CN219917438U

CN219917438U - Battery and electric equipment

Info

Publication number: CN219917438U
Application number: CN202321705690.1U
Authority: CN
Inventors: 程振醒; 杜俊丰; 金佺良
Original assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2023-10-27
Anticipated expiration: 2033-06-30

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and electric equipment, wherein the battery comprises: the battery cell assembly, the box body and at least one pressing strip; the box body is provided with an accommodating cavity for accommodating the battery cell assembly, the box body comprises a bottom plate, a middle cross beam and two end cross beams which are used for forming the accommodating cavity and are oppositely arranged at intervals along a first direction, and the middle cross beam is fixed in the accommodating cavity and divides the accommodating cavity into a plurality of sub accommodating cavities; the layering part crimping is in the upper surface of electric core subassembly, and the layering has at least one towards the sunken mounting groove of bottom plate, and the both ends of layering are fixed at tip crossbeam upper surface, and the middle crossbeam inserts in the mounting groove so that the diapire butt of mounting groove is at the lower surface of middle crossbeam. Therefore, in the battery provided by the utility model, the layering structure is designed, and the battery core is fixed in the box body through the process of screwing or crimping with the cross beam, so that the battery core can be disassembled, the weight of the whole battery is reduced, and the energy density of the whole battery is improved.

Description

Battery and electric equipment

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery and electric equipment.

Background

At present, the CTP battery pack (i.e. the battery pack without a module, that is to say, the battery core is directly integrated into the battery pack) on the market is usually fixed by adopting a glue-beating/pressing strip fixing mode, and the following defects exist in the two modes that the battery core cannot be dismounted and maintained at higher cost in the later stage of the glue-beating mode, and the pressing strip mode has high weight and does not benefit to the light weight of the battery pack, so that a fixing structure which can not only meet the dismounting of the battery core, but also reduce the weight is urgently needed to be designed.

Disclosure of Invention

The utility model aims to provide a battery and electric equipment, which solve the technical problems that the design of a fixed structure which is suitable for being applied to CTP battery packs and can not only meet the detachability of an electric core but also reduce the weight is needed to a certain extent in the prior art.

The present utility model provides a battery comprising: the battery cell assembly, the box body and at least one pressing strip;

the box body is provided with a containing cavity for containing the battery cell assembly, the box body comprises a bottom plate, a middle cross beam and two end cross beams, the two end cross beams are used for forming the containing cavity and are oppositely arranged at intervals along a first direction, and the middle cross beam is used for fixing the containing cavity and dividing the containing cavity into a plurality of sub containing cavities;

the layering part crimping is in the upper surface of electric core subassembly, the layering has at least one orientation the sunken mounting groove of bottom plate, the both ends of layering are fixed the tip crossbeam upper surface, the middle crossbeam inserts in the mounting groove so that the diapire butt of mounting groove is in the lower surface of middle crossbeam.

In the above technical scheme, further, the pressing strip comprises a pressing strip body and fixing parts connected to two ends of the pressing strip body, wherein the fixing parts are fixed on the upper surface of the end beam through first fasteners; the layering body includes recess portion and connect in the crimping portion at recess portion both ends, crimping portion crimping is in the upper surface of electric core subassembly.

In any of the above technical solutions, further, the number of the pressing strips is multiple, and the pressing strips include a first pressing strip and a second pressing strip, the first pressing strip is in press connection with the middle of the upper surface of the battery cell assembly, the second pressing strip is in press connection with the upper edge of the battery cell assembly, and the section of the press connection part of the second pressing strip is in an L shape.

In any of the foregoing solutions, further, the cell assembly includes a plurality of cells arranged along a second direction, each cell module including a plurality of cells stacked along the first direction, the second direction being perpendicular to the first direction; the first pressing strips are simultaneously pressed against the side edges of two adjacent battery cell modules, and the section of the pressing connection part of the first pressing strips is T-shaped.

In any of the above-mentioned aspects, further, a cross section of the pressure-bonding section of the first bead is in a straight shape.

In any of the above technical solutions, further, the molding body and the fixing portion are integrally formed metal pieces, and an insulating layer is wrapped on an outer surface of the molding body.

In any of the above technical solutions, further, the middle beam is provided with two first grooves arranged at intervals, the middle beam is provided with a through hole penetrating through the bottom of the first grooves, the second fastening piece passes through the through hole and is fixed on the bottom plate, and the upper end part of the second fastening piece does not protrude out of the top of the middle beam.

In any of the above technical solutions, further, the middle cross beam is a section bar, the section bar has a plurality of partition walls distributed at intervals along a direction perpendicular to the bottom plate, and the bottom of the first groove is located on one of the partition walls.

In any of the above technical solutions, further, a first mounting hole is formed in the top of the end beam, a second mounting hole is formed in the pressing bar, and a third fastener passes through the second mounting hole and stretches into the first mounting hole, so that the pressing bar is fixed on the end beam.

The utility model also provides electric equipment, which comprises the battery according to any one of the technical schemes, so that the electric equipment has all the beneficial technical effects of the battery, and the details are not repeated here.

Compared with the prior art, the utility model has the beneficial effects that:

in the battery provided by the utility model, the layering structure is designed, and the battery core is fixed in the box body through the process of screwing or crimping between the layering structure and the cross beam, so that the battery core can be disassembled, the weight of the whole bag is reduced, and the energy density of the whole bag is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model 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, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a battery according to an embodiment of the present utility model;

fig. 2 is a schematic view of another structure of a battery according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along section A-A of FIG. 2;

FIG. 4 is an enlarged schematic view of FIG. 3 at B;

fig. 5 is a schematic view of a partial structure of a battery according to an embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of FIG. 5 at C;

FIG. 7 is an enlarged schematic view of FIG. 5 at D;

fig. 8 is a schematic structural view of a strapping tape according to an embodiment of the present utility model;

fig. 9 is a schematic view of another structure of a strapping band in accordance with an embodiment of the present utility model.

Reference numerals:

1-box, 11-end beam, 12-middle beam, 121-first groove, 2-layering, 21-first layering, 22-second layering, 23-groove part, 24-crimping part, 25-fixed part, 3-first fastener, 4-second fastener, 5-fourth fastener, 6-cell assembly, 61-cell module.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model 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 utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, 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 describing the present utility model and simplifying 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 utility model. 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 utility model, 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 above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A battery and a powered device according to some embodiments of the utility model are described below with reference to fig. 1 to 9.

Example 1

Referring to fig. 1 to 6, an embodiment of the present utility model provides a battery including: the battery cell assembly 6, the box body 1 and at least one pressing bar 2;

the case 1 has a housing chamber for housing the battery cell assembly 6, and the case 1 includes a bottom plate, a middle cross member 12, and two end cross members 11 for forming the housing chamber and arranged at opposite intervals along a first direction, the middle cross member 12 fixing the housing chamber and dividing the housing chamber into a plurality of sub-housing chambers;

the pressing strip 2 is partially pressed on the upper surface of the battery cell assembly 6, the pressing strip 2 is provided with at least one installation groove which is sunken towards the bottom plate, two ends of the pressing strip 2 are fixed on the upper surface of the end cross beam 11, and preferably, two ends of the pressing strip 2 are detachably fixed on the upper surface of the end cross beam 11, and the middle cross beam 12 is inserted into the installation groove so that the bottom wall of the installation groove is abutted against the lower surface of the middle cross beam 12, and the functions of installing and supporting the middle cross beam 12 are achieved.

Based on the above-described structure, the pressing bar 2, the end cross beam 11 and the middle cross beam 12 are assembled together, so that the battery cell can be fixed in the box body 1, the disassembly of the battery cell is satisfied, the weight of the whole bag is reduced, and the energy density of the whole bag is improved.

In this embodiment, preferably, as shown in fig. 7 to 9, the molding 2 includes a molding body and fixing parts 25 connected to both ends of the molding body, the fixing parts 25 being fixed to the upper surface of the end cross member 11 by the first fastening members 3, thereby achieving assembly of the molding 2 and the end cross member 11, and being a detachable connection manner, convenient for installation and detachment;

the layering body includes recess 23 and connects the crimping portion 24 at recess 23 both ends, and crimping portion 24 crimping is at the upper surface of electric core subassembly 6, and crimping portion 24 plays the effect of fixed electric core subassembly 6 upper surface, and the inside of recess 23 is used for installing middle crossbeam 12, and the outer wall of recess 23 then is used for the lateral part of fixed electric core subassembly 6.

Further, it is preferable that the fixing portion 25 has an L-shaped structure as shown in fig. 7, and since the top of the cell is higher than the top of the end beam 11, the fixing portion 25 fixed to the end beam 11 is designed to have an L-shaped structure so as to be connected to the press-contact portion 24 at the top of the cell.

Further, it is preferable that the first fastener 3 is a screw or a bolt or the like as shown in fig. 7, and of course, not limited thereto, the fixing portion 25 may be connected to the end cross member 11 by a crimping process (i.e., a process of applying pressure to effect bonding by friction or heating a metal bonding portion).

Further, preferably, the top of the end beam 11 is provided with a first mounting hole, the fixing portion 25 of the molding 2 is provided with a second mounting hole, and the third fastener, that is, the aforementioned first fastener 3, passes through the second mounting hole and protrudes into the first mounting hole to fix the molding 2 on the end beam 11.

In this embodiment, preferably, as shown in fig. 1, 5, 8 and 9, the number of the plurality of pressing bars 2 is plural, and the plurality of pressing bars 2 includes a first pressing bar 21 and a second pressing bar 22, the first pressing bar 21 is pressed against the middle part of the upper surface of the cell assembly 6, the second pressing bar 22 is pressed against the upper edge of the cell assembly 6, and the section of the pressing portion 24 of the second pressing bar 22 is L-shaped.

According to the above-described structure, the battery cell assembly 6 is rectangular, and the compression strips 2, i.e., the second compression strips 22, located at two ends of the battery cell assembly 6 along the width direction of the battery cell assembly 6 have the compression joint 24 with an L-shaped structure, so that the top of the battery cell can be fixed, and the end of the battery cell along the length direction can be fixed, thereby achieving better fixing effect. Along the width direction of the cell assembly 6, the top of the region between the two ends only needs to be fixed by the first pressing strip 21. Of course, the shape of the battery cell assembly 6 can also be adjusted according to actual needs, and correspondingly, the number of the second pressing strips 22 can also be adjusted according to actual needs.

And further, preferably, as shown in fig. 8, the section of the pressing part 24 of the first pressing bar 21 is a straight shape, and can be pressed on the top of the cell assembly 6, so as to fix the cell assembly 6.

Further, preferably, as shown in fig. 1, the cell assembly 6 includes a plurality of cell modules 61 arranged in a second direction, each cell module 61 including a plurality of cells stacked in a first direction, the second direction being perpendicular to the first direction; the crimp portion 24 of the first compression bar 21 simultaneously compresses the upper surfaces of the adjacent two of the cell modules 61.

In this embodiment, preferably, as shown in fig. 8, the molding body and the fixing portion 25 are integrally formed metal pieces, so that the overall strength is high, and in addition, the insulating layer wraps the outer surface of the molding body, so as to perform an insulating function and avoid short circuits.

Further, the molding 2 may be formed by bending a regular rectangular strip-shaped metal sheet, and other structures and forming methods may be adopted.

In this embodiment, preferably, as shown in fig. 6, the middle beam 12 is provided with two first grooves 121 disposed at intervals, the middle beam 12 is provided with a through hole penetrating the bottom of the first grooves 121, the second fastening member 4 is fixed to the bottom plate through the through hole, and the upper end portion of the second fastening member 4 does not protrude from the top of the middle beam 12.

According to the above-described structure, the middle cross member 12 is fixed on the bottom plate by the second fastening member 4, and the second fastening member 4 is a detachable connection structure, so that the second fastening member 4 can be conveniently installed and detached, and the second fastening member 4 can be hidden in the first groove 121, thus not occupying excessive space and being beneficial to improving the energy density of the battery pack.

Further, preferably, the second fastener 4 is a screw or a bolt or the like.

In this embodiment, the intermediate beam 12 is preferably a profile, having a certain strength, meeting the assembly requirements, and being lightweight, contributing to a lightweight design.

The profile has a plurality of dividing walls spaced apart in a direction perpendicular to the base plate, the bottom of the first recess 121 being located on one of the dividing walls, and the dividing wall being adapted to hold a second fastener 4, such as a nut of a bolt or the like.

In this embodiment, the end cross member 11 may be preferably fixed to the base plate by a fourth fastener 5 such as a screw or a bolt as shown in fig. 7, but of course, not limited thereto, but may be fixed by other fixing means.

Example two

The battery in this embodiment is an improvement based on the first embodiment, and the technical content disclosed in the first embodiment is not repeated, and the disclosure of the first embodiment also belongs to the disclosure of this embodiment.

In this embodiment, preferably, the cell assembly comprises a plurality of cells arranged in a second direction, each cell module comprising a plurality of cells stacked in a first direction, the second direction being perpendicular to the first direction; the first pressing strip is simultaneously pressed against the side edges of two adjacent battery cell modules, and the section of the pressing part of the first pressing strip is T-shaped (not shown in the figure).

According to the above-described structure, the lateral extension portion of the T-shaped crimping portion can be just pressed at the top of two adjacent cell modules, and the longitudinal extension portion of the T-shaped crimping portion can be just pressed at the side portions of two adjacent cell modules, that is, the T-shaped crimping portion can fix two cell modules at the same time.

Example III

The second embodiment of the present utility model also provides a battery pack including the battery according to the first embodiment, so that the battery pack has all the beneficial technical effects of the battery, and the same technical features and beneficial effects are not repeated.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will 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 utility model.

Claims

1. A battery, comprising: the battery cell assembly, the box body and at least one pressing strip;

2. The battery of claim 1, wherein the molding comprises a molding body and fixing portions connected to both ends of the molding body, the fixing portions being fixed to the upper surface of the end beam by first fasteners; the layering body includes recess portion and connect in the crimping portion at recess portion both ends, crimping portion crimping is in the upper surface of electric core subassembly.

3. The battery of claim 2, wherein the number of the pressing strips is a plurality, and the pressing strips comprise a first pressing strip and a second pressing strip, the first pressing strip is pressed and connected to the middle part of the upper surface of the cell assembly, the second pressing strip is pressed and connected to the upper edge of the cell assembly, and the section of the pressing and connecting part of the second pressing strip is L-shaped.

4. The battery of claim 3, wherein the cell assembly comprises a plurality of cell modules arranged in a second direction, each cell module comprising a plurality of cells stacked in the first direction, the second direction being perpendicular to the first direction; the first pressing strips are simultaneously pressed against the side edges of two adjacent battery cell modules, and the section of the pressing connection part of the first pressing strips is T-shaped.

5. The battery of claim 3, wherein the crimp portion of the first bead is in a cross-section of a straight shape.

6. The battery of claim 2, wherein the bead body and the fixing portion are integrally formed metal pieces, and an insulating layer is wrapped on the outer surface of the bead body.

7. The battery according to claim 1, wherein the middle cross beam is provided with two first grooves which are arranged at intervals, the middle cross beam is provided with a through hole which penetrates through the bottom of the first grooves, a second fastener penetrates through the through hole to be fixed on the bottom plate, and the upper end part of the second fastener does not protrude out of the top of the middle cross beam.

8. The battery of claim 7, wherein the intermediate beam is a profile having a plurality of partition walls spaced apart in a direction perpendicular to the bottom plate, and the bottom of the first recess is located on one of the partition walls.

9. The battery of claim 1, wherein the top of the end beam is provided with a first mounting hole, the bead is provided with a second mounting hole, and a third fastener passes through the second mounting hole and extends into the first mounting hole to secure the bead to the end beam.

10. A powered device comprising a battery as claimed in any one of claims 1-9.