CN215771385U

CN215771385U - Box body with detachable frame and power battery pack

Info

Publication number: CN215771385U
Application number: CN202121776433.8U
Authority: CN
Inventors: 凌和平; 熊永; 刁义伟; 许巍; 黄建兵
Original assignee: BYD Co Ltd
Current assignee: Changzhou Byd Automobile Co ltd; BYD Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-08
Anticipated expiration: 2031-07-30

Abstract

The application provides a frame detachable box and power battery package. The box body comprises a bottom plate and a frame connected to the peripheral side edges of the bottom plate, and the bottom plate and the frame are enclosed to form an accommodating cavity; the frame comprises a first frame and a second frame which are oppositely arranged along a first direction, and a pair of side frames which are oppositely arranged along a second direction, the pair of side frames are respectively connected to the two opposite ends of the first frame and the second frame which correspond to each other in the second direction, and the first direction and the second direction are different and are respectively parallel to the bottom plate; wherein, each side frame includes the side frame that sets gradually along the third direction and can dismantle the side top frame of connecting in the side frame at the bottom of, and the side that the side top frame was kept away from to the side frame is connected in a side that the bottom plate corresponds in the second direction, and the height of the side frame along the third direction is no longer than presetting the height, third direction perpendicular to bottom plate at the bottom of just inclining. The frame of this box can be dismantled, when the box is used for placing battery cell, is favorable to battery cell's maintenance inspection and assembles in groups.

Description

Box body with detachable frame and power battery pack

Technical Field

The application relates to the technical field of battery packs, in particular to a box with a detachable frame and a power battery pack comprising the box.

Background

In the existing electric vehicle power battery system technology, how to utilize the limited space to improve the electric quantity of the power battery pack as much as possible has become a problem to be mainly solved by various manufacturers. Among them, the grouping concept of "modularity" and the battery structure have been widely used. The traditional module structure is cancelled, and a plurality of single batteries are directly bonded and fixed at the bottom of the battery box body through the structural adhesive to form the power battery pack, so that the optimal way of solving the space limitation and increasing the electric quantity is realized.

However, although the power battery pack with the "modularity" greatly improves the space utilization, the following drawbacks still exist: 1. all the single batteries are directly adhered and fixed at the bottom of the battery box body through structural adhesive, if some single batteries are in failure, the maintenance of the single batteries is difficult, and the problem that the whole power battery pack is scrapped due to the failure of some single batteries can occur; 2. the battery box that adopts at present is high frame type box of structure as an organic whole usually, can give the series connection after the battery cell is in groups, processes such as sampling system connection increase the degree of difficulty, and the assembly is with high costs in groups.

SUMMERY OF THE UTILITY MODEL

The application provides a frame detachable box and power battery package, the frame of box can be dismantled, works as when the box is used for placing battery cell, be favorable to right battery cell in the box maintains the inspection and assembles in groups.

In order to achieve the purpose, the application provides a box body with a detachable frame, which comprises a bottom plate and a frame connected to the peripheral side edges of the bottom plate, wherein the bottom plate and the frame are enclosed to form an accommodating cavity;

the frames comprise a first frame and a second frame which are oppositely arranged along a first direction, and a pair of side frames which are oppositely arranged along a second direction, wherein two opposite ends of each side frame are respectively connected to the same corresponding ends of the first frame and the second frame in the second direction, and the first direction and the second direction are different and are respectively parallel to the bottom plate;

each side frame include along the side frame at the bottom of the third direction set gradually and can dismantle connect in the side frame at the bottom of the side, the side frame is kept away from at the bottom of the side one side of side frame connect in the bottom plate is in a side that corresponds in the second direction, just the side frame is followed the height of third direction is no longer than predetermineeing the height, the third direction perpendicular to the bottom plate.

In one embodiment, the single battery extending along the second direction is placed in the accommodating cavity, a pole is arranged at least one end of the single battery in the second direction, and the preset height is the height of the pole along the third direction.

In one embodiment, the side bottom frame includes a first frame portion and a bearing portion connected to a side of the first frame portion close to the bottom plate, the bearing portion is located on an inner surface of the first frame portion facing the accommodating cavity, and the bearing portion is used for connecting a side edge of a corresponding side of the bottom plate;

the side top frame comprises a second frame body portion and a locking portion connected to one side, close to the corresponding side bottom frame, of the second frame body portion, the locking portion is located on the outer surface, back to the containing cavity, of the second frame body portion, and the locking portion is used for being detachably connected with the first frame body portion.

Further, in an embodiment, a dimension of the first frame portion in the second direction is larger than a dimension of the second frame portion in the second direction;

the side bottom frame and the side top frame are detachably connected by arranging a first connecting piece in the first connecting hole and the first through hole which are correspondingly communicated;

when the side bottom frame and the side top frame are detachably connected, the first frame body part and the second frame body part are flush with each other on the inner surfaces facing the accommodating cavity.

Further, in an embodiment, the side bottom frame further includes a lifting lug portion connected to the first frame portion, and the lifting lug portion is located on an outer surface of the first frame portion facing away from the accommodating cavity;

when a single battery is placed in the accommodating cavity, the heights of the hanging lug part and the first frame body part do not exceed the height of a pole of the single battery in the third direction;

at least one of the hanging lug part, the first frame body part and the second frame body part is of a hollow structure, and a support rib is arranged in a hollow inner cavity.

Preferably, in an embodiment, a side of the side top frame, which is far away from the side bottom frame, is provided with a pressing portion, and the pressing portion extends towards the accommodating cavity along the second direction;

when the single batteries are placed in the containing cavity, the pressing part is pressed against the lower surface of the bottom plate, which faces the lower surface of the bottom plate, and the single batteries are back to the upper surface of the bottom plate;

the pressing part comprises a pressing plate or clamping jaws, the pressing plate extends to abut against all the single batteries in the accommodating cavity along the first direction, and the clamping jaws are in one-to-one correspondence with the single batteries.

Preferably, in an embodiment, the box further includes a plurality of sets of adapter assemblies, one adapter assembly is respectively disposed at each corner of the side frame, and the adapter assemblies are used for detachably connecting the side frame corresponding to the corner with the first frame or the second frame.

Specifically, in an embodiment, the adapter assembly includes a first adapter block, a second adapter block, and a third adapter block, the first adapter block is used for connecting the end portions of the first frame or the second frame in the second direction, the second adapter block is used for connecting the end portions of the bottom side frame in the first direction, and the third adapter block is used for connecting the end portions of the top side frame in the first direction;

the first transfer block is also used for being detachably connected with the second transfer block, and the third transfer block is also used for being detachably connected with the first transfer block and/or the second transfer block.

Optionally, in an embodiment, the box further includes at least one cross beam disposed in the accommodating cavity, the cross beam extends along the second direction, and two opposite ends of the cross beam are respectively connected to the pair of side frames; the at least one cross beam is used for dividing the accommodating cavity into at least two sub-accommodating cavities.

Further, in an embodiment, at least one of the beams is provided with at least one second connection hole on a side facing the bottom plate, the bottom plate is provided with at least one second through hole corresponding to the second connection hole on the beam, and the beam and the bottom plate are detachably connected by arranging a second connection member in the second connection hole and the second through hole which are correspondingly communicated.

The application also provides a power battery pack, which comprises a battery module and the box body, wherein the battery module is arranged in the box body;

the battery module comprises at least one single battery extending along the second direction, and a pole of the single battery is arranged at least one end of the single battery in the second direction.

Compared with the prior art, the beneficial effect that this application has does: the box includes along the relative a pair of side frame that sets up of second direction, each the side frame by the side frame at the bottom of and can dismantle connect in the side frame at the bottom of the side is last, just the side frame at the bottom of the side is not more than preset the height along the height of third direction, works as place the edge in the holding intracavity of box the second direction is extended and is in at least one end in the second direction is equipped with the battery cell of utmost point post, just battery cell's utmost point post is in height in the third direction does when presetting the height, through dismantling side frame at the top, can make battery cell in the holding intracavity is in the tip part of at least one end in the second direction exposes and on this tip utmost point post exposes, thereby is favorable to battery cell's maintenance inspection and assembly in groups.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a partial structure of a power battery pack according to an embodiment of the present disclosure.

Fig. 2 is a sectional view of a partially exploded perspective structure of the power battery pack shown in fig. 1 along a direction II-II.

Fig. 3 is a schematic perspective view of the box body shown in fig. 1, wherein structural adhesive is disposed in the box body.

Fig. 4 is a perspective exploded view of the case shown in fig. 3.

Fig. 5 is a perspective exploded view schematically showing a part of the structure of the case shown in fig. 3.

Description of the main element symbols:

power battery pack 1

Battery module 20

Single battery 21

Pole 212

Case 40

Bottom plate 41

Accommodating cavity 42

First sub-receiving cavity 421

Second sub-receiving cavity 422

Third sub-accommodation chamber 423

First frame 43

Second rim 44

Side frame 45

Side bottom frame 452

First frame body portion 4522

Supporting part 4524

First connection hole 4526

Ear hanging part 4528

Side top frame 454

Second frame body portion 4542

Locking part 4544

First through hole 4546

Pressing part 4548

First seal groove 456

Seal 458

First connecting member 61

Second connecting member 62

Structural adhesive 70

Adapter assembly 80

First transfer block 81

Bolt hole 812

Second transfer block 82

Third transfer block 83

Bolt 832

First cross member 51

Second cross member 52

Heat exchange structure 90

Heat conducting layer 91

First direction X

Second direction Y

Third direction Z

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In addition, in the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 and fig. 2, the present application provides a power battery pack 1, which includes a battery module 20 and a box 40 with a detachable frame, wherein the battery module 20 is disposed in the box 40. The battery module 20 includes at least one single battery 21, preferably a plurality of single batteries 21, and the plurality of single batteries 21 are connected in series to form the battery module 20, which is beneficial to increase the electric quantity of the battery module 20. Specifically, as shown in fig. 1 and fig. 2, in an embodiment, the battery module 20 includes a plurality of unit cells 21 arranged at intervals along a first direction X, and each unit cell 21 extends along a second direction Y. The first direction X and the second direction Y are different, and may be perpendicular or intersected but not perpendicular, and in this embodiment, they are preferably perpendicular.

As shown in fig. 2, at least one end of each of the single batteries 21 in the second direction Y is provided with a pole 212. Specifically, in an embodiment, two opposite ends of each single battery 21 in the second direction Y are respectively provided with one terminal 212, that is, the positive terminal and the negative terminal of each single battery 21 are respectively disposed at two opposite ends of the single battery 21 in the second direction Y, and each end of the single battery 21 is only provided with one terminal 212, which is beneficial to simplifying the structure of each end of the single battery 21. Of course, in other embodiments, the positive and negative terminals of the single battery 21 may be disposed at the same end of the single battery 21 in the second direction Y, which is not limited herein.

Referring to fig. 3 and 4, the box 40 includes a bottom plate 41 and a frame (not labeled) connected to the peripheral side of the bottom plate 41, the bottom plate 41 and the frame are enclosed to form an accommodating cavity 42, and the accommodating cavity 42 is used for accommodating the battery module 20 (as shown in fig. 1).

As shown in fig. 3 and 4, the frames include a first frame 43 and a second frame 44 oppositely disposed along the first direction X, and a pair of side frames 45 oppositely disposed along the second direction Y, the pair of side frames 45 are respectively connected to opposite ends of the first frame 43 and the second frame 44 in the second direction Y, and the first direction X and the second direction Y are respectively parallel to the bottom plate 41. Further, in the embodiment of the present application, each of the side frames 45 includes a side bottom frame 452 sequentially disposed along the third direction Z and a side top frame 454 detachably connected to the side bottom frame 452, one side of the side bottom frame 452, which is far away from the side top frame 454, is connected to a corresponding side of the bottom plate 41 in the second direction Y, and a height of the side bottom frame 452 along the third direction Z is not more than a preset height, and the third direction Z is perpendicular to the bottom plate 41. In an embodiment, when the single battery 21 is placed in the accommodating cavity 42 of the box 40, the preset height is a height of the pole 212 of the single battery 21 along the third direction Z.

It can be understood that, in the present application, the box 40 includes a pair of side frames 45 oppositely disposed along the second direction Y, each of the side frames 45 is composed of the side bottom frame 452 and a side top frame 454 detachably connected to the side bottom frame 452, and the height of the side bottom frame 452 along the third direction Z does not exceed a preset height, when the battery cell 21 extending along the second direction Y and having the terminal 212 at least one end in the second direction Y is placed in the accommodating cavity 42 of the box 40, and the height of the terminal 212 in the third direction Z is the preset height, the terminal 212 at the end of at least one end of the battery cell 21 in the second direction Y can be exposed and exposed by detaching the side top frame 454 adjacent to the end of the terminal 212 at the battery cell 21, thereby facilitating maintenance inspection and group assembly of the unit batteries 21.

Referring to fig. 2 to 4, the side bottom frame 452 includes a first frame portion 4522 and a bearing portion 4524 connected to a side of the first frame portion 4522 close to the bottom plate 41, the bearing portion 4524 is located on an inner surface of the first frame portion 4522 facing the receiving cavity 42, and the bearing portion 4524 is used for connecting a side edge of a corresponding side of the bottom plate 41.

The side top frame 454 comprises a second frame portion 4542 and a locking portion 4544 connected to a side of the second frame portion 4542 close to the corresponding side bottom frame 452, wherein the locking portion 4544 is located on an outer surface of the second frame portion 4542 facing away from the receiving cavity 42, and the locking portion 4544 is used for detachably connecting with the first frame portion 4522.

Specifically, as shown in fig. 2 to 4, in an embodiment, a dimension of the first frame portion 4522 in the second direction Y is larger than a dimension of the second frame portion 4542 in the second direction Y; the upper surface of the first frame portion 4522 facing the second frame portion 4542 is provided with at least one first connection hole 4526 on a side away from the accommodating cavity 42, the locking portion 4544 is provided with at least one first through hole 4546 corresponding to the first connection hole 4526 on the first frame portion 4522, and the side bottom frame 452 and the side top frame 454 are detachably connected by providing a first connection member 61 in the first connection hole 4526 and the first through hole 4546 which are correspondingly communicated. It should be noted that when the bottom side frame 452 and the top side frame 454 are detachably connected, the first frame portion 4522 and the second frame portion 4542 are flush with each other facing the inner surface of the receiving cavity 42.

Preferably, in this embodiment, the first frame portion 4522 has a plurality of first connection holes 4526 formed on an upper surface facing the second frame portion 4542 and spaced apart from each other along the first direction X, the locking portion 4544 has a plurality of first through holes 4546 correspondingly formed therein, and the side bottom frame 452 and the side top frame 454 are detachably connected by the plurality of first connection members 61, so that the connection reliability is high.

The first connecting element 61 may be a bolt or a pin, and the first connecting hole 4526 is a corresponding threaded hole or a pin hole, which is also not limited thereto. In this embodiment, the first connecting member 61 is a bolt, and the first connecting hole is a corresponding threaded hole.

The locking portion 4544 may extend in the second direction Y toward a direction away from the receiving cavity 42 to be flush with the outer surface of the first frame portion 4522, or to exceed the outer surface of the first frame portion 4522 in the second direction Y, or to be located on a side of the outer surface of the first frame portion 4522 close to the receiving cavity 42 in the second direction Y, which is not limited thereto. Preferably, in this embodiment, the locking portion 4544 extends along the second direction Y in a direction away from the receiving cavity 42 to be flush with the outer surface of the first frame portion 4522.

As shown in fig. 2 to 4, in an embodiment, the bearing portion 4524 extends a partial distance in the second direction Y toward the receiving cavity 42, that is, the bearing portion 4524 is sheet-shaped. In this embodiment, the bearing portion 4524 is provided with a placing groove on a side of the upper surface of the third direction Z away from the first frame portion 4522, and the placing groove is used for placing the bottom plate 41. Optionally, after a corresponding side of the bottom plate 41 is placed in the placement groove of the bearing part 4524, the two are hermetically connected by welding or gluing. Preferably, a reinforcing rib (see fig. 2) is disposed between the first frame portion 4522 and the bearing portion 4524, so as to enhance the connection strength between the first frame portion 4522 and the bearing portion 4524.

As shown in fig. 2, after the bearing part 4524 is connected with the bottom plate 41, the single battery 21 is adhered and fixed to the bearing part 4524 and/or the bottom plate 41 through a structural adhesive 70, so as to be fixedly disposed in the accommodating cavity 42. Specifically, in one embodiment, each end of each unit cell 21 along the second direction Y is simultaneously bonded to the bearing part 4524 and the bottom plate 41 through the structural adhesive 70. In other embodiments, each end of the single battery 21 may be adhesively fixed to the bearing part 4524 or the bottom plate 41 by the structural adhesive 70; alternatively, the entire lower surface of the single battery 21 facing the bottom plate 41 is adhesively fixed to the bearing part 4524 and the bottom plate 41 by the structural adhesive 70.

It should be noted that, as shown in fig. 4, in an embodiment, a bearing portion is also disposed on a side of each of the first frame 43 and the second frame 44 facing the accommodating cavity 42, and the first frame 43 and the second frame 44 are connected to a corresponding side of the bottom plate 41 in the first direction X through the respective bearing portion. The bearing parts of the first frame 43 and the second frame 44 may also be provided with grooves for placing the side edges of the bottom plate 41; the respective bearing portions of the first frame 43 and the second frame 44 may also be connected to the bottom plate 41 in a sealing manner by welding or gluing, which is not described herein again.

Further, as shown in fig. 2 to 4, in an embodiment, the bottom side frame 452 further includes a lifting lug portion 4528 connected to the first frame portion 4522, and the lifting lug portion 4528 is located on an outer surface of the first frame portion 4522 facing away from the receiving cavity 42. By providing the lifting lug portion 4528, a user can easily carry the box body 40.

When the single battery 21 is placed in the receiving cavity 42, in the third direction Z, the heights of the lifting lug portion 4528 and the first frame portion 4522 do not exceed the height of the pole 212 of the single battery 21. Wherein, the upper surfaces of the ear portions 4528 and the first frame portion 4522 facing the side top frame 454 may be flush or not flush, and preferably flush in this embodiment.

Preferably, in an embodiment of the present application, as shown in fig. 2, at least one of the shackle portion 4528, the first frame body 4522 and the second frame body 4542 has a hollow structure, and a support rib is disposed in the hollow cavity. Specifically, in an embodiment, at least one support rib extending along the second direction Y is disposed in each of the first frame portion 4522 and the second frame portion 4542, and a support rib extending along the second direction Y and a plurality of support ribs extending along the third direction Z are disposed in the lifting lug portion 4528. By designing the supporting ribs in this way, when the lug portion 4528, the first frame body portion 4522 and the second frame body portion 4542 are subjected to the pressing force in the second direction Y, the supporting ribs extending in the second direction Y in the lug portion 4528, the first frame body portion 4522 and the second frame body portion 4542 can all play a good role in supporting, and are prevented from being pressed inwards to touch the pole 212 of the single battery 21 in the accommodating cavity 42, so that the risk of short circuit and fire of the single battery 21 is avoided. Furthermore, the lifting lug portion 4528 is provided with a support rib extending along the third direction Z, when the lifting lug portion 4528 is subjected to the extrusion force in the third direction Z, the support rib extending along the third direction Z in the lifting lug portion 4528 can also serve as a good support seat, so that the lifting lug portion 4528 is prevented from being deformed due to compression, the lifting lug portion 4528 is ensured to be intact, and a user has a good touch feeling when carrying the box body 40 through the lifting lug portion 4528. Of course, in other embodiments, a support rib extending along the third direction Z may be disposed in the first frame portion 4522 and the second frame portion 4542, which is not limited to this.

It should be noted that the bottom side frame 452 and the top side frame 454 may be formed by an extrusion process, so that the lifting lug portion 4528, the first frame portion 4522 and the second frame portion 4542 having a hollow structure may be conveniently formed.

Referring to fig. 1 to 4 again, in the embodiment of the present application, a pressing portion 4548 is disposed on a side of the top side frame 454 away from the bottom side frame 452, and the pressing portion 4548 extends a partial distance toward the accommodating cavity 42 along the second direction Y. When the single battery 21 is placed in the accommodating cavity 42, the lower surface of the pressing part 4548 facing the bottom plate 41 presses against the upper surface of the single battery 21 opposite to the bottom plate 41, so that the pressing part 4548 can be matched with the structural adhesive 70 to play a role in double fixing the single battery 21, thereby reducing the dependence of the single battery 21 on the structural adhesive 70, reducing the usage amount of the structural adhesive 70, and also providing a heavy guarantee under the condition that the structural adhesive 70 fails.

Optionally, the pressing part 4548 includes a pressing plate or a claw, the pressing plate extends along the first direction X to press against all the single batteries 21 in the accommodating cavity 42, and the claw corresponds to the single batteries 21 one to one (that is, each single battery 21 is pressed by one claw). Specifically, as shown in fig. 1, in an embodiment, the pressing portion 4548 is an elongated pressing plate extending in the first direction X.

Further, as shown in fig. 1 and fig. 3 to fig. 5, in an embodiment, the box body 40 further includes a plurality of sets of adapter assemblies 80, one adapter assembly 80 is respectively disposed at each corner of the side frame, and the adapter assemblies 80 are used for realizing detachable connection between the side frame 45 corresponding to the corner and the first frame 43 or the second frame 44. Four corners of frame pass through adapter assembly 80 realizes dismantling the connection, makes the frame is whole to be dismantled, and the transportation of being convenient for also makes the frame is in a pair of frame on the first direction X and/or a pair of side frame on the second direction Y can be changed, is favorable to improving the application scope of box 40.

Specifically, as shown in fig. 1, 3 to 5, in one embodiment, the transition assembly 80 includes a first transition block 81, a second transition block 82 and a third transition block 83. The first transfer block 81 is configured to connect an end of the first frame 43 or the second frame 44 in the second direction Y, the second transfer block 82 is configured to connect an end of the bottom side frame 452 in the first direction X, the third transfer block 83 is configured to connect an end of the top side frame 454 in the first direction X, the first transfer block 81 is further configured to detachably connect the second transfer block 82, and the third transfer block 83 is further configured to detachably connect the first transfer block 81. As shown in fig. 5, in the present embodiment, the first adapter 81 has a pair of bolt holes 812, the third adapter 83 has a pair of bolts 832 passing through it, the third adapter 83 is screwed with the first adapter 81, and similarly, the first adapter 81 and the second adapter 82 can also be screwed. Of course, the adapter blocks in the adapter assembly 80 may be connected by other detachable connection methods, including but not limited to a snap connection and a plug connection. It is understood that the adapter blocks in the adapter assembly 80 are detachably connected to each other, so that the side frames 45 corresponding to the corners of the frames can be detachably connected to the first frame 43 or the second frame 44.

In other embodiments, the first transfer block 81 may be fixedly connected to the third transfer block 83, and the second transfer block 82 may be detachably connected to the first transfer block 81 or the third transfer block 83, as long as the top side frame 454 connected to the second transfer block 82 is not limited and thus the bottom side frame 452 is detachable.

It is understood that the first transfer block 81, the second transfer block 82 and the third transfer block 83 also have the same height as the corresponding frame in the third direction Z, respectively, so as to ensure that the corners of the frame can maintain flatness after the transfer assembly 80 is installed in the corners of the frame.

However, the first transfer block 81, the second transfer block 82, and the third transfer block 83 may be connected to the end of the corresponding bezel by a fixed connection method, or may be connected to the end of the corresponding bezel by a detachable connection method, which is not limited thereto.

In addition, it should be noted that in the embodiment of the present application, in order to improve the sealing performance of the bezel, a sealing structure is disposed between the bottom side bezel 452 and the top side bezel 454. Specifically, as shown in fig. 5, in an embodiment, the sealing structure includes one or more first sealing grooves 456 opened on an upper surface of the first frame body portion 4522 of the bottom side frame 452 facing the top side frame 454, the first sealing groove 456 extends along the first direction X (i.e., a length direction of the bottom side frame 452), and a sealing member 458 is disposed in the first sealing groove 456 to achieve sealing between the bottom side frame 452 and the top side frame 454. Preferably, in this embodiment, the upper surface of the side bottom frame 452 is provided with a plurality of first sealing grooves 456 distributed at intervals along the second direction Y, so that a plurality of sealing members 458 may be provided, which is beneficial to realizing multiple sealing and improving the sealing effect. The sealing element 458 may be a sealing strip or a sealing glue, but is not limited thereto.

It should be noted that, in the adapting assembly 80 disposed at the corner of the frame, the first adapting block 81 faces the outer surface of the second adapting block 82, the upper surface of the second adapting block 82 facing the third adapting block 83 is correspondingly provided with a second sealing groove (not labeled in the figure) communicating with the first sealing groove 456 on the side bottom frame 452, and the sealing member 458 extends to and is disposed in the second sealing groove, so that effective sealing can be achieved on the corner of the frame, and the sealing performance is better.

Referring to fig. 1 to fig. 3 again, in an embodiment, the box body 40 further includes at least one cross beam disposed in the accommodating cavity 42, the cross beam extends along the second direction Y, two opposite ends of the cross beam are respectively connected to the pair of side frames 45, and the at least one cross beam is used for dividing the accommodating cavity 42 into at least two sub-accommodating cavities.

Specifically, as shown in fig. 3, in the embodiment, a first cross beam 51 and a second cross beam 52 are disposed in the box body 40, the first cross beam 51 is close to the first frame 43, the first cross beam 51 and the second cross beam 52 divide the accommodating cavity 42 into a first sub-accommodating cavity 421, a second sub-accommodating cavity 422 and a third sub-accommodating cavity 423, and the first sub-accommodating cavity 421, the second sub-accommodating cavity 422 and the third sub-accommodating cavity 423 are sequentially distributed from the first frame 43 to the second frame 44. As shown in fig. 1, the first sub-receiving cavity 421 has a smaller space for receiving a power distribution structure (not shown) electrically connected to the battery module 20, including but not limited to a relay, a protection switch, and the like, the first frame 43 further has a plurality of openings communicating with the first sub-receiving cavity 421, and the openings are used for allowing connection wires in the power distribution structure to pass through the first sub-receiving cavity 421 and for providing connection ports; the second sub-receiving cavity 422 and the third sub-receiving cavity 423 are used for receiving a plurality of the single batteries 21, respectively.

It should be noted that the arrangement positions of the first cross beam 51 and the second cross beam 52 can be adjusted according to actual needs, so as to change the space sizes of the first sub-accommodating cavity 421, the second sub-accommodating cavity 422, and the third sub-accommodating cavity 423, so as to meet different requirements, which is not described herein again.

Preferably, as shown in fig. 1, fig. 2 and fig. 4, in an embodiment, at least one of the cross beams has at least one second connection hole on a side facing the bottom plate 41, the bottom plate 41 has at least one second through hole corresponding to the second connection hole on the cross beam, and the cross beam and the bottom plate 41 are detachably connected by disposing a second connection member 62 in the second connection hole and the second through hole which are correspondingly communicated. The cross beam is detachably connected with the bottom plate 41, so that the middle area of the bottom plate 41 can be prevented from deforming, and the overall structural strength of the box body 40 is improved.

Specifically, in this embodiment, the second beam 52 is provided with a set of second connection holes, the second connection holes penetrate through the second beam along the third direction Z, the bottom plate 41 is correspondingly provided with a set of second through holes, and when the second beam is assembled in the box body 40, a set of second connection members 62 respectively penetrate through the set of second connection holes and the second through holes, so as to detachably connect the beam and the bottom plate 41. The second connecting member 62 is similar to the first connecting member 61, and may be a bolt, a pin, or the like, and in this embodiment, the second connecting member 62 is a bolt with a nut.

Further, as shown in fig. 2, in the embodiment of this application, power battery package 1 still includes heat exchange structure 90, heat exchange structure 90 locates battery module 20 dorsad the upper surface of bottom plate 41, heat exchange structure 90 is used for right battery module 20 carries out the heat transfer, thereby can be lower when ambient temperature is right battery module 20 preheats and battery module 20's temperature is right when higher battery module 20 cools down, thereby can protect battery module 20 improves its life.

Preferably, in an embodiment, the power battery pack 1 further includes a heat conduction layer 91 disposed between the heat exchange structure 90 and the battery module 20, and the heat conduction layer 91 can improve the heat conductivity between the heat exchange structure 90 and the battery module 20, so as to improve the heat exchange efficiency. The heat conductive layer 91 may be made of a heat conductive adhesive, which is not limited to the above.

Further preferably, in an embodiment, the box 40 further includes a sealing cover (not shown) covering a side of the frame away from the bottom plate 41, so as to seal the heat exchanging structure 90, the heat conducting layer 91 and the battery module 20 in the accommodating cavity 42, which is beneficial to protecting the heat exchanging structure 90, the heat conducting layer 91 and the battery module 20. It can be understood that the box body 40 may be provided with a plurality of through holes for the liquid inlet and outlet pipes of the heat exchange structure 90 to pass through.

It should be noted that, as shown in fig. 2, in this embodiment, through holes for the second connection members 62 to pass through are respectively formed in the heat exchange structure 90 and the heat conduction layer 91, and the sealing cover can be fixed by the second connection members 62. Optionally, in this embodiment, a sealing structure may be disposed between the sealing cover and the frame, so as to enhance the overall sealing performance of the box body. For example, a sealing groove is formed in the upper surface of the frame along the third direction Z, and a sealing member is filled in the sealing groove, which is not described in detail herein. Further optionally, the application provides when power battery package 1 is installed on the vehicle, second connecting piece 62 can also be used for with the automobile body (for example chassis) of vehicle is fixed, thereby will power battery package 1 set up steadily in on the vehicle, can effectively promote power battery package 1's mode is favorable to promoting the NVH performance of whole car.

In the description of the present application, reference to the description of the terms "embodiment," "particular embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A box body with a detachable frame is characterized by comprising a bottom plate and a frame connected to the peripheral side edges of the bottom plate, wherein the bottom plate and the frame are enclosed to form an accommodating cavity;

the frames comprise a first frame and a second frame which are oppositely arranged along a first direction, and a pair of side frames which are oppositely arranged along a second direction, the side frames are respectively connected to the two opposite ends of the first frame and the second frame which correspond to each other in the second direction, and the first direction and the second direction are different and are respectively parallel to the bottom plate;

2. The box body with the detachable frame according to claim 1, wherein a single battery extending along the second direction is placed in the accommodating cavity, a pole is disposed at least one end of the single battery in the second direction, and the preset height is a height of the pole along the third direction.

3. The box body with the detachable side frame as claimed in claim 1, wherein the side frame comprises a first frame portion and a bearing portion connected to a side of the first frame portion close to the bottom plate, the bearing portion is located on an inner surface of the first frame portion facing the receiving cavity, and the bearing portion is used for connecting a side edge of a corresponding side of the bottom plate;

4. A cabinet having a removable bezel according to claim 3, wherein the first housing portion has a dimension in the second direction greater than a dimension of the second housing portion in the second direction;

5. The container as claimed in claim 3, wherein the side frame further comprises a lifting lug portion connected to the first frame portion, the lifting lug portion being located on an outer surface of the first frame portion facing away from the receiving cavity;

6. The box of any one of claims 1 to 5, wherein a side of the top side frame remote from the bottom side frame is provided with a pressing portion extending in the second direction towards the receiving cavity;

7. The box of any one of claims 1 to 5, further comprising a plurality of sets of adapter assemblies, wherein one adapter assembly is disposed at each corner of the rim, and the adapter assemblies are used for detachably connecting the side rims corresponding to the corners with the first rim or the second rim.

8. The frame-removable cabinet of claim 7, wherein the adapter assembly includes a first adapter block for connecting the ends of the first frame or the second frame in the second direction, a second adapter block for connecting the ends of the bottom side frame in the first direction, and a third adapter block for connecting the ends of the top side frame in the first direction;

9. The box of claim 1, further comprising at least one beam disposed in the receiving cavity, wherein the beam extends along the second direction, and opposite ends of the beam are respectively connected to the pair of side frames; the at least one cross beam is used for dividing the accommodating cavity into at least two sub-accommodating cavities.

10. The box body with a detachable frame as claimed in claim 9, wherein at least one of the beams has at least one second connecting hole on a side facing the bottom plate, the bottom plate has at least one second through hole corresponding to the second connecting hole on the beam, and the beam and the bottom plate are detachably connected by disposing a second connecting member in the second connecting hole and the second through hole which are correspondingly communicated.

11. A power battery pack, characterized by comprising a battery module and the box body as claimed in any one of claims 1 to 10, wherein the battery module is arranged in the box body;