4 and 13, in one possible design, the base plate 101 includes a backplate 110 and a cooling structure 140, the cooling structure 140 being located on a side of the backplate 110 facing the cover 200, in which arrangement the second seal 130 is located between the cylinder 410 and the backplate 110.

The cooling structure 140 is used to enhance the cooling effect of the case 100, and illustratively, as shown in fig. 4 and 13, the cooling structure 140 includes a first layer plate 141 and a second layer plate 142, and a cooling chamber is formed between the first layer plate 141 and the second layer plate 142 for providing a receiving space for a cooling liquid. The bottom guard 110 is located on a side of the second layer 142 away from the cover 200, and the first layer 141 is located on a side of the second layer 142 closer to the cover 200.

The bottom guard 110 protects the cooling structure 140 in order to provide enhanced protection to the inside structure of the tank 100.

As shown in fig. 4, in order to improve the sealing performance between the cylinder 410 and the cooling structure 140, in one arrangement, the tank assembly further includes a third sealing member 150, the third sealing member 150 is located between the cooling structure 140 and the bottom plate 101, and the third sealing member 150 is disposed around the outer periphery of the cylinder 410.

As shown in fig. 13, the first layer 141 and the second layer 142 are provided with a third through hole 143, the third through hole 143 is communicated with the second through hole 111, the aperture of the third through hole 143 is larger than that of the second through hole 111, as shown in fig. 4, the bottom of the main body 412 in the cylinder 410 passes through the third through hole 143 to be abutted against the bottom guard plate 110, the second protruding part 414 passes through the second through hole 111 to protrude to one side of the bottom guard plate 110 far away from the second layer 142, and the second locking part 430 is screwed on the second protruding part 414, so that the main body 412 and the second locking part 430 clamp the bottom guard plate 110 at two sides of the bottom guard plate 110, thereby connecting the cylinder 410 with the bottom guard plate 110.

The third seal 150 is specifically disposed between the second laminate 142 and the bottom shield 110. The third sealing member 150 may improve sealing performance between the water cooling structure and the cylinder 410.

As shown in fig. 1, in the related art, two sealing rings 5 are disposed on the middle sleeve 2, one sealing ring 5 is located between the middle sleeve 2 and the bottom guard plate 110, and the other sealing ring 5 is located between the middle sleeve 2 and the water cooling plate 9, because two sealing rings 5 are required to be disposed, the width of the portion structure of the middle sleeve 2 located between the water cooling plate 9 and the bottom guard plate 110 is greater than the width of the cross beam 310, and thus, after the battery module is placed in the box 100, the portion structure of the middle sleeve 2 is located below the edge area of the battery module, so that when the battery module shakes relative to the box 100, the area of the battery module opposite to the middle sleeve 2 is prone to stress concentration, and damage is prone to occur.

In the mounting assembly 400 provided in this embodiment, only the second sealing member 130 is required to be disposed between the second layer plate 142 and the bottom protecting plate 110 in the cylinder 410, and the third sealing member 150 is provided to seal the second layer plate 142, the bottom protecting plate 110 and the cylinder 410, so that the size of the cylinder 410 in the X-axis direction can be reduced, and the difference between the size of the cylinder 410 and the size of the partition beam 300 in the X-axis direction is smaller, so that the cylinder 410 is not located below the battery module, and the problem of stress concentration of the battery module is relieved to a certain extent.

As shown in fig. 18, in order to improve the sealing performance between the cylinder 410 and the cooling structure 140, in another arrangement, the cylinder 410 is welded to the cooling structure 140. Specifically, the barrel 410 is welded to the first layer 141, and the barrel 410 is welded to the second layer 142, in this arrangement, on one hand, only the second sealing member 130 is required to be disposed on the barrel 410, and the barrel 410, the first layer 141 and the second layer 142 are sealed by welding, so that the size of the barrel 410 in the X-axis direction can be reduced, and the difference between the size of the barrel 410 and the size of the separation beam 300 in the X-axis direction is smaller, so that the barrel 410 is not located below the battery module, and the problem of stress concentration of the battery module is relieved to a certain extent. On the other hand, the third sealing member 150 is not required in this arrangement, and the assembly process of the sealing member is reduced.

In a specific implementation manner of this embodiment of the present application, the box assembly includes a box 100, a cover 200, a separation beam 300 and a mounting assembly 400, where the box 100 includes a frame and a bottom plate 101 disposed at the bottom of the frame, the frame has a top and a bottom along the Z-axis direction, the cover 200 is covered on the top of the frame, and the frame, the bottom plate 101 and the cover 200 enclose to form a containing space. The partition beam 300 includes a cross member 310 and a side member 320, the cross member 310 being disposed in the Y direction and the side member 320 being disposed in the X direction. The cross beam 310 and the longitudinal beam 320 are fixedly connected with the box body 100, specifically can be fixedly connected with a frame, and can also be fixedly connected with the bottom plate 101. The bottom plate 101 includes a bottom shield 110 and a cooling structure 140 stacked in the Z-axis direction, and the cooling structure 140 includes a first layer plate 141 and a second layer plate 142, and a cooling chamber is formed between the first layer plate 141 and the second layer plate 142 for providing a receiving space for a cooling liquid. The bottom guard 110 is located on a side of the second layer 142 away from the cover 200, and the first layer 141 is located on a side of the second layer 142 closer to the cover 200. A mounting assembly 400 is provided on the cross beam 310.

Mounting assembly 400 is comprised of barrel 410, first retaining member 420 and second retaining member 430, barrel 410 and cross member 310 being an integrally formed structure, and manufactured by an integral molding process. The cover 200 is provided with a first through hole 210 penetrating in the Z-axis direction, the bottom plate 101 is provided with a second through hole 111 penetrating in the Z-axis direction, the second through hole 111 is provided on the bottom guard plate 110, the first layer plate 141 and the second layer plate 142 are provided with a third through hole 143 penetrating in the first layer plate 141 and the second layer plate 142, and the aperture of the third through hole 143 is larger than that of the second through hole 111. The cylinder 410 includes a first protrusion 413, a body portion 412 and a second protrusion 414 in sequence in the Z direction, the first protrusion 413 is provided with a first external screw thread 4131, the first locking member 420 is provided with a first screw hole 421 matching the first external screw thread 4131, the second protrusion 414 is provided with a second external screw thread 4141, the second locking member 430 is provided with a second screw hole 431 matching the second external screw thread 4141, an integral structure of the cylinder 410 and the cross member 310 is located between the cover 200 and the first laminate 141, the first protrusion 413 protrudes to a side of the cover 200 away from the case 100 through the first through hole 210, and the first locking member 420 is screwed on the first protrusion 413 such that the body portion 412 and the first locking member 420 clamp the cover 200 at both sides of the cover 200, thereby connecting the cylinder 410 and the cover 200. The bottom of the body 412 passes through the third through hole 143 to be abutted against the bottom guard plate 110, the second protrusion 414 passes through the second through hole 111 to protrude to a side of the bottom guard plate 110 away from the second laminate 142, and the second locking member 430 is screwed on the second protrusion 414, so that the body 412 and the second locking member 430 clamp the bottom guard plate 110 at both sides of the bottom guard plate 110, thereby connecting the cylinder 410 with the bottom guard plate 110.

The case assembly further includes a plurality of seals, the first seal 120 is disposed between the body portion 412 and the cover 200, the second seal 130 is disposed between the body portion 412 and the bottom shield 110, the third seal 150 is disposed between the second layer plate 142 and the bottom shield 110, and the third seal 150 is disposed around the periphery of the region of the body portion 412 between the second layer plate 142 and the bottom shield 110, and the third seal 150 is in contact with the body portion 412.

As shown in fig. 1, in the related art, since the mount assembly 400 includes a large number of sleeves, there are many areas to be sealed, and in fig. 1, sealing rings 5 are provided between the middle sleeve 2 and the bottom guard 110, between the middle sleeve 2 and the water cooling plate 9, between the middle sleeve 2 and the adapter sleeve 4, and between the adapter sleeve 4 and the cover 7, and the sealing rings 5 are provided at least in five places. As shown in fig. 4, in the mounting assembly 400 provided in the embodiment of the present application, at most, the first sealing member 120, the second sealing member 130, and the third sealing member 150 are provided, so that the sealing interface is reduced to at most three places.

A second aspect of embodiments of the present application provides a battery, comprising: a tank assembly according to any one of the preceding claims.

The battery comprises the box assembly, so that the battery at least comprises all beneficial effects of the box assembly, and the detailed description is omitted.

In one embodiment, a battery includes a case assembly and a battery cell accommodated in an accommodating unit of the case assembly.

In the battery, a plurality of battery monomers can be connected in series or in parallel or in series-parallel connection, and the series-parallel connection means that the plurality of battery monomers are connected in series or in parallel. The plurality of battery monomers can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery monomers is accommodated in the box body; of course, the battery can also be in a form of a battery module formed by connecting a plurality of battery monomers in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole body and accommodating the whole body in the box body. The battery may further include other structures, for example, a bus member for making electrical connection between the plurality of battery cells.

Wherein each battery cell may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped.

A third aspect of the embodiments of the present application provides an electric device, which includes the battery in the above embodiments, where the battery is used to provide electric energy.

The power utilization device comprises the battery, so that the power utilization device has at least all the beneficial effects of the battery and is not repeated herein.

The power device may be, but is not limited to, a cell phone, tablet, notebook computer, electric toy, electric tool, battery car, electric car, ship, spacecraft, etc. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiments will take an electric device according to an embodiment of the present application as an example of a vehicle. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like. The interior of the vehicle is provided with a battery, which may be provided at the bottom or at the head or at the tail of the vehicle. The battery may be used for power supply of the vehicle, for example, the battery may be used as an operating power source of the vehicle. The vehicle may also include a controller and a motor, the controller being configured to control the battery to power the motor, for example, for operating power requirements during start-up, navigation, and travel of the vehicle.

In some embodiments of the present application, the battery may be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. A tank assembly, comprising:

The box body is provided with a bottom plate;

the cover body is matched with the box body to form a containing space;

the separation beam is arranged in the accommodating space to separate the accommodating space into a plurality of accommodating units;

the mounting assembly comprises a cylinder body, a first locking piece and a second locking piece, wherein the cylinder body and the separation beam are of an integrated structure, the first locking piece is connected with the cover body and the cylinder body, and the second locking piece is connected with the bottom plate and the cylinder body; the mounting assembly is provided with a mounting hole, and the mounting hole penetrates through the first locking piece, the cylinder body and the second locking piece.

2. The tank assembly of claim 1, further comprising a first seal disposed between the cover and the barrel.

3. The housing assembly of claim 1, wherein the cover is provided with a first through hole, the cylinder includes a main body portion and a first protrusion at one end of the main body portion, the main body portion is located at one side of the cover, a portion of the first protrusion passes through the first through hole and is located at the other side of the cover, the first protrusion is provided with a first external thread, and the first locking member is provided with a first threaded hole matched with the first external thread.

4. The tank assembly of claim 1, further comprising a second seal disposed between the cartridge and the base plate.

5. The tank assembly of claim 1, wherein the base plate includes a backplate and a cooling structure on a side of the backplate facing the cover, the tank assembly further comprising a third seal between the cooling structure and the base plate, and the third seal is disposed around the periphery of the cylinder.

6. The tank assembly of claim 1, wherein the base plate includes a bottom shield and a cooling structure, the cooling structure being located on a side of the bottom shield facing the cover, the cartridge being welded to the cooling structure.

7. The cabinet assembly as claimed in any one of claims 1 to 6, wherein a maximum dimension of the first locking member in a width direction of the partition beam is less than or equal to a maximum dimension of the partition beam.

8. The cabinet assembly as claimed in any one of claims 1 to 6, wherein the bottom plate has a second through hole, the cylinder includes a main body portion and a second protrusion at one end of the main body portion, the main body portion is located at one side of the bottom plate, a portion of the second protrusion passes through the second through hole and is located at the other side of the bottom plate, the second protrusion is provided with a second external screw thread, and the second locking member is provided with a second screw hole matched with the second external screw thread.

9. The cabinet assembly as claimed in any one of claims 1-6, wherein an end of the cylinder adjacent to the second locking member is provided with a third screw hole, and the second locking member is provided with a third external screw thread matched with the third screw hole.

10. A cabinet assembly according to any one of claims 1 to 6, wherein a plurality of dividing beams are provided in the receiving space, at least one dividing beam being provided with the mounting assembly.

11. The cabinet assembly as claimed in claim 10, wherein a plurality of the mounting assemblies are provided at intervals on the partition beam in a length direction of the partition beam.

12. The cabinet assembly of claim 11, wherein a side of the dividing beam adjacent to the cover is provided with a relief area.

13. A battery, comprising: a tank assembly as claimed in any one of claims 1 to 12.

14. An electrical device comprising the battery of claim 13 for providing electrical energy.