CN219779113U - Battery box and energy storage system - Google Patents

Abstract

The utility model discloses a battery box and an energy storage system, and belongs to the technical field of energy storage. The battery box includes: the box body is provided with a cavity with an upward opening, and the cavity is suitable for arranging a plurality of electric cores; the pressing plate is connected with the box body and is pressed above the plurality of battery cores; the box cover is connected with the box body and is positioned above the pressing plate so as to seal the cavity; the limit stop is arranged between the pressing plate and the box cover, the bottom surface of the limit stop is contacted with the pressing plate, and the top surface of the limit stop is contacted with the box cover. According to the battery box, the limit stop is arranged between the pressing plate and the box cover, the box cover presses the limit stop, and the limit stop applies pressure to the pressing plate, so that the rigidity of the pressing plate is improved by means of the rigidity of the box cover, the restraining effect of the pressing plate on the battery cell is improved, and the battery cell is prevented from vibrating up and down.

Description

Battery box and energy storage system

Technical Field

The utility model belongs to the technical field of energy storage, and particularly relates to a battery box and an energy storage system.

Background

The battery pack generally comprises a plurality of battery cells, wherein the battery cells are arranged in a box body, and the box body needs to fix the battery cells so as to prevent the battery cells from moving. At least one side of the box body is reserved for loading or unloading the battery cells, so that the fixing effect of the side on the battery cells is poor. When the battery pack is transported or used, the battery cells are easy to vibrate due to road bump, and the battery cells or the electric power loops among the battery cells are easy to damage.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery box and the energy storage system, which improve the restraint effect of the pressing plate on the battery cell by means of the box cover and avoid the up-and-down vibration of the battery cell.

In a first aspect, the present utility model provides a battery box comprising: the box body is provided with a cavity with an upward opening, and the cavity is suitable for arranging a plurality of electric cores; the pressing plate is connected with the box body and is pressed above the plurality of battery cores; the box cover is connected with the box body and is positioned above the pressing plate so as to seal the cavity; the limit stop is arranged between the pressing plate and the box cover, the bottom surface of the limit stop is contacted with the pressing plate, and the top surface of the limit stop is contacted with the box cover.

According to the battery box, the limit stop is arranged between the pressing plate and the box cover, the box cover presses the limit stop, and the limit stop applies pressure to the pressing plate, so that the rigidity of the pressing plate is improved by means of the rigidity of the box cover, the restraining effect of the pressing plate on the battery cell is improved, and the battery cell is prevented from vibrating up and down.

According to one embodiment of the utility model, the upper side of each cell is provided with a pole piece, and the pole piece is connected with at least two cells.

According to one embodiment of the utility model, the pressing plate is provided with a hollowed-out area, and the pole piece is arranged in the hollowed-out area.

According to one embodiment of the utility model, the pressure plate is fixedly connected with the box body in a first direction through a plurality of bolts, and the limit stop is arranged between two adjacent bolts along the first direction.

According to one embodiment of the utility model, a plurality of limit stops are arranged between two adjacent bolts along a second direction, which is perpendicular to the first direction.

According to one embodiment of the utility model, in the first direction the limit stop is located in a centered position between two adjacent bolts.

According to one embodiment of the utility model, the bottom surface of the limit stop is provided with a back glue, and the limit stop is adhered to the pressing plate through the back glue.

According to one embodiment of the utility model, the limit stop is made of an insulating material, and the pressing plate is made of steel.

According to one embodiment of the utility model, the top surface of the limit stop is parallel to the bottom surface, and the top surface and the bottom surface have the same shape.

In a second aspect, the present utility model provides an energy storage system comprising a battery box according to any of the above embodiments.

According to the energy storage system disclosed by the utility model, the box cover of the battery box presses the limit stop, and the limit stop applies pressure to the pressing plate, so that the rigidity of the pressing plate is improved by means of the rigidity of the box cover, the restraint effect of the pressing plate on the battery core is improved, the up-and-down vibration of the battery core is avoided, and the safety of the energy storage system is improved.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a battery box according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a battery box A-A provided by an embodiment of the present utility model;

FIG. 3 is a schematic structural view of a case according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a battery cell according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a platen according to an embodiment of the present utility model;

FIG. 6 is one of the mounting schematic diagrams of the press plate and the battery cell provided by the embodiment of the utility model;

fig. 7 is a second schematic view of the installation of the pressing plate and the battery cell according to the embodiment of the utility model.

Reference numerals:

the box body 100, the cavity 110, the limit ribs 120 and the partition plate 130;

the device comprises a pressing plate 200, a hollowed-out area 210, bolts 220 and a partition plate 230;

a case cover 300;

a limit stop 400;

cell 500, pole piece 510.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

If not specified, the front-back direction in the utility model is longitudinal, namely X direction; the left-right direction is transverse, namely Y-direction; the vertical direction is vertical, namely Z direction.

Referring to fig. 1 and 2, one embodiment of the present utility model provides a battery box.

In the present embodiment, the battery case includes a case body 100, a pressing plate 200, a case cover 300, and a limit stop 400, the case body 100 is provided with a cavity 110 having an opening facing upward, and the cavity 100 is adapted to arrange a plurality of battery cells 500; the pressing plate 200 is connected with the box body 100 and is pressed above the plurality of battery cells 500; the cover 300 is connected with the case 100 and is positioned above the pressing plate 200 to close the cavity 110; the limit stop 400 is disposed between the pressing plate 200 and the case cover 300, the bottom surface of the limit stop 400 contacts the pressing plate 200, and the top surface of the limit stop 400 contacts the case cover 300.

The battery box shown in fig. 2 is in a form after the battery cell 500 is mounted. The mounting process of the battery cell 500 may be: first, the cover 300 is opened; then the battery cell 500 is placed in the box body 100; then, the pressing plate 200 is covered above the battery cell 500 and is fixed; finally, the cover is covered on the case body 100.

In some embodiments, the cover 300 may be removably coupled to the case 100. When the battery cell 500 needs to be mounted or taken out, the case cover 300 can be detached from the case 100 to open the case cover 300; after the battery cell 500 is mounted, the case cover 300 is covered on the case 100, and is fixed.

In other embodiments, the cover 300 may be reversibly attached to the housing 100. When the battery cell 500 needs to be installed to obtain a battery cell to be taken out, the case cover 300 is opened; after the battery cell 500 is mounted, the case cover 300 is closed, and the case cover 300 is fixed to the case 100 by a locking structure. Wherein the locking structure can be a buckle or the like.

Referring to fig. 3, in some implementations, a spacing rib 120 and a divider 130 are provided on a sidewall of the case 100. The partition plate 130 can divide the inner cavity 110 into a plurality of subchambers, and a plurality of electric cores 500 can be placed in each subchamber, so that the electric cores 500 can be conveniently and firmly fixed by dividing all the electric cores 500 into a plurality of parts. The spacing ribs 120 divide the subchamber into a plurality of cell mounting locations, each of which can house one cell 500. The limit rib 120 may divide each cell 500 and restrict vibration of the cell 500 in the front-rear direction. The battery cell 500 is placed in the case 100, the bottom of the battery cell 500 contacts the bottom of the case 100, the outer side of the battery cell 500 contacts the side wall of the case 100, and the front and rear sides of the battery cell 500 contact the limit ribs 120. The case 100 can thereby function to vibrate each pair of the battery cells 500 in the horizontal direction. Of course, the case 100 may also adopt other structures to restrict the horizontal vibration of the battery cell 500, and this embodiment is not limited thereto, and mainly aims to restrict the vibration of the battery cell 500 in the vertical direction.

It can be understood that, during the movement of the battery box, the battery cell 500 is easily vibrated up and down due to the uneven road and more jolts. Although the pressing plate 200 can restrict the up-and-down vibration of the battery cell 500 to some extent, it may reduce the limit effect due to loosening or deformation. And since the bottom surface of the limit stop 400 is in contact with the pressing plate 200, the top surface of the limit stop 400 is in contact with the cover 300, so that the cover 300 and the pressing plate 200 are equivalent to be in a coupled state. And because case lid 300 and box 100 fixed connection, clamp plate 200 receives the restraint effect of case lid 300 to be difficult for becoming flexible or warp, guaranteed the spacing effect of clamp plate 200 to electric core 500.

In some embodiments, the platen 200 may have a positioning groove, in which the limit stop 400 may be disposed, and the periphery of the limit stop 400 may contact the groove wall of the positioning groove. Thus, the bump stopper 400 is not easily slid on the pressing plate 200, ensuring the force transmitting effect.

In other embodiments, the limit stop 400 may also be integrally connected with the platen 200. The bump stopper 400 may be connected to the platen 200 by welding or the bump stopper 400 may be integrally formed with the platen 200 when the platen 200 is manufactured.

According to the battery box of the utility model, the limit stop 400 is arranged between the pressing plate 200 and the box cover 300, the box cover 300 presses the limit stop 400, and the limit stop 400 applies pressure to the pressing plate 200, so that the rigidity of the pressing plate 200 is improved by the rigidity of the box cover 300, the restraint effect of the pressing plate 200 on the battery cell 500 is improved, and the battery cell 500 is prevented from vibrating up and down.

Referring to fig. 4, in some embodiments of the present utility model, a pole piece 510 is provided on the upper side of each cell 500, and at least two cells 500 are connected to the pole piece 510.

In the present embodiment, an electrical circuit is formed between each of the cells 500 in the battery box, and each of the cells 500 may be connected in series or in parallel by the pole piece 510. Because the pole pieces 510 are connected between the battery cells 500, the pole pieces 510 are easy to fall off due to the up-and-down vibration of the battery cells 500, and the stability requirement on the battery cells 500 is higher.

In this embodiment, the rigidity of the pressing plate 200 is improved by means of the rigidity of the case cover 300, so that the restraining effect of the pressing plate 200 on the battery cell 500 is improved, the battery cell 500 is prevented from vibrating up and down, and the pole piece 510 is prevented from falling off.

Referring to fig. 5 and 6, in some embodiments of the present utility model, the platen 200 is provided with a hollowed-out area 210, and the pole piece 510 is disposed in the hollowed-out area 210.

It should be noted that, the pole piece 510 at least partially overlaps the pressing plate 200 in the vertical direction, so that the pressing plate 200 is close to the upper side of the battery cell 500 as much as possible, and the restraining effect of the pressing plate 200 on the battery cell 500 is ensured. The pole piece 510 has a certain interval with the pressing plate 200 around, preventing electric leakage.

In some embodiments of the present utility model, the pressing plate 200 is fixedly coupled to the case 100 in the first direction by a plurality of bolts 220, and the limit stop 400 is disposed between two adjacent bolts 220 in the first direction.

In some embodiments, the cells 500 may be arranged side-by-side in a row in the front-to-back direction within the cavity 110, and multiple rows of cells 500 may be arranged in the cavity. The first direction is the same as the arrangement direction of the cells 500, i.e., the longitudinal direction. In the plurality of columns of the battery cells 500, the bolts 220 may be disposed above each column of the battery cells 500 and all arranged along the first direction. Further, the connection lines may be located at the upper center of the corresponding column of the battery cells 500. By arranging the bolts 220 in the arrangement direction of the battery cells 500, the battery cells 500 can be better fixed.

It will be appreciated that the bolts 220 are typically positioned at the edge of the platen 200 due to the need for a fixed connection to the housing 100, resulting in the two bolts 220 being spaced farther apart in the first direction. Alternatively, in the case where the number of the cells 500 is large, the partition plate 130 may be disposed in the inner cavity 110, and the pressing plate 200 may be fixedly connected to the partition plate 130 by the bolts 220, and a plurality of cells may be spaced between the two bolts 220 in the first direction. Because the span between the two bolts 220 is larger, after the bolts 220 are locked, the part of the pressing plate 200 between the two bolts 220 is easy to deform upwards into an arch shape, so that the battery cell 500 between the two bolts 220 cannot be effectively restrained, and the battery cell 500 is displaced under the vibration working condition.

In the present embodiment, the bump stopper 400 is provided between the adjacent two bolts 220 in the first direction, and after the cover 300 is fixed to the case, the cover 300 presses the bump stopper 400, and the bump stopper 400 applies pressure to the pressing plate 200, so that deformation of the portion of the pressing plate 200 between the two bolts 220 can be suppressed.

In some embodiments of the present utility model, a plurality of limit stops 400 are disposed between two adjacent bolts 220 along a second direction, the second direction being perpendicular to the first direction.

The second direction may be a lateral direction, and the deformation resistance of the platen 200 may be improved by arranging the plurality of limit stops 400 in the lateral direction.

In some embodiments, depending on its size, the limit stop 400 may be located above the center cell 500 between two adjacent bolts 220 or straddle the center cell 500 and the adjacent cell 500. The plurality of limit stops 400 are disposed along the second direction means that the plurality of limit stops 400 are disposed on the center cell 500 or above the center cell 500 and the neighboring cells 500.

In some embodiments of the present utility model, the limit stop 400 is located at a centered position between two adjacent bolts 220 in the first direction.

It will be appreciated that the center between two bolts 220 is more easily deformed, and thus the limit stop 400 is located at the center between two adjacent bolts 220, which can more effectively suppress the deformation of the platen 200.

Referring to fig. 7, in some embodiments, a spacer 230 is formed at the lower side of the pressing plate 200 in a vertical arrangement, and the spacer 230 extends between two adjacent cells 500 after the pressing plate 200 is pressed against the cells 500. The partition plates 230 may be disposed on the same vertical plane in one-to-one correspondence with the partition plates 130 on the case 100. The separator 230 and the separator 130 restrain the cells 500 from being positioned in the front-rear direction, and may vertically arrange the cells 500.

In some embodiments of the present utility model, the bottom surface of the limit stop 400 is provided with a backing adhesive, and the limit stop 400 is adhered to the platen 200 by the backing adhesive.

It will be appreciated that the limit stop 400 may be adhered to the platen 200 during use and removed from the platen 200 during non-use. The bump stopper 400 is simple to install and detach, does not affect the structures of the pressing plate 200 and the box cover 300, has good adaptability, and is easy to implement.

In some embodiments of the present utility model, the bump stopper 400 is made of an insulating material, and the platen 200 is made of steel.

It should be noted that, the limit stop 400 may be made of pc+abs (engineering plastic alloy). And, the limit stop 400 can be an integrated structure, so that the use of the limit stop 400 is prevented from being influenced by the connecting gap. The bump stopper 400 is simple in structure and easy to implement.

It will be appreciated that the use of steel as the platen 200 provides itself with a higher stiffness, reducing the risk of deformation. By providing the limit stop 400, the restraining effect of the pressing plate 200 on the battery cell 500 can be further improved.

In some embodiments of the present utility model, the top surface and the bottom surface of the bump stop 400 are parallel and have the same shape.

In some embodiments, the bump stop 400 may be cubic or cylindrical. The upper surface of the pressing plate 200 and the lower surface of the case cover 300 may be parallel to each other, the top surface of the limit stop 400 is closely attached to the lower surface of the case cover 300, and the bottom surface of the limit stop 400 is closely attached to the upper surface of the pressing plate 200. The limit stopper 400 can effectively suppress the pressing plate 200 from being upwardly protruded to be deformed.

In a second aspect, the present utility model provides an energy storage system comprising a battery box according to any of the above embodiments. The specific structure of the battery box may refer to the foregoing embodiment, and this embodiment is not described herein.

According to the energy storage system provided by the utility model, the box cover 300 of the battery box presses the limit stop 400, and the limit stop 400 applies pressure to the pressing plate 200, so that the rigidity of the pressing plate 200 is improved by means of the rigidity of the box cover 300, the restraint effect of the pressing plate 200 on the battery cell 500 is improved, the battery cell 500 is prevented from vibrating up and down, and the safety of the energy storage system is improved. Of course, the energy storage system can also be applied to the technical solutions in the above embodiments, which also has corresponding technical effects.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery box, comprising:

the box body is provided with a cavity with an upward opening, and the cavity is suitable for arranging a plurality of electric cores;

the pressing plate is connected with the box body and is pressed above the plurality of electric cores;

the box cover is connected with the box body and is positioned above the pressing plate so as to seal the cavity;

the limit stop is arranged between the pressing plate and the box cover, the bottom surface of the limit stop is in contact with the pressing plate, and the top surface of the limit stop is in contact with the box cover.

2. The battery box according to claim 1, wherein a pole piece is arranged on the upper side of each cell, and at least two cells are connected to the pole piece.

3. The battery box according to claim 2, wherein the pressing plate is provided with a hollowed-out area, and the pole piece is arranged in the hollowed-out area.

4. A battery box according to any one of claims 1 to 3, wherein the pressure plate is fixedly connected to the box body in a first direction by a plurality of bolts, and the limit stopper is provided between two adjacent bolts in the first direction.

5. The battery box of claim 4, wherein a plurality of the limit stops are provided between two adjacent bolts in a second direction, the second direction being perpendicular to the first direction.

6. The battery compartment of claim 4, wherein the limit stop is located in a centered position between two adjacent bolts in the first direction.

7. A battery box according to any one of claims 1-3, wherein the bottom surface of the limit stop is provided with a back adhesive, and the limit stop is adhered to the pressing plate through the back adhesive.

8. A battery box according to any one of claims 1 to 3, wherein the limit stop is made of an insulating material, and the pressing plate is made of steel.

9. The battery box of any of claims 1-3, wherein the top surface of the limit stop is parallel to the bottom surface and the top surface and the bottom surface have the same shape.

10. An energy storage system, characterized in that it comprises a battery box according to any one of claims 1-9.