CN218586155U

CN218586155U - Battery pack

Info

Publication number: CN218586155U
Application number: CN202223117110.5U
Authority: CN
Inventors: 张克泽; 李翼; 陈梅芳
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-03-07
Anticipated expiration: 2032-11-23

Abstract

The utility model relates to a battery technology field provides a battery pack, include: the battery box body comprises a bottom plate and a main frame, the main frame is connected to the bottom plate, and an accommodating space is defined by the main frame and the bottom plate; the battery, the battery sets up in accommodation space, on the first direction of edge perpendicular to bottom plate, accommodation space's minimum degree of depth is greater than 0 and is not more than the two-thirds of battery height, thereby can make the main frame expose the partly of battery lateral part, the main frame can provide operating space for placing of battery promptly, place the accommodation space with the battery with this conveniently in, and the maximum height of main frame is not less than the battery height, can make the main frame provide spacing support for the battery, thereby avoid the battery problem that drops to appear placing the in-process, thereby improve the packaging efficiency of battery package.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery package.

Background

In the related art, the battery pack may include a plurality of batteries, and the batteries may be disposed in a battery case. Due to the structural limitation of the battery box body, the problem of inconvenient installation easily occurs in the process of installing the battery in the battery box body.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack to improve the packaging efficiency of battery pack.

The utility model provides a battery pack, include:

the battery box body comprises a bottom plate and a main frame, the main frame is connected to the bottom plate, and an accommodating space is defined by the main frame and the bottom plate;

the battery sets up in accommodation space, and on the first direction of perpendicular to bottom plate, accommodation space's minimum degree of depth is greater than 0 and is not more than the two-thirds of battery height, and the maximum height of main frame is not less than the battery height.

The utility model discloses battery package includes battery box and battery, and the battery sets up in the accommodation space of battery box. The battery box includes bottom plate and main frame, and the main frame encloses with the bottom plate and becomes to have accommodation space, through making accommodation space's minimum degree of depth be greater than 0 and be not more than the two-thirds of battery height, thereby can make the main frame expose the partly of battery lateral part, the main frame can provide operating space for placing of battery promptly, place the accommodation space with the battery with this conveniently in, and the maximum height of main frame is not less than the battery height, can make the main frame provide spacing support for the battery, thereby avoid the battery to appear the problem that drops at the placement in-process, thereby improve the packaging efficiency of battery package.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views.

Wherein:

fig. 1 is a schematic view illustrating a structure of a battery pack according to an exemplary embodiment;

FIG. 2 is an exploded schematic view of a battery pack according to an exemplary embodiment;

FIG. 3 is a schematic diagram illustrating a partial structure of a battery pack according to an exemplary embodiment;

fig. 4 is a schematic structural view illustrating a bottom plate, a side plate, and a first end plate of a battery pack according to an exemplary embodiment.

The reference numerals are explained below:

10. a battery case; 11. a base plate; 111. a positioning column; 12. a main frame; 121. a side plate; 1211. a first portion; 1212. a second portion; 122. a first end plate; 123. a second end plate; 13. an accommodating space; 14. a partition beam; 141. positioning holes; 15. a cover plate; 20. a battery.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless explicitly specified or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood as a specific case by a person skilled in the art.

Further, in the description of the present disclosure, it should be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

An embodiment of the present invention provides a battery pack, please refer to fig. 1 to 4, the battery pack includes: the battery box body 10 comprises a bottom plate 11 and a main frame 12, wherein the main frame 12 is connected to the bottom plate 11, and an accommodating space 13 is defined by the main frame 12 and the bottom plate 11; the battery 20 is arranged in the accommodating space 13, the minimum depth of the accommodating space 13 is greater than 0 and not greater than two thirds of the height of the battery 20 along a first direction perpendicular to the bottom plate 11, and the maximum height of the main frame 12 is not less than the height of the battery 20.

The utility model discloses a battery package of an embodiment includes battery box 10 and battery 20, and battery 20 sets up in the accommodation space 13 of battery box 10. The battery box 10 comprises a bottom plate 11 and a main frame 12, the main frame 12 and the bottom plate 11 are enclosed to form an accommodating space 13, the minimum depth of the accommodating space 13 is larger than 0 and not larger than two thirds of the height of the battery 20, so that the main frame 12 can expose a part of the side part of the battery 20, namely, the main frame 12 can provide an operating space for the placement of the battery 20, the battery 20 is conveniently placed in the accommodating space 13, the maximum height of the main frame 12 is not smaller than the height of the battery 20, the main frame 12 can provide limiting support for the battery 20, the problem that the battery 20 falls off in the placing process is avoided, and the assembling efficiency of the battery pack is improved.

It should be noted that, the battery pack can include a plurality of batteries 20, and a plurality of batteries 20 can be assembled into the battery module and then placed in accommodation space 13, namely, the battery module is wholly packed into accommodation space 13, because the minimum depth of accommodation space 13 is greater than 0 and is not greater than two-thirds of the height of battery 20, namely, in the process of packing into of battery module, the upper portion of battery module can be used as the portion of grabbing, thereby facilitating the packing into of battery module, and improving the installation efficiency of battery module. Or, since the minimum depth of the accommodating space 13 is greater than 0 and not greater than two-thirds of the height of the battery 20, that is, after the battery module is loaded into the accommodating space 13, the battery module can be positioned by pushing the side of the battery module, so that the mounting accuracy of the battery module is improved, and the mounting efficiency of the battery module is improved.

The plurality of batteries 20 can be directly arranged in the accommodating space 13, that is, the plurality of batteries 20 are not required to be grouped, but the batteries 20 can be independently arranged in the accommodating space 13, accordingly, the minimum depth of the accommodating space 13 is more than 0 and not more than two thirds of the height of the batteries 20, so that the loading and positioning operation of the batteries 20 can be facilitated, and the assembly efficiency of the battery pack can be improved.

The depth of the accommodating space 13 at each position may be uniform, and at this time, the depth of the accommodating space 13 is greater than 0 and not greater than two thirds of the height of the battery 20, so that the main frame 12 may be made to expose the side portions of the plurality of batteries 20. Or, the accommodating space 13 may include sub-spaces with different depths, and at this time, the depth of the sub-space with the minimum depth is greater than 0 and not greater than two thirds of the height of the battery 20, so that on the basis that the battery 20 can be fixed, the battery 20 can be conveniently loaded and positioned, and the assembly efficiency of the battery pack can be improved.

The maximum height of main frame 12 is not less than battery 20 height, the part of main frame 12 can be higher relatively, at this moment, battery 20 can lean on in the higher position of main frame 12, make main frame 12 form spacing to battery 20 from this, for example, first battery 20 can lean on in the higher position of main frame 12, thereby subsequent battery 20 also can not break away from main frame 12, and accommodation space 13's minimum depth is greater than 0 and be not more than the two-thirds of battery 20 height, namely in the packing into-process of battery module, can regard the upper portion of battery module as the portion of snatching, thereby make things convenient for packing into of battery module, synthesize the installation effectiveness that the two advantage improved battery module.

The maximum height of the main frame 12 is not less than the height of the battery 20, so that the main frame 12 can properly limit the battery 20 during battery assembly, and the highest point of the main frame 12 can be used for arranging a lifting point, which is convenient for transportation of the main frame 12. The battery 20 includes a cell and an electrolyte, and is a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.

The battery is the lamination formula battery, and it is convenient not only to organize, and can process and obtain the longer battery of length. Specifically, electric core is lamination formula electric core, and electric core has first pole piece that stacks up each other, with first pole piece opposite electric property's second pole piece and the diaphragm of setting between first pole piece and second pole piece to make many to pile up and form lamination formula electric core to first pole piece and second pole piece.

The battery may be a wound battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a wound battery core.

In one embodiment, the minimum depth of the accommodating space 13 is greater than one fourth of the height of the battery 20, so that the main frame 12 can ensure reliable circumferential fixing of the battery 20, and the problem that the battery 20 is separated after being installed in the accommodating space 13 is avoided, so as to ensure the fixing performance of the battery pack.

The minimum depth of the accommodating space 13 is greater than one fourth of the height of the battery 20 and not greater than two thirds of the height of the battery 20, so that the battery 20 can be conveniently installed and positioned on the basis of realizing reliable circumferential fixation of the battery 20, and the assembly efficiency of the battery pack can be improved.

In one embodiment, the minimum depth of the accommodating space 13 is not more than three fifths of the height of the battery 20, and the size of the exposed side of the battery 20 is not too large on the basis that the main frame 12 can expose the side of the battery 20, so that not only the loading and positioning operation of the battery 20 is facilitated, but also the battery 20 can be reliably fixed after being loaded into the accommodating space 13.

The minimum depth of the accommodating space 13 is greater than one fourth of the height of the battery 20 and not greater than three fifths of the height of the battery 20, so that the battery 20 can be conveniently installed, and the battery 20 can be reliably fixed after the battery 20 is installed.

In one embodiment, as shown in fig. 3 and 4, the main frame 12 includes two side plates 121 disposed oppositely, and the two side plates 121 are respectively connected to two opposite sides of the bottom plate 11; wherein, along the first direction, the minimum height of the side plate 121 is greater than 0 and not greater than two thirds of the height of the battery 20, the two opposite side plates 121 can realize the fixation of the battery 20 and can form the exposure of the battery 20, so that in the process of loading the battery 20, the side plates 121 can form the installation operation space, thereby facilitating the loading of the battery 20, and after the battery 20 is loaded, the side plates 121 can realize the reliable fixation of the battery 20.

In one embodiment, the maximum height of the side plate 121 is not less than the height of the batteries 20 along the first direction, so that the side plate 121 can effectively protect some batteries 20 in the height direction and facilitate the assembly of the batteries 20, and after the batteries 20 are assembled, the side plate 121 can also reliably fix some batteries 20, thereby improving the assembly efficiency of the battery pack.

In one embodiment, as shown in fig. 4, the side plate 121 includes a first portion 1211 and a second portion 1212 connected to each other, a maximum height of the first portion 1211 is not less than a height of the battery 20, and a maximum height of the second portion 1212 is greater than 0 and not greater than two thirds of the height of the battery 20, that is, the first portion 1211 can achieve a secure fixing protection for at least one battery 20, and the second portion 1212 can form a space for avoiding operation during the installation of the battery 20, thereby improving the assembly efficiency of the battery 20.

In one embodiment, the length of the second portion 1212 is greater than the length of the first portion 1211 in a second direction perpendicular to the first direction, which is parallel to the stacking direction of the batteries 20, i.e., the second portion 1212 may form a sufficient escape operation space during the assembly of the batteries 20, thereby facilitating the assembly of the batteries 20 and thus improving the assembly efficiency of the batteries 20.

The stacking direction of the cells 20 may be considered as a direction in which a plurality of cells are arranged in sequence, for example, the large surfaces of two adjacent cells are disposed opposite to each other, in this case, the stacking direction of the cells 20 is perpendicular to the large surfaces of the cells, the stacking direction of the cells 20 is parallel to the second direction, and the length of the second portion 1212 is greater than the length of the first portion 1211 in the second direction perpendicular to the first direction, that is, the number of cells 20 corresponding to the second portion 1212 may be greater than the number of cells 20 corresponding to the first portion 1211, so that the second portion 1212 may form a sufficient space for avoiding operation, thereby facilitating the installation of the cells 20. The first direction may be a height direction of the battery pack, and the second direction may be a length direction of the battery pack.

As shown in connection with fig. 2, the first direction may be denoted as a and the second direction may be denoted as B.

The height of the first portion 1211 may be greater than the height of the battery 20, or the height of the first portion 1211 may be equal to the height of the battery 20.

In one embodiment, as shown in fig. 2 and 4, the main frame 12 further includes a first end plate 122 and a second end plate 123, the first end plate 122 is connected to an end of the second portion 1212 remote from the first portion 1211, and the second end plate 123 is connected to an end of the first portion 1211 remote from the second portion 1212, such that the first end plate 122 and the second end plate 123 are oppositely disposed; the accommodating space 13 is defined by the two opposite side plates 121, the first end plate 122, the second end plate 123 and the bottom plate 11, so that the two side plates 121, the first end plate 122 and the second end plate 123 can reliably fix the plurality of batteries 20, thereby improving the reliable fixation of the battery pack to the batteries 20.

The main frame 12 may be composed of two side plates 121, a first end plate 122 and a second end plate 123, so that circumferential fixing of the plurality of batteries 20 is achieved, and thus the plurality of batteries 20 are reliably fixed in the accommodating space 13, and the two side plates 121 may expose the side portions of the batteries 20, so that the batteries 20 may be conveniently loaded into the accommodating space 13 during the installation of the batteries 20, and thus the installation efficiency of the batteries 20 is improved.

The first and

second end plates

122 and 123 may have a height greater than that of the battery 20, or the first and

second end plates

122 and 123 may have a height equal to that of the battery 20.

In one embodiment, the first end plate 122 and the bottom plate 11 are integrally formed, so that not only the forming efficiency of the first end plate 122 and the bottom plate 11 can be improved, but also the structural strength of the first end plate 122 and the bottom plate 11 can be improved, thereby improving the installation performance of the battery pack.

In one embodiment, the second end plate 123 is detachably connected to the bottom plate 11, so that the second end plate 123 can be removed during maintenance of the battery pack, thereby facilitating the removal of the batteries 20 and improving the maintenance efficiency of the battery pack. The second end plate 123 is detachably connected to the bottom plate 11, so that the second end plate 123 can be formed independently, and the second end plate 123 can be designed according to actual requirements, thereby improving the adaptability of the second end plate 123.

In one embodiment, the first end plate 122 is integrally formed with the base plate 11, and the second end plate 123 is detachably connected with the base plate 11.

In one embodiment, the first end plate 122 is integrally formed with the bottom plate 11, and the second end plate 123 is integrally formed with the bottom plate 11.

In some embodiments, the first end plate 122 is removably coupled to the base plate 11, and the second end plate 123 is removably coupled to the base plate 11.

In one embodiment, the side plates 121 and the bottom plate 11 are integrally formed, so that the forming efficiency of the side plates 121 and the bottom plate 11 can be improved, and the structural strength of the side plates 121 and the bottom plate 11 can be improved, thereby improving the installation performance of the battery pack.

In one embodiment, the first end panel 122, the two side panels 121, and the bottom panel 11 are of an integrally formed structure.

In one embodiment, as shown in fig. 3, the battery box 10 further includes a partition beam 14, the partition beam 14 is disposed in the accommodating space 13 to partition the accommodating space 13, and the batteries 20 are disposed on two opposite sides of the partition beam 14, so that at least two groups of batteries 20 can be disposed on two sides of the partition beam 14 to meet the capacity requirement of the battery pack.

In one embodiment, the height of the separation beam 14 is greater than one ninth of the height of the battery 20 and not less than two thirds of the height of the battery 20 along the first direction, so that the separation beam 14 can fix and limit the battery 20 without damaging the battery 20, and the space above the separation beam 14 can be used for heat exchange of the battery 20, thereby improving the safety performance of the battery 20.

In one embodiment, the partition beams 14 are detachably coupled to the base plate 11, so that the coupling and the decoupling of the partition beams 14 and the base plate 11 can be facilitated, and the removal of the batteries 20 can be assisted when the battery pack is subsequently serviced.

In one embodiment, as shown in fig. 3, the partition beam 14 is provided with a positioning hole 141, the bottom plate 11 is provided with a positioning post 111, and the positioning post 111 is inserted into the positioning hole 141, so that the partition beam 14 is detachably connected to the bottom plate 11, and the assembling efficiency of the partition beam 14 can be improved, so that the partition beam 14 can well limit the battery 20.

In one embodiment, the partition beam 14 may be provided with a positioning hole 141, and the positioning hole 141 may be a tool fitting hole, for example, when the battery pack is assembled, the auxiliary tool may be fixed to the partition beam 14 through the positioning hole 141, and after the battery in the battery pack is assembled, the auxiliary tool may be removed from the positioning hole 141.

It should be noted that, in some embodiments, it is not excluded that the positioning hole 141 may be used for being connected to the positioning column 111 on the bottom plate 11 and may also be used for matching with an auxiliary tool, for example, when the depth of the positioning hole 141 is greater than that of the positioning column 111, the positioning column 111 occupies a part of the height of the positioning hole 141, and therefore, the remaining part of the positioning hole 141 may be used for installing the auxiliary tool.

In one embodiment, the partition beam 14 is provided with a plurality of positioning holes 141, the bottom plate 11 is provided with a plurality of positioning pillars 111, and the plurality of positioning pillars 111 are inserted into the plurality of positioning holes 141, so as to achieve reliable connection between the partition beam 14 and the bottom plate 11.

In one embodiment, as shown in fig. 1 and 2, the battery case 10 further includes a cover plate 15, the cover plate 15 is connected to the main frame 12, and a portion of the cover plate 15 is disposed opposite to the base plate 11, so that the cover plate 15 can reliably protect the battery 20.

The cover plate 15 can protect the exposed position of the battery 20 on the main frame 12, so as to reliably protect the battery 20 and prevent the battery 20 from being damaged by the outside. The cover plate 15 may be connected to the two side plates 121, the first end plate 122, and the second end plate 123, so that the cover plate 15 may be securely fixed.

It should be noted that in some embodiments, the battery pack may not include the cover plate 15, that is, the battery pack may be an open-top structure, for example, the battery pack may be placed in the energy storage box. Alternatively, in some embodiments, the cover 15 may be a chassis of the vehicle, or the like, to provide protection to the battery 20.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery pack, comprising:

the battery box body (10), the battery box body (10) comprises a bottom plate (11) and a main frame (12), the main frame (12) is connected to the bottom plate (11), and an accommodating space (13) is enclosed by the main frame (12) and the bottom plate (11);

the battery (20) is arranged in the accommodating space (13), the minimum depth of the accommodating space (13) is greater than 0 and not greater than two thirds of the height of the battery (20) along a first direction perpendicular to the bottom plate (11), and the maximum height of the main frame (12) is not less than the height of the battery (20).

2. A battery pack according to claim 1, wherein the minimum depth of the receiving space (13) is greater than one quarter of the height of the battery (20) and/or the minimum depth of the receiving space (13) is not greater than three fifths of the height of the battery (20).

3. The battery pack according to claim 1, wherein the main frame (12) includes two side plates (121) disposed oppositely, the two side plates (121) being connected to opposite sides of the bottom plate (11), respectively;

wherein, in the first direction, the minimum height of the side plate (121) is greater than 0 and not greater than two-thirds of the height of the battery (20).

4. The battery pack according to claim 3, wherein the maximum height of the side plate (121) in the first direction is not less than the height of the battery (20).

5. The battery pack according to claim 4, wherein the side plate (121) comprises a first portion (1211) and a second portion (1212) connected, the first portion (1211) having a maximum height not less than the height of the battery (20), the second portion (1212) having a maximum height greater than 0 and not greater than two thirds of the height of the battery (20);

wherein a length of the second portion (1212) is greater than a length of the first portion (1211) in a second direction perpendicular to the first direction, the second direction being parallel to a stacking direction of the batteries (20).

6. The battery pack of claim 5, wherein the main frame (12) further comprises a first end plate (122) and a second end plate (123), the first end plate (122) being connected to an end of the second portion (1212) distal from the first portion (1211), the second end plate (123) being connected to an end of the first portion (1211) distal from the second portion (1212), such that the first end plate (122) and the second end plate (123) are oppositely disposed;

the two opposite side plates (121), the first end plate (122), the second end plate (123) and the bottom plate (11) enclose the accommodating space (13).

7. The battery pack according to claim 6, wherein the first end plate (122) is of an integrally formed structure with the bottom plate (11), and/or the second end plate (123) is detachably connected with the bottom plate (11), and/or the side plate (121) is of an integrally formed structure with the bottom plate (11).

8. The battery pack according to any one of claims 1 to 7, wherein the battery case (10) further comprises a partition beam (14), the partition beam (14) being provided in the accommodating space (13) to partition the accommodating space (13), the partition beam (14) being provided with the batteries (20) on opposite sides thereof;

wherein, in the first direction, the height of the separation beam (14) is greater than one ninth of the height of the battery (20) and not less than two thirds of the height of the battery (20).

9. The battery pack according to claim 8, wherein the partition beam (14) is detachably attached to the bottom plate (11), and/or wherein a positioning hole (141) is provided on the partition beam (14).

10. The battery pack according to any one of claims 1 to 7, wherein the battery case (10) further comprises a cover plate (15), the cover plate (15) is connected to the main frame (12), and a portion of the cover plate (15) is disposed opposite to the base plate (11).