CN215527866U

CN215527866U - A box and battery package for electric core stack body

Info

Publication number: CN215527866U
Application number: CN202122352819.2U
Authority: CN
Inventors: 何亚飞; 其他发明人请求不公开姓名
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-01-14
Anticipated expiration: 2031-09-27

Abstract

The present disclosure discloses a box and a battery pack for a cell stack. The box body comprises a frame body, a bottom plate and a reinforcing plate, wherein the frame body comprises two pairs of opposite side plates, the two pairs of side plates are detachably connected end to end, and the bottom plate is detachably connected to the bottom of the frame body; the reinforcing plate is detachably connected between at least one pair of the two pairs of side plates. The box body is simple in composition and convenient to install, can also be used for directly installing the battery core stacking body, and can greatly improve the space utilization rate of the battery pack and the energy density of a battery system.

Description

A box and battery package for electric core stack body

Technical Field

The disclosure relates to the field of power batteries, in particular to a box and a battery pack for a battery cell stack.

Background

The grouping mode of the existing new energy power battery system is mainly divided into three steps: firstly, the lithium batteries are modularized to form a 'module', and the energy loss of about 15-20% is generated in the stage, and the loss degree is different according to different grouping technologies; secondly, the 'modules' are grouped again to form a power battery PACK, and the energy loss of about 15-20% is generated in the stage, and the loss degrees are different according to different grouping technologies; and finally, grouping the power battery pack with the whole vehicle according to the power distribution requirement, and putting the power battery pack into the frame. The superposition effect of energy loss from the battery core to the power system can cause a large amount of unnecessary energy density loss, so that the production energy density loss of the traditional battery pack is large, the grouping process of the frame modules is complex, and the installation is inconvenient; in order to solve the above problems, a novel case for a cell stack body is now required.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a case and a battery pack to solve the above-mentioned problems occurring in the prior art.

In order to solve the above problems, according to one aspect of the present disclosure, there is provided a case comprising a frame body, a bottom plate and a reinforcing plate, the frame body comprising two pairs of opposite side plates, the two pairs of side plates being detachably connected end to end, the bottom plate being detachably connected to the bottom of the frame body; the reinforcing plate is detachably connected between at least one pair of the two pairs of side plates. The box body is simple in composition and convenient to install, can also be used for directly installing the battery core stacking body, and can greatly improve the space utilization rate of the battery pack and the energy density of a battery system.

In one embodiment, the two pairs of side plates are detachably connected end to end through threads, the two pairs of side plates are detachably connected end to end from the outside through bolts, and the frame body is detachably connected to the bottom of the frame body from the outside through bolts.

In one embodiment, the box body further comprises a supporting plate, the supporting plate is respectively arranged on the inner sides of the pair of side plates along the direction of the pair of side plates, and the bottom of the supporting plate is detachably connected to the bottom plate.

In one embodiment, the reinforcing plate is provided in plurality, a plurality of corresponding mounting grooves are provided on the pair of supporting plates, and both ends of any one of the reinforcing plates are respectively provided in the corresponding mounting grooves.

In one embodiment, the reinforcing plate is detachably attached to the bottom of the mounting groove by bolts.

In one embodiment, a connecting piece is arranged at the top of the mounting groove, and two ends of the connecting piece are detachably connected to the tops of the supporting plates on two sides of the mounting groove respectively.

In one embodiment, the support plate and the reinforcement plate are of uniform height.

In one embodiment, the supporting plate is provided with an electrode seat mounting groove with an upward opening.

In one embodiment, the height of the support plate is less than the height of the two pairs of side plates.

In one embodiment, the battery includes above-mentioned box and the stack of electric core that is used for the stack of electric core, the stack of electric core arrange in proper order install with in the box.

The utility model also relates to a battery pack which comprises the box body for the battery cell stacking body and the battery cell stacking body, wherein the battery cell stacking body is sequentially arranged and installed in the box body.

Drawings

Fig. 1 is a perspective view of a battery pack according to one embodiment of the present disclosure.

Fig. 2 is an exploded view of a battery pack of one embodiment of the present disclosure.

FIG. 3 is a perspective view of a case of one embodiment of the present disclosure.

Fig. 4 is a partial enlarged view of region a in fig. 3 of the present disclosure.

Fig. 5 is an exploded view of the base plate and frame of one embodiment of the present disclosure.

FIG. 6 is a cross-sectional view of a first side panel at a stiffener location according to one embodiment of the present disclosure.

FIG. 7 is an exploded view of the case of one embodiment of the present disclosure placed on the chassis of an automobile.

Reference numerals: 200. a battery pack; 101. a cell stack body; 100. a box body; 1. a frame body; 11. a first side plate; 12. a second side plate; 121. a connecting portion; 122. an avoidance part; 2. a base plate; 3. a reinforcing plate; 31. a notch; 4. a support plate; 41. mounting grooves; 42. a connecting member; 43. a pole seat mounting groove; 5. a pole seat.

Detailed Description

The preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present disclosure. It is to be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the present disclosure, but rather are intended to illustrate the true spirit of the presently disclosed technology.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the purposes of clearly illustrating the structure and operation of the present disclosure, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

The present disclosure relates to a box 100, the box 100 includes a frame 1, a bottom plate 2 and a reinforcing plate 3, the frame 1 includes two pairs of opposite side plates, the two pairs of side plates are detachably connected end to end, the bottom plate 2 is detachably connected to the bottom of the frame 1; the reinforcing plate 3 is detachably attached between at least one of the two pairs of side plates. This box 100 constitutes simply, and easy to assemble can also be used to the direct mount electric core stack body 101, can improve battery package space utilization and battery system's energy density in a large number.

Two pairs of curb plates of framework 1 can dismantle end to end connection through multiple mode, for example through the joint mode, two tip of one of them pair of curb plate set up the draw-in groove, set up the fixture block on the both ends of another pair of curb plate, and the fixture block can be gone into in the draw-in groove and is formed and to dismantle the connection. In addition, can also set up the slide rail on the tip of one of them pair of curb plate is along the top to the bottom, and two tip of another pair of curb plate set up the fixture block, and the fixture block slidable is drawn into in the slide rail and is made two pairs of curb plates can dismantle the connection.

In the embodiment shown in fig. 1-7, the two pairs of side plates are detachably connected from the outside by bolts, i.e. the side plates can be connected to each other from the outside of the side plates. Specifically, one pair of side plates is defined as a first side plate 11, the other pair of side plates is defined as a second side plate 12, two end portions of the first side plate 11 are provided with threaded holes on two end surfaces, and an end portion of the second side plate 12 is provided with a threaded hole penetrating through the thickness thereof. One of the side portions of the second side plate 12 close to the inside of the box 100 is defined as an inner side, and the side portion far away from the inside of the box 100 is defined as an outer side, so that the two end portions of the first side plate 11 are mounted at the inner side of the second side plate 12 and mounted at the end portions thereof, the threaded holes of the first side plate 11 correspond to the threaded holes of the second side plate 12, and the two pairs of side plates can be detachably connected at the outside through bolts.

It is understood that the threaded holes may be disposed at other positions of the two pairs of side plates or may be detachably connected in other manners, for example, the threaded holes of the second side plate 12 may be disposed at two end surfaces, and the threaded holes of the first side plate 11 may be disposed at end portions through the thickness thereof, which may also detachably connect the two pairs of side plates; any pair of side plates can be provided with extending parts which extend from two ends of the side plates and are perpendicular to the side plates and extend towards the other pair of side plates for a certain distance, a plurality of threaded holes are formed in the extending parts, threaded holes are also formed in corresponding positions of the other pair of side plates, and the two pairs of side plates can be detachably connected through threads.

The frame body 1 and the bottom plate 2 are detachably connected. Similarly, the frame body 1 can be detachably connected with the base plate 2 in various ways, for example, a plurality of selectable connecting sheets are arranged in the circumferential direction of the base plate 2, one end of each connecting sheet can be connected to the edge of the base plate and can rotate in the plane where the edge is located, a clamping hook is arranged at the other end of each connecting sheet, a plurality of corresponding cylinders protruding from the inner side are arranged on the inner side of the frame body 1, the base plate 2 is integrally installed on the inner side of the frame body 1, the clamping hooks can rotatably hook the cylinders to form detachable connection, the cylinders can also be arranged on the outer side of the frame body 1, the overall profile of the base plate 2 is slightly larger than that of the frame body 1, and the clamping hooks are clamped into the cylinders outside the frame body 1; the bottom plate 2 and the frame body 1 can be connected in a clamping block and clamping groove arrangement mode, and the connection mode between the bottom plate and the frame body is similar to that between the two side plates, so that the description is omitted; understandably, the two pairs of side plates can be connected with the bottom plate 2 independently and then connected end to form the frame body 1, or the two pairs of side plates can be connected with the bottom plate 2 after being connected with the frame body 1, and the connection sequence is not limited.

In the embodiment shown in fig. 2, the base plate 2 and the frame body 1 are detachably connected to each other from the outside by bolts. Specifically, the bottom of the second side plate 12 is provided with a connecting portion 121 extending toward the inside of the box 100, the connecting portion 121 is provided with a plurality of threaded holes, a corresponding position of the bottom plate 2 is also provided with a plurality of threaded holes penetrating through the thickness of the bottom plate, and the bottom plate 2 can be mounted on the top or bottom of the connecting portion 121 through threads. It can be understood that the connecting portion 121 may also be disposed on the first side plate 11, or the connecting portions 121 may also be disposed on both the first side plate 11 and the second side plate 12, and all four sides of the bottom plate 2 are provided with threaded holes and are connected to the first side plate 11 and the second side plate 12 through threads. Further, the connecting portion 121 is disposed inside the second side plate 12 and spaced apart from the bottom portion by a distance, as shown in fig. 2, an accommodating space is disposed below the connecting portion 121 for installing the bottom plate 2, and the bottom plate 2 is installed in the accommodating space below the connecting portion 121. The box body is integrally detachably connected, the battery cell can be installed in place, the side plates enclose the battery cell from the outer side, and the side plates are connected with each other through the bolts from the outside, so that the screwing degree of the bolts can be adjusted according to the thickness of the battery cell, the battery cell cannot be damaged, the space utilization rate of the box body can be improved, the energy density of the battery cell is improved, the battery cell is installed quickly, and the operation is convenient. The problem of jam and wearing and tearing that the battery core caused is laid to each curb plate of box fixed the taking one's place each other among the prior art is overcome. The cabinet 100 further includes a support plate 4 disposed at inner sides of the pair of side plates in a direction of the pair of side plates, respectively, and a bottom of the support plate is detachably coupled to the bottom plate. Specifically, it is defined that one side of the first side plate 11 close to the box 100 is an inner side of the first side plate 11, one side far away from the inner side of the box 100 is an outer side of the first side plate 11, the supporting plate 4 is disposed on the inner side of the first side plate 11, a bottom surface of the supporting plate 4 is provided with a plurality of threaded holes, the supporting plate 4 can be detachably connected to the bottom plate 2 from the outside through bolts, understandably, the bottom of the side plate 11 is aligned with the bottom of the connecting portion 121 of the second side plate 12, that is, the bottom of the supporting plate 4 is also provided with an accommodating space so as to be detachably connected to the bottom plate 2 together with the connecting portion 121. The supporting plate 4 can be detachably connected to the first side plate 11, a plurality of threaded holes are formed in one side, close to the first side plate 11, of the supporting plate 4, a plurality of threaded holes are also formed in the inner side of the first side plate 11, and the supporting plate 4 and the first side plate are detachably connected through threads. It is also possible to integrally form the support plate 4 and the first side plate 11. In the embodiment shown in fig. 2, the support plate 4 is a hollow structure, and a plurality of channels extending along the first direction are disposed in the support plate 4 to reduce the weight and increase the energy density of the battery cell.

Further, a plurality of mounting grooves 41 are provided on the support plate 4 to mount the reinforcing plate 3, and specifically, the support plate 4 is provided with a plurality of mounting grooves 41 spaced along the length thereof, the mounting grooves 41 being open toward the top and the inside, and the number of the mounting grooves 41 being determined according to the arrangement of the reinforcing plate 3 and the battery cells. In the embodiment shown in fig. 2, the battery cell is provided with three rows, and two reinforcing plates 3 are required, then at least two mounting grooves 41 are provided on each supporting plate 4, and the spacing distance between two adjacent mounting grooves 41 is determined according to the length of the battery cell.

Further, the bottom of mounting groove 41 is equipped with the screw hole, the both ends of reinforcing plate 3 to the top set up the screw hole that runs through to the bottom equally, install behind mounting groove 41 at the both ends of reinforcing plate 3, can connect in backup pad 4 from top detachably through the bolt and fix in order to strengthen, can place electric core earlier and install reinforcing plate 3 behind the box, install reinforcing plate 3 behind mounting groove 41 rethread bolt fastening from the top, more installation space has just been had when electric core installs like this, electric core also can not block owing to reinforcing plate 3's dimensional error or receive the damage, and it is more convenient to operate.

The support plate 4 includes a connection member 42 disposed at the top of the mounting groove 41, and both ends of the connection member 42 are detachably connected to the top of the support plate 4 at both sides of the mounting groove 41, respectively. The main function of the connecting member 42 is to reinforce the holding strength of the supporting plate 4 to the reinforcing plate 3. It can be understood that there are various embodiments of the connecting member 42, for example, by a clamping manner, one end of the connecting member 42 is optionally connected to one side of the mounting groove 41, the other end is provided with a buckle, the other side of the mounting groove 41 is provided with a clamping groove, the connecting member 42 can rotate to the other side of the mounting groove 41, and the buckle can be clamped into the clamping groove to form a detachable connection.

In the embodiment shown in fig. 3, the two ends of the connecting member 42 are respectively provided with a threaded hole, and the tops of the supporting plates 4 at the two sides of the mounting groove 41 are also provided with threaded holes, through which the connecting member 42 can be connected with the two sides of the mounting groove 41. Further, the middle of the connecting member 42 is upwardly concave in an arch shape to avoid the screw threads at both ends of the reinforcing plate 3. It will be appreciated that the connecting piece may also be provided at a position that avoids the thread of the reinforcing plate 3, so that the connecting piece is provided in the form of a sheet.

Still be equipped with on the backup pad 4 along its length direction spaced a plurality of polar seat mounting grooves 43, polar seat mounting groove 43 is the inside recess that caves in certain distance and form in backup pad 4 top, and opens towards top and inboard. It is understood that the depth and shape of the polar mount installation groove 43 may be adjusted according to the shape of the polar mount 5 without limitation. The position of the pole socket 5 needs to match the height of the battery cell, and the battery cell is installed in the box body 100, so that the height of the support plate 4 is required to be smaller than the height of the two pairs of side plates to conveniently install the pole socket 5.

Reinforcing plate 3 extends parallel to second curb plate 12, and both ends are equipped with the screw hole that link up to the top to the bottom, and the screw hole of bottom in this screw hole matching mounting groove 41 can be connected the bottom in mounting groove 41 with reinforcing plate 3's both ends through the screw thread. Further, the height of the reinforcing plate 3 is consistent with that of the supporting plate 4, and the bottoms of the two ends of the reinforcing plate 3 are provided with notches 31 so that the shapes of the two ends of the reinforcing plate 3 are matched with the mounting grooves 41.

The present disclosure also relates to a battery pack 200, wherein the battery pack 200 comprises a battery core and the above-mentioned case 100. The battery cells are sequentially arranged to form a battery cell stacking body 101, and understandably, the battery cells can be stacked in various ways without limitation; in installation and the box 100 are arranged in proper order to electric core stack body 101, electric core stack body 101 also can be through multiple mode installation and the box 100 in the same, and is unrestricted, in the embodiment that fig. 1 shows, electric core stack body 101 arranges in proper order, forms three rows of installations and in the box 100.

The battery pack 200 further comprises a pole socket 5, a plurality of electric cores arranged in sequence are stacked, a plurality of connecting ends are formed after the electric connection of the battery pack 101 is carried out through copper bars, each connecting end is connected with the pole socket 5 respectively to form an output end, and the pole socket 5 is installed in the pole socket installation groove 43 of the box body 100.

The box body 100 of the present disclosure has the frame body 1, the bottom plate 2 and the reinforcing plate 3 which are detachably connected, so that the tightening degree of the bolts of the four side plates can be adjusted after the battery cell is installed in the box body 100, which is beneficial to improving the space utilization rate of the box body, and the battery cell is convenient to install, thereby preventing the battery cell from being damaged in the installation process. The box 100 may be mounted on a chassis of an automobile, and as shown in fig. 7, the size and depth of the box 100 may be set according to the number of the battery cells and the size of the chassis of the automobile. The box body disclosed by the utility model is simple in design and single in structure, unnecessary space in the box body 100 is greatly reduced, the energy density of the battery cell is improved, the installation efficiency of the box body 100 is high, and the box body is easy to operate when the battery cell needs to be replaced in the using process.

The preferred embodiments of the present disclosure have been described in detail above, but it should be understood that various changes or modifications of the present disclosure may be made by those skilled in the art after reading the above teaching of the present disclosure. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. A box for a stack of cells, the box comprising:

the frame body comprises two pairs of opposite side plates, and the two pairs of side plates are detachably connected end to end;

the bottom plate is detachably connected to the bottom of the frame body; and

a reinforcing plate removably connected between at least one of the two pairs of side plates.

2. The case for a cell stack body of claim 1, wherein the two pairs of side plates are detachably connected end to end from the outside by bolts, and the frame body is detachably connected to the bottom of the frame body from the outside by bolts.

3. The case for a stack of cells of claim 1, further comprising:

the supporting plate is arranged on the inner sides of the pair of side plates along the direction of the pair of side plates respectively, and the bottom of the supporting plate is detachably connected to the bottom plate.

4. The box for the battery cell stack body of claim 3, wherein the reinforcing plate is provided in plurality, the supporting plate includes a plurality of corresponding mounting grooves, and both ends of any one of the reinforcing plates are respectively provided in the corresponding mounting grooves.

5. The case for a stack of cells of claim 4, wherein the reinforcement plate is removably attached to the bottom of the mounting groove from the top by bolts.

6. The box for the battery cell stack body of claim 4, wherein the support plate comprises a connecting piece arranged at the top of the mounting groove, and two ends of the connecting piece are respectively detachably connected to the top of the support plate at two sides of the mounting groove.

7. The case for a stack of cells of claim 3, wherein the support plate and the stiffener plate are of uniform height.

8. The case for a stack of cells of claim 3, wherein the support plate comprises an upwardly opening pole mount mounting slot.

9. The case for a stack of cells of claim 7, wherein the support plate has a height that is less than the height of the two pairs of side plates.

10. A battery pack, comprising the case for a stack of cells according to any one of claims 1 to 9 and a stack of cells, which are sequentially mounted in the case.