CN217158415U - Battery pack shell, battery pack and electric equipment - Google Patents

Abstract

The utility model relates to a battery package casing, battery package and consumer, the battery package casing includes mounting panel and a plurality of sub-casing, and every sub-casing has relative first end and second end, and first end is connected in the mounting panel, and the inside of sub-casing has and is used for holding electric core or the free accommodation space of battery, and the second end is open end to be used for supplying electric core or battery monomer to insert accommodation space. Through above-mentioned technical scheme, be provided with a plurality of subshells on the mounting panel, the mounting panel is connected to the first end of subshell, and the second end of subshell is open end, and electric core or battery monomer are installed in accommodation space, because the first end of subshell is direct to link to each other with the mounting panel, consequently, need not to realize fixing to the subshell through setting up the structure, can avoid the structure to occupy the battery package inner space, reach the purpose that promotes the collection efficiency of battery package.

Description

Battery pack case, battery pack and electric equipment

Technical Field

The disclosure relates to the technical field of battery packs, in particular to a battery pack shell, a battery pack and electric equipment.

Background

With the increasing popularization of new energy automobiles, the market pays more and more attention to the battery part of the new energy automobiles. The traditional battery package that new energy automobile used at present comprises a plurality of battery modules, need reserve installation clearance between module and module to it is fixed to install each module through the structure, however, the structure can occupy the inside space of battery package, and this will influence the integrated efficiency of battery package.

SUMMERY OF THE UTILITY MODEL

The purpose of this disclosure is to provide a battery package casing, battery package and consumer to solve the technical problem that exists in the correlation technique.

In order to achieve the above object, according to a first aspect of the present disclosure, a battery pack case is provided, which includes a mounting plate and a plurality of sub-cases, each of the sub-cases has a first end and a second end opposite to each other, the first end is connected to the mounting plate, an accommodating space for accommodating a battery cell or a battery cell is provided inside the sub-case, and the second end is an open end for inserting the battery cell or the battery cell into the accommodating space.

Optionally, the first end of the sub-housing is welded to the mounting plate.

Optionally, the sub-housing is integrally formed with the mounting plate.

Optionally, the battery pack case further includes a plurality of covers, the number of the covers is the same as that of the sub-cases, and each cover covers the second end of the corresponding sub-case.

Optionally, adjacent two of the plurality of sub-housings are spaced apart.

Optionally, the battery pack case further includes a cooling structure connected to the sub-case, and a cooling passage is provided in the cooling structure, and the cooling passage is used for a cooling medium to pass through so as to cool the outer wall of the sub-case by the cooling medium.

Optionally, the cooling structure is configured as a plate, the plate is provided with a plurality of openings, and each sub-housing is inserted through the corresponding opening.

Optionally, the number of the plate-like members is plural, and the plural plate-like members are arranged at intervals between the first end and the second end of the sub-housing.

Optionally, the cooling passage has a plurality of baffles therein, the plurality of baffles dividing the cooling passage into a plurality of sub-channels.

According to a second aspect of the present disclosure, a battery pack includes a battery cell or a battery cell, and a battery pack case as described above, wherein the battery cell or the battery cell is installed in the accommodating space.

Optionally, the positive electrode tab and the negative electrode tab of the battery cell or the battery cell are formed on the same side of the battery cell or the battery cell.

According to a third aspect of the present disclosure, there is provided an electric device including the battery pack as described above.

Through above-mentioned technical scheme, be provided with a plurality of subshells on the mounting panel, the mounting panel is connected to the first end of subshell, and the second end of subshell is open end, and electric core or battery monomer install in accommodation space. That is, the battery pack case of the present disclosure actually corresponds to a case that also includes the battery cell or the module of the related art. Because the first end of sub-casing directly links to each other with the mounting panel, consequently, need not additionally to set up the structure and fix sub-casing to avoid the structure to the occupation of battery package inner space, reach the purpose that promotes the integration efficiency of battery package.

In addition, due to the fact that the structural part is not needed to be arranged, arrangement and layout of the sub-shells on the mounting plate cannot be affected by the structural part, more choices can be provided, and operators can increase or decrease the number of the sub-shells according to actual needs to match with the electric equipment.

In addition, compare in the correlation technique in the assembly process to the battery package, need be connected a plurality of modules one by one with the structure (for example, coating structure glue bonds between module and structure) the said, a plurality of sub-casings that this scheme provided are connected on the mounting panel in batches in advance (for example in to battery package casing production and processing process, just be connected a plurality of sub-casings with the mounting panel respectively), like this, when assembling the battery package, only need with electric core or battery monomer correspond install in sub-casing can, assembly to the battery package is convenient and fast more, labour saving and time saving. Moreover, because a plurality of sub-shells are arranged on the mounting plate in advance, the flexible arrangement of the sub-shells in the overall design is facilitated, and the integration efficiency of the battery pack is improved to a certain extent.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic perspective view of a battery pack housing provided in an exemplary embodiment of the present disclosure; wherein the cover and cooling structure are not shown;

fig. 2 is a schematic top view of a battery pack housing provided in an exemplary embodiment of the present disclosure; wherein the cover and cooling structure are not shown;

fig. 3 is a schematic perspective view of a battery pack housing provided in an exemplary embodiment of the present disclosure; wherein the cover is not shown;

fig. 4 is a schematic perspective view of a battery pack provided in an exemplary embodiment of the present disclosure; wherein a side wall and a top wall of the battery pack case are not shown;

fig. 5 is a schematic perspective view of a battery pack provided in an exemplary embodiment of the present disclosure; wherein one side wall of the battery pack case is not shown;

fig. 6 is a schematic cross-sectional view of a battery pack provided in an exemplary embodiment of the present disclosure;

fig. 7 is an enlarged schematic view of a portion B of fig. 6.

Description of the reference numerals

1-a battery pack housing; 10-mounting a plate; 20-a sub-shell; 21-an accommodation space; 30-a cover body; 40-a plate-like member; 41-cooling channels; 410-a baffle; 411-subchannel; 50-positive electrode lead-out structure; 60-a negative electrode lead-out structure; 70-a top wall; 80-a side wall; 100-a battery pack; a-the gap.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless stated to the contrary, "inner and outer" means inner and outer of respective structures or component profiles; "distal and proximal" refer to distal and proximal to the respective structure or component. The above directional terms are merely for convenience in describing the present disclosure, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the present disclosure. In addition, it is to be understood that the terms "first," "second," and the like are used for distinguishing one element from another, and are not necessarily order nor importance.

The battery pack case in the related art mainly refers to an empty case, for example, an empty case of a prismatic battery pack, which is composed of a top wall, side walls, and a bottom wall. Module or battery cell self have the casing, and module or battery cell's casing passes through the structure to be fixed in the empty case, and the structure has taken the inside space of battery package casing, is unfavorable for promoting the integrated efficiency of battery package. In addition, each battery cell or module needs to be installed one by one, and the assembly of the battery pack is time-consuming and labor-consuming.

In view of this, referring to fig. 1 to 7, according to a first aspect of the present disclosure, there is provided a battery pack case 1, including a mounting plate 10 and a plurality of sub-cases 20, each sub-case 20 having a first end and a second end opposite to each other, the first end being connected to the mounting plate 10, the sub-cases 20 having an accommodating space 21 for accommodating a battery cell or a battery cell therein, and the second end being an open end for inserting the battery cell or the battery cell into the accommodating space 21.

Through the technical scheme, the mounting plate 10 is provided with the plurality of sub-housings 20, the first ends of the sub-housings 20 are connected with the mounting plate 10, the second ends of the sub-housings 20 are open ends, and the battery cores or the battery cells are mounted in the accommodating space 21. That is, the battery pack case 1 of the present disclosure corresponds to a case that also includes a battery cell or module of the related art. Because the first end of the sub-housing 20 is directly connected to the mounting plate 10, it is not necessary to additionally arrange a structural member to fix the sub-housing 20, so that the space in the battery pack 100 is prevented from being occupied by the structural member, and the purpose of improving the integration efficiency of the battery pack 100 is achieved.

In addition, since the present solution does not need to provide a structural member, when arranging and laying the plurality of sub-housings 20 on the mounting plate 10, the sub-housings are not interfered or interfered by the structural member, so that more options are available, for example, an operator can increase or decrease the number of the sub-housings 20 according to actual needs to match with the electric devices.

In addition, compare in the correlation technique in the assembly process to battery package 100, need be connected a plurality of modules one by one with the structure (for example, coating structure glue bonds between module and structure) to say, a plurality of sub-casing 20 that this scheme provided are connected on mounting panel 10 in batches by (for example, in to battery package casing 1 production and processing process, just be connected a plurality of sub-casing 20 with the mounting panel respectively) in advance (like this, when assembling battery package 100, only need with electric core or battery monomer correspondence install in sub-casing 20 can, assembly to battery package 100 is convenient and fast, labour saving and time saving more. Moreover, since the plurality of sub-housings 20 are arranged on the mounting plate 10 in advance, flexible arrangement of the sub-housings 20 is facilitated, which is advantageous to improve the integration efficiency of the battery pack 100 to some extent.

Here, it should be noted that the sub-housing 20 and the mounting plate 10 may be connected by any means that meets the connection requirement, for example, in an embodiment provided by the present disclosure, the first end of the sub-housing 20 may be welded to the mounting plate 10. Connect through the welded mode between sub-casing 20 and the mounting panel 10, compare and realize being connected of sub-casing 20 and mounting panel 10 through the structure, on the one hand, adopt the welded mode can be fixed more firm with sub-casing 20 and mounting panel 10, can promote the stability of being connected between mounting panel 10 and the sub-casing 20, on the other hand, need not to reserve (or only need reserve less installation clearance) between the adjacent sub-casing 20 and be used for the gluey installation clearance A of mounting structure or structure, consequently, it is littleer to occupy the inner space of battery package 100, more be favorable to promoting the integrated efficiency of battery package 100.

In a second embodiment provided by the present disclosure, the sub-housing 20 may be integrally formed with the mounting plate 10. For example, the sub-housing 20 and the mounting plate 10 may be integrally formed by casting, and the sub-housing 20 and the mounting plate 10 are integrally formed, so that the sub-housing 20 and the mounting plate 10 have better consistency and integrity, and the overall structure of the battery pack housing 1 is more robust and reliable.

In other embodiments provided by the present disclosure, the sub-housing 20 and the mounting plate 10 may be connected by any method such as clamping, riveting, and the like, in short, as long as the direct connection between the sub-housing 20 and the mounting plate 10 can be achieved, and the connection manner between the sub-housing 20 and the mounting plate 10 is not limited by the present disclosure.

Alternatively, as shown in fig. 4 to 6, in an embodiment provided by the present disclosure, the battery pack case 1 may further include a plurality of covers 30, the number of the covers 30 may be the same as that of the sub-cases 20, and each cover 30 covers the second end of the corresponding sub-case 20. When assembling the battery pack 100, after the electric core or the single battery is mounted in the accommodating space 21, each cover 30 is covered on the second end of the corresponding sub-housing 20, so as to enclose the electric core or the single battery in the accommodating space 21.

Of course, in other embodiments provided by the present disclosure, a plurality of sub-housings 20 may share the same cover, that is, the number of the cover may also be one, and when assembling the battery pack 100, the cover may simultaneously cover the second ends of all the sub-housings 20, so as to simplify the structure of the battery pack housing 1, and facilitate the assembly of the battery pack 100.

In addition, the cover 30 and the second end of the sub-housing 20 may be connected by any means meeting the connection requirement, such as welding, bonding, etc., and the connection means between the cover 30 and the sub-housing 20 is not limited in the present disclosure.

In order to facilitate the leading out of the battery cells or the battery cells installed in the accommodating space 21, as shown in fig. 4 to 6, a positive electrode lead-out structure 50 for connecting with a positive electrode tab of the battery cells or the battery cells and a negative electrode lead-out structure 60 for connecting with a negative electrode tab of the battery cells or the battery cells may also be respectively provided on each sub-housing 20.

As shown in fig. 1 to 7, in order to facilitate heat dissipation of the battery cells and the battery cells in the sub-housings 20, two adjacent sub-housings 20 in the plurality of sub-housings 20 may be arranged at intervals. That is to say, a gap a is formed between two adjacent sub-housings 20, and in the process of charging and discharging the battery pack 100, the gap a can separate the adjacent sub-housings 20, and facilitate heat dissipation of the battery cells or the battery cells in the sub-housings 20, and the gap a can also prevent the adjacent sub-housings 20 from contacting with each other or exchanging heat, so as to improve the safety performance of the battery pack 100. In addition, it is also advantageous to arrange cooling pipes and the like associated with cooling structures (see below in detail) in the gaps a between adjacent sub-housings 20.

In addition, for the embodiment in which the sub-housings 20 are connected to the mounting plate 10 by welding, since the two adjacent sub-housings 20 are spaced apart from each other, an operation space is provided for a welding operator, and the welding operation by the operator is facilitated.

In order to avoid the influence of the excessive space between the sub-housings 20 on the integration efficiency of the battery pack 100, the gap a between two adjacent sub-housings 20 may be reduced as much as possible while satisfying the heat insulation and the cooling structure in the actual arrangement.

Here, it should be noted that, as shown in fig. 4 to fig. 6, the battery pack case 1 may further include a top wall 70 and a side wall 80, the top wall 70 and the side wall 80 jointly enclose a shell-shaped structure with an opening facing downward, the mounting plate 10 may be a bottom wall of the battery pack case 1, the shell-shaped structure formed by the top wall 70 and the side wall 80 is snapped onto the mounting plate 10 to jointly form an internally closed mounting space with the mounting plate 10, and the plurality of sub-cases 20 are disposed in the mounting space. When the battery pack case 1 is mounted on a vehicle, the mounting plate 10 may be directly connected to the vehicle body, or the top wall 70 may be connected to the vehicle body to fixedly mount the battery pack 100.

Also, the present disclosure does not limit the specific shape of the battery pack case 1, and for example, in one exemplary embodiment provided in the present disclosure, the battery pack case 1 may be formed in a cubic shape or a rectangular parallelepiped shape, or, in other embodiments, the battery pack case 1 may be formed in a cylindrical shape.

In order to facilitate heat dissipation of the battery cells or the battery cells installed in the sub-housing 20, as shown in fig. 3 to 7, the battery pack housing 1 further includes a cooling structure connected to the sub-housing 20, and a cooling passage 41 is disposed in the cooling structure, and the cooling passage 41 is used for a cooling medium to pass through so as to cool an outer wall of the sub-housing 20 by the cooling medium. The electric core or the single battery in the sub-shell 20 can generate certain heat in the charging and discharging process, the generated heat can be transferred to the sub-shell 20, at this time, the cooling passage 41 arranged on the outer wall of the sub-shell 20 can exchange heat with the sub-shell 20, so that the heat generated by the electric core or the single battery body is transferred to the outside of the battery pack 100 through the cooling passage 41, and the cooling of the battery pack 100 is realized.

In one embodiment provided by the present disclosure, the cooling structure is configured as a plate-shaped member 40, a plurality of openings are provided on the plate-shaped member 40, and each sub-housing 20 is penetrated through the corresponding opening. That is to say, the plate-shaped member 40 with the cooling passage 41 formed therein is sleeved on the periphery of each sub-housing 20, on one hand, the plate-shaped member 40 is disposed around the periphery of the sub-housing 20, and the outer wall of the plate-shaped member 40 is in contact with the outer wall of the sub-housing 20, which is more beneficial for the heat exchange between the cooling medium in the cooling passage 41 in the plate-shaped member 40 and the outer wall of the sub-housing 20 to transfer the heat generated by the battery cell or the battery cell to the outside of the battery pack 100, and on the other hand, the plate-shaped member 40 disposed around the periphery of the sub-housing 20 can also play a role in supporting and reinforcing the sub-housing 20, thereby improving the overall strength of the sub-housing 20 and further improving the safety performance of the battery pack 100.

In order to further improve the heat dissipation effect on the battery core or the battery cell in the sub-housing 20, as shown in fig. 7, in the present disclosure, the cooling passage 41 may share the same outer wall with the sub-housing 20, that is, the cooling passage 41 may be enclosed by the plate-shaped member 40 and the outer wall of the sub-housing 20 adjacent to the plate-shaped member 40, so that the cooling medium flowing in the cooling passage 41 may directly contact with the outer wall of the sub-housing 20, the cooling medium may exchange heat with the sub-housing 20 without passing through the plate-shaped member 40, and the cooling efficiency and the cooling effect on the battery core or the battery cell in the sub-housing 20 are better.

It should be noted that, the present disclosure also does not limit the specific arrangement manner of the plate-shaped member 40, for example, as shown in fig. 3 to fig. 6, the plate surface of the plate-shaped member 40 may be arranged along the transverse direction, and of course, the plate surface of the plate-shaped member 40 may also be arranged along the longitudinal direction, in short, as long as the requirement of heat dissipation of the battery cells or the battery cells in the sub-housing 20 can be met.

In addition, the shape of the sub-channel 411 formed in the plate-shaped member 40 is not limited in the present disclosure, for example, the sub-channel 411 may be formed in any shape such as a straight line, a curved line, a spiral shape, etc., as long as the heat dissipation requirement of the battery cells or the battery cells in the sub-housing 20 can be satisfied.

Of course, the present disclosure does not impose any limitation on the specific structure of the cooling structure, for example, in another embodiment provided by the present disclosure, two adjacent sub-housings 20 of the plurality of sub-housings 20 are arranged at intervals, the battery pack 100 may further include a plurality of cooling pipes, each cooling pipe is located in the gap a between the two adjacent sub-housings 20, and the outer wall of the cooling pipe is in contact with the outer wall of the two adjacent sub-housings 20, and the cooling pipe is formed with the cooling passage 41 therein. Similarly, the cooling tube has the same function and effect as the plate-like member 40, and the disclosure is not repeated herein.

In addition, the number of the plate-shaped members 40 may be increased or decreased adaptively as needed, and as shown in fig. 3 to 7, the number of the plate-shaped members 40 may be plural, and the plural plate-shaped members 40 are arranged at intervals between the first end and the second end of the sub-housing 20. The plate-shaped members 40 arranged between the first end and the second end of the sub-shell 20 at intervals can better support and fix the sub-shell 20, and can also increase the heat exchange area between the sub-shell 20, thereby further improving the heat dissipation effect of the battery core or the battery cell.

In an exemplary embodiment provided by the present disclosure, the number of the plate-shaped members 40 is two, and the two plate-shaped members 40 are spaced apart in the height direction of the sub-housing 20.

Here, the plate-shaped member 40 may be integrally formed with the sub-housing 20, for example, the sub-housing 20 and the plate-shaped member 40 may be formed at one time by casting, or the plate-shaped member 40 may be fixedly connected to the sub-housing 20 by welding before the battery cell or the battery cell is mounted in the accommodating space 21.

In order to further enhance the structural strength of the plate-shaped member 40, in the present disclosure, as shown in fig. 6, a plurality of baffles 410 may be provided in the cooling passage 41, and the plurality of baffles 410 divide the cooling passage 41 into a plurality of sub-channels 411. The plate 40 can reinforce the baffle 410, thereby enhancing the reinforcing and fixing effect of the plate 40 on the sub-housing 20.

In addition, since the baffle 410 divides the cooling channel into a plurality of sub-channels 411, the cooling medium can flow into and flow out from different sub-channels 411 respectively in the process of cooling the sub-housing 20, and the phenomenon of turbulence in the process of flowing the cooling medium in the cooling passage 41 can be avoided, thereby avoiding the problem of uneven cooling and heat dissipation of different sub-housings 20.

According to a second aspect of the present disclosure, a battery pack is provided, which includes a battery cell or a battery cell, such as the battery pack case 1 above, mounted in the accommodating space 21. The battery pack 100 has all the advantages of the battery pack case 1, and the disclosure will not be repeated herein.

In an embodiment provided by the present disclosure, optionally, the positive electrode tab and the negative electrode tab of the battery cell or the battery cell may be formed on the same side of the battery cell or the battery cell. In this way, in the process of assembling the battery pack 100, the positive electrode tab and the negative electrode tab can be led out from the same side of the electric core or the battery cell and connected with the positive electrode lead-out structure 50 and the negative electrode lead-out structure 60, so that the space occupied by the positive electrode lead-out structure 50 and the negative electrode lead-out structure 60 in the battery pack 100 is reduced, and the integration efficiency of the battery pack 100 is further improved.

Specifically, in an embodiment provided by the present disclosure, as shown in fig. 4 to 6, in the process of installing the battery cell or the battery cell into the accommodating space 21, one end of the battery cell, where the positive tab and the negative tab are formed, may be disposed toward the second end of the terminal housing 20, so that, since the second end is an open end, it is more convenient for an operator to perform operations such as bending, welding, leading out and the like on the positive tab and the negative tab.

Of course, the present disclosure does not limit the orientation of the positive and negative electrode tabs of the battery cell in the accommodating space 21, for example, when the battery cell is mounted, the end of the battery cell formed with the negative electrode tab may be disposed toward the first end of the terminal housing 20.

According to a third aspect of the present disclosure, an electric device is provided, which includes the battery pack described above. The powered device may be any device having a power demand, such as a vehicle, and the disclosure is not limited thereto.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (12)

1. The utility model provides a battery pack shell which characterized in that, includes mounting panel and a plurality of subshells, every the subshell has relative first end and second end, first end connect in the mounting panel, the inside of subshell has and is used for holding electric core or the free accommodation space of battery, the second end is open end to be used for supplying electric core or battery monomer to insert accommodation space.

2. The battery pack housing of claim 1, wherein the first end of the sub-housing is welded to the mounting plate.

3. The battery pack housing of claim 1, wherein the sub-housing is integrally formed with the mounting plate.

4. The battery pack case according to any one of claims 1 to 3, further comprising a plurality of covers, wherein the number of covers is the same as the number of the sub-cases, and each cover covers the second end of the corresponding sub-case.

5. The battery pack housing according to any one of claims 1-3, wherein adjacent two of the plurality of sub-housings are spaced apart.

6. A battery pack housing according to any one of claims 1-3, further comprising a cooling structure connected to the sub-housing, wherein a cooling passage is provided in the cooling structure for passing a cooling medium for cooling the outer wall of the sub-housing by the cooling medium.

7. The battery pack housing according to claim 6, wherein the cooling structure is configured as a plate-shaped member provided with a plurality of openings, each of the sub-housings being perforated to the corresponding opening.

8. The battery pack housing of claim 7, wherein the number of the plate-shaped members is plural, and the plural plate-shaped members are arranged at intervals between the first end and the second end of the sub-housing.

9. The battery pack housing of claim 7, wherein the cooling passage has a plurality of baffles therein, the plurality of baffles dividing the cooling passage into a plurality of sub-channels.

10. A battery pack comprising a cell or a battery cell, a battery pack housing according to any one of claims 1 to 9, the cell or the battery cell being mounted in the receiving space.

11. The battery pack of claim 10, wherein the positive tab and the negative tab of the cell or the battery cell are formed on the same side of the cell or the battery cell.

12. An electric device characterized by comprising the battery pack according to claim 10 or 11.

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