CN220710490U - Battery module and electronic product - Google Patents

Abstract

The application relates to the technical field of batteries, in particular to a battery module and an electronic product, wherein the battery module comprises a first arc-shaped electric core, a connecting assembly and a second arc-shaped electric core which are sequentially arranged, and the first arc-shaped electric core and the second arc-shaped electric core are respectively and electrically connected with the connecting assembly; the outer side of the first arc-shaped battery cell is a first cambered surface, the outer side of the connecting component is a second cambered surface, the outer side of the second arc-shaped battery cell is a third cambered surface, and the first cambered surface, the second cambered surface and the third cambered surface are spliced to form a curved surface when the first arc-shaped battery cell and the second arc-shaped battery cell are in a state of being connected with the connecting component. According to the battery module and the electronic product provided by the application, the space utilization rate of the inside of the shell of the electronic product is improved, the amount of filler arranged in the gap between the battery module and the shell is reduced, the heat dissipation effect of the battery module is improved, and the production cost of the electronic product is reduced.

Description

Battery module and electronic product

Technical Field

The application relates to the technical field of batteries, in particular to a battery module and an electronic product.

Background

With the rapid development of electronic products, the shape of the electronic products is not limited to cubes, and in order to improve the appearance of the electronic products, electronic products adopting a shell with a curved surface structure are gradually increased.

Meanwhile, the conventional flat battery module (for example, CN106531914a disclosed in chinese patent document is a square battery module; for example, CN204991808U disclosed in chinese patent document is a square battery module) is difficult to adapt to the shape of the outer casing of the electronic product adopting the curved surface structure, so that a larger gap is formed between the battery module and the outer casing of the electronic product, on one hand, during the use of the electronic product, the battery module is easy to shake in the casing, resulting in poor electrical contact of the electronic product; on the other hand, the space inside the housing of the electronic product is wasted. In addition, in order to ensure the setting stability of the battery module, a filler is generally arranged in a gap between the battery module and the shell, so that the heat dissipation of the battery module is affected, and the production cost of an electronic product is increased.

Disclosure of Invention

The utility model aims to provide a battery module and an electronic product, which are used for solving the problem that the conventional flat battery module in the prior art is difficult to adapt to the shape of the shell of the electronic product adopting the curved surface structure to a certain extent, so that a large gap is formed between the battery module and the shell of the electronic product, and on one hand, in the use process of the electronic product, the battery module is easy to shake in the shell to cause the electric contact of the electronic product to be not tight; on the other hand, the space inside the shell of the electronic product is wasted. In addition, in order to ensure the setting stability of the battery module, a filler is generally arranged in a gap between the battery module and the shell, so that the heat dissipation of the battery module is affected, and the technical problem of the production cost of electronic products is improved.

According to a first aspect of the application, a battery module is provided, which comprises a first arc-shaped electric core, a connecting component and a second arc-shaped electric core which are sequentially arranged, wherein the first arc-shaped electric core and the second arc-shaped electric core are respectively and electrically connected with the connecting component;

the outer side of the first arc-shaped battery cell is a first cambered surface, the outer side of the connecting component is a second cambered surface, the outer side of the second arc-shaped battery cell is a third cambered surface, and the first cambered surface, the second cambered surface and the third cambered surface are spliced to form a curved surface when the first arc-shaped battery cell and the second arc-shaped battery cell are in a state of being connected with the connecting component.

Preferably, the connection assembly comprises a battery protection plate, the battery protection plate comprises a plate body, a first connection portion and a second connection portion, the first connection portion and the second connection portion are both arranged on the plate body, the first arc-shaped electric core is electrically connected with the connection assembly through the first connection portion, and the second arc-shaped electric core is electrically connected with the connection assembly through the second connection portion.

Preferably, the first connection portion and the second connection portion are respectively disposed at two opposite side surfaces of the plate body.

Preferably, the first arc-shaped electric core comprises a first electric core body, a first connecting lug and a second connecting lug, the first connecting lug and the second connecting lug are both arranged at the end part of one side, close to the connecting assembly, of the first electric core body, and the first connecting lug and the second connecting lug are respectively connected with the first connecting part;

the second arc-shaped battery cell comprises a second battery cell body, a third connecting lug and a fourth connecting lug, wherein the third connecting lug and the fourth connecting lug are both arranged at the end part of one side, close to the connecting assembly, of the second battery cell body, and the third connecting lug and the fourth connecting lug are respectively connected with the second connecting part.

Preferably, a portion of at least one of the first and second cell bodies is disposed in overlapping relation with the plate body;

the connection assembly further includes an insulating adhesive layer disposed between the portion and the plate body.

Preferably, the connection assembly further comprises an insulating coating part, and the battery protection plate, the first connection lug, the second connection lug, the third connection lug and the fourth connection lug are all coated in the insulating coating part.

Preferably, the battery protection plate further comprises an external connection part, one end of the external connection part is connected with the plate body, and the other end of the external connection part extends from one end of the plate body to the outside of the insulating coating part.

Preferably, the thicknesses of the first arc-shaped battery cell, the connecting assembly and the second arc-shaped battery cell are equal.

Preferably, the curved surface is a cylindrical surface;

the central angle corresponding to the cylindrical surface is alpha, wherein alpha is more than 0 degrees and less than or equal to 180 degrees.

According to a second aspect of the present application, an electronic product is provided, which includes the battery module according to any one of the above-mentioned technical schemes, so that the electronic product has all the beneficial technical effects of the battery module, and further description is omitted herein.

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

the battery module that this application provided, first arc electric core and second arc electric core are both connected through the coupling assembling electricity, realize the electricity of each electric core of battery module and be connected, and the lateral surface of first arc electric core (first cambered surface promptly), the lateral surface of coupling assembling (second cambered surface promptly) and the lateral surface of second arc electric core (third cambered surface promptly) three are on same smooth cambered surface, so, the lateral wall that battery module can adapt to the shell of the curved surface structure of electronic product better, make the gap between battery module and the shell of curved surface structure reduce effectively, even can make battery module and the laminating of the shell of curved surface structure, and then improve the space utilization of the inside shell of electronic product, reduce the quantity that sets up the filler in the gap between battery module and the casing, the radiating effect of battery module has been improved, the manufacturing cost of electronic product has been reduced.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

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 diagram of an axial measurement structure of a battery module according to an embodiment of the present disclosure;

fig. 2 is an exploded view of a battery module according to an embodiment of the present disclosure;

fig. 3 is a schematic axial structural view of a hidden insulating coating portion of a battery module according to an embodiment of the present disclosure;

fig. 4 is an enlarged schematic view of the battery module provided in fig. 3 at a;

fig. 5 is a schematic rear view of a battery module according to an embodiment of the present disclosure;

fig. 6 is a schematic bottom view of a battery module according to an embodiment of the present disclosure.

Reference numerals:

1-a first arc-shaped battery cell; 11-a first top; 12-a first ear; 121-a first connection lug; 122-a second connecting ear; 13-a first cell body; 2-a second arc-shaped battery cell; 21-a second top; 22-a second ear; 221-a third connecting ear; 222-fourth connecting lugs; 23-a second cell body; a 3-connection assembly; 310-plate body; 311-first connection; 312-a second connection; 32-insulating coating; 33-an external connection part; 34-an insulating adhesive layer;

f1-a first direction; f2-a second direction; f3-third direction.

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.

The following describes a battery module and an electronic product according to some embodiments of the present application with reference to fig. 1 to 6.

Referring to fig. 1 to 6, an embodiment of a first aspect of the present application provides a battery module, which includes a first arc-shaped electric core 1, a connection assembly 3, and a second arc-shaped electric core 2 sequentially disposed, wherein the first arc-shaped electric core 1 and the second arc-shaped electric core 2 are electrically connected with the connection assembly 3, respectively;

the outer side of the first arc-shaped battery cell 1 is a first cambered surface, the outer side of the connecting component is a second cambered surface, the outer side of the second arc-shaped battery cell 2 is a third cambered surface, and the first cambered surface, the second cambered surface and the third cambered surface are spliced to form a curved surface when the first arc-shaped battery cell 1 and the second arc-shaped battery cell 2 are in a state of being connected with the connecting component 3.

According to the technical characteristics, the first arc-shaped battery cell 1 and the second arc-shaped battery cell 2 are electrically connected through the connecting component 3, so that the electric connection of each battery cell of the battery module is realized, the outer side surface (namely the first cambered surface) of the first arc-shaped battery cell 1, the outer side surface (namely the second cambered surface) of the connecting component 3 and the outer side surface (namely the third cambered surface) of the second arc-shaped battery cell 2 are arranged on the same curved surface, the outer side wall of the battery module can better adapt to the shell of the curved surface structure of the electronic product, the gap between the battery module and the shell of the curved surface structure is effectively reduced, even the battery module is attached to the shell of the curved surface structure, the space utilization rate of the inner part of the shell of the electronic product is improved, the quantity of filler is arranged in the gap between the battery module and the shell is reduced, the radiating effect of the battery module is improved, and the production cost of the electronic product is reduced.

It should be noted that when the first cambered surface, the second cambered surface and the third cambered surface are spliced, a splicing gap exists at the splicing position, so that the curved surfaces are not continuous curved surfaces. The first cambered surface, the second cambered surface and the third cambered surface are the same cambered surfaces.

Referring to fig. 1 to 6, a direction shown by F1 in the drawing may be an example of the first direction F1, a direction shown by F2 in the drawing may be an example of the second direction F2, and a direction shown by F3 in the drawing may be an example of the third direction F3. Preferably, any two of the first direction F1, the second direction F2, and the third direction F3 are perpendicular.

Preferably, the connection assembly 3 may include a battery protection plate (Protective Circuit Module, PCM for short) that may include a plate body 310, a first connection part 311, and a second connection part 312, both of which are provided at the plate body 310, and the above-described first arc-shaped battery cell 1 is electrically connected with the connection assembly 3 via the first connection part 311. Correspondingly, the second arc-shaped battery cell 2 is electrically connected with the connecting component 3 through the second connecting part 312, so that the first arc-shaped battery cell 1 and the second arc-shaped battery cell 2 are respectively electrically connected with the connecting component 3.

Preferably, as shown in fig. 3 to 6, the first connection portion 311 and the second connection portion 312 may be disposed at two opposite sides of the board body 310, respectively, so that the space of the board body 310 can be effectively saved, and the distance of the connection assembly 3 in the third direction F3 can be reduced.

Alternatively, as shown in fig. 2, the first connecting portion 311 may include two tabs disposed at intervals along the first direction F1, so that the first connecting portion 311 can be connected to the first connecting tab 121 and the second connecting tab 122, which will be described below, respectively.

Correspondingly, as shown in fig. 6, the second connecting portion 312 may also include two tabs disposed at intervals along the first direction F1, so that the second connecting portion 312 can be connected to the third connecting lug 221 and the fourth connecting lug 222 described below.

Preferably, as shown in fig. 2, the first arc-shaped battery cell 1 may include a first battery cell body 13 and a first ear portion 12, and the first ear portion 12 may be disposed at an end of the first battery cell body 13 near to the side of the connection assembly 3, so as to facilitate connection of the first arc-shaped battery cell 1.

Optionally, as shown in fig. 2, the first arc-shaped battery cell 1 may further include a first top 11, where the first top 11 may be disposed at an end of the first battery cell body 13 on a side close to the connection assembly 3, and the first ear 12 may be disposed on a side of the first top 11 opposite to the first battery cell body 13 in the third direction F3. The thickness of the first top 11 may be smaller than that of the first battery cell body 13, so as to facilitate packaging of the insulating coating 32 described below.

Preferably, as shown in fig. 2, the first ear portion 12 may include a first connection tab 121 and a second connection tab 122 disposed at intervals along the first direction F1, one of the first connection tab 121 and the second connection tab 122 may be a positive tab drawn from the positive electrode of the first arc cell 1, and the other of the first connection tab 121 and the second connection tab 122 may be a negative tab drawn from the negative electrode of the first arc cell 1, so that both the first arc cell 1 and the connection assembly 3 may form a complete charge/discharge circuit.

Similarly, as shown in fig. 2, the second arc-shaped battery cell 2 may also include a second battery cell body 23 and a second ear portion 22, where the second ear portion 22 may be disposed at an end of the second battery cell body 23 near the side of the connection assembly 3, so as to facilitate connection of the second arc-shaped battery cell 2.

Similarly, as shown in fig. 2, the second arc-shaped battery cell 2 may further include a second top 21, where the second top 21 may be disposed at an end of the second battery cell body 23 on a side close to the connection assembly 3, and the second ear 22 may be disposed on a side of the second top 21 opposite to the second battery cell body 23 in the third direction F3. The thickness of the second top 21 may be smaller than that of the second battery cell body 23, so as to facilitate packaging of the insulating coating 32 described below.

Similarly, as shown in fig. 6, the second ear portion 22 may include a third connection ear 221 and a fourth connection ear 222 disposed at intervals along the first direction F1, one of the third connection ear 221 and the fourth connection ear 222 may be a positive electrode ear drawn from the positive electrode of the second arc cell 2, and the other of the third connection ear 221 and the fourth connection ear 222 may be a negative electrode ear drawn from the negative electrode of the second arc cell 2, so that both the second arc cell 2 and the connection assembly 3 can form a complete charge/discharge circuit.

It should be noted that, the first top 11 may be understood as a top seal of the first arc-shaped electrical core 1, the second top 21 may be understood as a top seal of the second arc-shaped electrical core 2, and the structure of the top seal of the electrical core is a prior art in the art and will not be described herein.

Referring to fig. 5, in order to facilitate the illustration of the connection structure inside the connection assembly 3, the insulating coating portion 32 described below is subjected to a transparentization process, and the structure of the external connection portion 33 described below is hidden. In an embodiment, as shown in fig. 5, the first top 11 and the plate body 310 are overlapped in the second direction F2, so that on one hand, the lap stability of the connection assembly 3 and the first arc-shaped battery cell 1 is effectively increased; on the other hand, the dimension of the connection assembly 3 in the third direction F3 is further shortened.

Preferably, as shown in fig. 5, the connection assembly 3 may further include an insulation paste layer 34, wherein the insulation paste layer 34 is disposed between the first top 11 and the board body 310, and on one hand, the first top 11 and the board body 310 are fixed by using the adhesion of the insulation paste layer 34, so as to facilitate the encapsulation fixation of the insulation clad layer described below; on the other hand, by utilizing the insulation property of the insulating adhesive layer, both the first top 11 and the board body 310 are effectively insulated.

Alternatively, the insulating adhesive layer may be an adhesive insulating material, such as aramid paper.

However, the present application is not limited to the overlapping form of the first top 11 and the plate body 310, and the second top may also overlap the plate body in the second direction (not shown in the drawings), so long as the structure of the first arc-shaped battery cell 1 and the second arc-shaped battery cell 2 can be adapted, and the size requirement of the battery module can be met, and the overlapping structure of the second top and the plate body is similar to the overlapping structure of the first top and the plate body, which is not repeated herein.

In an embodiment, preferably, as shown in fig. 1 and 2, the connection assembly 3 may further include an insulating coating portion 32, where the battery protection plate, the first connection ear 121, the second connection ear 122, the third connection ear 221, the fourth connection ear 222, and the first top 11 and the second top 21 may be all coated in the insulating coating portion 32, so as to ensure insulation of the connection assembly 3, ensure stability of electrical connection of the first arc-shaped battery cell 1, the second arc-shaped battery cell 2, and the connection assembly 3, and effectively fill a gap between the first arc-shaped battery cell 1 and the second arc-shaped battery cell 2, so that the battery module may be integrated, and stability and aesthetic property of the battery module are improved.

Alternatively, the insulating coating 32 may be an insulating injection molded material, such as a hot melt adhesive.

Preferably, the battery protection plate may further include an external connection part 33, one end of the external connection part 33 is connected with the plate body 310, and the other end of the external connection part 33 extends from one end of the plate body 310 in the first direction F1 to the outside of the insulating coating part 32, so as to realize connection of the battery module to the outside.

Alternatively, the external connection portion 33 may be a flexible circuit board (Flexible Printed Circuit abbreviated as FPC).

Preferably, as shown in fig. 1, the thicknesses of the first arc-shaped battery cell 1, the connection assembly 3 and the second arc-shaped battery cell 2 are equal, wherein the thickness of the first arc-shaped battery cell 1 can be understood as the thickness of the first battery cell body 13, and the thickness of the second arc-shaped battery cell 2 can be understood as the thickness of the second battery cell body 23.

Fig. 1 to 6 show an example in which the curved surface is a cylindrical surface, but not limited thereto, the shape of the curved surface may be adaptively adjusted according to the curved surface structure of the housing of the electronic product. For example, the curved surface structure of the housing of the electronic product is an elliptic cylindrical surface, and correspondingly, the curved surface can also be an elliptic cylindrical surface.

Fig. 1 to 6 show examples in which the central angle corresponding to the cylindrical surface (i.e., the angle α shown in fig. 1) is 180 °, but the present utility model is not limited thereto, and the central angle may be adaptively adjusted within the range of 0 ° < α+.ltoreq.180°, for example, according to the actual requirements of the electronic product and the size of the housing. 90 °, 100 °, 120 °, 140 °, 150 °, 160 °, etc.

Preferably, the first and second arc-shaped cells 1 and 2 may be symmetrical about a central plane (which may be a plane shown by a dot-dash line in fig. 1).

The embodiment of the second aspect of the present application further provides an electronic product, including the battery module set according to any one of the embodiments, so that the electronic product has all the beneficial technical effects of the battery module set, and further description is omitted herein.

Preferably, the electronic product comprises the housing.

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 (10)

1. The battery module is characterized by comprising a first arc-shaped electric core, a connecting assembly and a second arc-shaped electric core which are sequentially arranged, wherein the first arc-shaped electric core and the second arc-shaped electric core are respectively and electrically connected with the connecting assembly;

the outer side of the first arc-shaped battery cell is a first cambered surface, the outer side of the connecting component is a second cambered surface, the outer side of the second arc-shaped battery cell is a third cambered surface, and the first cambered surface, the second cambered surface and the third cambered surface are spliced to form a curved surface when the first arc-shaped battery cell and the second arc-shaped battery cell are in a state of being connected with the connecting component.

2. The battery module of claim 1, wherein the connection assembly comprises a battery protection plate comprising a plate body, a first connection portion, and a second connection portion, both of which are disposed in the plate body, the first arc-shaped cell is electrically connected with the connection assembly via the first connection portion, and the second arc-shaped cell is electrically connected with the connection assembly via the second connection portion.

3. The battery module according to claim 2, wherein the first connection part and the second connection part are respectively provided at both side surfaces of the plate body facing away from each other.

4. The battery module according to claim 2, wherein,

the first arc-shaped battery cell comprises a first battery cell body, a first connecting lug and a second connecting lug, wherein the first connecting lug and the second connecting lug are both arranged at the end part of one side, close to the connecting assembly, of the first battery cell body, and the first connecting lug and the second connecting lug are respectively connected with the first connecting part;

the second arc-shaped battery cell comprises a second battery cell body, a third connecting lug and a fourth connecting lug, wherein the third connecting lug and the fourth connecting lug are both arranged at the end part of one side, close to the connecting assembly, of the second battery cell body, and the third connecting lug and the fourth connecting lug are respectively connected with the second connecting part.

5. The battery module of claim 4, wherein a portion of at least one of the first cell body and the second cell body is disposed in overlying relation to the plate body;

the connection assembly further includes an insulating adhesive layer disposed between the portion and the plate body.

6. The battery module of claim 5, wherein the connection assembly further comprises an insulating coating, and the battery protection plate, the first connection tab, the second connection tab, the third connection tab, and the fourth connection tab are all coated in the insulating coating.

7. The battery module according to claim 6, wherein the battery protection plate further comprises an external connection portion, one end of the external connection portion is connected with the plate body, and the other end of the external connection portion extends from one end of the plate body to the outside of the insulating coating portion.

8. The battery module of any one of claims 1 to 7, wherein the thickness of the first arcuate cell, the connection assembly, and the second arcuate cell are equal.

9. The battery module according to any one of claims 1 to 7, wherein,

the curved surface is a cylindrical surface;

the central angle corresponding to the cylindrical surface is alpha, wherein alpha is more than 0 degrees and less than or equal to 180 degrees.

10. An electronic product comprising the battery module according to any one of claims 1 to 9.