CN218996923U - Battery shell capable of inhibiting expansion of battery cell and energy storage device - Google Patents

Abstract

The application relates to the technical field of energy storage products, in particular to a battery shell and an energy storage device for inhibiting expansion of a battery core. Therefore, the shell scheme weakens the influence of the expansion of the shell-free battery module on the shell of the product, the shell of the product can be still formed by common plastic injection molding through strengthening only the part of the shell, high-strength engineering plastic is not needed, and the cost is saved.

Description

Battery shell capable of inhibiting expansion of battery cell and energy storage device

Technical Field

The application relates to the technical field of energy storage products, in particular to a battery shell capable of inhibiting expansion of a battery cell and an energy storage device.

Background

At present, energy storage products often comprise a battery module and a product shell, wherein the battery module is placed in the product shell, a BMS (battery management system) and other parts are connected to form a finished product, and in order to improve the energy density of the product, the shell-free battery module has a trend, that is, the battery module is not provided with the shell, and due to the lack of expansion inhibition of the module shell to the battery module, the product shell is simply relied on to bear the expansion force of the battery module, so that higher requirements are provided for the product shell, such as the thickness of the product shell is increased, or the material with higher strength is replaced, and the cost is increased.

Disclosure of Invention

The utility model aims at providing a battery case and energy memory who restraines electric core inflation has solved the battery module self in the energy storage class product that exists among the prior art and has not been furnished with the shell to a certain extent, only relies on the product shell to bear battery module's inflation power, proposes higher requirement to the product shell, has increased the technical problem of cost.

The application provides a battery shell for inhibiting electric core inflation, including the shell for install battery module, just correspond in the shell at least one inflation side of battery module is provided with the reinforcement plate.

In the above technical solution, further, a deformation gap is formed between the reinforcement plate and the corresponding side portion of the housing.

In any of the above embodiments, further, the reinforcement plate is connected to a corresponding side portion of the housing.

In any of the above technical solutions, further, the reinforcement plate is connected with the corresponding side portion of the housing by at least one of gluing, clamping, plugging and hot-melt connection.

In any of the above technical solutions, further, the reinforcement plate is provided with a first reinforcement abutment portion, a side portion of the housing corresponding to the reinforcement plate is provided with a second reinforcement abutment portion, and the first reinforcement abutment portion abuts against the second reinforcement abutment portion.

In any of the above technical solutions, further, a guide plate is formed at the top of the reinforcement plate along the height direction thereof, and is disposed obliquely from top to bottom along the height direction of the reinforcement plate, toward the battery module.

In any of the foregoing embodiments, further, the number of the reinforcing plate members is plural, and two of the reinforcing plate members are disposed opposite to each other.

In any of the above technical solutions, further, a plurality of reinforcing plate members are surrounded into tapered guide openings along the height direction of the reinforcing plate member from top to bottom.

In any of the above aspects, further, the battery case for suppressing the expansion of the battery cells further includes a support member that is provided at the guide opening and is erected on the plurality of reinforcement plate members.

In any of the above solutions, further, the support member has a box structure that is hollow inside and at least open at the top; and/or

The supporting member is connected with the plurality of the reinforcing plate pieces through gluing; and/or

The shell comprises a main shell and a top cover, and the top cover is detachably connected with the main shell; the reinforcement plate is disposed within the main housing.

In any of the above embodiments, further, the reinforcement plate is a metal plate. The application also provides an energy storage device, including battery module and the battery casing of above-mentioned arbitrary technical scheme of suppression electric core inflation, wherein, the battery module sets up in the shell, just the inflation side of battery module support lean on strengthen the plate. Therefore, the battery case has all the beneficial technical effects of suppressing the expansion of the battery cells, and the description thereof is omitted.

Compared with the prior art, the beneficial effects of this application are:

the battery case that suppresses electric core inflation that this application provided has weakened the influence that no shell battery module inflation caused the product shell, through only strengthening to the local of outer shell, and the product shell still can use ordinary plastics injection molding, need not use high strength engineering plastics, has saved the cost greatly, and in addition, to metal material's product shell, this scheme has also reduced the thickness of product shell correspondingly, helps practicing thrift the cost equally.

Drawings

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

Fig. 1 is a schematic structural view of a reinforcement plate according to an embodiment of the present application;

FIG. 2 is a schematic view of another structure of a reinforcement plate according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a main housing according to an embodiment of the present disclosure;

FIG. 4 is an assembly view of a reinforcement panel and a main housing provided in an embodiment of the present application;

fig. 5 is an assembly view of a reinforcement plate and a battery module according to an embodiment of the present application;

fig. 6 is another assembly view of the reinforcement plate and the battery module according to the embodiment of the present application;

FIG. 7 is an assembly view of a reinforcement panel and a support member provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of an energy storage device according to an embodiment of the present disclosure;

FIG. 9 is a cross-sectional view taken along section A-A of FIG. 8;

fig. 10 is another schematic structural diagram of an energy storage device according to an embodiment of the present disclosure.

Reference numerals:

the battery module comprises a 1-shell, a 11-main shell, a 12-top cover, a 13-rectangular plate, a 14-connecting plate, a 2-reinforcing plate, a 21-buckle, a 22-plug-in part, a 23-strip block, a 3-guide plate, a 4-deformation gap, a 5-supporting member and a 6-battery module.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.

All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices 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 application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

A battery case and an energy storage device for suppressing expansion of a battery cell according to some embodiments of the present application are described below with reference to fig. 1 to 10.

Example 1

Referring to fig. 4, 5, 6, 8 and 10, the embodiment of the present application provides a battery case for suppressing expansion of a battery cell, which includes a case 1 for mounting a battery module 6, and two sides of the case 1 corresponding to the larger expansion deformation amount of the battery module 6 are each provided with a reinforcement plate 2, that is, the left and right sides of the case 1 are each provided with the reinforcement plate 2, which is, of course, not limited thereto, for example, only one side of the case 1 is provided with the reinforcement plate 2, or three adjacent sides of the case 1 are each provided with the reinforcement plate 2, or four sides of the case 1 are each provided with the reinforcement plate 2, which is selected according to practical needs, and note that: the reinforcing plate 2 is additionally arranged on the side part, namely the main deformation side, of the battery module 6 with a larger area, so that the effect of inhibiting the expansion of the battery cell can be better achieved.

Based on the above-described structure, the cell expansion in the battery module 6 is firstly in contact with the reinforcement plate 2, the reinforcement plate 2 effectively inhibits the expansion, and further reduces the expansion force to which the casing 1 is subjected, and reduces the requirement on the casing 1, thereby helping to reduce the thickness of the casing 1 and the cost, and in addition, the material with high strength and high price is not required to be adopted for coping with the expansion force, and the production cost is further reduced.

Wherein, all set up the reinforcement plate 2 to the main expansion side of two large tracts of land about the electric core, can effectively restrain the inflation of electric core, still reduced the quantity of strengthening plate 2, help reduce cost.

Further, the reinforcing plate member 2 is made of metal, such as steel plate, aluminum plate, or the like.

Further, preferably, as shown in fig. 5 and 6, the battery module 6 and the case 1 are rectangular parallelepiped and regular in shape, conforming to the conventional use requirements, and the two reinforcing plate members 2 are mainly provided at the two longer side portions of the case 1.

Further, it is preferable that, further, preferably, as shown in fig. 10, the case 1 includes a main casing 11 and a top cover 12, and the top cover 12 is detachably connected with the main casing 11, facilitating the installation of the battery module 6 and the like therein; the reinforcement plate 2 is disposed within the main housing 11.

In this embodiment, preferably, as shown in fig. 9, a deformation gap 4 is formed between the reinforcement plate 2 and the side of the corresponding housing 1.

As can be seen from the above-described structure, this deformation gap 4 provides a space for the reinforcement plate 2 to deform, that is, when the deformation of the reinforcement plate 2 is small, the gap can accommodate the amount of deformation without being pressed to the housing 1 and thus without affecting the housing 1.

In this embodiment, preferably, the reinforcement plate 2 is connected with the side portion of the corresponding housing 1, so as to fix the reinforcement plate 2, and effectively avoid the movement of the reinforcement plate 2 before the battery module 6 is put into the housing, and further facilitate the enhancement of the overall strength, and can bear larger expansion force, and in addition, the reinforcement plate 2 is not easy to move, so as to play a better role in protection.

Further, it is preferable that the reinforcement plate 2 is connected to the side of the corresponding housing 1 by at least one of gluing, clamping and hot-melting, for example, the reinforcement plate 2 may be connected to the side of the corresponding housing 1 by gluing, clamping, plugging or hot-melting, or by one of a combination of clamping and gluing, a combination of gluing and hot-melting, a clamping, plugging and gluing, or the like.

For the clamping therein, as shown in fig. 1 to 4 and 9, preferably, the reinforcement plate 2 is provided with a buckle 21, the inner side of the corresponding housing 1 is provided with a rectangular plate 13 described below, the buckle 21 is clamped at the edge of the connecting plate 14, and of course, the clamping is not limited thereto, the inner side of the housing 1 may be provided with a buckle 21, and the reinforcement plate 2 is provided with a clamping groove, and the clamping may also be realized.

For the plugging therein, preferably, as shown in fig. 1 and 2, the bottom of the reinforcement plate 2 is formed with a plugging portion 22, the housing 1 is formed with a jack, and the plugging portion 22 may be plugged into the jack, and of course, not only the bottom of the reinforcement plate 2 is formed with the plugging portion 22, but also the side of the reinforcement plate 2 may be formed with the plugging portion 22, the side corresponding to the housing 1 is formed with a connection portion, and the connection portion is provided with the jack.

In this embodiment, it is preferable that the reinforcement panel 2 is provided with a first reinforcement abutment, a side portion of the housing 1 corresponding to the reinforcement panel 2 is provided with a second reinforcement abutment, and the first reinforcement abutment abuts against the second reinforcement abutment.

As is apparent from the above-described structure, the reinforcement plate member 2 is reinforced by the first reinforcement abutment portion abutting against the second reinforcement abutment portion.

Further, preferably, as shown in fig. 1 to 3 and 9, the second reinforcement abutment portion includes a plurality of rectangular plates 13 extending in the height direction of the housing 1, the plurality of rectangular plates 13 being arranged at intervals in sequence along the length direction of the housing 1, with a connecting plate 14 connected between any adjacent two rectangular plates 13. Of course, not limited thereto, the second reinforcement abutment may also include a plurality of square blocks or the like. Note that: in particular, for the connection between the reinforcement plate 2 and the side of the corresponding housing 1 by means of a snap connection, a snap-fit 21 is provided on the reinforcement plate 2, which snap-fit 21 can be snapped onto the edge of the connecting plate 14.

Further, as shown in fig. 1 to 3 and 9, the first reinforcing abutment portion is preferably a strip-shaped block 23 extending along the longitudinal direction of the reinforcing plate member 2, and capable of abutting against the plurality of rectangular plates 13. Of course, the first reinforcing abutment portion may be a square block or the like, not limited thereto.

Further, it is preferable that the number of the first reinforcement abutment portions and the number of the second reinforcement abutment portions are plural and correspond to each other one by one, and both are sequentially provided at intervals along the length direction of the housing 1.

In this embodiment, preferably, as shown in fig. 1, 2, 5 and 6, the reinforcing plate 2 is formed at the top thereof in the height direction thereof with the guide plate 3, and the guide plate 3 is disposed obliquely toward the battery module 6 from the top down in the height direction of the reinforcing plate 2.

As is apparent from the above-described structure, the guide plate 3 plays a guiding role when the battery is mounted in the housing 1.

In this embodiment, preferably, as shown in fig. 7 and 9, two reinforcing plate members 2 are surrounded by tapered guide openings from top to bottom in the height direction of the reinforcing plate member 2, and when the reinforcing plate members 2 are three or more, the above-mentioned number of plate members may be sequentially surrounded by guide openings.

According to the above-described structure, the plurality of reinforcing plate members 2 are surrounded to form a horn-shaped guide opening, which plays a role in guiding the battery module 6 into the case.

In this embodiment, preferably, as shown in fig. 7 and 9, the battery case that suppresses the expansion of the battery cells further includes a support member 5, and the support member 5 is provided at the guide opening and is erected on the plurality of reinforcement plate members 2.

As is clear from the above-described structure, the battery management system, the wire harness, the heat dissipation module, and the like can be mounted on the support member 5, making full use of space, and having a high integration level.

Further, preferably, as shown in fig. 7, the supporting member 5 has a box structure having a hollow interior and at least an open top, that is, the top of the box structure is provided with a through hole, so that the battery system, the wire harness, the heat dissipation module, etc. can be conveniently installed therein, while the side and bottom of the box structure are designed according to the need, for example, the front and rear sides of the box may not exist.

Further, preferably, the supporting member 5 and the plurality of reinforcing plate members 2 are all connected by gluing, and the operation is simple, convenient, time-saving and labor-saving while satisfying the connection requirement, and of course, not limited thereto, the supporting member 5 and the reinforcing plate members 2 may be connected by fastening members such as bolts or clips.

Further, as shown in fig. 7, the support member 5 is preferably provided with a structure such as a buckle 21 and a mount.

In summary, the battery case for inhibiting the expansion of the battery cell provided by the application has the following structure and advantages:

because the cell expansion force is larger, when the product shell is a metal product, the metal material has higher strength, and can basically meet the expansion inhibition requirement, but the thickness of the shell is relatively increased, the overall dimension of the whole battery pack is larger, and in the plastic shell battery product, because the common plastic has insufficient strength, high-strength engineering plastic is specially selected, and the thicker shell wall thickness is adopted, thereby the complexity of the structural shell is improved, and the die cost and the part cost are greatly improved.

To solve the above problems, the new housing solution provided in the present application is to assemble a metal plate, i.e. a reinforcing plate 2, at a proper position (a cell expansion surface, a large surface position of a cell for a soft package cell) of the lower housing, i.e. the main housing 11, and the cell expansion is firstly contacted with the metal plate, and because the strength of the metal plate is far beyond that of the plastic housing, the deformation of the metal plate caused by the cell deformation is much smaller, and a certain gap can be reserved between the metal plate and the lower housing, so that a small amount of deformation of the metal plate does not affect the product housing, and finally the influence of the cell expansion on the product appearance is greatly weakened.

When the metal shell is arranged for use, the metal plate is used at a local position, so that the whole metal shell does not need to be thick, and the cost is still quite low. When the plastic shell 1 is arranged for use, the metal plate bears the expansion force of the battery cell, so that the plastic shell 1 does not need to use expensive high-strength engineering plastics, but only needs to use general plastic, and the cost of the product shell is reduced.

The metal plate and the lower shell can be fixed together through a plurality of modes such as double faced adhesive tape bonding, buckle connection, grafting, hot-melt column connection and the like, and the metal plate can be effectively prevented from moving before the battery module 6 is put into the shell.

For the connection mode of the buckle 21, after the battery module 6 is put into the shell, the metal plate is extruded between the battery module 6 and the shell 1, the buckle 21 reversely buckles the rectangular plate 13 on the shell 1, and the metal plate is prevented from falling off along the direction indicated by the arrow.

The metal plates on the two sides are provided with outward flanging structures, namely guide plate 3, so that a horn mouth can be formed, and the battery module 6 can be guided into the shell;

in addition, the flanging structure of the metal plate can be used as a mounting supporting surface, the mounting bracket, namely the supporting member 5, and the metal plate are fixed together through double faced adhesive tape or other modes, and the battery BMS, the wire harness, the heat dissipation module and the like can be mounted on the mounting bracket, namely the supporting member 5, and finally the complete system is assembled.

The shell scheme weakens the influence of the expansion of the shell-free battery module on the shell of the product, and the shell of the product can be still formed by common plastic injection molding through strengthening only the part of the shell, so that high-strength engineering plastic is not needed, the cost is greatly saved, and in addition, the thickness of the shell of the product is correspondingly reduced for the shell of the product made of metal materials, and the cost is greatly saved.

Example two

Referring to fig. 8 to 10, a second embodiment of the present application further provides an energy storage device, which includes the battery case for suppressing the expansion of the battery cell according to the first embodiment, so that the battery case for suppressing the expansion of the battery cell has all the beneficial technical effects, and the same technical features and beneficial effects are not repeated.

In this embodiment, preferably, as shown in fig. 8 to 10, the energy storage device includes a battery module 6, the battery module 6 is disposed inside the case 1, and the expansion side of the battery module 6 abuts against the reinforcement plate 2.

According to the structure described above, only the local reinforcement of the shell 1 reduces the probability of deformation of the shell of the product, and greatly improves the user experience and the product reputation of the energy storage device.

Further, preferably, the present energy storage device further includes a battery BMS, a wire harness, a heat dissipation module, etc., which are mountable on the support member 5, and the battery BMS, the wire harness, the heat dissipation module are all of an existing structure, and will not be described in detail herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. The battery shell capable of inhibiting the expansion of the battery cell is characterized by comprising a shell, wherein the shell is used for installing a battery module, and a reinforcing plate is arranged in the shell corresponding to at least one expansion side of the battery module.

2. The cell casing for suppressing expansion of a battery according to claim 1, wherein a deformation gap is formed between the reinforcement plate and the corresponding side portion of the casing.

3. The cell expansion suppressing battery case according to claim 1, wherein the reinforcement plate is connected to a side portion of the corresponding case.

4. The cell casing of claim 3, wherein the reinforcement plate is connected to the corresponding side of the casing by at least one of gluing, clamping, plugging, and hot melt connection.

5. The cell casing that suppresses expansion of the cells according to claim 1, wherein the reinforcement plate is provided with a first reinforcement abutment, the side portion of the casing corresponding to the reinforcement plate is provided with a second reinforcement abutment, and the first reinforcement abutment abuts against the second reinforcement abutment.

6. The battery case for suppressing expansion of a battery cell according to claim 1, wherein a guide plate is formed at the top of the reinforcement plate in the height direction thereof, and the guide plate is disposed obliquely toward the battery module from top to bottom in the height direction of the reinforcement plate.

7. The cell casing for suppressing expansion of a battery according to claim 6, wherein the number of the reinforcing plate members is plural, and wherein two of the reinforcing plate members are disposed opposite to each other.

8. The cell case for suppressing expansion of a battery according to claim 6, wherein a plurality of the reinforcing plate members are surrounded by tapered guide openings from top to bottom in the height direction of the reinforcing plate members.

9. The cell expansion-suppressing battery case according to claim 8, further comprising a support member provided at the guide opening and erected on a plurality of the reinforcing plate members.

10. The cell expansion suppressing battery case according to claim 9, wherein the support member has a box structure which is hollow inside and at least open at the top; and/or

The supporting member is connected with the plurality of the reinforcing plate pieces through gluing; and/or

The shell comprises a main shell and a top cover, and the top cover is detachably connected with the main shell; the reinforcement plate is disposed within the main housing.

11. The cell casing of any one of claims 1 to 10, wherein the reinforcement plate is a sheet metal member.

12. An energy storage device comprising a battery module and a battery housing as claimed in any one of claims 1 to 11, wherein the battery module is disposed within the housing with an expansion side of the battery module abutting the reinforcement plate.

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