CN216120549U

CN216120549U - Battery box

Info

Publication number: CN216120549U
Application number: CN202122634390.6U
Authority: CN
Inventors: 苗慧敏; 陈智明; 可庆朋
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-22
Anticipated expiration: 2031-10-29
Also published as: WO2023071083A1

Abstract

The application discloses battery box. The battery box includes: the box body is used for accommodating the battery cell and provided with a top plate and a bottom plate which is arranged opposite to the top plate, and the bottom plate is used for supporting the battery cell from the lower part of the battery cell; at least one staple bolt, the staple bolt encircles the box, and the staple bolt includes upper portion and the lower part that sets up relatively with upper portion, and upper portion is located the roof and keeps away from one side of bottom plate and with the roof butt, and the lower part is located the bottom plate and keeps away from one side of roof and with the bottom plate butt. The battery box of this application embodiment, after the bottom plate of box holding electricity core and box supported electric core from the below of electricity core, the lower part of accessible staple bolt supported the box from the below of box, and then avoided the box to produce the deformation in the direction of gravity to promote battery box's life.

Description

Battery box

Technical Field

The application relates to the technical field of batteries, in particular to a battery box.

Background

At present, when a battery cell is carried or used, the battery cell is often placed in a battery box in order to avoid the battery cell from colliding with other objects to cause damage to the battery cell. So, even when the collision takes place, also be located the outside battery box of electricity core and collide with other objects to reduce the atress of electricity core, in order to avoid electric core to damage.

However, in the battery box of the related art, after the battery cell is accommodated, the box body of the battery box is easily deformed in the gravity direction due to the heavy weight of the battery cell, so that the service life of the battery box is shortened.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the application provides a battery box, behind battery box holding electricity core, can avoid the box of battery box to produce the deformation in the direction of gravity to promote the life of battery box.

The application provides a battery box, includes: the box body is used for accommodating the battery cell and provided with a top plate and a bottom plate which is arranged opposite to the top plate, and the bottom plate is used for supporting the battery cell from the lower part of the battery cell; at least one staple bolt, the staple bolt encircles the box, and the staple bolt includes upper portion and the lower part that sets up relatively with upper portion, and upper portion is located the roof and keeps away from one side of bottom plate and with the roof butt, and the lower part is located the bottom plate and keeps away from one side of roof and with the bottom plate butt.

In the technical scheme of the embodiment of the application, the box body is used for accommodating the battery cell and is provided with a top plate and a bottom plate which is arranged opposite to the top plate, and the bottom plate is used for supporting the battery cell from the lower part of the battery cell; at least one staple bolt, the staple bolt encircles the box, and the staple bolt includes upper portion and the lower part that sets up relatively with upper portion, and upper portion is located the roof and keeps away from one side of bottom plate and with the roof butt, and the lower part is located the bottom plate and keeps away from one side of roof and with the bottom plate butt. Such design, the accessible staple bolt encircles the upper portion of box and staple bolt and is located the roof and keeps away from one side of bottom plate, and with the roof butt, and the lower part of staple bolt is located the bottom plate and keeps away from one side of roof, and with the bottom plate butt, in order to set up the staple bolt on the box, and after the bottom plate of box holding electricity core and box supported electric core from the below of electricity core, the lower part of accessible staple bolt supported the box from the below of box, and then avoid the box to produce the deformation in the direction of gravity, in order to promote the life of battery box.

In some embodiments, the hoop further includes a first connecting portion and a second connecting portion, the upper portion includes a first sub-body and a second sub-body, one end of the first sub-body is connected to the lower portion via the first connecting portion, one end of the second sub-body is connected to the lower portion via the second connecting portion, and one end of the first sub-body, which is far away from the first connecting portion, is abutted to and fixed to one end of the second sub-body, which is far away from the second connecting portion. Because the one end of first components of a whole that can function independently links to each other with the lower part via first connecting portion, and the one end of second components of a whole that can function independently links to each other with the lower part via the second connecting portion, consequently, after keeping away from the one end of first connecting portion with the one end butt of second components of a whole that can function independently and keeping away from the second connecting portion with first components of a whole that can function independently and fixed, can fix the staple bolt on the box steadily.

In some embodiments, the upper portion further includes a first fixing portion extending from one end of the first split body away from the first connecting portion in a direction away from the box body, and a second fixing portion extending from one end of the second split body away from the second connecting portion in a direction away from the box body, and the first fixing portion and the second fixing portion are abutted and fixed. The first fixing part and the second fixing part are arranged and are abutted and fixed, so that the stability of the first split body and the second split body in the fixing process can be improved.

In some embodiments, the battery box further comprises: a first fastener penetrating through the first fixing part and the second fixing part and fixing the first fixing part and the second fixing part. Therefore, the stability of the first fixing part and the second fixing part in the fixing process can be further improved, and the stability of the first split body and the second split body in the fixing process can be further improved.

In some embodiments, the anchor ear is integrally formed. Therefore, the assembly cost of the battery box during assembly can be reduced.

In some embodiments, the case includes an upper cover having a top plate, and a lower case fixed to the lower case having a bottom plate. So, when arranging electric core in the box, can separate upper cover and lower box earlier to arrange electric core in the back between upper cover and the lower box, be fixed in lower box with the upper cover again, so that box holding electricity core.

In some embodiments, the hoop further comprises a third connecting part, a fourth connecting part, a fifth connecting part and a sixth connecting part, wherein the third connecting part is fixed with the fifth connecting part, and the fourth connecting part is fixed with the sixth connecting part; the third connecting part and the fourth connecting part are oppositely arranged at two ends of the upper part, and the third connecting part, the upper part and the fourth connecting part are sequentially connected; the fifth connecting part and the sixth connecting part are oppositely arranged at two ends of the lower part, and the fifth connecting part, the lower part and the sixth connecting part are sequentially connected. Because the third connecting part, the upper part and the fourth connecting part are sequentially connected, and the fifth connecting part, the lower part and the sixth connecting part are sequentially connected, the upper part and the lower part of the hoop can be stably fixed on the box body after the third connecting part and the fifth connecting part are fixed and the fourth connecting part and the sixth connecting part are fixed.

In some embodiments, the hoop further includes a first extending portion extending from one end of the third connecting portion away from the upper portion in a bending manner in a direction away from the fourth connecting portion, and a second extending portion extending from one end of the fifth connecting portion away from the lower portion in a bending manner in a direction away from the sixth connecting portion; the first extension part is fixed with the second extension part. Because the first extending part is connected with the third connecting part and the second extending part is connected with the fifth connecting part, the stability of the third connecting part and the fifth connecting part can be improved when the first extending part and the second extending part are fixed.

In some embodiments, the box body comprises an upper cover and a lower box body, wherein the upper cover is provided with a top plate and a first flange fixed with the top plate, the lower box body is provided with a bottom plate and a second flange fixed with the bottom plate, and the first flange is fixed with the second flange; the first extending part is positioned on one side of the first flange, which is far away from the second flange, and the second extending part is positioned on one side of the second flange, which is far away from the first flange; the first extending part and the second extending part are fixed and clamp the first flange and the second flange. The first extending part and the second extending part clamp the first flange and the second flange and are fixed, so that the stability of the first flange and the second flange in the fixing process and the sealing performance between the first flange and the second flange can be improved.

In some embodiments, the battery box further comprises: a second fastener; the second fastener penetrates through the first extension part, the first flange, the second flange and the second extension part in sequence and fixes the first extension part and the second extension part. Thus, the stability of the first flange and the second flange when the first flange and the second flange are fixed and the sealing performance between the first flange and the second flange can be further increased.

In some embodiments, the first extension and/or the second extension are provided with a mounting block for fixing with the mount. So, when needs are fixed battery box and carry, the installation piece of accessible staple bolt is fixed with carry to when battery box and carry are fixed, increase the holding power of the lower part of staple bolt to the box.

In some embodiments, the surface of the box body is provided with a groove, and at least part of the hoop is clamped in the groove. So, after setting up the staple bolt on the box, can avoid taking place relative movement between staple bolt and the box.

In some embodiments, the grooves include a first groove provided at the top plate and a second groove provided at the bottom plate, the first groove and the second groove being recessed in a direction to approach each other; at least part of the upper part is clamped in the first groove; at least part of the lower part is clamped in the second groove.

In some embodiments, the box body is also provided with two side plates which are oppositely arranged and are connected with the top plate and the bottom plate; the grooves comprise two third grooves which are respectively positioned on one side plate and are sunken along the mutually approaching direction; the hoop is clamped in the two third grooves.

In some embodiments, the battery box further comprises: a cushion pad; the shape of the box body is cuboid or similar cuboid; the buffer cushion is positioned between the box body and the hoop and at the corner of the box body. Therefore, friction between the hoop and the corner of the box body can be avoided, and the service lives of the hoop and the box body are prolonged.

In some embodiments, the cross-sectional shape of the anchor ear is rectangular, i-beam shaped, or square frame shaped. So, can promote the structural strength of staple bolt, further avoid behind box holding electricity core, the box produces the deformation in the direction of gravity.

In some embodiments, the structural strength of the lower portion is greater than the structural strength of the upper portion. Therefore, when the lower part is utilized to support the box body from the lower part of the box body, the lower part resistance to damage can be increased, and the service life of the hoop is prolonged.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

fig. 1 is a schematic structural diagram of a battery box according to some embodiments of the present application;

FIG. 2 is a schematic diagram of an exploded view of a battery compartment according to some embodiments of the present disclosure;

fig. 3 is a schematic structural diagram of a battery box according to some embodiments of the present application;

fig. 4 is an exploded view of a battery box according to some embodiments of the present disclosure;

FIG. 5 is a partial cross-sectional view of a battery case provided in accordance with some embodiments of the present application;

in the drawings, the drawings are not necessarily to scale.

The reference numbers in the detailed description are as follows:

the box body 100, the top plate 111, the bottom plate 112, the side plate 113, the upper cover 121, the lower box body 122, the first flange 131, the second flange 132, the second mounting part 141, the groove 150, the first groove 151, and the third groove 152;

the hoop 200, the upper portion 210, the first sub-body 211, the second sub-body 212, the lower portion 220, the first connecting portion 231, the second connecting portion 232, the first fixing portion 233, the third connecting portion 241, the fourth connecting portion 242, the fifth connecting portion 243, the sixth connecting portion 244, the first extending portion 245, the second extending portion 246, the third extending portion 247 and the fourth extending portion 248.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

With the development of scientific technology, new energy technology is continuously developed, and particularly, battery technology is greatly developed. The battery includes electric core and is used for the battery box of holding electric core. The battery box can avoid the collision of the battery cell and other objects to cause the damage of the battery cell when the battery cell is carried or used.

The inventor notices that the battery box is easy to deform in the gravity direction due to the heavier weight of the battery cell after the battery cell is accommodated in the battery box, so that the service life of the battery box is shortened.

In order to prolong the service life of the battery box, the applicant researches and discovers that the box body can be supported from the lower part of the box body by utilizing the hoop after the box body of the battery box contains the battery cell, so that the box body is prevented from deforming in the gravity direction, and the service life of the box body is prolonged.

Based on the above consideration, in order to promote the life of battery box, the inventor is through deep research, a battery box has been designed, the upper portion that encircles box and staple bolt through the staple bolt is located the one side that the box bottom plate was kept away from to the box roof, and with the roof butt, and the lower part of staple bolt is located the one side that the box roof was kept away from to the box bottom plate, and with the bottom plate butt, in order to set up the staple bolt on the box, and after the bottom plate at box holding electric core and box supported electric core from the below of electric core, the lower part of accessible staple bolt supported the box from the below of box, and then avoid the box to produce the deformation in the direction of gravity, in order to promote the life of battery box.

The battery box disclosed in the embodiments of the present application may be, but is not limited to, used for protecting the battery cells when the battery cells are handled/used. The battery cell accommodated in the battery box can be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell can be in a cylinder, a flat body, a cuboid or other shapes and the like.

In addition, in order to make the outer wall face of electric core can be better with the internal face laminating of box in order to avoid electric core and the internal face of box to bump to better protection electric core, the shape looks adaptation of the cavity that is used for holding electric core and electric core in the box. Such as: in an embodiment, the electrical core is rectangular, the chamber of the box for accommodating the electrical core is also rectangular, and the dimensions of the chamber and the electrical core are the same.

See fig. 1-4. According to some embodiments of the present application, there is provided a battery box including: the battery pack comprises a box body 100, a battery cell, a first connecting piece and a second connecting piece, wherein the box body 100 is used for accommodating the battery cell, the box body 100 is provided with a top plate 111 and a bottom plate 112 arranged opposite to the top plate 111, and the bottom plate 112 is used for supporting the battery cell from the lower part of the battery cell; the hoop 200 comprises an upper part 210 and a lower part 220 arranged opposite to the upper part 210, the upper part 210 is positioned on one side of the top plate 111 far away from the bottom plate 112 and is abutted to the top plate 111, and the lower part 220 is positioned on one side of the bottom plate 112 far away from the top plate 111 and is abutted to the bottom plate 112.

The case 100 is a box having a chamber for placing the battery cells. The shape of the box 100 may be adjusted according to the shape of the battery cell, for example: when the cell is rectangular, the case 100 is also rectangular. In order to reduce the weight of the box 100, the box 100 may be made of sheet metal, such as iron, aluminum, or metal alloy. In addition, in order to further reduce the weight of the case 100, the material of the case 100 may be thermoplastic, fiber reinforced material, thermosetting composite material, or the like, and the molding method may be injection molding, mold pressing, or the like. It should be noted that, when the box body 100 is formed by injection molding or compression molding, the production efficiency of the box body 100 can be improved.

The top plate 111 and the bottom plate 112 of the case 100 are: after the battery cell is accommodated in the box 100, the box 100 includes two plate-like objects arranged in sequence from top to bottom, and the battery cell is located between the top plate 111 and the bottom plate 112. That is, after the battery cell is accommodated in the case 100, the top plate 111 and the bottom plate 112 are sequentially disposed from top to bottom, and the battery cell is supported by the bottom plate 112 from the lower side of the battery cell.

The hoop 200 is a rigid member. The anchor ear 200 may be made of metal, such as iron, aluminum, metal alloy, etc., and the forming method may be extrusion molding, etc. It should be noted that, when the hoop 200 is formed by extrusion, the production efficiency of the hoop 200 can be improved.

The hoop 200 surrounds the box 100, and the upper portion 210 of the hoop 200 abuts against the top plate 111 and the lower portion 220 of the hoop 200 abuts against the bottom plate 112. After the battery cell is accommodated in the box 100 and the bottom plate 112 of the box 100 supports the battery cell from the lower side of the battery cell, the lower part 120 of the hoop 200 supports the box 100 from the lower side of the box 100, so that the box 100 is prevented from being deformed in the gravity direction, and the service life of the battery box is prolonged.

In one embodiment, the number of the hoop 200 is two. In another embodiment, the number of the hoop 200 is one. It should be noted that the number of the anchor ears 200 is not limited in the present application.

See fig. 1 and 2. According to some embodiments of the present disclosure, the hoop 200 further includes a first connection portion 231 and a second connection portion 232, the upper portion 210 includes a first division 211 and a second division 212, one end of the first division 211 is connected to the lower portion 220 via the first connection portion 231, one end of the second division 212 is connected to the lower portion 220 via the second connection portion 232, and one end of the first division 211, which is far away from the first connection portion 231, is abutted against and fixed to one end of the second division 212, which is far away from the second connection portion 232.

One end of the first body 211 is connected to the lower portion 220 via a first connection portion 231, that is, two ends of the first connection portion 231 are respectively connected to one of the one end of the first body 211 and the lower portion 220; one end of the second section 212 is connected to the lower portion 220 via a second connection portion 232, that is, two ends of the second connection portion 232 are respectively connected to one of the second section 212 and the lower portion 220; in this manner, first section 211 and second section 212 may be connected to lower portion 220.

At this time, since both the first and

second segments

211 and 212 are connected to the lower portion 220, the end of the first segment 211 remote from the first connection portion 231 and the end of the second segment 212 remote from the second connection portion 232 are abutted and fixed, and then the anchor ear 200 can be stably fixed to the box 100.

Continuing with fig. 1 and 2. According to some embodiments of the present disclosure, the upper portion 210 further includes a first fixing portion 233 extending from an end of the first split body 211 away from the first connection portion 231 in a direction away from the box body 100, and a second fixing portion (not shown) extending from an end of the second split body 212 away from the second connection portion 232 in a direction away from the box body 100, wherein the first fixing portion 233 abuts against and is fixed to the second fixing portion.

By providing the first fixing portion 233 connected to the first section 211 and the second fixing portion connected to the second section 212, and abutting and fixing the first fixing portion 233 and the second fixing portion, stability when the first section 211 and the second section 212 are fixed can be increased.

Continuing with fig. 1 and 2. According to some embodiments of the application, the battery box further comprises: a first fastener (not shown) penetrating the first fixing portion 233 and the second fixing portion and fixing the first fixing portion 233 and the second fixing portion.

Thus, the stability of the first fixing portion 233 and the second fixing portion when they are fixed can be further increased, and the stability of the first body 211 and the second body 212 when they are fixed can be further increased. Specifically, the first fastening member may be a fastening member having a bolt and a nut, and one end of the bolt passes through the first fixing portion 233 and the second fixing portion and is fixed to the nut.

In other modified embodiments, the first fastening member may not be provided, as long as the first fixing portion 233 and the second fixing portion can be fixed; such as: in one embodiment, the first fixing portion 233 and the second fixing portion are fixed by welding.

Continuing with fig. 1 and 2. According to some embodiments of the present application, the hoop 200 is integrally formed.

Thus, when the hoop 200 is fixed on the box 100, only the first sub-body 211 and the second sub-body 212 need to be fixed together, so that the assembling steps of the battery box during assembling are reduced, and the assembling cost of the battery box during assembling is reduced.

Continuing with fig. 1 and 2. According to some embodiments of the present application, the case 100 includes an upper cover 121 and a lower case 122, the upper cover 121 having a top plate 111, the upper cover 121 being fixed to the lower case 122, the lower case 122 having a bottom plate 112.

So, when arranging electric core in box 100, can separate upper cover 121 and lower box 122 earlier to arrange electric core in the back between upper cover 121 and lower box 122, be fixed in lower box 122 with upper cover 121 again, so that box 100 holding electric core.

See fig. 3 and 4. According to some embodiments of the present application, the hoop 200 further includes a third connecting portion 241, a fourth connecting portion 242, a fifth connecting portion 243 and a sixth connecting portion 244, the third connecting portion 241 is fixed with the fifth connecting portion 243, and the fourth connecting portion 242 is fixed with the sixth connecting portion 244; the third connecting portion 241 and the fourth connecting portion 242 are oppositely arranged at two ends of the upper portion 210, and the third connecting portion 241, the upper portion 210 and the fourth connecting portion 242 are sequentially connected; the fifth connecting portion 243 and the sixth connecting portion 244 are disposed at both ends of the lower portion 220 to face each other, and the fifth connecting portion 243, the lower portion 220, and the sixth connecting portion 244 are connected in this order.

The third connecting portion 241, the upper portion 210 and the fourth connecting portion 242 are sequentially connected, that is, two ends of the upper portion 210 are respectively connected to one of one end of the third connecting portion 241 and one end of the fourth connecting portion 242; the fifth connecting portion 243, the lower portion 220 and the sixth connecting portion 244 are sequentially connected, that is, both ends of the lower portion 220 are respectively connected to one of one end of the fifth connecting portion 243 and one end of the sixth connecting portion 244.

Since the third connecting portion 241, the upper portion 210 and the fourth connecting portion 242 are sequentially connected and the fifth connecting portion 243, the lower portion 220 and the sixth connecting portion 244 are sequentially connected, the upper portion 210 and the lower portion 220 of the hoop 200 can be stably fixed to the box 100 after the third connecting portion 241 and the fifth connecting portion 243 are fixed and the fourth connecting portion 242 and the sixth connecting portion 244 are fixed.

With continued reference to fig. 3 and 4. According to some embodiments of the present application, the hoop 200 further includes a first extension portion 245 extending from one end of the third connecting portion 241 away from the upper portion 210 in a direction away from the fourth connecting portion 242, and a second extension portion 246 extending from one end of the fifth connecting portion 243 away from the lower portion 220 in a direction away from the sixth connecting portion 244; the first extension 245 is fixed with the second extension 246.

Since the first extension portion 245 is connected to the third connecting portion 241 and the second extension portion 246 is connected to the fifth connecting portion 243, the stability of the third connecting portion 241 fixed to the fifth connecting portion 243 can be increased by fixing the first extension portion 245 to the second extension portion 246.

In one embodiment, the hoop 200 further includes a third extending portion 247 bent and extended from an end of the fourth connecting portion 242 away from the upper portion 210 in a direction away from the third connecting portion 241, and a fourth extending portion 248 bent and extended from an end of the sixth connecting portion 244 away from the lower portion 220 in a direction away from the fifth connecting portion 243; the third extension 247 is fixed with the fourth extension 248.

Since the third extension portion 247 is connected to the fourth connection portion 242 and the fourth extension portion 248 is connected to the sixth connection portion 244, the stability of the fourth connection portion 242 fixed to the sixth connection portion 244 can be increased by fixing the third extension portion 247 to the fourth extension portion 248.

With continued reference to fig. 3 and 4, and with concurrent reference to fig. 5. According to some embodiments of the present application, the case 100 includes an upper cover 121 and a lower case 122, the upper cover 121 having a top plate 111 and a first flange 131 fixed to the top plate 111, the lower case 122 having a bottom plate 112 and a second flange 132 fixed to the bottom plate 112, the first flange 131 being fixed to the second flange 132; the first extension 245 is located on the side of the first flange 131 away from the second flange 132, and the second extension 246 is located on the side of the second flange 132 away from the first flange 131; the first extension 245 and the second extension 246 are fixed to each other, and hold the first flange 131 and the second flange 132 therebetween.

The first flange 131 is a flange protruding from the upper cover 121, and the second flange 132 is a flange protruding from the lower case 122. The first flange 131 and the second flange 132 are fixed, so that the upper cover 121 can be fixed on the lower case 122, and the sealing performance between the upper cover 121 and the lower case 122 can be improved.

Since the first extension 245 and the second extension 246 clamp the first flange 131 and the second flange 132 and the first extension 245 and the second extension 246 are fixed, stability when the first flange 131 and the second flange 132 are fixed and sealability between the first flange 131 and the second flange 132 can be increased.

In one embodiment, the hoop 200 is provided with a third extending portion 247 and a fourth extending portion 248, the third extending portion 247 is located on the side of the first flange 131 far from the second flange 132, and the fourth extending portion 248 is located on the side of the second flange 132 far from the first flange 131; the third extension 247 and the fourth extension 248 are fixed and hold the first flange 131 and the second flange 132. As such, the stability when the first flange 131 and the second flange 132 are fixed and the sealability between the first flange 131 and the second flange 132 can be further increased.

With continued reference to fig. 3-5. According to some embodiments of the application, the battery box further comprises: a second fastener (not shown); the second fastening member sequentially penetrates the first extension 245, the first flange 131, the second flange 132, and the second extension 246, and fixes the first extension 245 and the second extension 246.

As such, the stability when the first extension 245 and the second extension 246 are fixed may be further increased, thereby further increasing the stability when the first flange 131 and the second flange 132 are fixed and the sealability between the first flange 131 and the second flange 132. Specifically, the second fastener may be a fastener having a bolt and a nut, and one end of the bolt passes through the first extension 245, the first flange 131, the second flange 132, and the second extension 246 and is fixed with the nut. In addition, the second fastener may be further provided with a spacer interposed between the first extension 245 and the second extension 246, thereby further increasing stability when the first extension 245 and the second extension 246 are fixed.

It should be noted that, in other alternative embodiments, the second fastening member may not be provided, as long as the first extension 245 and the second extension 246 can be fixed; such as: in one embodiment, the first extension 245 and the second extension 246 are fixed by welding.

With continued reference to fig. 3-5. According to some embodiments of the present application, the first extension 245 and/or the second extension 246 are provided with a mounting block for fixation with the mount.

Thus, when the battery box and the mount are required to be fixed, the battery box and the mount can be fixed through the mounting block of the hoop 200, so that the supporting force of the lower part 220 of the hoop 200 on the box body 100 is increased when the battery box and the mount are fixed. In one example, the mounting block is provided with a mounting hole so that the mounting block can be fixed with the mounting piece. In one example, the first extension 245 and the second extension 246 are each provided with a mounting block for securing with a mount.

In an embodiment, when the battery box containing the battery cell is to be fixed to a vehicle, the mounting member is a mounting structure of the vehicle, and the mounting block of the hoop 200 is fixed to the mounting member, so that the supporting force of the lower portion 220 of the hoop 200 on the box 100 can be increased, and the box is further prevented from being deformed.

In addition, the box 100 may also be provided with a first mounting portion (not shown) and/or a second mounting portion 141 for fixing with the mount, the first mounting portion protruding from the outer edge of the first flange 131 in a direction away from the first flange 131, and the second mounting portion 141 protruding from the outer edge of the second flange 132 in a direction away from the second flange 132. In one example, the case 100 is provided with only the second mounting portion 141 and is not provided with the first mounting portion. In yet another example, the case 100 is provided with a first mounting portion and a second mounting portion 141.

With continued reference to fig. 3 and 4. According to some embodiments of the present application, the surface of the box 100 has a groove 150, and at least a portion of the hoop 200 is engaged with the groove 150.

Thus, after the hoop 200 is disposed on the box 100, the relative movement between the hoop 200 and the box 100 can be avoided, and the volume of the hoop 200 protruding out of the box 100 can be reduced.

With continued reference to fig. 3 and 4. According to some embodiments of the present application, the grooves 150 include a first groove 151 disposed at the top plate 111, and a second groove (not shown in the drawings) disposed at the bottom plate 112, the first groove 151 and the second groove being recessed in a direction approaching each other; at least part of the upper portion 210 is clamped in the first groove 151; at least a portion of the lower portion 220 is captured within the second recess. Thus, after the hoop 200 is arranged on the box 100, the relative movement between the hoop 200 and the box 100 is avoided.

With continued reference to fig. 3 and 4. According to some embodiments of the present application, the box 100 further has two side panels 113 disposed opposite to each other and connected to the top panel 111 and the bottom panel 112; the grooves 150 include two third grooves 152 that are respectively located on the one side plate 113 and are recessed in a direction to approach each other; the hoop 100 is clamped in the two third grooves 152. Thus, after the hoop 200 is disposed on the box 100, the hoop 200 and the box 100 are prevented from moving relatively.

With continued reference to fig. 3 and 4. According to some embodiments of the application, the battery box further comprises: a cushion (not shown); the box body 100 is in a cuboid or quasi-cuboid shape; the cushion is located between the cabinet 100 and the hoop 200 at the corner of the cabinet 100.

Therefore, the friction between the hoop 200 and the corner of the box 100 can be avoided, so as to prolong the service life of the hoop 200 and the box 100. Wherein, the quasi-cuboid is similar to the shape of cuboid, like: in one embodiment, the case 100 is provided with the first flange 131 and the second flange 132, the case 100 excluding the first flange 131 and the second flange 132 has a rectangular parallelepiped shape, and the case 100 is provided with the first flange 131 and the second flange 132, so that the case 100 has a rectangular parallelepiped shape.

In one embodiment, the cushion is a silicone cushion. In another embodiment, the cushion is a foam cushion.

Continuing with fig. 1-4. According to some embodiments of the present application, the cross-sectional shape of the hoop 200 is rectangular, i-beam, or square. Therefore, the structural strength of the hoop 200 can be improved, and the box 100 is further prevented from deforming in the gravity direction after the box 100 accommodates the battery cells. In addition, reinforcing ribs can be arranged on the hoop 200, so that the structural strength of the hoop 100 is further improved.

With continued reference to fig. 3-5. The structural strength of the lower portion 220 is greater than the structural strength of the upper portion 210. Thus, when the lower portion 220 is used to support the box 100 from below the box 100, the lower portion 220 can be more resistant to damage, so as to prolong the service life of the hoop 200. In one embodiment, the cross-sectional area of the lower portion 220 is greater than the cross-sectional area of the upper portion 210, such that the structural strength of the lower portion 220 is greater than the structural strength of the upper portion 210.

According to some embodiments of the present application, referring to fig. 1 and 2, the present application provides a battery box comprising: a box body 100 and an integrally formed hoop 200; the box 100 includes an upper cover 121 and a lower box 122, the upper cover 121 has a top plate 111, the upper cover 121 is fixed to the lower box 122, the lower box 122 has a bottom plate 112; the hoop 200 surrounds the box 100, the hoop 200 comprises an upper part 210 and a lower part 220 opposite to the upper part 210, the upper part 210 is abutted against the top plate 111, and the lower part 220 is abutted against the bottom plate 112; the upper part 210 comprises a first split body 211, a second split body 212, a first fixing part 233 and a second fixing part, and the hoop 200 further comprises a first connecting part 231 connecting the first split body 211 and the lower part 220 and a second connecting part 232 connecting the second split body 212 and the lower part 220; the first fixing portion 233 abuts against and is fixed to the second fixing portion, and the first fastening member fixes the first fixing portion 233 to the second fixing portion.

According to some embodiments of the present application, referring to fig. 3-5, the present application provides a battery box comprising: the box body 100, the hoop 200 and the cushion pad positioned between the box body 100 and the hoop 200; the box body 100 comprises an upper cover 121 and a lower box body 122, wherein the upper cover 121 is provided with a top plate 111 and a first flange 131 fixed with the top plate 111, the lower box body 122 is provided with a bottom plate 112 and a second flange 132 fixed with the bottom plate 112, the first flange 131 is fixed with the second flange 132, and the surface of the box body 100 is also provided with a groove 150 for clamping the hoop 200; the hoop 200 comprises a third connecting part 241, an upper part 210 and a fourth connecting part 242 which are connected in sequence, a fifth connecting part 243, a lower part 220 and a sixth connecting part 244 which are connected in sequence, a first extending part 245 connected with the third connecting part 241 and a second extending part 246 connected with the fifth connecting part 243, wherein the first extending part 245 and/or the second extending part 246 are/is provided with a mounting block used for being fixed with a hanging piece, and the first extending part 245 and the second extending part 246 are fixed by a second fastener.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions 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 solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. A battery box, comprising:

the box body is used for accommodating the battery cell and provided with a top plate and a bottom plate opposite to the top plate, and the bottom plate is used for supporting the battery cell from the lower part of the battery cell;

at least one hoop, the hoop encircles the box, the hoop include upper portion and with the relative lower part that sets up in upper portion, upper portion is located the roof is kept away from one side of bottom plate and with the roof butt, the lower part is located the bottom plate is kept away from one side of roof and with the bottom plate butt.

2. The battery box according to claim 1, wherein the hoop further comprises a first connecting portion and a second connecting portion, the upper portion comprises a first divided body and a second divided body, one end of the first divided body is connected with the lower portion through the first connecting portion, one end of the second divided body is connected with the lower portion through the second connecting portion, and one end of the first divided body, which is far away from the first connecting portion, is abutted against and fixed with one end of the second divided body, which is far away from the second connecting portion.

3. The battery box according to claim 2, wherein the upper portion further includes a first fixing portion extending from an end of the first divided body away from the first connecting portion in a direction away from the box body, and a second fixing portion extending from an end of the second divided body away from the second connecting portion in a direction away from the box body, and the first fixing portion abuts against and is fixed to the second fixing portion.

4. The battery box of claim 3, further comprising: and a first fastener penetrating through the first fixing part and the second fixing part and fixing the first fixing part and the second fixing part.

5. The battery box according to any one of claims 2-4, characterized in that the anchor ear is integrally formed.

6. The battery box according to any one of claims 2 to 4, wherein the box body comprises an upper cover having the top plate and a lower box body having the bottom plate, the upper cover being fixed to the lower box body.

7. The battery box of claim 1, wherein the hoop further comprises a third connecting portion, a fourth connecting portion, a fifth connecting portion and a sixth connecting portion, the third connecting portion is fixed with the fifth connecting portion, and the fourth connecting portion is fixed with the sixth connecting portion; the third connecting part and the fourth connecting part are oppositely arranged at two ends of the upper part, and the third connecting part, the upper part and the fourth connecting part are sequentially connected; the fifth connecting portion and the sixth connecting portion are oppositely arranged at two ends of the lower portion, and the fifth connecting portion, the lower portion and the sixth connecting portion are sequentially connected.

8. The battery box according to claim 7, wherein the anchor ear further comprises a first extending portion extending from one end of the third connecting portion away from the upper portion in a direction away from the fourth connecting portion, and a second extending portion extending from one end of the fifth connecting portion away from the lower portion in a direction away from the sixth connecting portion; the first extension part and the second extension part are fixed.

9. The battery box of claim 8, wherein the box body comprises an upper cover and a lower box body, the upper cover having the top plate and a first flange secured to the top plate, the lower box body having the bottom plate and a second flange secured to the bottom plate, the first flange secured to the second flange; the first extension part is positioned on one side of the first flange, which is far away from the second flange, and the second extension part is positioned on one side of the second flange, which is far away from the first flange; the first extension portion and the second extension portion are fixed and clamp the first flange and the second flange.

10. The battery box of claim 9, further comprising: a second fastener; the second fastening piece penetrates through the first extension part, the first flange, the second flange and the second extension part in sequence and fixes the first extension part and the second extension part.

11. The battery box of claim 9, wherein the first extension and/or the second extension are provided with a mounting block for fixing with a mount.

12. The battery box of claim 1, wherein the surface of the box body is provided with a groove, and at least part of the hoop is clamped in the groove.

13. The battery box according to claim 12, wherein the grooves include a first groove provided in the top plate and a second groove provided in the bottom plate, the first groove and the second groove being recessed in directions approaching each other; at least part of the upper part is clamped in the first groove; at least part of the lower part is clamped in the second groove.

14. The battery box according to claim 12 or 13, wherein the box body further has two side plates disposed opposite to each other and connected to the top plate and the bottom plate; the grooves comprise two third grooves which are respectively positioned on one side plate and are sunken along the mutually approaching direction; the hoop is clamped in the two third grooves.

15. The battery box of claim 1, further comprising: a cushion pad; the box body is in a cuboid or quasi-cuboid shape; the buffer cushion is positioned between the box body and the hoop and at the corner of the box body.

16. The battery box of claim 1, wherein the cross-sectional shape of the hoop is rectangular, i-beam shaped or square frame shaped.

17. The battery box of claim 1, wherein the lower portion has a structural strength greater than the structural strength of the upper portion.